Continuously-directional glass fiber reinforcement unsaturated polyester sheet molding compound

A technology of sheet molding compound and glass fiber, which is applied in the field of composite materials, can solve the problems of not being able to meet the requirements for the use of electrical supports, and cannot achieve high flame retardancy and high strength characteristics, so as to expand the use range, improve the compactness and surface quality , Improve the effect of mechanical strength

Active Publication Date: 2010-04-21
ZHENSHI GRP HUAMEI NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the SMC sheets on the market cannot achieve high flame retardancy and high strength characteristics, and cannot meet the requirements for the use of load-bearing equipment such as electrical brackets.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The following section of this example describes the formulation of a continuously oriented glass fiber reinforced unsaturated polyester sheet molding compound:

[0022] The various components of the present embodiment and their mass parts are: 20 parts of o-phthalic resin; 7 parts of polystyrene; 15 parts of 25.4mm chopped glass fiber; 8 parts of continuous oriented glass fiber; 10 parts of calcium carbonate; 35 parts of mixed aluminum hydroxide of 25 μm and 2 μm, the mixing ratio is 4:1; 0.5 parts of TBPB; 2 parts of styrene; 0.5 parts of MgO; 1 part of zinc stearate, 0.03 parts of p-benzoquinone, Germany BYK The amount of BYK-996 produced was 0.97 parts.

[0023] The following sections of this example describe the process for making a continuously oriented glass fiber reinforced unsaturated polyester sheet molding compound:

[0024] The above-mentioned components must be strictly metered and fully mixed before being coated on the supporting film of the tablet machine...

Embodiment 2

[0032] The difference between this embodiment and embodiment 1 is:

[0033] The various components of the present embodiment and their mass parts are: 18 parts of m-benzene resin; 10 parts of polyvinyl acetate; 20 parts of 12.7mm chopped glass fiber; 5 parts of continuous oriented glass fiber; 32 parts of calcium carbonate; 10 parts of mixed aluminum hydroxide of 25 μm and 2 μm, the mixing ratio is 1:1; 0.5 parts of TBPB; 2.5 parts of styrene; 0.5 parts of MgO; 1 part of zinc stearate, BYK-996 produced by BYK, Germany The dosage is 0.5 parts.

[0034] Each component must be strictly measured and fully mixed in advance before being coated on the supporting film of the tablet machine, and then becomes a paste mixture (resin paste).

[0035] Its preparation method is identical with embodiment 1.

Embodiment 3

[0037] The difference between this embodiment and embodiment 1 is:

[0038] The components and parts by mass of the present embodiment are: 25 parts of o-phthalic resin; 25 parts of m-benzene resin; 8 parts of polyvinyl acetate; 18 parts of 12mm chopped glass fiber; 6 parts of continuous oriented glass fiber; calcium carbonate 40 parts; 45 parts of mixed aluminum hydroxide with a particle size of 25 μm and 2 μm, the mixing ratio is 2:1; 0.3 parts of TBPO; 4 parts of styrene; 0.9 parts of MgO; 2 parts of calcium stearate, 0.05 parts of p-benzoquinone parts, the dosage of BYK-972 produced by German BYK company is 1.5 parts.

[0039] Its preparation method is identical with embodiment 1.

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Abstract

The invention relates to the field of composite materials, in particular to a continuously-directional glass fiber reinforcement unsaturated polyester sheet molding compound. The continuously-directional glass fiber reinforcement unsaturated polyester sheet molding compound comprises the following components in part by weight: 15 to 50 parts of unsaturated polyester resin, 5 to 12 parts of low astringent, 8 to 20 parts of chopped glass fibers of 12 to 26 millimeters, 1.5 to 8 parts of directional continuous glass fibers, 10 to 50 parts of calcium carbonate, 10 to 50 parts of aluminum hydroxide, 0.2 to 1 part of organic peroxide, 1 to 4 parts of styrene, 0.2 to 1 part of thickening agent, and 1 to 3 parts of mold discharging agent. The continuously-directional glass fiber reinforcement unsaturated polyester sheet molding compound has the advantages of reasonable formula design, good flame retardance, high strength, low manufacturing cost and stable quality.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a continuously oriented glass fiber reinforced unsaturated polyester sheet molding compound. Background technique [0002] Glass fiber reinforced unsaturated polyester sheet molding compound (Sheet Molding Compound, referred to as SMC) Compound, referred to as SMC) is made of upper and lower plastic films wrapped with unsaturated polyester resin, chopped glass fibers, fillers and auxiliary materials. Sheet is a semi-finished product of a wide range of molded materials. It first appeared in Europe in the early 1960s, and around 1965, the United States and Japan successively developed this craft. In the late 1980s, my country introduced foreign advanced SMC material production lines and production processes. SMC composite materials have the characteristics of good electrical properties, chemical corrosion resistance, light weight, high strength, good fatigue resistance, low the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/06C08K13/04C08K7/14C08K3/22C08K3/26
Inventor 郑荣显盛江峰
Owner ZHENSHI GRP HUAMEI NEW MATERIALS
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