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Glass fiber composite polyester resin material for cable support in metro tunnel

A technology of glass fiber and composite polyester, which is applied in the field of materials for cable supports in subway tunnels, and can solve the problems of weak interface force between unsaturated polyester resin and glass fiber, material failure, etc.

Inactive Publication Date: 2019-07-26
王炳福
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the deficiencies in the prior art, the present invention provides a glass fiber composite polyester resin material for cable brackets in subway tunnels, which solves the problem of the existing glass fiber composite polyester resin materials for cable brackets in subway tunnels. The interface bonding force with the glass fiber is not strong, which leads to the technical problem that the material fails when it is under load

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for preparing a glass fiber composite polyester resin material for a cable support in a subway tunnel comprises the following steps:

[0027] (1) Add 80g of chopped E-CR glass fibers with a length of 3-6mm and a diameter of 9-13um into a mixed solvent consisting of 200g of concentrated sulfuric acid and 50g of concentrated nitric acid, and keep magnetically stirring at room temperature for 8h at a speed of 120rpm; Afterwards, filter the mixed solution, and use distilled water to clean the surface of the glass fiber until the pH of the filtrate is 7;

[0028] Will be placed in the ball mill jar together with 100g absolute ethanol, in N 2 Carry out ball milling under protection for 2 hours, then add 10g of γ-aminopropyltriethoxysilane coupling agent, continue ball milling for 1 hour, dry and evaporate to remove absolute ethanol, and pass through a 1340 mesh sieve to obtain glass fiber powder with an average particle size ≤ 10um;

[0029] (2) Weigh 3g Al 2 o 3 ...

Embodiment 2

[0035] A method for preparing a glass fiber composite polyester resin material for a cable support in a subway tunnel comprises the following steps:

[0036] (1) Add 100 g of chopped E-CR glass fibers with a length of 3 to 6 mm and a diameter of 9 to 13 um into a mixed solvent consisting of 200 g of concentrated sulfuric acid and 50 g of concentrated nitric acid, and keep stirring magnetically at room temperature for 10 hours at a speed of 180 rpm; Afterwards, filter the mixed solution, and use distilled water to clean the surface of the glass fiber until the pH of the filtrate is 7;

[0037] Will be placed in the ball mill jar together with 100g absolute ethanol, in N 2 Carry out ball milling under protection for 5 hours, then add 20g of γ-aminopropyltriethoxysilane coupling agent, continue ball milling for 3 hours, dry and evaporate to remove absolute ethanol, and pass through a 1340 mesh sieve to obtain glass fiber powder with an average particle size of ≤10um;

[0038] (2...

Embodiment 3

[0044] A method for preparing a glass fiber composite polyester resin material for a cable support in a subway tunnel comprises the following steps:

[0045] (1) Add 90g of chopped E-CR glass fibers with a length of 3-6mm and a diameter of 9-13um into a mixed solvent consisting of 200g of concentrated sulfuric acid and 50g of concentrated nitric acid, and keep magnetically stirring at room temperature for 9h at a speed of 150rpm; Afterwards, filter the mixed solution, and use distilled water to clean the surface of the glass fiber until the pH of the filtrate is 7;

[0046] Will be placed in the ball mill jar together with 100g absolute ethanol, in N 2 Carry out ball milling under protection for 4 hours, then add 15g of γ-aminopropyltriethoxysilane coupling agent, continue ball milling for 2 hours, dry and evaporate to remove absolute ethanol, and pass through a 1340 mesh sieve to obtain glass fiber powder with an average particle size ≤ 10um;

[0047] (2) Weigh 4g Al 2 o 3...

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Abstract

The invention relates to the technical field of materials for cable supports in metro tunnels and discloses a glass fiber composite polyester resin material for a cable support in a metro tunnel. A preparation method of the material includes: wrapping a silane coupling agent on the surface of glass fiber powder after going through mixed strong acid oxidation treatment, wrapping the silane couplingagent on the surface of mixed ceramic powder, compositing unsaturated polyester resin with the glass fiber powder with slurry, filling the mixed ceramic powder with slurry into composite slurry, andperforming gel solidification forming to obtain the glass fiber composite polyester resin material. The technical problem that existing glass fiber composite polyester resin materials fail in load bearing due to the fact that interface bonding action force of unsaturated polyester resin and glass fiber is not strong is solved.

Description

technical field [0001] The invention relates to the technical field of materials for cable supports in subway tunnels, in particular to a glass fiber composite polyester resin material for cable supports in subway tunnels. Background technique [0002] The humid environment of the subway tunnel and the special working condition of using the running rail backflow make the metal components in the tunnel very easy to rust. With the increase of the operation time, this kind of corrosion situation has been deteriorating, and has become a major hidden danger affecting the safety of subway operation. When inspecting the cable support of Beijing Subway Line 1, which has been in operation for the longest time in China, it was found that although it has been replaced and maintained many times, the metal support is corroded and mottled, and it has been overwhelmed. In order to completely solve the problem of rust and corrosion of metal brackets in subway tunnels, Guangzhou Metro has a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/06C08K13/06C08K9/10C08K7/14C08K3/22C08J5/08
CPCC08J5/08C08J2367/06C08K7/14C08K9/10C08K13/06C08K2003/222C08K2003/2227C08K2003/2241C08K2201/003C08K2201/004
Inventor 王炳福
Owner 王炳福
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