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Preparation method of novel special unsaturated polyester resin for handicraft products

A polyester resin, unsaturated technology, applied in the field of preparation of unsaturated polyester resin for new handicrafts, can solve the problems of long surface drying time, poor sandability, poor air drying, etc., and achieve low molding conditions and fast molding speed , The effect of air-drying performance improvement

Inactive Publication Date: 2019-09-20
淮南舜天合成材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of long surface-drying time, poor air-drying property and poor sandability of traditional general-purpose unsaturated polyester resin after molding, and propose a new type of unsaturated polyester resin specially used for handicrafts. Resin preparation method

Method used

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  • Preparation method of novel special unsaturated polyester resin for handicraft products
  • Preparation method of novel special unsaturated polyester resin for handicraft products
  • Preparation method of novel special unsaturated polyester resin for handicraft products

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Experimental program
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Effect test

Embodiment 1

[0036] Embodiment 1: a kind of preparation method of special-purpose unsaturated polyester resin for novel arts and crafts, comprises the following steps:

[0037] S1. Weigh an appropriate amount of unsaturated resin raw materials and configure the raw materials for reaction. The molar ratio of raw materials is: 1.7-2.40 unsaturated dibasic acid, 0.8-1.3 saturated dibasic acid, dibasic alcohol 2.80-3.90 and benzene Ethylene 3.00-4.80, the amount of phosphorus antioxidant is 0.1-0.9‰ of the total weight of dibasic acid and glycol, the amount of paraffin is 0.05-0.2‰ of the total amount of unsaturated resin, and the amount of polymerization inhibitor is unsaturated 0.03-0.20‰ of the total weight of the resin;

[0038] S2. Put the raw material of unsaturated resin, prepared glycol and phosphorus antioxidant into the polyester reactor, set the motor speed to 100-120r / min, and react at the reaction temperature of 170-180°C for 20- 30min;

[0039] S3. After the stirring is complet...

Embodiment 2

[0063] Embodiment 2: Based on Embodiment 1, the difference is that the unsaturated resin raw material and the configured glycol and phosphorus antioxidant are put into the polyester reactor, and the motor speed is set to 100r / min, and at the reaction temperature React at 170°C for 20 minutes, after stirring, add the prepared unsaturated dibasic acid, saturated dibasic acid and polymerization inhibitor into the polyester reaction kettle, keep it at 140°C for 60 minutes, and control the column temperature No more than 105°C. After the heat preservation is over, slowly heat up the reaction at a rate of 8°C per hour. Raise the temperature of the material to 200°C and then heat it for 90 minutes. Control the column temperature not to exceed 105°C. After the heat preservation, take a sample to measure the acid value; Heat and cool the material until the material temperature drops to 180°C, then add accurately measured polymerization inhibitor and paraffin to the material, and continu...

Embodiment 3

[0065] Embodiment 3: Based on Embodiment 1 and 2, the difference is that the unsaturated resin raw material and the configured glycol and phosphorus antioxidant are dropped into the polyester reactor, and the motor speed is set to be 110r / min, and at React for 25 minutes at a reaction temperature of 175°C; after stirring, add the prepared unsaturated dibasic acid, saturated dibasic acid and polymerization inhibitor into the polyester reactor, keep it warm at 145°C for 75 minutes, and control The column temperature does not exceed 105°C; after the heat preservation is completed, slowly heat up the reaction at a rate of 10°C per hour, raise the temperature of the material to 210°C and then hold for 120 minutes, control the column temperature not to exceed 105°C, and take a sample to measure the acid value after the heat preservation; the reaction is completed Finally, stop heating, cool the material until the material temperature drops to 185°C, then add accurately measured polym...

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Abstract

The invention discloses a preparation method of a novel special unsaturated polyester resin for handicraft products, and belongs to the technical field of unsaturated polyester resins, wherein unsaturated dibasic acid, saturated dibasic acid and diol are used as main raw materials, and are subjected to an esterification reaction to synthesize a polyester, and the polyester is diluted to obtain the novel special unsaturated polyester resin for handicraft products. According to the present invention, the novel special resin can shorten the surface drying time in a handicraft product preparation process, can maintain good flexibility, has the improved air drying performance while maintains the polishability, and can be used for producing various colors of transparent resin handicraft products so as to widen the application fields of handicraft products.

Description

technical field [0001] The invention relates to the technical field of unsaturated polyester resins, in particular to a preparation method of a new type of special unsaturated polyester resin for handicrafts. Background technique [0002] Unsaturated polyester resin is one of the most used resin varieties in thermosetting resins, and it is also the most used matrix resin in the production of fiber-reinforced resin materials. The production process of unsaturated polyester resin is simple, the raw materials are easy to obtain, chemical corrosion resistance, excellent mechanical properties and electrical properties, can be cured at room temperature and pressure, has good process performance, and the price is moderate, and the cost performance is high. It has been widely used in construction. , anti-corrosion, automobiles, electronic appliances and other composite materials. Orthogonal experimental design method uses mathematical statistical technology to control industrial pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/01C08F212/08C08G63/52C08G63/676C08G63/78
CPCC08F283/01C08G63/52C08G63/676C08G63/78C08F212/08
Inventor 徐陈娇王淑敏李强刘晓丽
Owner 淮南舜天合成材料有限责任公司
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