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Flame-retardant and reinforced integrative natural rubber and preparation method thereof

A natural rubber and fossil technology, which is applied in the field of flame retardant and enhanced integrated natural rubber and its preparation, can solve the problem of incompatibility of flame retardants, easy agglomeration and uneven dispersion, poor interface compatibility between flame retardants and natural rubber materials, etc. problem, to achieve the effect of improving flame retardant efficiency, good thermal stability, and excellent flame retardant performance

Active Publication Date: 2017-03-22
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because the strong polarity of the flame retardant makes it difficult to be well compatible with the natural rubber material matrix
This makes the flame retardant easy to migrate in the polymer matrix, and easy to agglomerate and disperse unevenly in the matrix, thus affecting the flame retardant and mechanical properties of the rubber material.
Therefore, there is an urgent need for a method to solve the problem of poor interfacial compatibility between flame retardants and natural rubber materials, and on this basis, some technical means are used to improve the mechanical properties of materials accordingly, in order to prepare a high flame retardancy, high thermal stability Natural rubber composite materials with excellent mechanical properties

Method used

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  • Flame-retardant and reinforced integrative natural rubber and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0016] Add hydroquinone and phenylphosphoryl dichloride at a molar ratio of 1:3 to a three-necked flask containing 100ml of dioxane, condense and reflux at 60°C under nitrogen protection for 12 hours with magnetic stirring, and the stirring speed is 850r / min, the product was washed 3 times with ice water, and vacuum-dried for 20 hours to obtain a self-made flame retardant. Add 3 g of graphite powder, 9 g of potassium permanganate, 1.2 g of sodium nitrate and 70 mL of concentrated sulfuric acid into a three-necked flask and mix evenly. Stir and react under ice for 2 hours with a stirring speed of 500 r / min, and then raise the temperature to 20- The reaction was continued for 10 h at 35 °C. Finally, 8 mL of 30% hydrogen peroxide solution was added to the reaction solution. After the reaction was completed, 1 mL of hydrazine hydrate was added to the three-necked flask, and 12 mL of thionyl chloride was added to the reaction system, and the reaction was carried out at 45°C for 5 ...

Embodiment 2

[0018] Add hydroquinone and phenylphosphoryl dichloride at a molar ratio of 1:3 to a three-necked flask containing 100ml of dioxane, condense and reflux at 60°C under nitrogen protection for 12 hours with magnetic stirring, and the stirring speed is 850r / min, the product was washed 3 times with ice water, and vacuum-dried for 20 hours to obtain a self-made flame retardant. Add 3 g of graphite powder, 9 g of potassium permanganate, 1.2 g of sodium nitrate and 70 mL of concentrated sulfuric acid into a three-necked flask and mix evenly. Stir and react under ice for 2 hours with a stirring speed of 500 r / min, and then raise the temperature to 20- The reaction was continued for 10 h at 35 °C. Finally, 8 mL of 30% hydrogen peroxide solution was added to the reaction solution. After the reaction was completed, 1 mL of hydrazine hydrate was added to the three-necked flask, and 12 mL of thionyl chloride was added to the reaction system, and the reaction was carried out at 45°C for 5 ...

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Abstract

Flame-retardant and reinforced integrative natural rubber and a preparation method thereof relate to rubber and a preparation method thereof. The raw material formula consists of natural rubber(NR), epoxy natural rubber(ENR), chloroformylated graphene, a self-made flame retardant, stearic acid, zinc oxide, accelerator CZ, antioxidant 4010, carbon black and liquid paraffin. Epoxy natural rubber and natural rubber have a similar structure and good interfacial compatibility therebetween, ring-opening reaction between epoxy groups on the surface of epoxy natural rubber and active hydrogen can be performed. Therefore, according to the invention, the self-made high-efficient and environment-friendly flame retardant is grafted to the ENR matrix, chloroformylated graphene is employed to perform reinforcement modification on the ENR modified by the flame retardant, and then the flame retardant and graphene are grafted to the rubber matrix by co-vulcanization of natural rubber and epoxy natural rubber during processing. According to the invention, dispersibility of the flame retardant and graphene is well improved and thus flame retardancy and mechanical properties of the material are easy to improve.

Description

technical field [0001] The invention relates to a rubber and a preparation method thereof, in particular to a flame-retardant reinforced integrated natural rubber and a preparation method thereof. [0002] technical background [0003] Natural rubber (NR) is widely used in various fields due to its excellent physical and mechanical properties. However, its inherent high flammability limits the application of NR. With the continuous advancement of science and technology, people hope to prepare natural rubber materials with better mechanical properties and certain fire safety performance. Therefore, improving the mechanical properties of flame-retardant natural rubber and its products is a scientific research problem to be solved urgently at home and abroad. As we all know, adding flame retardants to rubber is a direct and effective way to make rubber flame retardant. At present, most of the widely used flame retardants are halogen flame retardants. Although the flame retarda...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L15/00C08K13/02C08K5/09C08K3/22C08K3/04C08K3/06C08C19/24
CPCC08C19/24C08L7/00C08L2201/02C08L2205/03C08L15/00C08K13/02C08K5/09C08K2003/2296C08K3/04C08K3/06
Inventor 王娜王升亢萍付琬璐
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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