Polyvinyl alcohol nonwoven fabric and preparation method thereof

A technology of polyvinyl alcohol and non-woven fabrics, applied in non-woven fabrics, textiles and papermaking, textile materials processing and other directions, can solve the problems of instability, intensified decomposition, low processing efficiency, etc., to achieve a softer and more comfortable feel, break The effect of elongation improvement and mechanical properties improvement

Active Publication Date: 2019-09-24
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the melting point of polyvinyl alcohol is as high as 220-230°C, and under heated conditions, polyvinyl alcohol begins to be unstable and decomposes at 180°C. As the temperature continues to rise, not only the decomposition intensifies, but also crosslinking occurs; therefore, Pure polyvinyl alcohol is not thermoplastic, that is, non-woven fabrics made of polyvinyl alcohol fibers are not thermoplastic. This is one of the biggest defects of polyvinyl alcohol non-woven fabrics, that

Method used

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  • Polyvinyl alcohol nonwoven fabric and preparation method thereof
  • Polyvinyl alcohol nonwoven fabric and preparation method thereof
  • Polyvinyl alcohol nonwoven fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A preparation method of polyvinyl alcohol nonwoven fabric, comprising the steps of:

[0041] (1) Preparation of a modifying solution for polyvinyl alcohol nonwoven fabrics, the modified solution for polyvinyl alcohol nonwoven fabrics includes the following components (as shown in Table 1) in parts by weight.

[0042] Table 1

[0043]

[0044] After the above-mentioned components are measured separately, they are respectively added into the dissolution container with a stirring and heating device, and the stirring is started at a stirring rate of 60 rpm, and the heating is started, and the temperature is raised to a temperature range of 95°C. Keep it under high temperature for 2 hours to ensure that the polyvinyl alcohol is completely dissolved, cool down to 90°C and keep it warm for 0.5 hours, then cool to room temperature and discharge for later use to obtain a polyvinyl alcohol non-woven fabric modification solution;

[0045] (2) Use step (1) described polyvinyl a...

Embodiment 2

[0053] A preparation method of polyvinyl alcohol non-woven fabric, specifically comprising the steps of:

[0054] (1) Preparation of a modifying solution for polyvinyl alcohol nonwoven fabrics, the modified solution for polyvinyl alcohol nonwoven fabrics includes the following components in parts by weight (as shown in Table 3).

[0055] table 3

[0056]

[0057]

[0058] After the above-mentioned components are measured separately, they are respectively added into the dissolution container with a stirring and heating device, the stirring is started, the stirring rate is 120 rpm, and the heating is started, and the temperature is raised to a temperature range of 100°C. Keep it under high temperature for 2 hours to ensure that the polyvinyl alcohol is completely dissolved, cool down to 90°C and keep it warm for 1.0 hour, then cool to room temperature and discharge it for later use to obtain a polyvinyl alcohol non-woven fabric modification solution;

[0059] (2) Use step...

Embodiment 3

[0066] A preparation method of polyvinyl alcohol non-woven fabric, specifically comprising the steps of:

[0067] (1) Preparation of a modifying solution for polyvinyl alcohol nonwoven fabrics, the modified solution for polyvinyl alcohol nonwoven fabrics includes the following components in parts by weight (as shown in Table 5).

[0068] table 5

[0069]

[0070]

[0071] After the above-mentioned components are measured separately, they are respectively added into a dissolution container with a stirring and heating device, and the stirring is started at a stirring rate of 100 rpm, and heating is started to raise the temperature to a temperature range of 96°C. Keep it under high temperature for 2 hours to ensure that the polyvinyl alcohol is completely dissolved, cool down to 90°C and keep it warm for 0.6 hours, then cool to room temperature and discharge for later use to obtain a polyvinyl alcohol non-woven fabric modification solution.

[0072] (2) Use step (1) descri...

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Abstract

The invention discloses polyvinyl alcohol nonwoven fabric and a preparation method thereof. The method includes preparing polyvinyl alcohol nonwoven fabric modification liquid, and in the preparation process of the polyvinyl alcohol nonwoven fabric, subjecting polyvinyl alcohol fabrics, which enter a pre-wetting zone after opening, carding and mechanical lapping, to double-side spraying; feeding the polyvinyl alcohol fabrics to a low-temperature drying zone for surface drying, hot-rolling and drying the polyvinyl alcohol fabrics for reinforcement, and performing hot-press shaping and embossing by a shaping roll; cooling down by a cooling roll, and performing unfolding and winding to obtain the polyvinyl alcohol nonwoven fabric. The polyvinyl alcohol nonwoven fabric modification liquid comprises, by weight, 100 parts of water, 3-20 parts of PVA (polyvinyl alcohol), 5-30 parts of plasticizers, 5-25 parts of polyether, 3-20 parts of inorganic fillers, 0.5-2.0 parts of wetting agents, 0.3-1.0 part of slipping agent, 0.5-1.0 part of defoamer and 0.3-1.0 part of mould inhibitor. The polyvinyl alcohol nonwoven fabric prepared by the preparation method has improved mechanical and physical properties and excellent thermoplastic properties.

Description

technical field [0001] The invention belongs to the field of nonwoven material preparation, and in particular relates to a polyvinyl alcohol nonwoven fabric and a preparation method thereof. Background technique [0002] As an environmentally friendly material, polyvinyl alcohol (PVA) has been rapidly developed and applied in many fields in recent years. As a country with a large vinylon production capacity, China has abundant raw material sources and application markets. In the pre-production process of vinylon, the polyvinyl alcohol (PVA) fiber formed by wet spinning coagulation bath can be directly used without further acetal treatment. For the production of polyvinyl alcohol non-woven fabrics, the production of polyvinyl alcohol non-woven fabrics is a field that has been rapidly developed and applied in recent years. Due to the water-soluble properties and environmental friendliness of polyvinyl alcohol, it has begun to replace non-woven fabrics made of plastic syntheti...

Claims

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Application Information

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IPC IPC(8): D06M15/333D06M15/53D06M13/148D06M11/79D06M13/188D06M13/192D06M11/56D06M13/41D06M13/224D04H1/4326D06B1/02D06B15/00D06C7/02D06M101/24
CPCD04H1/4326D06B1/02D06B15/00D06C7/02D06M11/56D06M11/79D06M13/148D06M13/1845D06M13/188D06M13/192D06M13/224D06M13/41D06M15/333D06M15/53D06M2101/24
Inventor 崔跃飞
Owner SOUTH CHINA UNIV OF TECH
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