Modified phenolic resin, modified phenolic resin product, preparation methods of modified phenolic resin and modified phenolic resin product and application of modified phenolic resin product

A phenolic resin and modification technology, used in the field of modified phenolic resin, modified phenolic resin products and their preparation, can solve problems such as poor flame retardant performance, carbonization, and oxidation, and achieve excellent mechanical properties and improved flame retardant performance. , the effect of improving the flame retardant performance

Active Publication Date: 2018-01-26
湖南金泰环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The unmodified phenolic resin will undergo obvious oxidation when the temperature is higher than 200 ° C. As the temperature rises further, the phenolic resin will even undergo pyrolysis and carbonization, and the flame retardancy is poor.
[0003] In order to enhance the flame retardant performance of phenolic resin, new groups are often introduced to modify phenolic resin. At present, there are four main methods to improve its flame retardant performance: maleamide group modified phenolic resin, boron modified phenolic resin Resin, molybdenum modified phenolic resin and silicone modified phenolic resin, but the flame retardancy of the above four modified phenolic resins is not significantly improved, and oxidation will still occur when the temperature is slightly higher than 200 ° C. Prepare with these modified phenolic resins The test results of the obtained plastic products according to the GB50222-95 "Code for Fire Protection Design of Building Interior Decoration" cannot reach the A-A2 standard, and the scope of application is limited

Method used

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  • Modified phenolic resin, modified phenolic resin product, preparation methods of modified phenolic resin and modified phenolic resin product and application of modified phenolic resin product
  • Modified phenolic resin, modified phenolic resin product, preparation methods of modified phenolic resin and modified phenolic resin product and application of modified phenolic resin product
  • Modified phenolic resin, modified phenolic resin product, preparation methods of modified phenolic resin and modified phenolic resin product and application of modified phenolic resin product

Examples

Experimental program
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Effect test

preparation example Construction

[0064] A1-A5. Preparation of modified phenolic resin:

[0065] a. Dissolve powdered chloroprene rubber in acetone to make liquid A;

[0066] b. Dissolve polyvinyl acetal in formaldehyde to make liquid B;

[0067] c. Dissolve phenol in water at 100°C and add it to the reaction kettle, then add liquid A, formaldehyde and phosphoric acid in sequence, react at a temperature of 60-70°C for 1 hour to generate phosphorus phenolic aldehyde, then lower the temperature by 5°C and add resorcinol Phenol obtains liquid C;

[0068] d. Mix liquid B and liquid C.

[0069] B1. Preparation of modified phenolic resin:

[0070]a. Dissolve powdered chloroprene rubber in acetone to make liquid A;

[0071] b. Dissolve polyvinyl acetal in formaldehyde to make liquid B;

[0072] c. Dissolve phenol in water at 100°C and add it to the reactor, add liquid A, formaldehyde and molybdic acid in sequence, react at a temperature of 60-70°C for 1 hour to form molybdenum phenolic formaldehyde, then lower t...

Embodiment 1-5

[0081] The preparation of embodiment 1-5 and comparative example 1-2 modified phenolic resin product:

[0082] a. Mix to modified phenolic resin and Polyethylene Glycol, then add oleic acid and methylene dichloride, continue to add the aqueous solution of benzenesulfonic acid sodium salt and coupling agent after stirring and stir to obtain reaction mixture A;

[0083] b. After mixing and dispersing zinc borate, aluminum hydroxide, barium sulfate whiskers and water base, grind into an emulsion mixed solution with a three-roller machine, then add it to the above reaction mixture A and stir to obtain reaction mixture B;

[0084] c. add dicyandiamide to the reaction mixture B, stir into the impregnated phenolic formaldehyde of latex;

[0085] d. The modified phenolic resin product is obtained by pultrusion molding of the impregnated phenolic resin.

[0086] Wherein, the concentration of solute in the aqueous solution of the above-mentioned benzenesulfonic acid sodium salt is 50wt...

Embodiment 6-7

[0088] The preparation of embodiment 6-7 modified phenolic resin products:

[0089] A. the modified phenolic resin and polyethylene glycol are mixed, then add oleic acid and methylene chloride, stir to obtain reaction mixture A;

[0090] b. After mixing and dispersing zinc borate, aluminum hydroxide, barium sulfate whiskers and water base, grind into an emulsion mixed solution with a three-roller machine, then add it to the above reaction mixture A and stir to obtain reaction mixture B;

[0091] c. add dicyandiamide to the reaction mixture B, stir into the impregnated phenolic formaldehyde of latex;

[0092] d. The modified phenolic resin product is obtained by pultrusion molding of the impregnated phenolic resin.

[0093] The various raw materials (in g) and performance data tests in Preparation Examples 1-7 and Comparative Examples 1-2 are shown in Table 2.

[0094]

[0095] From the results in Table 2, it can be seen that the combustion grades in Examples 1-7 of the pr...

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Abstract

The invention discloses modified phenolic resin and relates to the field of modification of phenolic resin. The modified phenolic resin is prepared from raw materials in parts by weight as follows: 100-110 parts of phenol, 120-130 parts of formaldehyde, 10-15 parts of acetone, 50-80 parts of ethanol, 5-10 parts of powdery chloroprene rubber, 10-15 parts of phosphoric acid, 12-15 parts of polyvinylacetal and 3-5 parts of resorcinol. The flame retardance and the toughness of the modified phenolic resin are improved. The invention also discloses a phenolic resin product prepared from the modified phenolic resin. The phenolic resin product is prepared from raw materials as follows: 50-60 parts of the modified phenolic resin, 14-18 parts of zinc borate, 5-10 parts of barium sulfate whiskers, 6-8 parts of polyethylene glycol, 12-15 parts of aluminum hydroxide, 3-5 parts of dicyandiamide, 1.5-3.5 parts of oleic acid and 5-10 parts of dichloromethane. The flame retardance of the phenolic resin product is further improved, and the good mechanical property of the phenolic resin product can be kept. The modified phenolic resin product can be widely applied to evacuation platforms for subways.

Description

technical field [0001] The invention relates to the field of modification of phenolic resins, in particular to modified phenolic resins, modified phenolic resin products, preparation methods and applications thereof. Background technique [0002] Phenolic resin has good acid resistance and mechanical properties, and is widely used because of its easy-to-obtain raw materials and convenient synthesis. The unmodified phenolic resin will undergo obvious oxidation when the temperature is higher than 200 ° C. As the temperature rises further, the phenolic resin will even undergo pyrolysis and carbonization, and the flame retardancy is poor. [0003] In order to enhance the flame retardant performance of phenolic resin, new groups are often introduced to modify phenolic resin. At present, there are four main methods to improve its flame retardant performance: maleamide group modified phenolic resin, boron modified phenolic resin Resin, molybdenum modified phenolic resin and silico...

Claims

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Application Information

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IPC IPC(8): C08G8/28C08L61/14C08L11/00C08L29/14C08K13/04C08K7/08C08K3/22C08K5/09C08K5/315C08K3/38
Inventor 张全旺
Owner 湖南金泰环保科技有限公司
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