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Phenolic glass reinforced plastic grille

A glass fiber reinforced plastic and grid technology, applied in building elements, slender elements, etc., can solve the problems of poor high temperature ablation resistance, unfavorable widespread promotion, high price of high-strength glass fiber, and achieve the effect of cost reduction

Inactive Publication Date: 2010-02-17
CHINAGRATE COMPOSITES STRUCTURE NANTONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The glass fiber used as a reinforcing material in the phenolic pultruded FRP grating is generally an ordinary alkali-free glass fiber, but such a phenolic pultruded FRP grating has poor high temperature ablation resistance
The patent ZL200410014813.2 discloses a phenolic FRP grating, in which high-strength glass fiber is added to the reinforcing material, and the high-strength glass fiber has a high softening point, thereby improving the ablation resistance of the phenolic pultruded FRP grating. Obtained USCG Level 2 certificate. However, the price of high-strength glass fiber is relatively high, which increases the production cost of phenolic FRP grating, which is not conducive to the wide promotion of the product in the market

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A pultruded phenolic fiberglass grating is given. The specification is that the height of the I-beam is 38.1mm, and the distance between the centers of adjacent I-beams is 38.1mm. The phenolic resin is used as the matrix, and ordinary alkali-free glass fiber yarn is used, and then phenolic resin is used. 5% to 30% of the resin weight is 1-10 micron aluminum hydroxide as a filler, and the temperature of the pultrusion die is set at 220°C to 250°C. After the product is ablated at a high temperature of 927°C, its residual fracture strength is about 5.02kN / m when the span is 1120mm 2 , passed the USCG Level 2 certificate test.

Embodiment 2

[0014] A pultruded phenolic fiberglass grating is given. The specification is that the height of the I-beam is 50.8mm, and the distance between the centers of adjacent I-beams is 38.1mm. The phenolic resin is used as the matrix, and the ordinary alkali-free glass fiber yarn is used, and then phenolic resin is used. 5% to 30% of the resin weight is 1-10 micron aluminum hydroxide as a filler, and the temperature of the pultrusion die is set at 220°C to 250°C. After the product is ablated at a high temperature of 927°C, its residual fracture strength is about 10.11kN / m at a span of 1120mm 2 , passed the USCG Level 2 certificate test.

[0015] The above two pultruded phenolic FRP gratings have passed the experimental verification, and have also passed the USCG Level 2 standard certification (USCG Level 2).

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Abstract

The invention discloses a phenolic glass reinforced plastic grille which is formed by pulling and extruding ordinary alkali-free glass fiber yarns, a continuous glass fiber mat and phenolic resin andusing 1-10 microns aluminum hydroxide as a filler, wherein the temperature of a pulling and extruding mould is set to be 220-250 DEG C, and the weight ratio of the aluminum hydroxide to the phenolic resin is 0.05-0.3:1. The invention has the advantages that production raw materials have low price and easy to obtain; the price of the ordinary alkali-free glass fiber yarns is 1 / 5-1 / 15 of that of high-strength glass fiber yarns, thereby reducing the cost greatly and obtaining products with stronger competitive power; and the phenolic glass reinforced plastic grille has the property of 927 DEG C high-temperature ablation resistance. The invention passes USCG authentication of level 2 (USCG Level 2) of America.

Description

Technical field: [0001] The invention belongs to the field of composite materials, in particular to a phenolic pultruded fiberglass grid. Background technique: [0002] FRP grating, also known as fiber-reinforced plastic (FRP) grating, is made of resin as the matrix material and glass fiber as the reinforcing material, and is compounded and assembled through certain molding methods. According to the different matrix materials, namely the resin, it can be divided into unsaturated resin FRP grating, vinyl FRP grating and phenolic FRP grating, etc.; according to the different molding methods, it can be divided into molded FRP grating and pultruded FRP grating. grille. The molded FRP grating is made of glass fiber interlaced weaving, resin casting and molding, and has excellent corrosion resistance; the pultruded grating is made of continuous fibers impregnated with resin, pultruded and cured by heating, continuous molding and then assembled , with higher strength. [0003] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08K7/14C08K3/22B29C70/52B29C70/54F16S3/08
Inventor 赵沭通谢汉宪
Owner CHINAGRATE COMPOSITES STRUCTURE NANTONG
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