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 basal

Method used

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  • Basalt fiber prepreg and preparation method thereof

Examples

Experimental program
Comparison scheme
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Example Embodiment

[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 the steps: 1) Place the epoxy resin matrix in a mixer to fully mix; 2) After the mixture obtained in step 1) is heated to 80°C, it is transported to the glue roller, and the distance and separation of the glue roller are adjusted. The running speed of the moulded paper can produce different thicknesses of the film; 3) The thickness of the film or the areal density of the film is detected by an infrared meter, and the temperature of the film is reduced by the cooling plate to reduce its curing degree; 4) Rewinding , Package, store in the cold storage for later use.

[0038] Pre-impregnation includes the steps: 1) draw out the fiber from the creel, and after adjusting the tension, bundling and flattening procedures, to reach the specified width; 2) draw the pre-made film from the upper and lower film ro...

Example Embodiment

[0041] Example 1

[0042] The epoxy resin is composed of components in the following weight ratios:

[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) Put ATN series epoxy resin, E-51, E-44 and E-20 epoxy resin into an oven at 110°C for preheating 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 fixed amount of curing agent and accelerator into the noodle machine to pre-mix, stir for 25 minutes, and make the curing agent and accelerator resin paste respectively;

[0046] 3) Grind 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 defoam i...

Example Embodiment

[0050] Example 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) Put ATN series epoxy resin, E-51, E-44 and E-20 epoxy resin into an oven at 120°C for preheating for 8 hours to remove moisture and small volatile matter in the resin;

[0054] 2) Weigh a small amount of liquid epoxy resin and a fixed amount of curing agent and accelerator into the noodle machine to pre-mix, stir for 30 minutes, and make the curing agent and accelerator resin paste respectively;

[0055] 3) Grind 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 reactor and stir, and defoam in vacuum, whil...

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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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