CN117701060A - A kind of preparation method of edge pressure printer ink - Google Patents

Abstract

The invention discloses a preparation method for edge pressure printer ink, which includes: soaking pigments in ethanol-ether liquid, stirring rapidly, filtering and drying to obtain clean pigment particles; adding methyltrichlorosilane to ether In the process, a silicon ether liquid is formed, and then the clean pigment particles are put into the silicon ether liquid for low-temperature ultrasonic dispersion, and dried to obtain the coating pigment; using water-containing air as gas, the coating particles are sprayed into the reactor for deposition to obtain the wrapped pigment; Put the wrapped pigment into an organic solvent, then add resin materials, preservatives and fillers in sequence to form a homogeneous slurry; add the curing agent into the homogeneous slurry and grind and refine it to obtain edge pressure printer ink. The present invention solves the problem of pigment deterioration in existing inks. Methyltrichlorosilane is used to form a silicon-oxygen structure that is uniformly wrapped on the entire pigment surface to form a stable pigment structure, and the wrapping layer formed by methyltrichlorosilane is transparent. , and will not produce color masking.

Description

A kind of preparation method of edge pressure printer ink

Technical field

The invention belongs to the technical field of inks, and specifically relates to a method for preparing ink for an edge-pressure printer.

Background technique

Ink is an important material used for printing. It expresses patterns and text on the substrate through printing or inkjet printing. The ink includes main components and auxiliary components, which are uniformly mixed and rolled repeatedly to form a viscous colloidal fluid. It is composed of binder (resin), pigments, fillers, additives and solvents. Used for various printing of books, periodicals, packaging and decoration, architectural decoration and electronic circuit boards. As social demand increases, ink varieties and output have also expanded and grown accordingly. However, as thermal transfer ribbons are used for extended periods of time, the ink color is easily changed, making it difficult to be widely used in electronics, plastics, ceramics and other fields.

Contents of the invention

In view of the problems in the prior art, the present invention provides a preparation method of edge pressure printer ink, which solves the problem of pigment deterioration in the existing ink. Methyltrichlorosilane is used to form a silicon-oxygen structure that is uniformly wrapped around the entire pigment. On the surface, the pigment structure is stabilized, and the wrapping layer formed by methyltrichlorosilane is transparent and will not cause color shading.

In order to achieve the above technical objectives, the technical solution of the present invention is:

A method for preparing ink for an edge-pressure printer, including the following steps:

Step 1: Soak the pigment in ethanol-ether liquid for 10-20 minutes, stir rapidly for 30-60 minutes, filter and dry to obtain clean pigment particles. The pigment is made of one of chromium oxide, ferric oxide, and cobalt oxide. kind, the volume ratio of ethanol to ether in the ethanol-ether liquid is 1:2-3, the concentration of the pigment in the ethanol-ether liquid is 200-400g/L, and the soaking temperature is 5-10°C. The stirring speed of the rapid stirring is 500-800r/min, the drying is done in a nitrogen atmosphere, and the drying temperature is 90-100°C; this step utilizes the washing effect of ethanol-ether liquid to realize the pigment Surface cleaning, and reducing bubbles on the surface of the paint through soaking and rapid stirring, effectively improving the surface cleanliness of the paint;

Step 2: Add methyltrichlorosilane to diethyl ether and stir evenly to form a silicon ether liquid. Then put the clean pigment particles into the silicon ether liquid for low-temperature ultrasonic dispersion for 2-4 hours, and dry to obtain a coating pigment. The methyltrichlorosilane The concentration of chlorosilane in diethyl ether is 100-200g/L, the stirring speed for uniform stirring is 100-200r/min, the concentration of the pigment particles in the silicon ether liquid is 60-100g/L, and the ultrasonic frequency of low-temperature ultrasound is 60-90kHz, the temperature is 5-10°C; the drying temperature is 40-45°C; this step uses solution coating to form a stable liquid film on the surface of the pigment, and at the same time, the liquid state of trichloromethylsilane itself Can be dispersed homogeneously on the surface of the pigment to form a liquid film;

Step 3: Using water-containing air as gas, spray the coated particles into the reaction kettle and deposit them for 2-3 hours to obtain the wrapped pigment. The mass-to-volume ratio of the coating particles to the water-containing air is 1-2g/mL, and the content of the water-containing air is 1-2g/mL. The water volume is 8%, the spraying speed is 10-20mL/min, and the deposition temperature is 90-100°C; in this step, when water-containing air is used to blow the coated particles, the water molecules in the water-containing air interact with the trichloromethylsilane on the coated particles. Formation reaction produces trihydroxymethylsilane, and at the temperature of the deposition process, trihydroxymethylsilane forms condensation polymerization to obtain encapsulated pigment;

Step 4: Put the wrapped pigment into an organic solvent and stir evenly, then add resin materials, preservatives and fillers in sequence, and stir rapidly to form a homogeneous slurry; the organic solvent is a mixture of cyclohexane and cyclohexanone. And the volume ratio of cyclohexane and cyclohexanone is 1-3:1, the mass ratio of the wrapped pigment and organic solvent is 1:2-4, and the resin material is a mixture of acrylic resin and epoxy resin, And the mass ratio of acrylic resin to epoxy resin is 2-3:2, the mass ratio of the resin material to the wrapped pigment is 2-3:2, the preservative is Proxel GXL, and the amount of preservative added is 5-10% of the mass of the wrapped pigment, the filler is gas phase silica, and the mass ratio of the gas phase silica to the wrapped pigment is 3:3-4, and the temperature of rapid stirring is 70-80°C. The stirring speed is 1000-2000r/min;

Step 5: Add the curing agent into the homogeneous slurry and grind and refine it to obtain edge pressure printer ink. The curing agent is ZL-1 epoxy curing agent. The amount of the curing agent added is the mass of the homogeneous slurry. 1-2%, the temperature of the grinding treatment is 40-50°C, and the grinding time is 3-5h.

As can be seen from the above description, the present invention has the following advantages:

1. The present invention solves the problem of pigment deterioration in existing inks. Methyltrichlorosilane is used to form a silicon-oxygen structure that is uniformly wrapped on the entire pigment surface to form a stable pigment structure. The wrapping layer formed by methyltrichlorosilane has Transparency and no color blocking.

2. The present invention uses fumed silica as a filler, which can utilize the fine structure of the fumed silica itself to form rapid penetration and improve the tightness of the ink after curing. It can especially be inserted into the network structure formed during the curing process of the epoxy resin. At the same time, fumed silica has the effect of reflecting light and not blocking, which can ensure the normal use of the ink and reduce the impact of light damage on the resin.

Detailed ways

The present invention will be described in detail with reference to the examples, but the claims of the present invention will not be limited in any way.

Example 1

A method for preparing ink for an edge-pressure printer, including the following steps:

Step 1: Soak the pigment in ethanol-ether liquid for 10 minutes, stir rapidly for 30 minutes, filter and dry to obtain clean pigment particles. The pigment is chromium oxide. The volume ratio of ethanol to ether in the ethanol-ether liquid is is 1:2, the concentration of the pigment in the ethanol-ether liquid is 200g/L, the soaking temperature is 5°C, the stirring speed of the rapid stirring is 500r/min, and the drying is done under a nitrogen atmosphere , and the drying temperature is 90℃;

Step 2: Add methyltrichlorosilane to diethyl ether and stir evenly to form a silicon ether liquid. Then put the clean pigment particles into the silicon ether liquid for low-temperature ultrasonic dispersion for 2 hours, and dry to obtain a coating pigment. The methyltrichlorosilane The concentration in diethyl ether is 100g/L, the stirring speed for uniform stirring is 100r/min, the concentration of the pigment particles in the silicon ether liquid is 60g/L, the ultrasonic frequency of low-temperature ultrasound is 60kHz, and the temperature is 5°C; The drying temperature is 40℃;

Step 3: Using water-containing air as gas, spray the coated particles into the reaction kettle for deposition for 2 hours to obtain the wrapped pigment. The mass-volume ratio of the coating particles to the water-containing air is 1g/mL, and the water content of the water-containing air is 8%. , the spraying speed is 10mL/min, and the deposition temperature is 90°C;

Step 4: Put the wrapped pigment into an organic solvent and stir evenly, then add resin materials, preservatives and fillers in sequence, and stir rapidly to form a homogeneous slurry; the organic solvent is a mixture of cyclohexane and cyclohexanone. And the volume ratio of cyclohexane and cyclohexanone is 1:1, the mass ratio of the encapsulated pigment and organic solvent is 1:2, the resin material is a mixture of acrylic resin and epoxy resin, and the acrylic resin and The mass ratio of epoxy resin is 2:2, the mass ratio of the resin material to the wrapped pigment is 2:2, the preservative is Proxel GXL, and the amount of preservative added is 5% of the mass of the wrapped pigment, The filler uses gas phase silica, and the mass ratio of the gas phase silica to the wrapped pigment is 3:3, the temperature of rapid stirring is 70°C, and the stirring speed is 1000r/min;

Step 5: Add the curing agent into the homogeneous slurry and grind and refine it to obtain edge pressure printer ink. The curing agent is ZL-1 epoxy curing agent. The amount of the curing agent added is the mass of the homogeneous slurry. 1%, the temperature of the grinding treatment is 40°C, and the grinding time is 3h.

The ink prepared in this example was printed with an edge pressure printer. The resulting print was still intact and had a clear surface after being placed at 300°C for 2 hours. It was tested with a wear-resistant tester and was resistant to friction 28 times. It was placed at room temperature for 1 month. , basically unchanged.

Example 2

A method for preparing ink for an edge-pressure printer, including the following steps:

Step 1: Soak the pigment in the ethanol-ether liquid for 20 minutes, stir rapidly for 60 minutes, filter and dry to obtain clean pigment particles. The pigment is ferric oxide, and the ethanol and ether in the ethanol-ether liquid are equal to each other. The volume ratio is 1:3, the concentration of the pigment in the ethanol-ether liquid is 400g/L, the soaking temperature is 10°C, the stirring speed of the rapid stirring is 800r/min, and the drying is under a nitrogen atmosphere Drying, and the drying temperature is 100℃;

Step 2: Add methyltrichlorosilane to diethyl ether and stir evenly to form a silicon ether liquid. Then put the clean pigment particles into the silicon ether liquid for low-temperature ultrasonic dispersion for 4 hours, and dry to obtain a coating pigment. The methyltrichlorosilane The concentration in diethyl ether is 200g/L, the stirring speed for uniform stirring is 200r/min, the concentration of the pigment particles in the silicon ether liquid is 100g/L, the ultrasonic frequency of low-temperature ultrasound is 90kHz, and the temperature is 10°C; so The drying temperature is 45℃;

Step 3: Using water-containing air as gas, spray the coated particles into the reaction kettle for deposition for 3 hours to obtain the wrapped pigment. The mass-to-volume ratio of the coating particles to the water-containing air is 2g/mL, and the water content of the water-containing air is 8%. , the spraying speed is 20mL/min, and the deposition temperature is 100℃;

Step 4: Put the wrapped pigment into an organic solvent and stir evenly, then add resin materials, preservatives and fillers in sequence, and stir rapidly to form a homogeneous slurry; the organic solvent is a mixture of cyclohexane and cyclohexanone. And the volume ratio of cyclohexane and cyclohexanone is 3:1, the mass ratio of the encapsulated pigment and organic solvent is 1:4, the resin material is a mixture of acrylic resin and epoxy resin, and the acrylic resin and The mass ratio of epoxy resin is 3:2, the mass ratio of the resin material to the wrapped pigment is 3:2, the preservative is Proxel GXL, and the amount of preservative added is 10% of the mass of the wrapped pigment, The filler uses gas phase silica, and the mass ratio of the gas phase silica to the wrapped pigment is 3:4, the temperature of rapid stirring is 80°C, and the stirring speed is 2000r/min;

Step 5: Add the curing agent into the homogeneous slurry and grind and refine it to obtain edge pressure printer ink. The curing agent is ZL-1 epoxy curing agent. The amount of the curing agent added is the mass of the homogeneous slurry. 2%, the temperature of the grinding treatment is 50°C, and the grinding time is 5h.

The ink prepared in this example was printed with an edge pressure printer. The resulting print was still intact and had a clear surface after being placed at 300°C for 2 hours. It was tested by a wear-resistant tester and was resistant to friction 35 times. It was placed at room temperature for 1 month. , basically unchanged.

Example 3

A method for preparing ink for an edge-pressure printer, including the following steps:

Step 1: Soak the pigment in ethanol-ether liquid for 15 minutes, stir rapidly for 50 minutes, filter and dry to obtain clean pigment particles. The pigment is cobalt oxide, and the volume ratio of ethanol to ether in the ethanol-ether liquid is is 1:3, the concentration of the pigment in the ethanol-ether liquid is 300g/L, the soaking temperature is 8°C, the stirring speed of the rapid stirring is 700r/min, and the drying is done under a nitrogen atmosphere , and the drying temperature is 95℃;

Step 2: Add methyltrichlorosilane to diethyl ether and stir evenly to form a silicon ether liquid. Then put the clean pigment particles into the silicon ether liquid for low-temperature ultrasonic dispersion for 3 hours, and dry to obtain a coating pigment. The methyltrichlorosilane The concentration in diethyl ether is 150g/L, the stirring speed for uniform stirring is 150r/min, the concentration of the pigment particles in the silicon ether liquid is 80g/L, the ultrasonic frequency of low-temperature ultrasound is 80kHz, and the temperature is 8°C; The drying temperature is 43℃;

Step 3: Using water-containing air as gas, spray the coated particles into the reaction kettle for deposition for 3 hours to obtain the wrapped pigment. The mass-to-volume ratio of the coating particles to the water-containing air is 2g/mL, and the water content of the water-containing air is 8%. , the spraying speed is 15mL/min, and the deposition temperature is 95℃;

Step 4: Put the wrapped pigment into an organic solvent and stir evenly, then add resin materials, preservatives and fillers in sequence, and stir rapidly to form a homogeneous slurry; the organic solvent is a mixture of cyclohexane and cyclohexanone. And the volume ratio of cyclohexane and cyclohexanone is 2:1, the mass ratio of the encapsulated pigment and organic solvent is 1:3, the resin material is a mixture of acrylic resin and epoxy resin, and the acrylic resin and The mass ratio of epoxy resin is 3:2, the mass ratio of the resin material to the wrapped pigment is 3:2, the preservative is Proxel GXL, and the amount of preservative added is 8% of the mass of the wrapped pigment, The filler uses gas phase silica, and the mass ratio of the gas phase silica to the wrapped pigment is 3:4, the temperature of rapid stirring is 75°C, and the stirring speed is 1500r/min;

Step 5: Add the curing agent into the homogeneous slurry and grind and refine it to obtain edge pressure printer ink. The curing agent is ZL-1 epoxy curing agent. The amount of the curing agent added is the mass of the homogeneous slurry. 2%, the temperature of the grinding treatment is 45°C, and the grinding time is 4h.

The ink prepared in this example was printed with an edge-pressure printer. The resulting print was still intact and had a clear surface after being placed at 300°C for 2 hours. It was tested with a wear-resistant tester and was resistant to rubbing for 30 times. It was placed at room temperature for 1 month. , basically unchanged.

It can be understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those of ordinary skill in the art should understand that the present invention can still be modified or equivalently substituted to achieve the same technical effect; as long as the requirements for use are met, they are all within the protection scope of the present invention.

Claims (7)

1. A preparation method of ink for a side press type printer is characterized by comprising the following steps: the method comprises the following steps:

step 1, soaking pigment in ethanol-diethyl ether solution for 10-20min, rapidly stirring for 30-60min, filtering, and drying to obtain clean pigment particles;

step 2, adding methyl trichlorosilane into diethyl ether, uniformly stirring to form a silyl ether liquid, then putting clean pigment particles into the silyl ether liquid, performing low-temperature ultrasonic dispersion for 2-4 hours, and drying to obtain a coating pigment;

step 3, spraying the coated particles into a reaction kettle by taking water-containing air as gas, and depositing for 2-3 hours to obtain the wrapped pigment;

step 4, placing the coated pigment into an organic solvent, uniformly stirring, then sequentially adding a resin material, a preservative and a filler, and rapidly stirring to form a homogeneous slurry;

and 5, adding the curing agent into the homogeneous slurry, and grinding and refining to obtain the ink of the edge press type printer.

2. The method for preparing the ink for the edge pressure type printer according to claim 1, wherein: the pigment in the step 1 adopts one of chromium oxide, ferroferric oxide and cobalt oxide, the volume ratio of ethanol to diethyl ether in the ethanol-diethyl ether liquid is 1:2-3, the concentration of the pigment in the ethanol-diethyl ether liquid is 200-400g/L, the soaking temperature is 5-10 ℃, the stirring speed of rapid stirring is 500-800r/min, the drying is carried out in a nitrogen atmosphere, and the drying temperature is 90-100 ℃.

3. The method for preparing the ink for the edge pressure type printer according to claim 1, wherein: the concentration of the methyltrichlorosilane in the step 2 in diethyl ether is 100-200g/L, and the stirring speed of uniform stirring is 100-200r/min.

4. The method for preparing the ink for the edge pressure type printer according to claim 1, wherein: the concentration of pigment particles in the step 2 in the silyl ether liquid is 60-100g/L, the ultrasonic frequency of low-temperature ultrasonic is 60-90kHz, and the temperature is 5-10 ℃; the temperature of the drying is 40-45 ℃.

5. The method for preparing the ink for the edge pressure type printer according to claim 1, wherein: the mass volume ratio of the film plating particles to the water-containing air in the step 3 is 1-2g/mL, the water content of the water-containing air is 8%, the spraying speed is 10-20mL/min, and the deposition temperature is 90-100 ℃.

6. The method for preparing the ink for the edge pressure type printer according to claim 1, wherein: the organic solvent in the step 4 is a mixed solution of cyclohexane and cyclohexanone, the volume ratio of the cyclohexane to the cyclohexanone is 1-3:1, the mass ratio of the wrapped pigment to the organic solvent is 1:2-4, the resin material is a mixture of acrylic resin and epoxy resin, the mass ratio of the acrylic resin to the epoxy resin is 2-3:2, the mass ratio of the resin material to the wrapped pigment is 2-3:2, the preservative is Proxel GXL, the addition amount of the preservative is 5-10% of the mass of the wrapped pigment, the filler is gas-phase white carbon black, the mass ratio of the gas-phase white carbon black to the wrapped pigment is 3:3-4, the rapid stirring temperature is 70-80 ℃, and the stirring speed is 1000-2000r/min.

7. The method for preparing the ink for the edge pressure type printer according to claim 1, wherein: the curing agent in the step 5 adopts ZL-1 epoxy curing agent, the adding amount of the curing agent is 1-2% of the mass of the homogeneous slurry, the temperature of the grinding treatment is 40-50 ℃, and the grinding time is 3-5h.