Thermoplastic micro-sac polymer elastomer material and preparation method thereof

A thermoplastic polymer and polymer material technology, applied in the field of polymer material 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: 2017-10-27
NANTONG DE NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the structural properties and processing technology of the material itself, the understanding of the foaming princip

Method used

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  • Thermoplastic micro-sac polymer elastomer material and preparation method thereof
  • Thermoplastic micro-sac polymer elastomer material and preparation method thereof
  • Thermoplastic micro-sac polymer elastomer material and preparation method thereof

Examples

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preparation example Construction

[0063] As a preferred embodiment, the preparation method of thermoplastic micro-airbag polymer elastomer material comprises the following steps:

[0064] (1) Feed the supporting skeleton polymer material, the pressure-resistant slow-rebound polymer material and the nucleating agent from the feed port at the front end of the twin-screw extruder, and feed the foaming agent from the feed port in the middle of the twin-screw extruder, so that After the hot-melt mixing of each raw material is sufficient, it enters the static mixer for further homogenization, and then is controlled and quantitatively transported by the melt pump;

[0065] (2) The hot melt pumped out by the melt pump enters the underwater pelletizing chamber through the die head to be pelletized, and is taken out by the process water for separation, and the obtained pellets are screened and dried to form the target product.

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

Embodiment 1

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

[0076] Among them, molecular weight M w In 150K~300K (here K represents the unit thousand) polyether thermoplastic polyurethane, the addition ratio is 75% (weight percentage, the same below), the molecular weight M w For polyether thermoplastic polyurethane at 50K~100K, the addition ratio is 20%, and the foaming agent is CO 2 , the addition amount is 4.5%, and the nucleating agent is calcium carbonate, and the addition amount is 0.5%. Twin-screw extruder length-to-diameter ratio L / D=40, screw heating temperature 160-220°C, static mixer temperature 140-180°C, melt pump inlet pressure 100-120bar, process water pressure about 12bar, control the release pressure The difference (that is, the pressure difference between the high-pressure hot melt at the ...

Embodiment 2

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

[0081] Among them, molecular weight M w Polyether thermoplastic polyurethane at 300K~500K (K here represents the unit thousand), the addition ratio is 60% (weight percentage, the same below), the molecular weight M w In 150K~250K polyether thermoplastic polyurethane, the addition ratio is 35%, and the foaming agent is N 2 , the addition amount is 4.95%, and the nucleating agent is carbon black, and the addition amount is 0.05%. Twin-screw extruder length-to-diameter ratio L / D=56, screw heating temperature 160-220°C, static mixer temperature 140-180°C, melt pump inlet pressure 100-150bar, process water pressure 6bar or so, control pressure release The difference (that is, the pressure difference between the high-pressure hot melt at the outlet of th...

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Abstract

The invention relates to a thermoplastic micro-sac polymer elastomer material and a preparation method thereof. The material is prepared from the following components in percentage by weight: 0.1-97 percent of a support frame polymer material, 0.1-97 percent of pressure-resistance slow-rebound polymer material, 0.01-0.5 percent of a nucleating agent, and 0.1-10 percent of a foaming agent, wherein the support frame polymer material is a high-molecular-weight, high-hardness, high-crystalline or high-polarity polymer material; the pressure-resistance slow-rebound polymer material is a low-molecular-weight, low-hardness, low-crystalline to no irregular shape, low-polarity/no-polarity polymer material. Compared with the prior art, the material has the advantages that a winding network formed by the micro-sac structure and opening pores achieves an interpenetration structure, the rebound force and other material physical performance are excellent, buffer feedback is quick, contact and comfortable performance are high, exfoliated volume is controllable and the like.

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 the manufacture of production and living facilities, equipment, tools and consumables. With the development of society to meet the requirements of environmental protection, energy saving and consumption reduction, the demand for lightweight materials has become more and more urgent. Thermoplastic polymer elastic materials have also begun a large number of lightweight experiments and verifications and continued to promote their applications. For example, polypropylene PP foam, polyethylene PE foam, polystyrene PS foam, polyester PET foam, polyamide PA foam and polyurethane TPU foam, etc. At present, the common process routes for the expansion of thermoplastic polymer elastomers include: expans...

Claims

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Application Information

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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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