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Lubricant for wood-plastic composites as well as preparation method and application lubricant

A wood-plastic composite material and lubricant technology, applied in the field of wood-plastic composite materials, can solve the problems of WPC extrusion processing difficulties, unstable flow, poor product quality, etc., achieve excellent processing lubrication, improve mechanical properties, and simple method Effect

Active Publication Date: 2015-07-22
GUANGZHOU ZAISEN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high wood fiber filling content makes WPC extrusion processing difficult, mainly manifested in the appearance of unstable flow and surface tearing.
This leads to poor product quality and low processing efficiency. It is usually necessary to add additives such as coupling agents, lubricants, light stabilizers, water absorbents, and antibacterial agents, the most important of which are coupling agents and lubricants.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: Preparation of lubricant for wood-plastic composite material

[0031] (1) Preparation of higher aliphatic alcohols: add 90g of vegetable oil and 10g of copper-chromium catalyst into the autoclave, seal it well, heat to 320°C, carry out hydrocracking under the condition of 8MPa with hydrogen, and keep the temperature for 5 hours. After the reaction, the oil layer was separated, washed with water, dried, distilled under reduced pressure, and centrifuged to obtain the supernatant to obtain the product higher fatty alcohol.

[0032] (2) Preparation of lubricant for wood-plastic composite materials: add 40 g of higher fatty alcohol, 25 g of paraffin, 20 g of maleic anhydride and 5 g of calcium carbonate prepared above into a closed reaction kettle and mix and stir in turn, heat up to 120 ° C, add high temperature Molecular dispersant (PAA) 10g, mixed and reacted under nitrogen protection for 4 hours, cooled to room temperature, to obtain a lubricant for wood-pl...

Embodiment 2

[0034] Embodiment 2: Preparation of lubricant for wood-plastic composite material

[0035] (1) The preparation of higher fatty alcohols is the same as in Example 1.

[0036] (2) Preparation of lubricant for wood-plastic composite materials: Add 80g of higher fatty alcohol, 5g of paraffin wax, 10g of PE-g-MA and 3g of calcium carbonate prepared above into a closed reaction kettle for mixing and stirring, and heat up to 150°C. Add 2 g of polymer dispersant (PAA), mix and react for 6 hours under nitrogen protection, and cool to room temperature to obtain a special lubricant for wood-plastic composite materials.

[0037] (3) Effect: Apply the above-mentioned lubricant for wood-plastic composite materials to PVC wood-plastic composite materials, the addition amount is 3wt%, the surface of the obtained product is smooth and delicate, the tensile strength is increased by 30%, and the bending strength is increased. 27%.

Embodiment 3

[0038] Embodiment 3: Preparation of lubricant for wood-plastic composite material

[0039] (1) The preparation of higher fatty alcohols is the same as in Example 1.

[0040] (2) Preparation of lubricant for wood-plastic composite materials: Add 50 g of higher fatty alcohol, 7 g of paraffin wax, 30 g of PP-g-MA and 9 g of calcium carbonate prepared above into a closed reaction kettle for mixing and stirring, and heat up to 200 ° C. Add 4 g of polymer dispersant (PAA), mix and react for 8 hours under nitrogen protection, and cool to room temperature to obtain a special lubricant for wood-plastic composite materials.

[0041] (3) Effect: Apply the above-mentioned lubricant for wood-plastic composite materials to PVC wood-plastic composite materials, the addition amount is 3wt%, the surface of the obtained product is smoother, the tensile strength is increased by 27%, and the bending strength is increased by 25%. %.

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Abstract

The invention belongs to the technical field of wood-plastic composites, and discloses a lubricant for wood-plastic composites as well as a preparation method and an application of the lubricant. The lubricant for wood-plastic composites is obtained through the reaction of the following raw materials in parts by weight: 40-80 parts of higher fatty alcohol, 5-25 parts of lubricant, 10-30 arts of maleic anhydride and / or maleic anhydride grafted polymer, and 2-10 parts of polymer dispersant; the higher fatty alcohol is prepared by a method comprising the following steps: hydrocracking vegetable oil for 4-8 hours at 320 DEG C and 8-15 MPa under the catalysis of a copper-chromium catalyst, performing separation to obtain the higher fatty alcohol. According to the invention, the lubricant has functions of coupling agent and lubricant, effectively improves the compatibility between the resin and filler as well as mechanical properties of products, has high temperature lubrication property and low temperature anti-sticking property, can be used in wood-plastic composites to improve the appearance quality, tensile strength and impact strength; in the preparation method, an organic solvent is not used, so that environment protection is achieved.

Description

technical field [0001] The invention belongs to the technical field of wood-plastic composite materials, and in particular relates to a lubricant for wood-plastic composite materials and a preparation method and application thereof. Background technique [0002] Wood-plastic composite (WPC) is a new type of material with new structure and excellent comprehensive performance formed by compounding wood powder or wood fiber and thermoplastic polymer through melt processing. It has good weather resistance, microbial resistance, The advantages of recyclability, biodegradability, and environmental friendliness have shown unique advantages in the fields of construction, furniture, decoration, transportation, and automotive linings, and have developed rapidly. This year, with the depletion of global resources and the increasing awareness of social environment, higher requirements are put forward for the application of wood and petrochemical products. In this context, the wood-plast...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L23/06C08L23/12C08L25/06C08L55/02C08K13/02C08K5/05C08K5/01C08K5/1539C08K3/26C08L51/06C08L51/00
CPCC08L27/06C08L97/02C08L2205/035C08L91/06C08L33/02C08K5/05C08K5/1539C08K2003/265C08L51/06C08L51/00C08L35/06C08L23/06
Inventor 刘少北
Owner GUANGZHOU ZAISEN NEW MATERIAL TECH CO LTD
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