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Long fiber reinforced polyolefin wood-plastic composite material and preparation method thereof

A wood-plastic composite material and polyolefin technology, which is applied in the field of long-fiber reinforced polyolefin wood-plastic composite material and its preparation, can solve problems such as unreinforced wood-plastic material, and achieve the effect of good performance and wide application range.

Inactive Publication Date: 2015-11-18
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method only co-extrudes PVC wood-plastic particles and continuous fiber-reinforced PP sheets to form composite panels, and the wood-plastic materials themselves are not reinforced.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] formula:

[0037] High-density polyethylene, 41.5%;

[0038] Long glass fiber reinforced polyethylene strip material (length 8mm, fiber content 50%, preparation method: after the continuous glass fiber bundle is preheated and dispersed by the preheating roller, after the molten polyethylene resin is impregnated through the dipping die , formed by a flat die to obtain a continuous fiber-reinforced polyethylene tape, then cut into a strip-shaped material with a length of 8 mm, the preheating temperature of the dispersing roller: 190 ° C, the temperature of the dipping die: 190 ° C), 20.0%;

[0039] Wood flour, 20%;

[0040] Calcium carbonate, 10%;

[0041] Titanate coupling agent, 0.5%;

[0042] Maleic anhydride grafted polyethylene, 8.0%.

[0043] Preparation:

[0044] 1) Dry the required wood powder and calcium carbonate, and dry them in an oven at 80°C for 4 hours;

[0045] 2) Add the dried wood flour, calcium carbonate and titanate coupling agent to a high-speed...

Embodiment 2

[0051] formula:

[0052] High-density polyethylene, 36.5%;

[0053] Long glass fiber reinforced polyethylene granular material (length 50mm, fiber content 50%, preparation method: after the continuous glass fiber bundle is preheated and dispersed by the preheating roller, after the molten polyethylene resin is impregnated through the dipping die, Molded by a cylindrical die to obtain continuous fiber-reinforced polyethylene strips, and then cut into granular materials with a length of 50mm, the preheating temperature of the dispersing roller: 210°C, the temperature of the dipping die: 210°C), 25.0%;

[0054] Wood powder, 30.0%;

[0055] Silane ester coupling agent, 0.5%;

[0056] Maleic anhydride grafted polyethylene, 8.0%.

[0057] Preparation method: The internal mixer chamber set temperature is 210°C, the set temperatures of the feeding section, plasticizing section, and anti-spill section of the injection molding machine barrel are as follows: 150°C, 210°C, and 210°C, and...

Embodiment 3

[0060] formula:

[0061] High-density polyethylene, 59.5%;

[0062] Long glass fiber reinforced polyethylene strip material (length 5mm, fiber content 50%, preparation method: cutting length is 5mm, all the other are identical with embodiment 1), 10.0%;

[0063] Wood flour, 30.0%;

[0064] Silane coupling agent, 0.5%.

[0065] Preparation method: The internal mixer chamber set temperature is 170°C, the set temperatures of the feeding section, plasticizing section, and anti-spilling section of the injection molding machine barrel are: 140°C, 170°C, and 170°C, and the rest are the same as in Example 1. same.

[0066] The long fiber reinforced polyolefin wood-plastic composite material prepared by the above method has the following mechanical properties: tensile strength: 31.27MPa; bending strength: 41.7MPa; impact strength: 5.4kJ / m 2 ; Hardness (HD): 64.33.

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Abstract

The invention discloses a long fiber reinforced polyolefin wood-plastic composite material and a preparation method thereof. The polyolefin wood-plastic composite material is composed of polyolefin resin, a long fiber reinforced polyolefin granular material or long fiber reinforced polyolefin strip material, a compatilizer, a coupling agent, wood powder and inorganic filler. The preparation method includes: subjecting the materials to mixing in a banbury mixer, then sending the material into an extruder to conduct extrusion and grain cutting or extrusion molding of product, or sending the material into an injection molding machine to perform injection molding. Adding of the long fiber reinforced polyolefin composite material provided by the invention can greatly improve the strength, stiffness, toughness, hardness and other mechanical properties of the wood-plastic composite material, thereby effectively enhancing the stiffness, toughness, surface hardness, nail-holding power and the like of wood-plastic boards and profile products. By means of the mixer, the long fiber reinforced polyolefin composite material or other recovered materials and wood powder, the inorganic filler and other materials can be mixed evenly. The wood-plastic material itself is reinforced, and has better performance and wider scope of application.

Description

technical field [0001] The invention belongs to the technical field of wood-plastic composite material and its preparation, in particular to a long-fiber reinforced 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, bamboo powder, rice husk powder and other biomass fillers, mineral fillers, lubricants and interface modification. Polyolefin-based wood-plastic composites composed of agents and the like. 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] The existing general wood-plastic composite materials have low mechanical properties such as strength, stiffness, toughness, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L97/02C08L51/06C08K7/14C08K3/26C08K3/34C08K5/10B29C45/76B29C47/92B29B7/28B29C48/92
CPCB29B7/28B29C45/76C08L23/06C08L23/12C08L2205/025C08L2205/035C08L2205/08C08L2205/16C08L2207/062C08L2207/20C08L97/02C08L51/06C08K7/14C08K2003/265C08K5/10C08K5/54C08K3/34Y02P70/10
Inventor 谭洪生陈冠宇公艳艳
Owner SHANDONG UNIV OF TECH
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