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High-performance halogen-free flame-retardant long fiber reinforced polylactic acid composite material and preparation method thereof

A composite material, polylactic acid technology, applied in the field of high-performance halogen-free flame-retardant long-fiber-reinforced polylactic acid composite materials and its preparation, can solve the problems of poor thermal stability and easy combustion of polylactic acid, and achieve good flame-retardant effect and low cost The effect of low cost and wide source of materials

Active Publication Date: 2015-02-25
贵州凯科特材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-performance halogen-free flame-retardant long-fiber reinforced polylactic acid composite material and its preparation method, which solves the problems of poor thermal stability and easy combustion of polylactic acid, and improves the mechanical properties of the product and is environmentally friendly. Good shape and simple process to overcome the deficiencies of the existing technology

Method used

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  • High-performance halogen-free flame-retardant long fiber reinforced polylactic acid composite material and preparation method thereof
  • High-performance halogen-free flame-retardant long fiber reinforced polylactic acid composite material and preparation method thereof

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Embodiment 1

[0015] Example 1 of the present invention: high-performance halogen-free flame-retardant long-fiber reinforced polylactic acid composite material, calculated in parts by mass, including 86 parts of polylactic acid, 20 parts of toughening agent, 45 parts of fiber, 8 parts of compatibilizer, 1 part of chain extender, 1 part of antioxidant, 20 parts of halogen-free flame retardant, 4 parts of synergist, 15 parts of char-forming agent and 2 parts of dispersant; the toughening agent is TPU; the fiber is Glass fiber; described compatibilizer is the ternary random copolymer of styrene-acrylonitrile-glycidyl methacrylate; described halogen-free flame retardant is melamine polyphosphate; described synergist It is quaternary phosphate intercalated montmorillonite; the char-forming agent is pentaerythritol; the dispersant is pentaerythritol stearate;

[0016] The preparation method of high-performance halogen-free flame-retardant long-fiber reinforced polylactic acid composite material i...

Embodiment 2

[0018] Example 2 of the present invention: high-performance halogen-free flame-retardant long fiber reinforced polylactic acid composite material, calculated in parts by mass, including 75 parts of polylactic acid, 25 parts of toughening agent, 50 parts of fiber, 10 parts of compatibilizer, 1.2 Parts of chain extender, 1.2 parts of antioxidant, 15 parts of halogen-free flame retardant, 5 parts of synergist, 12 parts of char-forming agent and 1 part of dispersant; described toughening agent is TPU; described fiber is Glass fiber; described compatibilizer is the ternary random copolymer of styrene-acrylonitrile-glycidyl methacrylate; described halogen-free flame retardant is melamine polyphosphate; described synergist It is quaternary phosphate intercalated montmorillonite; the char-forming agent is pentaerythritol; the dispersant is pentaerythritol stearate;

[0019] The preparation method of high-performance halogen-free flame-retardant long-fiber reinforced polylactic acid co...

Embodiment 3

[0021] Example 3 of the present invention: high-performance halogen-free flame-retardant long-fiber reinforced polylactic acid composite material, calculated in parts by mass, including 95 parts of polylactic acid, 15 parts of toughening agent, 40 parts of fiber, 6 parts of compatibilizer, 0.8 part of chain extender, 0.8 part of antioxidant, 25 parts of halogen-free flame retardant, 3 parts of synergist, 17 parts of char-forming agent and 3 parts of dispersant; described toughening agent is PBS; described fiber is Kenaf fiber; described compatibilizer is the ternary random copolymer of styrene-acrylonitrile-glycidyl methacrylate; described halogen-free flame retardant is melamine polyphosphate; described synergistic The agent is quaternary phosphate intercalated montmorillonite; the char-forming agent is pentaerythritol; the dispersant is pentaerythritol stearate;

[0022] The preparation method of high-performance halogen-free flame-retardant long-fiber reinforced polylactic ...

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Abstract

The invention discloses a high-performance halogen-free flame-retardant long fiber reinforced polylactic acid composite material and a preparation method thereof. The preparation method includes that polylactic acid is adopted as matrix resin, processing temperature of the polylactic acid is increased by adding chain extender, a ternary random copolymer of styrene-acrylonitrile-glycidyl methacrylate is taken as a compatilizer, the compatilizer can improve bonding force between the matrix resin and fibers, and compatibility between the matrix resin and flexibilizer is improved; a one-step method is adopted to prepare the high-performance halogen-free flame-retardant long fiber reinforced (PLC) polylactic acid composite material, in other words, soaking of continuous fibers by the matrix resin is completed through a soaking die, coating of matrix fused mass with halogen-containing flame retardant on a soaking material strip is completed in a coating die, cooling and traction are performed, and the soaking material strip is cut into needed length through a granulator. Compared with an existing two-step method, the preparation method is simple in process, and the high-performance halogen-free flame-retardant long fiber reinforced polylactic acid composite material is excellent in mechanical performance and good in flame retardant effect.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-performance halogen-free flame-retardant long-fiber reinforced polylactic acid composite material and a preparation method thereof. Background technique [0002] Polylactic acid (PLA) is a biodegradable polymer. Due to its abundant sources, low price, and good mechanical properties, more and more experts and scholars are very interested in the research and application of PLA. However, the thermal stability of polylactic acid material is poor, it is easy to burn, and the melting drop phenomenon is serious when burning, which limits the application of polylactic acid in electronic products, automotive interior parts, electronic power equipment, transportation and other fields with flame retardant requirements, so it needs to be tested Flame retardant modification: In today's society, people's safety awareness is improving, and the country's environmental protection...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L97/02C08L75/04C08L67/02C08L25/12C08K13/04C08K7/14C08K13/02C08K5/3492C08K3/34C08K5/053
Inventor 张道海何敏于杰秦舒浩郭建兵瞿进张翔
Owner 贵州凯科特材料有限公司
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