Organosilane crosslinked polyethylene wood-plastic composite material and preparation method thereof

A wood-plastic composite material and silane crosslinking technology, which is applied in the field of wood-plastic composite material and its preparation, can solve problems such as strength, toughness, and creep resistance performance degradation, achieve low water expansion rate, prolong service life, and improve compatibility effect

Inactive Publication Date: 2015-02-25
HONGLONGJIANG ORIENT SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that various properties such as strength, toughness, and creep resistance decrease due to water absorption during long-term outdoor use of PE wood-plastic composite materials, and provides a silane cross-linked polyethylene wood-plastic composite material and its preparation method

Method used

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  • Organosilane crosslinked polyethylene wood-plastic composite material and preparation method thereof
  • Organosilane crosslinked polyethylene wood-plastic composite material and preparation method thereof

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specific Embodiment approach 1

[0019] Specific embodiment one: This embodiment is a silane crosslinked polyethylene wood-plastic composite material in parts by weight consisting of 100 parts of polyethylene, 40 to 100 parts of plant fiber, 2 to 5 parts of lubricant, 1 to 5 parts It is prepared from 0.1-0.5 parts of silane coupling agent, 0.1-0.5 parts of initiator, 0.005-0.05 parts of catalyst and 0.1-0.25 parts of antioxidant.

[0020] The silane cross-linked wood-plastic composite material prepared in this embodiment is to solve the problem that the strength, toughness, creep resistance and other properties of the PE wood-plastic composite material are reduced due to water absorption during long-term outdoor use. By adding peroxide initiator and silane coupling agent in the compounding process, the composite material forms a polyethylene matrix network cross-linked structure, and at the same time strengthens the interfacial adhesion of the cross-linked polyethylene wood-plastic composite. The principle of...

specific Embodiment approach 2

[0024] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the polyethylene is one of high-density polyethylene, low-density polyethylene and linear low-density polyethylene or a mixture of several of them; The plant fiber is wood powder, straw powder, bamboo powder or chaff powder. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0025] Specific embodiment three: the difference between this embodiment and one of the specific embodiments one or two is that the lubricant is one of stearic acid, zinc stearate, calcium stearate and polyethylene wax or A mixture of several of them; the silane coupling agent is vinyl silane. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses an organosilane crosslinked polyethylene wood-plastic composite material and a preparation method thereof, relates to wood-plastic composite materials and preparation methods and aims at solving the problem of lowering of performance like strength, tenacity and creep resistance of a PE wood-plastic composite material in the long-time outdoor using process due to water absorbing. The organosilane crosslinked polyethylene wood-plastic composite material is prepared by polyethylene, plant fibers, lubricant, silane coupling agent, initiator, catalyst and antioxidant. The preparation method includes drying and grinding the plant fibers; mixing the plant fibers with polyethylene and the lubricant; mixing with the silane coupling agent, the initiator, the catalyst and the antioxidant; utilizing a double-screw extruder to obtain the organosilane crosslinked polyethylene wood-plastic composite material.

Description

technical field [0001] The invention relates to a wood-plastic composite material and a preparation method thereof. Background technique [0002] Wood-plastic composite material is a kind of green environmental protection material that has emerged in recent years. Its products are mainly used as substitutes for natural wood. The main varieties of wood-plastic composite materials are PE-based, PP-based and PVC-based. Among them, PE-based wood-plastic The main raw materials of composite materials (WPC) are agricultural and forestry waste (such as wood powder, bamboo powder, bran powder and other plant fibers) and polyethylene plastic or recycled polyethylene plastic. Since the wood-plastic composite material is filled with a large amount of plant fibers, it inevitably has a certain degree of water absorption. Although the plant fibers in WPC are covered by plastic, the water absorption rate is much lower than that of wood, but when WPC is soaked in water for a long time, it s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/06C08L97/02C08F255/02B29C47/92B29B9/06B29C48/92
Inventor 马宝红鲍文波姜国发张惠
Owner HONGLONGJIANG ORIENT SCI & TECH
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