Fire-retardant polyolefin based wood plastic composite material and preparation method thereof
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A wood-plastic composite material and polyolefin-based technology, applied in the field of wood-plastic composite material and its preparation, can solve the problems of large smoke production and high heat release rate, and achieve strong wood feeling, wide application range and good flame retardancy. and mechanical properties
Active Publication Date: 2012-01-18
NORTHEAST FORESTRY UNIVERSITY
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Problems solved by technology
[0004] The present invention aims to solve the problems of high heat release rate, large smoke production, and easy generation of CO harmful gas when the existing
Method used
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specific Embodiment approach 1
[0013] Specific Embodiment 1: In this embodiment, the flame-retardant polyolefin-based wood-plastic composite material consists of 30-70 parts by weight of wood fiber material, 2-8 parts of coupling agent, 0.5-4 parts of lubricant, 20-50 parts of plastic, 0.01-1 part of antioxidant, 8-30 parts of nano-inorganic flame retardant and 0-5 parts of mineral filler; the lignocellulosic materials are wood powder, rice husk powder, One or a mixture of bamboo chips, straw powder, fruit shell powder, bagasse; the coupling agent is a silane coupling agent, an aluminate coupling agent, a titanate coupling agent, polymethylene Polyphenylisocyanate, maleic anhydride, maleic anhydride graft-modified polyethylene, maleic anhydride graft-modified polypropylene, or a mixture of isocyanates; the lubricant is polyethylene wax, polypropylene Wax, paraffin, stearic acid, zinc stearate, calcium stearate or a mixture of several; plastics are one or more of polyethylene, polypropylene, recycled polyeth...
specific Embodiment approach 2
[0015] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the flame-retardant polyolefin-based wood-plastic composite material consists of 30 parts by weight of wood fiber material, 2 parts of coupling agent, and 0.5 parts of lubricant, 20 parts of plastic, 0.01 part of antioxidant and 8 parts of nano inorganic flame retardant. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0016] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the flame-retardant polyolefin-based wood-plastic composite material consists of 70 parts by weight of wood fiber material, 8 parts of coupling agent, and 4 parts of lubricant, 50 parts of plastic, 1 part of antioxidant, 30 parts of nano inorganic flame retardant and 5 parts of mineral filler. Others are the same as in the first embodiment.
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Abstract
The invention discloses a fire-retardant polyolefin based wood plastic composite material and a preparation method thereof, and relates to a wood plastic composite material and a preparation method thereof, and the composite material and method provided by the invention can be used for solving problems that the existing fire-retardant wood plastic composite material has high heat release efficiency in burning and high smoke production, and can generate CO harmful gas easily. The flame-retardant polyolefin based wood plastic composite material is prepared from wood fiber materials, plastics, acoupling agent, a lubricant, an antioxidant, a nano inorganic fire retardant and a mineral filler. The method comprises the following steps: putting the wood fiber materials, the coupling agent and the lubricant into a high-speed mixing machine for hot mixing; then putting into a cold mixing machine for cold mixing, sending the plastics, the antioxidant, the nano inorganic fire retardant and the mineral filler into the cold mixing machine and then mixing; and then carrying out fusing and extruding for granulation by adopting extruding, injection, hot compressing or mold compression for molding, thus the fire-retardant polyolefin based wood plastic composite material is obtained. The wood plastic composite material provided by the invention has low heat release rate in burning and less smoke production, and is healthy and environmentally-friendly, and can be widely applied to the fields of indoor construction, decoration and furnishing materials and the like.
Description
technical field [0001] The invention relates to a wood-plastic composite material and a preparation method thereof. Background technique [0002] Wood-plastic composite materials are made by adding lignocellulosic materials such as wood, rice husk, bamboo chips, hemp, straw, nut shells, etc. in the form of powder, fiber, or shavings as reinforcements or fillers to thermoplastics through melting and compounding. A new class of composite materials obtained. Compared with traditional wooden materials, it has the advantages of not being afraid of insects, water resistance, corrosion resistance, not easy to crack and not easy to absorb moisture and deform, etc. It can be widely used in doors, windows, floors, ceilings and various construction and decoration fields. and automotive lining materials. In addition, polyolefin-based wood-plastic composite materials can be reused and recycled, which is environmentally friendly and has low maintenance costs. [0003] However, as a woo...
Claims
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Application Information
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