Carbon fiber and glass fiber hybrid-reinforced sheet moulding compound and manufacturing technology thereof

A technology of sheet molding compound and glass fiber, which is applied in the field of composite materials, can solve the problems of non-flowing, report and application of sheet molding compound reinforced by carbon fiber and glass fiber hybrid, and achieve low cost, material saving, and manufacturing The effect of low cost

Active Publication Date: 2012-06-20
青岛威奥时代智能装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current industry, when producing products, there are also methods of mixing carbon fiber prepregs and glass fiber prepregs between layers and within layers, that is, making a single prepreg first, and then laying up hybrid layers. However, this method is subject to The li

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific example 1

[0070] The carbon fiber and glass fiber hybrid reinforced sheet molding compound produced by the invention can mold products with complex 3D shapes such as reinforcing ribs, bolt holes, side holes, and embedded metal parts.

[0071]At present, the valve cover of diesel engine is mostly made of alkali-free and twist-free glass fiber sheet molding material. In order to ensure the strength, the fiber content is more than 32%, the wall thickness of the assembly surface is 12MM, the rest part is more than 4MM, and the weight is about 7Kg. Product material It is required that after 1080 hours of oil resistance test in 150 ℃ oil, the material properties should not decay by more than 10%, and there will be no deformation, no cracking, no bubbles, and no corrosion. This technical solution is implemented as follows:

[0072] Step 1: Ingredients

[0073] 1) Preparation of resin paste I: Weigh 85.00kg of vinyl epoxy resin, 15.00kg of low shrinkage resin, 1.50kg of curing agent CH-335, 0....

specific example 2

[0087] The sheet molding compound produced by the invention, which is mixed with carbon fiber and glass fiber, can be used for automobile parts, small fan blades and other products.

[0088] Step 1: Ingredients

[0089] 1) Preparation of resin paste I: Weigh 75.00kg vinyl epoxy resin, 25.00kg low shrinkage resin, 1.30kg curing agent CH-335, 0.60kg polymerization inhibitor MODE, 3.0kg crosslinking agent styrene, 1.0kg Anti-phase separation agent BYK-972, 2.0kg internal mold release agent BYK-9065, 1.80kg coupling agent KH-580, 1.5kg zinc stearate and 12.0kg polyethylene powder were added to the first stirring tank, and the stirring speed was 800-1200r / min, the temperature is controlled at 38℃, after stirring for 10 minutes, vacuumize 0,08, after vacuum stirring for 5 minutes, stop stirring, and control the viscosity at 6000-10000cps. Prepare resin paste I for use;

[0090] 2) Preparation of resin paste II: Weigh 65.00kg vinyl epoxy resin, 35.00kg low shrinkage resin, 1.25kg cu...

specific example 3

[0102] The sheet molding compound produced by the present invention mixed with carbon fiber and glass fiber can be used for products such as rail transit components.

[0103] Step 1: Ingredients

[0104] 1) Preparation of resin paste I: Weigh 90.00kg of vinyl epoxy resin, 10.00kg of low shrinkage resin, 1.50kg of curing agent CH-335, 1.0kg of polymerization inhibitor MODE, 3.0kg of cross-linking agent styrene, 1.2kg of anti- Phase separation agent BYK-972, 2.0kg internal release agent BYK-9065, 2.20kg coupling agent KH-580, 1.6kg zinc stearate and 8.0kg polyethylene powder were added to the first stirring tank, and the stirring speed was 800 -1200r / min, the temperature is controlled at 38 ℃, after stirring for 10 minutes, vacuumize 0,08, after vacuum stirring for 5 minutes, stop stirring, and control the viscosity at 6000-10000cps. Prepare resin paste I for use;

[0105] 2) Preparation of resin paste II: Weigh 62.00kg vinyl epoxy resin, 38.00kg low shrinkage resin, 1.20kg cur...

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Abstract

The invention provides a carbon fiber and glass fiber hybrid-reinforced sheet moulding compound and is characterized in that the sheet moulding compound mainly comprises resin paste I, resin paste II and thickening agent; the manufacturing technology of the sheet moulding compound comprises the following steps: the preparation of the resin paste I, the resin paste II and the thickening agent; the mixing of the resin paste I and the thickening agent and that of the resin paste II and the thickening agent; and impregnation: the resin paste I and chopped carbon fiber, and the resin paste II and chopped glass fiber are impregnated on an SMC (Sheet Molding Compound) machine set respectively, the impregnated chopped glass fiber is uniformly placed on the impregnated chopped carbon fiber, and then the impregnated chopped glass fiber and the impregnated chopped carbon fiber are composited by pressure through a compacting machine to manufacture a carbon fiber and glass fiber hybrid sheet material which is wound or packaged in a box through the compacting machine and then is subject to slaking treatment; and after the slaking treatment, the carbon fiber and glass fiber hybrid sheet material is made into a finished sheet moulding compound product through mould pressing. The sheet moulding compound has a low cost and a low manufacturing cost, can meet requirements for utilization, is suitable for industrial production and is simple and applicable.

Description

technical field [0001] The invention relates to a composite material, which is a sheet-shaped molding compound reinforced by mixing carbon fiber and glass fiber and a production process thereof. Background technique [0002] Reinforcing fiber is the most important part of composite material, its function is to make the composite material have certain physical strength and toughness, so that the material can withstand mechanical effects such as stretching, shearing, and impact. Although carbon fiber composite materials have the advantages of high elastic modulus, high heat resistance, and low density, carbon fiber is not only expensive, but also the processing cost of carbon fiber composite materials is high. Although alkali-free and untwisted glass fiber has the characteristics of good dispersibility, good clustering, good cutting ability, good impregnation, and low price, its performance is far inferior to carbon fiber composite materials. Therefore, choosing several kinds...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L67/06C08L23/06C08K13/04C08K7/06C08K7/14C08K3/22C08K3/26C08K5/098C08K5/14C08F291/00C08J5/04B29C70/50
Inventor 金柏青
Owner 青岛威奥时代智能装备有限公司
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