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Anti-aging TPU film and processing technology thereof

A processing technology, anti-aging technology, applied in the field of TPU film, can solve the problem of lack of dynamic, mechanical properties, anti-ultraviolet aging performance, heat resistance can not meet our needs, color products are rigid and other problems

Active Publication Date: 2022-07-01
南通纳科达聚氨酯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] TPU color-changing films generally add various color masterbatches to TPU plastics to achieve TPU color changes, but the mechanical properties, anti-ultraviolet aging properties, and heat resistance of today's TPU color-changing films cannot meet our needs. Practical application brings inconvenience. At the same time, today’s TPU color changing film has no dynamic sense because of the same color everywhere, and the observation color is consistent from all angles, making the color product look rigid.

Method used

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  • Anti-aging TPU film and processing technology thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A processing technology of anti-aging TPU film, comprising the following steps:

[0039] (1) Mix quaternary ammonium modified lignin, sodium hydroxide and deionized water, stir for 20 minutes, add zinc acetate solution, stir evenly, heat up to 80°C, keep heat for 5h, adjust pH to 7.8 after cooling, and collect by centrifugation , washed and dried to obtain a lignin-zinc oxide complex. The concentration of the zinc acetate solution is 20g / L, the mass ratio of the quaternized modified lignin to the zinc acetate solution is 1:2; the mass ratio of the quaternized modified lignin to the sodium hydroxide is 1:2;

[0040] Take the lignin-zinc oxide complex, sodium hydroxide (pH is 10.5), and deionized water, mix, stir for 15 minutes, add a mixed solution of chloroacetic acid and sodium hydroxide at 60 ° C, heat preservation for 2 hours, and collect material A; The mass ratio of lignin-zinc oxide complex to chloroacetic acid is 2:1; take material A, thionyl chloride and pyridi...

Embodiment 2

[0048] A processing technology of anti-aging TPU film, comprising the following steps:

[0049] (1) Mix the quaternary ammonium modified lignin, sodium hydroxide and deionized water, stir for 25 minutes, add zinc acetate solution, stir evenly, heat up to 82°C, keep heat for 4.5h, adjust pH to 7.8 after cooling, centrifuge Collect, wash and dry to obtain lignin-zinc oxide complex. The concentration of the zinc acetate solution is 20g / L, the mass ratio of the quaternized modified lignin to the zinc acetate solution is 1:2; the mass ratio of the quaternized modified lignin to the sodium hydroxide is 1:2;

[0050] Take the lignin-zinc oxide complex, sodium hydroxide (pH is 10.5), and deionized water, mix, stir for 18 minutes, add a mixed solution of chloroacetic acid and sodium hydroxide at 62 ° C, and keep heat for 1.5 hours, and collect material A; The mass ratio of the lignin-zinc oxide complex to chloroacetic acid is 2:1; material A, thionyl chloride and pyridine are taken an...

Embodiment 3

[0058] A processing technology of anti-aging TPU film, comprising the following steps:

[0059] (1) Mix the quaternized modified lignin, sodium hydroxide, and deionized water, stir for 30 minutes, add zinc acetate solution, stir evenly, heat up to 85 °C, keep heat for 4 hours, adjust the pH to 7.8 after cooling, and collect by centrifugation , washed and dried to obtain a lignin-zinc oxide complex. The concentration of the zinc acetate solution is 20g / L, the mass ratio of the quaternized modified lignin to the zinc acetate solution is 1:2; the mass ratio of the quaternized modified lignin to the sodium hydroxide is 1:2;

[0060] Take the lignin-zinc oxide complex, sodium hydroxide (pH is 10.5), and deionized water, mix, stir for 20 minutes, add a mixed solution of chloroacetic acid and sodium hydroxide at 65 ° C, heat preservation for 1 hour, and collect material A; The mass ratio of lignin-zinc oxide complex and chloroacetic acid is 2:1; take material A, thionyl chloride and...

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Abstract

The invention discloses an anti-aging TPU (thermoplastic polyurethane) film and a processing technology thereof, during preparation, components such as a thermoplastic polyurethane elastomer, organic silicon resin, a modified lignin-zinc oxide compound, modified cerium dioxide, color master batch, an antioxidant and the like are used as raw materials, and a color changing film is prepared through melt extrusion and blow molding film forming; according to the scheme, the base film and the outer layer film are prepared, color master batches with different colors are added into the base film and the outer layer film during preparation, multiple layers of TPU with different colors are overlapped in actual operation, and different visual effects, color differences or metal effects, cloud and mist effects, flickering effects or colorless effects can be set for each layer of TPU film; therefore, the prepared color-changing film can be endowed with a dynamically changing visual sense and is more excellent and attractive. According to the scheme, the process design is reasonable, the prepared color-changing film has excellent mechanical properties, and the TPU color-changing film is colored, excellent in ultraviolet aging resistance, excellent in high-temperature stability and high in practicability.

Description

technical field [0001] The invention relates to the technical field of TPU films, in particular to an anti-aging TPU film and a processing technology thereof. Background technique [0002] TPU (Thermoplastic polyurethanes), thermoplastic TPU elastomer, TPU film is a film made of special processes such as calendering, casting, film blowing, and coating on the basis of TPU pellets; now TPU film is widely used, TPU color-changing film is a relatively common type. There are various TPU color-changing films on the market, which can be purchased according to needs and attached to the items that people want to change the color of to make it meet their individual needs. [0003] TPU color-changing films generally add various color masterbatches into TPU plastics to achieve TPU color changes, but the mechanical properties, anti-ultraviolet aging properties, and heat-resistant properties of today's TPU color-changing films cannot meet our needs. The practical application brings incon...

Claims

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Application Information

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IPC IPC(8): B32B27/40B32B27/06B32B7/12C08L75/04C08L83/04C08L97/00C08K3/22C08K9/02
CPCB32B27/40B32B27/08B32B7/12C08L75/04C08K2003/2213C08K2003/2296C08L2207/04C08L83/04C08L97/005C08K3/22C08K9/02
Inventor 肖琳林欲金叶航
Owner 南通纳科达聚氨酯科技有限公司