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A production method and equipment for a three-dimensional reinforced wood-plastic composite material

A wood-plastic composite material and a production method technology, which are applied in the field of production methods and equipment for three-dimensional reinforced wood-plastic composite materials, can solve the problems of thermoplastic resin softening by heating, limited reinforcement effect, difficult performance, etc., and achieve improved strength and toughness. Effect of avoiding interface problems, good mechanical properties

Active Publication Date: 2020-11-06
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Unidirectional reinforcement, single performance enhancement effect, poor interface compatibility between reinforcement fiber and wood-plastic matrix, very limited reinforcement and toughening effect, and the performance of the reinforced product cannot meet the requirements of load-bearing materials;
[0006] 2. The production process is complex, and most of them adopt multi-stage molding methods, which lead to high production costs and poor stability of material properties;
[0007] 3. When using wood-plastic products at high outdoor temperatures in summer, the thermoplastic resin will be heated and softened, making the reinforcement effect more limited under high temperature conditions
For wood-plastic composite boards, the width-thickness ratio is large (generally greater than 10). When fiber mesh is used to reinforce board-like wood-plastic materials, the force on both sides of the board will be significantly greater than that of the plane, resulting in wood-plastic composite materials from the middle. Broken, the corresponding plate cannot be produced
It is difficult to effectively enhance the performance of the existing wood-plastic composite panels

Method used

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  • A production method and equipment for a three-dimensional reinforced wood-plastic composite material
  • A production method and equipment for a three-dimensional reinforced wood-plastic composite material
  • A production method and equipment for a three-dimensional reinforced wood-plastic composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] The raw materials for the preparation of the wood-plastic base material include: 60 parts of HDPE plastic, 20 parts of wood fiber, 4 parts of coupling agent, 10 parts of inorganic filler, 3 parts of lubricant and 3 parts of melt enhancer according to the proportion by mass. Preparation methods include:

[0082] S1. Wood-plastic parison extrusion: put the raw materials used for the wood-plastic base material into the mixer and mix evenly, and then use the granulator to form wood-plastic particles, and the wood-plastic particles are put into the screw extruder, and the wood-plastic particles are put into the screw extruder. After conveying, melting and plasticizing, mixing and homogenizing, and pressurizing and densifying, a square wood-plastic parison with a length x width of 100.0mm x 100.0mm is extruded from the molding die mouth;

[0083] S2. Surface pre-cooling: The surface of the wood-plastic parison extruded from the molding die is pre-cooled through a cooling die....

Embodiment 2

[0088] An online braided pipe network three-dimensionally reinforced and toughened wood-plastic composite material and a preparation method thereof. The raw materials for the preparation of the wood-plastic substrate include: 60 parts of PVC plastic, 10 parts of wood fiber, 4 parts of interfacial compatibilizer, 10 parts of inorganic filler, 3 parts of lubricant, and 3 parts of melt enhancer according to the proportion by mass. , 6 parts heat stabilizer and 4 parts antioxidant. Preparation methods include:

[0089] S1. Wood-plastic parison extrusion: The raw materials used for the preparation of the wood-plastic base material are sequentially put into the mixer to mix evenly, and then the raw materials are put into the one-step wood-plastic extruder, conveyed by screw, melted and pre-plasticized , After melting and plasticizing, mixing and homogenizing and pressurizing and compacting, extrude a square wood plastic parison with a length x width of 80.0mm x 80.0mm from the mold...

Embodiment 3

[0095] An online braided pipe network three-dimensionally reinforced and toughened wood-plastic composite material and a preparation method thereof. The raw materials for the preparation of the wood-plastic substrate include: 40 parts of PP plastic, 40 parts of wood fiber, 6 parts of coupling agent, 4 parts of inorganic filler, 3 parts of lubricant, 4 parts of heat stabilizer and 3 parts of antioxidants.

[0096] Preparation methods include:

[0097] S1. Wood-plastic parison extrusion: The raw materials used for the preparation of the wood-plastic base material are sequentially put into the mixer to mix evenly, and then the raw materials are put into the one-step wood-plastic extruder, conveyed by screw, melted and pre-plasticized , After melting and plasticizing, mixing and homogenizing, and pressurizing and densifying, a circular wood-plastic parison with a radius of 40mm is extruded from the molding die mouth;

[0098] S2. Surface pre-cooling: The wood-plastic parison ext...

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Abstract

The invention discloses a production method and equipment for a three-dimensional reinforced wood-plastic composite material. The production method comprises the following steps: extruding a wood-plastic parison; pre-cooling the surface of the extruded wood-plastic parison; arranging a pipe network on the pre-cooled wood-plastic parison in a sleeving manner to form the wood-plastic parison coatedwith the pipe network; carrying out mold-pressing shaping on the wood-plastic parison coated with the pipe network; and sizing and cooling to obtain the three-dimensional reinforced wood-plastic composite material. According to some examples, the three-dimensional reinforced wood-plastic composite material can be effectively prepared, and a reinforced wood-plastic base material forms penetrating nail structures in network holes of the fiber pipe network, so that the reinforcement effect of the fiber pipe network can be exerted as much as possible while an interface problem is avoided. The prepared material is high in mechanical performance, and the own surface decorative property and aesthetic property of the material are not influenced. According to some examples, a simple production process, high efficiency, relatively low production energy consumption, and a low overall production cost are achieved.

Description

technical field [0001] The invention relates to a production method and equipment for a three-dimensional reinforced wood-plastic composite material, in particular to a production method and equipment for a three-dimensional reinforced wood-plastic composite material. Background technique [0002] As a green and environmentally friendly composite material, wood-plastic composite material mainly uses thermoplastic polymers such as polyethylene, polypropylene and polyvinyl chloride to replace the usual resin adhesives, and more than 35%-70% of wood flour, rice husk, straw The waste plant fibers are mixed into new wood materials, and then obtained by extrusion, molding and injection molding. [0003] Compared with wood, wood-plastic composite material has a series of excellent properties, and is also a green and renewable material, which is easy to prepare into various profiles. In recent years, it has developed rapidly in the world and is widely used in interior decoration, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C48/00B29C48/885B29C48/90
CPCB29C48/0021B29C48/885B29C48/90B29C48/911
Inventor 欧荣贤唐伟王清文刘涛易欣孙理超刘珍珍郝笑龙
Owner SOUTH CHINA AGRI UNIV