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Transparent epoxy resin matrix for pultrusion and preparation method thereof

A technology of transparent epoxy resin and pultrusion molding, which is applied in the field of resin matrix for composite material pultrusion molding, can solve the problems of inability to monitor composite materials in real time, unclear surface diagram of sheet material, poor transparency of resin matrix, etc. Good glass transition temperature, alleviating discoloration, good weather resistance

Pending Publication Date: 2022-04-08
山东奥卓新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In summary, the resin matrix used in pultrusion molding in the prior art has the problem of poor transparency, which makes the graphics on the surface of the formed sheet unclear when molding decorative sheets with patterns and patterns, and cannot Real-time monitoring of internal defects in composite materials during the molding process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0047] A kind of preparation method of transparent epoxy resin substrate for pultrusion molding of the present invention, the steps of this method are:

[0048] Stir and mix the acid anhydride curing agent, antioxidant, light stabilizer, toughener and accelerator at a temperature of 70-90°C to obtain a mixture, and then lower the temperature of the obtained mixture to room temperature before adding the The main body of the resin is continuously stirred and mixed evenly to obtain a transparent epoxy resin matrix for pultrusion.

[0049] A pultruded composite material, the pultruded composite material is composed of a transparent epoxy resin matrix and a reinforcement according to the present invention, the reinforcement is high-strength glass fiber, and the type of high-strength glass fiber is preferably TMII468GS-2400.

[0050]A method for preparing a pultrusion composite material according to the present invention, the steps of the method are: using pultrusion equipment to co...

Embodiment 1

[0056] A kind of transparent epoxy resin substrate for pultrusion molding, the raw material of this transparent epoxy resin substrate consists of 60 parts of bisphenol A type epoxy resin, 40 parts of bisphenol F type epoxy resin, methyl hexahydrophthalic anhydride 85 parts, 0.5 part of trinonylphenyl phosphite antioxidant, 1 part of light stabilizer of Chimassorb944, 9 parts of toughening agent and 4 parts of triphenylethylphosphine bromide accelerator produced by BASF manufacturer;

[0057] The toughening agent is an isocyanate-modified epoxy resin, the grade of the epoxy resin is E-44, the epoxy value is 0.44, the isocyanate is a prepolymer of PTMG1000 and MDI, and the NCO content is 5.5%; The preparation method of the toughening agent is as follows: heat 94g of modified epoxy resin to 80°C in an oil bath, add 6g of isocyanate while stirring, and continue stirring for 60min, then add dibutyltin dilaurate, dibutyltin dilaurate, The quality of dibutyltin laurate is the 500ppm ...

Embodiment 2

[0067] A transparent epoxy resin matrix for pultrusion, the raw materials of the transparent epoxy resin matrix are 60 parts of hydrogenated bisphenol A type epoxy resin, 40 parts of glycidyl hexahydrophthalate, 40 parts of methylhexahydrophthalate 80 parts of diformic anhydride, 5 parts of hexahydrophthalic anhydride, 0.5 part of trinonylphenyl phosphite antioxidant, 1 part of light stabilizer Chimassorb944 produced by BASF manufacturer, 8 parts of toughening agent, benzyl 3 parts of triethylammonium chloride accelerator;

[0068] The toughening agent is an isocyanate-modified epoxy resin, the grade of the epoxy resin is E-44, the epoxy value is 0.44, the isocyanate is a prepolymer of PTMG1000 and MDI, and the mass content of the NCO group is 6.5%. The preparation method of the toughening agent is as follows: 94g epoxy resin is heated to 80°C in an oil bath, and 6g isocyanate is added under the condition of stirring, and the stirring is continued for 60min, then dibutyltin di...

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Abstract

The invention relates to a transparent epoxy resin matrix for pultrusion and a preparation method thereof, and belongs to the technical field of resin matrixes for pultrusion of composite materials, a flexibilizer used in the raw material composition of the transparent epoxy resin matrix has good compatibility with the resin matrix, does not split phase after a cross-linking curing reaction and is uniformly dispersed in a nano size, and the light transmittance of the resin is not influenced; after the in-situ curing split-phase toughening agent is cured, a nanoscale elastomer micro-area can be formed, the size is small, the nanoscale elastomer micro-area is matched with an epoxy resin matrix, and transparency is not affected. The device is mainly used for processing and manufacturing pultrusion decorative plates and profiles with patterns or figures, meanwhile, pultrusion products are visual, and existing defects can be visually checked.

Description

technical field [0001] The invention relates to a transparent epoxy resin matrix for pultrusion molding and a preparation method thereof, which belongs to the technical field of resin matrix for pultrusion molding of composite materials, and is mainly used for the processing and manufacture of pultrusion molding decorative plates and profiles with patterns or patterns , At the same time, the pultruded product is "visualized", and the existing defects can be visually inspected. Background technique [0002] The pultrusion of composite materials refers to the process of producing composite material profiles by heating continuous fibers or fabrics impregnated with resin through a mold to cure the resin under the action of traction equipment. This method has attracted much attention due to its advantages of controllable fiber content, high raw material utilization, high and stable production efficiency, strong designability, and high degree of automation. It has a wide range of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/02C08L75/08C08J5/04C08K7/14
Inventor 张旭锋吴敬朋张旭东夏义兵冯笑肖杰施成旺甄茂民
Owner 山东奥卓新材料有限公司