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Efficient heat-preservation SMC sheet molding compound and preparation method thereof

A sheet molding compound, high-efficiency technology, applied in sustainable manufacturing/processing, chemical industry, climate sustainability, etc., can solve problems such as insufficient thermal insulation and protection structure, inability to use car shells, high energy consumption for cooling and heating, etc. Achieve the effect of small product shrinkage, reduced thermal conductivity, and guaranteed strength

Pending Publication Date: 2020-11-13
广东百汇达新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The energy consumption of automobile cooling and heating is relatively large, and the main reason for this phenomenon is that the insulation protection structure is not in place
In recent years, many researchers have also devoted themselves to the research of automobile thermal insulation and protective structures. However, due to the low strength of traditional thermal insulation materials, they cannot be directly used for the use of automobile shells. big space

Method used

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  • Efficient heat-preservation SMC sheet molding compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The raw material formula for the manufacture of SMC sheet molding compound is as follows:

[0036] 55kg unsaturated polyester resin (Jiangsu Fuling Chemical Co., Ltd., FL-9506), 35kg polystyrene low-shrinkage additive (Futian Chemical Industry Co., Ltd., LY-D1), 2kg zinc stearate, 0.1kg p-benzoquinone, 0.5kg part of tert-butyl peroxybenzoate, 5kg fumed silica (particle size 7-40nm), 20kg expanded perlite (particle size less than 400 mesh), 20kg hollow floating beads (particle size 2-5μm), 110kg filler (55kg calcium powder, 55kg aluminum powder), 1kg magnesia paste (25% by weight active magnesia RA-150 dissolved in carrier resin) and 50kg glass fiber (length 3mm).

[0037] The preparation method steps of this SMC sheet molding compound are as follows:

[0038] (1) Put the used powder raw material fumed silica, expanded perlite, and hollow floating beads into a drying oven, and dry at 100-180°C until the moisture content is ≤0.1%;

[0039] (2) Pour unsaturated polyester...

Embodiment 2

[0043] The raw material formula for the manufacture of SMC sheet molding compound is as follows:

[0044] 60kg unsaturated polyester resin (Jiangsu Fuling Chemical Co., Ltd., FL-9506), 38kg polystyrene low-shrinkage additive (Futian Chemical Industry Co., Ltd., LY-D1), 3kg zinc stearate, 0.3kg p-benzoquinone, 1kg part tert-butyl peroxybenzoate, 20kg fumed silica (7-40nm particle size), 20kg expanded perlite (less than 400 mesh particle size), 60kg hollow floating beads (2-5μm particle size), 150kg filler ( 60kg calcium powder, 90kg aluminum powder), 2kg magnesia paste (25% by weight active magnesia RA-150 dissolved in carrier resin) and 60kg glass fiber (length 3mm).

[0045] The preparation method steps of this SMC sheet molding compound are as follows:

[0046] (1) Put the used powder raw material fumed silica, expanded perlite, and hollow floating beads into a drying oven, and dry at 100-180°C until the moisture content is ≤0.1%;

[0047] (2) Pour unsaturated polyester re...

Embodiment 3

[0051] The raw material formula for the manufacture of SMC sheet molding compound is as follows:

[0052]65kg unsaturated polyester resin (Jiangsu Fuling Chemical Co., Ltd., FL-9506), 45kg polystyrene low shrinkage additive (Futian Chemical Industry Co., Ltd., LY-D1), 5kg zinc stearate, 0.5kg p-benzoquinone, 1.5kg portion of tert-butyl peroxybenzoate, 20kg fumed silica, 20kg expanded perlite (particle size less than 400 mesh), 20kg hollow floating beads (particle size 2-5μm), 180kg filler (90kg calcium powder, 90kg aluminum powder), 3kg of magnesia paste (25% by weight active magnesia RA-150 dissolved in carrier resin) and 80kg of glass fibers (length 6mm).

[0053] The preparation method steps of this SMC sheet molding compound are as follows:

[0054] (1) Put the used powder raw material fumed silica, expanded perlite, and hollow floating beads into a drying oven, and dry at 100-180°C until the moisture content is ≤0.1%;

[0055] (2) Pour unsaturated polyester resin and lo...

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Abstract

The invention discloses an efficient heat preservation SMC sheet molding compound. The efficient heat preservation SMC sheet molding compound comprises the following components in parts by weight: 55to 65 parts of unsaturated polyester resin; 35-45 parts of a low-shrinkage additive, 2-5 parts of zinc stearate, 0.1-0.5 part of a polymerization inhibitor, 0.2-2.5 parts of tert-butyl peroxybenzoate,5-20 parts of fumed silica, 5-20 parts of expanded perlite, 5-20 parts of hollow floating beads, 100-200 parts of a filler, 1-3 parts of magnesium oxide paste and 50-80 parts of glass fiber. The sheet molding compound provided by the invention has lower heat conductivity coefficient, higher mechanical strength and small product shrinkage rate, can be used for an automobile shell, and reduces theenergy consumption of an automobile caused by heating and refrigeration.

Description

technical field [0001] The invention belongs to the field of SMC molding compounds, and in particular relates to a high-efficiency thermal insulation SMC sheet molding compound and a preparation method thereof. Background technique [0002] Sheet molding compound, namely SMC (Sheet Molding Compounds), often referred to as unsaturated polyester resin sheet molding compound, is composed of unsaturated polyester resin, low shrinkage additives, fillers, curing agents, thickeners, release agents It is a dry sheet prepreg composed of glass fiber, etc. It has the characteristics of low shrinkage, high strength, and convenient molding, and is especially suitable for industrial mass production. [0003] With the continuous improvement of domestic SMC manufacturing technology and compression molding technology, the reduction of mold costs, and the improvement of government requirements for working environments, many products that were originally molded by hand lay-up, spraying, etc. h...

Claims

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Application Information

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IPC IPC(8): C08L67/06C08K13/06C08K9/12C08K7/14C08K7/26C08K5/098C08K5/14C08K3/22C08K3/08C08K3/26
CPCC08K13/06C08K9/12C08K7/14C08K7/26C08K5/098C08K5/14C08K3/22C08K3/08C08K3/26C08K2201/014C08K2003/222C08K2201/011C08K2003/0812C08K2003/265C08L67/06Y02P20/10
Inventor 孙乾乾江林鹤林昌炳余桐柏黄贵明
Owner 广东百汇达新材料有限公司
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