Preparation method of polyester sun-shading cloth

A technology of sunshade cloth and polyester, applied in the field of polyester fiber, can solve the problem of high thermal shrinkage rate of sunshade cloth, and achieve the effects of reducing entanglement, reducing shrinkage rate, and improving tensile strength and peel strength

CN109930231AActive Publication Date: 2019-06-25JIANGSU HENGLI CHEM FIBER
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-06-25

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Abstract

The invention relates to a preparation method of polyester sun-shading cloth. The preparation method comprises the following steps: warping, weaving and calendering modified polyester industrial yarnsto be adhered with a PVC film to obtain the polyester sun-shading cloth, wherein the modified polyester industrial yarns are prepared by carrying out solid-phase polycondensation and tackifying, melting, metering, extruding, cooling, oiling, stretching, heat setting, relaxation heat treatment and winding on a modified polyester melt; and the preparation method of the modified polyester before thesolid-phase polycondensation and tackifying comprises the following steps : mixing terephthalic acid, ethylene glycol, 2, 2, 3, 4, 5, 5-5- hexamethyl- 3, 4-hexanediol and the doped modified Sb2O3 powder are uniformly mixed, esterification reaction and polycondensation reaction are carried out in sequence, and relaxation heat treatment means that the modified polyester industrial yarn passes through a space of 200-240 DEG C when the overfeeding rate of winding is 3.0-5.0%. The preparation method is simple, the cost is low, and the prepared polyester sun-shading cloth is high in quality, good in tensile strength, high in peel strength, low in thermal shrinkage and wide in application range.
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Description

technical field

[0001] The invention belongs to the technical field of polyester fibers, and relates to a polyester sunshade cloth and a preparation method thereof. Background technique

[0002] With the increase of polyester production and the needs of social development, its application has gradually expanded to the industrial field. Polyester fiber has the advantages of good flexibility, high strength, good heat resistance, good wear resistance and low hygroscopicity. This kind of fiber is mostly woven into wide-width woven fabrics. The warp and weft fibers are not easy to slide, and only a very small elongation and deformation. With the increasing production of polyester fibers, people's demand for functional fibers is also increasing.

[0003] Because, under continuous sunlight, the surface temperature of the fabric and the temperature of the internal environment will increase to varying degrees, which will cause discomfort or even harm to people's body feeling and he...

Examples

Embodiment 1

[0064] The preparation method of polyester sunshade cloth, the steps are as follows:

[0065] (1) prepare modified polyester;

[0066](1.1) Synthesis of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, the method is: after mixing palladium acetate and dimethyl di-tert-butylethylene, add mass concentration It is 10% hydrogen peroxide solution, reacted at 72°C for 3 hours, cooled, crystallized and refined to obtain 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, wherein The mass ratio of dimethyldi-tert-butylethylene, hydrogen peroxide solution and palladium acetate is 1:2.0:0.015, and the structural formula of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol is as follows Shown in formula (I);

[0067] (1.2) Preparation of doped modified Sb 2 o 3 ;

[0068] (a) Mg(NO 3 ) 2 aqueous solution with a concentration of 8 mol% Sb 2 o 3 The solution is mixed evenly, Sb 2 o 3 The solvent of the solution is oxalic acid, the Mg in the mixture 2+ with Sb 3+ The molar ratio is 2:100;

[0069] (b) Add dropw...

Embodiment 2

[0085] The preparation method of polyester sunshade cloth, the steps are as follows:

[0086] (1) prepare modified polyester;

[0087] (1.1) Synthesis of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, the method is: after mixing palladium acetate and dimethyl di-tert-butylethylene, add mass concentration It is 11% hydrogen peroxide solution, reacted at 70°C for 4 hours, cooled, crystallized and refined to obtain 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, wherein The mass ratio of dimethyldi-tert-butylethylene, hydrogen peroxide solution and palladium acetate is 1:1.8:0.015, and the structural formula of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol is as follows Shown in formula (I);

[0088] (1.2) Preparation of doped modified Sb 2 o 3 ;

[0089] (a) The concentration of 0.5mol% Ca(NO 3 ) 2 Aqueous solution with a concentration of 5 mol% Sb 2 o 3 The solution is mixed evenly, Sb 2 o 3 The solvent of the solution is oxalic acid, the Ca in the mixture 2+ with Sb 3+ The molar ratio is ...

Embodiment 3

[0102] The preparation method of polyester sunshade cloth, the steps are as follows:

[0103] (1) prepare modified polyester;

[0104] (1.1) Synthesis of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, the method is: after mixing palladium acetate and dimethyl di-tert-butylethylene, add mass concentration It is 12% hydrogen peroxide solution, reacted at 74°C for 4 hours, cooled, crystallized and refined to obtain 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, wherein The mass ratio of dimethyldi-tert-butylethylene, hydrogen peroxide solution and palladium acetate is 1:1.6:0.015, and the structural formula of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol is as follows Shown in formula (I);

[0105] (1.2) Preparation of doped modified Sb 2 o 3 ;

[0106] (a) Ba(NO 3 ) 2 Aqueous solution with a concentration of 10 mol% Sb 2 o 3 The solution is mixed evenly, Sb 2 o 3 The solvent of the solution is oxalic acid, Ba in the mixture 2+ with Sb 3+ The molar ratio is 3:100;

[0107] (b) Add dropwis...