Preparation method of thermoplastic polyurethane film

A polyurethane film, thermoplastic technology, applied in the field of preparation of thermoplastic polyurethane film, can solve the problems of poor impact resistance, short service life, large friction coefficient, etc.

Pending Publication Date: 2021-04-27
揭西鑫昌顺电子科技有限公司
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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 preparation method of thermoplastic polyurethane film to solve the problems of poor imp

Method used

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  • Preparation method of thermoplastic polyurethane film
  • Preparation method of thermoplastic polyurethane film

Examples

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Embodiment 1

[0023] A preparation method of a thermoplastic polyurethane film, comprising the following raw materials in parts by weight: 230 parts of polyurethane, 90 parts of dimethylformamide, 15 parts of antioxidant, 13 parts of ultraviolet absorber, 18 parts of antibacterial Agent, 8 parts of lubricants and 25 parts of fillers, its preparation method specifically comprises the steps:

[0024] S1: Weigh each raw material by weight;

[0025] S2: Put all the raw material components weighed in step S1 into a high-speed kneader for blending and kneading, then take them out and put them into a twin-screw extruder for melt extrusion onto the die, and pass through the die Lay on two or more highly polished chill rolls for cooling;

[0026] S3: Transfer to the nip roller through the double guide rollers for flattening, and then convey to the two driving rollers for compaction and trimming, and then clamp by the double nip rollers, which is most suitable for forming thermoplastics through the ...

Embodiment 2

[0031] A preparation method of a thermoplastic polyurethane film, comprising the following raw materials in parts by weight: 200 parts of polyurethane, 80 parts of dimethylformamide, 10 parts of antioxidant, 10 parts of ultraviolet absorber, 15 parts of antibacterial Agent, 5 parts of lubricants and 20 parts of fillers, its preparation method specifically comprises the steps:

[0032] S1: Weigh each raw material by weight;

[0033] S2: Put all the raw material components weighed in step S1 into a high-speed kneader for blending and kneading, then take them out and put them into a twin-screw extruder for melt extrusion onto the die, and pass through the die Lay on two or more highly polished chill rolls for cooling;

[0034] S3: Transfer to the nip roller through the double guide rollers for flattening, and then convey to the two driving rollers for compaction and trimming, and then clamp by the double nip rollers, which is most suitable for forming thermoplastics through the ...

Embodiment 3

[0039] A preparation method of a thermoplastic polyurethane film, comprising the following raw materials in parts by weight: 250 parts of polyurethane, 100 parts of dimethylformamide, 15 parts of antioxidant, 15 parts of ultraviolet absorber, 20 parts of antibacterial Agent, 10 parts of lubricant and 30 parts of filler, its preparation method specifically comprises the steps:

[0040] S1: Weigh each raw material by weight;

[0041] S2: Put all the raw material components weighed in step S1 into a high-speed kneader for blending and kneading, then take them out and put them into a twin-screw extruder for melt extrusion onto the die, and pass through the die Lay on two or more highly polished chill rolls for cooling;

[0042] S3: Transfer to the nip roller through the double guide rollers for flattening, and then convey to the two driving rollers for compaction and trimming, and then clamp by the double nip rollers, which is most suitable for forming thermoplastics through the ...

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Abstract

The invention relates to the technical field of protective films, in particular to a preparation method of a thermoplastic polyurethane film, which comprises the following raw materials: polyurethane, dimethylformamide, an antioxidant, an ultraviolet light absorber, an antibacterial agent, a lubricant and a filler. Polyurethane and dimethylformamide are adopted as main materials to improve polyurethane material molecules so as to achieve a strong stretching effect, a slit trial extrusion type coating high-temperature baking thermosetting mode is adopted in the preparation process, products with different hardness can be obtained by changing the proportion of all reaction components of polyurethane, along with the increase of the hardness, the product still maintains good elasticity and wear resistance, the bearing capacity, impact resistance and shock absorption performance of a polyurethane product are outstanding, the glass transition temperature of polyurethane is relatively low, and good elasticity, flexibility and other physical properties are still maintained at the temperature of -35 DEG C.

Description

technical field [0001] The invention relates to the technical field of protective films, in particular to a preparation method of a thermoplastic polyurethane film. Background technique [0002] TPU film is a thermoplastic polyurethane film, and it is also an environmentally friendly polymer. It has the characteristics of non-toxic, wear-resistant and so on. TPU film is widely used in the production of greenhouses, mobile phone screen protective film, car protective film and other fields. At present, the stretch rate of TPU film material for car protective film on the market is 50%, which will easily cause operational troubles when terminal use is It is not easy to extend, and it is not suitable for large arcs and special places. Contents of the invention [0003] The object of the present invention is to provide a preparation method of a thermoplastic polyurethane film to solve the problems of poor impact resistance, short service life and large friction coefficient...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L5/08C08L83/04C08K13/02C08K5/20C08K5/134C08K3/26C08K3/34C08K5/526C08J5/18B29D7/01
CPCC08J5/18B29D7/01C08J2375/04C08J2405/08C08J2483/04C08K13/02C08K5/20C08K5/1345C08K2003/265C08K3/346C08K5/526
Inventor 蔡超凡
Owner 揭西鑫昌顺电子科技有限公司
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