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Bulk molding compound with application of magnesium series fire retardant and preparation method thereof

A slug molding compound and flame retardant technology, which is applied in the field of insulating flame retardant materials, can solve the problems of affecting the mechanical properties and processing fluidity of composite materials, high addition of magnesium-based flame retardants, and no flame retardant effect. Achieve excellent mechanical strength, good flame retardant effect and excellent electrical properties

Inactive Publication Date: 2017-07-07
大连亚泰科技新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Magnesium hydroxide as disclosed in CN101270216A is only used as a thickener, and does not bring into play its flame retardant effect
And the addition of magnesium-based flame retardants is high, which affects the mechanical properties and processing fluidity of composite materials

Method used

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  • Bulk molding compound with application of magnesium series fire retardant and preparation method thereof
  • Bulk molding compound with application of magnesium series fire retardant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: 50 parts of unsaturated polyester resin, 30 parts of low-shrinkage additive, 2.5 parts of initiator, 0.1 part of polymerization inhibitor, 0.2 part of curing agent, and 1.5 parts of release agent were mixed at a high speed according to the metering for 10~ 30 minutes; the components after high-speed mixing are added to the biaxial kneading equipment, and 80 parts of flame retardant, 0.15 parts of thickener, and 60 parts of glass fiber are added in sequence and kneaded and mixed. The mixing time is 10 to 20 minutes, and the mixing temperature is less than 60 ℃; made into strips by extruder and wrapped individually with plastic film.

Embodiment 2

[0024] Example 2: 55 parts of unsaturated polyester resin, 40 parts of low-shrinkage additive, 2.5 parts of initiator, 0.5 part of polymerization inhibitor, 0.2 part of curing agent, 1.5 parts of mold release agent, and high-speed mixing according to metering for 10~ 30 minutes; the components after high-speed mixing are added to a biaxial kneading device, and 100 parts of flame retardant, 0.1 part of thickener, and 70 parts of glass fiber are added in sequence and kneaded and mixed. The mixing time is 10 to 20 minutes, and the mixing temperature is less than 60 ℃; made into strips by extruder and wrapped individually with plastic film.

Embodiment 3

[0025] Example 3: 60 parts of unsaturated polyester resin, 40 parts of low-shrinkage additive, 2.5 parts of initiator, 1 part of polymerization inhibitor, 0.2 part of curing agent, 1.5 parts of release agent, and high-speed mixing according to metering for 10 to 10 parts 30 minutes; the components after high-speed mixing are added to the biaxial kneading equipment, and 110 parts of flame retardant, 0.1 part of thickener, and 80 parts of glass fiber are added in sequence and kneaded and mixed. The mixing time is 10 to 20 minutes, and the mixing temperature is less than 60 ℃; made into strips by extruder and wrapped individually with plastic film.

[0026] The following table is the formula table of three embodiments:

[0027] components Example 1 Example 2 Example 3 Unsaturated polyester resin 50 55 60 Low Shrinkage Additive 30 40 40 Initiator 2.5 2.5 2.5 Polymerization inhibitor 0.1 0.5 1 Hardener 0.2 0.2 0.2 Release ...

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Abstract

The invention belongs to the technical field of insulating and flame-retardant materials, and relates to a bulk molding compound with an application of a magnesium series fire retardant and a preparation method thereof. The product comprises the following raw material components in parts by weight: 50-80 parts of unsaturated polyester resin, 20-40 parts of a low profile additive, 1-5 parts of an initiator, 0.1-1 part of a polymerization inhibitor, 0.1-5 parts of a curing agent, 1-2 parts of a mold releasing agent, 0.1-2 parts of a thickening agent, 80-120 parts of a fire retardant, and 60-120 parts of glass fibre. The BMC material has the advantages of excellent mechanical strength in normal state and thermal state as well as excellent electrical performance in hygrothermal environment; usage problems of magnesium series fire retardants in nonsaturated polyester are solved, flame retardation effects are good, and the product is halogen free and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of insulating and flame-retardant materials, and relates to a bulk molding compound (BMC) using a magnesium-based flame retardant and a preparation method thereof. Background technique [0002] The abbreviation of BMC material Bulk moiding compounds, that is, bulk molding compound, which is often called unsaturated polyester bulk molding compound in China. It is mainly a kind of thermosetting material made by physical mixing of unsaturated polyester resin (UPR), low shrinkage additives, initiators, mineral fillers, chopped fibers, chemical thickeners and related functional additives. Unsaturated polyester (UPR) is a polymer formed by polycondensation of saturated diols and unsaturated (maybe partially saturated) dibasic acids (or anhydrides), which have typical characteristics of ester bonds and unsaturated double bonds. Since the molecular chain of the resin contains unsaturated double bonds, it can be cop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/06C08L63/10C08L23/06C08L25/06C08L31/04C08L33/12C08K13/06C08K9/06C08K3/22C08K7/14
CPCC08K2201/004C08L63/10C08L67/06C08L2201/02C08L2201/22C08L23/06C08L25/06C08L31/04C08L33/12C08K13/06C08K9/06C08K9/08C08K2003/2224C08K7/14
Inventor 孙忠祥
Owner 大连亚泰科技新材料股份有限公司