Novel environmental-aging-resistant PP material and preparation method thereof

Abstract

The invention discloses a novel environmental-aging-resistant PP material and a preparation method thereof. The novel environmental-aging-resistant PP material comprises the following raw materials by the weight percentage: 90-97% of PP, 1-5% of xylogen, 1-3% of PP-g-MAH, 0-0.5% of a light stabilizer, 0-0.5% of an antioxidant, and 0-2% of other additives. The novel environmental-aging-resistant PP material has the advantages: 1, the xylogen can be used for partially or completely replacing traditional additives, and can effectively solves PP surface blooming and emission problems; and 2, the prepared PP material is simple in production process, low in cost and easy to industrialize.

Description

technical field [0001] The invention relates to a novel environmental aging-resistant PP material and a preparation method thereof, belonging to the field of polymer modification and processing. Background technique [0002] Polypropylene raw materials are rich in sources and low in price. Its excellent mechanical strength and processability are widely used in various fields such as automobiles, electrical appliances, daily necessities and furniture packaging. Due to the presence of a large number of unstable tertiary carbon atoms on the PP main chain, its hydrogen atoms are easily taken away by oxygen under light and heat conditions, triggering a chain degradation reaction of the PP material, resulting in a gradual loss of its mechanical properties. In general, polypropylene materials with black masterbatch need to add a large amount of antioxidants and light stabilizers to meet the requirements of use, but common low-molecular-weight light stabilizers and ordinary antioxid...

AI Technical Summary

Problems solved by technology

Due to the existence of a large number of unstable tertiary carbon atoms on the PP main chain, its hydrogen atoms are easily taken away by oxygen under the conditions of light and heat, which triggers the chain degradation reaction of PP materials, resulting in the gradual loss of its mechanical properties.

In general, polypropylene materials with black masterbatch need to add a large amount of antioxidants and light stabilizers to meet the requirements of use, but common low-molecular-weight light stabilizers and ordinary antioxidants 1010, 168, DSTP synergistic systems, in the Under high temperature or ultraviolet light irradiation, the two additives are easy to precipitate on the surface, causing the problem of "frost"

Moreover, the above-mentioned system will also lead to an increase in the TVOC content of the material to a certain extent, which will have adverse effects on the human body and limit its scope of use to a certain extent.

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