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Modified polyester slurry and preparation method thereof

A modified polyester and size technology, which is applied in textiles and papermaking, fiber treatment, fiber types, etc., can solve problems such as use restrictions and environmental pollution of PVA materials, and achieve clear openings, excellent sizing effects, and strong penetration Effect

Active Publication Date: 2020-06-23
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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  • Modified polyester slurry and preparation method thereof
  • Modified polyester slurry and preparation method thereof
  • Modified polyester slurry and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A modified polyester slurry, 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 80 rpm, react at 120°C for 60 min, and cool the obtained reaction mixture to room temperature; Glycerin and 40 parts of 2,2-bis(hydroxymethyl)propionic acid were added to the above reaction mixture, and reacted at 120°C for 6 hours under stirring at 80 rpm. During the reaction, 10 parts of pure water were added, until the gel formed Stop the reaction.

[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) Use 50% ethanol to mix 30 Part of the silicone oil was dissolved, and a 20% silicone oil solution was prepared and added dropwise to the above suspension. While stirring for 3 hours, the temperature was slowly increased to 80°C; (3) After slowly heating t...

Embodiment 2

[0023] A modified polyester slurry, 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 80 rpm, react at 120°C for 60 min, and cool the obtained reaction mixture to room temperature; Glycerin and 40 parts of 2,2-bis(hydroxymethyl)propionic acid were added to the above reaction mixture, and reacted at 120°C for 6 hours under stirring at 80 rpm. During the reaction, 10 parts of pure water were added, until the gel formed Stop the reaction.

[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℃; (2) Use 50% ethanol to mix 30 Part of the silicone oil was dissolved, and a 20% silicone oil solution was prepared and added dropwise to the above suspension. While stirring for 3 hours, the temperature was slowly increased to 80°C; (3) After slowly heating th...

Embodiment 3

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

[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℃; (2) Use 50% ethanol to mix 30 Part of the silicone oil was dissolved, and a 20% silicone oil solution was prepared and added dropwise to the above suspension. While stirring for 3 hours, the temperature was slowly increased to 80°C; (3) After slowly heating the suspension to 90°C, continue stirring for 3 hours , And then stir the te...

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PUM

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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 new chemical fiber materials, and specifically 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 own unique advantages. The viscosity of the slurry is stable, the film forming ability is large, the adhesion and abrasion resistance are strong, and it can reinforce the yarn. After sizing, it is not affected by the environment and has viscosity and hygroscopicity. Therefore, for a long time, PVA has been widely used in sizing lacquered cotton blended yarn and pure cotton low extra-high density fabric. [0003] However, it also has its shortcomings. It is easy to appear side by side and unclear, which brings difficulties to weaving. The most important issue is environmental protection. The United States raised this issue in the early 1980s, and some European countries ...

Claims

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Application Information

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Patent Type & Authority Applications(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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