Intermediate-high temperature acid-corrosion-resisting glass fiber treating compound and preparation method thereof

A technology of acid corrosion resistance and glass fiber, applied in the field of glass fiber reinforced material processing, can solve the problems affecting the service life of glass fiber reinforced plastic chimney flue, attenuation of mechanical properties, whitening of product surface, etc., so as to improve the performance retention rate and acid resistance. , The effect of temperature resistance improvement

Inactive Publication Date: 2014-08-06
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface treatment of glass fiber is mainly based on textile sizing containing paraffin and enhanced sizing containing polyvinyl acetate (PVAC). For example, glass fiber products containing such sizing have weak interfacial bonding force in medium-high temp

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: The high-temperature acid-resistant sizing agent in the present invention is used for winding FRP composite materials

[0024] In this example, FRP composites were prepared by using wound yarns treated with medium and high temperature acid-resistant sizing agents, and their performance retention rate after three weeks in 10% sulfuric acid by volume fraction at room temperature, 60°C and 80°C was tested.

[0025] 1. Prepare glass fiber sizing according to the following steps;

[0026] 1) Put 100g of bisphenol A epoxy resin E51 and 0.03g of benzoyl peroxide BPO into a four-necked flask, pass in nitrogen for protection, stir and raise the temperature to 80°C; then add 30g of methacrylic acid dropwise, and keep warm for about 2 hours;

[0027] 2) Cool the product obtained in step 1) to 60°C, add 13.5g of p-xylene and 0.02g of dibutyltin dilaurate, continue to stir, add 26g of vinyltriethoxysilane dropwise at a rate of 2s / drop, and keep warm Reaction about 3 ...

Embodiment 2

[0038]In the present invention, the high-temperature acid-resistant wetting agent is used for the grid cloth reinforced composite material

[0039] In this case, the grid cloth reinforced vinyl ester resin treated with medium and high temperature acid-resistant wetting agent was used to test its corrosion condition after 30 days in an environment with a volume fraction of 3% sulfuric acid at 80°C.

[0040] 1. Preparation of glass fiber sizing agent;

[0041] 1) Put 100g of bisphenol A epoxy resin and 0.02g of benzoyl peroxide BPO into a four-necked flask, stir and mix and heat to 80°C in a nitrogen-protected environment; then add 25g of methacrylic acid dropwise, and keep warm for about 2.5 hours;

[0042] 2) Cool the product obtained in step 1) to 60°C, add 13g of p-xylene and 0.02g of dibutyltin dilaurate, continue to stir, add 25g of vinyltriethoxysilane dropwise at a rate of 2s / drop, and keep warm for reaction 3 hours, obtain light yellow modified epoxy resin prepolymer;...

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PUM

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Abstract

The invention relates to an intermediate-high temperature acid-corrosion-resisting glass fiber treating compound and a preparation method thereof. The method comprises the following steps: putting bisphenol-A epoxy resin and benzoyl peroxide into a flask, and carrying out stirring and rising temperature; then dropwise adding methacrylic acid, and preserving heat; cooling the obtained product, adding paraxylene and dibutyltin dilaurate to continue to stir, dropwise adding vinyltriethoxysilane, and preserving heat to obtain a pale yellow modified epoxy resin prepolymer; adding deionized water and emulsifier into the flask, and then carrying out full stirring and heating for dissolving; adding the modified epoxy resin prepolymer slowly, and continuing to stir after dropwise adding; rapidly cooling the obtained film former emulsion to room temperature, then mixing the film former emulsion, a coupling agent, nanosilicon dioxide, a lubricating agent and an antistatic agent so as to obtain the glass fiber treating compound. The method has the benefit that the temperature resistance of a film former is improved. The treating compound can improve the performance retention rate of glass fiber reinforced plastics materials under the intermediate-high temperature acidic condition.

Description

technical field [0001] The invention relates to a glass fiber impregnating agent capable of improving the acid corrosion resistance of FRP composite materials in a medium-high temperature environment, and is particularly suitable for the treatment of glass fiber reinforced materials in the construction of FRP chimneys and flues. Background technique [0002] The glass fiber sizing is generally in the state of emulsion, and is coated on the surface of the glass fiber by a graphite roller during the drawing forming process, and coated on the surface of the glass fiber after drying. The sizing protects the glass fiber from abrasion, breakage, and flying during the drawing and winding process. The glass fiber sizing acts as a bridge between the fiber and the matrix material (resin) during use. Sizing agent formulation technology has always been one of the core technologies in the glass fiber manufacturing industry. Whether the sizing agent formulation is selected reasonably dire...

Claims

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Application Information

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IPC IPC(8): C03C25/42C03C25/36
Inventor 王继辉胡海晓冀运东倪爱清
Owner WUHAN UNIV OF TECH
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