Activated waste rubber powder and preparation thereof

A waste rubber powder and activator technology, which is applied in the direction of plastic recycling and recycling technology, can solve the problems of the limitation of modified rubber powder, and achieve the effect of improving impact resistance and rational utilization

Inactive Publication Date: 2009-05-27
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

J.Appl.Poly.Sci., 2000, 77: 2595, J.Mater.Sci., 1986, 21: 1769, reported the research of rubber powder modified thermoplastic material to improve its impact resistance, wherein the rubber powder is based on propylene Amide and styrene have been modified and achieved good results, but the application of this modified rubber powder is limited by the base material

Method used

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  • Activated waste rubber powder and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Weigh 100 grams of 100-mesh rubber powder, put it into a 500 ml four-necked flask with stirring, heating, condensation, and nitrogen devices, add 100 grams of styrene containing 0.03% benzoyl peroxide by mass, and soak the rubber powder for 4 hours After the styrene permeates into the rubber powder, start stirring, protect with nitrogen, heat up to 100°C, react for 2 hours, the product becomes viscous, heat up to 120°C and react for 1 hour, cool to obtain polystyrene-wrapped, interspersed And grafted activated rubber powder.

Embodiment 2

[0018] Weigh 100 grams of 120-mesh rubber powder, put it into a 500 ml four-necked flask with stirring, heating, condensation, and nitrogen devices, add 80 grams of styrene containing 0.03% benzoyl peroxide by mass, and soak the rubber powder for 4 hours After the styrene permeates into the rubber powder, start stirring, protect with nitrogen, heat up to 100°C, react for 2 hours, the product becomes viscous, heat up to 120°C and react for 1 hour, cool to obtain polystyrene-wrapped, interspersed And grafted activated rubber powder.

Embodiment 3

[0020] Weigh 200 grams of 100-mesh rubber powder, wrap it with a filter cloth and place it in a quick extractor, use 500 ml of a 1:1 mixed solvent of benzene and isopropanol, extract at 100°C for 12 hours, and take out the filter cloth Dry the rubber powder in it. Take by weighing 100 grams of dried rubber powder and put it into a 500 milliliter four-necked flask with stirring, heating, condensation, and nitrogen devices, add 80 grams of styrene containing 0.01% benzoyl peroxide by weight and soak the rubber powder for 4 Hours, after the styrene has basically penetrated into the rubber powder, start stirring, protect with nitrogen, heat up to 80°C, react for 2 hours, the product becomes viscous, heat up to 100°C and react for 1 hour, cool to get polystyrene wrapped , interspersed and grafted activated rubber powder.

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Abstract

The invention provides activated waste rubber powder and a preparation method thereof. The components by weight of the activated waste rubber powder are: waste rubber powder accounts for 40 to 60 percent; activator accounts for 60 to 40 percent; and initiator accounts for 0.005 to 0.015 percent of the total weight of a composition, wherein the sum of the weight percentages of all the components is 100 percent. The preparation method is characterized in that fine rubber powder of waste tires and the activator form graft copolymer, interpenetrating polymer networks or wrapping-winding structures under the action of the initiator, so as to change the surface activity of the rubber powder and improve the compatibility between the rubber powder and polymer materials, particularly the polymer materials of the same type with the activator. The rubber powder can be used for the blending modification or copolymerization with polystyrene, polyvinyl chloride, polyethylene or polymethyl methacrylate and other materials, thereby improving the shock resistance of the materials, reasonably utilizing the waste tires, saving energy and reducing emission.

Description

Technical field: [0001] The invention relates to a technique for modifying waste rubber powder into activated waste rubber powder. The obtained activated waste rubber powder can be applied to the synthesis and modification research of polystyrene, polyvinyl chloride, polyethylene, polypropylene, epoxy resin, etc. , to improve the impact resistance of the material. Background technique: [0002] With the development of the rubber industry, a large number of waste rubber products, mainly waste tires, are abandoned every year in the world. How to effectively use them to save resources and prevent black pollution has attracted more and more attention. In recent years, in addition to the production of recycled rubber, waste rubber products have gradually developed into the production of rubber powder, that is, the waste rubber is crushed into powdery substances by mechanical means. This rubber powder can be used as rubber, plastic filler and composite material, and is widely use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F253/00C08F279/00C08J11/10C08L21/00
CPCY02W30/62
Inventor 马斐夏峥嵘陈昌青陈红祥李国麟李绵贵杨灿王若宇
Owner CHINA NAT OFFSHORE OIL CORP
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