Lignin/PVC decorative film sheet and preparation method thereof

Abstract

The invention discloses lignin / polyvinyl chloride (PVC) decorative film sheet. The lignin / PVC decorative film sheet comprises the following components in parts by weight: 30-80 parts of PVC resin, 5-60 parts of lignin, 1-5 parts of a calcium-zinc stabilizer, 2-10 parts of a non-toxic plasticizer, 2-10 parts of a compatilizer, 5-10 parts of inorganic minerals and 1-5 parts of lubricants. The invention also provides a preparation method of the lignin / PVC decorative film sheet. The preparation method comprises the following steps: preparing lignin; adding the raw materials into a high-speed mixeraccording to a ratio, and carrying out hot mixing and cold mixing to obtain a primary mixed material; carrying out melt extrusion on the primary mixed material through a double-screw extruder to obtain lignin / PVC decorative film sheet particles; and carrying out calendaring on the lignin / PVC decorative film sheet particles through a calender, carrying out cooling, and finally carrying out post-treatment, namely trimming, winding, checking and warehousing. The decorative film sheet provided by the invention is used for cover decoration of furniture, floors, cabinets, integrated ceilings of inner walls, and the like. The decorative film sheet prepared by the preparation method disclosed by the invention has the advantages of scratch resistance, wear resistance, tension resistance, good toughness, good thermal stability and the like.

Description

technical field [0001] The invention relates to the field of PVC decorative membranes, in particular to a lignin / PVC decorative membrane and a preparation method thereof. Background technique [0002] Existing PVC decorative diaphragms are mainly used for veneer decoration of furniture, floors, cabinets, interior wall collection ceilings, etc. Traditional PVC diaphragms are mixed with PVC resin with stabilizers, processing aids and reinforcing agents, and then plasticized, extruded, etc. It is made by extrusion, calendering, and peeling, but it has defects such as scratch resistance, wear resistance, and poor toughness. [0003] At present, more than 95% of lignin is still used as industrial pulping waste, which is directly discharged into rivers with wastewater or burned after being concentrated. The discharge of pulping wastewater not only causes waste of resources, but also pollutes the environment. Resource utilization has practical significance to the development of so...

AI Technical Summary

Problems solved by technology

[0002] Existing PVC decorative membranes are mainly used for veneer decoration of furniture, floors, cabinets, interior wall collection ceilings, etc. Traditional PVC membranes are mixed with PVC resin with stabilizers, processing aids and reinforcing agents, and then plasticized, extruded, etc. Extrusion, calendering, and peeling, but it has defects such as scratch resistance, wear resistance, and poor toughness.

[0003] At present, more than 95% of lignin is still used as industrial pulping waste, which is directly discharged into rivers with wastewater or burned after being concentrated. The discharge of pulping wastewater not only causes waste of resources, but also pollutes the environment. Resource utilization has practical significance to the development of social economy and environmental protection

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