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Flame-retardant wood-plastic composite and preparation method thereof

A wood-plastic composite material and flame retardant technology, which is applied in the field of wood-plastic composite materials, can solve the problems of complex preparation method, long time consumption, low mechanical strength and bending strength of wood-plastic composite materials, etc. Production cost, effect of good flame retardant effect

Inactive Publication Date: 2018-10-12
湖南格林美资源利用有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The waste ceramic powder in this invention usually needs to be surface modified first to eliminate or reduce the number of silanol groups on the surface, so that it can be evenly mixed with plant fibers, plastics and other raw materials. This preparation method is complicated and time-consuming. The resulting wood-plastic Composite materials have low mechanical strength and flexural strength

Method used

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  • Flame-retardant wood-plastic composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Weigh 15% of waste PE flakes, 16% of waste ceramic powder, STR-5301% of lubricant, 0.5% of tert-butyldiphenylchlorosilane, 10100.5% of antioxidant, and G-5060.3 of fungicide according to weight percentage %, halogen-free flame retardant 1%, ferrous ammonium sulfate 1%, polyhexamethylene biguanide 0.7%, wood fiber 64%, add to the mixer and stir evenly, the mixing temperature is 125°C, and the stirring speed is 180r / min , mixed and cooled to below 60°C to obtain a mixture;

[0034]2) Put the mixture in a twin-screw granulator for granulation to obtain wood-plastic granules. The screw speed is 250r / min, and the feeding speed is 300r / min. The temperature of each zone is controlled as follows: 150°C for zone 1, 175°C for zone 2, 180°C for zone 3, 280°C for zone 4, 280°C for zone 5, 280°C for zone 6, 280°C for zone 7, 280°C for zone 8, and 280°C for zone 9. Zone 160°C, Ten Zone 160°C;

[0035] 3) Add wood-plastic particles into a twin-screw extruder for extrusion molding...

Embodiment 2

[0037] 1) Weigh 18% of waste PE flakes, 14% of waste ceramic powder, 3% of paraffin wax, 1% of tert-butyldiphenylchlorosilane, 1680.05% of antioxidant, 0.05% of antifungal agent G-5060.05%, no Add 2% halogenated flame retardant, 1.4% ferrous ammonium sulfate, 0.5% polyhexamethylene biguanide, and 60% wood fiber into a mixer and stir evenly. The mixing temperature is 130°C and the stirring speed is 200r / min. After cooling to below 60°C to obtain the mixture;

[0038] 2) Put the mixture in a twin-screw extruder for granulation to obtain wood-plastic granules. The screw speed is 260r / min, and the feeding speed is 330r / min. The temperature of each zone is controlled as follows: Zone 1 190°C, Zone 2 195°C, Zone 3 200°C, Zone 4 260°C, Zone 5 260°C, Zone 6 260°C, Zone 7 260°C, Zone 8 260°C, Zone 9 Zone 180°C, Ten Zone 180°C;

[0039] 3) Add wood-plastic particles into a twin-screw extruder for extrusion molding to obtain a flame-retardant wood-plastic composite material. In the twi...

Embodiment 3

[0041] 1) Weigh 15% of waste PE flakes, 14.7% of waste ceramic powder, 0.5% of lubricant STR-53, 3% of tert-butyldiphenylchlorosilane, 10100.3% of antioxidant, and 0.5% of fungicide G-5060.5 according to weight percentage %, 3% halogen-free flame retardant, 2% ferrous ammonium sulfate, 1% polyhexamethylene biguanide, 60% wood fiber, add to the mixer and stir evenly, the mixing temperature is 140°C, and the stirring speed is 220r / min , mixed and cooled to below 60°C to obtain a mixture;

[0042] 2) Put the mixture in a twin-screw extruder for granulation to obtain wood-plastic granules. The screw speed is 300r / min, and the feeding speed is 400r / min. Zone, the temperature of each zone is controlled as follows: Zone 1 170°C, Zone 2 180°C, Zone 3 190°C, Zone 4 240°C, Zone 5 240°C, Zone 6 240°C, Zone 7 240°C, Zone 8 240°C, Zone 9 Zone 170°C, Ten Zone 170°C;

[0043] 3) Add wood-plastic particles into a twin-screw extruder for extrusion molding to obtain a flame-retardant wood-pla...

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Abstract

The invention discloses a flame-retardant wood-plastic composite and a preparation method thereof. The flame-retardant wood-plastic composite comprises the following components in percentage by mass:15-18% of waste PE sheets, 14-16% of waste ceramic powder, 60-64% of wood fibers, 1-3% of flame retardant, 0.5-3% of lubricant, 0.05-0.5% of antioxidant, 0.05-0.5% of mildewcide, 0.5-3% of tert-butyldiphenylchlorosilane, 1-2% of ammonium iron sulfate, 0.5-1% of polyhexamethylene biguanidine. Tert-butyldiphenylchlorosilane, ammonium iron sulfate, polyhexamethylene biguanidine and other raw materials are mixed, and a compatilizer is not added, so that the problem of material performance lowering caused by side reactions in a mixing process of the raw materials can be effectively solved, the waste ceramic powder can be uniformly mixed with other raw materials without surface treatment, the preparation method is simple, and the prepared flame-retardant wood-plastic composite has relatively high bending strength and also has good flame retardance and water resistance.

Description

technical field [0001] The invention belongs to the technical field of wood-plastic composite materials, and in particular relates to a flame-retardant wood-plastic composite material and a preparation method thereof. Background technique [0002] The basis of WPC is high-density polyethylene and wood fiber, which determines that it has some characteristics of plastic and wood. Such as good processing performance and strength performance, water resistance, corrosion resistance, long service life, excellent adjustable performance, the biggest advantage is that it can be 100% recycled and reproduced, can be decomposed, and will not cause "white pollution". Green environmental protection products. With the development of urbanization and industrialization, human forest resources are becoming less and less, and wood resources are becoming more and more precious. In order to meet the requirements of environmental protection, traditional pure wood is gradually being replaced in r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L23/06C08L79/00C08L91/06C08K13/02C08K3/016C08K3/30C08K5/134C08K5/54C08K5/526
CPCC08K2003/3045C08L97/02C08L2201/02C08L2205/03C08L2205/035C08L2205/16C08L23/06C08L79/00C08K13/02C08K3/016C08K3/30C08K5/1345C08K5/5406C08L91/06C08K5/526
Inventor 游和求方映杰游一兰
Owner 湖南格林美资源利用有限公司
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