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Weather-resistant polypropylene composition as well as preparation method and application thereof

A weather-resistant polypropylene and composition technology, applied in the field of engineering plastics, can solve problems such as chain breaking and degradation, poor weather resistance of polypropylene materials, etc., and achieve the effect of improving weather resistance and low cost

Pending Publication Date: 2022-06-24
KINGFA SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are unstable tertiary carbon atoms on the polypropylene chain, and it is easy to form tertiary carbon free radicals in the presence of light and oxygen, resulting in chain scission and degradation of polypropylene molecular chains, and it is easy to enter a spontaneous oxidation cycle under the action of oxygen process, which ultimately leads to poor weather resistance of polypropylene materials

Method used

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  • Weather-resistant polypropylene composition as well as preparation method and application thereof
  • Weather-resistant polypropylene composition as well as preparation method and application thereof
  • Weather-resistant polypropylene composition as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～16

[0076] This example provides a series of weather-resistant polypropylene compositions, the weight parts of each component in the formula and the performance test results are shown in Table 1 and Table 2.

[0077] Formulation (parts) and performance test results of Table 1 Examples 1-8

[0078]

[0079]

[0080] The formula (part) and performance test result of table 2 embodiment 9~16

[0081]

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Abstract

The invention relates to a weather-resistant polypropylene composition as well as a preparation method and application thereof. The weather-resistant polypropylene composition comprises polypropylene, a flexibilizer, a filler, carbon black, an antioxidant, a light stabilizer and other auxiliaries. According to the weather-resistant polypropylene composition provided by the invention, the specific carbon black is added, so that the weather resistance can be effectively improved under the condition of adding a small amount of the antioxidant and the light stabilizer, the weather-resistant polypropylene composition has the advantage of low cost, and the problem of appearance defects caused by migration of the antioxidant, the light stabilizer and the like can be well avoided.

Description

technical field [0001] The invention belongs to the technical field of engineering plastics, and particularly relates to a weather-resistant polypropylene composition and a preparation method and application thereof. Background technique [0002] Polypropylene has become the most widely used general-purpose plastic due to its better mechanical properties, rigidity and strength. However, there are unstable tertiary carbon atoms on the polypropylene chain, which are easy to form tertiary carbon radicals in the presence of light and oxygen, resulting in chain scission and degradation of the polypropylene molecular chain, and easy to enter the spontaneous oxidation cycle under the action of oxygen. process, which eventually leads to poor weather resistance of polypropylene materials. Carbon black is the most commonly used plastic colorant at present, and carbon black is an inorganic pigment with good light stability. In the process of outdoor use, the obtained plastic parts can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/08C08K3/04C08K3/34C08K5/134C08K5/526
CPCC08L23/12C08K2201/006C08L2201/08C08L23/0815C08K3/04C08K3/34C08K5/1345C08K5/526
Inventor 杨波陈平绪叶南飚罗忠富苏娟霞卢朝亮
Owner KINGFA SCI & TECH CO LTD
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