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Modified polyester master batch and hydrophobic heat-insulating biaxially oriented polyester film

A technology for modifying polyester and masterbatch, applied in the field of polyester films, can solve the problems of difficulty in preparing super-hydrophobic films, restricting wide practical application, complicated procedures, etc., to improve hydrophobicity, easy to realize industrialized production, and simple preparation process Effect

Pending Publication Date: 2021-12-10
ANHUI GUOFENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is complicated, time-consuming and labor-intensive, and it is difficult to prepare large-area superhydrophobic films, which limit their wide practical application.

Method used

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  • Modified polyester master batch and hydrophobic heat-insulating biaxially oriented polyester film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of preparation of modified polyester masterbatch:

[0027] S1, the SiO 2 The airgel is dispersed into an appropriate amount of ethylene glycol to prepare an airgel dispersion with a mass concentration of 12%, in which SiO 2 The average particle diameter d(50) of airgel particles is 3.0 μm;

[0028] S2. Mix terephthalic acid, ethylene glycol, ethylene glycol antimony catalyst, airgel dispersion, polyhydroxyfluorosilicone oil (low molecular weight poly(methyl-3,3,3-trifluoropropyl) Siloxane) fluid) into the reactor; control the reaction system n (terephthalic acid): n (ethylene glycol) = 1.2: 1, m (polyhydroxy fluorosilicone oil) = 4% m (terephthalic acid formic acid), m(SiO 2 Airgel) is 2000ppm of the polyester mass obtained in theory, and the amount of ethylene glycol antimony catalyst is calculated as antimony element, which is 0.02% of m (terephthalic acid); Carry out the esterification reaction at low temperature, and put it under normal pressure when the ...

Embodiment 2

[0030] A kind of preparation of modified polyester masterbatch:

[0031] S1, the SiO 2 The airgel is dispersed into an appropriate amount of ethylene glycol to prepare an airgel dispersion with a mass concentration of 12%, in which SiO 2 The average particle diameter d(50) of airgel particles is 3.0 μm;

[0032] S2. Mix terephthalic acid, ethylene glycol, ethylene glycol antimony catalyst, airgel dispersion, polyhydroxyfluorosilicone oil (low molecular weight poly(methyl-3,3,3-trifluoropropyl) Siloxane) fluid) was added to the reaction kettle; n (terephthalic acid) in the control reaction system: n (ethylene glycol) = 1.5: 1, m (polyhydroxy fluorosilicone oil) = 7% m (terephthalic acid) formic acid), m(SiO 2 Airgel) is 2800ppm of the polyester mass obtained in theory, and the amount of ethylene glycol antimony catalyst is calculated as antimony element, which is 0.03% of m (terephthalic acid); The esterification reaction is carried out under low temperature, and when the w...

Embodiment 3

[0034] A kind of preparation of modified polyester masterbatch:

[0035] S1, the SiO 2 The airgel is dispersed into an appropriate amount of ethylene glycol to prepare an airgel dispersion with a mass concentration of 12%, in which SiO 2 The average particle diameter d(50) of airgel particles is 3.0 μm;

[0036] S2. Mix terephthalic acid, ethylene glycol, ethylene glycol antimony catalyst, airgel dispersion, polyhydroxyfluorosilicone oil (low molecular weight poly(methyl-3,3,3-trifluoropropyl) Siloxane) fluid) was added to the reactor; in the control reaction system, n (terephthalic acid): n (ethylene glycol) = 1.7: 1, m (polyhydroxy fluorosilicone oil) = 10% m (terephthalic acid) formic acid), m(SiO 2 Airgel) is 3500ppm of the polyester mass obtained in theory, and the amount of ethylene glycol antimony catalyst is calculated as antimony element, which is 0.04% of m (terephthalic acid); Carry out the esterification reaction at low temperature, and when the water output re...

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Abstract

The invention discloses a modified polyester master batch and a hydrophobic heat-insulating biaxially oriented polyester film, and relates to the technical field of polyester films. The modified polyester master batch is obtained by mixing polyhydroxy fluorosilicone oil, terephthalic acid, ethylene glycol, a catalyst and aerogel, and carrying out esterification reaction and condensation polymerization; the hydrophobic heat-insulating biaxially oriented polyester film comprises an upper surface layer, a core layer and a lower surface layer, the upper surface layer and the lower surface layer comprise, by weight, 20-40% of polyester chips and 60-80% of the modified polyester master batch; and the raw material of the core layer is a film-grade polyester chip. The polyhydroxy fluorosilicone oil is added in the production process of the polyester master batch for copolymerization modification, so that fluorine-silicon atoms are introduced to polyester chain segments, the surface energy of the polyester is reduced, and the hydrophobicity of the polyester is improved. The prepared polyester film has excellent super-hydrophobic performance, the added hydrophobic silicon dioxide aerogel serves as anti-sticking particles, a micro-nano double-size structure is constructed on the surface of the polyester film, and heat preservation and heat insulation are achieved.

Description

technical field [0001] The invention relates to the technical field of polyester films, in particular to a modified polyester masterbatch and a hydrophobic heat-insulating biaxially stretched polyester film. Background technique [0002] Due to the poor thermal insulation of the untreated automotive glass, the energy consumption of the vehicle cooling system is greatly increased in summer, and the energy consumption of the thermal insulation system is increased in winter, resulting in unnecessary heat loss and heat input in the environment. It is necessary to prepare a film with good heat insulation performance to make the glass have good heat insulation performance and achieve energy saving effect. [0003] When the vehicle is driving at high speed in rainy days, the falling rainwater and the splashing water splashed when overtaking are attached to the outside of the windshield. The driver can only see the part swept by the wiper, and the wiper cannot wipe off the rainwater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K7/26C08J3/22C08G63/682C08G63/695C08G63/78C08J5/18C08L67/00B32B27/36B32B27/06B32B27/18
CPCC08J3/226C08G63/6826C08G63/6956C08G63/78C08J5/18B32B27/36B32B27/08B32B27/18C08J2467/02C08K7/26C08J2367/00B32B2307/73B32B2307/304B32B2307/7265B32B2439/00B32B2535/00
Inventor 周俊胡爱华黄剑
Owner ANHUI GUOFENG PLASTIC