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A kind of surface non-adhesive matte soft TPU and preparation method thereof

A matte and soft technology, applied in the field of polymer materials, can solve the problems of reducing surface adhesion, frosting, migration and precipitation, etc.

Active Publication Date: 2021-01-08
ZHEJIANG HUAFENG THERMOPLASTIC POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The surface stickiness of matte soft TPU products restricts many downstream applications. Most of the existing solutions are to add a large amount of conventional external slip additives such as EBS, polyethylene wax, etc. during the production process to reduce the surface adhesion. But the disadvantage is that the surface of the product will lead to the migration and precipitation of EBS, polyethylene wax, etc. over time, that is, the phenomenon of frosting

Method used

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  • A kind of surface non-adhesive matte soft TPU and preparation method thereof
  • A kind of surface non-adhesive matte soft TPU and preparation method thereof
  • A kind of surface non-adhesive matte soft TPU and preparation method thereof

Examples

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preparation example Construction

[0048] The preparation method of the embodiment of the present invention is as follows:

[0049] Step 1: Weighing thermoplastic polyurethane elastomer TPU, matting agent, compatibilizer, antisticking agent and antioxidant according to parts by weight;

[0050] Step 2: premixing the above-mentioned raw materials to obtain a premix;

[0051] Step 3: Put the premix into the twin-screw extruder to melt and extrude;

[0052] Step 4: Cutting and granulating the extruded product to obtain a non-adhesive matte soft TPU on the surface.

[0053] The technological parameter of twin-screw extruder in described step 3 is as follows:

[0054] Screw speed: 300RPM

[0055] Main feeding rate: 200RPM

[0056] One section of screw temperature: 150±5℃

[0057] Two-section screw temperature: 160±5℃

[0058] Three-section to seven-section screw temperature: 170±5℃

[0059] Eight-section screw temperature: 175±5℃

[0060] Nine-section screw temperature: 175±5°C

[0061] Ten-section screw te...

Embodiment 1-3

[0068] The raw materials involved in Examples 1-3 are: the thermoplastic polyelastomer TPU is TPU manufactured by Huafon, the matting agent is Kraton SEBS1651, and the compatibilizer is hydrogenated styrene-butadiene-styrene block copolymer Grafted maleic anhydride polymer, grade Kraton 1901, antioxidant type Irganox 1010, anti-adhesive agent 2-trimethylsiloxy-4-allyloxydiphenyl ketone, methyl trimethyl A mixture of silyldimethylketene acetal, 2,3,3,3-tetrafluoro-1-propene, 2-acrylic acid-2-carboxyethyl ester.

[0069] in

Embodiment 1

[0070] In Example 1, 2-trimethylsilyloxy-4-allyloxydiphenylketone, methyltrimethylsilyldimethylketene acetal, 2,3,3,3-tetrafluoro -1-propylene, 2-acrylic acid-2-carboxyethyl ester mass ratio is 1:1.2:2:0.8; thermoplastic polyelastomer TPU is Huafeng TPU HF-S1065APU-1;

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Abstract

The invention discloses matt soft TPU (thermoplastic polyurethane) with an anti-adhesion surface. The matt soft TPU is prepared from components in parts by weight as follows: 60-80 parts of a TPU elastomer, 5-20 parts of a matting agent, 5-10 parts of a compatilizer, 5-10 parts of an anti-adhesion agent and 0.5-1 part of an antioxidant. The key technology lies in that the anti-adhesion agent is used to successfully solve the problem of adhesion of surfaces of matt soft TPU products, and later migration and precipitation, namely, frosting of EBS and polyethylene wax, due to the fact that external lubricating aids such as EBS and polyethylene wax are used conventionally to prevent adhesion of surfaces of soft TPU products are avoided.

Description

technical field [0001] The invention relates to polymer materials, and more specifically relates to a non-adhesive matte soft TPU on the surface. Background technique [0002] In the prior art, TPU is mainly divided into hard and soft. Soft TPU has a hardness ranging from 35A to 70A. It is composed of a soft segment phase and a hard phase. Microphase separation occurs due to the thermodynamic incompatibility of the two phases. , downstream can be used for extrusion, injection molding, blow molding, casting. Due to its unique touch and surface effect, matte soft TPU has been applied in many fields, such as non-slip soles, toys, pet products, etc. However, the technical difficulties in the development of matte soft TPU are mainly divided into two aspects: one is Compatibility and surface tackiness of the article. [0003] The surface stickiness of matte soft TPU products restricts many downstream applications. Most of the existing solutions are to add a large amount of conve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08L53/02C08L51/00C08K5/134C08K5/5419C08K5/02C08K5/10C08K5/00
CPCC08L75/04C08L2205/03C08L53/02C08L51/006C08K5/1345C08K5/5419C08K5/02C08K5/10C08K5/00
Inventor 马肥陈斌杨鹏洲施龙敏袁仁能陈光静李俊江范东风
Owner ZHEJIANG HUAFENG THERMOPLASTIC POLYURETHANE
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