High-fiber polyester composite wood plastic and production method thereof

A high-fiber, composite wood technology, applied in the field of wood-plastic materials, can solve the problems of low performance of wood-plastic products and mismatching processing temperature, etc., and achieve good economic benefits and social effects, high bending strength, and good practicability.

Inactive Publication Date: 2016-11-02
NANJING XUHUA SUNDI NEW BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the use of general-purpose plastics such as PE, PVC, and PP as base materials, the performance of the obtained wood-plastic products is not high, and can only be used in low-end places.
[0003] The bending strength and flexural modulus of engineering plastic modified PVC are much higher than general plastics, and have broad application prospects in wood-plastic products. However, since the melting point of modified PVC generally exceeds 220 ° C, and wood fibers contain resistant High-temperature cellulose (the thermal degradation initiation temperature exceeds 250°C), also contains hemicellulose and lignin whose thermal degradation initiation temperature is lower than 200°C, and it is difficult to solve the mismatch of processing temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Modified PVC: Dry the modified PVC and lithium chloride in an oven until the water content is below 0.1%, mill the lithium chloride in a ball mill, pass through a 80-mesh screen, and divide each component according to the following parts by weight: Weighing: 50 parts of modified PVC, 10 parts of lithium chloride, 35 parts of PE, 5 parts of maleic anhydride grafted PE, mixed in an internal mixer for 5 minutes, and the temperature was set at 240 ° C. After mixing, the high-fiber poly The ester complex alloy is crushed in the crusher.

[0022] Wood-plastic preparation: the weight fractions of the following components are respectively: 50 parts of high-fiber polyester composite alloy, 40 parts of wood fiber, 5 parts of zinc stearate, and 5 parts of iron oxide red. The above materials are mixed in a mixer and granulated by a granulator, and the granulated material is extruded into shape.

Embodiment 2

[0024] Modified PVC: Dry the modified PVC and lithium chloride in an oven until the moisture content is below 0.1%, mill the lithium chloride in a ball mill, pass through a 100-mesh sieve, and divide each component according to the following parts by weight: Weighing: 70 parts of modified PVC, 15 parts of lithium chloride, 10 parts of PP, 5 parts of maleic anhydride grafted PP, mixed in a mixer for 8 minutes, and then granulated. The temperature of each zone of the granulator is set at 180-280°C.

[0025] Wood-plastic preparation: the weight fractions of the following components are respectively: 80 parts of high-fiber polyester composite alloy, 10 parts of wood fiber, 5 parts of calcium stearate, and 5 parts of iron oxide yellow. The above materials are mixed in a mixer and granulated by a granulator, and the granulated material is injection molded.

Embodiment 3

[0027] Modified PVC: Dry the modified PVC and calcium chloride in an oven until the water content is below 0.1%, ball-mill the calcium chloride in a ball mill, pass through a 100-mesh screen, and divide each component according to the following parts by weight: Weighing: 60 parts of modified PVC, 10 parts of calcium chloride, 10 parts of PE, 10 parts of PP, 5 parts of GMA grafted PE, 5 parts of maleic anhydride grafted PP, mixed in the internal mixer for 5 minutes, the temperature was set Set at 240°C, the high-fiber polyester composite alloy after kneading is crushed in a crusher.

[0028] Wood-plastic preparation: The weight fractions of the following components are: 25 parts of high-fiber polyester composite alloy, 70 parts of wood fiber, 3 parts of stearic acid, and 2 parts of titanium dioxide. The above materials are mixed in a mixer and granulated by a granulator, and the granulated material is extruded into shape.

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PUM

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Abstract

The invention discloses a high-fiber polyester composite wood plastic, and belongs to the technical field of wood plastic materials. The high-fiber polyester composite wood plastic comprises, by weight, 25-50 parts of a high-fiber polyester complex, 5-80 parts of wooden fibers, 1-8 parts of vegetable cellulose and 1-6 parts of a pigment. The invention also discloses a production method of the wood plastic. Addition of metal halide modified PVC reduces the moisture-proof temperature to 200DEG C or below, and simultaneous addition of PE and PP improves the shock resistance of the modified PVC in order to make the wood plastic product have high bending strength, bending elasticity modulus and unnotched impact resistance and partially substitute structure materials; and the production method of the high-fiber polyester composite wood plastic has very good practicality, and can generate good economic and social effects.

Description

technical field [0001] The invention belongs to the technical field of wood-plastic materials, and in particular relates to a high-fiber polyester composite wood-plastic and a preparation method thereof. Background technique [0002] In recent years, due to the advantages of environmental protection, recyclability, and non-toxicity, wood-plastic has been gradually applied to outdoor landscape garden materials. However, due to the use of general-purpose plastics such as PE, PVC, and PP as base materials, the performance of the obtained wood-plastic products is not high, and can only be used in low-end places. [0003] The bending strength and flexural modulus of engineering plastic modified PVC are much higher than general plastics, and have broad application prospects in wood-plastic products, but because the melting point of modified PVC generally exceeds 220 ° C, and wood fibers contain resistant High-temperature cellulose (the thermal degradation initiation temperature e...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08L27/06C08L23/06C08L51/06C08L23/12C08K13/02C08K3/16C08K5/098C08K3/22
CPCC08L97/02C08L27/06C08L2205/025C08L2205/035
Inventor 李靖马长城许世华何军
Owner NANJING XUHUA SUNDI NEW BUILDING MATERIALS
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