Preparation method for anti-ultraviolet heatproof BOPET film

An anti-ultraviolet and film technology, applied in the direction of flat products, other household appliances, household appliances, etc., can solve the problems of anti-ultraviolet activity and poor heat resistance, achieve good anti-ultraviolet and heat insulation performance, low commercial price, ultraviolet The effect of absorption characteristic peak enhancement

Active Publication Date: 2014-01-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem of poor anti-ultraviolet activity and poor heat resistance of the existing BOPET film, and provides a preparation method of an anti-ultraviolet and heat-resistant BOPET film

Method used

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  • Preparation method for anti-ultraviolet heatproof BOPET film

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specific Embodiment approach 1

[0013] Specific embodiment one: the preparation method of the anti-ultraviolet, heat-resistant BOPET film of the present embodiment is specifically carried out according to the following steps:

[0014] 1. Take 0.2g of silane coupling agent and disperse it in 100-150g of deionized water, adjust the pH value to 3-4 with nitric acid, then add 10g of sericite, and stir magnetically for 20-30min to obtain a sericite solution;

[0015] 2. Take 10-15g of tetrabutyl titanate and disperse it in 90-100g of absolute ethanol, and stir it magnetically for 30-40min to obtain the ethanol dispersion of tetrabutyl titanate, then add 10-15g of deionized water, 50-60g of absolute ethanol and 10-12g of nitric acid solution, magnetically stirred for 30 minutes to obtain a mixed solution, and then added the mixed solution dropwise to the sericite solution, at 50-60°C, 500-800r / min with magnetic force Stir for 5-6 hours to obtain a titanium dioxide / sericite solution, which is the coating solution; ...

specific Embodiment approach 2

[0018] Embodiment 2: This embodiment is different from Embodiment 1 in that the model of the silane coupling agent in step 1 is KH-550. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0019] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the particle size of sericite in step 1 is 100-500 nm. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

A preparation method for an anti-ultraviolet heatproof BOPET film relates to a preparation method for a BOPET film, and mainly aims at solving the problems that conventional BOPET films are bad in anti-ultraviolet performance and heatproofness. The preparation method comprises: 1, preparing a sericite solution; 2, preparing a titanium dioxide/sericite solution which is a coating liquid; and 3, immersing BOPET films in the coating liquid for coating by employing a doctor-blade method, drying and rolling. According to the preparation method for the anti-ultraviolet heatproof BOPET film, the employed raw materials are conventional reagents in the field, and have low commercial price; and compared with untreated BOPET films, the prepared anti-ultraviolet heatproof BOPET film is improved in softening point temperature by 20% and obviously reinforced in UV absorption characteristic peak of the film surface after treated by placing in a UV ageing oven under the conditions of 100 DEG for 1 h. The preparation method is simple in technology, does not pollute environment, and is applicable to industrialized production.

Description

technical field [0001] The invention relates to a preparation method of BOPET film. Background technique [0002] Biaxially oriented polyester film BOPET film has the characteristics of high strength, good rigidity, transparency, and high gloss; it is odorless, tasteless, colorless, non-toxic, and has outstanding strength and toughness; its tensile strength is 3 times that of PC film and nylon film. times, the impact strength is 3-5 times that of BOPP film, has excellent wear resistance, folding resistance, pinhole resistance, tear resistance and good antistatic properties. [0003] BOPET is developing from traditional packaging materials to high-end, functional, and differentiated directions. The surface problem of film materials is the key technology restricting its development. At present, BOPET films on the market generally have problems of poor UV resistance and heat resistance. With people's higher and higher requirements for product quality, the demand for polyester ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D7/01
Inventor 姜波曾天佑黄玉东白永平刘丽方飞吴婷战捷祝长城何珊王慧莲
Owner HARBIN INST OF TECH
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