Halogen-free flame-retardant high-toughness bulk molding compound and method for preparing same

A flame-retardant, high-toughness technology, used in the formulation and preparation of halogen-free flame-retardant high-toughness bulk molding compounds, can solve problems such as toxicity, corrosiveness, environmental safety hazards, etc., achieve good flame retardant performance, avoid The effect of surface micro-cracks and small environmental impact

Inactive Publication Date: 2018-09-28
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a halogen-free flame-retardant high-toughness bulk molding compound and its preparation method to solve the problem of certain toxicity and corrosiveness of the bulk molding compound in the prior art. Issues such as hidden dangers to environmental safety

Method used

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  • Halogen-free flame-retardant high-toughness bulk molding compound and method for preparing same

Examples

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Comparison scheme
Effect test

Embodiment 1

[0033] A halogen-free flame-retardant high-toughness bulk molding compound, which consists of: 26 parts of unsaturated polyester-polyurethane composite resin, 1 part of curing agent, 29 parts of inorganic flame-retardant filler, and 10 parts of organic flame-retardant 16 parts of modified heavy calcium carbonate, 1 part of release agent, 14 parts of reinforcing fiber, 1 part of auxiliary agent and 2 parts of toner;

[0034] The preparation steps are:

[0035] (1) First add the unsaturated polyester-polyurethane composite resin, curing agent, release agent, and additives into a high-shear mixer and mix at high speed for 12-20 minutes. After stirring evenly, slowly add the modified inorganic resist Combustible filler, organic flame retardant, modified ground calcium carbonate and toner are mixed and stirred for 8-10 minutes, and after vacuum defoaming for 30 minutes, the materials are discharged to obtain resin premixed slurry.

[0036] (2) Add the premixed slurry in the above ...

Embodiment 2

[0049] A halogen-free flame-retardant high-toughness bulk molding compound, which consists of: 27 parts of unsaturated polyester-polyurethane composite resin, 1 part of curing agent, 27 parts of inorganic flame-retardant filler, 12 parts of organic flame retardant, 14 parts of modified ground calcium carbonate, 1 part of release agent, 15 parts of reinforcing fiber, 1 part of auxiliary agent and 2 parts of toner.

[0050] The preparation steps are:

[0051] (1) First add the unsaturated polyester-polyurethane composite resin, curing agent, release agent, and additives into a high-shear mixer and mix at high speed for 12-20 minutes. After stirring evenly, slowly add the modified inorganic resist Combustible filler, organic flame retardant, modified ground calcium carbonate and toner are mixed and stirred for 8-10 minutes, and after vacuum defoaming for 30 minutes, the materials are discharged to obtain resin premixed slurry.

[0052] (2) Add the premixed slurry in the above st...

Embodiment 3

[0065] A halogen-free flame-retardant high-toughness bulk molding compound, which consists of: 27 parts of unsaturated polyester-polyurethane composite resin, 1 part of curing agent, 26 parts of inorganic flame-retardant filler, 13 parts of organic flame retardant, 13 parts of modified ground calcium carbonate, 1 part of release agent, 16 parts of reinforcing fiber, 1 part of auxiliary agent and 2 parts of toner.

[0066] (1) First add the unsaturated polyester-polyurethane composite resin, curing agent, release agent, and additives into a high-shear mixer and mix at high speed for 12-20 minutes. After stirring evenly, slowly add the modified inorganic resist Combustible filler, organic flame retardant, modified ground calcium carbonate and toner are mixed and stirred for 8-10 minutes, and after vacuum defoaming for 30 minutes, the materials are discharged to obtain resin premixed slurry.

[0067] (2) Add the premixed slurry in the above step (1) into a biaxial kneader, then a...

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Abstract

The invention provides a halogen-free flame-retardant high-toughness bulk molding compound and a method for preparing the same, and relates to the technical field of bulk molding compounds. The halogen-free flame-retardant high-toughness bulk molding compound comprises unsaturated polyester-polyurethane composite resin, curing agents, modified inorganic flame-retardant fillers, organic flame retardants, modified heavy calcium carbonate, release agents, reinforcement fibers, auxiliaries and toner. The method includes mixing raw materials for the halogen-free flame-retardant high-toughness bulkmolding compound with one another to form a compression molding or injection molding adhesive composite material 'in the shape of oil putty'; molding the compression molding or injection molding adhesive composite material by the aid of mold pressing processes to obtain the halogen-free flame-retardant high-toughness bulk molding compound. The halogen-free flame-retardant high-toughness bulk molding compound and the method have the advantages that unsaturated polyester and thermoset polyurethane interpenetrate network polymers, accordingly, the rigidity and the toughness of the halogen-free flame-retardant high-toughness bulk molding compound can be obviously improved, and the contraction ratio of the halogen-free flame-retardant high-toughness bulk molding compound can be reduced; multiple inorganic/organic composite halogen-free flame-retardant systems are used, synergistic effects can be realized by the multiple inorganic/organic composite halogen-free flame-retardant systems, accordingly, the halogen-free flame-retardant high-toughness bulk molding compound can be free of halogen and low in smoke and is nontoxic, environmental impact can be minimized, and the flame retardance of the halogen-free flame-retardant high-toughness bulk molding compound can be optimized.

Description

technical field [0001] The invention relates to the technical field of bulk molding compounds, and more specifically relates to a formulation and a preparation method of a halogen-free flame-retardant high-toughness bulk molding compound. Background technique [0002] With the growth and popularization of new material products, the corresponding new composite material products are more and more popular among the public. Among them, bulk molding compound (BMC) has excellent electrical properties, mechanical properties, heat resistance, and chemical corrosion resistance. , not only adapt to various molding processes, but also meet the performance requirements of various products, so it can be widely used in aerospace, automobile industry, transportation, electronic equipment, electrical appliances, machinery manufacturing, construction and other fields. [0003] Bulk molding compound (BMC) is a thermosetting plastic in which various inert fillers, unsaturated polyester resins,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/14C08L83/04C08K13/06C08K9/06C08K9/04C08K7/28C08K3/22C08K3/26C08K7/06C08K7/14C08K7/10C08K3/32
CPCC08K2003/2224C08K2003/2227C08K2003/265C08K2003/323C08K2201/011C08L75/14C08L2201/02C08L2201/22C08L83/04C08K13/06C08K9/06C08K9/04C08K7/28C08K3/22C08K3/26C08K7/06C08K7/14C08K7/10C08K3/32
Inventor 杨建军陈曼陈鑫汪德成陈爱明吴庆云吴明元张建安刘久逸
Owner ANHUI UNIVERSITY
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