Wood-plastic composite with flame-retardation effect and preparation method

A technology of wood-plastic materials and functions, which is applied in the field of wood-plastic materials and its preparation, can solve the problem of low flame retardancy of flame retardants, and achieve the effects of reduced resin consumption, excellent flame retardancy, good mechanical properties and easy processing properties

Inactive Publication Date: 2015-01-28
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, halides have the best flame retardant effect, but halides will release toxic substances when they are flame retardant, such as dibenzodioxin and diphenylfuran, so pure halide flame retardants are less and less flame retardant

Method used

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  • Wood-plastic composite with flame-retardation effect and preparation method
  • Wood-plastic composite with flame-retardation effect and preparation method
  • Wood-plastic composite with flame-retardation effect and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Accurately weigh 3 parts of S15 hollow glass microspheres, 45 parts of S-1000 polyvinyl chloride, 40 parts of wood powder, 5 parts of HD A9 expandable graphite, 5 parts of No. 70 chlorinated paraffin, 2 parts of PPH-T03 maleic anhydride stick polypropylene. Dilute the silane coupling agent KH-560 with absolute ethanol to a 5% solution, add S15 hollow glass microspheres to the coupling agent solution for surface modification, stir for 30-60 minutes to form a viscous Dried to powder. Stir the flame retardant and lignocellulose in a high-speed kneader with a heating jacket at 100-120°C for 5-10 minutes, cool to 60°C, add inorganic fillers, additives, and polymers treated with coupling agents, and Mix in a high-speed mixer for 2-5 minutes. The obtained homogeneous material is fed into an extruder for extrusion and granulation. The temperature of each temperature zone of the extruder is 180-200, 190-210, 200-220, 200-220, 200-220, 180-190°C. The obtained polymer was drie...

Embodiment 2

[0035] Accurately weigh 3 parts of S15 hollow glass microspheres, 45 parts of S-1000 polyvinyl chloride, 40 parts of wood flour, 0.5 parts of straw ash, 4.5 parts of HD A9 expandable graphite, 5 parts of No. 70 chlorinated paraffin, 2 parts of PPH- T03 maleic anhydride grafted polypropylene. Dilute the silane coupling agent KH-560 with absolute ethanol to a 5% solution, add S15 hollow glass microspheres to the coupling agent solution for surface modification, stir for 30-60 minutes to form a viscous Dried to powder. Stir the flame retardant and lignocellulose in a high-speed kneader with a heating jacket at 100-120°C for 5-10 minutes, cool to 60°C, add inorganic fillers, additives, and polymers treated with coupling agents, and Mix in a high-speed mixer for 2-5 minutes. The obtained homogeneous material is fed into an extruder for extrusion and granulation. The temperature of each temperature zone of the extruder is 180-200, 190-210, 200-220, 200-220, 200-220, 180-190°C. T...

Embodiment 3

[0037] Accurately weigh 3 parts of S15 hollow glass microspheres, 45 parts of S-1000 polyvinyl chloride, 40 parts of wood flour, 5 parts of straw ash, 5 parts of HA-1509 guanidine sulfamate, 1.7 parts of 135C isocyanate, and 0.3 parts of DCP peroxidation dicumyl. Dilute the silane coupling agent KH-560 with absolute ethanol to a 5% solution, add S15 hollow glass microspheres to the coupling agent solution for surface modification, stir for 30-60 minutes to form a viscous Dried to powder. Stir the flame retardant and lignocellulose in a high-speed kneader with a heating jacket at 100-120°C for 5-10 minutes, cool to 60°C, add inorganic fillers, additives, and polymers treated with coupling agents, and Mix in a high-speed mixer for 2-5 minutes. The obtained homogeneous material is fed into an extruder for extrusion and granulation. The temperature of each temperature zone of the extruder is 180-200, 190-210, 200-220, 200-220, 200-220, 180-190°C. The obtained polymer was dried...

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Abstract

The invention relates to a wood-plastic composite with a flame-retardation effect and a preparation method. The wood-plastic composite is prepared from the following components in percent by weight: 40 to 50 percent of polymer, 3 to 10 percent of inorganic packing, 3 to 15 percent of a fire retardant, 40 to 50 percent of lignocellulose and 1 to 5 percent of other assistants. The inorganic packing is subjected to extraction and filtration after being processed by a silane coupling agent; in a drying oven, the temperature of 80 DEG C is kept and the constant temperature is kept for 2 to 5 hours; the fire retardant and the lignocellulose are stirred for 5 to 10min at a temperature of 100 to 120 DEG C in a high-speed kneading machine with a heating jacket; after the obtained product is cooled to the temperature of 60 DEG C, the inorganic packing, the assistants and the polymer which are processed by the coupling agent are added; the raw materials are mixed for 2 to 10min in a high-speed mixer; the obtained uniform materials are added into a double-screw extruder to carry out extrusion and pelletizing. The wood-plastic composite with the flame-retardation effect, which is prepared by the preparation method disclosed by the invention, has good flame retardation and adopts a simple process.

Description

technical field [0001] The invention relates to a wood-plastic material with flame-retardant effect and a preparation method, belonging to the technical field of polymer materials Background technique [0002] Wood-plastic composite materials are a class of materials that cover a wide range of products and have a variety of shapes and structures. It has the advantages of excellent water resistance, corrosion resistance and recyclability. However, since wood fibers and polymers are both flammable substances, composite materials are very easy to burn and are difficult to extinguish. They are flammable substances, which greatly restricts the use and promotion of wood-plastic materials. With the development of technology, flame-retardant wood-plastic composite materials have become the focus of research. [0003] To improve the flame retardant performance of wood-plastic can generally be added by adding flame retardant additives such as halides, inorganic flame retardants, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L27/06C08L97/02C08L91/06C08K9/06C08K7/28B29C47/92B29C48/92
CPCB29C48/92C08L23/12C08L27/06C08L2201/02C08L2205/035C08L97/02C08L91/06C08L51/06C08K13/06C08K9/06C08K7/28C08K3/04C08K2003/262C08K5/14C08K5/435C08K5/29C08L91/02
Inventor 汪济奎王文琪杨昆赵聪司鹏翔郭卫红
Owner EAST CHINA UNIV OF SCI & TECH
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