Preparation method of grafted starch film-forming agent for glass fiber

A technology of grafting starch and glass fiber, which is applied in the field of preparing a graft starch film-forming agent for glass fiber, can solve the problems of poor color of glass fiber cloth, poor use effect and difficult removal, etc., so as to improve the antistatic ability, The effect of easy removal and low cost of raw materials

Inactive Publication Date: 2016-07-06
XUZHOU XINGZHIYUAN AGRI TECH SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional film-forming agents mostly use paraffin or resin as the main component. The cost of the two components is high, and paraffin will cause the color of the glass fiber cloth to deteriorate; the resin material is not easy to remove during the glass fiber cleaning process, so the existing Film formers are less effective in glass fiber production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] (1) Starch grafting: Weigh 20 parts of corn starch, add 150 parts of water, heat up to 80°C, keep warm and gelatinize for 1 hour, cool to room temperature, add pH buffer to adjust the pH of the gelatinized solution to 6 , then add acrylic acid monomer with a content of 1.5% by starch weight and ammonium persulfate with a content of 1.5%, the temperature of the reaction solution is raised to 45°C, and the grafted starch sample is obtained after reacting for 0.5h;

[0015] (2) Preparation of film-forming agent: the grafted starch sample obtained in step (1) is warmed up to 65°C, the solution is cooled to 30°C after gelatinization for 0.5h, and after adjusting the pH of the solution to be neutral, add 1% starch by weight Amylase, stirred and reacted for 1.5h, was filtered and dried to obtain a solid film-forming agent.

Embodiment 2

[0017] (1) Starch grafting: Weigh 30 parts of tapioca starch, add 180 parts of water, heat up to 85°C, heat-preserve and gelatinize for 1.2h, cool to room temperature, add pH buffer to adjust the pH of the gelatinized solution 7. Add acrylic acid monomer with a content of 3% by weight of starch and ammonium persulfate with a content of 3%, and raise the temperature of the reaction solution to 50° C., and obtain a grafted starch sample after reacting for 1.5 hours;

[0018] (2) Film-forming agent preparation: the grafted starch sample obtained in step (1) is warmed up to 75°C, the solution is cooled to 35°C after gelatinization for 1h, and after adjusting the pH of the solution to be neutral, add starch with 2.5% starch weight Enzyme, stirred and reacted for 2.5h, then dried by suction to obtain a solid film-forming agent.

Embodiment 3

[0020] (1) Starch grafting: Weigh 25 parts of pea starch, add 170 parts of water, heat up to 83°C, heat-preserve and gelatinize for 1.1h, cool to room temperature, add pH buffer to adjust the pH of the gelatinized solution 6.5, then add acrylic acid monomer with a content of 2.3% by weight of the starch and an initiator with a content of 2%, raise the temperature of the reaction solution to 48° C., and obtain a grafted starch sample after reacting for 1 hour;

[0021] (2) Preparation of film-forming agent: the grafted starch sample obtained in step (1) is warmed up to 70°C, the solution is cooled to 33°C after gelatinization for 0.75h, and after adjusting the pH of the solution to be neutral, add 2% starch by weight Amylase, stirred and reacted for 2 hours, was filtered and dried to obtain a solid film-forming agent.

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PUM

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Abstract

The invention discloses a preparation method of a grafted starch film-forming agent for glass fiber. The method comprises the following steps: (1) 20-30 parts of starch is weighed, and is added into 150-180 parts of water; the temperature is increased to 80-85 DEG C, and gelatinization is carried out under a maintained temperature for 1-1.2h; the product is cooled to normal temperature; the pH value of the gelatinized solution is regulated to 6-7; acrylic monomer and an initiator are added; the reaction liquid is heated to a temperature of 45-50 DEG C; and a reaction is allowed for 0.5-1.5h, such that a grafted starch sample is obtained; and (2) the grafted starch sample obtained in the step (1) is heated to a temperature of 65-75 DEG C, and gelatinization is carried out for 0.5-1h; the solution is cooled to a temperature of 30-35 DEG C; the pH value of the solution is regulated to neutral; amylase with weight 1-2.5% of that of starch is added; a reaction is carried out for 1.5-2.5h under stirring; and suction filtration drying is carried out, such that the solid film-forming agent is obtained. The film-forming agent provided by the invention has a low production cost. When the agent is used on glass fiber, glass fiber cloth fineness is not influenced, and subsequent cleaning is convenient.

Description

technical field [0001] The invention relates to a film-forming agent, in particular to a preparation method of a grafted starch film-forming agent for glass fibers, and belongs to the field of starch film-forming agents. Background technique [0002] During the production process of glass fiber, it is necessary to coat an emulsion treatment agent on its surface to improve the mechanical properties of glass fiber and improve the bundling of glass fiber. The main component of this treatment agent is a film-forming agent, which acts on the glass A dense film is formed on the surface of the fiber to protect the glass fiber. Traditional film-forming agents mostly use paraffin or resin as the main component. The cost of the two components is high, and paraffin will cause the color of the glass fiber cloth to deteriorate; the resin material is not easy to remove during the glass fiber cleaning process, so the existing Film formers are less effective in glass fiber production. Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C03C25/28C03C25/24
Inventor 吴强
Owner XUZHOU XINGZHIYUAN AGRI TECH SERVICE CO LTD
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