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A kind of thermoplastic micro-airbag polymer elastomer material and preparation method thereof

A technology of elastomer materials and polymer materials, which is applied in the field of thermoplastic micro-airbag polymer elastomer materials and its preparation, can solve problems such as instability and simple control methods, and achieve the effect of improving energy absorption and energy storage

Active Publication Date: 2019-01-18
NANTONG DE NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the structural properties and processing technology of the material itself, the understanding of the foaming principle and many other aspects, the control method of the expanded thermoplastic polymer elastic material in China is simple and unstable.

Method used

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  • A kind of thermoplastic micro-airbag polymer elastomer material and preparation method thereof
  • A kind of thermoplastic micro-airbag polymer elastomer material and preparation method thereof
  • A kind of thermoplastic micro-airbag polymer elastomer material and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0063] As a preferred embodiment, the preparation method of the thermoplastic microbag polymer elastomer material includes the following steps:

[0064] (1) Feed the supporting framework polymer material, the pressure-resistant slow-resilient polymer material and the nucleating agent from the front end of the twin-screw extruder, and the foaming agent from the mid-section feeding port of the twin-screw extruder to make After the raw materials are fully hot-melted and mixed, they enter the static mixer for further homogenization, and then are pressure-controlled and quantitatively transported by the melt pump;

[0065] (2) The hot melt pumped by the melt enters the underwater pelletizing chamber through the die to cut pellets, and is carried out and separated by the process water. The resulting pellets are screened and dried to form the target product.

[0066] As a more preferred embodiment of the above-mentioned preferred embodiment, the temperature of the twin-screw extruder in ste...

Embodiment 1

[0075] According to the above as figure 1 The process flow of preparing the thermoplastic micro airbag polymer elastomer material of the present invention according to the following raw material formula and process conditions:

[0076] Among them, the molecular weight M w In 150K~300K (here K means unit thousand) of polyether thermoplastic polyurethane, adding ratio 75% (weight percentage, the same below), molecular weight M w In the 50K~100K polyether thermoplastic polyurethane, the adding ratio is 20%, the blowing agent is CO 2 , The addition amount is 4.5%, the nucleating agent is calcium carbonate, and the addition amount is 0.5%. Twin-screw extruder L / D=40, screw heating temperature 160-220℃, static mixer temperature 140-180℃, melt pump inlet pressure 100-120bar, process water pressure about 12bar, controlled pressure release The difference (that is, the pressure difference between the high-pressure hot melt at the die outlet and the process water in the underwater cutting ch...

Embodiment 2

[0080] According to the above as figure 1 The process flow of preparing the thermoplastic micro airbag polymer elastomer material of the present invention according to the following raw material formula and process conditions:

[0081] Among them, the molecular weight M w In the polyether type thermoplastic polyurethane of 300K~500K (here K means unit thousand), the adding ratio is 60% (weight percentage, the same below), and the molecular weight is M w Polyether thermoplastic polyurethane at 150K~250K, adding 35%, blowing agent N 2 , The addition amount is 4.95%, the nucleating agent is carbon black, and the addition amount is 0.05%. Twin screw extruder L / D=56, screw heating temperature 160-220℃, static mixer temperature 140-180℃, melt pump inlet pressure 100-150bar, process water pressure about 6bar, controlled pressure release The difference (that is, the pressure difference between the high-pressure hot melt at the die outlet and the process water in the underwater cutting cha...

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Abstract

The invention relates to a thermoplastic micro-airbag polymer elastomer material and a preparation method thereof. The thermoplastic micro-airbag polymer elastomer material includes the following components in weight percentage: supporting skeleton polymer material 0.1-97%, pressure-resistant and slow-rebound 0.1-97% of the polymer material, 0.01-0.5% of the nucleating agent, and 0.1-10% of the foaming agent; the supporting skeleton polymer material is a polymer material with high molecular weight, high hardness, high crystallization or high polarity, so The pressure-resistant slow-rebound polymer material is a low molecular weight, low hardness, low crystallization to amorphous, low polar / non-polar polymer material corresponding to the supporting skeleton polymer material. Compared with the prior art, the polymer elastomer material prepared by the present invention has an intertwined network formed by the micro-airbag structure and open cells to form an interpenetrating structure, excellent material properties such as resilience, neat cushioning and feedback, and a sense of touch and comfort. High, controllable expansion ratio, etc.

Description

Technical field [0001] The invention relates to the field of polymer material preparation, in particular to a thermoplastic micro airbag polymer elastomer material and a preparation method thereof. Background technique [0002] Thermoplastic polymer elastic materials are widely used in manufacturing facilities, equipment, tools and consumables used in production and life. With the development of society, the requirements for environmental protection, energy saving, and consumption reduction have become more and more urgent. Thermoplastic polymer elastic materials have also begun a large number of lightweight experiments and verifications and continue to promote and apply. For example, polypropylene PP foam, polyethylene PE foam, polystyrene PS foam, polyester PET foam, polyamide PA foam, and polyurethane TPU foam. At present, the common process routes for the expansion of thermoplastic polymer elastomers are: expansion foaming in the casting mold, injection expansion foaming, ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/08C08L75/06C08L27/18C08L67/02C08L77/00C08K3/26C08K3/34C08K3/04C08K7/24C08J9/12C08J9/14B29B9/06
CPCB29B9/065C08J9/122C08J9/141C08J2203/06C08J2203/14C08J2203/182C08J2367/02C08J2375/06C08J2375/08C08J2377/00C08J2475/06C08J2475/08C08K3/04C08K2003/265C08K2201/011C08L67/02C08L75/06C08L75/08C08L77/00C08L2203/14C08L2205/025C08L2205/03C08L2205/24C08L2207/04C08K3/26C08K3/34C08K7/24C08L27/18B29B9/12B29B2009/125B29K2021/003B29K2075/00B29K2077/00B29K2105/04B29C48/0012B29C48/0022B29C48/022B29C48/297B29C48/345B29C48/362B29C48/37B29C48/40B29C48/625B29C48/92B29C2948/92514B29C2948/92704B29K2105/041B29K2105/251C08J9/0019C08J9/0066C08J2201/03C08J2367/00C08J2375/04C08J2475/04
Inventor 陈乔健郭杨龙
Owner NANTONG DE NEW MATERIAL CO LTD
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