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Modified wholly-vulcanised polyolefinic thermoplastic elastomer and its preparation method

A technology of thermoplastic elastomer and full vulcanization, which is applied in the field of thermoplastic elastomer, can solve the problems of dispersion, and achieve the effect of simple process, good tensile strength, and easy operation and application

Active Publication Date: 2006-05-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the inventors have found through research that due to the ultra-fine powder rubber with a cross-linked structure, the particle size is very small and is not easy to stick, so it is very easy to disperse in the plastic matrix, and at the same time, the synergistic effect can make the nano-white The dispersibility of carbon black is also improved, so the strength of the final thermoplastic elastomer can be improved by adding a small amount of nano white carbon black

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Mix cross-linked styrene-butadiene powder rubber with an average particle size of about 100nm and polypropylene (Qilu Petrochemical, brand PPR) at a ratio of 60 / 40, and then add 1 part of cross-linked styrene-butadiene powder rubber based on 100 parts Nanoscale white carbon black (Japanese Tokuyama Soda company, particle diameter 5~30nm) and the antioxidant 1010 (Swiss Ciba Jiaji production) of composition gross weight 0.5%wt, use the ZSK-25 of German WP company Type twin-screw extruder for extrusion and granulation. The temperatures of each section of the extruder are: 170°C, 190°C, 190°C, 190°C, 190°C and 195°C (head temperature). The pellets were made into standard specimens by injection molding, and various performance tests were carried out. The measured results of the fully vulcanized styrene-butadiene rubber / polypropylene thermoplastic elastomer are listed in Table 1.

[0026] The cross-linked styrene-butadiene powder rubber is prepared in this way:

[0027]The ...

Embodiment 2

[0029] Except that the addition of nanoscale white carbon black (same as Example 1) becomes based on 100 parts of cross-linked styrene-butadiene powder rubber, adding 2 parts, all the other are the same as in Example 1, and the total vulcanized styrene-butadiene rubber measured / polypropylene thermoplastic elastomer The results are listed in Table 1.

Embodiment 3

[0031] Except that the addition of nanoscale white carbon black (same as Example 1) becomes based on 100 parts of cross-linked styrene-butadiene powder rubber, adding 3 parts, all the other are the same as in Example 1, and the total vulcanized styrene-butadiene rubber measured / polypropylene thermoplastic elastomer The results are listed in Table 1.

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Abstract

The invention provides the modified fully vulcanizate polyolefin thermoplastic elastomers and its preparation method, and relates its technology field. , The fully vulcanizate polyolefin thermoplastic elastomers comprises the polyolefine resin, powder rubber and nano silicon dioxide. The said powder rubber is rubber particle possessing the crosslinked structure, the mean particle diameter of which is 20nm-1000nm, and the gelatin concent of which is 60wt% or more than 60wt%. The mean particle diameter of nano silicon dioxide is 1-100nm. The proportion by weight of powder rubber and polyolefin thermoplastic elastomers is 30í†70-75í† 25. The content of nano silicon dioxide is 0.5-10% of powder rubber. The powder rubber and inorganic particle are dispersed homogeneously in the polyolefin thermoplastic elastomers, so the fully vulcanizate polyolefin thermoplastic elastomers possesses good hot strength and wide application.

Description

technical field [0001] The present invention relates to a thermoplastic elastomer, and furthermore, relates to a fully vulcanized polyolefin thermoplastic elastomer obtained by modification with high strength and a preparation method thereof. Background technique [0002] Fully vulcanized thermoplastic elastomer is a new material developed in the 1980s. It is prepared by mechanically blending elastomers and rigid plastics under certain conditions using dynamic vulcanization technology. This kind of thermoplastic elastomer is completely cross-linked rubber phase dispersed in the plastic matrix in phase state. The fully vulcanized thermoplastic elastomer is prepared by the dynamic vulcanization method, and the vulcanization of the rubber is accompanied by the blending of the materials. The particle size of the rubber phase is mainly determined by the balance between the mechanical blending shear and the chemical crosslinking reaction, so the rubber It is difficult to make th...

Claims

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Application Information

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IPC IPC(8): C08L21/00C08K3/36C08L23/00
Inventor 张晓红乔金樑谭邦会刘轶群高建明黄帆宋志海陈志达魏根栓
Owner CHINA PETROLEUM & CHEM CORP
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