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High-weather-resistance PC/AES alloy and preparation method thereof

A technology of alloy and rutile titanium dioxide, which is applied in the field of auto parts materials, can solve problems such as difficult to meet long-term use, decreased weather resistance of PC/AES alloys, and low mechanical properties of polycarbonate

Active Publication Date: 2021-10-01
WUHAN JINFA TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The relatively low mechanical properties of polycarbonate limit its application in engineering plastics
[0003] Acrylonitrile-EPDM-styrene copolymer (AES) is also a widely used material, and its weather resistance is better than that of acrylonitrile-butadiene-styrene copolymer (ABS). It is often used in engineering plastics PC and AES are used to prepare PC / AES alloys. PC / AES alloys are mainly used in outdoor applications. Compared with high weather-resistant materials such as ASA and AES, PC / AES alloys have better physical and mechanical properties and heat resistance, but due to PC The ester group is the weak point of chain scission under light, and its weather resistance is not good, which leads to the decrease of weather resistance of PC / AES alloy, and it is difficult to meet the requirements of long-term outdoor use

Method used

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  • High-weather-resistance PC/AES alloy and preparation method thereof
  • High-weather-resistance PC/AES alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3、 Embodiment 6 and Embodiment 9-10

[0058] Preparation of modified rutile titanium dioxide:

[0059] Add rutile titanium dioxide to a clean volumetric flask and add deionized water to make a titanium dioxide slurry. The ratio of rutile titanium dioxide to deionized water is 500g:1L. Pour the prepared rutile titanium dioxide slurry into In a container equipped with stirring equipment; add sodium metaphosphate to the slurry to adjust the pH to 9-10, while controlling the stirring speed to 200 rpm; drop silicon dioxide evenly into the reaction slurry, and the amount of silicon dioxide is rutile 2wt% of the amount of titanium dioxide, when adding silicon dioxide dropwise, the rate of addition is 10drop / min, and the pH value of the reaction system is controlled in 9-10 by adding sodium metaphosphate simultaneously, after adding silicon dioxide dropwise, Aging at 70°C water bath temperature for 4 hours; pour the slurry into a Buchner funnel for suction filtration, and wash with deionized water; transfer the filter cak...

Embodiment 4

[0068] Preparation of modified rutile titanium dioxide:

[0069] Add rutile titanium dioxide to a clean volumetric flask and add deionized water to make a rutile titanium dioxide slurry. The ratio of rutile titanium dioxide to deionized water is 500g:1L, and the prepared rutile titanium dioxide slurry is Pour into a container equipped with stirring equipment; add sodium metaphosphate to the slurry to adjust the pH to 9-10, while controlling the stirring speed to 150 rpm; drop silicon dioxide evenly into the reaction slurry, the amount of silicon dioxide It is 5wt% of the amount of rutile titanium dioxide. When adding silicon dioxide dropwise, the dropping speed is 8drop / min. At the same time, the pH value of the reaction system is controlled within 9-10 by adding sodium metaphosphate. Afterwards, age for 4 hours at a water bath temperature of 75°C; pour the slurry into a Buchner funnel for suction filtration, and wash with deionized water; transfer the filter cake to a porcela...

Embodiment 5

[0078] Preparation of modified rutile titanium dioxide:

[0079] Add rutile titanium dioxide to a clean volumetric flask and add deionized water to make a rutile titanium dioxide slurry. The ratio of rutile titanium dioxide to deionized water is 500g:1L, and the prepared rutile titanium dioxide slurry is Pour into a container equipped with stirring equipment; add sodium metaphosphate to the slurry to adjust the pH to 9-10, while controlling the stirring speed to 150 rpm; drop silicon dioxide evenly into the reaction slurry, the amount of silicon dioxide It is 1wt% of the amount of rutile titanium dioxide. When adding silicon dioxide dropwise, the dropping speed is 12drop / min. At the same time, the pH value of the reaction system is controlled within 9-10 by adding sodium metaphosphate. Afterwards, age for 4 hours at a water bath temperature of 70°C; pour the slurry into a Buchner funnel for suction filtration, and wash with deionized water; transfer the filter cake to a porcel...

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Abstract

The invention discloses a high-weather-resistance PC / AES alloy and a preparation method thereof. The high-weather-resistance PC / AES alloy comprises the following components: polycarbonate, an acrylonitrile-styrene copolymer, AES rubber powder, modified rutile titanium dioxide and silicone master batch. In the weather-resistant PC / AES alloy, under the combined action of the acrylonitrile-styrene copolymer with the specific AN content and the surface-modified rutile titanium dioxide, the weather resistance of the PC / AES alloy can be remarkably improved, meanwhile, the processing performance of the alloy material is guaranteed, and the application range of the PC / AES alloy in the field of automobile parts is widened.

Description

technical field [0001] The invention belongs to the field of auto parts materials, in particular to a high weather resistance PC / AES alloy and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is one of the important engineering plastics. Polycarbonate (PC) can be divided into aliphatic, aromatic, aliphatic-aromatic and other types according to the structure of the ester group. The relatively low mechanical properties of polycarbonate limit its application in engineering plastics. [0003] Acrylonitrile-EPDM-styrene copolymer (AES) is also a widely used material, and its weather resistance is better than that of acrylonitrile-butadiene-styrene copolymer (ABS). It is often used in engineering plastics PC and AES are used to prepare PC / AES alloys. PC / AES alloys are mainly used in outdoor applications. Compared with high weather-resistant materials such as ASA and AES, PC / AES alloys have better physical and mechanical properties and heat resistanc...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L25/12C08L51/04C08L83/04C08K9/10C08K3/22C08K3/36
CPCC08L69/00C08K2003/2241C08L2201/08C08L25/12C08L51/04C08L83/04C08K9/10C08K3/22C08K3/36
Inventor 郭涛何浏炜李文龙丁正亚王琪余朦山林荣涛程文超付伟
Owner WUHAN JINFA TECH CO LTD