Unsaturated polyester fiber reinforced bulk molding compound and preparation method thereof

A technology of bulk molding compound and polyester fiber, which is applied in the field of unsaturated polyester fiber reinforced bulk molding compound and its preparation, and can solve the problems of low strength and poor impact resistance

Active Publication Date: 2013-04-10
KUNMING PURETOWN ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, ordinary unsaturated polyester fiber reinforced bulk molding compound has the disadvantages of poor impact resistance and low strength.

Method used

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  • Unsaturated polyester fiber reinforced bulk molding compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Formula according to weight ratio: 36 parts of phthalic anhydride-propylene glycol unsaturated polyester, 0.3 part of cobalt naphthenate, 0.2 part of methyl ethyl ketone peroxide, 30 parts of 500 mesh and 200 mesh calcium carbonate mixed at 1:1 by weight, anti 0.2 part of static agent, 0.1 part of antioxidant, and 0.2 part of pentabromophenol were mixed uniformly with a mixer to obtain a resin paste.

[0018] The prepared resin paste is impregnated with 28 parts by weight of non-alkali non-twisted glass roving in a kneader, and the glass roving is added within 5 minutes, kneaded for 15 minutes and mixed evenly.

[0019] Extrude the dough soaked in glass roving with an extruder, seal and pack it with a polyethylene film, and place it in a dry environment at room temperature for 24 hours to obtain an unsaturated fiber-reinforced dough molding compound.

Embodiment 2

[0021] Formula according to weight ratio: 45 parts of phthalic anhydride-propylene glycol unsaturated polyester, 0.4 part of cobalt naphthenate, 0.3 part of methyl ethyl ketone peroxide, 30 parts of 500 mesh calcium carbonate, 0.2 part of antistatic agent, 0.12 part of antioxidant , 0.2 parts of pentabromophenol, and mix it uniformly with a mixer to obtain a resin paste.

[0022] The prepared resin paste is impregnated with 28 parts by weight of non-alkali non-twisted glass roving in a kneader, and the glass roving is added within 5 minutes, kneaded for 15 minutes and mixed evenly.

[0023] Extrude the dough soaked in glass roving with an extruder, seal and pack it with a polyethylene film, and place it in a dry environment at room temperature for 24 hours to obtain an unsaturated fiber-reinforced dough molding compound.

Embodiment 3

[0025] Formula according to weight ratio: 40 parts of isophthalic acid-diethylene glycol unsaturated polyester, 0.4 part of cobalt naphthenate, 0.3 part of methyl ethyl ketone peroxide, 30 parts of 500 mesh calcium carbonate, 0.2 part of antistatic agent, antistatic 0.12 parts of oxygen agent and 0.2 parts of pentabromophenol were mixed uniformly with a mixer to obtain a resin paste.

[0026] The prepared resin paste is impregnated with 30 parts by weight of carbon fiber in a kneader, and the carbon fiber is added within 5 minutes, kneaded for 15 minutes and mixed evenly.

[0027] Extrude the dough impregnated with carbon fiber with an extruder, seal and pack it with a polyethylene film, and place it in a dry environment at room temperature for 24 hours to obtain an unsaturated fiber-reinforced dough molding compound.

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Abstract

The invention relates to a preparation method of an unsaturated polyester fiber reinforced bulk molding compound and aims at providing the unsaturated polyester fiber reinforced bulk molding compound that has high strength, impact resistance and high-temperature and low-temperature resistance. The unsaturated polyester fiber reinforced bulk molding compound comprises the following materials in parts by weight: 30-50 parts of unsaturated polyester, 0.3-0.5 parts of cobalt naphthenate, 0.2-0.4 parts of methyl ethyl ketone peroxide, 25-35 parts of reinforced fibers, 30-40 parts of calcium carbonate, 0.2-0.3 parts of antistatic agent, 0.1-0.15 parts of antioxidant agent and 0.2-0.3 parts of pentabromophenol. The unsaturated polyester fiber reinforced bulk molding compound has the advantages of high toughness and high strength; the impact strength is 150kj/m<2>; the bending strength is 180MPa; and the tensile strength is 90MPa.

Description

technical field [0001] The invention relates to a reinforced plastic and a preparation method thereof, in particular to an unsaturated polyester fiber reinforced bulk molding compound and a preparation method thereof. Background technique [0002] Unsaturated polyester fiber reinforced bulk molding compound is a mass prepreg mainly composed of chopped glass fiber, unsaturated resin, filler and various additives after thorough mixing. The material was first applied in the former West Germany and the United Kingdom in the 1960s, and then developed in the United States and Japan in the 1970s and 1980s respectively. Because unsaturated polyester fiber reinforced bulk molding compound has excellent electrical properties, mechanical properties, heat resistance and chemical corrosion resistance, and is suitable for various molding processes, it can meet the performance requirements of various products, so it is more and more popular Loved by the majority of users. [0003] But or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/06C08K13/04C08K5/14C08K3/26C08K5/098C08K5/136C08K7/00C08K7/14C08K7/06
Inventor 周禹珺田雨
Owner KUNMING PURETOWN ENVIRONMENTAL TECH
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