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Method for preparing and modifying chloroprene rubber powder

A chloroprene rubber powder and chloroprene rubber technology, applied in the field of preparation and modification of chloroprene rubber powder, can solve the problems of large energy, low activity of rubber powder, large project investment, etc., and achieve high surface area, low production cost, highly active effect

Inactive Publication Date: 2008-04-09
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The characteristics of this manufacturing method are that the process is simple, no pollution, and the particle size of the rubber powder produced is small, but the disadvantage is that the project investment is large, and the energy consumed for each kilogram of rubber powder produced is very large, and the activity of the rubber powder is also higher than that of the normal temperature method. take lower

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] After washing and disinfecting the waste neoprene products, put them into the rubber breaker for primary grinding. The drum speed of the rubber breaker is 45 rpm. The roll distance between the two rolls was set at 3 mm. Put into the oven and heat for 1 hour after the primary ground coarse rubber powder is sealed with a water-proof plastic bag. The temperature of the oven was set at 100°C. After heating, quickly put it into the cooling water machine for cooling, and the temperature of the circulating water in the cooling water machine is set at 2°C. The rapidly cooled coarse rubber powder together with the grafted abrasive is added to the ball mill for blending and grinding. The net pressure on the ball milling surface is 12000kN, and the speed is 45 rpm. Grind for 15 minutes. The composition of the abrasive was 20% calcium carbonate, 10% sodium chloride, 20% dicumyl peroxide (DCP), and 50% methyl oleate. The mass ratio of grinding agent to rubber powder is 15:100. ...

Embodiment 2

[0030]After washing and disinfecting the waste neoprene products, put them into the rubber breaker for primary grinding. The drum speed of the rubber breaker is 30 rpm. The roll distance between the two rolls was set at 5mm. Put into the oven and heat for 1 hour after the primary ground coarse rubber powder is sealed with a water-proof plastic bag. The temperature of the oven was set at 80°C. After heating, quickly put it into the cooling water machine for cooling, and the temperature of the circulating water in the cooling water machine is set at 2°C. The rapidly cooled coarse rubber powder together with the grafted abrasive is added to a ball mill for blending and grinding. The net pressure on the ball milling surface is 10000 kN, and the speed is 30 rpm. Grind for 15 minutes. The composition of the abrasive is 20% calcium carbonate, 10% sodium chloride, 20% dicumyl peroxide (DCP), and 50% acrylic acid. The mass ratio of grinding agent to rubber powder is 15:100. Put t...

Embodiment 3

[0032] After washing and disinfecting the waste neoprene products, put them into the rubber breaker for primary grinding. The drum speed of the rubber breaker is 30 rpm. The roll distance between the two rolls was set at 5 mm. Put into the oven and heat for 1 hour after the primary ground coarse rubber powder is sealed with a water-proof plastic bag. The temperature of the oven was set at 80°C. After heating, quickly put it into the cooling water machine for cooling, and the temperature of the circulating water in the cooling water machine is set at 2°C. The rapidly cooled coarse rubber powder together with the grafted abrasive is added to a ball mill for blending and grinding. The net pressure on the ball milling surface is 10000 kN, and the speed is 30 rpm. Grind for 15 minutes. The composition of the abrasive was 20% calcium carbonate, 10% sodium chloride, 20% dicumyl peroxide (DCP), and 50% oleic acid. The mass ratio of grinding agent to rubber powder is 15:100. Put ...

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Abstract

The present invention relates to a processing and preparation method of high-performance chloroprene rubber powder by using the waste rubber products as the raw materials, the waste chloroprene rubber products are washed to be clean by using water, then the high-temperature disinfection and viruses and bacteria removal are carried out at 80 to 120 DEG C, the disinfected rubber products are placed in a rubber crusher to carry out the initial grinding to get the crude rubber powder; the crude rubber powder after the initial grinding is arranged in a water-isolating plastic bag and then is placed in an oven to carry out the heating and baking, after that, the rubber powder is taken out and cooled; the crude rubber powder after the cooling and the grafting and grinding agents are added in a ball mill to carry out the mixing grinding, so as to get the fine rubber powder; the fine rubber powder is arranged in a microwave generator to carry out the microwave modification, so as to get the modified rubber powder; the modified rubber powder and the surface treatment agent are stirred and mixed; the mixing rubber powder is placed in an ultrasonic generator to carry out the ultrasonic treatment, so as to get the final product of the rubber powder, and the prepared rubber powder has the advantages of small particle size, big surface area, wide usage, convenient use, energy conservation and so on.

Description

Technical field: [0001] The invention relates to a method for preparing high-performance rubber powder by using waste rubber products as raw materials. Amphoteric reactive neoprene powder with large oxygen content and both hydrophilic and lipophilic groups. Background technique: [0002] Due to its high tensile strength, chloroprene rubber has excellent heat resistance, light resistance, aging resistance, and oil resistance are better than natural rubber, styrene-butadiene rubber, and butadiene rubber. It has strong flame retardancy and excellent flame retardancy, high chemical stability and good water resistance, so it is often widely used in rubber products such as molded products, cables, transmission belts, conveyor belts, and profiles. With the development of modern industry, there are more and more discarded neoprene products, and the methods of incineration and landfill are usually used to reduce the amount of accumulation, but it will cause more serious secondary po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/12C08L11/00
Inventor 王大鹏张茂杰田惠文赵树高
Owner QINGDAO UNIV OF SCI & TECH
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