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Polyester composition and its uses

A technology of composition and polymer, applied in the field of polyester composition, can solve problems such as poor adhesion, low moisture permeability, and affecting performance, and achieve the effects of good elasticity, good moisture permeability, high adsorption and moisture absorption performance

Active Publication Date: 2006-06-21
CHINESE TEXTILE ACAD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Method (2) It is difficult to find additives to dissolve inorganic materials such as calcium carbonate and barium sulfate in the dyeing and finishing process
[0013] Existing polyester films and coatings use the mechanism of hydrophilic group transmission to meet the functional requirements when waterproof and moisture permeability are required. When the ambient humidity does not reach a certain level, the moisture permeability is low, which affects its performance. , and its adhesive performance is poor

Method used

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  • Polyester composition and its uses
  • Polyester composition and its uses
  • Polyester composition and its uses

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Ethylene glycol, terephthalic acid, isophthalic acid and clay are subjected to esterification and polycondensation reactions to obtain polyester with an intrinsic viscosity of 0.5 and a molar ratio of ethylene glycol to acid of 1.2. The molar ratio of clay is 1%, and the weight ratio of clay to polymer is 0.1%. After the copolyester chips are blended and dried with ordinary spinning grade PET chips, they are spun with ordinary spinnerets, and the processed fibers are chemically processed. Weight reduction, the raw material is sodium hydroxide, and the weight concentration is 0.3%; the catalyst is dodecyldimethylammonium bromide (1227), and the weight concentration is 0.05%; the treatment time is 80min, and the treatment temperature is 115°C; the bath ratio 1:30; the reduction rate is 15%.

Embodiment 2

[0057] Ethylene glycol, terephthalic acid, isophthalic acid and diatomaceous earth are subjected to esterification and polycondensation reactions to obtain polyester with an intrinsic viscosity of 0.6 and a molar ratio of ethylene glycol to acid of 1.3, of which isophthalic acid The molar ratio in acid is 2%, and the weight ratio of diatomaceous earth to polymer is 0.3%. After blending and drying the copolyester chips with ordinary spinning grade PET chips, they are spun with ordinary spinnerets and processed into The fiber is carried out chemical reduction, and raw material is sodium hydroxide, and weight concentration is 0.3%; Catalyst is dodecyl dimethyl ammonium bromide (1227), and weight concentration is 0.05%; Treatment time is 30min; Treatment temperature is 120 °C; bath ratio 1:50; reduction rate 15%.

Embodiment 3

[0059] Ethylene glycol, terephthalic acid, isophthalic acid and montmorillonite are subjected to esterification and polycondensation reactions to obtain polyester with an intrinsic viscosity of 0.5 and a molar ratio of ethylene glycol to acid of 1.2, of which isophthalic acid The molar ratio in acid is 5%, and the weight ratio of montmorillonite to polymer is 0.9%. After the copolyester chips are blended and dried with ordinary spinning grade PET chips, they are spun with ordinary spinnerets and processed into The fiber is carried out chemical reduction, and raw material is sodium hydroxide, and weight concentration is 0.7%; Catalyst is dodecyl dimethyl ammonium bromide (1227), and weight concentration is 0.07%; Processing time is 90min; Processing temperature is 100 ° C; bath ratio 1:15; reduction rate 20%.

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Abstract

The invention relates to a polyester composition and its use, wherein the polyester composition contains polyester or polymeric compound with polyester as the main body, and porous material whose content is 0.1-10% of the total weight of the composition. The polyester composition can be used for the preparation of fabrics, thin film and coating composite material, which are obtained through polyester composition extrusion formation and alkaline treatment.

Description

technical field [0001] The invention relates to a polyester composition and its application, belonging to the technical field of chemical materials. Background technique [0002] Polyester and its copolyesters composed of ethylene terephthalate as the main polymer are the main raw materials for synthetic fibers, and are also one of the main raw materials for plastic films and coating materials. Due to the compact macromolecular chain structure of polyester and the lack of active groups, the surface of its products is smooth. In applications such as film materials, when the surface needs to be coated with paint or compounded with other materials, its adhesion to other materials Poor performance, usually need to treat its surface such as corona treatment, plasma treatment and other methods to improve its surface properties to increase adhesion. [0003] When applied to synthetic fibers, the fibers are stretched, oriented, and crystallized, and the molecular arrangement is mor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/03C08J5/18C08K3/34D01D5/08D01F6/62
Inventor 杨喆陈伟钟淑芳张熙宇
Owner CHINESE TEXTILE ACAD
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