Heat oxidization, ultraviolet light resistant glass fiber reinforced polypropylene composite material

Abstract

The present invention relates to a glass fiber reinforcing polypropylene composite material of heat-resistant oxidation and ultraviolet resistance. The composition and ratio is: 34 percent to 84 percent of polypropylene, 5 percent to 15 percent of grafted polypropylene, 10 percent to 50 percent of glass fiber, 0.1 percent to 2 percent of heat stabilizer, 0.1 percent to 2 percent of composite antioxidant, and 0.1 percent to 1 percent of composite UV-resistant agent. The above percentages are all weight percentages. The present invention uses the highly efficient heat-resistant and stable system, and the prepared composite material has good heat-resistant, anti-oxidation and aging-resistant performances; each physical and mechanical performance of the material is excellent. At the same time, the cost is reduced.

Description

technical field [0001] The invention relates to a glass fiber reinforced polypropylene composite material resistant to heat, oxidation and ultraviolet light and a preparation method thereof, belonging to the field of polymer composite materials. Background technique [0002] Polypropylene material has high rigidity, low relative density, high tensile strength, good stress crack resistance and chemical resistance, so it has been widely used in automobiles, home appliances, medical and other fields. Moreover, after the polypropylene material is filled or reinforced, its physical and mechanical properties, such as strength, rigidity, material dimensional stability and heat resistance, are further improved, which is sufficient to compete with higher-cost engineering plastics in many applications. However, one disadvantage of polypropylene material is its low resistance to thermal and oxidative aging, so all polypropylene products must be added with antioxidants. Ordinary antiox...

AI Technical Summary

Problems solved by technology

In the field of automobiles and household appliances, many parts are thin-walled parts with a wall thickness of about 2 mm. Therefore, for these parts with thin walls and high requirements for thermal and oxidative aging resistance, ordinary antioxidants It is difficult for the system to achieve the desired effect, especially for some parts with a wall thickness of 1.0-2.0 mm and a long-term heat-resistant temperature above 150 ° C. It is also difficult to meet the requirements with glass fiber reinforced polypropylene composite materials with reinforced formula.

[0004] At the same time, the requirements for UV light resistance of parts are also increasing, and the use of antioxidants alone cannot meet the requirements.

And about the research and discussion of this aspect, there have not been targeted detailed reports in the relevant literature.