Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of waste tire rubber/polyethylene foam material

A waste tire rubber and polyethylene foaming technology, which is applied in the field of preparation of polymer blend materials, can solve the problems of no competitive advantage, poor physical properties, easy deformation of products, etc., and achieve improved interface interaction and compatibility , simple preparation process and wide application range

Inactive Publication Date: 2012-05-02
SICHUAN UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low hardness of polyolefin foam, the product is easy to deform, and its physical properties are poor. It does not have a competitive advantage in the foam elastomer market.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of waste tire rubber/polyethylene foam material
  • Preparation method of waste tire rubber/polyethylene foam material
  • Preparation method of waste tire rubber/polyethylene foam material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Drying of waste tire rubber powder

[0046] Spread a thin layer of waste tire rubber powder with an average particle size of 100 μm in a blast oven, and dry it at 100°C for 0.5h;

[0047] (2) Solid phase mixing

[0048]Add 20 parts of dried waste tire rubber powder and 100 parts of recycled low-density polyethylene pellets into a mechanochemical reactor for solid-phase blending and shearing. The static pressure of the two grinding discs is controlled at 12000kN, and the rotation speed is 150rpm. After the milling cycle, a uniformly mixed powdery compound is formed, which is ready for use;

[0049] (3) Thermoplastic processing

[0050] Put the uniformly mixed above-mentioned materials together with 1 part of sodium bicarbonate, 1 part of antioxidant 1010, 2 parts of dicumyl peroxide, 2 parts of zinc oxide and 1 part of zinc stearate into a Brabender plastifier. Melt blending, mixing temperature 150°C, rotor speed 30rpm, time 6min;

[0051] (4) Molded foam

[005...

Embodiment 2

[0054] (1) Drying of waste tire rubber powder

[0055] Spread a thin layer of waste tire rubber powder with an average particle size of 180 μm in a blast oven and dry at 60°C for 2 hours;

[0056] (2) Solid phase mixing

[0057] Add 30 parts of dried waste tire rubber powder and 100 parts of high-density polyethylene pellets into a mechanochemical reactor for solid-phase blending and shearing. The static pressure of the two grinding discs is controlled at 18000 kN, and the rotation speed is 80 rpm. After the grinding cycle, a uniformly mixed powder compound is formed, which is ready for use;

[0058] (3) Thermoplastic processing

[0059] Mix the above materials uniformly with 2 parts of calcium bicarbonate, 10102 parts of antioxidant, 1 part of 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane, 1 part of zinc oxide and hard 1 part of calcium fatty acid was added to a Brabender plasticizer for melt blending, the mixing temperature was 120°C, the rotor speed was 50 rpm, and the mi...

Embodiment 3

[0063] (1) Drying of waste tire rubber powder

[0064] Spread a thin layer of waste tire rubber powder with an average particle size of 250 μm in a blast oven and dry at 80°C for 1 hour;

[0065] (2) Solid phase mixing

[0066] Add 40 parts of dried waste tire rubber powder and 100 parts of low-density polyethylene pellets into a mechanochemical reactor for solid-phase blending and shearing. The static pressure of the two grinding discs is controlled at 22000kN, and the rotation speed is 30rpm. After the grinding cycle, a uniformly mixed powder compound is formed, which is ready for use;

[0067] (3) Thermoplastic processing

[0068] Add the uniformly mixed above-mentioned materials, 5 parts of azodicarbonamide, 2 parts of dicumyl peroxide, 4 parts of zinc oxide, 1.5 parts of stearic acid, and 10102 parts of antioxidant into a Brabender plastifier. Melt blending, mixing temperature 135°C, rotor speed 50rpm, time 10min;

[0069] (4) Molded foam

[0070] Put 15 parts of the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of waste tire rubber / polyethylene foam material, which is characterized in that: 20 to 40 weight parts of waste tire rubber and 100 weight parts of polyethylene are added into a dynamic chemical reactor (ZL95111258.9) to be milled at room temperature so that part of the waste tire rubber (WTR) is desulfurized and the surface thereof is activated; simultaneously, the WTR and the PE are mixed at high efficiency to obtain the WTR / PE composite powder which is uniformly mixed with the average grain size of 10 to 100mu m; the composite powder is added into a mixer, then is sequentially added with 1 to 5 weight parts of foaming agent, 1 to 3 weight parts of cross linker, 0.5 to 2 weight parts of antioxidant, 0.5 to 4 weight parts of zinc oxide and 0.5to 2 weight parts of lubricant to be melted and mixed to obtain the mixture of the waste tire rubber / polyethylene foam material; and then the mixture is put into a plate rheometer to be stamped, foamed and formed to obtain the waste tire rubber / polyethylene foam material. The foam material has the advantages of environmental protection, low energy consumption, high production efficiency and relative lower production cost.

Description

technical field [0001] The invention relates to a preparation method of waste tire rubber powder / polyethylene foam material, which belongs to the field of preparation of polymer blend materials. Background technique [0002] With the rapid development of the automobile industry, the disposal of waste tires has become a major problem in today's society. At present, there are three main ways to deal with waste tires: burning, landfilling and recycling. Among them, recycling is the most environmentally friendly and effective way to solve the problem of waste tires. Since waste tire rubber is a three-dimensional cross-linked polymer after vulcanization of rubber, it cannot be melt-processed, let alone blended with other thermoplastic materials as a matrix. Waste tire rubber contains a large amount of elastomer, carbon black, zinc oxide, stearic acid, vulcanizing agent, process oil and other substances. Most tire rubber contains natural rubber and styrene-butadiene rubber, whi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B29C67/20
Inventor 卢灿辉梁梅朱健张新星
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com