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Colorful TPU (thermoplastic polyurethane) foaming material, method for preparing shoe material by colorful TPU foaming material and application

A foaming material and foaming sheet technology, which is applied in the field of colored TPU foaming materials, the preparation of shoe materials and applications using colored TPU foaming materials, can solve the problems affecting the use of thermoplastic elastomer foaming materials and the skin of foaming materials. Problems such as wrinkling and increasing the density of thermoplastic elastomer foam materials

Active Publication Date: 2015-01-07
JINJIANG GUOSHENG SHOE MATERIAL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The occurrence of such severe shrinkage will not only significantly increase the density of the thermoplastic elastomer foamed material, but also lead to obvious wrinkles on the skin of the foamed material and the instability of the overall size of the foamed material, which seriously affects the subsequent production of the thermoplastic elastomer foamed material. use

Method used

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  • Colorful TPU (thermoplastic polyurethane) foaming material, method for preparing shoe material by colorful TPU foaming material and application
  • Colorful TPU (thermoplastic polyurethane) foaming material, method for preparing shoe material by colorful TPU foaming material and application
  • Colorful TPU (thermoplastic polyurethane) foaming material, method for preparing shoe material by colorful TPU foaming material and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] Dry-mix TPU particles (produced by Ningbo Jinsui Company) with 1wt% yellow organic pigment (Permanent Yellow HR), extrude through an extruder, and granulate under water to make an ellipse with a diameter of 2mm and an aspect ratio of 1.5. Spherical TPU particles. Pellets were placed in an autoclave using low temperature, high pressure CO 2 Fluid impregnated TPU particles to make high pressure CO 2 The fluid reaches a dissolution equilibrium in the TPU resin particles. Put the impregnated TPU particles into a water bath or water vapor for foaming to obtain yellow TPU foamed particles B1. Put the expanded TPU particles B1 into room temperature and high-pressure air under pressure to obtain the expanded TPU particles B2 in yellow color. Table 1 is the relevant process parameters in Example 1. Studies have shown that the obtained yellow TPU expanded particles have a density of 0.18g / cm 3 , the hardness is Shao A15. Such as figure 1 As shown, the obtained yellow TPU e...

Embodiment 2

[0101] Except changing the source of TPU resin (purchased from Ningbo Jinsui, Yantai Wanhua, American Dow Chemical Company, German Bayer Company), granulation size and operating process conditions, other operations are the same as in Example 1. The obtained TPU expanded particle materials are all yellow TPU expanded particle materials with smooth surface and no obvious shrinkage. The incision foamed particles can observe the uniform pigment distribution inside and outside the colored TPU foamed particles. See Table 1 for specific data.

Embodiment 3

[0103] Except that changing the content of the yellow organic pigment is 0.1, 0.5, 1, 2, 5wt%, other operations are the same as in Example 1. The obtained TPU foamed materials are all yellow TPU foamed particle materials with smooth surface and no obvious shrinkage. The incision foamed particles can observe the uniform pigment distribution inside and outside the colored TPU foamed particles. See Table 2 for specific data.

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Abstract

The invention discloses a colorful TPU (thermoplastic polyurethane) foaming material, a preparation method and an application. The colorful TPU foaming material comprises colorful foaming particles or colorful foaming sheets, pigment concentration of the colorful foaming particles or the colorful foaming sheets is 0.01%-5% by weight, pigments inside and outside the colorful TPU foaming material have the same concentration, the hardness of the colorful TPU foaming material is HA 5-65, the density is 0.05-0.5 g / cm<3>, and the average cell size is smaller than 100 mu m. The colorful TPU foaming material has the characteristics of good inside and outside uniformity, absence of wrinkles on the surface and the like.

Description

[0001] The patent application of the present invention is a divisional application of Chinese patent application number 201410196699.3. The application number of the original application is 201410196699.3, and the application date is May 09, 2014. The invention name is color TPU foam material, preparation method, use and utilization of the material Method for preparing molded body, sheet, shoe material. technical field [0002] The invention relates to a method for preparing a low-density colored thermoplastic polyurethane (TPU) foaming material by physical foaming of a high-pressure fluid. The colored TPU resin impregnated by a low-temperature, high-pressure fluid is heated for a short time to reduce the interface migration of organic small molecule pigments, thereby Obtain a colored TPU foam material in which the pigment is evenly dispersed inside and outside the cell structure, and a high-pressure gas-carrying process to reduce the pressure difference inside and outside the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K3/04C08K3/22C08J9/12A43B1/14
Inventor 翟文涛张小海
Owner JINJIANG GUOSHENG SHOE MATERIAL LTD
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