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SMC polyester moulding compound as well as preparation method and application thereof

A technology of molding compound and polyester, which is applied in the field of SMC polyester molding compound and its preparation, can solve problems such as high thermal stability temperature, influence of construction personnel, loss of materials, etc., to increase thermal deformation temperature, improve pass rate, reduce effect of density

Inactive Publication Date: 2020-04-03
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

At the same time, styrene has the characteristics of high vapor pressure and strong volatility, which not only affects the construction personnel, pollutes the environment, but also loses materials
[0006] CN109825040A discloses a kind of resin composition and resin paste and SMC, and this resin composition comprises can thicken epoxy vinyl ester resin, low shrinkage agent, initiator, polymerization inhibitor, internal release agent and thickener, and Based on 100 parts by weight of the thickenable epoxy vinyl ester resin, the content of the low shrinkage agent is 25-45 parts by weight, the content of the initiator is 1-1.5 parts by weight, and the content of the polymerization inhibitor is 0.2-0.6 parts by weight. The content of the release agent is 4-8 parts by weight, and the content of the thickener is 1.5-15 parts. Although the SMC can reduce the weight of the product and improve the molding efficiency, the thermal stability temperature is high, and it is not suitable for long-term work in a high temperature environment. requirements

Method used

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  • SMC polyester moulding compound as well as preparation method and application thereof
  • SMC polyester moulding compound as well as preparation method and application thereof
  • SMC polyester moulding compound as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] This embodiment provides a kind of SMC polyester molding compound, the preparation raw material of described SMC polyester molding compound comprises the following components in parts by weight:

[0079]

[0080] The preparation method of SMC polyester molding compound described in the present embodiment comprises the following steps:

[0081] (1) Combine m-phenylene neopentyl glycol type unsaturated polyester resin, low shrinkage additive (polystyrene, styrene), liquid pigment (medium chrome yellow) and process additive (butyl acrylate-acrylic acid copolymer) in Stirring and dispersing in a high-speed disperser for 2 minutes, the rotating speed of the stirring and dispersing is 1000r / min, to obtain a resin slurry;

[0082] (2) Add lightweight filler material (hollow glass microspheres processed by triethylenetriaminopropyltrimethoxysilane) to the resin slurry obtained in step (1), after stirring at a speed of 500r / min for 10min; Add calcium carbonate, release agent...

Embodiment 2

[0085] This embodiment provides a kind of SMC polyester molding compound, the preparation raw material of described SMC polyester molding compound comprises the following components in parts by weight:

[0086]

[0087] The preparation method of SMC polyester molding compound described in the present embodiment comprises the following steps:

[0088] (1) Combine m-phenylene neopentyl glycol type unsaturated polyester resin, low shrinkage additive (polystyrene, styrene), liquid pigment (medium chrome yellow) and process additive (butyl acrylate-acrylic acid copolymer) in Stirring and dispersing in a high-speed disperser for 3 minutes, the rotating speed of the stirring and dispersing is 1100r / min, to obtain a resin slurry;

[0089] (2) Add lightweight filler material (hollow glass microspheres processed by triethylenetriaminopropyltrimethoxysilane) to the resin slurry obtained in step (1), after stirring at a speed of 450r / min for 12min; Add calcium carbonate, release agent...

Embodiment 3

[0092] This embodiment provides a kind of SMC polyester molding compound, the preparation raw material of described SMC polyester molding compound comprises the following components in parts by weight:

[0093]

[0094] The preparation method of SMC polyester molding compound described in the present embodiment comprises the following steps:

[0095] (1) Combine m-phenylene neopentyl glycol type unsaturated polyester resin, low shrinkage additive (polystyrene and styrene), liquid pigment (carbon black slurry) and process additive (butyl acrylate-acrylic acid copolymer) Stirring and dispersing in a high-speed disperser for 3 minutes, the rotating speed of the stirring and dispersing is 1100r / min, to obtain a resin slurry;

[0096] (2) Add lightweight filler material (hollow glass microspheres processed by triethylenetriaminopropyltrimethoxysilane) to the resin slurry obtained in step (1), after stirring at a speed of 450r / min for 12min; Add calcium carbonate, release agent ...

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Abstract

The invention provides an SMC polyester moulding compound as well as a preparation method and application thereof. The SMC polyester moulding compound is prepared from the following raw materials in parts by weight: 60-70 parts of m-benzene neopentyl glycol type unsaturated polyester resin, 30-40 parts of a low-shrinkage additive, 10-20 parts of a light filling material, 120-130 parts of calcium carbonate, 1.0-1.2 parts of an initiator, 4-5 parts of a release agent, 4-6 parts of a process additive and 60-70 parts of glass fiber. The SMC polyester moulding compound has good mechanical properties and high temperature resistance, the material density is low, and lightweighting modification of the SMC polyester moulding compound is realized.

Description

technical field [0001] The invention belongs to the field of material processing and modification, and in particular relates to an SMC polyester molding compound and its preparation method and application. Background technique [0002] The lightweight of automobiles has made plastics and other polymer materials widely used in the field of auto parts. At present, the application of polymer materials in automobiles is not limited to interior decoration, seats, lights and other parts, but has expanded to fuel tanks. , fan blades, fenders and other structural parts. This should take into account the stability of polymer composite materials in high temperature environments such as fuel tanks, fan blades, engine covers, etc., and will not crack, warp, deform, etc., and avoid safety accidents. In the case of increasing costs, it is impossible to completely replace a major bottleneck of materials such as ceramics and metals. [0003] The thermal stability temperature of existing f...

Claims

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Application Information

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IPC IPC(8): C08L67/06C08L25/06C08L33/08C08K13/06C08K3/26C08K7/14C08K9/06C08K7/28C08J5/18C08F283/01C08F212/08
CPCC08F283/01C08J5/18C08K2003/265C08L67/06C08L25/06C08L33/064C08K13/06C08K3/26C08K7/14C08K9/06C08K7/28C08F212/08
Inventor 张颂夏宏伟冯伟祖季玲赵岳丹
Owner 无锡新宏泰电器科技股份有限公司