High-plant fiber content wood-plastic composite material and preparation method thereof

A wood-plastic composite material and plant fiber technology, which is applied in the field of wood-plastic composite material and its preparation, can solve the problems of affecting the comprehensive performance of the composite material, reducing the impact strength and tensile strength of the composite material, and failing to transmit the stress effectively. High-value utilization, improved dimensional stability, and improved interface compatibility

Inactive Publication Date: 2018-02-23
山东宜居新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, plant fibers contain a large number of polar hydroxyl functional groups, which make them exhibit strong chemical polarity, while PVC plastics are non-polar and hydrophobic, and there is a high interfacial energy difference between the two. Difficult to achieve full interface fusion
And because there are a large number of hydroxyl groups on the surface of plant fibers, it is easy to form hydrogen bonds and aggregate, so that plant fibers cannot be uniformly dispersed in the plastic matrix, resulting in poor dispersion, resulting in stress that cannot be effectively transmitted at the interface, and the impact of the composite material. The strength and tensile strength will be significantly reduced, thereby affecting the overall performance of the composite material
[0004] In view of the small amount of plant fiber added in the formula of the prior art, it is not conducive to the high-value utilization of fiber waste resources

Method used

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  • High-plant fiber content wood-plastic composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0043] A wood-plastic composite material with high plant fiber, comprising the following raw materials in parts by weight: 53 parts of PVC resin powder; 35 parts of plant fiber powder; 0.5 part of titanate coupling agent; 2 parts of dimethyl ester; 4 parts of environmental stabilizer; 1.5 parts of dioctyl ester; 2 parts of polyethylene wax; 2 parts of acrylic polyester.

[0044] A preparation method of wood-plastic composite material with high plant fiber, comprising the steps of:

[0045] 1) Drying the plant fiber powder at a temperature of 110°C to make the water content <1%;

[0046] 2) Add the dried plant fiber powder into a high-speed mixer, stir and mix at a high speed at 120°C, the speed of the high-speed mixer is 1500 rpm, and the ratio of plant fiber powder to titanate coupling agent is 70 : 1 Add titanate coupling agent and continue stirring for 10min to obtain modified plant fiber powder;

[0047] 3) Mix the modified plant fiber powder obtained in step 2) with PVC...

Embodiment 2

[0051]A wood-plastic composite material with high plant fiber, comprising the following raw materials in parts by weight: 52 parts of PVC resin powder; 40 parts of plant fiber powder; 1 part of titanate coupling agent; 1 part of dimethyl ester; 2 parts of environmental stabilizer; 1 part of dioctyl ester; 1 part of polyethylene wax; 2 parts of acrylic polyester.

[0052] A preparation method of wood-plastic composite material with high plant fiber, comprising the steps of:

[0053] 1) Drying the plant fiber powder at a temperature of 110°C to make the water content <1%;

[0054] 2) Add the dried plant fiber powder into a high-speed mixer, stir and mix at a high speed at 120°C, the speed of the high-speed mixer is 1500 rpm, and the ratio of plant fiber powder to titanate coupling agent is 70 : 1 Add titanate coupling agent and continue stirring for 10min to obtain modified plant fiber powder;

[0055] 3) Mix the modified plant fiber powder obtained in step 2) with PVC resin p...

Embodiment 3

[0059] A wood-plastic composite material with high plant fiber, comprising the following raw materials in parts by weight: 43 parts of PVC resin powder; 45 parts of plant fiber powder; 2 parts of titanate coupling agent; 2 parts of dimethyl ester; 3 parts of environmental stabilizer; 2 parts of dioctyl ester; 1 part of polyethylene wax; 1 part of acrylic polyester.

[0060] A preparation method of wood-plastic composite material with high plant fiber, comprising the steps of:

[0061] 1) Drying the plant fiber powder at a temperature of 110°C to make the water content <1%;

[0062] 2) Add the dried plant fiber powder into a high-speed mixer, stir and mix at a high speed at 120°C, the speed of the high-speed mixer is 1500 rpm, and the ratio of plant fiber powder to titanate coupling agent is 22.5 : 1 Add titanate coupling agent and continue stirring for 10min to obtain modified plant fiber powder;

[0063] 3) Mix the modified plant fiber powder obtained in step 2) with PVC re...

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Abstract

The invention discloses a high-plant fiber content wood-plastic composite material. The high-plant fiber content wood-plastic composite material comprises the following raw materials in parts by weight: 30-50 parts of PVC resin powder, 30-50 parts of plant fiber powder, 0.3-2 parts of a coupling agent, 1-5 parts of a plasticizing regulator, 2-6 parts of an environment-friendly stabilizer, 1-3 parts of a processing aid, 1-3 parts of a lubricating agent and 1-5 parts of a toughening agent. The high-plant fiber content wood-plastic composite material prepared according to a formula provided by the invention has the elongation at break of 2-7%, the bending strength of 25-35 MPa, the Shore hardness of 71-80 HD and the moisture content of 0.2-0.8% which are far higher than physical and chemicalperformance indexes of the wood-plastic composite material stated in Chinese standard GB/T24137; the dimensional stability is greatly improved; the problem that the wood-plastic composite material iseasy to deform during using is solved, agricultural and forestry wastes are fully utilized, the wastes are turned into treasures, and high-value utilization of waste plant fiber resources is achieved.

Description

technical field [0001] The invention belongs to the technical field of wood-plastic composite materials. More specifically, it relates to a wood-plastic composite material with high plant fiber and its preparation method. Background technique [0002] Wood-plastic composite material is a new type of environmentally friendly composite material made of plant fiber powder (wood powder, straw, forestry three residues, etc.) and thermoplastics as the main raw materials through high-tech processes such as physics, chemistry and biological engineering. Its zero formaldehyde, insect resistance, corrosion resistance, chemical reaction resistance, low water absorption and other advantages of both wood and plastic make it widely used in transportation, interior decoration, construction, furniture products, garden landscape and other fields. [0003] The promotion and application of wood-plastic composite materials can solve the problem of environmental pollution caused by waste plasti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L97/02C08L23/06C08K13/02C08K5/12C08K3/015C08H8/00
CPCC08L27/06C08H8/00C08L2205/035C08L2205/08C08L2205/16
Inventor 赵悦英杨明李冲顾元喆朱莽王振
Owner 山东宜居新材料科技有限公司
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