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CN-121975229-A - High Jiang Zuran wood-plastic composite material and preparation method thereof

CN121975229ACN 121975229 ACN121975229 ACN 121975229ACN-121975229-A

Abstract

The invention relates to the technical field of wood-plastic composite materials, in particular to a high Jiang Zuran wood-plastic composite material and a preparation method thereof. The high-strength flame-retardant wood-plastic composite material comprises, by weight, 30-50 parts of wood fibers, 100 parts of a polymer matrix, 15-25 parts of ammonium polyphosphate modified basalt fibers, 5-8 parts of a compatilizer and 0.5-1.5 parts of a glidant. The preparation method comprises the following steps of S1, immersing basalt fibers in dilute acid for preactivation, washing to neutrality and drying to obtain activated basalt fibers, S2, immersing the activated basalt fibers in an alcohol solution of a coupling agent, filtering and drying to obtain surface modified basalt fibers, and S3, heating and blending the surface modified basalt fibers and ammonium polyphosphate, and cooling to obtain the basalt fiber. The high-strength flame-retardant wood-plastic composite material has high mechanical strength and good flame retardant property, and the adopted raw materials are green and nontoxic, and the preparation method is simple and low in manufacturing cost, and can be used as a novel environment-friendly furniture material.

Inventors

  • HE CHAOJIAN
  • FAN DONGMEI
  • WANG LILI

Assignees

  • 四川新简作智能家居有限责任公司

Dates

Publication Date
20260505
Application Date
20260211

Claims (10)

  1. 1. A high Jiang Zuran wood-plastic composite material is characterized in that the raw materials comprise wood fiber, a polymer matrix, ammonium polyphosphate modified basalt fiber, a compatilizer and a glidant.
  2. 2. The high-strength flame-retardant wood-plastic composite material of claim 1, wherein the compatilizer comprises maleic anhydride grafted polypropylene or maleic anhydride grafted polyethylene.
  3. 3. The high-strength flame-retardant wood-plastic composite material of claim 1, wherein the glidant comprises calcium stearate or zinc stearate.
  4. 4. The high-strength flame-retardant wood-plastic composite material of claim 1, wherein the wood fibers comprise dry powder of wood, bamboo, rice hulls or straw.
  5. 5. The high-strength flame-retardant wood-plastic composite material of claim 1, wherein the polymer matrix comprises polyethylene or polypropylene.
  6. 6. The high-strength flame-retardant wood-plastic composite material according to claim 1, wherein the raw materials comprise, by weight, 100 parts of the polymer matrix, 30-50 parts of the wood fibers, 15-25 parts of the ammonium polyphosphate modified basalt fibers, 5-8 parts of the compatilizer and 0.5-1.5 parts of the glidant.
  7. 7. The high-strength flame-retardant wood-plastic composite according to any one of claims 1 to 6, wherein the preparation method of the ammonium polyphosphate modified basalt fiber comprises the following steps: s1, immersing basalt fibers in dilute acid for preactivation, washing to neutrality, and drying to obtain activated basalt fibers; s2, adding the activated basalt fiber into an alcohol solution of a coupling agent for soaking, and then filtering and drying to obtain a surface modified basalt fiber; and S3, heating and blending the surface modified basalt fiber and ammonium polyphosphate, and cooling to obtain the ammonium polyphosphate modified basalt fiber.
  8. 8. The high-strength flame-retardant wood-plastic composite according to claim 7, wherein in the step S2, the coupling agent comprises KH-560 and KH-550.
  9. 9. The high-strength flame-retardant wood-plastic composite material according to claim 7, wherein in the step S3, the temperature of heating and blending is 90-110 ℃.
  10. 10. The method for preparing a high-strength flame-retardant wood-plastic composite material according to any one of claims 1 to 9, comprising the steps of: And mixing the wood fibers, the polymer matrix, the ammonium polyphosphate modified basalt fibers, the compatilizer and the glidant at a high speed according to the proportion, and then adopting a parallel double-screw extruder to perform melt blending and granulation to obtain the master batch of the high-strength flame-retardant wood-plastic composite material.

Description

High Jiang Zuran wood-plastic composite material and preparation method thereof Technical Field The invention relates to the technical field of wood-plastic composite materials, in particular to a high Jiang Zuran wood-plastic composite material and a preparation method thereof. Background The wood-plastic composite (WPC) is a composite material prepared by taking wood fiber materials and thermoplastic plastics as raw materials, can be manufactured by adopting waste wood and plastics, is an environment-friendly material which is concerned, has the advantages of wood and plastics, and has better surface hardness and wear resistance than the wood, high toughness and good plasticity, corrosion resistance, excellent waterproof performance and environment friendliness. But simultaneously, the wood-plastic composite material also inherits the problems of poor antibacterial property, inflammability, easy aging and the like, and severely restricts the application range of the wood-plastic composite material. In order to increase the flame retardant performance of the wood-plastic composite, a method of adding flame retardant functional fillers is generally adopted, however, the flame retardant functional fillers have common compatibility problems and also introduce the defects of the functional fillers. The conventional halogen-based flame retardant releases toxic gas when burned, so that the application range is limited, and the currently commonly used halogen-free flame retardant comprises a carbon-based flame retardant, a metal-based flame retardant, an ore functional mineral flame retardant, a phosphorus-based flame retardant and a boron-based flame retardant. The carbon-based flame retardant comprises expanded graphite, carbon black and graphene, has a fragile structure, poor binding force with nonpolar plastics and can cause the decrease of the impact toughness of WPC, the metal-based flame retardant comprises aluminum hydroxide, magnesium hydroxide and the like, the amount required to be added for the WPC to reach the basic flame retardant standard is extremely large, the mechanical property and the processing fluidity of materials can be seriously damaged, the mineral-functional flame retardant comprises diatomite, activated carbon and the like, the mineral-functional flame retardant is easy to agglomerate and has poor compatibility with a plastic matrix, the mechanical property can be reduced under the condition of high addition amount, the phosphorus-based flame retardant and the boron-based flame retardant have similar problems, and in general, the halogen-free flame retardant has poor general compatibility when being added as a filler of the WPC, and the addition amount is large and can cause the decrease of the mechanical property of composite materials. In view of the foregoing, there is a need for a wood-plastic composite material that is natural, environmentally friendly, low in cost, good in flame retardant properties, and high in strength. Disclosure of Invention The invention aims to overcome the defects of the prior art and provide a high Jiang Zuran wood-plastic composite material and a preparation method thereof, so as to at least achieve the effects of high mechanical strength and good flame retardant property. The invention aims at realizing the following technical scheme: a high Jiang Zuran wood-plastic composite material is prepared from wood fibre, polymer matrix, modified basalt fibre of ammonium polyphosphate, compatibilizer and glidant. In some embodiments, the compatibilizing agent comprises maleic anhydride grafted polypropylene or maleic anhydride grafted polyethylene. In some embodiments, the glidant comprises calcium stearate or zinc stearate. In some embodiments, the wood fibers comprise a dry powder of wood, bamboo, rice hulls, or straw, preferably, the wood fibers are sieved through a 80-120 mesh sieve with a moisture content of <3%. In some embodiments, the polymer matrix comprises polyethylene or polypropylene. In some embodiments, the raw materials include, by weight, 100 parts of the polymer matrix, 30-50 parts of the wood fibers, 15-25 parts of the ammonium polyphosphate modified basalt fibers, 5-8 parts of the compatilizer, and 0.5-1.5 parts of the glidant. In some embodiments, the method for preparing the ammonium polyphosphate modified basalt fiber comprises the following steps: s1, immersing basalt fibers in dilute acid for preactivation, washing to neutrality, and drying to obtain activated basalt fibers; s2, adding the activated basalt fiber into an alcohol solution of a coupling agent for soaking, and then filtering and drying to obtain a surface modified basalt fiber; and S3, heating and blending the surface modified basalt fiber and ammonium polyphosphate, and cooling to obtain the ammonium polyphosphate modified basalt fiber. In some examples, in step S1, the dilute acid is 2-5 wt% dilute hydrochloric acid or dilute sulfuric acid. In some examples, in step S2, th