Method for rapidly preparing fiber enhanced resin-based composite material with photocuring

A fiber-reinforced resin and composite material technology, which is applied in the field of fiber-reinforced resin-based composite materials, can solve the problems of composite material type and shape restrictions, limit the thickness and size of molded products, and increase mold costs, etc., to achieve simple and convenient reactions, cost and performance. The effect of low power consumption and good mechanical properties

Inactive Publication Date: 2017-11-24
张艳雪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing photocuring process limits the material of the mold and the thickness of the molded product, which increases the cost of the mold. At the same time, in ord

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for rapidly preparing a fiber-reinforced resin-based composite material by photocuring, the specific steps are as follows:

[0021] Step 1, dispersing the carbon fiber and hypochlorite in absolute ethanol and vibrating with ultrasonic wave for 18 minutes to obtain the first mixture;

[0022] Step 2, the temperature of the first mixture is raised to 45 degrees Celsius and 3% carbon fiber weight peroxide is added, heated in a constant temperature water bath and magnetically stirred for 36 minutes, then heated to 78 degrees Celsius and kept for 3 hours, filtered, cooled to room temperature and dried, Obtain modified carbon fiber;

[0023] Step 3, irradiate the UV curable resin composition mixed with raw materials such as photoinitiator with ultraviolet light, and the resin composition is composed of the following raw materials in parts by weight: 68 parts of glycidyl ether epoxy resin, 0.3 part of photoinitiator, 0.7 parts of benzoin dimethyl ether and 7 parts of...

Embodiment 2

[0025] A method for rapidly preparing a fiber-reinforced resin-based composite material by photocuring, the specific steps are as follows:

[0026] Step 1, dispersing carbon fiber and hypochlorite in xylene and vibrating with ultrasonic waves for 19 minutes to obtain the first mixture;

[0027] Step 2, the temperature of the first mixture is raised to 50 degrees Celsius and 4% carbon fiber weight peroxide is added, heated in a constant temperature water bath and magnetically stirred for 42 minutes, then heated to 80 degrees Celsius for 3 hours, filtered, cooled to room temperature and dried, Obtain modified carbon fiber;

[0028] Step 3, irradiating the UV curable resin composition mixed with photoinitiator and other raw materials with ultraviolet light, the resin composition is composed of the following raw materials in parts by weight: 74 parts of glycidylamine epoxy resin, 0.5 part of photoinitiator, 0.9 parts of Michler's ketone and 12 parts of pigments, after initiating ...

Embodiment 3

[0030] A method for rapidly preparing a fiber-reinforced resin-based composite material by photocuring, the specific steps are as follows:

[0031] Step 1, dispersing the carbon fiber and hypochlorite in ethyl acetate and vibrating with ultrasonic waves for 22 minutes to obtain the first mixture;

[0032] Step 2, heating the first mixture to 55 degrees Celsius and adding peroxide, heating in a constant temperature water bath and magnetic stirring for 44 minutes, then raising the temperature to 82 degrees Celsius for 4 hours, filtering, cooling to normal temperature and drying to obtain modified carbon fibers;

[0033] Step 3, irradiate the UV-curable resin composition mixed with photoinitiator and other raw materials with ultraviolet light, and the resin composition is composed of the following raw materials in parts by weight: 76 parts of epoxy resin, 0.6 part of photoinitiator, and 1.2 parts of photosensitizer and 12 parts of additives, the epoxy resin adopts the mixture of ...

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Abstract

The invention discloses a method for rapidly preparing a fiber enhanced resin-based composite material with photocuring. The method comprises the following steps: a step 1, carbon fiber and hypochlorite are dispersed in a diluent; a step 2, peroxides are added into products in the step 1, heating in water bath and magnetic stirring are carried out, and modified carbon fiber is obtained; a step 3, a resin composition is irradiated with an ultraviolet lamp, the resin composition is introduced into a die with spread modified carbon fiber, a curing agent is added dropwisely, the materials are poured into a forming die, and after demoulding, a finished product is obtained. The resin composition comprises the following raw materials in parts by weight: 65-80 parts of epoxy resin, 0.2-0.6 parts of a photoinitiator, 0.5-1.2 parts of a photosensitizer, and 5-15 parts of an additive. The resin composition is irradiated by ultraviolet ray and produces active sites, the active sites are uniformly dispersed in the whole curing system, so that the whole lightproof system is uniformly cured, and the type, dimension and shape of the product are not limited.

Description

technical field [0001] The invention relates to the technical field of fiber-reinforced resin-based composite materials, in particular to a method for rapidly preparing fiber-reinforced resin-based composite materials by photocuring. Background technique [0002] Fiber-reinforced resin-based composite materials have the characteristics of light weight, high strength, strong designability, good fatigue resistance, and easy integration of multiple components, and have been widely used in modern industry. With the expansion of my country's carbon fiber scale production, after gradually meeting the needs of domestic aerospace and other high-precision fields, the application and development of carbon fiber in the industrial field has become an urgent problem to be solved in the complete industrial chain of carbon fiber and its composite materials. At present, the primary factor restricting the large-scale application of carbon fiber is the high price of carbon fiber, followed by ...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K9/02C08K7/06C08J5/24
CPCC08K9/02C08J5/24C08J2363/00C08J2463/00C08K7/06C08K2003/2227C08K2201/011C08L63/00C08L2205/025C08L2205/03C08K13/06C08K3/22C08K3/36
Inventor 张艳雪
Owner 张艳雪
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