Thermoplastic elastomer composite composition suitable for in-mould blowing

A composite material and plasticity technology, which is applied in the field of in-mold foaming materials, can solve problems such as labor-intensive and inability to achieve lightweight

Inactive Publication Date: 2016-12-07
EEFOAM MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, in order to improve the previous technology, the existing materials used as external foaming have defective products and waste of materials due to the difficulty in controlling the size; while the existing materials used as in-mold foaming cannot achieve the purpose of light weight And heterogeneous materials then have the problems of consuming manpower, time and materials; therefore, the present invention provides a thermoplastic elastomer composite material composition suitable for in-mold foaming, which mainly includes: - 50-100 parts by weight A thermoplastic elastomer (thermoplastic elastomer) in parts by weight; a foaming agent group of 1-10 parts by weight, the foaming agent group is 4,4 oxobisphenylsulfonylhydrazide (P,P-Oxybis Benzene Sulfonyl Hydrazide) and micro-capsule blowing agent (micro-capsule blowing agent); after the thermoplastic elastomer (thermoplasticelastomer), the blowing agent group and other components are melted, mixed, granulated or tableted , which can be used for in-mold foaming; in this way, the size can be easily controlled, defective products can be reduced, material waste can be reduced, weight can be reduced, dissimilar materials can be bonded together, time and materials can be saved, etc.

Method used

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  • Thermoplastic elastomer composite composition suitable for in-mould blowing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 90 parts by weight of styrene elastomer, 5 parts by weight of styrene-ethylene / butylene-styrene and its oil-extended composite material (styrene-ethylene / butylene-styrene and white wax oil are first soaked or granulated obtain), 2.5 parts by weight of 4,4 oxobisphenylsulfonyl hydrazide and 3.5 parts by weight of microcapsule blowing agent, 0.8 parts by weight of dicumyl peroxide and 0.2 parts by weight of cyanuric acid three The allyl ester is mixed into the internal mixer, and fused at a high temperature of 100°C. After mixing evenly, it is put into the single-screw granulator to form particles. Then, after weighing the above particles, put them into The mold in the molding machine is heated and foamed at 150°C, and the foaming in the mold is completed after cooling, and the density of the foamed product is 0.28g / cm 3 .

Embodiment 2

[0026] 65 parts by weight of polypropylene elastomer, 2 parts by weight of 4,4 oxobisbenzenesulfonyl hydrazide, 4 parts by weight of microcapsule blowing agent, 5 parts by weight of styrene-butadiene-styrene and its Oil-extended composite material (obtained after soaking or granulating styrene-butadiene-styrene and white wax oil), 30 parts by weight of styrene-ethylene / butylene-styrene and its oil-extended composite material, 1.5 parts by weight Dicumyl peroxide and 1.2 parts by weight of triallyl cyanurate are mixed into a banburyer, and fused at a high temperature of 120°C. After mixing evenly, they are then put into a double-roller tablet machine to produce tablets. , and then, after weighing the above-mentioned sheet, put it into the mold in the molding machine whose temperature has been set, heat and foam at 170°C, and complete the foaming in the mold after cooling. The density of the foamed product is 0.24g / cm 3 .

Embodiment 3

[0028] 50 parts by weight of thermoplastic polyurethane elastomer, 2 parts by weight of 4,4 oxobisphenylsulfonyl hydrazide, 3 parts by weight of microcapsule foaming agent, 40 parts by weight of styrene-butadiene-styrene and Its oil-extended composite material (obtained after soaking or granulating styrene-butadiene-styrene and white wax oil first), 0.5 parts by weight of 1,4-bis-tert-butylperoxycumene, 0.1 parts by weight of Triallyl isocyanurate, 5 parts by weight of calcium carbonate and 5 parts by weight of maleic anhydride and polyethylene graft copolymer or (maleic anhydride and EVA graft copolymer) are mixed and put into a banbury mixer, Carry out high-temperature fusion at 150°C, knead evenly, and then put it into the double-roller tablet machine to output the sheet. Then, after weighing the above-mentioned sheet, put it into the mold in the molding machine with the temperature set, and pass through 170 Heating at ℃, foaming, and foaming in the mold is completed after ...

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Abstract

The invention relates to a thermoplastic elastomer composite composition suitable for in-mould blowing. The thermoplastic elastomer composite composition mainly comprises a thermoplastic elastomer, and a blowing agent group which includes p,p-oxybis benzene sulfonyl hydrazide and a micro-capsule blowing agent; the thermoplastic elastomer and the blowing agent group are melted, the melted material is mixed, the obtained mixture is subjected to granulation or milling treatment, and the obtained material can be used for the in-mould blowing; and therefore, the purposes of easily controlling the size, reducing defective products, reducing waste of materials, and achieving light weight are achieved, and the thermoplastic elastomer composite composition has the efficacies of integral adhering of dissimilar materials, saving time and materials and the like.

Description

technical field [0001] The invention relates to the field of in-mold foaming materials, in particular to a thermoplastic elastomer composite material composition suitable for in-mold foaming. Background technique [0002] According to the existing foaming technology, it is mainly divided into out-of-mold foaming and in-mold foaming. [0003] However, in the existing out-of-mold foaming, because the foaming process will first expand and then shrink to a stable level, the size of the foamed finished product is not easy to control, that is, the size of the foamed product will be much larger than the mold, and it is easy to Due to the instability of size, defective products are produced, and excessively large foamed products will also cause waste of materials. [0004] Therefore, because the size of the foamed finished product made by in-mold foaming is controlled, there will be less waste of material and generation of defective products. [0005] However, as far as the materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L23/20C08L23/12C08L53/02C08L91/06C08L75/04C08L51/06C08K5/14C08K5/3492C08K3/26C08K3/34C08J9/04C08J9/10
Inventor 吴俊雄
Owner EEFOAM MATERIALS CO LTD
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