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A kind of TPU film of high transparency and high thermal stability and preparation method thereof

A thin film and light transmittance technology, applied in the field of synthetic materials, can solve the problems of decreased transparency, weakened mechanical properties, yellowing, etc., and achieve the effect of easy yellowing, high transparency, and excellent mechanical properties

Active Publication Date: 2019-11-01
SUZHOU XIONGLIN NEW MATERIAL SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention improves the transparency and mechanical properties of the TPU film, but its transparency drops sharply when exposed to high temperature for a long time, the mechanical properties are also weakened, and yellowing occurs; therefore, a long-lasting high transparency, yellowing resistance and high thermal stability The TPU film is the focus of our research

Method used

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  • A kind of TPU film of high transparency and high thermal stability and preparation method thereof
  • A kind of TPU film of high transparency and high thermal stability and preparation method thereof
  • A kind of TPU film of high transparency and high thermal stability and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The present embodiment adopts following method to prepare TPU film:

[0036] (1) Raw materials and proportioning:

[0037]

[0038] (2) Preparation method:

[0039] ① Dry the components at 90°C for 8 hours according to the formula, and then mix them;

[0040] ②The mixed components are extruded through the extruder. The temperature of the solid conveying zone of the extruder is 260°C, the temperature of the material plasticizing zone is 180°C, and the temperature of the melt conveying zone is 320°C.

Embodiment 2

[0042] The present embodiment adopts following method to prepare TPU film:

[0043] (1) Raw materials and proportioning:

[0044]

[0045]

[0046] (2) Preparation method:

[0047] ① Dry the components at 110°C for 4 hours according to the formula, and then mix them;

[0048] ②The mixed components are extruded through the extruder. The temperature of the solid conveying zone of the extruder is 440°C, the temperature of the material plasticizing zone is 860°C, and the temperature of the melt conveying zone is 420°C.

Embodiment 3

[0050] The present embodiment adopts following method to prepare TPU film:

[0051]

[0052] (2) Preparation method:

[0053] ① Dry the components at 100°C for 6 hours according to the formula, and then mix them;

[0054] ②The mixed components are extruded through the extruder. The temperature of the solid conveying zone of the extruder is 350°C, the temperature of the material plasticizing zone is 520°C, and the temperature of the melt conveying zone is 370°C.

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Abstract

The invention relates to a high-transparency high-heat-stability TPU (thermoplastic polyurethane) film and a preparation method thereof. The TPU film is mainly prepared from the following raw materials in parts by weight: 12-18 parts of alicyclic diisocyanate, 7-13 parts of toluene diisocyanate, 35-55 parts of polyester polyol, 6-12 parts of chain extender, 0.2-0.8 part of defoaming agent, 2-4 parts of ultraviolet absorbent, 0.4-1.6 parts of anti-yellowing agent and 0.5-1.5 parts of polytetrafluoroethylene. The preparation method of the TPU film comprises the following steps: predrying the components according to the formula, mixing, and extruding by an extruder. The TPU film has the advantages of high transparency, excellent heat stability and excellent mechanical properties. The light transmittance is greater than 95%, and the yellowing resistance is Grade 5 above.

Description

technical field [0001] The invention relates to the technical field of synthetic materials, in particular to a TPU film and a preparation method thereof, in particular to a TPU film with high transparency and high thermal stability and a preparation method thereof. Background technique [0002] TPU (Thermoplastic polyyrethane, thermoplastic polyurethane) is a new type of organic polymer synthetic material with excellent performance; such as wear resistance and resilience are better than ordinary polyurethane and PVC, aging resistance is better than rubber, is an alternative The ideal material for PVC and PU is an internationally recognized new polymer material. [0003] Thermoplastic polyurethane has a wide range of uses, for example, it can be used in footwear, ready-made clothing, medicine, defense supplies, sporting goods and industrial supplies materials, as well as outer sheath materials for wires and cables, as well as mobile phone buttons, plastic inflatable toys, bed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/06C08L27/18C08L79/02C08K13/02C08K3/34C08K5/098C08K5/132C08K5/3445
Inventor 何建雄王一良
Owner SUZHOU XIONGLIN NEW MATERIAL SCI & TECH CO LTD
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