Grass-plastic composite material and preparation method thereof

Through the combination of rape straw rind powder and bamboo chip powder and hot-mixing machine mixing hot pressing technology, combined with polymer and magnesium sulfide cement, the ratio of composite foaming agent and the extrusion forming temperature are optimized, and the problems of poor mechanical properties and poor water resistance of Hepu composite materials are solved, and the Hepu composite materials with high mechanical properties and good water resistance are achieved.

CN119639064APending Publication Date: 2025-03-18JIANGSU AIJIA SMART HOME CO LTD
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Patent Information

Application Number
CN202411895761.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-23
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

The existing Hemoplastic composites have problems with poor mechanical properties and poor water resistance.

Method used

Through the combination of rape straw rind powder and bamboo chip powder, combined with polymer and magnesium sulfide cement, the mixing and hot pressing technology of a hot mixer is used to adjust the proportion of composite foaming agent and the extrusion forming temperature to optimize the cell structure.

Benefits of technology

The load bearing capacity, rigidity, bending strength and bending resistance of Hepu composite materials are significantly improved, their uniformity and orderliness are enhanced, their tensile strength, tensile modulus and tensile performance are improved, and water resistance is improved.

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Abstract

The invention relates to the technical field of composite materials, in particular to a straw-plastic composite material and a preparation method thereof. The invention aims to solve the problems of poor mechanical property and poor water resistance of the existing straw-plastic composite material. Through compounding of the rape straw skin powder, the bamboo sawdust powder and the polymer, the load bearing capacity, the rigidity, the bending strength and the bending resistance of the straw-plastic composite material are remarkably improved; meanwhile, the uniformity and orderliness of the straw-plastic composite are improved, the tensile strength and the tensile modulus are increased, and the tensile property is further improved; by adjusting the ratio of MgO to MgSO4 in the magnesium oxysulfate cement, the addition amount of calcium carbonate and the variety of the coupling agent, the density of the straw-plastic composite material and the compactness of the internal structure are enhanced, and the axial tensile mechanical property of the straw-plastic composite material is further improved; the preparation process and the extrusion molding process are improved, the proportion of the composite foaming agent and the extrusion molding temperature are adjusted, the foam structure of the straw-plastic composite material is optimized, and the prepared straw-plastic composite material has the characteristics of high mechanical property and good water resistance.
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