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Vibration-reducing thermoplastic elastomer material preparation method

A thermoplastic elastomer and plasticizer technology, which is applied in the field of preparation of shock-absorbing thermoplastic elastomer materials, can solve problems such as poor flame retardancy, poor comprehensive performance, and melting drops, and achieve enhanced shock-absorbing effects, improved mechanical properties, and reduced The effect of resilience

Inactive Publication Date: 2017-02-15
QINGDAO LANNONGGU AGRI PROD RES & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the flame retardancy of thermoplastic polyurethane is poor. Once burned, the flame is very violent and accompanied by thick black smoke, accompanied by serious droplet phenomenon, which has the risk of expanding the fire.
In addition, thermoplastic polyurethane has poor hydrolysis resistance and aging resistance
After adding flame retardants to thermoplastic polyurethane, the mechanical properties such as tensile strength, elongation at break, etc. are often significantly reduced while improving the flame retardancy, and the overall performance is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for preparing a shock-absorbing thermoplastic elastomer material, characterized in that it specifically comprises the following steps:

[0018] (1) Preparation of polyisoprene resin: The reaction kettle is pumped and replaced several times with nitrogen, and isoprene and carbon nanotubes / silica-loaded titanium tetrachloride are taken according to the molar ratio of 50:1, and the metered amount of titanium tetrachloride is added in sequence In the reaction kettle, adding isoprene to the reaction kettle is 6% aluminum chloride and 5% 4,4-bis(tert-butyl peroxy) n-butyl valerate, and the temperature is controlled at 43 ° C. Polymerized for 5h, dried in vacuum at 40°C to constant weight;

[0019] (2) Mixed rubber: put chlorinated polyethylene and ethylene-vinyl acetate rubber into the internal mixer respectively according to the weight ratio of 5:3, control the temperature of the internal mixer at 173°C, and add the mixture in order to achieve a weight percentage of...

Embodiment 2

[0025] A method for preparing a shock-absorbing thermoplastic elastomer material, characterized in that it specifically comprises the following steps:

[0026] (1) Preparation of polyisoprene resin: The reaction kettle is pumped and replaced several times with nitrogen, and isoprene and carbon nanotubes / silica-loaded titanium tetrachloride are taken according to the molar ratio of 50:1, and the metered amount of titanium tetrachloride is added in sequence In the reactor, add isoprene to the reactor with 7% aluminum chloride and 6% 4,4-bis(tert-butyl peroxy) n-butyl valerate, and control the temperature at 44°C. Polymerized for 4.5h, vacuum dried at 40°C to constant weight;

[0027] (2) Mixed rubber: Put chlorinated polyethylene and ethylene-vinyl acetate rubber into the internal mixer respectively according to the weight ratio of 5:3, control the temperature of the internal mixer at 175°C, and add the mixture in sequence to a weight percentage of 5.5% The filler and the plast...

Embodiment 3

[0033] A method for preparing a shock-absorbing thermoplastic elastomer material, characterized in that it specifically comprises the following steps:

[0034] (1) Preparation of polyisoprene resin: The reaction kettle is pumped and replaced several times with nitrogen, and isoprene and carbon nanotubes / silica-loaded titanium tetrachloride are taken according to the molar ratio of 50:1, and the metered amount of titanium tetrachloride is added in sequence In the reaction kettle, adding isoprene to the reaction kettle is 8% aluminum chloride and 7% 4,4-bis(tert-butyl peroxy) n-butyl valerate, and the temperature is controlled at 45°C in advance. Polymerized for 4h, vacuum dried at 40°C to constant weight;

[0035] (2) Mixed rubber: Put chlorinated polyethylene and ethylene-vinyl acetate rubber into the internal mixer respectively according to the weight ratio of 5:3, control the temperature of the internal mixer at 177°C, and add the mixture in order to achieve a weight percent...

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Abstract

The present invention discloses a vibration-reducing thermoplastic elastomer material preparation method, which is characterized by specifically comprising: (1) preparing a polyisoprene resin; (2) preparing a mixing rubber; and (3) preparing a thermoplastic elastomer material. According to the present invention, the tensile strength of the prepared polyisoprene resin is 19-41 Mpa; the mechanical properties of the thermoplastic elastomer material are remarkably improved; with the mixing rubber, the obtained material has the weather resistance and the aging resistance of the rubber, has the strength and the plasticity of the plastic, and further has advantages of excellent tensile strength and excellent compressive strength; the flame retardant agent is uniformly dispersed on the thermoplastic elastomer surface, such that the material can achieve the UL-94V-0-grade flame retardant effect, and the environmental protection requirements can be met; and the polyisoprene resin is added so as to reduce the resilience of the material to a certain extent, and the vibration reducing effect is enhanced.

Description

technical field [0001] The invention belongs to the technical field of thermoplastic elastomer materials, and in particular relates to a preparation method of shock-absorbing thermoplastic elastomer materials. Background technique [0002] With the rapid development of my country's automobile industry, the demand for rubber tires and various automotive rubber accessories has grown rapidly. At present, my country's annual rubber consumption has reached 5 million tons, ranking first in the world. At present, rubber resources are in short supply, and prices are rising. Rubber is a relatively common shock-absorbing material. It has certain advantages due to its superior shock-absorbing performance and aging resistance. However, rubber has disadvantages such as long vulcanization cycle and difficult molding, which limit its large-scale use to a certain extent. Thermoplastic elastomers It has many advantages such as direct injection molding and recyclable utilization, so it has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08L23/28C08L23/08C08L9/00C08L91/00C08K13/04C08K5/12C08K3/32C08K5/3415C08K7/24C08K5/5313C08F36/08B29C47/92B29C48/92
Inventor 李红伟
Owner QINGDAO LANNONGGU AGRI PROD RES & DEV