CN106750137A - A kind of carbon dioxide copolymer polyol based polyurethane pavement and preparation method thereof - Google Patents

Abstract

The invention provides a carbon dioxide copolymer polyol-based polyurethane flooring material, which is prepared from raw materials comprising the following components in parts by weight: 150-200 parts of carbon dioxide copolymer polyol, 150-200 parts of diisocyanate, 10-60 parts of cell opening agent, 5-20 parts of chain extender, 0.1-1 part of water, 0.2-1 part of organic metal catalyst, 0.4-1 part of organic amine catalyst and 0.5-1.5 parts of foam stabilizer. The carbon dioxide copolymer polyol-based polyurethane flooring material has excellent dimensional stability under the synergistic effect of the above-mentioned specific content components. In addition, the paving material has excellent mechanical properties. The experimental results show that the volume shrinkage rate of the paving material is 0% after being placed for a week; the tensile strength of the paving material is 1.58-2MPa, the elongation at break is 128-226%, and the tear strength is 8.9-13.3KN/m , the hardness is 40-48 Shore A.

Description

A kind of carbon dioxide copolymer polyol-based polyurethane floor covering material and preparation method thereof

technical field

The invention relates to the technical field of polyurethane materials, in particular to a carbon dioxide copolymer polyol-based polyurethane flooring material and a preparation method thereof.

Background technique

Track and field tracks, basketball courts, volleyball courts, badminton courts, and tennis courts in modern sports fields, as well as kindergartens, hospitals, and primary and secondary schools, all have requirements for paving materials that are flexible, safe, non-slip, and wear-resistant. Traditional flooring materials are mostly made of polyurethane, polyvinyl chloride, neoprene, etc. These materials have excellent properties, especially excellent cushioning properties, and have been widely used.

However, the traditional materials widely used above also have some disadvantages. For example, polyvinyl chloride itself has poor thermal stability, and its performance gradually decreases during use. At the same time, it will slowly decompose and release harmful substances such as hydrogen chloride. In order to solve the thermal stability of polyvinyl chloride, it is generally necessary to add a large amount of thermal stabilizers, such as lead salts of organic and inorganic acids; the metal salts of higher fatty acids are mainly barium, cadmium, lead, and calcium of stearic acid, lauric acid, and palmitic acid. , zinc, magnesium, strontium and other metal salts; organotin heat stabilizers; rare earth heat stabilizers, etc. In addition, in order to reduce the hardness of PVC flooring materials and improve comfort, it is necessary to add a large amount of plasticizers such as low molecular chlorinated paraffin, DOP, etc. The heat stabilizers and plasticizers mentioned above belong to small molecular compounds, which gradually migrate and release into the environment during use. Most of these substances are toxic. In kindergartens, primary and secondary schools, and hospitals, most of the people who come into contact with these flooring materials are young children, the elderly, patients and other people with weak resistance; in sports venues, when the human body exercises a lot, the resistance is also poor, and it is easy to be affected by these toxic and harmful substances. Neoprene has a similar situation. At the same time, in order to soften the neoprene, polycyclic aromatic hydrocarbons are generally added. During the processing of neoprene, some toxic and harmful substances are also produced, and neoprene has an unpleasant smell. With the improvement of people's health requirements and the strengthening of the awareness of the toxicity of compounds, the application of chlorine-containing compounds in flooring materials will gradually disappear. Polyurethane material has strong tailorability, is non-toxic and tasteless after being prepared into products, and is an ideal paving material.

The microstructure of the polyurethane foam prepared in the existing literature is a closed-cell structure. When it is exposed to high and low temperatures outdoors, the carbon dioxide gas in the cells is easy to migrate and release, resulting in closed-cell shrinkage. Unevenness, poor dimensional stability, affect the appearance and cause certain safety hazards.

Contents of the invention

In view of this, the object of the present invention is to provide a carbon dioxide copolymer polyol-based polyurethane flooring material and a preparation method thereof, the flooring material has excellent dimensional stability.

The invention provides a carbon dioxide copolymer polyol-based polyurethane flooring material, which is prepared from raw materials comprising the following components:

Carbon dioxide copolymer polyol 150-200 parts, diisocyanate 150-200 parts, cell opening agent 10-60 parts, chain extender 5-20 parts, water 0.1-1 part, organometallic catalyst 0.2-1 part, organic amine catalyst 0.4 to 1 part and 0.5 to 1.5 parts of foam stabilizer.

Preferably, the molecular weight of the carbon dioxide copolymer polyol is 1000 to 8000 g/mol, the hydroxyl functionality of the carbon dioxide copolymer polyol is 2 to 6, and the mole fraction of carbonate groups in the carbon dioxide copolymer polyol is 0.25～0.45.

Preferably, the diisocyanate is selected from one or more of toluene diisocyanate, diphenylmethane diisocyanate, modified diphenylmethane diisocyanate and polymeric isocyanate.

Preferably, the organometallic catalyst is selected from one or more of stannous octoate, stannous isooctanoate, dibutyltin dilaurate and organic bismuth.

Preferably, the organic amine catalyst is selected from triethylamine, tributylamine, triethylenediamine, N-ethylmorpholine, N,N,N',N'-tetramethyl-ethylenediamine , one or more of pentamethyldiethylene-triamine, N,N-methylaniline and N,N-dimethylaniline.

Preferably, the chain extender is selected from ethylene glycol, butanediol, diethylene glycol, dipropylene glycol, 1,6-hexanediol, 1,3-propylene glycol, 1,2-propylene glycol, 1,4- One of hydroxymethylcyclohexane, trimethylpentanediol, di-n-butylamine, ethylenediamine, trimethylhexamethylenediamine, tetraethylenepentamine, diethylenetriamine and isophoronediamine or more.

Preferably, the cell opening agent is selected from one or a mixture of ethylene oxide propylene oxide copolymer polyol, liquid paraffin and polydibutylene.

The present invention provides a kind of preparation method of carbon dioxide copolymer polyol-based polyurethane flooring material described in the above technical scheme, comprising the following steps:

The carbon dioxide copolymer polyol, diisocyanate, cell opener, chain extender, water, organic metal catalyst, organic amine catalyst and foam stabilizer are mixed and foamed to obtain the carbon dioxide copolymer polyol-based polyurethane flooring material.

Preferably, the carbon dioxide copolymer polyol, diisocyanate, cell opener, chain extender, water, organic metal catalyst, organic amine catalyst and foam stabilizer mix specifically include:

Mix part of carbon dioxide copolymer polyol, cell opening agent, chain extender, water, organic metal catalyst and organic amine catalyst to obtain component A;

The remaining carbon dioxide copolymer polyol and diisocyanate are mixed and reacted to obtain component B;

The B and A components are mixed.

The invention provides a carbon dioxide copolymer polyol-based polyurethane flooring material, which is prepared from raw materials comprising the following components in parts by weight: 150-200 parts of carbon dioxide copolymer polyol, 150-200 parts of diisocyanate, 10-60 parts of cell opening agent, 5-20 parts of chain extender, 0.1-1 part of water, 0.2-1 part of organic metal catalyst, 0.4-1 part of organic amine catalyst and 0.5-1.5 parts of foam stabilizer. The carbon dioxide copolymer polyol-based polyurethane flooring material provided by the present invention has excellent dimensional stability under the synergistic effect of the above-mentioned specific content components. In addition, the paving material has excellent mechanical properties. Experimental results show that: the volume shrinkage rate of the paving material provided by the invention is 0% after being placed for one week; the tensile strength of the paving material is 1.58-2 MPa, the elongation at break is 128-226%, and the tear strength is 8.9 ～13.3KN/m, hardness 40～48 Shore A.

detailed description

The invention provides a carbon dioxide copolymer polyol-based polyurethane flooring material, prepared in parts by weight from raw materials comprising the following components:

Carbon dioxide copolymer polyol 150-200 parts, diisocyanate 150-200 parts, cell opening agent 10-60 parts, chain extender 5-20 parts, water 0.1-1 part, organometallic catalyst 0.2-1 part, organic amine catalyst 0.4 to 1 part and 0.5 to 1.5 parts of foam stabilizer.

The carbon dioxide copolymer polyol-based polyurethane flooring material provided by the present invention has excellent dimensional stability under the synergistic effect of the above-mentioned specific content components. In addition, the preparation raw materials include carbon dioxide copolymer polyol, which contains a large number of carbonate bonds and ether bonds. These bonds make carbon dioxide copolymer polyol easy to form strong intramolecular and molecular bonds when it is prepared into polyurethane flooring materials. It has excellent mechanical properties under the synergistic effect of other components with specific content. The carbon dioxide copolymer polyol contains a large number of side methyl groups in the molecule. The presence of side methyl groups restricts the internal rotation of carbonate bonds and ether bonds, and can prepare low-density, high-hardness polyurethane flooring materials.

In the present invention, the raw materials for preparing the carbon dioxide copolymer polyol-based polyurethane flooring material include 150-200 parts of carbon dioxide copolymer polyol. In the present invention, the molecular weight of the carbon dioxide copolymer polyol is preferably 1000 to 8000 g/mol, more preferably 1500 to 4000 g/mol; the hydroxyl functionality of the carbon dioxide copolymer polyol is preferably 2 to 6, more preferably 2 ~3; The mole fraction of carbonate groups in the carbon dioxide copolymer polyol is preferably 0.25~0.45, more preferably 0.3~0.4. The present invention has no special limitation on the source of the carbon dioxide copolymer polyol, and the carbon dioxide copolymer polyol well-known to those skilled in the art can be used. Method self-preparation. In the present invention, the carbon dioxide copolymer polyol is synthesized by copolymerizing carbon dioxide with propylene oxide under the action of an initiator and a catalyst. The carbon dioxide copolymer polyol is prepared from cheap industrial waste gas carbon dioxide as the main raw material, and the cost is relatively low. After large-scale production, it is of great significance to environmental protection, energy saving and emission reduction, and at the same time solves the shortcomings of current flooring materials that are not environmentally friendly.

In the present invention, the raw materials for the preparation of the carbon dioxide copolymer polyol-based polyurethane flooring material include 150-200 parts of diisocyanate, preferably 160-195 parts. In a specific embodiment of the present invention, the amount of diisocyanate used is 165 parts. The diisocyanate is preferably selected from one or more of toluene diisocyanate, diphenylmethane diisocyanate, modified diphenylmethane diisocyanate and polymeric isocyanate. The diphenylmethane diisocyanate is pure solid diphenylmethane diisocyanate; the modified diphenylmethane diisocyanate is liquid diphenylmethane diisocyanate modified by carbodiimide. In a specific embodiment of the present invention, the diisocyanate is specifically diphenylmethane diisocyanate.

In the present invention, the raw materials for the preparation of the carbon dioxide copolymer polyol-based polyurethane flooring material include 10-60 parts of a cell opener, preferably 14-55 parts. The cell opener is preferably selected from one or a mixture of any two of ethylene oxide propylene oxide copolymer polyol, liquid paraffin and polydibutylene.

In the present invention, the raw materials for the preparation of the carbon dioxide copolymer polyol-based polyurethane flooring material include 5-20 parts of chain extender, preferably 7-15 parts. The chain extender is preferably selected from ethylene glycol, butanediol, diethylene glycol, dipropylene glycol, 1,6-hexanediol, 1,3-propylene glycol, 1,2-propylene glycol, 1,4-methylol One or more of cyclohexane, trimethylpentanediol, di-n-butylamine, ethylenediamine, trimethylhexamethylenediamine, tetraethylenepentamine, diethylenetriamine and isophoronediamine kind.

In the present invention, the raw materials for the preparation of the carbon dioxide copolymer polyol-based polyurethane flooring material include 0.1-1 part of water, preferably 0.2-0.9 part. In the present invention, the water is used as a foaming agent, and the water reacts with isocyanate to generate carbon dioxide, so as to avoid foams prepared by physical foaming agents such as freon having foaming agent residues and poor environmental protection.

In the present invention, the raw materials for the preparation of the carbon dioxide copolymer polyol-based polyurethane flooring material include 0.2-1 part of an organometallic catalyst, preferably 0.3-0.8 part.

In the present invention, the raw materials for the preparation of the carbon dioxide copolymer polyol-based polyurethane flooring material include 0.4-1 part of an organic amine catalyst, preferably 0.6-0.9 part. The organic amine catalyst is preferably selected from triethylamine, tributylamine, triethylenediamine, N-ethylmorpholine, N,N,N',N'-tetramethyl-ethylenediamine, penta One or more of methyldiethylene-triamine, N,N-methylaniline and N,N-dimethylaniline, more preferably selected from triethylamine, triethylenediamine, N , One or more of N,N',N'-tetramethyl-ethylenediamine and N,N-dimethylaniline. In a specific embodiment of the present invention, the organic amine catalyst is specifically a solution of triethylenediamine dipropylene glycol with a mass fraction of 33%.

In the present invention, the raw materials for the preparation of the carbon dioxide copolymer polyol-based polyurethane flooring material include 0.5-1.5 parts of a foam stabilizer, preferably 0.7-1.4 parts. The foam stabilizer is preferably selected from one or more of silicone foam stabilizers, liquid paraffin, dimethylpolysiloxane and polybutadiene. In a specific embodiment of the present invention, the foam stabilizer is specifically a type DC-193 silicone foam stabilizer.

The present invention provides a kind of preparation method of carbon dioxide copolymer polyol-based polyurethane flooring material described in the above technical scheme, comprising the following steps:

The carbon dioxide copolymer polyol, diisocyanate, cell opener, chain extender, water, organic metal catalyst, organic amine catalyst and foam stabilizer are mixed and foamed to obtain the carbon dioxide copolymer polyol-based polyurethane flooring material.

In the present invention, the mixing of the carbon dioxide copolymer polyol, diisocyanate, cell opener, chain extender, water, organic metal catalyst, organic amine catalyst and foam stabilizer preferably specifically includes:

Mix part of carbon dioxide copolymer polyol, cell opening agent, chain extender, water, organic metal catalyst and organic amine catalyst to obtain component A;

The remaining carbon dioxide copolymer polyol and diisocyanate are mixed and reacted to obtain component B;

The B and A components are mixed.

In the present invention, the mass ratio of the partial carbon dioxide copolymer polyol, cell opener and chain extender is preferably 50-100:10-60:5-20.

In the present invention, the mass ratio of the remaining carbon dioxide copolymer polyol to diisocyanate is preferably 100:150-200.

In the present invention, the reaction temperature of the carbon dioxide copolymer polyol and diisocyanate is preferably 70-90°C; the reaction time of the carbon dioxide copolymer polyol and diisocyanate is preferably 0.5-4h.

In the present invention, it is preferred to mix the A component and the B component after constant temperature to 40-60°C. In the present invention, the component B and component A are preferably mixed under the condition of stirring; the rate of stirring is preferably 500rpm-800rpm.

The present invention adopts GB/T528-2009 to test the tensile strength and elongation at break of the floor covering material described in the above technical scheme;

The present invention tests the tear strength of the floor covering material described in the above technical solution according to GB/T529-2008.

The present invention uses GB/T6031-1998 to test the Shore A hardness of the floor covering material described in the above technical solution.

The invention provides a carbon dioxide copolymer polyol-based polyurethane flooring material, which is prepared from raw materials comprising the following components in parts by weight: 150-200 parts of carbon dioxide copolymer polyol, 150-200 parts of diisocyanate, 10-60 parts of cell opening agent, 5-20 parts of chain extender, 0.1-1 part of water, 0.2-1 part of organic metal catalyst, 0.4-1 part of organic amine catalyst and 0.5-1.5 parts of foam stabilizer. The carbon dioxide copolymer polyol-based polyurethane flooring material provided by the present invention has excellent dimensional stability under the synergistic effect of the above-mentioned specific content components. In addition, the paving material has excellent mechanical properties and flame-retardant properties. Experimental results show that: the volume shrinkage rate of the paving material provided by the invention is 0% after being placed for one week; the tensile strength of the paving material is 1.58-2 MPa, the elongation at break is 128-226%, and the tear strength is 8.9 ～13.3KN/m, hardness 40～48 Shore A.

In order to further understand the present invention, the carbon dioxide copolymer polyol-based polyurethane microporous elastomer floor covering provided by the present invention and its preparation method are described in detail below in conjunction with examples.

Example 1

Preparation of component A: take 80 parts of carbon dioxide copolymer polyol with a molecular weight of 3000 and two functionalities, add 20 parts of a cell opener, 9 parts of chain-extending cross-linking agent ethylene glycol, 0.1 part of water, and 0.2 parts of stannous octoate catalyst , 0.6 parts of A33 (33% triethylenediamine dipropylene glycol solution), 1 part of silicone foam stabilizer (DC-193), stirred and mixed evenly to obtain component A;

Preparation of component B: add 100 parts of carbon dioxide copolymer polyol with a molecular weight of 3000 and two functionalities into the reactor, add 165 parts of diphenylmethane diisocyanate, heat up to 80° C. and react for 3 hours to obtain component B.

Take 100 parts of component A, calculate the required amount of 100 parts of component B according to the isocyanate index 1.1, take 100 parts of component B, heat components A and B to a constant temperature of 50°C, and then place components A and B Mix at high speed, pour into the mold and close the mold for foaming to obtain an environmentally friendly carbon dioxide copolymer polyol-based polyurethane flooring material.

The environment-friendly polyurethane flooring material can be obtained by calculation. In every 100 parts of the product, there are 56 parts of carbon dioxide copolymer polyol, 29.5 parts of diphenylmethane diisocyanate, 9.5 parts of cell opener, and 4.3 parts of chain-extending crosslinking agent. , 0.047 parts of water, 0.095 parts of organic tin catalyst, 0.095 parts of A33 catalyst, and 0.47 parts of foam stabilizer DC-193.

Example 2

Preparation of component A: take 70 parts of carbon dioxide copolymer polyol with a molecular weight of 3000 and two functionalities, add 30 parts of a cell opener, 9 parts of chain-extending crosslinking agent ethylene glycol, 0.1 part of water, and 0.2 parts of stannous octoate catalyst , 0.6 parts of A33 (33% triethylenediamine dipropylene glycol solution), 1 part of silicone foam stabilizer (DC-193), stirred and mixed evenly to obtain component A;

Preparation of component B: add 100 parts of carbon dioxide copolymer polyol with a molecular weight of 3000 and two functionalities into the reactor, add 165 parts of diphenylmethane diisocyanate, heat up to 80° C. and react for 3 hours to obtain component B.

Take 100 parts of component A, calculate the required amount of 100 parts of component B according to the isocyanate index 1.1, take 100 parts of component B, heat components A and B to a constant temperature of 50°C, and then place components A and B The mixture is mixed at high speed, poured into a mold for closed mold foaming, and the environment-friendly carbon dioxide copolymer polyol-based polyurethane flooring material is obtained.

According to calculation, in the environment-friendly polyurethane flooring material, in every 100 parts of products, there are 51.4 parts of carbon dioxide copolymer polyol, 29.5 parts of diphenylmethane diisocyanate, 14.3 parts of cell opener, and 4.3 parts of chain-extending crosslinking agent. 0.047 parts of water, 0.095 parts of organic tin catalyst, 0.095 parts of A33 catalyst, and 0.47 parts of foam stabilizer DC-193.

Example 3

Preparation of component A: Take 60 parts of carbon dioxide copolymer polyol with a molecular weight of 3000 and two functionalities, add 40 parts of a cell opener, 9 parts of chain-extending cross-linking agent ethylene glycol, 0.1 part of water, and 0.2 parts of stannous octoate catalyst , 0.6 parts of A33 (33% triethylenediamine dipropylene glycol solution), 1 part of silicone foam stabilizer (DC-193), stirred and mixed evenly to obtain component A;

Preparation of component B: add 100 parts of carbon dioxide copolymer polyol with a molecular weight of 3000 and two functionalities into the reactor, add 165 parts of diphenylmethane diisocyanate, heat up to 80° C. and react for 3 hours to obtain component B.

Take 100 parts of component A, calculate the required amount of 100 parts of component B according to the isocyanate index 1.1, take 100 parts of component B, heat components A and B to a constant temperature of 50°C, and then place components A and B The mixture is mixed at high speed, poured into a mold for closed mold foaming, and the environment-friendly carbon dioxide copolymer polyol-based polyurethane flooring material is obtained.

According to calculations, in the environment-friendly polyurethane flooring material, in every 100 parts of the product, there are 46.7 parts of carbon dioxide copolymer polyol, 29.5 parts of diphenylmethane diisocyanate, 19 parts of cell opener, and 4.3 parts of chain-extending crosslinking agent. 0.047 parts of water, 0.095 parts of organic tin catalyst, 0.095 parts of A33 catalyst, and 0.47 parts of foam stabilizer DC-193.

Example 4

Preparation of component A: Take 50 parts of carbon dioxide copolymer polyol with a molecular weight of 3000 and two functionalities, add 50 parts of a cell opener, 9 parts of chain-extending cross-linking agent ethylene glycol, 0.1 part of water, and 0.2 parts of stannous octoate catalyst , 0.6 parts of A33 (33% triethylenediamine dipropylene glycol solution), 1 part of silicone foam stabilizer (DC-193), stirred and mixed evenly to obtain component A;

Preparation of component B: add 100 parts of carbon dioxide copolymer polyol with a molecular weight of 3000 and two functionalities into the reactor, add 165 parts of diphenylmethane diisocyanate, heat up to 80° C. and react for 3 hours to obtain component B.

Take 100 parts of component A, calculate the required amount of 100 parts of component B according to the isocyanate index 1.1, take 100 parts of component B, heat components A and B to a constant temperature of 50°C, and then place components A and B The mixture is mixed at high speed, poured into a mold for closed mold foaming, and the environment-friendly carbon dioxide copolymer polyol-based polyurethane flooring material is obtained.

According to calculation, in the environment-friendly polyurethane flooring material, in every 100 parts of products, there are 41.9 parts of carbon dioxide copolymer polyol, 29.5 parts of diphenylmethane diisocyanate, 23.8 parts of cell opener, and 4.3 parts of chain-extending crosslinking agent. 0.047 parts of water, 0.095 parts of organic tin catalyst, 0.095 parts of A33 catalyst, and 0.47 parts of foam stabilizer DC-193.

Comparative example 1

Preparation of component A: get 100 parts of molecular weight 3000, two functional carbon dioxide copolymer polyols, 9 parts of chain-extending crosslinking agent ethylene glycol, 0.1 part of water, 0.2 part of stannous octoate catalyst, A33 (33% tri Ethylenediamine dipropylene glycol solution) 0.6 part, silicone foam stabilizer (DC-193) 1 part, stir and mix evenly to obtain component A;

Preparation of component B: add 100 parts of carbon dioxide copolymer polyol with a molecular weight of 3000 and two functionalities into the reactor, add 165 parts of diphenylmethane diisocyanate, heat up to 80° C. and react for 3 hours to obtain component B.

Take 100 parts of component A, calculate the required amount of 100 parts of component B according to the isocyanate index 1.1, take 100 parts of component B, heat components A and B to a constant temperature of 50°C, and then place components A and B The mixture is mixed at high speed, poured into a mold and foamed in a closed mold to obtain the environment-friendly polyurethane flooring material.

According to calculations, in the environment-friendly polyurethane flooring material, in every 100 parts of the product, there are 66 parts of carbon dioxide copolymer polyol, 29.5 parts of diphenylmethane diisocyanate, 4.3 parts of chain-extending crosslinking agent, and 0.047 part of water. 0.095 parts of organotin catalyst, 0.095 parts of A33 catalyst, and 0.47 parts of foam stabilizer DC-193.

The present invention carries out the mechanical performance test to the prepared paving material according to the test method described in the above technical scheme, and the test results are shown in Table 1, and Table 1 is the performance test of the paving material prepared in Examples 1 to 4 of the present invention and Comparative Example 1 result. The present invention sees Table 2 for each physical property test of the products of Example 2 and Comparative Example 1 after being aged for one week.

Table 1 The performance test results of the paving materials prepared by Examples 1 to 4 of the present invention and Comparative Example 1

The performance test result of the pavement material prepared by the embodiment of the present invention 2 and comparative example 1 of table 2

As can be seen from the above examples, the present invention provides a carbon dioxide copolymer polyol-based polyurethane flooring material, which is prepared in parts by weight from raw materials comprising the following components: 150 to 200 parts of carbon dioxide copolymer polyol, two 150-200 parts of isocyanate, 10-60 parts of cell opener, 5-20 parts of chain extender, 0.1-1 part of water, 0.2-1 part of organic metal catalyst, 0.4-1 part of organic amine catalyst and 0.5-1.5 parts of foam stabilizer share. The carbon dioxide copolymer polyol-based polyurethane flooring material provided by the present invention has excellent dimensional stability under the synergistic effect of the above-mentioned specific content components. In addition, the paving material has excellent mechanical properties. Experimental results show that: the volume shrinkage rate of the paving material provided by the invention is 0% after being placed for one week; the tensile strength of the paving material is 1.58-2 MPa, the elongation at break is 128-226%, and the tear strength is 8.9 ～13.3KN/m, hardness 40～48 Shore A.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (9)

1. a kind of carbon dioxide copolymer polyol based polyurethane pavement, in terms of parts by weight, by including following components Raw material is obtained：

150~200 parts of carbon dioxide copolymer polyalcohol, 150~200 parts of diisocyanate, 10~60 parts of pore-creating agent, chain extender 5~20 parts, 0.1~1 part of water, 0.2~1 part of organo-metallic catalyst, 0.4~1 part of organic amine catalyst and foam stabiliser 0.5 ~1.5 parts.

2. carbon dioxide copolymer polyol based polyurethane pavement according to claim 1, it is characterised in that described The molecular weight of carbon dioxide copolymer polyalcohol is 1000~8000g/mol, the hydroxyl-functional of carbon dioxide copolymer polyalcohol It is 2~6 to spend, and the mole fraction of the intramolecular carbonate group of carbon dioxide copolymer polyalcohol is 0.25~0.45.

3. carbon dioxide copolymer polyol based polyurethane pavement according to claim 1, it is characterised in that described Diisocyanate be selected from toluene di-isocyanate(TDI), methyl diphenylene diisocyanate, modified diphenylmethane diisocyanate and One or more in polymeric isocyanate.

4. carbon dioxide copolymer polyol based polyurethane pavement according to claim 1, it is characterised in that described Organo-metallic catalyst is selected from one or more in stannous octoate, stannous iso caprylate, dibutyl tin laurate and organo-bismuth.

5. carbon dioxide copolymer polyol based polyurethane pavement according to claim 1, it is characterised in that described Organic amine catalyst is selected from triethylamine, tri-butylamine, triethylenediamine, N-ethylmorpholine, N, N, N ', N '-tetramethyl-second Diamines, pentamethyl diethylene-triamine, N, methylphenylamine and N, one or more in accelerine.

6. carbon dioxide copolymer polyol based polyurethane pavement according to claim 1, it is characterised in that described Chain extender is selected from ethylene glycol, butanediol, diethylene glycol, DPG, 1,6-HD, 1,3- propane diols, 1,2- propane diols, 1, 4- methylols hexamethylene, TMPD, di-n-butylamine, ethylenediamine, trimethylhexane diamine, TEPA, divinyl three One or more in amine and isophorone diamine.

7. carbon dioxide copolymer polyol based polyurethane pavement according to claim 1, it is characterised in that described Pore-creating agent is selected from one or two the mixing in SYNPERONIC PE/F68 polyalcohol, atoleine and dibutene Thing.

8. the preparation of carbon dioxide copolymer polyol based polyurethane pavement described in a kind of claim 1~7 any one Method, comprises the following steps：

By carbon dioxide copolymer polyalcohol, diisocyanate, pore-creating agent, chain extender, water, organo-metallic catalyst, organic amine Catalyst and foam stabiliser mix, and foaming obtains carbon dioxide copolymer polyol based polyurethane pavement.

9. preparation method according to claim 8, it is characterised in that the carbon dioxide copolymer polyalcohol, two isocyanides The mixing of acid esters, pore-creating agent, chain extender, water, organo-metallic catalyst, organic amine catalyst and foam stabiliser is specifically included：

By partial CO 2 copolymer polyols, pore-creating agent, chain extender, water, organo-metallic catalyst and organic amine catalyst Mixing, obtains component A；

Residual carbon dioxide copolymer polyols and diisocyanate are mixed, reaction obtains B component；

The B component and component A are mixed.