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Basalt fiber prepreg and preparation method thereof

A technology of basalt fiber and prepreg, which is applied in the field of basalt fiber prepreg to achieve consistent thermal expansion and contraction coefficients, simple subsequent processing and molding, and good dispersion

Inactive Publication Date: 2014-12-10
SUZHOU SUYUE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, carbon fiber prepregs and aramid fiber prepregs are widely used, but there are few studies on basalt fiber prepregs. In order to make basalt fibers more widely used, it is necessary to prepare basalt fiber prepregs. Must do

Method used

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  • Basalt fiber prepreg and preparation method thereof

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preparation example Construction

[0037] The basalt fiber prepreg of the present invention is prepared by a two-step hot-melt method, and the preparation method includes film making and prepreg. Film making includes steps: 1) Put the epoxy resin matrix in a mixer and mix thoroughly; 2) After the mixture obtained in step 1) is heated to 80°C, it is transported to the glue rollers, and the distance and distance between the glue rollers are adjusted. The running line speed of the pattern paper is used to prepare the film with different thicknesses; 3) Use an infrared instrument to detect the thickness of the film or the surface density of the film, and reduce the temperature of the film through the cooling plate to reduce its curing degree; 4) Winding , Packed and stored in cold storage for later use.

[0038] Prepreg includes steps: 1) Lead out the fibers from the creel, and reach the specified width after adjusting the tension, gathering and flattening the yarn collecting plate; 2) Lead out the pre-fabricated f...

Embodiment 1

[0042] Described epoxy resin is made up of the component of following weight ratio:

[0043] ATN series epoxy resin: 7%; E-51: 23%; E-44: 10%; E-20: 31%; micronized dicyandiamide: 9%; urea accelerator: 2%; hydrated alumina : 17%; white carbon black thickener: 1%.

[0044] 1) Preheat ATN series epoxy resin, E-51, E-44 and E-20 epoxy resin in an oven at 110°C for 7 hours to remove moisture and small volatile substances in the resin;

[0045] 2) Weigh a small amount of liquid epoxy resin and a certain amount of curing agent and accelerator to pre-mix in a dough maker, stir for 25 minutes, and make resin pastes of curing agent and accelerator respectively;

[0046] 3) Grinding the resin paste prepared in step 2 on a three-roll mill for two to three times to obtain a curing agent and accelerator masterbatch with a smaller viscosity and a more uniform powder particle size;

[0047] 4) Put the preheated epoxy resin into the reaction kettle and stir, and vacuum defoaming, while cool...

Embodiment 2

[0051] The resin is composed of components in the following weight ratios:

[0052] ATN series epoxy resin: 5%; E-51: 21%; E-44: 11%; E-20: 34%; micronized dicyandiamide: 8%; urea accelerator: 2.5%; hydrated alumina : 17%; white carbon black thickener: 1.5%.

[0053] 1) Preheat ATN series epoxy resin, E-51, E-44 and E-20 epoxy resin in an oven at 120°C for 8 hours to remove moisture and small volatile substances in the resin;

[0054] 2) Weigh a small amount of liquid epoxy resin and a certain amount of curing agent and accelerator to pre-mix in a dough maker, stir for 30 minutes, and make resin pastes of curing agent and accelerator respectively;

[0055] 3) Grinding the resin paste prepared in step 2 on a three-roll mill for two to three times to obtain a curing agent and accelerator masterbatch with a smaller viscosity and a more uniform powder particle size;

[0056] 4) Put the preheated epoxy resin into the reaction kettle to stir, and vacuum defoaming, while cooling do...

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Abstract

The invention discloses a basalt fiber prepreg comprising basalt fiber, epoxy resin and release paper, wherein the epoxy resin is soaked into a basalt fiber layer; and the release paper is directly attached to the outer surface of the basalt fiber layer. In addition, the invention discloses a two-step hot melting preparation method of the basalt fiber prepreg, and the preparation method comprises the steps of film preparation and presoaking. The method disclosed by the invention is simple, and the prepared basalt fiber prepreg is favorably applied to the market field of composite materials such as plates, fishing poles and profiled bars. The basalt fiber and a product thereof have abnormally excellent performances on the following aspects of remarkable high temperature resistance and thermal shock resistance, relatively low heat conduction coefficient, high elasticity modulus and tensile strength, good chemical stability, relatively high sound absorption coefficient, favorable electric insulation and dielectric properties, relatively low moisture absorptivity and natural silicate intermiscibility.

Description

technical field [0001] The invention relates to a basalt fiber prepreg and a preparation method of the basalt fiber prepreg. Background technique [0002] Continuous basalt fiber (CBF) is a continuous fiber made of natural volcanic extrusive rocks, which are crushed and put into a melting furnace, melted at 1450 ° C to 1500 ° C, and made through a platinum-rhodium alloy drawing bushing. With CBF as reinforcement, various composite materials with excellent performance can be made, which can be widely used in fire protection, environmental protection, aerospace, military industry, vehicle and ship manufacturing, engineering plastics, construction and other military and civilian fields, so CBF is known as the 21st century new material. With the continuous improvement of foreign technology and the continuous development of new markets, basalt fiber is expected to become the fourth largest high-strength and high-modulus fiber after carbon fiber, aramid fiber and ultra-high molec...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K7/00C08K7/10C08K3/22C08K3/36
Inventor 俞小东
Owner SUZHOU SUYUE NEW MATERIAL
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