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Micro-porous polyester film containing aromatic chain segment

An aromatic, microporous technology that can be used in applications, home appliances, flat products, etc., to solve problems such as hole blockage, high price, and pollution of surrounding systems.

Active Publication Date: 2016-07-13
TORAY ADVANCED MATERIALS RES LAB CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of filler is nano-sized, but it is expensive
At the same time, because the filler will peel off from the film, the pores will be blocked, and the surrounding system will be polluted, resulting in the loss of the function of the microporous film.

Method used

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  • Micro-porous polyester film containing aromatic chain segment
  • Micro-porous polyester film containing aromatic chain segment
  • Micro-porous polyester film containing aromatic chain segment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6、 comparative example 1～5

[0098] Use a twin-screw extruder to extrude and granulate, and the extrusion temperature is 235-265°C. Next, a non-oriented film with a thickness of 100 μm was prepared by single-screw extrusion casting at a casting temperature of 235-265° C. Furthermore, in water at 80°C, the unoriented film was simultaneously biaxially stretched 3×3 times, and the composition ratio is listed in Table 1. All films have Tg greater than 25°C. The test results of various properties are listed in Table 1. The films of Comparative Examples 1-3 had no microporosity, and Comparative Example 4 could not be molded.

Embodiment 7～10、 comparative example 6～8

[0100] Use a twin-screw extruder to extrude and granulate, and the extrusion temperature is 235-265°C. Next, an unoriented film with a thickness of 80 μm was prepared by blow molding through a single-screw extruder. The blow molding temperature is 235-265°C. Furthermore, under steam heating, the unoriented film was simultaneously biaxially stretched 3×3 times, and the composition ratio is listed in Table 2. All films have Tg greater than 25°C. The test results of various properties are listed in Table 2. The films of Comparative Examples 6-7 had no microporosity, and Comparative Example 8 could not be molded.

Embodiment 11-17

[0102] According to the proportioning of Example 4, a twin-screw extruder is used to extrude and granulate, and the extrusion temperature is 235-265°C. Next, a non-oriented film with a thickness of 100 μm was prepared by single-screw extrusion casting at a casting temperature of 235-265° C. Furthermore, according to the conditions shown in Table 3, the unoriented film was uniaxially or biaxially stretched in hot water. All films have Tg greater than 25°C. The test results of various properties are listed in Table 3.

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Abstract

The invention provides a micro-porous polyester film containing an aromatic chain segment. The micro-porous polyester film is provided with surface holes with the diameter of 10-10000nm, and the sum of areas of like holes is 20% or above of the total surface area of the film. The micro-porous polyester film containing an aromatic chain segment is a dense and uniform micro-porous film provided with nano-micro micro-pores, has the characteristics of simple and fast processing method, no poisonous or harmful solvents, and environmental protection, and can be applied in the fields of health nursing, medical treatment, building, water treatment and electronic products.

Description

technical field [0001] The invention belongs to the field of polymer materials and relates to a polyester microporous film. Background technique [0002] As moisture-permeable and waterproof films, battery separators, separation membranes, tissue engineering materials, energy storage materials, etc., microporous films have a wide range of applications in various fields such as health care, medical treatment, construction, water treatment, electronic products, packaging, or decoration. application. The preparation methods of microporous films mainly include foaming, particle filling-stretching, solvent etching, phase separation, self-assembly, etc. The microporous films prepared by various methods have their own characteristics in structure. [0003] CN201110414695.4 uses phase separation technology to provide a polylactic acid porous material with a pore size between 5-400 μm, which can be used as a porous scaffold for tissue engineering. In the process of making porous ma...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L71/08C08L67/00C08L23/06C08J9/00B29C55/28B29C47/92B29L7/00B29C48/92
Inventor 王春桂宗彦阮晓白长田俊一
Owner TORAY ADVANCED MATERIALS RES LAB CHINA
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