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Synthetic method of efficient flame-retardant epoxy vinyl ester resin

A technology of epoxy vinyl ester and synthesis method, which is applied in the field of synthesis of high-efficiency flame-retardant epoxy vinyl resin, and can solve the problems of large amount of addition, affecting the transparency and mechanical properties of products, etc.

Inactive Publication Date: 2015-11-04
YONGYUE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The introduction of reactive halogens reported in the patent is more, and it is often used in combination with antimony trioxide, the effect is ideal, but when the amount added is large, the transparency and mechanical properties of the product will be affected
Therefore, in some special application fields such as FRP wet electrostatic precipitator equipment, it is required to have strong acid and alkali corrosion resistance at high temperature, as well as excellent mechanical properties and high-efficiency flame retardancy. Only use the above patent report The preparation method of flame retardant resin failed to achieve the comprehensive expected ideal effect

Method used

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  • Synthetic method of efficient flame-retardant epoxy vinyl ester resin

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The raw material formula is as follows:

[0026] Bisphenol A diglycidyl ether 280Kg, brominated epoxy resin 525Kg, fumaric acid 62Kg, acrylic acid 144Kg, trichloroethyl phosphate 68Kg, tetraethylammonium bromide 7.0Kg, antioxidant 1Kg, p-phenylene Diphenol 300g, copper naphthenate 500g, styrene 520g.

[0027] Preparation:

[0028] ① Accurately weigh each synthetic raw material component in order according to the weight ratio, check and confirm whether the equipment, electrical appliances, instruments, valves and raw materials are normal;

[0029] ② Put the liquid material first and then the solid material into the reactor in sequence, and then put bisphenol A diglycidyl ether, brominated epoxy resin, polymerization inhibitor, catalyst and antioxidant into the reactor, and the reaction temperature rises slowly to 50°C , add a small amount of chain-extending dibasic acid in batches, raise the temperature to 75°C, keep it warm for 2 hours, and the reaction acid value wil...

Embodiment 2

[0033] The raw material formula is as follows:

[0034] Bisphenol A diglycidyl ether 200Kg, brominated epoxy resin 550Kg, fumaric acid 60Kg, acrylic acid 130Kg, trichloroethyl phosphate 75Kg, tetraethylammonium bromide 7.0Kg, antioxidant 1Kg, p-phenylene Diphenol 300g, copper naphthenate 500g, styrene 500g.

[0035] Preparation:

[0036] ① Accurately weigh each synthetic raw material component in order according to the weight ratio, check and confirm whether the equipment, electrical appliances, instruments, valves and raw materials are normal;

[0037] ② Put the liquid material first and then the solid material into the reactor in sequence, and then put bisphenol A diglycidyl ether, brominated epoxy resin, polymerization inhibitor, catalyst and antioxidant into the reactor, and the reaction temperature rises slowly to 50°C , add a small amount of chain-extending dibasic acid in batches, raise the temperature to 85°C, keep it warm for 2 hours, and the reaction acid value wil...

Embodiment 3

[0041] The raw material formula is as follows:

[0042] Bisphenol A diglycidyl ether 150Kg, brominated epoxy resin 600Kg, fumaric acid 50Kg, acrylic acid 120Kg, trichloroethyl phosphate 90Kg, tetraethylammonium bromide 7.0Kg, antioxidant 1Kg, methyl Hydroquinone 300g, copper naphthenate 500g, styrene 480g.

[0043] Preparation::

[0044] ① Accurately weigh each synthetic raw material component in order according to the weight ratio, check and confirm whether the equipment, electrical appliances, instruments, valves and raw materials are normal;

[0045] ② Put the liquid material first and then the solid material into the reactor in sequence, put bisphenol A diglycidyl ether, brominated epoxy resin, polymerization inhibitor, catalyst and antioxidant into the reactor, and the reaction temperature rises slowly to 50°C , add a small amount of chain-extending dibasic acid in batches, raise the temperature to 85°C, keep it warm for 2.5h, and the reaction acid value will drop below...

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Abstract

The invention discloses a synthetic method of efficient flame-retardant epoxy vinyl ester resin. Biophenol A diglycidyl ether, brominated epoxy resin, a polymerization inhibitor, a catalyst and an antioxidant are sequentially added to a reaction kettle, the reaction temperature slowly rises to 50 DEG C, chain extension binary acids / anhydrides are added in small quantities in batches, the mixture is heated to the temperature of 75-85 DEG C, the temperature is kept for 2 h, and the reaction acid value is decreased to be lower than 2; (3) unsaturated monoacid is dropwise added to the reaction kettle at the dropping speed of 50 ml / h, the reaction temperature change condition is observed, and congelation caused by excessively fast temperature rises is avoided; after addition, the mixture is slowly heated to the temperature of 110-115 DEG C, and the temperature is kept for 4-5 h until the acid value is decreased to be lower than 15; (4) the mixture is diluted with a crosslinking agent and fully stirred, then a flame-retardant aid is added, after the material temperature is decreased to be lower than 45 DEG C, stirring is stopped, cooling water is turned off, and package is performed. By means of the method, the best flame-retardant effect can be realized and the flame-retardant requirement in certain special fields can be met.

Description

technical field [0001] The invention relates to the field of synthesis of organic polymer compounds, in particular to a synthesis method of high-efficiency flame-retardant epoxy vinyl resin. Background technique [0002] Vinyl ester resin is prepared by chemical reaction of epoxy resin and unsaturated monobasic acid through ring-opening addition. It retains the basic chain segment of epoxy resin, and has the good process performance of unsaturated polyester resin. It inherits the excellent characteristics of epoxy resin, and has better curability and formability. It can be dissolved in styrene and acrylic acid. System monomer. [0003] Due to the advantages of both epoxy and unsaturated, its application field is constantly expanding, mainly used in the chemical industry with strict requirements such as chemical corrosion resistance, acid and alkali resistance, such as in the manufacture of desulfurization and denitrification equipment in new energy wind power and environmen...

Claims

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Application Information

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IPC IPC(8): C08L63/10C08G59/16C08G59/17C08G59/42C08G59/20C08G59/24C08K5/521C08F283/10
Inventor 马广超黄腾安陈晓彬柯荣太
Owner YONGYUE SCI & TECH
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