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Fire-proof and damp-proof PVC compound stabilizer wood-plastic composite and preparation method thereof

A compound stabilizer and wood-plastic technology, which is 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 Effect

Inactive Publication Date: 2016-08-17
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 flexural strength and flexural elastic modulus of engineering plastic PVC composite stabilizers are much higher than general plastics, and have broad application prospects in wood-plastic products, but because the melting point of PVC composite stabilizers generally exceeds 220 ° C, and wood fibers except Contains high-temperature-resistant cellulose (the thermal degradation initiation temperature exceeds 250°C), and also contains hemicellulose and lignin whose thermal degradation initiation temperature is lower than 200°C, and the processing temperature mismatch is difficult to solve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Modified PVC composite stabilizer: Dry the PVC composite stabilizer 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 separate the components by Weigh the following parts by weight: 50 parts of PVC composite stabilizer, 10 parts of lithium chloride, 35 parts of PE, 5 parts of maleic anhydride grafted PE, mix in an internal mixer for 5 minutes, set the temperature at 240°C, and knead The final fireproof and moistureproof PVC composite stabilizer alloy is crushed in the crusher.

[0021] Wood-plastic preparation: the weight fractions of the following components are respectively: 50 parts of fireproof and moisture-proof PVC composite stabilizer 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

[0023] Modified PVC composite stabilizer: Dry the PVC composite stabilizer 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 screen, and separate the components by Weigh the following parts by weight: 70 parts of PVC composite stabilizer, 15 parts of lithium chloride, 10 parts of PP, 5 parts of maleic anhydride grafted PP, mix in a mixer for 8 minutes, and then granulate. The temperature of each zone of the granulator is set at 180-280°C.

[0024] Wood-plastic preparation: the weight fractions of the following components are respectively: 80 parts of fireproof and moisture-proof PVC composite stabilizer 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

[0026] Modified PVC composite stabilizer: Dry the PVC composite stabilizer and calcium chloride in an oven until the moisture content is below 0.1%. After the calcium chloride is ball-milled in a ball mill, pass through a 100-mesh sieve and separate the components into The following parts by weight are weighed: 60 parts of PVC composite stabilizer, 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 is set at 240° C., and the fireproof and moisture-proof PVC composite stabilizer alloy after kneading is crushed in the crusher.

[0027] Wood-plastic preparation: The weight fractions of the following components are respectively: 25 parts of fireproof and moisture-proof PVC composite stabilizer 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 granu...

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Abstract

The invention discloses a fire-proof and damp-proof PVC compound stabilizer wood-plastic composite and belongs to the technical field of wood-plastic materials. The fire-proof and damp-proof PVC compound stabilizer wood-plastic composite is prepared from, by weight, 25-50 parts of fire-proof and damp-proof PVC compound stabilizer, 5-80 parts of wood fiber, 1-8 parts of epoxidized soybean oil and 1-6 parts of pigment. The invention further discloses a preparation method of the fire-proof and damp-proof PVC compound stabilizer wood-plastic composite. According to the fire-proof and damp-proof PVC compound stabilizer wood-plastic composite, by adding the metal halide modified PVC composite stabilizer, the fire-proof and damp-proof temperature is decreased to 200 DEG C or below; meanwhile, PE and PP are added for improving the impact resistance of the PVC composite stabilizer, so that the wood-plastic composite product has high bending strength, bending elastic modulus and gap-free impact resistance strength and can partially replace structural materials. The preparation method of the fire-proof and damp-proof PVC compound stabilizer wood-plastic composite has good practicability, and can produce good economic benefits and social effects.

Description

technical field [0001] The invention belongs to the technical field of wood-plastic materials, and in particular relates to a fire-proof and moisture-proof PVC composite stabilizer 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 flexural strength and flexural elastic modulus of engineering plastic PVC composite stabilizers are much higher than general plastics, and have broad application prospects in wood-plastic products, but because the melting point of PVC composite stabilizers generally exceeds 220 ° C, and wood fibers except Contains high-temperature-re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L97/02C08L23/06C08L51/06C08L23/12C08K5/098C08K3/16C08K5/09
CPCC08L27/06C08L97/02C08L2201/02C08L2205/02C08L2205/025C08L2205/035C08L2205/16C08L23/06C08L51/06C08K5/098C08K3/16C08L23/12C08K5/09C08K2003/162
Inventor 许世华何军李靖马长城
Owner NANJING XUHUA SUNDI NEW BUILDING MATERIALS
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