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Modified thermoplastic polyurethane elastomer and preparation method thereof

A thermoplastic polyurethane and thermoplastic elastomer technology, which is applied in the field of modified thermoplastic polyurethane elastomer and its preparation, can solve the problems of poor weather resistance and poor moldability of thermoplastic polyurethane elastomer, and improve product quality, weather resistance, and service life Effect

Inactive Publication Date: 2017-01-04
锦州希尔达汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a modified thermoplastic polyurethane elastomer and a preparation method thereof which solves the problems of poor formability and poor weather resistance of the existing thermoplastic polyurethane elastomer (TPU), which has good molding performance and ensures fluidity during the production process of the product And mold release, significantly improve product quality, and significantly reduce production costs

Method used

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  • Modified thermoplastic polyurethane elastomer and preparation method thereof
  • Modified thermoplastic polyurethane elastomer and preparation method thereof
  • Modified thermoplastic polyurethane elastomer and preparation method thereof

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Embodiment 1

[0029] The modified thermoplastic polyurethane elastomer is composed of the following raw materials in weight percentage: thermoplastic polyurethane elastomer (TPU) 50%; thermoplastic elastomer (TPE) 30%; filler 5%; lubricant 3%; antioxidant 2%; 8% compatibilizer; 2% anti-UV agent. Among them, the thermoplastic elastomer (TPE) adopts a TPE with a hardness of 75A and a melt index of 20 g / 10 min at a melting temperature of 190° C. and a load of 5 kg. The compatibilizer is MAH graft with SEBS as base material, calcium carbonate is used as filler, polyethylene wax is used as lubricant, 1010 is used as antioxidant, and UV326 is used as anti-UV agent.

[0030] Preparation:

[0031] 1), thermoplastic polyurethane elastomer (TPU), thermoplastic elastomer (TPE), filler, lubricant, antioxidant, compatibilizer, anti-UV agent are proportioned according to the above weight percentage;

[0032] 2) Add the components weighed in step 1) into a low-speed mixing pot and mix thoroughly to obta...

Embodiment 2

[0037] The modified thermoplastic polyurethane elastomer is composed of the following raw materials in weight percentage: thermoplastic polyurethane elastomer (TPU) 80%; thermoplastic elastomer (TPE) 10%; filler 1%; lubricant 0.5%; antioxidant 0.5%; 7% compatibilizer; 1% anti-UV agent. Wherein, the thermoplastic elastomer (TPE) adopts a TPE with a hardness of 85A and a melting index of 50 g / 10 min at a melting temperature of 190° C. and a load of 5 kg. The compatibilizer adopts MAH graft with PP as the base material. The filler is talcum powder, and the lubricant is a combination of XH204 and XH208. The antioxidant uses 1076. The anti-UV agent adopts UV531.

[0038] Preparation:

[0039] 1) Proportioning thermoplastic polyurethane elastomer (TPU), thermoplastic elastomer (TPE), filler, lubricant, antioxidant, compatibilizer, and anti-UV agent according to the above weight percentage.

[0040] 2) Add the components weighed in step 1) into a low-speed mixing pot and mix tho...

Embodiment 3

[0045] The modified thermoplastic polyurethane elastomer is composed of the following raw materials in weight percentage: thermoplastic polyurethane elastomer (TPU) 65%; thermoplastic elastomer (TPE) 20%; filler 3%; lubricant 1.5%; antioxidant 1.5%; 7.5% compatibilizer; 1.5% anti-UV agent. Wherein, the thermoplastic elastomer (TPE) has a hardness of 80A and a melt index of 30 g / 10 min at a melting temperature of 190° C. under a load of 5 kg. The compatibilizer adopts MAH graft with PE as the base material, the filler adopts glass fiber, the lubricant adopts the combination of EBS, smooth agent 1751, and silicone powder, and the antioxidant adopts 1010 , 1076, and 1098, the anti-UV agent is a combination of UV326 and UV531.

[0046] Preparation:

[0047] 1) Proportioning thermoplastic polyurethane elastomer (TPU), thermoplastic elastomer (TPE), filler, lubricant, antioxidant, compatibilizer, and anti-UV agent according to the above weight percentage.

[0048] 2) Add the comp...

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Abstract

The invention relates to a modified thermoplastic polyurethane elastomer and a preparation method thereof. The elastomer is characterized by being prepared from, by weight, thermoplastic polyurethane elastomer (TPU) 50%-80%, thermoplastic elastomer (TPE) 10%-30%, filler 1%-5%; lubricant 0.5%-3%, antioxidant 0.5%-2%, compatilizer 7%-8% and UV-resistant agent 1%-2%, wherein the thermoplastic elastomer (TPE) is the TPE with the hardness of 75-85 A and the melt index of 20-50 g / 10 min at the melting temperature of 190 DEG C in the state of 5 kg load. The compatilizer is an MAH graft with SEBS, PP or PE as a base material. The problems of poor forming performance and poor weather resistance of an existing thermoplastic polyurethane elastomer (TPU) are solved, the forming performance is good, the liquidity and demolding performance of the product in the production process are ensured, the product quality is remarkably improved, and the production cost is obviously reduced.

Description

technical field [0001] The invention relates to a polyurethane elastomer, in particular to a modified thermoplastic polyurethane elastomer and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) has excellent elasticity, abrasion resistance, mechanical properties, oil resistance, water resistance, and mold resistance, and is widely used in daily necessities and production supplies, such as auto parts such as car storage boxes. But it also has the following defects: 1. During the processing of injection-molded TPU, due to the narrow melting temperature range of TPU, such as the existing TPU with a hardness of 85A, the processing temperature is about 180°C to 190°C, and the processing temperature is difficult to control. Therefore, the melt viscosity may be high or low. If the processing temperature is too high, the TPU has good fluidity, but the cooling time is long, and it is easy to stick to the mold, which makes demoulding...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L101/00C08L51/00C08L51/06C08K3/26C08K5/134C08K5/3475C08K13/02C08K3/34C08K5/132C08K13/04C08K7/14C08K5/20
CPCC08L75/04B29C48/92B29C2948/92704C08K2201/014C08L2201/08C08L2205/03C08L2205/035C08L101/00C08L51/006C08L23/06C08K2003/265C08K5/1345C08K5/3475C08L51/06C08K13/02C08K3/34C08K5/132C08K13/04C08K7/14C08K5/20
Inventor 于庆华张书林
Owner 锦州希尔达汽车零部件有限公司
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