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High-flatness thermoplastic polyurethane foam product as well as preparation method and application thereof

A thermoplastic polyurethane and flatness technology, which is applied in the field of thermoplastic polyurethane foam products and their preparation, can solve the problems of limited application prospects, single appearance types of products, and inability to carry out diversified appearance designs, so as to achieve the effect of improving quality and quality

Pending Publication Date: 2021-06-11
MIRACLL CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the ETPU molded products currently on the market only melt and bond the surface of each ETPU bead through the process of steam heating and forming. The surface of the obtained ETPU molded product has a strong bead feel, showing an uneven surface. , this phenomenon makes the surface of ETPU molded products unable to carry out diversified appearance designs, and the appearance of products is relatively single, thus limiting its wider application prospects

Method used

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  • High-flatness thermoplastic polyurethane foam product as well as preparation method and application thereof
  • High-flatness thermoplastic polyurethane foam product as well as preparation method and application thereof
  • High-flatness thermoplastic polyurethane foam product as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The preparation method of the thermoplastic polyurethane elastomer used for the high flatness foamed bead product of the present embodiment comprises the following steps:

[0051] a, 1 weight part of polytetramethylene ether with an average molar number of 1000g / mol, 0.38 weight part of hydrogenated diphenylmethane diisocyanate (HMDI), 0.043 weight part of 1,4 butanediol, 0.005 weight part The stannous dilaurate and the antioxidant 1010 of 0.01 weight part are transported to pouring system by gear pump and mix homogeneously, obtain mixture;

[0052] b. pouring the mixture in step a into a twin-screw extruder for continuous reaction synthesis to obtain a thermoplastic polyurethane elastomer. The temperature of each zone of the extruder is: 150°C for zone 1 and zone 2; 170°C for zone 3, zone 4 and zone 5; 180°C for zone 6, zone 7 and zone 8; The temperature is 200°C, the head temperature is 205°C, and the screw speed is 200rpm.

[0053] The obtained thermoplastic polyur...

Embodiment 2

[0057] The preparation method of the thermoplastic polyurethane elastomer used for the high flatness foamed bead product of the present embodiment comprises the following steps:

[0058] a, the polybutylene adipate of the average molar number 3000g / mol of 1 weight part, the isophorone diisocyanate (IPDI) of 0.24 weight part, the 1,6 hexanediol of 0.09 weight part, 0.004 weight part Parts of dibutyltin diacetate and 0.005 parts by weight of talcum powder are transported to the pouring system by a gear pump and mixed uniformly to obtain a mixture;

[0059] b. pouring the mixture in step a into a twin-screw extruder for continuous reaction synthesis to obtain a thermoplastic polyurethane elastomer. The temperature of each zone of the extruder is: 150°C for zone 1 and zone 2; 160°C for zone 3, zone 4 and zone 5; 170°C for zone 6, zone 7 and zone 8; The temperature is 180°C, the head temperature is 185°C, and the screw speed is 300rpm.

[0060] The obtained thermoplastic polyuret...

Embodiment 3

[0064] The preparation method of the thermoplastic polyurethane elastomer used for the high flatness foamed bead product of the present embodiment comprises the following steps:

[0065] a, 1 weight part of polytetramethylene ether with an average molar number of 1500g / mol, 0.34 weight part of hexamethylene diisocyanate (HDI), 0.12 weight part of 1,4 butanediol, 0.002 weight part of The antioxidant 1098 of triethylamine and 0.01 weight part is transported to pouring system by gear pump and mixes evenly, obtains mixture;

[0066] b. pouring the mixture in step a into a twin-screw extruder for continuous reaction synthesis to obtain a thermoplastic polyurethane elastomer. The temperature of each zone of the extruder is: 150°C for zone 1 and zone 2; 180°C for zone 3, zone 4 and zone 5; 185°C for zone 6, zone 7 and zone 8; is 200°C, head temperature is 205°C, screw speed is 250rpm,

[0067] The obtained thermoplastic polyurethane elastomer was cooled and pelletized to obtain the...

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Abstract

The invention discloses a high-flatness thermoplastic polyurethane foam product as well as a preparation method and application thereof. The preparation method comprises the following steps of foaming aliphatic thermoplastic polyurethane elastomer beads with the melting range of 20-50 DEG C and the melting point of 90-160 DEG C through physical gas to obtain foamed aliphatic thermoplastic polyurethane elastomer beads, and then welding the foamed aliphatic thermoplastic polyurethane elastomer beads in a heat source heating mode to prepare the polyurethane elastomer. The density of the high-flatness thermoplastic polyurethane foam product is 0.08-0.8 g / cm<3>, and the flatness value of a fixed-length ruler method is less than 2 mm. The thermoplastic polyurethane foam product not only has higher flatness, further enables the surface of the product to have more diversified design, but also has high rebound resilience.

Description

technical field [0001] The invention belongs to the field of foaming polymer materials, and in particular relates to a thermoplastic polyurethane foam product with high flatness and its preparation method and application. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) has the advantages of wide hardness range, excellent wear resistance, mechanical strength, water resistance, oil resistance, chemical corrosion resistance, mold resistance and environmental friendliness. In addition to retaining the excellent properties of the TPU matrix material, the foamed thermoplastic polyurethane elastomer material also has a series of advantages such as low density, heat insulation, high specific strength, high elasticity and cushioning, so it is widely used in packaging, industry, agriculture, transportation, etc. Industry, military industry, aerospace industry and daily necessities and other fields have broad application prospects. [0003] Thermoplastic polyu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L75/06C08J9/12C08J9/18C08J9/228C08G18/66C08G18/48C08G18/32C08G18/42
CPCC08J9/122C08J9/18C08J9/228C08G18/6674C08G18/4854C08G18/3206C08G18/664C08G18/4238C08J2203/06C08J2375/08C08J2375/06C08J9/16C08G18/246C08G18/758C08G18/0895C08G18/755C08G18/73C08G18/18C08G2110/0033C08G2110/0066C08G2110/0058C08J2201/03C08J2375/04C08J9/232C08J9/141C08J2203/14C08G18/12C08G18/14C08G18/244C08G2101/00C08G2380/00C08G2410/00C08J2201/032
Inventor 宋红玮杨冲冲王光阜任光雷刘建文
Owner MIRACLL CHEM
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