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Polyolefin wood-plastic composite material and preparation method thereof

A technology of wood-plastic composite material and manufacturing method, which is applied in the field of polyolefin wood-plastic composite material and its manufacturing, can solve the problems of poor compatibility, poor solid mechanical properties, poor toughness, etc., and achieve improved toughness and environmental resistance Good stress cracking property and good rigidity

Pending Publication Date: 2017-01-25
SHANDONG LVSEN WOOD PLASTIC COMPOSITE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although the rigidity of homopolypropylene is good, the toughness is poor
Compared with copolymerized polyethylene, homopolyethylene also has the problem of poor toughness.
Wood-plastic composite materials based on homopolymerized polypropylene and polyethylene resins have poor mechanical properties due to their poor compatibility.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Prepare each component according to the following weight percentages:

[0038] Impact copolymer polypropylene A, 39.5wt%; wherein, the impact copolymer polypropylene A is copolymerized with ethylene, the ethylene content is 6.0-8.0wt%, and the density is 0.900g / cm 3 Around, the melt mass flow rate is 2.0 ~ 4.0g / 10min;

[0039] Copolymerized high-density polyethylene, 6wt%;

[0040] Wood powder, 40wt%;

[0041] Calcium carbonate, 10wt%;

[0042] Coupling agent, 2wt%;

[0043] Maleic anhydride grafted impact copolymer polypropylene, 2.5 wt%.

[0044] During the preparation of polyolefin wood-plastic composites, wood flour and inorganic fillers were dried at 80°C for 4 hours. Mix the dried wood flour and inorganic filler with impact copolymerized polypropylene and copolymerized high-density polyethylene, calcium carbonate, coupling agent, and compatibilizer in a high-speed mixer for 10 minutes, and then add it to the extruder at 180 Extrusion granulation or product m...

Embodiment 2

[0052] Prepare each component according to the following weight percentages:

[0053] Impact copolymer polypropylene A, 24.0wt%; wherein, the impact copolymer polypropylene A is copolymerized with ethylene, the ethylene content is 6.0-8.0wt%, and the density is 0.900g / cm 3 Around, the melt mass flow rate is 2.0 ~ 4.0g / 10min;

[0054] Impact copolymer polypropylene B, 8.0wt%; wherein, the impact copolymer polypropylene B is copolymerized with ethylene, the ethylene content is 9.0-14.0wt%, and the density is 0.900g / cm 3 About; Copolymerized high-density polyethylene, 6.0wt%;

[0055] Wood powder, 50wt%;

[0056] Calcium carbonate, 10wt%;

[0057] Coupling agent, 2wt%.

[0058] During the preparation of polyolefin wood-plastic composites, wood flour and inorganic fillers were dried at 80°C for 4 hours. Mix the dried wood flour and inorganic filler with impact copolymerized polypropylene and copolymerized high-density polyethylene, calcium carbonate, coupling agent, and compa...

Embodiment 3

[0066] Prepare each component according to the following weight percentages:

[0067] Impact copolymer polypropylene A, 35.5 wt%;

[0068] Impact copolymer polypropylene B, 8.0 wt%;

[0069] Copolymerized high-density polyethylene, 12.0wt%;

[0070] Wood powder, 30wt%;

[0071] Calcium carbonate, 10wt%;

[0072] Coupling agent, 2wt%;

[0073] Maleic anhydride grafted impact copolymer polypropylene, 2.5 wt%.

[0074] During the preparation of polyolefin wood-plastic composites, wood flour and inorganic fillers were dried at 80°C for 4 hours. Mix the dried wood powder and inorganic filler with impact copolymerized polypropylene and copolymerized high-density polyethylene, calcium carbonate, coupling agent and compatibilizer in a high-speed mixer for 10 minutes, and then add it to the extruder Extrusion granulation or product molding at 180°C.

[0075] After testing, the main properties of the polyolefin wood-plastic composite material prepared in this embodiment are as fo...

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Abstract

The invention discloses a polyolefin wood-plastic composite material and a preparation method thereof. The polyolefin wood-plastic composite material is prepared from polyolefin resin, a coupling agent, a compatilizer, a lubricating agent, wood powder and inorganic filler, wherein the polyolefin resin comprises an impact propylene copolymer and polyethylene; the polyethylene is high-density polyethylene; the polyolefin resin accounts for 30 to 70 weight percent of the polyolefin wood-plastic composite material. The preparation method comprises the following steps: preparing or presetting the polyolefin resin, the coupling agent, the compatilizer, the lubricating agent, the wood powder and the inorganic filler according to a set proportion; drying the wood powder and the inorganic filler; mixing the wood powder and the inorganic filler with the impact propylene copolymer, the high-density polyethylene, the coupling agent, the compatilizer and the lubricating agent in a high-speed mixer to obtain a mixture, and adding the mixture into an extruder for extrusion granulation or product molding.

Description

technical field [0001] The invention relates to a wood-plastic composite material and a preparation method thereof, in particular to a polyolefin wood-plastic composite material and a preparation method thereof. Background technique [0002] Polyolefin wood-plastic composites usually refer to polyethylene, polypropylene or a blend of the two as the base material, adding wood powder, rice husk powder and other biomass fillers, mineral filler lubricants and interface modifiers. Polyolefin-based wood-plastic composites. It is superior to PVC-based wood-plastic composite materials in terms of toughness, environmental protection and combustion emissions, and has been widely used in indoor and outdoor floors, wall panels, guardrails, fences, flower boxes, seats, etc. [0003] Generally, polypropylene includes homopolypropylene, random copolymer polypropylene and impact copolymer polypropylene. There are obvious differences among the three in terms of composition, structure and p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L23/08C08L23/14C08L51/06C08K3/26C08K3/34
Inventor 谭洪生安云鹏公艳艳蔡红珍张金伟冯启
Owner SHANDONG LVSEN WOOD PLASTIC COMPOSITE
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