CN102336886A - Polyurethane for transmission friction wheels and preparation method thereof - Google Patents
Polyurethane for transmission friction wheels and preparation method thereof Download PDFInfo
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- CN102336886A CN102336886A CN2011101870501A CN201110187050A CN102336886A CN 102336886 A CN102336886 A CN 102336886A CN 2011101870501 A CN2011101870501 A CN 2011101870501A CN 201110187050 A CN201110187050 A CN 201110187050A CN 102336886 A CN102336886 A CN 102336886A
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- friction wheel
- gearing friction
- urethane
- polyester polyol
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- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 229920002635 polyurethane Polymers 0.000 title abstract description 6
- 239000004814 polyurethane Substances 0.000 title abstract description 6
- 230000005540 biological transmission Effects 0.000 title abstract description 5
- 229920005906 polyester polyol Polymers 0.000 claims abstract description 23
- 229920001610 polycaprolactone Polymers 0.000 claims abstract description 22
- 239000004632 polycaprolactone Substances 0.000 claims abstract description 22
- 229920005862 polyol Polymers 0.000 claims abstract description 22
- 150000003077 polyols Chemical class 0.000 claims abstract description 22
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000004970 Chain extender Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 27
- 239000000203 mixture Substances 0.000 claims description 27
- 125000001261 isocyanato group Chemical group *N=C=O 0.000 claims description 22
- 229920000642 polymer Polymers 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 21
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 13
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims description 9
- -1 butyleneglycol glycol ester Chemical class 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 150000002148 esters Chemical class 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 description 8
- 229920003225 polyurethane elastomer Polymers 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- BJZYYSAMLOBSDY-QMMMGPOBSA-N (2s)-2-butoxybutan-1-ol Chemical compound CCCCO[C@@H](CC)CO BJZYYSAMLOBSDY-QMMMGPOBSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000001046 anti-mould Effects 0.000 description 2
- 239000002546 antimould Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000003673 urethanes Chemical class 0.000 description 1
Landscapes
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention relates to polyurethane applied for manufacturing transmission friction wheels and a preparation method thereof. The polyurethane comprises, by weight, 90 to 100 parts of polycaprolactone polyol, 15 to 25 parts of polyester polyol, 20 to 30 parts of toluene diisocyanate, 5 to 10 parts of a curing agent and 15 to 20 parts of a chain extender. According to the invention, polycaprolactone polyol and polyester polyol are used as raw materials to prepare a polyurethane elastic colloidal material; an elastic colloidal layer made of the elastic colloidal material has the advantages of good wear resistance, good elasticity, small deformation, good dynamic performance, good temperature tolerance, etc., and manufacture cost for the elastic colloidal layer is low.
Description
Technical field
The present invention relates to a kind of urethane and preparation method thereof, specifically is a kind of urethane that is applied to make the gearing friction wheel and preparation method thereof.
Background technology
The frictionwheel transmission is a kind of widely used mechanical drive mode, and the frictional force that it passes through frictionwheel and wipes part is mutually utilized the turning handle another one object drive rotation of frictionwheel or the drive object moves.It has that compact construction, transmission noise are low, control flexibly, maintenance cost is low, can produce in overload fashion and skid and avoid damaging advantage such as device.During work, frictionwheel the most important thing is will avoid producing skidding, with the anti-tamper frictionwheel, influences normal transmission.In order to overcome skidding, must suitably increase the frictional force of contact position, increase the approach of frictional force, the one, increase positive pressure, the 2nd, increase frictional coefficient.But the method that adopt to increase positive pressure can increase the load that acts on axle and the bearing, causes increasing the size of driving member, makes mechanism's heaviness.Therefore, positive pressure can only suitably increase.Therefore, increasing the surperficial frictional coefficient of frictionwheel is a more feasible scheme.
In the prior art; The scheme that increases the frictionwheel skin friction coefficient normally coats the elastic gel layer in the core wheel outer rim; Utilize the elastic gel layer as friction surface,, make it produce enough big frictional force and drive the rotation of other objects or mobile through the elasticity variable characteristic of elastic gel layer.The material of elastic gel layer commonly used is generally selected polyurethane elastomer for use at present; The special elastomer material that urethane is a kind of good springiness, distortion is little, intensity is high, wear resistance is good; Its wear resistance and tensile strength are 2～5 times of tree elastomer; The raw material variety of polyurethane elastomer is many, and the hardness regulation range is wide, and various raw materials have relative merits separately; Wherein more typical urethane raw has: polyester polyol, THF homopolymer ethoxylated polyhydric alcohol, polycaprolactone polyol etc., and its relative merits separately are following:
(1) polyurethane elastomer made of polyester polyol have intensity height, good springiness, advantages such as wear resistance is good, tear resistance is good, oil resistant, but its water tolerance and anti-mould sex change are poor.
Advantages such as (2) polyurethane elastomer made of THF homopolymer ethoxylated polyhydric alcohol has that intensity height, good springiness, distortion are little, excellent in abrasion resistance, water tolerance and anti-mould sex change are good; But its oil resistant is than polyester difference; Tear resistance is poor, be prone to directed cracking, and cost of material is somewhat expensive.
(3) polyurethane elastomer of polycaprolactone polyol making is because molecular structure has polyester and polyethers two-sidedness; Polyester polyols pure and mild PTMG polyvalent alcohol advantage such as intensity height, good springiness, distortion are little, water-fast so its performance has concurrently, oil resistant, ageing-resistant performance are good; And dynamic deformation little, restorative good, high thermal resistance is good; Excellent combination property etc., but its cost of material is more expensive than the pure and mild PTMG polyvalent alcohol of polyester polyols, and also raw material production enterprise is few.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art; A kind of urethane that is applicable to the elastic gel layer of making the gearing friction wheel and preparation method thereof is provided; This urethane has advantages such as wear resisting property is good, good springiness, distortion is little, dynamic property good, heat resistance is good, and manufacturing cost is cheap relatively.
According to technical scheme provided by the invention: the gearing friction wheel use urethane, it is characterized in that: calculating by weight comprises following component: polycaprolactone polyol, 90～100 parts; Polyester polyol, 15～25 parts; Tolylene diisocyanate, 20～30 parts; Solidifying agent, 5～10 parts; Chainextender, 15～20 parts.
As the further improvement of said frictionwheel with urethane, the parts by weight of said each component are specially: polycaprolactone polyol, 100 parts; Polyester polyol, 20 parts; Tolylene diisocyanate, 25 parts, diphenylmethanediisocyanate, 7 parts; Chainextender, 18 parts.
As the further improvement of said frictionwheel with urethane, the molecular weight of said polycaprolactone polyol is 1500～2000.
As the further improvement of said frictionwheel with urethane, the molecular weight of said polyester polyol is 1500～2000.
As the further improvement of said frictionwheel with urethane, said polyester polyol adopts and gathers hexanodioic acid butyleneglycol glycol ester.Because the unit molecule chain length of gathering hexanodioic acid butyleneglycol glycol ester, flexibility is good.
As the further improvement of said frictionwheel with urethane, described tolylene diisocyanate is pure Toluene-2,4-diisocyanate, the 4-vulcabond.
As the further improvement of said frictionwheel with urethane, said employing diphenylmethanediisocyanate.Owing to contain a large amount of isocyanato (NCO) in the diphenylmethanediisocyanate; Isocyanato (NCO) easily with polycaprolactone polyol and polyester polyol resin in the hydroxyl long flexible chain of generation that reacts; Make prepared urethane flexibility good, intensity is high.
As the further improvement of said frictionwheel with urethane, described chainextender is the mixture of diformazan sulfenyl tolylene diamine and TriMethylolPropane(TMP), and the parts by weight of diformazan sulfenyl tolylene diamine and TriMethylolPropane(TMP) are 3: 1.The urethane intensity of being done like this is high, and good springiness is out of shape restorative fast.
The gearing friction wheel is characterized in that: may further comprise the steps with the preparation method of urethane:
(1), proportioning takes by weighing following component by weight: polycaprolactone polyol, 90～100 parts; Polyester polyol, 15～25 parts; Tolylene diisocyanate, 20～30 parts; Diphenylmethanediisocyanate, 5～10 parts; Chainextender, 15～20 parts;
(2), tolylene diisocyanate and diphenylmethanediisocyanate are added in the container with temperature regulation function together, mix, and the temperature in the container is raised to 65～75 ℃;
(3), join polycaprolactone polyol and polyester polyol together in the above-mentioned container then and fully mix; Under 70～85 ℃ temperature, reacted 1.5～2.5 hours, and vacuumized then, reaction is 0.5～1.5 hour under vacuum state; Temperature 85～95 degree obtain performed polymer;
(4), measure the percentage composition of the isocyanato (NCO) in the above-mentioned performed polymer, when the percentage composition of isocyanato (NCO) was lower than 4.5%, stopped reaction obtained satisfactory performed polymer, performed polymer is used for next step or pours out hermetically stored; If the percentage composition of isocyanato (NCO) still is higher than 4.5%, continue reaction under vacuum state, until meeting the requirements;
(5), performed polymer that step (4) is obtained is heated to 80 ℃～90 ℃, adds chainextender then, fully stir 1～2 minute after, can directly pour in the good gearing friction wheel shaping mould of preheating, as the material of gearing friction wheel elastic gel layer.
As said polyurethane preparation further improvements in methods, being evacuated to vacuum tightness in the said step (3) is 0.095～0.098MPa.
The present invention compared with prior art; Advantage is: the present invention adopts polycaprolactone polyol and polyester polyol to process the elastic polyurethane colloidal materials as raw material; The elastic gel layer that utilizes this elastic gel material to process has advantages such as wear resisting property is good, good springiness, distortion is little, dynamic property good, heat resistance is good, and manufacturing cost is cheap relatively.
Embodiment
Below in conjunction with specific embodiment the present invention is described further.
Embodiment 1
(1), proportioning takes by weighing following component by weight: polycaprolactone polyol (molecular weight is 1800), 100 parts; Gather hexanodioic acid butyleneglycol glycol ester (molecular weight is 1600), 20 parts; Tolylene diisocyanate (TDI-100), 25 parts; Diphenylmethanediisocyanate, 7 parts; The mixture of diformazan sulfenyl tolylene diamine and TriMethylolPropane(TMP), 18 parts;
(2), tolylene diisocyanate and diphenylmethanediisocyanate are added in the container with temperature regulation function together, mix, and the temperature in the container is raised to 70 ℃;
(3), join polycaprolactone polyol and polyester polyol together in the above-mentioned container then and fully mix; Reaction is 2 hours under 90 ℃ temperature; Be evacuated to 0.095MPa then; Reaction is 1 hour under vacuum state, and the temperature of reaction under the vacuum state is controlled at below 100 degree, obtains performed polymer;
(4), the percentage composition that records the isocyanato (NCO) in the above-mentioned performed polymer is 4.2%, stopped reaction obtains satisfactory performed polymer;
(5), performed polymer that step (4) is obtained is heated to 85 ℃, the mixture that adds diformazan sulfenyl tolylene diamine and TriMethylolPropane(TMP) then is as chainextender, fully stir 1～2 minute after; Directly pour in the good gearing friction wheel shaping mould of preheating; 120 ℃ of following vulcanization reactions 1 hour, product was taken out in die sinking then, put into 100 ℃～120 ℃ constant temperature oven heat tracing 8～10 hours again; The room temperature cooling was tested its physicals (seeing table 1) after 48 hours.
Embodiment 2
(1), proportioning takes by weighing following component by weight: polycaprolactone polyol (molecular weight is 1600), 90 parts; Gather hexanodioic acid butyleneglycol glycol ester (molecular weight is 2000); Tolylene diisocyanate, 20 parts; Diphenylmethanediisocyanate, 10 parts; The mixture of diformazan sulfenyl tolylene diamine and TriMethylolPropane(TMP), 16 parts;
(2), tolylene diisocyanate and diphenylmethanediisocyanate are added in the container with temperature regulation function together, mix, and the temperature in the container is raised to 65 ℃;
(3), then polycaprolactone polyol and polyester polyol; Join together in the above-mentioned container and fully mix; Reaction is 2.5 hours under 85 ℃ temperature, is evacuated to 0.098MPa then, and reaction is 1.5 hours under vacuum state; Temperature of reaction under the vacuum state is controlled at below 100 degree, obtains performed polymer;
(4), the percentage composition that records the isocyanato (NCO) in the above-mentioned performed polymer is 4%, stopped reaction obtains satisfactory performed polymer;
(5), performed polymer that step (4) is obtained is heated to 80 ℃, the mixture that adds diformazan sulfenyl tolylene diamine and TriMethylolPropane(TMP) then is as chainextender, fully stir 1～2 minute after; Directly pour in the good gearing friction wheel shaping mould of preheating; 120 ℃ of following vulcanization reactions 1 hour, product was taken out in die sinking then, put into 100 ℃～120 ℃ constant temperature oven heat tracing 8～10 hours again; The room temperature cooling was tested its physicals (seeing table 1) after 48 hours.
Embodiment 3
(1), proportioning takes by weighing following component by weight: polycaprolactone polyol (molecular weight is 1500), 95 parts; Gather hexanodioic acid butyleneglycol glycol ester (molecular weight is 1500), 20 parts; Tolylene diisocyanate (TDI-100), 20 parts; Diphenylmethanediisocyanate, 5 parts; The mixture of diformazan sulfenyl tolylene diamine and TriMethylolPropane(TMP), 15 parts;
(2), tolylene diisocyanate and diphenylmethanediisocyanate are added in the container with temperature regulation function together, mix, and the temperature in the container is raised to 75 ℃;
(3), then polycaprolactone polyol and polyester polyol; Join together in the above-mentioned container and fully mix; Reaction is 1.5 hours under 95 ℃ temperature, is evacuated to 0.096MPa then, and reaction is 0.5 hour under vacuum state; Temperature of reaction under the vacuum state is controlled at below 100 degree, obtains performed polymer;
(4), the percentage composition that records the isocyanato (NCO) in the above-mentioned performed polymer is 4.5% o'clock, stopped reaction obtains satisfactory performed polymer;
(5), performed polymer that step (4) is obtained is heated to 90 ℃, adds diformazan sulfenyl tolylene diamine mixture then as chainextender, fully stir 1～2 minute after; Directly pour in the good gearing friction wheel shaping mould of preheating; 120 ℃ of following vulcanization reactions 1 hour, product was taken out in die sinking then, put into 100 ℃～120 ℃ constant temperature oven heat tracing 8～10 hours again; The room temperature cooling was tested its physicals (seeing table 1) after 48 hours.
Table 1: the product physicals of embodiment 1-3
Claims (10)
1. the gearing friction wheel is used urethane, it is characterized in that: calculating by weight comprises following component: polycaprolactone polyol, 90～100 parts; Polyester polyol, 15～25 parts; Tolylene diisocyanate, 20～30 parts; Solidifying agent, 5～10 parts; Chainextender, 15～20 parts.
2. gearing friction wheel as claimed in claim 1 is used urethane, and the parts by weight of said each component are specially: polycaprolactone polyol, 100 parts; Polyester polyol, 20 parts; Tolylene diisocyanate, 25 parts; Diphenylmethanediisocyanate, 7 parts; Chainextender, 18 parts.
3. according to claim 1 or claim 2 gearing friction wheel is used urethane, and it is characterized in that: the molecular weight of said polycaprolactone polyol is 1500～2000.
4. according to claim 1 or claim 2 gearing friction wheel is used urethane, and it is characterized in that: the molecular weight of said polyester polyol is 1500～2000.
5. according to claim 1 or claim 2 gearing friction wheel use urethane, and it is characterized in that: said polyester polyol employing gathers hexanodioic acid butyleneglycol glycol ester.
6. according to claim 1 or claim 2 gearing friction wheel is used urethane, and it is characterized in that: described tolylene diisocyanate is pure Toluene-2,4-diisocyanate, the 4-vulcabond.
7. gearing friction wheel according to claim 1 and 2 is used urethane, and it is characterized in that: described chainextender is the mixture of diformazan sulfenyl tolylene diamine and TriMethylolPropane(TMP), and the parts by weight of diformazan sulfenyl tolylene diamine and TriMethylolPropane(TMP) are 3: 1.
8. gearing friction wheel according to claim 1 and 2 is used urethane, it is characterized in that: said isocyanic ester adopts diphenylmethanediisocyanate to make chain extension agent.
9. the gearing friction wheel is characterized in that: may further comprise the steps with the preparation method of urethane:
(1), proportioning takes by weighing following component by weight: polycaprolactone polyol, 90～100 parts; Polyester polyol, 15～25 parts; Tolylene diisocyanate, 20～30 parts; Solidifying agent, 5～10 parts; Chainextender, 15～20 parts;
(2), tolylene diisocyanate and solidifying agent are added in the container with temperature regulation function together, mix, and the temperature in the container is raised to 65～75 ℃;
(3), then join polycaprolactone polyol and polyester polyol together in the above-mentioned container and fully mix, under 85～95 ℃ temperature, reacted 1.5～2.5 hours, vacuumize then, reaction is 0.5～1.5 hour under vacuum state, obtains performed polymer;
(4), measure the percentage composition of the isocyanato (NCO) in the above-mentioned performed polymer, when the percentage composition of isocyanato (NCO) was lower than 4.5%, stopped reaction obtained satisfactory performed polymer, performed polymer is used for next step or pours out hermetically stored; If the percentage composition of isocyanato (NCO) still is higher than 4.5%, continue reaction under vacuum state, until meeting the requirements;
(5), performed polymer that step (4) is obtained is heated to 80 ℃～90 ℃, adds chainextender then, fully stir 1～2 minute after, can directly pour in the good gearing friction wheel shaping mould of preheating, as the material of gearing friction wheel elastic gel layer.
10. gearing friction wheel as claimed in claim 9 is with the preparation method of urethane, and it is characterized in that: being evacuated to vacuum tightness in the said step (3) is 0.095～0.098MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101870501A CN102336886A (en) | 2011-07-05 | 2011-07-05 | Polyurethane for transmission friction wheels and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101870501A CN102336886A (en) | 2011-07-05 | 2011-07-05 | Polyurethane for transmission friction wheels and preparation method thereof |
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| CN102336886A true CN102336886A (en) | 2012-02-01 |
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| CN2011101870501A Pending CN102336886A (en) | 2011-07-05 | 2011-07-05 | Polyurethane for transmission friction wheels and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102585684A (en) * | 2012-02-24 | 2012-07-18 | 天津德威涂料化工有限公司 | Polyurethane gel coat combination capable of spraying blades of fan conventionally and preparation method of polyurethane gel coat combination |
| CN103630355A (en) * | 2013-12-18 | 2014-03-12 | 沈阳飞研航空设备有限公司 | Machine wheel rotating equipment |
| CN116515077A (en) * | 2023-05-23 | 2023-08-01 | 武汉理工大学 | A thermosetting polyurethane material for water-lubricated bearings and its preparation method |
| CN119978289A (en) * | 2025-02-26 | 2025-05-13 | 青岛科技大学 | A low temperature resistant HV type low temperature hydraulic oil resistant polyurethane elastomer and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102585684A (en) * | 2012-02-24 | 2012-07-18 | 天津德威涂料化工有限公司 | Polyurethane gel coat combination capable of spraying blades of fan conventionally and preparation method of polyurethane gel coat combination |
| CN103630355A (en) * | 2013-12-18 | 2014-03-12 | 沈阳飞研航空设备有限公司 | Machine wheel rotating equipment |
| CN116515077A (en) * | 2023-05-23 | 2023-08-01 | 武汉理工大学 | A thermosetting polyurethane material for water-lubricated bearings and its preparation method |
| CN119978289A (en) * | 2025-02-26 | 2025-05-13 | 青岛科技大学 | A low temperature resistant HV type low temperature hydraulic oil resistant polyurethane elastomer and preparation method thereof |
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