Boron-carbide-filled modified plastic and manufacturing method thereof

Abstract

The invention discloses a boron-carbide-filled modified plastic which is prepared from the following raw materials in parts by weight: 100 parts of low density polyethylene, 4.5-6.8 parts of nano antimony tin oxide, 1-2 parts of nano titanium white, 2-3 parts of epoxy soybean oil, 1-3 parts of straw ash, 0.4-0.8 part of nano silicon dioxide, 0.1-0.3 part of trimethoprim lactate, 0.2-0.4 part of barium chromate, 0.4-0.5 part of boron carbide, 1.2-1.6 parts of maleic anhydride graft compatilizer and a right amount of anhydrous ethanol. The manufacturing method comprises the following steps: adding the nano materials into the coupling agent, activating by stirring, uniformly mixing with the linear polyethylene, nano silicon dioxide, boron carbide and the like, and carrying out melt extrusion granulation with a double screw extruder. The prepared plastic has the characteristics of favorable wear resistance, favorable heat stability, ultraviolet irradiation resistance, aging resistance, high strength and higher chemical resistance. When the modified plastic is subjected to deep processing into a plastic film for vegetable greenhouses, the plastic film has the advantages of short degradation period, favorable low-temperature resistance, obvious heat insulation effect, self-cleaning function, bacteria resistance and high light transmittance.

Description

technical field [0001] The invention relates to the technical field of plastic modification, in particular to a boron carbide-filled 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 plastics and enginee...

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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.