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Preparation method of thermoplastic elastomer blend supercritical foam material

A thermoplastic elastomer and foaming material technology, applied in the field of foaming materials, can solve the problems of poor particle uniformity, high raw material cost, foam shrinkage, etc., and achieve the effects of excellent physical and mechanical properties, improved nucleation, and enhanced elasticity

Inactive Publication Date: 2020-04-17
FUJIAN XINGXUN NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a preparation method of a thermoplastic elastomer blend supercritical foaming material, which aims to improve the supercritical foaming material in the prior art, which is prone to foam shrinkage, cell collapse, large cells, and poor particle uniformity Phenomenon, high cost of raw materials, technical problems that compression set performance needs to be improved

Method used

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  • Preparation method of thermoplastic elastomer blend supercritical foam material
  • Preparation method of thermoplastic elastomer blend supercritical foam material
  • Preparation method of thermoplastic elastomer blend supercritical foam material

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0041] The first embodiment of the present invention provides a method for preparing a thermoplastic elastomer blend supercritical foam material, comprising the following steps:

[0042] (1) Put the TPU elastomer pellets into the oven, set the temperature at 80°C for 4 hours. Finally, add 95g of TPU into the internal mixer, and set the temperature at 170-180°C; add 5g of silicone rubber after melting, the amount of which is 5% of the total fraction, make it fully mixed with TPU, and then add 0.5g of DCP as a cross-linking agent. 0.5%; banburying at this temperature for 6 to 10 minutes to obtain a dynamically cross-linked TPU blend (the time should not be too long, the cross-linking structure will be destroyed if the banburying time is too long, resulting in a decrease in material performance);

[0043] (2) The TPU blend is subjected to granule drying treatment again, and is made into a plate through a flat vulcanizing machine, or injected into a plate by an injection molding m...

Embodiment 2

[0054] The second embodiment of the present invention provides a method for preparing a thermoplastic elastomer blend supercritical foam material, comprising the following steps:

[0055] (1) Put the TPEE elastomer pellets into the oven, set the temperature at 80°C for 4 hours. Finally, add 95g of TPEE into the internal mixer, and set the temperature at 160-170°C; add 5g of silicone rubber after melting, the amount is 5% of the total fraction, make it fully mixed with TPEE, and then add 0.5g of crosslinking agent DCP, the dosage The total part is 0.5%; banburying at this temperature for 6 to 10 minutes to obtain a dynamically crosslinked TPEE blend (the time should not be too long, the crosslinking structure will be destroyed if the banburying time is too long, resulting in a decrease in material performance);

[0056] (2) The TPEE blend is subjected to particle drying treatment again, and is made into a plate through a flat vulcanizing machine, or injected into a plate by an ...

Embodiment 3

[0065] The third embodiment of the present invention provides a method for preparing a thermoplastic elastomer blend supercritical foam material, comprising the following steps:

[0066] (1) Put the PEBAX elastomer pellets into the oven, set the temperature at 80°C for 4 hours. Finally, add 95g PEBAX into the internal mixer, and set the temperature at 150-160°C; add 5g of silicone rubber after melting, and the addition amount is 5% of the total fraction, make it fully mixed with PEBAX, and then add 0.5g of cross-linking agent DCP, The dosage is 0.5%; banburying at this temperature for 6-10 minutes to obtain a dynamic cross-linked PEBAX blend;

[0067] (2) The PEBAX blend is subjected to particle drying treatment again, and is made into a plate through a flat vulcanizing machine, or injected into a plate by an injection molding machine, and the thickness of the plate is 4mm.

[0068] (3) Put the board made of PEBAX blended elastomer into the autoclave by molding or injection m...

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Abstract

The invention provides a preparation method of a thermoplastic elastomer blend supercritical foam material, and relates to the field of foam materials. According to the method, silicone rubber or fluororubber is adopted as a nucleating agent, peroxide DCP, a vulcanizing agent BIPB or a DBPH is used as a crosslinking agent, mixing with a thermoplastic elastomer is conducted to obtain a blend, and then the blend is utilized for supercritical foaming to obtain the foam material. The technical problems that in the prior art, the supercritical foam material is prone to foam shrinkage, cell collapse, large cell size and poor particle uniformity, the raw material cost is high, and the compression permanent deformation performance needs to be improved are solved.

Description

technical field [0001] The invention relates to the field of foaming materials, in particular to a preparation method of a thermoplastic elastomer blend supercritical foaming material. Background technique [0002] In recent years, as people's requirements for the quality of life continue to improve and they pay more attention to their own health, the requirements for shoe materials are getting higher and higher when traveling and exercising. Comfortable, beautiful and light-weight foam materials have become the midsole of shoe materials. main research objectives. Thermoplastic elastomer foaming materials have attracted more attention, among which TPU, TPEE, and PEBAX are currently more popular thermoplastic elastomers. Compared with traditional EVA materials, they have the advantages of high resilience, low density, high wear resistance and weather resistance, yellowing resistance, and good molding processability. Supercritical fluid foaming technology solves the problems...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/02B29C44/34B29K75/00
CPCB29C44/02B29C44/3442B29C44/3469B29K2075/00
Inventor 张小海陈建亚
Owner FUJIAN XINGXUN NEW MATERIALS TECH CO LTD