CN1962970A

CN1962970A - Continuous long fiber FRP

Info

Publication number: CN1962970A
Application number: CN 200510100934
Authority: CN
Inventors: 霍超; 汤惠工; 何唯平
Original assignee: Shenzhen Oceanpower Industrial Co Ltd
Current assignee: Shenzhen Oceanpower Industrial Co Ltd; Ocean Power Corp
Priority date: 2005-11-08
Filing date: 2005-11-08
Publication date: 2007-05-16

Abstract

The invention discloses a long fiber FRP made by staple fiber fortifying and continuing. It is prepared by: adding staple fiber into resin and stirring until uniform, then producing the long fiber FER according the original process. The mass ratio of staple fiber adding in resin is 1%-8%, the length is 2mm-6mm and the diameter is 8um-15um. Said staple fiber is one of glass fibers, basaltic fiber, aramid fiber and carbon fiber, or two or more staple fibers mixed. The strength for extension of the long fiber FER can be improved 0.05~0.18 times contrasting regular continue long fiber FRP, the compression strength, the shear strength and the bending strength can be improved 0.1 ~ 0.25 times. The invention also can raise the high temperature-resistance and crack resistance of FER and lower cure shrinkage, the cost dose not increase shapely.

Description

A kind of continuous long fiber FRP

[technical field]

The present invention relates to the polymer matrix composites field, in particular continuous long fiber FRP.

[background technology]

Use now in more fiber-reinforced resin FRP (the Fiber Reinforced Polymer) product, be divided into: continuous long fiber FRP (using long-fiber-reinforced resin), staple fibre FRP (strengthening resin) two big classes with staple fibre from fortifying fibre length.Wherein continuous long fiber FRP has advantages of higher tensile strength, and shear strength is smaller; The compression strength of staple fibre FRP is relative with shear strength higher, tensile strength lower (comparing with continuous long fiber FRP).

For improving the overall performance of FRP material, the advantages of two kinds of FRP is got up, the special staple fibre that proposes mixes the notion that strengthens long fiber FRP.

Because staple fibre the arranging of three probabilities such as direction in resin can be greatly improved the intensity of the three-dimensional that makes composite (comparing with long fiber FRP).

[summary of the invention]

The invention provides a kind of improved continuous long fiber FRP, the tensile strength of this improved continuous long fiber FRP material, compression strength, bending strength, shear strength are compared all with common FRP material and are greatly improved.

A kind of staple fibre strengthens continuous long fiber FRP, behind the interpolation staple fibre, is stirred to evenly in resin, makes by original explained hereafter continuous long fiber FRP again.The mass ratio that staple fibre adds in resin is 1%～8%, and length is 2mm～6mm, and diameter is 8um～15um.

Above-mentioned staple fibre is one of glass fibre, basalt fibre, aramid fiber or carbon fiber, or the mixing of two or more staple fibre.

Compare with common continuous long fiber FRP, the tensile strength that staple fibre of the present invention strengthens continuous long fiber FRP can improve 0.05～0.18 times, compression strength, shear strength, bending strength can improve 0.1～0.25 times, can also improve temperature tolerance, the crack resistance of FRP, reduce cure shrinkage, and on cost, significantly do not increase.

[specific embodiment]

Embodiment 1:

Continuous glass fibre FRP, adding quality during making in resin is 1% than content, length is 4mm, diameter is the basalt fibre of 8um, stirs, then according to normal process production, its tensile strength improves 7%, compression strength improves 11%, and bending strength improves 12%, and shear strength improves 10%.

Embodiment 2:

Continuous glass fibre FRP, adding quality during making in resin is 4% than content, length is 5mm, diameter is the carbon fiber of 13um, stirs, then according to normal process production, its tensile strength improves 10%, compression strength improves 15%, and bending strength improves 16%, and shear strength improves 14%.

Embodiment 3:

Continuous carbon fibre FRP, adding quality during making in resin is 5% than content, length is 2mm, diameter is the glass fibre of 10um, stirs, then according to normal process production, its tensile strength 8%, improve compression strength and improve 13%, bending strength improves 14%, and shear strength improves 12%.

Embodiment 4:

Continuous basalt fiber FRP, adding quality during making in resin is 6% than content, length is 5mm, diameter is the aramid fiber of 15um, stirs, then according to normal process production, its tensile strength improves 11%, compression strength improves 20%, and bending strength improves 23%, and shear strength improves 18%.

Embodiment 5:

Continuous glass fibre FRP, adding quality during making in resin is 8% than content, length is 6mm, and diameter is 13um, and mass ratio is 1: 1 glass fibre and a basalt fibre blended fiber, stir, according to normal process production, its tensile strength improves 13% then, and compression strength improves 22%, bending strength improves 24%, and shear strength improves 20%.

Claims

1, a kind of staple fibre strengthens continuous long fiber FRP, behind the interpolation staple fibre, is stirred to evenly in resin, make by original explained hereafter continuous long fiber FRP again, it is characterized in that: the mass ratio that staple fibre adds in resin is 1%～8%, and length is 2mm～6mm, and diameter is 8um～15um.

2, staple fibre according to claim 1 strengthens continuous long fiber FRP, and it is characterized in that: staple fibre is one of glass fibre, basalt fibre, aramid fiber or carbon fiber, or the mixing of two or more staple fibre.