Glass fiber-reinforced plastic high-strength composite strengthening rib and production technology thereof

A technology of glass fiber reinforced plastics and reinforcing ribs, applied in artificial islands, water conservancy projects, infrastructure engineering, etc., can solve the problems of poor bonding between steel bars and resin materials, non-recoverable, easy to rust, etc., to prevent theft of well covers and strong integrity , good toughness

Active Publication Date: 2016-05-04
东营市天诚建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-strength composite reinforcing bar of glass fiber reinforced plastics, which solves the defects of poor bonding between steel bar and resin

Method used

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  • Glass fiber-reinforced plastic high-strength composite strengthening rib and production technology thereof
  • Glass fiber-reinforced plastic high-strength composite strengthening rib and production technology thereof
  • Glass fiber-reinforced plastic high-strength composite strengthening rib and production technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1

[0023] A fiberglass high-strength composite reinforcing rib, which is composed of glass fibers wound at the same center into multiple interlaced five-pointed star structures, and the vertices of all five-pointed star structures are located on the same circumference; the angle between adjacent five-pointed star structures is 18 degree. The glass fiber is a glass fiber uniformly impregnated with a resin adhesive. The resin adhesive is mixed with 0.1 parts by weight of unsaturated polyester resin, 0.005 parts by weight of curing agent and 0.005 parts by weight of accelerator.

Example Embodiment

[0024] Example 2

[0025] A fiberglass high-strength composite reinforcing rib, which is composed of glass fibers wound at the same center into multiple interlaced five-pointed star structures, and the vertices of all five-pointed star structures are located on the same circumference; the angle between adjacent five-pointed star structures is 36 degree. The glass fiber is a glass fiber uniformly impregnated with a resin adhesive. The resin adhesive is a mixture of 0.3 parts by weight of unsaturated polyester resin, 0.01 parts by weight of curing agent and 0.01 parts by weight of accelerator.

Example Embodiment

[0026] Example 3

[0027] A fiberglass high-strength composite reinforcing rib, which is composed of glass fibers wound at the same center into multiple interlaced five-pointed star structures, and the vertices of all five-pointed star structures are located on the same circumference; the angle between adjacent five-pointed star structures is 36 degree. The glass fiber is a glass fiber uniformly impregnated with a resin adhesive. The resin adhesive is mixed with 0.5 parts by weight of unsaturated polyester resin, 0.02 parts by weight of curing agent and 0.02 parts by weight of accelerator.

[0028] The glass fiber of Examples 1-3 is twisted into a rope structure by multiple strands of E-grade alkali-free non-twisted glass fiber, the curing agent is cyclohexanone peroxide; the accelerator is cobalt naphthenate. Unsaturated polyester resin can choose HR-8309 heat-resistant unsaturated polyester resin produced by Changzhou China Resources Composite Materials Co., Ltd.

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Abstract

The invention discloses a glass fiber-reinforced plastic high-strength composite strengthening rib and a production technology thereof. The glass fiber-reinforced plastic high-strength composite strengthening rib comprises glass fibers. The glass fibers are winded with each other to form a staggered structure. The glass fibers are uniformly immersed through a resin adhesive. The resin adhesive is prepared from 0.1-0.5 parts by weight of unsaturated polyester resin, 0.005-0.02 parts by weight of a curing agent and 0.005-0.02 parts by weight of a promoter by mixing. The glass fiber-reinforced plastic high-strength composite strengthening rib and a resin base material are prepared from the same material and the glass fiber-reinforced plastic high-strength composite strengthening rib and the resin base material are fused at a high temperature under high pressure so that glass fiber-reinforced plastic well cover integrity is good. The glass fiber-reinforced plastic high-strength composite strengthening rib has good toughness and a high bending amount, produces deformation under high pressure and can be recovered after pressure release. The glass fiber-reinforced plastic high-strength composite strengthening rib is prepared from a non-metal and has no recovery and use value so that well cover pilferage is thoroughly prevented.

Description

technical field [0001] The invention relates to the field of municipal manhole covers, in particular to a fiberglass high-strength composite reinforcing rib used for a manhole cover made of glass fiber reinforced plastics. Background technique [0002] FRP manhole covers are mainly divided into BMC FRP manhole covers and FRP SMC FRP manhole covers. At present, it has gradually replaced cement manhole covers and cast iron manhole covers because of its unique characteristics. Most of the internal structures of FRP manhole covers in the prior art are reinforced with steel bars as reinforcing ribs. This method mainly has the following disadvantages: 1. Steel bars and FRP are two different materials, and the combination between the two is poor, and the steel bars and resin base materials are easy to delaminate; 2. The bending of the steel bars is poor, and the deformation under heavy pressure cannot be achieved. Restoration; 3. The steel bars are easy to oxidize and rust, which...

Claims

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Application Information

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IPC IPC(8): B29C70/32B29C70/54E02D29/14C08K9/04C08K7/14
CPCB29C70/32B29C70/54C08K7/14C08K9/04E02D29/14
Inventor 许孝文
Owner 东营市天诚建材有限公司
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