Plastic-steel door and window section bar with excellent mechanical properties and method for preparing plastic-steel door and window section bar

Abstract

The invention discloses a plastic-steel door and window section bar with the excellent mechanical properties and a method for preparing the plastic-steel door and window section bar, and belongs to the technical field of doors and windows. Raw materials for the plastic-steel door and window section bar comprise, by weight, 30-50 parts of polyvinyl chloride, 20-40 parts of acrylonitrile-styrene copolymers, 10-20 parts of polybenzimidazole, 2-8 parts of microcrystalline paraffin wax, 8-15 parts of modified alkali-free glass fibers and 5-12 parts of modified lycra fibers. The method includes carrying out melt extrusion on the raw materials; carrying out mold forming to obtain the plastic-steel door and window section bar. The plastic-steel door and window section bar and the method have the advantages that the polyvinyl chloride is used as a matrix, components such as the modified alkali-free glass fibers and the modified lycra fibers are added into the polyvinyl chloride, accordingly, the high-strength and high-toughness plastic-steel door and window section bar can be prepared, and the problems of poor comprehensive mechanical properties and the like of existing plastic-steel door and window section bars can be solved by the aid of the plastic-steel door and window section bar and the method.

Description

technical field [0001] The invention relates to door and window technology, in particular to a plastic-steel door and window profile with excellent mechanical properties and a preparation method thereof. Background technique [0002] Plastic steel door and window profiles refer to a profile based on PVC (polyvinyl chloride). Compared with traditional aluminum alloy door and window profiles, plastic steel door and window profiles have the advantages of good thermal insulation, good sound insulation, and good air tightness, but also have disadvantages such as poor rigidity, so plastic steel door and window profiles cannot completely replace aluminum alloy door and window profiles at present. . [0003] Although in the prior art, by filling some inorganic fillers in the PVC system, the rigidity of the plastic-steel door and window profiles can be improved, but due to the poor compatibility of the inorganic fillers with the PVC system, with the addition of the inorganic fillers...

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Problems solved by technology

Compared with traditional aluminum alloy door and window profiles, plastic steel door and window profiles have the advantages of good thermal insulation, good sound insulation, and good air tightness, but also have disadvantages such as poor rigidity, so plastic steel door and window profiles cannot completely replace aluminum alloy door and window profiles at present.

[0003] Although in the prior art, by filling some inorganic fillers in the PVC system, the rigidity of the plastic-steel door and window profiles can be improved, but due to the poor compatibility of the inorganic fillers with the PVC system, with the addition of the inorganic fillers, it will lead to The toughness and impact strength of the obtained plastic-steel door and window profiles are greatly reduced

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