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Ultra-low shrinkage sunshade cloth and preparation method thereof

An ultra-low-shrinkage, ultra-low-shrinkage technology, applied in filament/thread forming, coating, single-component polyester artificial filament, etc., can solve problems such as low fiber quality and poor mechanical properties of fibers

Active Publication Date: 2020-02-21
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the problems of poor fiber mechanical properties and low fiber quality in the prior art, to provide an ultra-low shrinkage sunshade cloth with good mechanical properties and high quality and its preparation method

Method used

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  • Ultra-low shrinkage sunshade cloth and preparation method thereof
  • Ultra-low shrinkage sunshade cloth and preparation method thereof
  • Ultra-low shrinkage sunshade cloth and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] A method for preparing an ultra-low shrinkage sunshade cloth, the steps are as follows:

[0088] (1) preparation of modified polyester;

[0089] (a) Esterification reaction: terephthalic acid, ethylene glycol and 2-ethyl-2-methyl-1,3-propanediol in a molar ratio of 1:1.2:0.03 are made into a slurry, and antimony trioxide is added , titanium dioxide and triphenyl phosphate are mixed evenly, and the esterification reaction is carried out under pressure in a nitrogen atmosphere. The pressurized pressure is normal pressure, and the temperature of the esterification reaction is 250°C. 90% of the value is the end point of the esterification reaction, wherein the addition of antimony trioxide is 0.01% of the weight of terephthalic acid, the addition of titanium dioxide is 0.20% of the weight of terephthalic acid, and the addition of triphenyl phosphate It is 0.05% of the weight of terephthalic acid, wherein the structural formula of 2-ethyl-2-methyl-1,3-propanediol is as foll...

Embodiment 2

[0098] A method for preparing an ultra-low shrinkage sunshade cloth, the steps are as follows:

[0099] (1) preparation of modified polyester;

[0100] (a) Esterification reaction; prepare terephthalic acid, ethylene glycol and 2,2-diethyl-1,3-propanediol in a molar ratio of 1:1.3:0.04 into a slurry, add ethylene glycol antimony, titanium dioxide After mixing evenly with trimethyl phosphate, carry out the esterification reaction under pressure in a nitrogen atmosphere. The pressurized pressure is normal pressure, and the temperature of the esterification reaction is 260°C. 91% is the end point of the esterification reaction, wherein the addition of ethylene glycol antimony is 0.02% of the weight of terephthalic acid, the addition of titanium dioxide is 0.21% of the weight of terephthalic acid, and the addition of trimethyl phosphate is 0.02% of the weight of terephthalic acid. 0.03% by weight of phthalic acid, wherein the structural formula of 2,2-diethyl-1,3-propanediol is a...

Embodiment 3

[0109] A method for preparing an ultra-low shrinkage sunshade cloth, the steps are as follows:

[0110] (1) preparation of modified polyester;

[0111] (a) Esterification reaction: terephthalic acid, ethylene glycol, and 2-butyl-2-ethyl-1,3-propanediol in a molar ratio of 1:1.4:0.05 are made into a slurry, and antimony acetate and titanium dioxide are added After mixing evenly with trimethyl phosphite, carry out esterification reaction under pressure in a nitrogen atmosphere. 92% is the end point of the esterification reaction, wherein the addition of antimony acetate is 0.03% of the weight of terephthalic acid, the addition of titanium dioxide is 0.23% of the weight of terephthalic acid, and the addition of trimethyl phosphite is 0.03% of the weight of terephthalic acid. 0.01% by weight of phthalic acid, wherein the structural formula of 2-butyl-2-ethyl-1,3-propanediol is as follows:

[0112]

[0113] (b) polycondensation reaction; after the esterification reaction ends,...

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Abstract

The invention relates to super-low shrinkage type sun shading cloth and a preparation method thereof. A super-low shrinkage polyester industrial filament is prepared by solid phase polycondensation tackifying, melting, metering, extrusion, cooling, oiling, stretching, heat setting and winding of modified polyester and then is woven to obtain a fabric layer; the fabric layer is subjected to two-dipping and two-rolling coating to synthesize polyurethane resin; the polyurethane resin is dried and baked to obtain the super-low shrinkage type sun shading cloth; when the sun shading cloth is cooled,the vertical height is kept unchanged and the cross section area of a slow cooling chamber is increased; at the same time, the slow cooling chamber maintains the plate surface temperature of a spinneret plate by the way of heat preservation. An oil agent for oiling contains crown ether, and the fabric layer is made of modified polyester having a molecular chain including a terephthalic acid chainsegment, an ethylene glycol chain segment and a diol chain segment with a branched chain. The preparation method is simple, the finally prepared super-low shrinkage type sun shading cloth has the dryhot-shrinkage rate of 2.2+ / -0.35% under the conditions of 190 DEG C, 15 min and 0.01 cN / dtex, and the mechanical properties are good.

Description

technical field [0001] The invention belongs to the field of fiber preparation and weaving, and relates to an ultra-low shrinkage sunshade cloth and a preparation method thereof. Background technique [0002] Since the appearance of polyethylene terephthalate (PET) fiber, it has developed rapidly because of its excellent performance, and its output has become the crown of synthetic fiber in the world. Polyester fiber has a series of excellent properties such as high breaking strength, high elastic modulus, moderate resilience, excellent heat setting performance, good heat resistance and light resistance, acid resistance, alkali resistance and corrosion resistance, and the fabric prepared from it has wrinkle resistance. And crispness and other advantages, so polyester fiber is widely used in clothing and home textiles and other fields. [0003] However, during the polycondensation reaction of synthesizing ethylene terephthalate, especially when producing linear high polymers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/00D06N3/14C08G63/183C09D175/04D01F6/92D01D5/088D01D5/096
CPCC08G63/183C09D175/04D01D5/088D01D5/096D01F6/92D06N3/0036D06N3/14D06N2209/06D06N2209/103D06N2211/125
Inventor 杨超明张烨李晓林钮臧臧
Owner JIANGSU HENGLI CHEM FIBER
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