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CN-121975198-A - Bio-based composite material, preparation method and application

CN121975198ACN 121975198 ACN121975198 ACN 121975198ACN-121975198-A

Abstract

The invention discloses a bio-based composite material, a preparation method and application thereof, which belong to the field of composite material preparation, and the bio-based composite material comprises, by mass, 35-55 parts of petroleum-based polymer base materials, 5.25-16.5 parts of petroleum-based polymer leftover materials, 1.75-16.5 parts of biomass fibers and 30-45 parts of auxiliary materials. The bio-based composite material, the preparation method and the application break through a single waste recycling or biomass adding mode, innovatively compound leftover materials with a biomass fiber system, construct a composite material system of waste recycling and biomass compounding, integrate a recycling economy and a bio-based substitution concept at a material design source, provide a brand new design thought for developing green products, and promote the green growth of industries.

Inventors

  • WU TIANCI
  • LIU JIA
  • LU CANZHONG
  • XIE YIMING

Assignees

  • 泉州鑫泰鞋材有限公司
  • 厦门稀土材料研究所
  • 华侨大学

Dates

Publication Date
20260505
Application Date
20260316

Claims (10)

  1. 1. The bio-based composite material is characterized by comprising the following components in parts by mass: 35-55 parts of petroleum-based polymer base material; 5.25-16.5 parts of petroleum-based macromolecule leftover materials; 1.75-16.5 parts of biomass fiber; 30-45 parts of auxiliary materials.
  2. 2. The biobased composite of claim 1, wherein: The biomass fiber is bamboo powder, tea stalk or hemp rope which is treated by chemical solution and surfactant; the petroleum-based polymer is one or more of butadiene rubber, styrene-butadiene rubber and isoprene rubber.
  3. 3. The bio-based composite according to claim 1, wherein the petroleum-based polymer base material comprises the following components in parts by mass: 25 parts of butadiene rubber; 8 parts of styrene-butadiene rubber; 5 parts of isoprene rubber.
  4. 4. The bio-based composite material according to claim 1, wherein the auxiliary materials comprise the following components in parts by mass: 0.0032 parts of transparent zinc carbonate; 0.3 parts of stearic acid; 0.3 parts of protective agent; 0.0012 parts of an anti-aging agent; 0.8017 parts of active agent; 0.65 part of accelerator; 0.25 parts of a yellowing-resistant agent; 22 parts of silicon dioxide; 8 parts of plasticizer; 5 parts of sulfur-containing silane coupling agent.
  5. 5. A method for preparing a biobased composite material according to any one of claims 1-4, comprising the steps of: s1, preheating processing equipment to 60-80 ℃, adding petroleum-based polymer base materials and pretreated petroleum-based polymer leftover materials, and plasticating for 0.8-1.5 min; S2, adding auxiliary materials into the processing system in the step S1, and mixing at 60-80 ℃ to obtain a mixed sizing material; S3, immediately discharging the mixed sizing material obtained in the step S2 when the mixed sizing material reaches 100-120 ℃ to obtain banburying sizing material; s4, carrying out thin-pass treatment on the rubber compound obtained in the step S3 to ensure that the rubber compound has uniform temperature and forms roller coating; s5, adding the pretreated biomass fibers into the roller coating glue obtained in the step S4; s6, fully homogenizing the roller-wrapping glue after the biomass fibers are added in the step S5 by 1.5-2.5 min, adjusting the roller spacing, discharging the film, and cooling to obtain a film; S7, cutting the film, then vulcanizing, and vulcanizing 2-4 min at 160-180 ℃ and 130-170 MPa to obtain the bio-based composite material.
  6. 6. The method for preparing a bio-based composite according to claim 5, wherein the step S2 specifically comprises the steps of: s21, adding transparent zinc carbonate, stearic acid, a protective agent, an anti-aging agent, an active agent, an accelerator and a yellowing resistant agent into the processing system in the step S1, and mixing at 60-80 ℃ for 0.8-1.5 min to ensure uniform dispersion; And S22, adding silicon dioxide, a plasticizer and a sulfur-containing silane coupling agent, and continuously mixing.
  7. 7. The method of preparing a bio-based composite according to claim 5, wherein the pretreatment of the petroleum-based polymer scrap in step S1 comprises the steps of: s11, collecting petroleum-based macromolecule leftover materials and sorting; S12, mechanically cleaning the petroleum-based macromolecule leftover materials after sorting in the step S11 to remove surface impurities, and then carrying out hot air drying treatment; And S13, crushing the petroleum-based polymer leftover materials after the drying treatment in the step S12, and grinding the crushed petroleum-based polymer leftover materials until the rubber powder with the mesh number of 40-200 meshes is formed.
  8. 8. The method of preparing a bio-based composite according to claim 5, wherein the pretreatment of the biomass fiber in step S5 comprises the steps of: s51, carrying out chemical solution treatment on biomass fiber powder with 40-200 meshes; S52, adding the biomass fiber powder treated by the chemical solution in the step S51 and a surfactant into deionized water, and stirring and reacting at 70-90 ℃ and 600-700 rpm ℃ for 3-5 h, wherein the addition amount of the surfactant is 1-2% of the mass of the biomass fiber powder treated by the chemical solution; S53, after the reaction is finished, suction filtration is carried out, and solids are collected; s54, drying the solid collected in the step S53 at the temperature of 100-110 ℃ for 5-7 h to obtain the surface modified biomass fiber powder.
  9. 9. The method of preparing a bio-based composite according to claim 8, wherein the chemical solution treatment in step S51 comprises the steps of: Dispersing 40-200 mesh biomass fiber powder in a chemical solution, wherein the chemical solution is 8-12wt% NaOH solution or H 2 O 2 solution, the mass ratio of the biomass fiber powder to the chemical solution is 1:4-6, stirring the solution at the temperature of room temperature-80 ℃ for 4-24H at the rotating speed of 600-700 rpm, carrying out suction filtration treatment on the solution, separating solid biomass fiber powder, repeatedly washing the solid biomass fiber powder with deionized water until the pH value of the filtrate is=7, and then carrying out drying treatment on the solid biomass fiber powder for 5-7H, wherein the drying temperature is 100-110 ℃.
  10. 10. Use of a biobased composite material according to any one of claims 1-4 or a biobased composite material produced by a method of producing a biobased composite material according to any one of claims 5-9 for producing a shoe material.

Description

Bio-based composite material, preparation method and application Technical Field The invention belongs to the field of composite material preparation, and particularly relates to a bio-based composite material, a preparation method and application. Background The shoe industry is an important support in the world light industry and consumer product manufacturing fields, and the annual output of the shoe industry exceeds 200 hundred million pairs, which profoundly influences the global supply chain, the consumer market and the employment pattern. China is used as a world shoe industry manufacturing center and occupies more than 60% of the global total yield throughout the year, and the unrivaled industrial scale and manufacturing capacity of the China are revealed. However, following the deluxe industry achievements, the long-followed "resource-product-waste" linear development model of the traditional shoe industry is facing increasingly severe resource constraints and environmental challenges. Modern footwear products, in particular sport shoes and leisure shoes, have high structural and functional dependence on petroleum-based synthetic polymer materials with excellent performance, such as ethylene-vinyl acetate copolymer (EVA) and Polyurethane (PU) foaming materials for midsoles, various rubbers for outsoles, thermoplastic Polyurethane (TPU) for vamps, polyvinyl chloride (PVC) synthetic leather, terylene, nylon and other fabrics. In the mass production links of cutting, stamping, molding, assembling and the like of shoe materials, a large amount of leftover materials are inevitably generated. Industry statistics indicate that the amount of solid waste produced can generally be 10% to 25% of the total raw material input. The waste materials have complex components, such as ethylene-vinyl acetate copolymer (EVA) foaming remainder, rubber mixed sizing material, fabric fragments, composite materials and the like, and generally have the characteristics of stable chemical properties and difficult degradation in natural environment. For a long time, for these huge amounts of shoe material waste, the treatment method generally adopted in the industry is simple landfill or incineration. Landfill disposal not only continuously encroaches on precious land resources, but also has the risk of long-term infiltration of polluted soil and underground water by certain chemical additives, and if the incineration disposal is improperly controlled, harmful gas can be released, secondary air pollution is generated, and resources are thoroughly wasted. With the increasingly strict arousal of global environmental protection consciousness and environmental regulations, the non-sustainability of the 'end treatment' mode is increasingly highlighted, so that the efficient and high-valued resource utilization of the solid waste in the shoe industry becomes a core pain point and urgent subject related to the green transformation and sustainable development of the industry. Disclosure of Invention The present invention is directed to a bio-based composite, a method of making and applications thereof, which overcomes at least one of the above-mentioned drawbacks of the prior art. To achieve the purpose, the invention adopts the following technical scheme: The invention provides a bio-based composite material which comprises, by mass, 35-55 parts of petroleum-based polymer base materials, 5.25-16.5 parts of petroleum-based polymer leftover materials, 1.75-16.5 parts of biomass fibers and 30-45 parts of auxiliary materials. Preferably, the biomass fiber is bamboo powder, tea stalk or hemp rope treated by chemical solution and surfactant. Preferably, the petroleum-based polymer is one or more of butadiene rubber, styrene-butadiene rubber, isoprene rubber. Preferably, the petroleum-based polymer base material comprises the following components, by mass, 25 parts of butadiene rubber, 8 parts of styrene-butadiene rubber and 5 parts of isoprene rubber. Preferably, the auxiliary materials comprise, by mass, 0.0032 parts of transparent zinc carbonate, 0.3 part of stearic acid, 0.3 part of protective agent, 0.0012 part of anti-aging agent, 0.8017 parts of active agent, 0.65 part of accelerator, 0.25 part of yellowing resistance agent, 22 parts of silicon dioxide, 8 parts of plasticizer and 5 parts of sulfur-containing silane coupling agent. The invention also provides a preparation method of the bio-based composite material, which is used for the bio-based composite material and comprises the following steps of S1 preheating processing equipment to 60-80 ℃, adding petroleum-based polymer base materials and pretreated petroleum-based polymer leftover materials, plasticating for 0.8-1.5 min, S2 adding auxiliary materials into the processing system of the S1, mixing at 60-80 ℃ to obtain a mixed sizing material, S3 immediately discharging rubber to obtain a rubber compound when the mixed sizing material obtained in the S2 reaches 100-120 ℃, S4 cond