Sunshine-resistant and ageing-resistant modified plastic and preparation method thereof

Abstract

The invention discloses sunshine-resistant and ageing-resistant modified plastic, which is prepared from the following raw materials in parts by weight: 35-45 parts of polystyrene, 55-65 parts of polyvinyl chloride, 4.9-6.8 parts of nano antimony tin oxide, 1-2 parts of nanometer titanium dioxide, 2-4 parts of polyethylene glycol 200, 1-2 parts of aluminic acid ester, 0.2-0.4 part of cadmium sulfate, 1.1-2.3 parts of polyoxyethylated castor oil, 0.1-0.3 part of bromotriazine, 0.4-0.7 part of lead stearate and a proper amount of absolute ethyl alcohol. The method comprises the following steps: firstly, adding a nano material to a coupling agent, stirring, activating, grafting and mixing with polystyrene, polyvinyl chloride, bromotriazine, polyoxyethylated castor oil and the like evenly; and fusing, extruding and pelletizing through a twin-screw extruder. The sunshine resistance, the ageing-resistance, the tensile strength and the shock strength of the prepared plastic are significantly improved; the service life is certainly prolonged; and the heat resistance is also certainly improved.

Description

technical field [0001] The invention relates to the technical field of plastic modification, in particular to a sunlight-resistant and anti-aging modified plastic and a manufacturing method thereof. Background technique [0002] Our country has a vast territory and a complex climate. The use of plastic greenhouses for vegetable cultivation has played a special and important role in alleviating the contradiction between supply and demand of vegetables in the off-season. It has significant social benefits and huge economic benefits. Special plastic greenhouses for agricultural production and construction It is required that its light transmittance, heat preservation, tensile strength and aging resistance are superior to ordinary agricultural films. The existing technology cannot meet these requirements, and traditional plastics need to be modified to obtain modified plastics. Modified plastics refer to plastic products that are processed on the basis of general-purpose plastic...

AI Technical Summary

Problems solved by technology

[0002] Our country has a vast territory and a complex climate. The use of plastic greenhouses for vegetable cultivation has played a special and important role in alleviating the contradiction between supply and demand of vegetables in the off-season. It has significant social benefits and huge economic benefits. Special plastic greenhouses for agricultural production and construction It is required that its light transmittance, heat preservation, tensile strength and aging resistance are superior to ordinary agricultural films. The existing technology cannot meet these requirements, and traditional plastics need to be modified to obtain modified plastics.