High-transparency polyether type double-mirror TPU (thermoplastic polyurethane) thin film

A polyether-type, double-mirror technology, applied in the field of materials, can solve the problems of low pass rate, uneven film thickness, and low transparency of high-transparency polyether-type double-mirror TPU films, and achieve poor transparency, uniform thickness, and surface high gloss effect

Active Publication Date: 2017-09-08
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the traditional production process of high-transparency polyether-type double-mirror TPU film is mainly direct casting, and the mirror roll is cooled and formed. This process has low production capacity, is easy to stick to the roll, and the film thickness is not uniform. Head lines and other abnormalities lead to low pass rate of highly transparent polyether double-mirror TPU film

Method used

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  • High-transparency polyether type double-mirror TPU (thermoplastic polyurethane) thin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The highly transparent polyether type double-mirror TPU film is prepared according to the following formula proportions, requirements of each component and process method.

[0026] TPU resin: 100 parts;

[0027] Antioxidant: 0.1 part;

[0028] Light stabilizer: 1.8 parts;

[0029] Processing lubricant: 0.01 parts.

[0030] The TPU resin is a polyether-type thermoplastic polyurethane elastomer, the molecular weight of the soft segment PTMEG used in its synthesis is 1100-1200, the hydroxyl value is 110-115 (mg KOH / g), the Shore hardness is 80A-95A, and the weight-average molecular weight is 100,000~110,000, the molecular weight distribution is 2.0~2.5;

[0031] The antioxidant is triethylene glycol bis-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate] (antioxidant 245) and 1,3,5-tri (4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl) 1,3,5-triazine-2,4,6-(1H,3H,5H)-trione (antioxidant 1790) a compound system mixed at a mass ratio of 1:1.2;

[0032] The light stabilizer ...

Embodiment 2

[0039] The highly transparent polyether type double-mirror TPU film is prepared according to the following formula proportions, requirements of each component and process method.

[0040] TPU resin: 100 parts;

[0041] Antioxidant: 0.5 parts;

[0042] Light stabilizer: 0.5 parts;

[0043] Processing lubricant: 0.03 parts.

[0044] The TPU resin is a polyether-type thermoplastic polyurethane elastomer, the molecular weight of the soft segment PTMEG used in its synthesis is 1100-1200, the hydroxyl value is 110-115 (mg KOH / g), the Shore hardness is 80A-95A, and the weight-average molecular weight is 100,000~110,000, the molecular weight distribution is 2.0~2.5;

[0045] The antioxidant is triethylene glycol bis-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate] (antioxidant 245) and 1,3,5-tri (4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl) 1,3,5-triazine-2,4,6-(1H,3H,5H)-trione (antioxidant 1790) a compound system mixed at a mass ratio of 1:1.2;

[0046] The light stabilizer...

Embodiment 3

[0053] The highly transparent polyether type double-mirror TPU film is prepared according to the following formula proportions, requirements of each component and process method.

[0054] TPU resin: 100 parts;

[0055] Antioxidant: 0.8 parts;

[0056] Light stabilizer: 0.1 part;

[0057] Processing lubricant: 0.05 parts.

[0058] The TPU resin is a polyether-type thermoplastic polyurethane elastomer, the molecular weight of the soft segment PTMEG used in its synthesis is 1100-1200, the hydroxyl value is 110-115 (mg KOH / g), the Shore hardness is 80A-95A, and the weight-average molecular weight is 100,000~110,000, the molecular weight distribution is 2.0~2.5;

[0059] The antioxidant is triethylene glycol bis-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate] (antioxidant 245) and 1,3,5-tri (4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl) 1,3,5-triazine-2,4,6-(1H,3H,5H)-trione (antioxidant 1790) a compound system mixed at a mass ratio of 1:1.2;

[0060] The light stabilizer ...

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Abstract

The invention belongs to the technical field of materials, and particularly relates to a high-transparency polyether type double-mirror TPU (thermoplastic polyurethane) thin film and a preparation method for the same. The TPU thin film is prepared from the following components in parts by weight: 100 parts of TPU resin, 0.1 to 0.8 part of antioxidant, 0.1 to 1.8 part of light stabilizer and 0.01 to 0.05 part of processing lubricant. The preparation method comprises the following steps: adding each component into a stirring machine for uniform mixing according to the using amounts in the formula, then pumping the components into a dehumidification dryer for drying, and then performing extrusion casting, mirror counter-compression, cooling, shearing and compression winding to obtain a high-transparency polyether thin film product. The process difficulties of poor transparency, plasticization non-uniformity, high fisheye formation rate and high roller sticking rate are overcome, the productivity is improved, and the high-transparency polyether type double-mirror TPU thin film prepared by the invention has the characteristics of uniform thickness, high transparency, high surface glossiness, yellowing resistance and the like.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a highly transparent polyether type double-mirror TPU film and a preparation method thereof. Background technique [0002] TPU (Thermoplastic polyurethane, thermoplastic polyurethane) is a new type of organic polymer synthetic material, which belongs to chemical compounds. Its English trade name is: Flexible polyurethane. For example, it has excellent physical properties, such as wear resistance and resilience, which are better than ordinary polyurethane and PVC, and aging resistance is better than rubber. It can be said to be the most ideal material to replace PVC and PU. It is called a new polymer material internationally. . TPU can be divided into polyester type and polyether type according to molecular structure, and can be divided into injection molding grade, extrusion grade and blow molding grade according to processing methods [0003] Wait. Compared with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L91/06C08K5/00C08K5/3475C08K5/134C08K5/3492
CPCC08J5/18C08J2375/08C08J2491/06C08K2201/014C08L75/08C08L2201/10C08L2203/16C08L2205/025C08L2205/03C08L91/06C08K5/00C08K5/3475C08K5/1345C08K5/3492
Inventor 郑玉婴邓中文
Owner FUZHOU UNIV
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