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Method for commixing vulcanized rubber powder produced by utilizing waste rubber and rubber plastic material

A technology for vulcanized rubber powder and waste rubber, which is applied in the field of resource utilization of waste rubber. It can solve the problems of not being able to effectively improve and improve the performance of products, the compatibility of vulcanized rubber powder and the blending system, and the inability to improve vulcanization. Issues such as the amount of rubber powder blending, to achieve excellent physical and chemical properties, increase the use value, low temperature and other performance improvements

Inactive Publication Date: 2010-08-11
刘扬生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the compatibility problem of vulcanized rubber powder and blending system is not properly solved, it is impossible to increase the blending amount of vulcanized rubber powder, and it is impossible to effectively improve and improve the performance of the product

Method used

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  • Method for commixing vulcanized rubber powder produced by utilizing waste rubber and rubber plastic material
  • Method for commixing vulcanized rubber powder produced by utilizing waste rubber and rubber plastic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: Preparation and blending application of reactive vulcanized rubber powder blended with thermoplastics

[0021] Step 1. Waste tire vulcanized rubber powder with a particle size below 150 microns (that is, passing through a 100-mesh sieve) is put into the mixer (or kneader), and compound additives are added according to the following ratio: active dispersant: n-butyl xanthogen Sodium acid, 1.0%, disproportionated rosin, polymerized rosin, each 0.5%; Compatibility modifier: piperylene petroleum resin, 1.0%, xylene-formaldehyde resin, 0.5%, stearic acid amide, oleic acid amide, 0.5% each. Stir for 5-10 minutes to mix evenly.

[0022] Step 2: Blending with thermoplastics, the ratio of ingredients: polystyrene / PS, 20%; linear low density polyethylene / LLDPE, 20%; chlorinated polyethylene / CPE, 10%; active vulcanized rubber powder, 50% %; processing compound species and dosage, composite antioxidant 1010, 0.3%.

[0023] Step 3: Melting and blending with an extruder...

Embodiment 2

[0025] Example 2: Preparation and blending application of active vulcanized rubber powder blended with thermoplastic rubber

[0026] Step 1. Waste tire vulcanized rubber powder with a particle size below 150 microns (that is, passing through a 100-mesh sieve) is put into the mixer (or kneader), and compound additives are added according to the following ratio: active dispersant: n-butyl xanthogen Zinc acid, 1.0%, hydrogenated rosin, maleic rosin, each 0.5%; Compatibility modifier: Bicyclic

[0027] Pentadiene petroleum resin, 1.0%, xylene-formaldehyde resin, 0.5%, stearic acid amide, erucic acid amide, each 0.5%. Stir for 5-10 minutes to mix evenly.

[0028] Step 2. Blending with thermoplastic rubber. Ratio of ingredients: styrene-butadiene-styrene block copolymer / SBS, 60%; active vulcanized rubber powder, 40%; compounding agent type and dosage, compound antioxidant Agent 1010, 0.3%.

[0029] Step 3: Melting and blending with an open mill to make flakes, and directly calend...

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Abstract

The invention relates to a method for commixing vulcanized rubber powder produced by utilizing waste rubber and a rubber plastic material. The method comprises the following process steps of: 1, throwing vulcanized rubber powder with particle diameter of less than 150 microns of a waste tyre into a mixer or a kneader, adding a composite additive into the mixer or the kneader, and uniformly stirring and mixing the mixture to obtain active vulcanized rubber powder; 2, feeding and primarily mixing the active vulcanized rubber powder serving as one of raw material component, thermoplastic plastic or thermoplastic rubber and other accessory ingredients; and 3, directly performing smelting and molding machining on the materials after primary mixing, or through smelting and commixing the materials, graduating the mixture by an extruder first, and hen performing molding machining after burdening again, wherein a molding method comprises extrusion molding, injection molding and calendering molding. The composite additive for preparing the active vulcanized rubber powder comprises an active dispersant and a compatibilization modifier. The active vulcanized rubber powder can obviously increase the mixing amount, remarkably reduce the raw material cost of products, and effectively improve the dispersion uniformity, interface compatibility and bonding strength; and the basic performance of the obtained products is comprehensively improved.

Description

(1) Technical field [0001] The invention relates to a method for blending vulcanized rubber powder produced from waste rubber products such as waste tires with rubber and plastic materials, and belongs to the field of resource utilization of waste rubber. (2) Background technology [0002] Crushing waste rubber products such as waste tires (that is, vulcanized rubber) into vulcanized rubber powder is the main way to recycle waste rubber at present. Although the vulcanized rubber powder made by mechanical pulverization is a small particle, its structure is still a network of three sulfur bond states of monosulfide, disulfide and polysulfide formed at the crosslinking point of vulcanized rubber. The structure is a random polymer elastomer with chemical crosslinking and physical condensation. When blended with other polymers, the compatibility with the matrix material is very poor. The blended system with rubber materials is a semi-compatible system, and the blended system wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L21/00C08L25/06C08L23/08C08L23/28C08K5/38C08K5/20C08L53/02C08J11/18C08J11/28
CPCY02W30/62
Inventor 周子凯
Owner 刘扬生
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