Preparation method of intumescent flame-retardant rubber

A flame retardant rubber and intumescent technology, applied in the field of preparation of intumescent flame retardant rubber, can solve the problems of migration and exudation, decline in rubber mechanical properties, easy moisture absorption, etc. The effect of mechanical properties

Inactive Publication Date: 2018-08-03
石磊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is aimed at the currently common intumescent flame retardant rubber, because the intumescent flame retardant is rich in -OH, -COOH, -NH 4+ Such as hydrophilic genes, easy to

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] Weigh the pig liver and put it into a tissue pulverizer to pulverize for 20 minutes to obtain the pulverized pig liver. Mix the pulverized pig liver, water and protease at a mass ratio of 10:5:1 and put it into an enzymatic hydrolysis tank. Enzyme at 25°C Decompose for 4 hours to obtain the enzymatic hydrolysis product; put the enzymatic hydrolysis product into a beaker, heat it up to 70°C, heat it for 15 minutes, filter and separate to obtain the filtrate, and mix the filtrate and hydrochloric acid with a mass fraction of 15% at a volume ratio of 20:1 , stir the reaction with a magnetic stirrer at a speed of 200r / min for 1h, and adjust the pH of the reaction product to 7.0 with a mass fraction of 30% ammonia water to obtain a reaction solution; mix the reaction solution and gluconic acid in a mass ratio of 10:1 and then stir the reaction 1h, after the reaction is completed, filter and separate to obtain the complexed filter residue, mix the obtained complexed filter res...

example 2

[0025]Weigh the pig liver and put it into a tissue pulverizer to pulverize for 25 minutes to obtain the pulverized pig liver. Mix the pulverized pig liver, water and protease at a mass ratio of 10:5:1 and put it into an enzymatic hydrolysis tank. Enzyme at 28°C Decompose for 5 hours to obtain the enzymatic hydrolysis product; put the enzymatic hydrolysis product into a beaker, heat up to 75°C, heat it for 18 minutes, filter and separate to obtain the filtrate, and mix the filtrate and hydrochloric acid with a mass fraction of 15% in a volume ratio of 20:1 , stir the reaction with a magnetic stirrer at a speed of 250r / min for 2h, and adjust the pH of the reaction product to 7.1 with a mass fraction of 30% ammonia water to obtain a reaction solution; mix the reaction solution and gluconic acid in a mass ratio of 10:1 and then stir the reaction 1h, after the reaction is completed, filter and separate to obtain the complexed filter residue, mix the obtained complexed filter residue...

example 3

[0027] Weigh the pig liver and put it into a tissue pulverizer to pulverize for 30 minutes to obtain the pulverized pig liver. Mix the pulverized pig liver, water and protease at a mass ratio of 10:5:1 and put it into an enzymatic hydrolysis tank. Enzyme at 30°C Decompose for 5 hours to obtain the enzymatic hydrolysis product; put the enzymatic hydrolysis product into a beaker, heat up to 80°C, heat preservation for 20 minutes, filter and separate to obtain the filtrate, and mix the filtrate and hydrochloric acid with a mass fraction of 15% in a volume ratio of 20:1 , stir the reaction with a magnetic stirrer at a speed of 300r / min for 2h, and adjust the pH of the reaction product to 7.2 with a mass fraction of 30% ammonia water to obtain a reaction solution; mix the reaction solution and gluconic acid in a mass ratio of 10:1 and then stir the reaction 2h, after the reaction is completed, filter and separate to obtain the complexed filter residue, mix the obtained complexed fil...

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PUM

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Abstract

The invention relates to a preparation method of intumescent flame-retardant rubber and belongs to the technical field of preparation of rubber products. Firstly, an iron-rich animal organ, namely, pig liver, is taken as a raw material, impure protein is removed through enzymolysis and heating, a pig liver extract containing rich heme iron is obtained, the heme iron is reduced to ferrous ions withhydrochloric acid, enzymolysis filtrate containing rich ferrous irons is obtained, polyhydroxycarboxylic acid type gluconic acid is added to the enzymolysis filtrate, the ferrous ions in the enzymolysis filtrate are complexed by use of the complexing performance of the gluconic acid, complexing filter residues and pentaerythritol are subjected to an esterification reaction, a product obtained after esterification is esterified with ammonium polyphosphate, a self-made intumescent flame retardant is obtained, finally, the intumescent flame retardant is blended with a rubber matrix, genipin andother auxiliary materials, and the intumescent flame-retardant rubber is prepared. Due to good compatibility between the flame retardant and the rubber matrix, the prepared intumescent flame-retardantrubber has good mechanical property, excellent flame retardance, good water tightness and wide application prospects.

Description

technical field [0001] The invention relates to a preparation method of intumescent flame-retardant rubber, which belongs to the technical field of rubber product preparation. Background technique [0002] At present, the commonly used method to improve the flame retardancy of rubber is to add halogen-containing flame retardants or inorganic metal hydroxides. Halogen flame retardants have the advantages of many varieties, high flame retardant efficiency, and moderate price, but they will produce a lot of smoke and highly corrosive and toxic substances during the combustion process. At the same time, it is often necessary to add di Antimony acts as a synergist to further increase the amount of smoke produced. However, the flame retardant efficiency of inorganic metal hydroxide is low, the filling amount is large, and the compatibility with the matrix rubber is poor, which brings a relatively large negative impact on the physical and mechanical properties of the product and p...

Claims

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Application Information

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IPC IPC(8): C08L9/06C08L85/02C08K13/02C08K3/26C08K3/22C08K5/09C08K5/47C08G79/04
CPCC08G79/04C08K2003/2296C08K2003/265C08K2201/011C08L9/06C08L2201/02C08L85/02C08K13/02C08K3/26C08K3/22C08K5/09C08K5/47
Inventor 石磊张晶
Owner 石磊
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