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Epoxy resin film-forming agent and preparation method thereof

A technology of epoxy resin and epoxy resin solution, which is applied in the field of glass fiber manufacturing, can solve problems such as health threats to operators, large quantities, and environmental pollution, and achieve excellent environmental protection performance, reduce production costs, and improve utilization.

Active Publication Date: 2012-05-02
CHONGQING POLYCOMP INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it needs to use a large amount of volatile organic solvents in the process of introducing hydrophilic groups on the molecular chain of epoxy resin for modification.
These organic solvents will not only pollute the environment, but also pose a threat to the health of operators

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] The embodiment of the invention discloses a preparation method of an epoxy resin film-forming agent, comprising:

[0026] a), epoxy resin is dissolved in lubricant, and the weight ratio of described epoxy resin and lubricant is (55~75): (20~35), obtains epoxy resin solution;

[0027] b), adding active amine to the epoxy resin solution, the weight ratio of the active amine to the epoxy resin is (2.5~10):(55~75);

[0028] c), add glacial acetic acid to react in the mixed solution that step b obtains, obtain the mixed solution that contains quaternary ammonium salt modified epoxy resin;

[0029] d), adding water to the mixed solution obtained in step c and mixing evenly to obtain an epoxy resin film-forming agent.

[0030] In the above preparation process, step a is the process of dissolving the epoxy resin to configure the epoxy resin solution. In this process, the present invention does not use a volatile organic solvent, but a lubricant. The reasons for choosing lubr...

Embodiment 1

[0043] 1. Add 65g of polyethylene glycol ester into a dry reaction kettle, turn on the agitator, raise the temperature to 105°C, and add 27g of epoxy resin with an epoxy equivalent of about 600 into the reaction kettle.

[0044] 2. After the epoxy resin is completely dissolved, cool down to 75°C, add 5.5g of diethanolamine, and raise the temperature of the reaction kettle to 125°C after adding the diethanolamine.

[0045] 3. During the reaction process, detect the epoxy equivalent of the resin. When the epoxy equivalent of the resin is about 2800, cool down to 105°C, add 19.54g of glacial acetic acid, and stir for 30 minutes.

[0046] 4. Slowly add water to the reaction kettle for dilution, and keep it at 65°C for 1 hour.

[0047] 5. Cool down to room temperature and discharge to obtain an epoxy resin film-forming agent with evenly dispersed resin.

Embodiment 2

[0049] 1. Add 72g of polyethylene glycol ester into a dry reaction kettle, turn on the agitator, raise the temperature to 110°C, and add 23g of epoxy resin with an epoxy equivalent of about 700 into the reaction kettle.

[0050] 2. After the epoxy resin is completely dissolved, cool down to 54°C, add 3.0g of diethylamine, and raise the temperature of the reaction kettle to 130°C after adding diethylamine.

[0051] 3. During the reaction process, detect the epoxy equivalent of the resin. When the epoxy equivalent of the resin is about 3100, cool down to 110°C, add 5.49g of glacial acetic acid, and stir for 30 minutes.

[0052] 4. Slowly add water to the reaction kettle for dilution, and keep it at 70°C for 1 hour.

[0053] 5. Cool down to room temperature and discharge to obtain an epoxy resin film-forming agent with evenly dispersed resin.

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PUM

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Abstract

The invention provides an epoxy resin film-forming agent and a preparation method thereof. The preparation method comprises the steps of: a) dissolving the epoxy resin in a lubricant to obtain an epoxy resin solution, wherein the weight ratio of the epoxy resin and the lubricant is (55-75): (20-35); b), adding active amine into the epoxy resin solution, wherein the weight ratio of the active amine and the epoxy resin is (2.5-10): (55-75); c), adding glacial acetic acid into the mixed solution obtained by the step b for reaction to obtain a mixed solution containing the quaternary ammonium salt modified epoxy resin; and d), adding water into the mixed solution obtained by the step c to mix uniformly to obtain the epoxy resin film-forming agent. The epoxy resin provided by the invention uses the lubricant as a reaction medium which is non-volatile, poses little pollution on environment and less damage on health of operators and can be directly used as the lubricant component of an impregnating compound, thereby improving the utilization ratio of raw materials and reducing the production cost.

Description

technical field [0001] The invention relates to the field of glass fiber manufacturing, in particular to an epoxy resin film-forming agent and a preparation method thereof. Background technique [0002] The sizing agent for glass fiber is a multi-component aqueous solution or emulsion with water or organic medium as the medium and film-forming agent, coupling agent, antistatic agent, etc. as the solute. It plays a very important role in the production and application of glass fiber. It is used to enhance the adhesion, coating and fleece resistance of fiber bundles, smooth the surface of glass fibers, increase softness and wear resistance, make it easier to wind and not easily damaged when winding. [0003] The film-forming agent is an important part of the sizing agent, which accounts for the largest proportion in the sizing agent. Its function is to protect the glass fiber during the production and processing of the glass fiber, and to endow the glass fiber with some specia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C25/36
Inventor 龙浩王乐
Owner CHONGQING POLYCOMP INT