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Carbon fiber reinforced vinyl ester resin SMC (Sheet Molding Compound) prepreg as well as preparation method and use method thereof

A vinyl ester resin and carbon fiber technology, which is applied in the field of high-performance SMC preparation for the automotive industry, can solve the problem that the processing performance of glass fiber reinforced sheet molding compound cannot meet the needs of the automotive industry, and achieve short thickening time, short curing time, The effect of long storage time

Active Publication Date: 2017-05-31
常州融信复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention will solve the problem that the processability of the existing glass fiber reinforced sheet molding compound cannot meet the needs of the automotive industry, and provide a carbon fiber reinforced vinyl ester resin SMC prepreg and its preparation method and use method

Method used

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  • Carbon fiber reinforced vinyl ester resin SMC (Sheet Molding Compound) prepreg as well as preparation method and use method thereof

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specific Embodiment approach 1

[0015] Specific embodiment one: this embodiment is a kind of carbon fiber reinforced vinyl ester resin SMC prepreg from top to bottom successively is upper film layer, core layer and lower film layer; The material of described upper film layer and lower layer film is the same, Both are polyethylene films or polyester films; the core layer consists of 100 parts by weight of vinyl ester resin, 20-50 parts of low shrinkage additives, 60-180 parts of chopped carbon fiber, and 1-2 parts of A-type thickening agent, 2-25 parts of B-type thickener, 0.8-1.2 parts of high-temperature curing agent, 0.2-0.4 parts of low-temperature curing agent, 0.05-0.1 part of polymerization inhibitor and 1-2 parts of internal mold release agent.

[0016] Carbon fiber reinforced sheet molding compound has gradually become a research hotspot. The main reason why carbon fiber sheet molding compound has not been widely developed and utilized is the high price of carbon fiber. The year-by-year decline in t...

specific Embodiment approach 2

[0018] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the vinyl ester resin is a thickening type vinyl ester resin. Others are the same as the first embodiment.

specific Embodiment approach 3

[0019] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the low-shrinkage additive is a thermoplastic polymer or a block copolymer, specifically polyvinyl acetate, polymethyl methacrylate, One or a mixture of polyurethane, polystyrene and styrene-butadiene-styrene block copolymer. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses carbon fiber reinforced vinyl ester resin SMC (Sheet Molding Compound) prepreg as well as a preparation method and a use method thereof, relates to a short-cut carbon fiber reinforced vinyl ester resin SMC as well as a preparation method and a use method thereof, and aims to solve the problem that processing properties of a conventional glass fiber reinforced sheet molding compound) cannot meet requirements of the automobile industry. The carbon fiber reinforced vinyl ester resin SMC prepreg comprises an upper membrane layer, a core layer and a lower membrane layer from top to bottom in sequence. The preparation method comprises the following steps: I, weighing materials; II, preparing resin paste; III, repeatedly rolling the resin paste by using a pressure roller so as to obtain resin-dipped short-cut carbon fiber; IV, performing thickening and aging, thereby obtaining the carbon fiber reinforced vinyl ester resin SMC prepreg. The use method comprises the following steps: cutting and overlapping the carbon fiber reinforced vinyl ester resin SMC prepreg in a mold, and performing pressure-keeping curing, thereby obtaining a carbon fiber SMC composite material. The carbon fiber reinforced vinyl ester resin SMC prepreg has the advantage that the impact resistance is remarkably improved. The carbon fiber SMC composite material prepared from the carbon fiber reinforced vinyl ester resin SMC prepreg is mainly used as an automobile material.

Description

technical field [0001] The invention belongs to the field of high-performance SMC preparation for the automobile industry, and in particular relates to a chopped carbon fiber reinforced SMC and a preparation method and usage method thereof. Background technique [0002] Sheet molding compound (SMC) compression molding is an advanced resin-based composite molding method. The preparation method is to first thicken the thermosetting resin, reinforcing fiber and various additives to form a sheet-like premix with relatively high viscosity and stability, then cut the premix into a certain size and lay it on the mold Molded in. The preparation method of the composite material has short molding cycle, low production cost, good working environment, basically no waste of leftover materials, and excellent properties of the product. So once it came out, it was favored by the fields of automobile, medical and health, sporting goods, construction, chemical anticorrosion, electronics / ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/24C08L63/10C08L33/12C08K13/04C08K7/06C08K3/22C08K5/29C08K5/14C08K5/13C08K5/098
CPCC08J5/24C08J2363/10C08J2433/12C08L63/10C08L33/12C08K13/04C08K7/06C08K2003/222C08K5/29C08K5/14C08K5/13C08K5/098
Inventor 王荣国刘文博焦卫卫
Owner 常州融信复合材料有限公司
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