Method for nano-dawsonite/lanthanum stannate/graphene oxide compounded flame-retardant modified PC (polycarbonate)/ABS (acrylonitrile butadiene styrene) alloy

A graphene composite and nanosheet technology is applied in the field of polymer materials to achieve good flame retardant synergy and improve flame retardant efficiency.

Inactive Publication Date: 2017-07-28
郭峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no composite use of nano-sheet sodium aluminumite, lanthanum stannate, and graphene oxide for flame-retardant modified PC / ABS alloys.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for nanosheet sodium aluminumite / lanthanum stannate / graphene oxide composite flame-retardant modified PC / ABS alloy, comprising the following steps:

[0029] (1) Preparation of graphene oxide-coated lanthanum stannate flame-retardant PC:

[0030] 1a. Mix the aqueous solution of lanthanum nitrate with a molar concentration of 0.1mol / L and the aqueous solution of sodium stannate with a molar concentration of 0.1mol / L by equal volumes, stir quickly and evenly, and set aside;

[0031] 1b. Ultrasonic dispersing the graphene oxide powder in water to prepare a graphene oxide dispersion with a mass concentration of 0.8 mg / mL for use;

[0032] 1c. Mix the solution prepared in step 1a with the graphene oxide dispersion prepared in step 1b according to a mass ratio of 2:1, stir well and add saturated ammonia solution to adjust the pH of the system to 10, stir and react at room temperature for 3h, and the reaction ends After standing still for 24 hours, stir at 80°C water ba...

Embodiment 2

[0046] A method for nanosheet sodium aluminumite / lanthanum stannate / graphene oxide composite flame-retardant modified PC / ABS alloy, comprising the following steps:

[0047] (1) Preparation of graphene oxide-coated lanthanum stannate flame-retardant PC:

[0048] 1a. Mix the aqueous solution of lanthanum nitrate with the molar concentration of 0.1mol / L and the aqueous solution of sodium stannate with the molar concentration of 0.1mol / L by equal volumes, stir quickly and evenly, and set aside;

[0049] 1b. ultrasonically disperse the graphene oxide powder in water to prepare a graphene oxide dispersion with a mass concentration of 1.1 mg / mL for use;

[0050] 1c. Mix the solution prepared in step 1a with the graphene oxide dispersion prepared in step 1b according to a mass ratio of 2.5:1, stir well and add saturated ammonia solution to adjust the pH of the system to 11, stir and react at room temperature for 4h, and the reaction ends After standing still for 36 hours, stir at 85°...

Embodiment 3

[0064] A method for nanosheet sodium aluminumite / lanthanum stannate / graphene oxide composite flame-retardant modified PC / ABS alloy, comprising the following steps:

[0065] (1) Preparation of graphene oxide-coated lanthanum stannate flame-retardant PC:

[0066] 1a. Mix the aqueous solution of lanthanum nitrate with the molar concentration of 0.1mol / L and the aqueous solution of sodium stannate with the molar concentration of 0.1mol / L by equal volumes, stir quickly and evenly, and set aside;

[0067] 1b. Ultrasonic dispersing the graphene oxide powder in water to prepare a graphene oxide dispersion with a mass concentration of 1.4 mg / mL for use;

[0068] 1c. Mix the solution prepared in step 1a with the graphene oxide dispersion prepared in step 1b according to a mass ratio of 3:1, stir well and add saturated ammonia solution to adjust the pH of the system to 12, stir and react at room temperature for 5h, and the reaction ends After standing still for 48 hours, stir at 90°C wa...

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Abstract

The invention discloses a method for a nano-dawsonite / lanthanum stannate / graphene oxide compounded flame-retardant modified PC (polycarbonate) / ABS (acrylonitrile butadiene styrene) alloy. The method includes the steps: preparing graphene oxide coated lanthanum stannate flame-retardant PC; preparing nano-dawsonite loaded graphene oxide flame-retardant ABS; preparing the PC / ABS alloy and the like. According to the method, graphene oxide coated lanthanum stannate is prepared by an ammonia precipitation-calcination method, the graphene oxide coated lanthanum stannate flame-retardant PC is prepared by an in-situ polymerization method, nano-dawsonite loaded graphene oxide is prepared by a hydrothermal synthesis method, the nano-dawsonite loaded graphene oxide flame-retardant ABS is prepared by an in-situ polymerization method, the graphene oxide coated lanthanum stannate flame-retardant PC and the nano-dawsonite loaded graphene oxide flame-retardant ABS are molten and blended to prepare the PC / ABS alloy, the flame-retardant efficiency of the PC / ABS alloy is remarkably improved, and the flame-retardant performance of the PC / ABS alloy can reach grade UL-94V-0.

Description

technical field [0001] The invention relates to a method for composite flame-retardant modified PC / ABS alloy of nano-sheet sodium aluminumite / lanthanum stannate / graphene oxide, and belongs to the field of polymer materials. Background technique [0002] PC / ABS alloy is a modified engineering plastic synthesized by kneading. Among them, PC is polycarbonate, and ABS is a copolymer of acrylonitrile (A), butadiene (B) and styrene (S). This modified plastic has better performance than pure PC and ABS, for example: improved impact resistance, improved heat resistance, increased hardness and so on. PC / ABS is widely used in the manufacture of electronics, electrical appliances, communications, automobiles, chemicals, medicine, biology and other fields due to its unique heat resistance, impact resistance, stress crack resistance, good dimensional stability and chemical stability. Due to the special requirements of the application field, people pay more and more attention to its fla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L55/02C08K13/06C08K9/10C08K3/24C08K9/12C08K3/04C08G64/30C08G64/06C08F279/04C08F220/44C08F212/08
CPCC08L69/00C08F279/04C08G64/06C08G64/30C08K2201/011C08L2201/02C08L55/02C08K13/06C08K9/10C08K3/24C08K9/12C08K3/04C08F220/44
Inventor 郭峰
Owner 郭峰
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