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Polyurethane elastomer printing rubber roller and preparation method thereof

A polyurethane elastomer, printing rubber roller technology, used in printing, printing presses, rotary printing presses and other directions, can solve the problems of high temperature resistance, poor solvent resistance, poor printing effect, large pollution and environmental protection, and achieve good solvent resistance. , eliminating the need for production equipment, increasing the effect of corporate and social benefits

Active Publication Date: 2014-01-01
淄博启明星新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing technologies use rubber to make printing rubber rollers, the process is complicated, the cost is high, and the pollution is not environmentally friendly.
The products made are not wear-resistant, not oil-resistant, and have short service life and other shortcomings
The polyurethane elastic rubber roller currently produced has poor high temperature resistance and solvent resistance, and the printing effect of organic solvents such as color steel tile coating is not good.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Heat 50g of polyol (polyester polyol 218) to 110°C for 4 hours in vacuum dehydration, drop to 70°C, add 25g of TDI T100, control the temperature at 90°C, and mix for 2 hours to prepare a semi-prepolymer;

[0027] (2) Heat 50g of polyol (polyester polyol 218) to 110°C for 4 hours in vacuum dehydration, lower it to 70°C, and mix it with curing agent TIPA10g;

[0028] (3) Mix the products prepared in step (1) and step (2), add the reaction control agent dibutyltin dilaurate T120.01mg, stir and react for 10 minutes, inject the mold into an oven at 120°C, and vulcanize for 20 Hours, then unmould.

[0029] The cot performance test that embodiment 1 prepares:

[0030] The elasticity of the rubber roller prepared in Example 1 is 40 degrees, and the elasticity of the common printing and dyeing rubber roller is about 32 degrees.

[0031] Strength resistance: soaking in the thinner for 4 hours reduces the strength by about 1 / 2, and ordinary printing and dyeing rubber rollers...

Embodiment 2

[0034] (1) Heat 24kg of polyol (polyester polyol 218) to 115°C for 6 hours in vacuum dehydration, drop to 75°C, add 20kg of TDI T100, control the temperature at 98°C, and mix for 4 hours to prepare a semi-prepolymer;

[0035] (2) Heat 16kg of polyol (polyester polyol 218) to 115°C for vacuum dehydration for 6 hours, lower it to 75°C, and mix it with curing agent TIPA10kg;

[0036] (3) Mix the products prepared in step (1) and step (2), add a drop of 0.01 mg of the reaction control agent dibutyltin dilaurate, stir and react for 10 minutes, inject the mold into an oven at 120°C, and vulcanize for 20 Hours, then unmould.

[0037] The cot performance test that embodiment 2 prepares:

[0038] The elasticity of the rubber roller prepared in Example 2 is 42 degrees, and the elasticity of the common printing and dyeing rubber roller is about 32 degrees.

[0039] Strength resistance: soaking in the thinner for 4 hours reduces the strength by about 1 / 2, and ordinary printing and dyein...

Embodiment 3

[0042] (1) Heat 48kg of polyol (polyester polyol 218) to 120°C for 8 hours in vacuum dehydration, drop to 75°C, add 30kg of TDI T100, control the temperature at 78°C, and mix for 4 hours to prepare a semi-prepolymer;

[0043] (2) Heat 72kg of polyol (polyester polyol 218) to 120°C for vacuum dehydration for 8 hours, lower it to 75°C, and mix it with curing agent TIPA15kg;

[0044] (3) Mix the products prepared in step (1) and step (2), add a drop of 0.01 mg of the reaction control agent dibutyltin dilaurate, stir and react for 10 minutes, inject the mold into an oven at 120°C, and vulcanize for 20 Hours, then unmould.

[0045] The cot performance test that embodiment 3 prepares:

[0046] The elasticity of the rubber roller prepared in Example 3 is 43 degrees, and the elasticity of the common printing and dyeing rubber roller is about 32 degrees.

[0047] Intensity resistance, soaking in the thinner for 4 hours reduces the strength by about 1 / 2, and ordinary printing and dyei...

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PUM

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Abstract

The invention belongs to the technical field of organic polymer material products and in particular relates to a polyurethane elastomer printing rubber roller and a preparation method thereof. The polyurethane elastomer printing rubber roller is prepared from the following raw materials in parts by weight: 0.8-1.2 parts of polyalcohol, 0.25-0.4 part of polyisocyanate, 0.1-0.2 part of curing agent, and 0.00001 part of reaction control agent, wherein polyalcohol is polyester polyalcohol 218. The invention further provides the preparation method of the polyurethane elastomer printing rubber roller. The preparation method comprises the following steps of: preparing a prepolymer and a curing component at first; and pouring to obtain the polyurethane elastomer printing rubber roller. According to the invention, the processing technology is simplified, so that mixing, forming and vulcanizing of materials are integrated; the printing and dyeing rubber roller prepared by the invention is good in solvent resistance, easy for machining and good in elasticity; in the aspect of solvent resistance, the printing and dyeing rubber roller prepared by the invention is 2 times of other rubber rollers; the surface smoothness of the printing and dyeing rubber roller prepared by the invention can be up to the mirror state; the service life of the printing and dyeing rubber roller prepared by the invention is 2-3 times that of other rubber rollers; the service life of the general printing and dyeing rubber roller is 36 hours; and the service life of the printing and dyeing rubber roller prepared by the invention is about 80 hours.

Description

technical field [0001] The invention belongs to the technical field of organic polymer material products, and in particular relates to a printing rubber roller for preparing polyurethane elastomer and a preparation method thereof. Background technique [0002] With the rapid development of my country's printing industry, the demand for printing rubber rollers is very large and the momentum is strong. At present, the total annual production of rubber rollers in my country exceeds more than 2 billion cm 3 , accounting for more than 75% of the annual production capacity of equipment, and the sales volume accounted for more than 90% of the total production volume of the year. However, with the continuation of my country's printing industry and the increase in the number of high-end and high-speed printing machines introduced year by year, the market's demand for high-quality printing rubber rollers will gradually expand. Printing rubber rollers are commonly used auxiliary equi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/42C08G18/32C08G18/10B41F13/193
CPCB41F13/193C08G18/10C08G18/3281C08G18/42C08G18/6655
Inventor 辛浩波张合军张宗喜高宗山张雪颖
Owner 淄博启明星新材料股份有限公司
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