Halogen-free flame-retardant type injection molding-class polyolefin wood plastic composite material and preparation method thereof

A wood-plastic composite material, injection molding-grade technology, applied in the field of wood-plastic composite materials, can solve the problems of increasing the practicability of processing fibers, easy decomposition of ammonium polyphosphate, large amount of flame retardants, etc., to achieve a wide range of molding methods, no The effect of halogen flame retardant is good, and the amount of flame retardant is less

Active Publication Date: 2010-09-15
GUANGDONG KINGFA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is an inevitable trend to research and develop halogen-free flame-retardant wood-plastic composite materials. Chinese patent application 200610039985.4 discloses a flame-retardant wood-plastic composite material and its preparation method, using intumescent flame retardant ammonium polyphosphate and carbon forming agent Flame-retardant modification of polypropylene or polyethylene-based wood-plastic composite materials with foaming agent, etc., but there are disadvantages such as large amount of flame retardant added, ammonium polyphosphate is easy to decompose at processing temperature, and the product is easy to absorb moisture; Chinese patent application 200710072794.2 discloses a flame-retardant and smoke-suppressing wood-plastic composite material, which also uses intumescent flame retardant ammonium polyphosphate, starch, etc. to modify polystyrene or polyvinyl chloride, and still exists as an intumescent flame retardant The above shortcomings; in addition, Chinese patent application 200710173607.X discloses a halogen-free flame-retardant wood-plastic composite material and its prepara

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Raw material components are calculated by mass percentage as:

[0031] Copolymerized PP: 36.9%

[0032] 100 mesh wood flour: 35%

[0033] PP-g-MAH: 5%

[0034] EPM: 5%

[0035] Liquid paraffin: 0.5%

[0036] Dibutyl phthalate: 0.5%

[0037] N,N'-bisethylene stearamide: 1%

[0038]Thermosetting resin coated red phosphorus: 6%

[0039] 3000 mesh superfine magnesium hydroxide: 10%

[0040] Antioxidant 1010: 0.1%

[0041] First dry the wood powder at 150°C for 4 hours, then mix it evenly in a high-mixer, then add it to the extruder to extrude and pelletize, and the processing temperature is controlled at 165°C to obtain a halogen-free flame-retardant injection molding grade PP Wood-plastic composites.

[0042] The tested properties of the above-mentioned wood-plastic composite materials are as follows:

[0043] Specific gravity 1.15g / cm 3

[0044] Tensile strength 27.3Mpa

[0045] Elongation 12.8%

[0046] Izod beam unnotched impact strength 289J / m

[0047] B...

Embodiment 2

[0052] Raw material components are calculated by mass percentage as:

[0053] Homopolymer PP: 37.9%

[0054] 100 mesh bamboo powder: 30%

[0055] EPDM-g-MAH: 5%

[0056] EPDM: 5%

[0057] Liquid paraffin: 0.5%

[0058] Silane coupling agent: 0.5%

[0059] N,N'-bisethylene stearamide: 1%

[0060] Red phosphorus masterbatch (red phosphorus mass content 70%): 10%

[0061] 3000 mesh superfine magnesium hydroxide: 10%

[0062] Antioxidant 1010: 0.1%

[0063] First dry the wood powder at 150°C for 4 hours, then mix it evenly in a high-mixer, then add it to the extruder to extrude and pelletize, and the processing temperature is controlled at 165°C to obtain a halogen-free flame-retardant injection molding grade PP Wood-plastic composites.

[0064] The tested properties of the above-mentioned wood-plastic composite materials are as follows:

[0065] Specific gravity 1.12g / cm 3

[0066] Tensile strength 28.5Mpa

[0067] Elongation 14.2%

[0068] Izod beam unnotched impac...

Embodiment 3

[0074] Raw material components are calculated by mass percentage as:

[0075] HDPE: 37.9%

[0076] 100 mesh bamboo powder: 30%

[0077] POE-g-MAH: 5%

[0078] POE: 5%

[0079] Silicone oil: 0.5%

[0080] Titanate coupling agent: 0.5%

[0081] N,N'-bisethylene stearamide: 1%

[0082] Red phosphorus masterbatch (red phosphorus mass content 70%): 10%

[0083] 3000 mesh aluminum hydroxide: 10%

[0084] Antioxidant 1010: 0.1%

[0085] First dry the wood powder at 150°C for 4 hours, then mix it evenly in a high-mixer, then add it to the extruder to extrude and pelletize, and the processing temperature is controlled at 160°C to obtain a halogen-free flame-retardant injection molding grade PE Wood-plastic composites.

[0086] The tested properties of the above-mentioned wood-plastic composite materials are as follows:

[0087] Specific gravity 1.08g / cm 3

[0088] Tensile strength 21.6Mpa

[0089] Elongation 20.4%

[0090] Izod beam unnotched impact strength 366J / m

[00...

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Abstract

The invention discloses a halogen-free flame-retardant type injection molding-class polyolefin wood plastic composite material and a preparation method thereof. The composite material consists of the following components in percentage by mass: 25 to 80 percent of polyolefin resin, 5 to 60 percent of plant fiber, 0.5 to 20 percent of compatilizer, 0 to 30 percent of flexibilizer, 0.5 to 8 percent of dispersant, 5 to 40 percent of flame retardant and flame retardance synergist and 0 to 1 percent of antioxidant. Compared with the conventional wood plastic composite material, the halogen-free flame-retardant type injection molding-class polyolefin wood plastic composite material has the characteristics of simple production flow, little using amount of the flame retardant, good halogen-free flame retardant effect, wide range of molding modes and the like and is applicable to various injection molding products, such as electric appliance shells, automobile parts, furniture, buildings and other parts.

Description

technical field [0001] The invention relates to the field of wood-plastic composite materials, in particular to a halogen-free flame-retardant injection-grade polyolefin wood-plastic composite material. Background technique [0002] Wood-plastic composite material is a new type of environmentally friendly material prepared by using plant fiber and thermoplastic resin as the main raw materials and adding certain processing aids. This material can alleviate the consumption of petroleum, and at the same time, a large amount of waste plant fibers and recycled plastics are used, which can not only alleviate the consumption of petroleum resources in modern society, but also reduce the consumption of wood resources. It is an effective means to protect the environment and reduce energy consumption. [0003] In view of the many advantages of wood-plastic composite materials, its market has grown rapidly in recent years, especially in interior products, construction and automotive sup...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L23/06C08L23/08C08L97/02C08K13/06C08K9/10C08K3/02C08K3/22B29B9/06
Inventor 刘建中付锦锋胡志华王林郭少华黄恒梅郭建明
Owner GUANGDONG KINGFA TECH CO LTD
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