A kind of anti-ultraviolet polypropylene composition and its prepared polypropylene and polypropylene film

A polypropylene composition and polypropylene technology, applied in the field of plastic processing, can solve the problems of reduced UV shielding ability, limited improvement effect, and agglomeration of large particles, achieving small particle size, narrow particle size distribution, and not easy to agglomerate Effect
CN107383595BActive Publication Date: 2019-10-01XIAMEN JUFU PLASTIC PRODS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAMEN JUFU PLASTIC PRODS
Publication Date
2019-10-01

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Abstract

The invention discloses surface modified nano-cerium oxide as well as a preparation method and use thereof. The invention further provides a polypropylene composition containing the modified nano-cerium oxide and polypropylene and a polypropylene film which are prepared from the composition. The surface modified nano-cerium oxide is prepared by the steps of reacting by virtue of large-particle cerium oxide and a surface modifier in a high-temperature and high-pressure microcell generated by laser bombardment so as to reduce the size of cerium oxide to a nano scale, and grafting the surface with the surface modifier. The surface modified nano-cerium oxide has the beneficial effects that on one hand, cerium oxide can be effectively subjected to surface treatment; on the other hand, nano-scale cerium oxide can be prepared from micron-scale cerium oxide, so that the material cost is saved; and furthermore, a columned cerium oxide solid target can continuously sink into a flow liquid phase, so that the preparation method has the advantage that the continuous operation is realized.
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Description

Technical field

[0001] The invention relates to the technical field of plastic processing, in particular to an ultraviolet-resistant polypropylene composition and polypropylene and polypropylene films prepared therefrom. Background technique

[0002] Ultraviolet rays in sunlight are the main cause of aging of polymer materials. Polymer materials will absorb ultraviolet rays and initiate self-oxidation, leading to polymer degradation. This process is called photoredox or photoaging. Although ultraviolet light only accounts for about 5% of sunlight, its energy is huge, and its energy is enough to break the chemical bonds of polymers, break and cross-link the molecular chains, and cause malignant changes in mechanical properties. At the same time, the color will also change.

[0003] Ultraviolet rays can be divided into short-wave regions (ie UVC: 200nm-290nm), medium-wave regions (ie UVB: 290nm-320nm) and long-wave regions (ie UVA: 320nm-400nm) according to wavelength.

[0004] When s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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