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Quickly-cured unsaturated polyester mold plastic composition and preparation method thereof

An unsaturated molding compound technology, applied in the field of fast curing unsaturated polyester molding compound composition and its preparation, can solve the problems of affecting product performance and quality, failing to achieve the effect of inhibiting polymerization, affecting curing characteristics, etc. Avoid unusable effects, improve surface finish, and improve stability

Inactive Publication Date: 2014-10-01
SICHUAN DONGFANG INSULATING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing fast-curing unsaturated polyester molding compound composition, the proportion of the polymerization inhibitor in the formula is generally between 0.02% and 0.1% of the sum of the unsaturated polyester resin and the low shrinkage additive, and the polymerization inhibitor is less than 0.02% %, the effect of polymerization inhibition is often not achieved, and if the polymerization inhibitor exceeds 0.1%, the gel time will become longer, which will seriously affect its curing characteristics, and it will become dry and hard and cannot be used normally, affecting the performance and quality of the product. quality

Method used

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  • Quickly-cured unsaturated polyester mold plastic composition and preparation method thereof
  • Quickly-cured unsaturated polyester mold plastic composition and preparation method thereof
  • Quickly-cured unsaturated polyester mold plastic composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 11

[0064] A fast-curing unsaturated polyester molding compound composition, consisting of a mixture of 100 parts by mass of unsaturated polyester resin A and low shrinkage additive B, 1.2 parts by mass of initiator, 0.04 parts by mass of compounded polymerization inhibitor, 205 parts by mass of filler Powder material, 5.5 parts by mass of release agent, 8 parts by mass of pigment paste, and 75 parts by mass of chopped glass fiber; wherein:

[0065] In the mixture of 100 parts by mass of unsaturated polyester resin and low-shrinkage additive, the mass ratio is unsaturated polyester resin A:low-shrinkage additive B=5:3;

[0066] The moles of unsaturated dibasic acids in the unsaturated polyester resin A account for 70% to 95% of the total moles of unsaturated dibasic acids and other dibasic acids, and the unsaturated polyester resin A consists of mass The percentage content is 62% unsaturated polyester and 38% styrene, and its viscosity is 750-1500cps;

[0067] Described unsaturat...

Embodiment 12

[0076] A fast-curing unsaturated polyester molding compound composition, consisting of 100 parts by mass of a mixture of unsaturated polyester resin A and low shrinkage additive B, 1.0 parts by mass of an initiator, 0.02 parts by mass of a compounded polymerization inhibitor, and 180 parts by mass of filler Powder material, 5 parts by mass of release agent, 6 parts by mass of pigment paste, and 60 parts by mass of chopped glass fiber; wherein:

[0077] In the mixture of 100 parts by mass of unsaturated polyester resin and low-shrinkage additive, the mass ratio is unsaturated polyester resin A:low-shrinkage additive B=3:3;

[0078] The moles of unsaturated dibasic acids in the unsaturated polyester resin A account for 70% to 95% of the total moles of unsaturated dibasic acids and other dibasic acids, and the unsaturated polyester resin A consists of mass The percentage content is composed of 59% unsaturated polyester and 41% styrene, and its viscosity is 750-1500cps;

[0079] ...

Embodiment 13

[0088] A fast-curing unsaturated polyester molding compound composition, consisting of a mixture of 100 parts by mass of unsaturated polyester resin A and low shrinkage additive B, 1.4 parts by mass of initiator, 0.06 parts by mass of compounded polymerization inhibitor, 230 parts by mass of filler Powder material, 6 parts by mass of release agent, 10 parts by mass of pigment paste, and 90 parts by mass of chopped glass fiber; wherein:

[0089] In the mixture of 100 parts by mass of unsaturated polyester resin and low-shrinkage additive, the mass ratio is unsaturated polyester resin A:low-shrinkage additive B=7:3;

[0090]The moles of unsaturated dibasic acids in the unsaturated polyester resin A account for 70% to 95% of the total moles of unsaturated dibasic acids and other dibasic acids, and the unsaturated polyester resin A consists of mass The percentage content is 65% unsaturated polyester and 35% styrene, and its viscosity is 750-1500cps;

[0091] Described unsaturated...

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Abstract

The invention discloses a quickly-cured unsaturated polyester mold plastic composition. The quickly-cured unsaturated polyester mold plastic composition is characterized by comprising the following raw materials in parts by mass: 100 parts of mixture of unsaturated polyester resin A and a low-shrinkage additive B, 1.0-1.4 parts of initiator, 0.02-0.06 parts of complex inhibitor, 180-230 parts of filling powder material, 5-6 parts of release agent, 6-10 parts of pigment paste and 60-90 parts of chopped glass fiber. A preparation method of the quickly-cured unsaturated polyester mold plastic composition comprises the following steps: kneading slurry of the composition by a kneading machine at 25-35 DEG C, and then adding the chopped glass fiber to continue to knead. The storage period of the quickly-cured unsaturated polyester mold plastic composition at 25-35 DEG C can be up to over three months, thereby avoiding the phenomenon that the quickly-cured unsaturated polyester mold plastic composition becomes dry and hard, and cannot be normally used. The quickly-cured unsaturated polyester mold plastic composition is mainly applied to manufacturing of structural parts in the fields of medium-low-pressure electric insulators, instruments, sanitary ware and transportation.

Description

technical field [0001] The invention belongs to a composition containing an organic polymer compound and its preparation, and relates to a fast-curing unsaturated polyester molding compound composition and a preparation method thereof. The unsaturated polyester molding compound product of the invention is mainly used in medium and low voltage electrical appliances. Insulation, instrumentation, sanitary ware and structural parts manufacturing in the field of transportation, etc. Background technique [0002] In the prior art, unsaturated polyester fiberglass molding compound is mainly composed of unsaturated polyester resin, and is added with low shrinkage additives, initiators, polymerization inhibitors, mineral fillers, release agents, reinforcing fibers and other components, A convenient molded or injection molded composite material produced by a kneader. Unsaturated polyester molding compound is widely used in electrical, automobile, construction, industries such as tra...

Claims

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Application Information

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IPC IPC(8): C08F283/01C08K7/14C08K3/22C08K3/26C08L25/06C08L51/00C08L33/12C08L31/04C08L9/06
Inventor 党晓东李先德邓志威李志强
Owner SICHUAN DONGFANG INSULATING MATERIAL