BMC (Bulk Moulding Compound) material with weather resistance and preparation method of BMC material

A weather-resistant and weather-resistant technology, which is applied in the field of weather-resistant BMC materials and its preparation, can solve problems such as poor UV stability and hydrolysis stability, and achieve excellent acid and alkali resistance, excellent weather resistance, and excellent UV resistance. The effect of photooxidation

Inactive Publication Date: 2014-04-16
无锡新宏泰电器科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As BMC products are widely used in outdoor products, many performance defects

Method used

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  • BMC (Bulk Moulding Compound) material with weather resistance and preparation method of BMC material
  • BMC (Bulk Moulding Compound) material with weather resistance and preparation method of BMC material
  • BMC (Bulk Moulding Compound) material with weather resistance and preparation method of BMC material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] A weather-resistant BMC material, which is mainly prepared from the following raw materials according to the weight percentage of each component of the BMC material:

[0060]

[0061]

[0062] The weather-resistant unsaturated polyester resin has an HDT of 10°C and a viscosity of 1350 mPa·s; the low shrinkage additive is polystyrene with a number average molecular weight of 10,000 or more. The particle size of the filler calcium sulfate is 6-10 μm, and the particle size of the filler calcium silicate is 4-12 μm. The curing agent is tert-butyl peroxybenzoate with a purity of more than 98% and a 10-hour half-life temperature of 104°C. The release agent is calcium stearate powder, and the particle size of the calcium stearate powder is 150-250 mesh. The thickener is liquid magnesium oxide. The antioxidant is 2,6-di-tert-butyl-p-phenol. The auxiliary agent is BYK-W-996. The weather-resistant pigment is a color paste prepared by mixing and milling 10% weather-resistant colo...

Embodiment 2

[0069] A weather-resistant BMC material, which is mainly prepared from the following raw materials according to the weight percentage of each component of the BMC material:

[0070]

[0071] The weather-resistant unsaturated polyester resin has an HDT of 10°C and a viscosity of 1350 mPa·s; the low-shrinkage additive is polyethylene. The particle size of the filler calcium sulfate is 6-10 μm, and the particle size of the filler calcium silicate is 4-12 μm. The curing agent is tert-butyl peroxybenzoate with a purity of more than 98% and a 10-hour half-life temperature of 104°C. The release agent is calcium stearate powder, and the particle size of the calcium stearate powder is 150-250 mesh. The thickener is liquid magnesium oxide. The antioxidant is 2,6-di-tert-butyl-p-phenol. The auxiliary agent is BYK-W-996. The weather-resistant pigment is a color paste prepared by mixing and milling 10% weather-resistant color toner and 90% weather-resistant monomer-free unsaturated polyes...

Embodiment 3

[0078] A weather-resistant BMC material, which is mainly prepared from the following raw materials according to the weight percentage of each component of the BMC material:

[0079]

[0080]

[0081] The weather-resistant unsaturated polyester resin has an HDT of 10°C and a viscosity of 1350 mPa·s; the low shrinkage additive is polystyrene with a number average molecular weight of 10,000 or more. The particle size of the filler calcium sulfate is 6-10 μm, and the particle size of the filler calcium silicate is 4-12 μm. The curing agent is tert-butyl peroxybenzoate with a purity of more than 98% and a 10-hour half-life temperature of 104°C. The release agent is calcium stearate powder, and the particle size of the calcium stearate powder is 150-250 mesh. The thickener is liquid magnesium oxide. The antioxidant is 2,6-di-tert-butyl-p-phenol. The auxiliary agent is BYK-W-996. The weather-resistant pigment is a color paste prepared by mixing and milling 10% weather-resistant colo...

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Abstract

The invention discloses a BMC (Bulk Moulding Compound) material with weather resistance. The BMC material is prepared from the following main raw materials in percent by weight in the terms of the weight of the BMC material: 16-26 percent of weather-resisting unsaturated polyester resin, 4-10 percent of low-shrinkage additive, 30-60 percent of filler calcium sulfate, 10-20 percent of filler calcium silicate, 0.1-1 percent of curing agent, 0.8-2 percent of releasing agent, 0.2-0.4 percent of thickening agent, 0.1-0.5 percent of antioxidant, 0.5-1.0 percent of assistant, 2-4 percent of weather-resisting pigment, 0.1-0.5 percent of ultraviolet absorber and 12-25 percent of glass fiber, wherein the sum of the percents by weight of all raw materials of the BMC is 100 percent. The BMC material has excellent acid and alkali resistance, ultraviolet light oxidation resistance, hydrolysis resistance, high-low temperature resistance, and weather resistance.

Description

Technical field [0001] The invention relates to a BMC material, in particular to a BMC material with weather resistance and a preparation method thereof. Background technique [0002] Molding compound is BMC molding compound (bulk moulding compound), namely unsaturated polyester glass fiber reinforced molding compound, which is mainly composed of unsaturated polyester resin, low shrinkage additives, initiators, mineral fillers, chopped fibers, chemical thickening It is a kind of thermosetting material made by physical mixing of additives and related functional additives. It can be applied to compression, injection, transfer and other thermoforming processes. The products have high mechanical strength, high temperature resistance, smooth surface, flame retardant, and Features such as arc. Its excellent mechanical and electrical properties make it widely used in industries such as automobiles, construction, electrical appliances, and meters. Such as automobile engine noise shield...

Claims

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Application Information

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IPC IPC(8): C08L67/06C08L25/06C08L23/06C08L23/12C08K13/04C08K7/14C08K3/30C08K3/34
Inventor 赵敏海黄增琦冯伟祖夏宏伟陈佩娟
Owner 无锡新宏泰电器科技股份有限公司
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