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Photocuring composition, coating and preparation method thereof, carbon fiber prepreg and preparation method thereof, and fiber composite material

A composition and light-curing technology, applied in the field of fiber composite materials, can solve the problems of easy hydrolysis and high activity, and achieve the effect of maintaining low viscosity, excellent operability, and ensuring stability

Pending Publication Date: 2022-05-17
CHANGZHOU TRONLY ADVANCED ELECTRONICS MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to provide a kind of photocuring composition, coating and its preparation method, carbon fiber prepreg and its preparation method and fiber composite material, to solve the easy hydrolysis of ternary epoxy photocuring system in the prior art, active too high problem

Method used

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  • Photocuring composition, coating and preparation method thereof, carbon fiber prepreg and preparation method thereof, and fiber composite material
  • Photocuring composition, coating and preparation method thereof, carbon fiber prepreg and preparation method thereof, and fiber composite material
  • Photocuring composition, coating and preparation method thereof, carbon fiber prepreg and preparation method thereof, and fiber composite material

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preparation example Construction

[0055] In yet another typical embodiment of the present application, a method for preparing any of the above-mentioned coatings is provided, including: step S1, under ultraviolet light irradiation, the monomer and cationic photoinitiator in the photocuring composition Mixing to form a photoinitiating solution; step S2, mixing the photosensitive resin in the photocuring composition with the photoinitiating solution at a temperature below 20°C to obtain a system to be cured. When the coating also includes additives, the additives are added in step S2 .

[0056] When mixing the monomer and the cationic initiator, use ultraviolet light to irradiate the cationic initiator to initiate the formation of an intermediate; It can ensure the uniform mixing of the resin and the photoinitiating solution, and can avoid the polymerization of the photosensitive resin, thereby forming a system to be cured with low viscosity and excellent wettability, which is conducive to large-area roll coatin...

Embodiment 11

[0084] The viscosity of component 60g is 1-bis(3-ethyloxetanyl-3-methoxy)methanol-butyl ether (A), 5g bis(4-tert-butylphenyl)iodonium hexa Fluorophosphate (B) mixed evenly, stirred under mercury lamp (100mv / cm 2 , 2min), then add 35g of bisphenol A epoxy resin (C) at 0°C (temperature 1) to form a system to be cured, with a viscosity of 783cps, stir evenly, and let it stand for use. Put the dried carbon fiber woven cloth layup (10cm*50cm, 10 layers) into a vacuum bag and place it in a molding mold at a temperature of 15°C (temperature 2), and depressurize it to -0.1MPa by a vacuum pump, and put the above-mentioned to-be-cured The system is injected into a vacuum bag at 0.2MPa to form a fiber prepreg.

[0085] After the injection was completed, the temperature of the mold was raised to 30° C. (temperature 3), and demoulding was carried out after 5 minutes to obtain a carbon fiber composite laminate with a carbon fiber woven cloth volume content Vf of 45%.

[0086] By changing ...

Embodiment 21

[0093] The difference from Example 1 is that the component B content is 1.9 g.

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Abstract

The invention provides a photocuring composition, a coating and a preparation method thereof, a carbon fiber prepreg and a preparation method thereof, and a fiber composite material. The photocuring composition comprises a monomer, a cationic photoinitiator and photosensitive resin, the monomer is an oxetane monomer, the structural formula of the oxetane monomer is shown in the specification, R1 is C1-C5 alkyl, R2 is any one selected from halogen, hydroxyl, C1-C40 linear alkyl or C3-C40 branched alkyl and C1-C40 alkenyl, and R3 is any one selected from halogen, hydroxyl, C1-C40 linear alkyl or C3-C40 branched alkyl and C1-C40 alkenyl. And carbon or hydrogen in the linear alkyl group, the branched alkyl group and the alkenyl group can be substituted by one or more ether bonds, carbon groups, phenyl groups, substituted phenyl groups or substituted phenyl groups. According to the present invention, by using the characteristics of photo-initiation ring opening and low activity compared to the ternary epoxy of the oxetane monomer, the stability of the system after photo-initiation is effectively ensured, the low viscosity can be maintained during injection while the wettability is excellent, and the curing time can be shortened during molding;

Description

technical field [0001] The invention relates to the technical field of light-curing materials, in particular to a light-curing composition, a coating and a preparation method thereof, a carbon fiber prepreg and a preparation method thereof, and a fiber composite material. Background technique [0002] Epoxy compounds are oligomers used as cationic light-curing coatings. Under the action of super-strong protonic acid or Lewis acid, cationic polymerization is easy to occur. The commonly used tertiary epoxy compounds have high activity and are widely used. The ternary epoxy itself has low toxicity, but it is easy to hydrolyze during use. Some people who come into contact with ternary epoxy compounds can cause symptoms such as irritation of the upper respiratory tract and eyes, contact dermatitis, and allergic dermatitis. Therefore, to a certain extent The popularization of cationic formula is limited. [0003] Due to the advantages of low viscosity and small curing shrinkage, ...

Claims

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Application Information

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IPC IPC(8): C08L63/02C08K7/06C09D163/02C09D7/61G03F7/004G03F7/027
CPCG03F7/004G03F7/027C08K7/06C09D163/00C09D7/61C08K3/34C08L63/00C08J5/24C09D7/00
Inventor 钱晓春张学龙于培培
Owner CHANGZHOU TRONLY ADVANCED ELECTRONICS MATERIALS CO LTD
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