High-elastic TPU thin film and preparation method thereof

A film and high-elastic technology, applied in the field of high-elastic TPU film and its preparation, can solve the problems of TPU performance degradation, poor TPU hydrolysis resistance, low-density TPU foam beads, etc., to improve structural properties, easy blending and dispersion , excellent elastic effect

Inactive Publication Date: 2019-03-01
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

[0007] Disclosed in CN103408922A and CN102276785A TPU foaming material preparation process, take TPU as matrix, obtain TPU foaming material by adding auxiliary agents such as chemical foaming agent, crosslinking agent and auxiliary crosslinking agent, foaming process is similar to EVA foaming , there are also problems of cross-linking and environmental protection. In addition, the use of chemical blowing agents will make the cell structure inhomogeneous, and incompletely decomposed chemical blowing agents are harmful to the human body and material properties; WO2010136398A1 uses CO 2 , N 2 The inert gas is used as the foaming agent, and the low-density TPU foamed beads are obtained by the suspension method
And this method also has the fo

Method used

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  • High-elastic TPU thin film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A kind of preparation method of high elasticity TPU film, it comprises the following steps:

[0050] (1) Preparation of TPU particles:

[0051] Step 1: Premix the thermoplastic polyurethane elastomer, melt viscosity regulator, filler and anti-aging agent in the high-speed mixer according to the ratio of 100:15:12, mix them evenly and put them into the extruder for melting and kneading, water Down cutting pelletizes to obtain thermoplastic polyurethane blended particles;

[0052] The thermoplastic polyurethane elastomer is a mixture of polyester type and polyether type, and the proportion of the two is 20:50; the density of the polyester type or polyether type thermoplastic polyurethane elastomer is 1.2g / cm 3 , the hardness is Shore A 70; the melt viscosity modifier is a mixture of ethylene-vinyl acetate copolymer and acrylonitrile-butadiene-styrene copolymer, and the ratio of the two is 1:10; the filler is calcium carbonate;

[0053] The second step: add the thermopl...

Embodiment 2

[0060] A kind of preparation method of high elasticity TPU film, it comprises the following steps:

[0061] (1) Preparation of TPU particles:

[0062] Step 1: Premix the thermoplastic polyurethane elastomer, melt viscosity regulator, filler and anti-aging agent in a high-speed mixer according to the ratio of 100:5:2, and put it into the extruder to melt and knead after mixing evenly. Down cutting pelletizes to obtain thermoplastic polyurethane blended particles;

[0063] The thermoplastic polyurethane elastomer is a mixture of polyester type and polyether type, and the proportion of the two is 30:70; the density of the polyester type or polyether type thermoplastic polyurethane elastomer is 1.1g / cm 3 , the hardness is Shore A 80; the melt viscosity modifier is a mixture of ethylene-vinyl acetate copolymer and acrylonitrile-butadiene-styrene copolymer, and the proportion of the two is 5:20; the filler is calcium carbonate;

[0064]The second step: add the thermoplastic polyu...

Embodiment 3

[0071] A kind of preparation method of high elasticity TPU film, it comprises the following steps:

[0072] (1) Preparation of TPU particles:

[0073] Step 1: Premix the thermoplastic polyurethane elastomer, melt viscosity regulator, filler and anti-aging agent in a high-speed mixer according to the ratio of 100:5:5, mix them evenly and put them into the extruder for melting and kneading, water Down cutting pelletizes to obtain thermoplastic polyurethane blended particles;

[0074] Described thermoplastic polyurethane elastomer is polyester type; The density of described polyester type or polyether type thermoplastic polyurethane elastomer is 1.0g / cm 3 , the hardness is Shore A 60; the melt viscosity modifier is a mixture of ethylene-vinyl acetate copolymer and acrylonitrile-butadiene-styrene copolymer, and the proportion of the two is 3:20; the filler is calcium carbonate;

[0075] The second step: add the thermoplastic polyurethane blend particles obtained in the above st...

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Abstract

The invention relates to a high-elastic TPU thin film and a preparation method thereof. The method includes: according to ratio, performing three-stage mixing on prepared TPU granules, foamed siliconemaster batches, and modified nano-SiO2 master batches; feeding the mixture to a casting machine through an automatic conveying system; and extruding the mixture to form the thin film. The TPU thin film is high in elasticity and can be widely applied to the fields, such as: damping materials, packaging and toys, children's toys, sports equipment, aero-models, heat insulation materials, and automobile trim materials, etc.

Description

technical field [0001] The invention relates to the technical field of thermoplastic polyurethane elastomers, in particular to a high-elastic TPU film and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) is a kind of heat-plasticized and soluble polyurethane material, which has a unique structure of soft and hard block copolymers. It is widely used because it has both the elasticity of rubber and the processability of plastic It is used in many fields, such as: exterior parts of automobile body, cable sheath, adhesive tape, ski boots, gear, rubber hose, clothing fabric, inflatable products, etc. [0003] Usually, different application fields have higher requirements for TPU materials in certain aspects, such as: clothing and shoe materials require TPU fabrics to have better waterproof and moisture permeability, mechanical equipment requires TPU products to have higher mechanical strength, and inflatable products ( Such a...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08L75/06C08L83/04C08L23/08C08L55/02C08L23/06C08L23/12C08K13/06C08K3/36C08J3/22C08J5/18C08J9/10C08J9/16
CPCC08J3/226C08J5/18C08J9/0061C08J9/103C08J9/105C08J9/16C08J2203/04C08J2375/08C08J2423/06C08J2423/08C08J2423/12C08J2455/02C08J2475/06C08J2483/04C08K3/36C08K13/06C08K2201/011
Inventor 何建雄王一良
Owner SUZHOU XIONGLIN NEW MATERIAL SCI & TECH CO LTD
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