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A kind of modified polyester size and preparation method thereof

A technology for modifying polyester and sizing, applied in textiles and papermaking, fiber types, fiber processing, etc., can solve the problems of environmental pollution and use restrictions of PVA materials, achieve excellent sizing effect, clear openings, and reduce the rate of broken ends Effect

Active Publication Date: 2020-11-03
湖南万家工贸实业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the requirements for environmental protection have become higher and higher, and the environmental pollution of PVA materials has received great attention, and its use has begun to be restricted.

Method used

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  • A kind of modified polyester size and preparation method thereof
  • A kind of modified polyester size and preparation method thereof
  • A kind of modified polyester size and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A modified polyester size, its preparation method is as follows:

[0017] (1) Preparation of polyester: under nitrogen, add 30 parts of citric acid and 15 parts of PEG-200, under stirring at 80rpm, react at 120°C for 60min, and cool the obtained reaction mixture to room temperature; Add glycerin and 40 parts of 2,2-bis(hydroxymethyl)propionic acid to the above reaction mixture, and react at 120°C for 6 hours under stirring at 80 rpm, add 10 parts of pure water during the reaction, and wait until the gel is formed Stop responding.

[0018] (2) The preparation steps of modified montmorillonite are as follows: (1) Mix 100 parts of montmorillonite with pure water to prepare a 5wt% suspension and heat it to 70°C; (2) Mix 30 parts with 50% ethanol Dissolve part of silicone oil, prepare 20% silicone oil solution, and add it dropwise to the above suspension, while stirring for 3 hours, slowly raise the temperature to 80°C; (3) After slowly heating the suspension to 90°C, conti...

Embodiment 2

[0023] A modified polyester size, its preparation method is as follows:

[0024] (1) Preparation of polyester: under nitrogen, add 30 parts of citric acid and 15 parts of PEG-200, under stirring at 80rpm, react at 120°C for 60min, and cool the obtained reaction mixture to room temperature; Add glycerin and 40 parts of 2,2-bis(hydroxymethyl)propionic acid to the above reaction mixture, and react at 120°C for 6 hours under stirring at 80 rpm, add 10 parts of pure water during the reaction, and wait until the gel is formed Stop responding.

[0025] (2) The preparation steps of modified montmorillonite are as follows: (1) mix 100 parts of montmorillonite with pure water to prepare a 5wt% suspension, and heat it to 70°C; (2) mix 30 parts with 50% ethanol Dissolve part of silicone oil, prepare 20% silicone oil solution, and add it dropwise to the above suspension, while stirring for 3 hours, slowly raise the temperature to 80°C; (3) After slowly heating the suspension to 90°C, cont...

Embodiment 3

[0030] (1) Preparation of polyester: under nitrogen, add 30 parts of citric acid and 15 parts of PEG-200, under stirring at 80rpm, react at 120°C for 60min, and cool the obtained reaction mixture to room temperature; Add glycerin and 40 parts of 2,2-bis(hydroxymethyl)propionic acid to the above reaction mixture, and react at 120°C for 6 hours under stirring at 80 rpm, add 10 parts of pure water during the reaction, and wait until the gel is formed Stop responding.

[0031] (2) The preparation steps of modified montmorillonite are as follows: (1) mix 100 parts of montmorillonite with pure water to prepare a 5wt% suspension, and heat it to 70°C; (2) mix 30 parts with 50% ethanol Dissolve part of silicone oil, prepare 20% silicone oil solution, and add it dropwise to the above suspension, while stirring for 3 hours, slowly raise the temperature to 80°C; (3) After slowly heating the suspension to 90°C, continue to stir for 3h , and then lower the temperature to room temperature w...

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Abstract

The invention belongs to the technical field of novel chemical fiber materials, and specifically relates to modified polyester slurry and a preparation method thereof. The modified polyester slurry comprises 5 to 100 parts of modifier, 1 to 20 parts of polyester, 0.05 to 0.1 part of modified montmorillonite and 50 to 200 parts of water by weight. The modifier is prepared from hydrated silica and silicone oil, and the polyester is prepared from 30 to 55 parts by weight of citric acid, 15 to 26 parts by weight of PEG-200, 15 to 40 parts by weight of 2,2-bis (hydroxymethyl) propionic acid, 5 to 10 parts by weight of glycerin, and 1 to 10 parts by weight of pure water; and the modified montmorillonite is prepared from 50 to 100 parts by weight of montmorillonite and 30 to 50 parts by weight ofsilicone oil. According to the modified polyester slurry prepared by the invention, the viscosity and the surface tension of the slurry can be reduced by adding the modifier, so that the slurry permeability is improved; and by adding the modified montmorillonite, the tensile property of a yarn is improved, the end breakage rate is reduced, the cost is reduced, the degradation is easy, the operation is convenient, the pollution is avoided, no catalyst is needed in the preparation of the polyester, and the modified polyester slurry has higher economic benefits and social benefits.

Description

technical field [0001] The invention belongs to the technical field of novel chemical fiber materials, and in particular relates to a modified polyester slurry and a preparation method thereof. Background technique [0002] In the textile industry, polyvinyl alcohol (PVA) is commonly used to sizing fabrics. PVA has its unique advantages, such as stable viscosity of the slurry, strong film forming ability, strong adhesion and abrasion resistance, and can reinforce yarns. It has excellent strength, is not affected by the environment after sizing, and has high viscosity and hygroscopicity. Therefore, for a long time, PVA has been widely used in the sizing of lacquered cotton blended yarns and pure cotton low-, ultra-high-density fabrics. [0003] But it also has shortcomings at the same time, it is easy to appear side-by-side, the opening is not clear, which brings difficulties to weaving, and the most important thing is environmental protection. The United States raised this i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/507D06M11/79D06M15/643
CPCD06M11/79D06M15/507D06M15/643D06M2200/40
Inventor 刘凤兰
Owner 湖南万家工贸实业有限公司
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