WO2022012086A1 - 一种家具专用仿木复合塑料及制备方法 - Google Patents

一种家具专用仿木复合塑料及制备方法 Download PDF

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WO2022012086A1
WO2022012086A1 PCT/CN2021/083731 CN2021083731W WO2022012086A1 WO 2022012086 A1 WO2022012086 A1 WO 2022012086A1 CN 2021083731 W CN2021083731 W CN 2021083731W WO 2022012086 A1 WO2022012086 A1 WO 2022012086A1
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wood
powder
pigment
weight
parts
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PCT/CN2021/083731
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French (fr)
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胡森川
杨曦
罗万象
陈志益
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杨曦
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Definitions

  • the invention belongs to the field of composite plastic furniture, in particular to a wood-like composite plastic specially used for furniture and a preparation method.
  • thermoplastic processing material plastic can easily process furniture of various shapes, making the home furnishing market colorful.
  • plastic directly for furniture production has poor texture and high cost. Therefore, alternatives to furniture materials are constantly being explored in the field of architecture.
  • plywood has been used for furniture for a long time, and the board is obtained by gluing and pressing waste wood chips.
  • glue due to the large amount of glue used in plywood, the problem of releasing formaldehyde is serious, polluting the environment and affecting home health.
  • the processing of plywood into furniture is complicated, which is different from the rapid prototyping of plastic furniture at one time.
  • Wood-plastic composite material is a composite material made of hot-melt polymer and wood materials such as sawdust, straw, rice husk, etc. through auxiliary additives. Due to its low cost, no pollution, and green environmental protection, it can be a good substitute for wood, plastic, and glue plywood, which can be widely used in furniture, home improvement, open spaces, hydrophilic landscapes, villa terraces, landscape decoration, siding, Siding, benches, fences, planks, etc., wood-plastic composite furniture products are harmless to the human body, no dry cracking deformation, no mildew, no pollution, and the texture is the closest to solid wood.
  • the wood-plastic material processing fixture can extrude and mold wood-grain products at one time through different pigments and coloring masterbatches, which can save secondary processing such as printing and skinning, reduce costs and greatly improve production efficiency.
  • Furniture made from wood-plastic materials can be molded at one time or made into boards, and wood can be sawed, cut, drilled, and nailed like wood.
  • the use of wood-plastic materials for furniture has become a typical environmentally friendly product for resource recycling.
  • wood-plastic materials can be directly thermoplastic molded into various shapes at one time, which greatly improves the production efficiency of furniture manufacturers.
  • the research on wood-plastic materials mainly focuses on making wood materials, pigments, and inorganic substances better attached and dispersed in wood-plastic materials through coupling, dispersion, gluing, etc., such as Kristiina grafting styrene-ethylene- Butadiene-styrene ternary block copolymer was used as a compatibilizer for LDPE/wood powder system. Transmission electron microscope observation found that the wood powder was evenly distributed and the compatibility was greatly improved; Li Siliang, Liu Yifan, etc. How to improve the interfacial bonding of plant fiber/thermoplastic resin was discussed.
  • the bonding between inorganic powder, pigment and wood material straw, sawdust and rice husk has not been solved, especially the poor bonding between pigment and wood material.
  • the pigment often appears as a floating material, which is not only easy to fade, but also directly Affects the imitation wood effect.
  • the present invention proposes a wood-like composite plastic for furniture.
  • a wood-like composite plastic for furniture By pre-coloring the wood material, the wood-like effect is improved and the wood-like color is stable. ; further provide a preparation method for obtaining the wood-like composite plastics special for the furniture.
  • the present invention provides a preparation method of wood-like composite plastic specially for furniture, which is characterized in that the specific preparation method is as follows:
  • step (2) adding the wood powder of preloaded aluminum hydroxide and pigment obtained in step (1), polyethylene wax, and stearic acid amide into a mixer for high-speed dispersion, so that the wood powder of preloaded aluminum hydroxide and pigment is disintegrated, and Surface modification to obtain modified material;
  • step (3) 40-45 parts by weight of modified material obtained in step (2), 30-40 parts by weight of polypropylene, 3-5 parts by weight of compatibilizer, 10-15 parts by weight of marble powder, 0.5-1 parts by weight of terpene resin parts by weight, 3-5 parts by weight of lubricant, 0.1-0.2 parts by weight of antioxidant, 0.02-0.05 part by weight of ultraviolet absorber are added into a mixer to mix evenly, and then sent to a twin-screw extruder for melting, kneading, extrusion and granulation to obtain
  • the utility model relates to an imitation wood composite plastic specially used for furniture.
  • the nano-ceramic pigment, dispersant, and saturated aluminum sulfate solution are prepared in parts by weight: 3-5 weight parts of nano-ceramic pigment, 0.1-0.2 weight part of dispersant, and 30-50 weight parts of saturated aluminum sulfate solution .
  • the nano-ceramic pigments described in step (1) are refined ceramic pigments obtained by sintering, such as teak red ceramic pigments, yellow bismuth vanadate ceramic pigments; pigments can be specifically selected according to color needs; ceramic pigments not only The gloss is good, and it is resistant to high temperature processing without discoloration, which can fully guarantee the texture of imitation wood.
  • the dispersant described in the step (1) is glycerol monostearate, dispersed by the dispersant, in a ball mill, ground for 10-15min at 50rpm, so that the nano-ceramic pigment is dispersed in the saturated aluminum sulfate solution. Slurry is formed.
  • the refined wood powder described in step (1) is the pre-refinement wood powder with a particle size of less than 50 ⁇ m; preferably at least one of sawdust powder, straw powder, rice husk powder, and peanut shell; particularly preferably
  • the refined wood powder is composed of straw powder and rice husk powder in a mass ratio of 3:1.
  • the mass ratio of straw powder and rice husk powder is selected to be 3:1, which can make the rice husk powder in the origin. All powder and straw powder are used.
  • the straw powder and rice husk powder are compounded, the straw is fibrous, and the degree of rice husk fiber is low, which can be synergistic and is conducive to processing.
  • the present invention first disperses the nano ceramic pigments in saturated aluminum sulfate solution, and soaks the wood powder to infiltrate the aluminum sulfate and nano ceramic pigments in the micropores of the wood powder; filter out excess pulp
  • the wood powder adsorbing aluminum sulfate and nano-ceramic pigments is contacted with sodium hydroxide lye.
  • sodium hydroxide lye aluminum sulfate becomes aluminum hydroxide and solidifies. On the one hand, it is fixed inside the wood powder.
  • the rigidity of the wood powder is increased, the density is better, and it is closer to the characteristics of solid wood; on the other hand, the nano-ceramic pigment is fixed on the wood powder, which can effectively prevent the powder from being de-powdered, especially the pigment and the wood powder are closely combined. There will be no floating material, and the imitation wood is strong.
  • the sodium hydroxide solution in step (1) is a sodium hydroxide solution with a mass concentration of 10%, and the addition amount is 15-20% of the mass of the wood powder for adsorbing aluminum sulfate and pigment.
  • the preloaded aluminum hydroxide and the wood powder of the pigment in step (2) are 100 parts by weight, 1-3 parts by weight of polyethylene wax, and 1-2 parts by weight of stearic acid amide; the speed of high-speed stirring of the mixer is 1000-1200rpm; stirring and dispersing time 15-20min, through high-speed stirring, the wood powder preloaded with aluminum hydroxide and pigments is disintegrated into fine particles, and the interface is hydrophobic, and the compatibility with polypropylene is improved.
  • the polypropylene in step (3) is selected from one of Sinopec's EPC30R-H, K1008 and K1712, which has good fluidity and rigidity.
  • the marble powder in step (3) is selected from 1250 mesh marble powder.
  • the compatibilizer described in step (3) selects easy-to-plastic maleic anhydride-grafted polypropylene provided by Shenzhen Paster New Material Technology Co., Ltd. It has obvious effect on increasing the compatibility between wood flour and polypropylene.
  • the terpene resin in step (3) has good adhesion, and promotes mutual adhesion of wood powder and adhesion with polypropylene during thermal processing, so that the obtained wood-like composite plastic is dense.
  • the lubricant described in step (3) is selected from one of microcrystalline wax, butyl stearate, and liquid paraffin; it can effectively increase the lubricity of extrusion processing, prevent thermal deterioration of wood-like materials, and improve products. Glossy appearance.
  • the antioxidant in step (3) is selected from one of antioxidant 1010, antioxidant 168, and antioxidant DSTP.
  • the ultraviolet absorber described in step (3) selects commercially available ultraviolet absorber UV-P, ultraviolet absorber UV-O, ultraviolet absorber UV-9, ultraviolet absorber UV-531, ultraviolet absorber UV-RMB at least one of them.
  • the twin-screw extruder in step (3) adopts a co-rotating twin-screw extruder with a screw length-diameter ratio L/D of 35-40, and the temperature of the suitable twin-screw extruder extruder is controlled at 160 -190°C, the screw speed is 120-150 rpm.
  • the present invention provides a wood-like composite plastic specially prepared by the above method for furniture.
  • color powder color masterbatch
  • the colorant is more dispersed in the polymer plastic, and the binding with the wood component is poor, so that the color of the obtained imitation wood product is attached to the wood powder.
  • the surface is not only poor in imitation wood, but also easy to remove pigment.
  • the present invention pre-colors the wood material, so that the wood-like effect is improved and the wood-like color is stable;
  • saturated aluminum sulfate solution by soaking wood powder, aluminum sulfate and nano-ceramic pigments are infiltrated in the micropores of wood powder; the principle of using lye to change aluminum sulfate into solidified aluminum hydroxide makes the aluminum sulfate adsorbed by wood powder.
  • the rigidity of the wood powder is increased, the density is better, and it is closer to the characteristics of solid wood; moreover, the nano-ceramic pigments are fixed in the wood powder, which can effectively prevent the pigment from peeling off.
  • Powder, especially pigment and wood powder are closely combined, no floating material will appear in the product, and the imitation wood is strong.
  • the obtained imitation wood product is loose, and the pretreatment of the wood powder through the present invention makes the imitation wood product prepared by the obtained imitation wood composite plastic high in density. , which is closer to the feeling of solid wood.
  • a wood-imitation composite plastic for furniture and a preparation method thereof the notable features and technical advantages are:
  • the wood material is colored in advance, so that the effect of imitating wood is improved, and the color and luster of imitation wood are stable.
  • the present invention utilizes the principle that lye makes aluminum sulfate into solidified aluminum hydroxide, so that the aluminum sulfate adsorbed by wood powder becomes aluminum hydroxide and solidifies, which is not only fixed in the interior of wood powder, but also increases the rigidity of wood powder , the density is better, and it is closer to the characteristics of solid wood.
  • the present invention fixes the nano-ceramic pigments on the wood powder, which effectively prevents the depulverization of the pigments, especially the close combination of the pigments and the wood powder, no floating material in the product, strong imitation wood, and bright color of the nano-ceramic pigments , will not be affected by high temperature processing and aging and fading in use.
  • the present invention is guided by the needs of market customers, fully integrates and coordinates the coordination of raw materials, rationally utilizes waste wood powder materials, and the obtained wood-like composite plastics can be directly extruded to prepare wood-like boards, and can also be directly extruded to form various types of wood-like materials. It can also be directly extruded and molded into furniture panels, etc. It is easy to use and is the best choice for furniture manufacturers.
  • Fig. 1 is a furniture board extruded from wood-like composite plastics for furniture obtained in Example 1 of the present invention.
  • the surface is uniform in color and glossy.
  • step (2) adding the preloaded aluminum hydroxide obtained in step (1), the wood powder 100kg of the pigment, the polyethylene wax 3kg, and the stearic acid amide 1kg into the mixer, stirring at a high speed for 20min at a rotating speed of 1000rpm, and stirring at a high speed to make
  • the wood powder preloaded with aluminum hydroxide and pigment is disaggregated into fine particles, and the interface is hydrophobic, and the compatibility with polypropylene is improved to obtain a modified material;
  • step (2) modified material 45kg obtained in step (2), polypropylene EPC30R-H 40kg, compatibilizer 5kg (easy plastic maleic anhydride grafted polypropylene provided by Shenzhen Paster New Material Technology Co., Ltd.), 1250 10kg of mesh marble powder, 0.5kg of terpene resin, 3kg of lubricant microcrystalline wax, 0.1kg of antioxidant 1010, 0.02kg of ultraviolet absorber UV-O were added to the mixer, mixed at 100 ° C for 45min, mixed evenly, and then sent to the twin screw The extruder is melt-mixed, extruded and pelletized.
  • compatibilizer 5kg Easy plastic maleic anhydride grafted polypropylene provided by Shenzhen Paster New Material Technology Co., Ltd.
  • 1250 10kg of mesh marble powder 0.5kg of terpene resin, 3kg of lubricant microcrystalline wax, 0.1kg of antioxidant 1010, 0.02kg of ultraviolet absorber UV-O were added to the mixer, mixed at 100 ° C for 45min,
  • the twin-screw extruder adopts a co-rotating twin-screw extruder with a screw length-to-diameter ratio L/D of 35.
  • the extruder temperature is controlled at 160-190 ° C, and the number of screw revolutions is 120. rev/min to obtain a wood-imitation composite plastic specially used for furniture.
  • the imitation wood composite plastic obtained from the scheme of Example 1 was added to the conical screw profile extruder, and the temperature was controlled at 190-200 ° C, and the louver profiles were directly extruded, which were used for furniture and wardrobe doors.
  • the extrusion process is stable, the pigment is uniform, there is no powder removal, the surface is bright, and the effect of imitating solid wood is obvious.
  • the extrusion sample is shown in Figure 1.
  • step (2) adding the preloaded aluminum hydroxide obtained in step (1), the wood powder 100kg of the pigment, the polyethylene wax 2kg, and the stearic acid amide 2kg into the mixer, stirring at a high speed for 20min at a rotating speed of 1200rpm, and stirring at a high speed to make
  • the wood powder preloaded with aluminum hydroxide and pigment is disaggregated into fine particles, and the interface is hydrophobic, and the compatibility with polypropylene is improved to obtain a modified material;
  • step (2) modified material 45kg obtained in step (2), polypropylene EPC30R-H 40kg, compatibilizer 5kg (easy plastic maleic anhydride grafted polypropylene provided by Shenzhen Paster New Material Technology Co., Ltd.), 1250 15kg of mesh marble powder, 1kg of terpene resin, 3kg of liquid paraffin, 0.2kg of antioxidant DSTP, 0.05kg of ultraviolet absorber UV-9 were added to the mixer, mixed at 100 ° C for 45 minutes, mixed evenly, and then sent to twin-screw extrusion
  • the twin-screw extruder adopts a co-rotating twin-screw extruder with a screw L/D ratio of 35.
  • the temperature of the extruder is controlled at 160-190 °C, and the screw speed is 120 rpm/ A kind of imitation wood composite plastic special for furniture is obtained.
  • Nano teak red ceramic pigment 3kg, dispersant 0.1kg of glyceryl monostearate are dispersed in 40kg saturated aluminum sulfate solution, grind 15min under 50rpm rotating speed through ball mill, make nano teak red ceramic pigment be dispersed in saturated sulfuric acid Slurry is formed in the aluminum solution; the pre-refined grain size is less than 50 ⁇ m by the straw powder and rice husk powder with a mass ratio of 3:1 composite wood powder, add excess slurry, slowly stir and soak for 3h, and then use 300 mesh
  • the filter screen filters out the excess slurry, and the obtained wood powder for adsorbing aluminum sulfate and pigments is added to the mixer, and the sodium hydroxide solution is sprayed while stirring, and the sodium hydroxide liquid level mass concentration is 10% sodium hydroxide solution,
  • the added amount is 20% of the mass of the wood powder for adsorbing aluminum sulfate and the pigment, and the reaction is stirred for 35 minutes, and the aluminum sulfate is changed
  • step (2) adding the preloaded aluminum hydroxide obtained in step (1), the wood powder 100kg of the pigment, the polyethylene wax 1-3kg, and the stearic acid amide 1-2kg into the mixer, and stirring at a high speed for 15 minutes at a rotating speed of 1000-1200rpm -20min, through high-speed stirring, the wood powder preloaded with aluminum hydroxide and pigment is disintegrated into fine particles, and the interface is hydrophobic, and the compatibility with polypropylene is improved to obtain a modified material;
  • step (2) adding the wood powder 100kg, polyethylene wax 3kg, stearic acid amide 1kg of the preloaded pigment obtained in step (1) into the mixer, stirring at a high speed for 20min at a rotating speed of 1000rpm, by high-speed stirring, the preloaded pigment is
  • the wood powder is disintegrated into fine particles, and the interface is hydrophobic, and the compatibility with polypropylene is improved to obtain a modified material;
  • step (2) modified material 45kg obtained in step (2), polypropylene EPC30R-H 40kg, compatibilizer 5kg (easy plastic maleic anhydride grafted polypropylene provided by Shenzhen Paster New Material Technology Co., Ltd.), 1250 10kg of mesh marble powder, 0.5kg of terpene resin, 3kg of lubricant microcrystalline wax, 0.1kg of antioxidant 1010, 0.02kg of ultraviolet absorber UV-O were added to the mixer, mixed at 100 ° C for 45min, mixed evenly, and then sent to the twin screw The extruder is melt-mixed, extruded and pelletized.
  • compatibilizer 5kg Easy plastic maleic anhydride grafted polypropylene provided by Shenzhen Paster New Material Technology Co., Ltd.
  • 1250 10kg of mesh marble powder 0.5kg of terpene resin, 3kg of lubricant microcrystalline wax, 0.1kg of antioxidant 1010, 0.02kg of ultraviolet absorber UV-O were added to the mixer, mixed at 100 ° C for 45min,
  • the twin-screw extruder adopts a co-rotating twin-screw extruder with a screw length-to-diameter ratio L/D of 35.
  • the extruder temperature is controlled at 160-190 ° C, and the number of screw revolutions is 120. rev/min to obtain a wood-imitation composite plastic specially used for furniture.
  • Comparative Example 1 After the wood powder adsorbs aluminum sulfate and pigment, it is not treated with sodium hydroxide to form solidified aluminum hydroxide. Since the wood powder does not solidify aluminum hydroxide, the rigidity and compactness of the wood powder are poor; the fixation of the pigment is also relatively poor. Poor, the combination of pigment and wood powder is poor when extruding to prepare imitation wood products, and the imitation wood effect is affected.
  • step (1) wood powder 45kg of pigment, polypropylene EPC30R-H 40kg, compatibilizer 5kg (easy plastic maleic anhydride provided by Shenzhen Paster New Material Technology Co., Ltd. Grafted polypropylene), 10kg of 1250-mesh marble powder, 0.5kg of terpene resin, 3kg of lubricant microcrystalline wax, 0.1kg of antioxidant 1010, 0.02kg of ultraviolet absorber UV-O were added to the mixer, mixed at 100 ° C for 45min, mixed It is uniform, and then sent to a twin-screw extruder for melting, kneading, extrusion and granulation.
  • the twin-screw extruder adopts a co-rotating twin-screw extruder with a screw length-to-diameter ratio L/D of 35, and the extruder temperature is controlled at 160- 190° C., the screw speed is 120 rpm, and a wood-imitation composite plastic for furniture is obtained.
  • Example 1-3 The wood-like composite plastic particles obtained in Example 1-3 and Comparative Example 1-2 were added to the conical screw profile extruder, the temperature was controlled at 190-200 ° C, the louver profiles were directly extruded, and the color material uniformity of the product was observed. Powder removal, surface brightness, as shown in Table 1.
  • the wood-like composite plastic granules obtained in Examples 1-3 and Comparative Examples 1-2 were injection-molded and proofed at 200°C, and cut into test samples of 80mm ⁇ 10mm ⁇ 4mm. Refer to GB/T 1843-2008 "Izod Impact Strength”. The standard test notched Izod impact strength of "Determination" is shown in Table 1.
  • the present invention improves the effect of imitating wood by coloring the wood material in advance, which is manifested in stable imitation wood color, no powder removal, good compactness, and closer to the characteristics of solid wood.

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Abstract

一种家具专用仿木复合塑料及制备方法，首先将纳米陶瓷颜料分散在饱和的硫酸铝溶液中，通过浸泡木质粉，使硫酸铝和纳米陶瓷颜料浸润在木质粉的微孔；在氢氧化钠碱液作用下，硫酸铝变为氢氧化铝并固化，一方面固定在木质粉的内部，使木质粉的刚性增加，密实度更好，更接近于实木特性；另一方面，将纳米陶瓷颜料固定在木质粉，有效防止颜料的脱粉，尤其是颜料与木质粉结合紧密，在制品中不会出现浮料，仿木感强。得到的仿木复合塑料可以直接挤出制备仿木板材，也可以直接挤出形成各类型材，还可以直接挤出模塑成型家具面板等，使用方便。

Description

一种家具专用仿木复合塑料及制备方法 技术领域
本发明属于复合塑料家具领域，具体涉及一种家具专用仿木复合塑料及制备方法。
背景技术
随着家具行业的快速发展，各种造型的家具被设计出来。纯木质家具不但资源损耗量大成本高，而且制作工艺复杂，难以满足各种造型设计的家具。
塑料作为一种热塑性加工材料，可以很方便的加工各种造型的家具，使得家居市场变得异彩纷呈。但直接将塑料用于家具生产质感差，成本也较高。因此，在建筑领域不断探索家具材质的替代品。为了达到良仿木质感，长期以来家具采用胶合板，利用废弃木屑通过胶合压制得到板材。然而胶合板材由于采用大量胶水，释放甲醛问题严重，污染环境，影响居家健康。另外，胶合板加工成家具工艺复杂，不同于塑料家具一次模塑快速成型。
木塑复合材料是将热熔性聚合物与木质材料如木屑、秸秆、稻壳等通过辅助助剂复合而成的复合材料。由于成本低、无污染、绿色环保，可有良好的替代木材、塑料、以及胶水压合板，可以广泛的应用于家具、家装、露天场所、亲水景观、别墅露台、景观装饰、护墙板、壁板、长凳、围栏、铺板等，木塑复合材质家具产品具有对人体无害、无干裂变形、不发霉、无污染差，与实木质感最为接近。尤其是木塑材质加工夹具通过不同颜料和着色母粒，一次性挤出模塑木纹产品，可省去印刷、贴皮等二次加工，成本降低，生产效率大幅提高。木塑材料制备家具可以一次性模塑成型，也可以制备成板材，木材一样可锯、创、钻、钉。木塑材质用于家具成为目前资源再生化利用的典型环保产品。 特别是木塑材质在加工家具时可以直接热塑模压一次成型各种造型的板材，大大提升了家具制造商的生产效率。
但是目前木塑材质在家具应用中，其仿木效果较差，一方面，仍然需要贴皮处理；另一方面，研究如何通过控制色料获得仿木效果好的木塑材质。木塑材质中为了降低成本，使用的无机填充料容易脱粉，使用的颜料与木质成分整体相容性差，影响整体木质感。
目前，木塑材质主要研究集中在通过偶连、分散、胶合等使木质材料、颜料、无机物能够更好地附着分散在木塑材质中，如Kristiina用马来酸接枝苯乙烯-乙烯-丁二烯-苯乙烯三元嵌段共聚物作为LDPE/木质粉体系的增容剂透射电镜观察发现，木质粉分布均匀，相容性大大提高；李思良、刘易凡等根据木质粉填充改性HDPE，对如何改善植物纤维/热塑性树脂的界面胶接作用进行了探讨。然而无机粉体、颜料与木质材料秸秆、木屑、稻壳的结合性一直没有解决，特别是颜料与木质材料结合较差，在制品中颜料常常表现为浮着料，不但容易掉色，而且会直接影响仿木效果。
发明内容
为了得到稳定色泽、耐久性和良好仿木效果的家具专用仿木复合塑料，本发明提出一种家具专用仿木复合塑料，通过预先对木质材质着色，使得仿木效果得到提升，仿木色泽稳定；进一步提供获得所述家具专用仿木复合塑料的制备方法。
首先，本发明提供一种家具专用仿木复合塑料的制备方法，其特征在于，具体制备方法如下：
(1)将纳米陶瓷颜料、分散剂分散在饱和硫酸铝溶液中，经球磨机研磨配 制成浆料；将细化的木质粉加入浆料，缓慢搅拌浸泡1-3h，然后滤除多余的浆料，将得到的吸附硫酸铝和颜料的木质粉加入搅拌机，在搅拌的同时喷入氢氧化钠液，硫酸铝变为氢氧化铝并固化；然后水洗、压滤，在70-80℃烘干，得到预载氢氧化铝、颜料的木质粉；
(2)将步骤(1)得到的预载氢氧化铝、颜料的木质粉与聚乙烯蜡、硬脂酸酰胺加入混合机高速分散，使预载氢氧化铝、颜料的木质粉解团，并表面改性，得到改性料；
(3)将步骤(2)得到的改性料40-45重量份、聚丙烯30-40重量份、相容剂3-5重量份、大理石粉10-15重量份、萜烯树脂0.5-1重量份、润滑剂3-5重量份、抗氧化剂0.1-0.2重量份、紫外线吸收剂0.02-0.05重量份加入混合机混合均匀，然后送入双螺杆挤出机熔融混炼挤出造粒，得到一种家具专用仿木复合塑料。
优选的，步骤(1)中纳米陶瓷颜料、分散剂、饱和硫酸铝溶液按照重量份配制：纳米陶瓷颜料3-5重量份、分散剂0.1-0.2重量份、饱和硫酸铝溶液30-50重量份。
进一步优选的，步骤(1)中所述纳米陶瓷颜料为经烧结得到的细化的陶瓷颜料，如柚木红陶瓷颜料、黄色钒酸铋陶瓷颜料；颜料可以根据颜色需要具体选定；陶瓷颜料不但光泽好，而且耐高温加工而不变色，能够够充分保证仿木的质感。
进一步优选的，步骤(1)中所述分散剂为单硬脂酸甘油酯，通过分散剂分散，在球磨机中，在50rpm转速下研磨10-15min，使纳米陶瓷颜料分散在饱和的硫酸铝溶液中形成浆料。
进一步优选的，步骤(1)中所述细化木质粉为预先细化处理的粒径小于50μm的木质粉；优选木屑粉、秸秆粉、稻壳粉、花生壳中的至少一种；特别优选的，所述细化木质粉为秸秆粉与稻壳粉以质量比3∶1复合而成。为了保证仿木品质稳定，使用同一产地的秸秆粉与稻壳粉，同时为了最大化利用同一地方的木质材料资源，选定秸秆粉与稻壳粉质量比3∶1复合能够使产地的稻壳粉和秸秆粉全部应用。再者，秸秆粉和稻壳粉复合，秸秆为纤维状，稻壳纤维程度低，可以协同，利于加工。
鉴于木质材料具有良好的吸附性，本发明首先将纳米陶瓷颜料分散在饱和的硫酸铝溶液中，通过浸泡木质粉，使硫酸铝和纳米陶瓷颜料浸润在木质粉的微孔；滤除多余的浆料后，将吸附硫酸铝和纳米陶瓷颜料的木质粉与氢氧化钠碱液接触，在氢氧化钠碱液作用下，硫酸铝变为氢氧化铝并固化，一方面固定在木质粉的内部，使木质粉的刚性增加，密实度更好，更接近于实木特性；另一方面，将纳米陶瓷颜料固定在木质粉，有效防止颜料的脱粉，尤其是颜料与木质粉结合紧密，在制品中不会出现浮料，仿木感强。
进一步优选的，步骤(1)中所述氢氧化钠液为质量浓度为10％的氢氧化钠溶液，加入量为吸附硫酸铝和颜料的木质粉质量的15-20％。
优选的，步骤(2)所述预载氢氧化铝、颜料的木质粉为100重量份、聚乙烯蜡1-3重量份、硬脂酸酰胺1-2重量份；混合机高速搅拌的速度为1000-1200rpm；搅拌分散时间15-20min，通过高速搅拌，是预载氢氧化铝、颜料的木质粉解团为微细颗粒，同时界面疏水，与聚丙烯相容性提升。
优选的，步骤(3)中所述聚丙烯选用生产商为中石化的EPC30R-H、K1008、K1712中的一种，其具有较好的流动性和刚性。
优选的，步骤(3)中所述大理石粉选用1250目大理石粉。
优选的，步骤(3)中所述相容剂选用深圳帕斯特新材料科技有限公司提供的易塑马来酸酐接枝聚丙烯。对增加木质粉与聚丙烯相容性作用明显。
优选的，步骤(3)中所述萜烯树脂具有良好的粘合性，在热加工时促进木质粉的相互粘合以及与聚丙烯的粘合，使得得到的仿木复合塑料密实。
优选的，步骤(3)中所述润滑剂选用微晶蜡、硬脂酸丁酯、液体石蜡中的一种；其能够有效增加挤出加工润滑性、防止仿木材料的热劣化、改善制品外观光泽。
优选的，步骤(3)中所述抗氧化剂选用抗氧剂1010、抗氧剂168、抗氧剂DSTP中的一种。
优选的，步骤(3)中所述紫外线吸收剂选用市售紫外线吸收剂UV-P、紫外线吸收剂UV-O、紫外线吸收剂UV-9、紫外线吸收剂UV-531、紫外线吸收剂UV-RMB中的至少一种。
优选的，步骤(3)中所述双螺杆挤出机采用螺杆长径比L/D为35-40的同向双螺杆挤出机，合适的双螺杆挤出机挤出机温度控制在160-190℃，螺杆转数120-150转/分。
再者，本发明提供由上述方法制备得到的一种家具专用仿木复合塑料。通常的，在木塑材质中加入色粉(色母料)，色料更多的分散在聚合物塑料中，与木质分的结合性较差，从而使得得到的仿木制品颜色附着在木质粉的表面，不但仿木效果差，而且容易脱颜料。为了得到稳定色泽、耐久性和良好仿木效果的家具专用仿木复合塑料，本发明通过预先对木质材质着色，使得仿木效果得到提升，仿木色泽稳定；具体的，选用纳米陶瓷颜料分散在饱和的硫酸铝溶液 中，通过浸泡木质粉，使硫酸铝和纳米陶瓷颜料浸润在木质粉的微孔；利用碱液使硫酸铝变为固化的氢氧化铝的原理，使木质粉吸附的硫酸铝变为氢氧化铝并固化，不但固定在木质粉的内部，使木质粉的刚性增加，密实度更好，更接近于实木特性；而且，将纳米陶瓷颜料固定在木质粉，有效防止颜料的脱粉，尤其是颜料与木质粉结合紧密，在制品中不会出现浮料，仿木感强。常规的的，在高木质粉使用量的仿木材质中，得到的仿木制品疏松，而本发明通过的木质粉的预处理，使得得到的仿木复合塑料制备得到的仿木制品密实度高，更接近于实木感。
一种家具专用仿木复合塑料及制备方法，显著地特点和技术优势在于：
(1)本发明通过预先对木质材质着色，使得仿木效果得到提升，仿木色泽稳定。
(2)本发明利用碱液使硫酸铝变为固化的氢氧化铝的原理，使木质粉吸附的硫酸铝变为氢氧化铝并固化，不但固定在木质粉的内部，使木质粉的刚性增加，密实度更好，更接近于实木特性。
(3)本发明将纳米陶瓷颜料固定在木质粉，有效防止颜料的脱粉，尤其是颜料与木质粉结合紧密，在制品中不会出现浮料，仿木感强，而且纳米陶瓷颜料色泽鲜艳，不会受高温加工和使用中老化褪色。
(4)本发明以市场客户使用需求为导向，充分综合、协调原料配合，合理利用废弃木质粉材料，得到的仿木复合塑料可以直接挤出制备仿木板材，也可以直接挤出形成各类型材，还可以直接挤出模塑成型家具面板等，使用方便，是家具厂商生产的较佳选择。
附图说明
以下结合附图对本发明的有益效果进行进一步说明：
图1是本发明实施例1得到家具专用仿木复合塑料挤塑成型的家具板材。其表面色泽均匀，光泽好。
具体实施方式
下面通过实施例旨在进一步描述本发明内容，而不是对本发明权利要求的保护范围的限制。
实施例1
(1)将纳米黄色钒酸铋陶瓷颜料5kg、分散剂单硬脂酸甘油酯0.1kg分散在50kg饱和硫酸铝溶液中，经球磨机在50rpm转速下研磨15min，使纳米黄色钒酸铋陶瓷颜料分散在饱和的硫酸铝溶液中形成浆料；将预先细化处理的粒径小于50μm的由秸秆粉与稻壳粉以质量比3∶1复合的木质粉，加入过量的浆料，缓慢搅拌浸泡1h，然后利用300目的滤网滤除多余的浆料，将得到的吸附硫酸铝和颜料的木质粉加入搅拌机，在搅拌的同时喷入氢氧化钠液，氢氧化钠液位质量浓度为10％的氢氧化钠溶液，加入量为吸附硫酸铝和颜料的木质粉质量的15％，搅拌反应30min，硫酸铝变为氢氧化铝并固化；然后水洗3次、压滤，在70℃烘干，得到预载氢氧化铝、颜料的木质粉；
(2)将步骤(1)得到的预载氢氧化铝、颜料的木质粉100kg、聚乙烯蜡3kg、硬脂酸酰胺1kg加入混合机，在1000rpm的转速下高速搅拌20min，通过高速搅拌，使预载氢氧化铝、颜料的木质粉解团为微细颗粒，同时界面疏水，与聚丙烯相容性提升，得到改性料；
(3)将步骤(2)得到的改性料45kg、聚丙烯EPC30R-H 40kg、相容剂5kg(深圳帕斯特新材料科技有限公司提供的易塑马来酸酐接枝聚丙烯)、1250 目大理石粉10kg、萜烯树脂0.5kg、润滑剂微晶蜡3kg、抗氧化剂1010 0.1kg、紫外线吸收剂UV-O 0.02kg加入混合机，在100℃混合45min，混合均匀，然后送入双螺杆挤出机熔融混炼挤出造粒，双螺杆挤出机采用螺杆长径比L/D为35的同向双螺杆挤出机，挤出机温度控制在160-190℃，螺杆转数120转/分，得到一种家具专用仿木复合塑料。
将实施例1方案得到仿木复合塑料加入锥形螺杆型材挤出机，温度控制在190-200℃，直接挤出百叶型材，用于家具衣柜板门档。挤出过程稳定，色料均匀，无脱粉，表面光亮，仿实木效果明显，挤出样品如附图1所示。
实施例2
(1)将纳米黄色钒酸铋陶瓷颜料5kg、分散剂单硬脂酸甘油酯0.2kg分散在50kg饱和硫酸铝溶液中，经球磨机在50rpm转速下研磨15min，使纳米黄色钒酸铋陶瓷颜料分散在饱和的硫酸铝溶液中形成浆料；将预先细化处理的粒径小于50μm的由秸秆粉与稻壳粉以质量比3∶1复合木质粉，加入过量的浆料，缓慢搅拌浸泡2h，然后利用300目的滤网滤除多余的浆料，将得到的吸附硫酸铝和颜料的木质粉加入搅拌机，在搅拌的同时喷入氢氧化钠液，氢氧化钠液位质量浓度为10％的氢氧化钠溶液，加入量为吸附硫酸铝和颜料的木质粉质量的20％，搅拌反应35min，硫酸铝变为氢氧化铝并固化；然后水洗3次、压滤，在70℃烘干，得到预载氢氧化铝、颜料的木质粉；
(2)将步骤(1)得到的预载氢氧化铝、颜料的木质粉100kg、聚乙烯蜡2kg、硬脂酸酰胺2kg加入混合机，在1200rpm的转速下高速搅拌20min，通过高速搅拌，使预载氢氧化铝、颜料的木质粉解团为微细颗粒，同时界面疏水，与聚丙烯相容性提升，得到改性料；
(3)将步骤(2)得到的改性料45kg、聚丙烯EPC30R-H 40kg、相容剂5kg(深圳帕斯特新材料科技有限公司提供的易塑马来酸酐接枝聚丙烯)、1250目大理石粉15kg、萜烯树脂1kg、液体石蜡3kg、抗氧剂DSTP 0.2kg、紫外线吸收剂UV-9 0.05kg份加入混合机，在100℃混合45min，混合均匀，然后送入双螺杆挤出机熔融混炼挤出造粒，双螺杆挤出机采用螺杆长径比L/D为35的同向双螺杆挤出机，挤出机温度控制在160-190℃，螺杆转数120转/分，得到一种家具专用仿木复合塑料。
实施例3
(1)将纳米柚木红陶瓷颜料3kg、分散剂单硬脂酸甘油酯0.1kg分散在40kg饱和硫酸铝溶液中，经球磨机在50rpm转速下研磨15min，使纳米柚木红陶瓷颜料分散在饱和的硫酸铝溶液中形成浆料；将预先细化处理的粒径小于50μm的由秸秆粉与稻壳粉以质量比3∶1复合木质粉，加入过量的浆料，缓慢搅拌浸泡3h，然后利用300目的滤网滤除多余的浆料，将得到的吸附硫酸铝和颜料的木质粉加入搅拌机，在搅拌的同时喷入氢氧化钠液，氢氧化钠液位质量浓度为10％的氢氧化钠溶液，加入量为吸附硫酸铝和颜料的木质粉质量的20％，搅拌反应35min，硫酸铝变为氢氧化铝并固化；然后水洗3次、压滤，在80℃烘干，得到预载氢氧化铝、颜料的木质粉；
(2)将步骤(1)得到的预载氢氧化铝、颜料的木质粉100kg、聚乙烯蜡1-3kg、硬脂酸酰胺1-2kg加入混合机，在1000-1200rpm的转速下高速搅拌15-20min，通过高速搅拌，是预载氢氧化铝、颜料的木质粉解团为微细颗粒，同时界面疏水，与聚丙烯相容性提升，得到改性料；
(3)将步骤(2)得到的改性料45kg、聚丙烯K1712 30kg、相容剂5kg (深圳帕斯特新材料科技有限公司提供的易塑马来酸酐接枝聚丙烯)、1250目大理石粉15kg、萜烯树脂0.5kg、润滑剂微晶蜡3kg、抗氧化剂1010 0.2kg、紫外线吸收剂UV-9 0.03kg份加入混合机，在80℃混合45min，混合均匀，然后送入双螺杆挤出机熔融混炼挤出造粒，双螺杆挤出机采用螺杆长径比L/D为35的同向双螺杆挤出机，挤出机温度控制在160-190℃，螺杆转数150转/分，得到一种家具专用仿木复合塑料。
对比例1
(1)将纳米黄色钒酸铋陶瓷颜料5kg、分散剂单硬脂酸甘油酯0.1kg分散在50kg饱和硫酸铝溶液中，经球磨机在50rpm转速下研磨15min，使纳米黄色钒酸铋陶瓷颜料分散在饱和的硫酸铝溶液中形成浆料；将预先细化处理的粒径小于50μm的由秸秆粉与稻壳粉以质量比3∶1复合的木质粉，加入过量的浆料，缓慢搅拌浸泡1h，然后利用300目的滤网滤除多余的浆料，将得到的吸附硫酸铝和颜料的木质粉加入搅拌机，然后水洗3次、压滤，在70℃烘干，得到预载颜料的木质粉；
(2)将步骤(1)得到的预载颜料的木质粉100kg、聚乙烯蜡3kg、硬脂酸酰胺1kg加入混合机，在1000rpm的转速下高速搅拌20min，通过高速搅拌，使预载颜料的木质粉解团为微细颗粒，同时界面疏水，与聚丙烯相容性提升，得到改性料；
(3)将步骤(2)得到的改性料45kg、聚丙烯EPC30R-H 40kg、相容剂5kg(深圳帕斯特新材料科技有限公司提供的易塑马来酸酐接枝聚丙烯)、1250目大理石粉10kg、萜烯树脂0.5kg、润滑剂微晶蜡3kg、抗氧化剂1010 0.1kg、紫外线吸收剂UV-O 0.02kg加入混合机，在100℃混合45min，混合均匀，然后 送入双螺杆挤出机熔融混炼挤出造粒，双螺杆挤出机采用螺杆长径比L/D为35的同向双螺杆挤出机，挤出机温度控制在160-190℃，螺杆转数120转/分，得到一种家具专用仿木复合塑料。
对比例1在木质粉吸附硫酸铝和颜料后，没有利用氢氧化钠处理形成固化氢氧化铝，由于木质粉没有固化氢氧化铝，木质粉的刚性和密实度较差；对颜料的固定也较差，在进行挤出制备仿木制品时颜料与木质粉结合较差，仿木效果受影响。
对比例2
(1)将纳米黄色钒酸铋陶瓷颜料5kg、分散剂单硬脂酸甘油酯0.1kg分散在50kg饱和硫酸铝溶液中，经球磨机在50rpm转速下研磨15min，使纳米黄色钒酸铋陶瓷颜料分散在饱和的硫酸铝溶液中形成浆料；将预先细化处理的粒径小于50μm的由秸秆粉与稻壳粉以质量比3∶1复合的木质粉，加入过量的浆料，缓慢搅拌浸泡1h，然后利用300目的滤网滤除多余的浆料，将得到的吸附硫酸铝和颜料的木质粉加入搅拌机，在搅拌的同时喷入氢氧化钠液，氢氧化钠液位质量浓度为10％的氢氧化钠溶液，加入量为吸附硫酸铝和颜料的木质粉质量的15％，搅拌反应30min，硫酸铝变为氢氧化铝并固化；然后水洗3次、压滤，在70℃烘干，得到预载氢氧化铝、颜料的木质粉；
(2)将步骤(1)得到的预载氢氧化铝、颜料的木质粉45kg、聚丙烯EPC30R-H 40kg、相容剂5kg(深圳帕斯特新材料科技有限公司提供的易塑马来酸酐接枝聚丙烯)、1250目大理石粉10kg、萜烯树脂0.5kg、润滑剂微晶蜡3kg、抗氧化剂1010 0.1kg、紫外线吸收剂UV-O 0.02kg加入混合机，在100℃混合45min，混合均匀，然后送入双螺杆挤出机熔融混炼挤出造粒，双螺杆挤出机采用螺杆长 径比L/D为35的同向双螺杆挤出机，挤出机温度控制在160-190℃，螺杆转数120转/分，得到一种家具专用仿木复合塑料。
对比例2没有对预载氢氧化铝、颜料的木质粉解团聚处理，木质粉颗粒较大，分散性差，在进行挤出制备仿木制品时表面粗糙，仿木效果受影响。
挤出仿木制品测试：
将实施例1-3、对比例1-2获得的仿木复合塑料颗粒加入锥形螺杆型材挤出机，温度控制在190-200℃，直接挤出百叶型材，观察制品的色料均匀性，脱粉性，表面光亮性，如表1所示。
将实施例1-3、对比例1-2获得的仿木复合塑料颗粒在200℃注塑打样，裁切为80mm×10mm×4mm的测试样，参考GB/T 1843-2008《悬臂梁冲击强度的测定》的标准测试缺口悬臂梁冲击强度，如表1所示。
参考GB/T 1463《纤维增强塑料密度和相对密度的试验方法》测试挤出样品的密度，如表1所示。
表1：
Figure PCTCN2021083731-appb-000001
通过上述测试，本发明通过预先对木质材质着色，使得仿木效果得到提升，表现在仿木色泽稳定，无脱粉，密实性好，更接近于实木特性。
本发明方案所公开的技术手段不仅限于上述技术手段所公开的技术手段，还包括由以上技术特征任意组合所组成的技术方案。以上所述是本发明的具体实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干在实用性中进行改进，这些改进也视为本发明的保护范围。

Claims (9)

  1. 一种家具专用仿木复合塑料的制备方法，其特征在于，具体制备方法如下：
    (1)将纳米陶瓷颜料、分散剂分散在饱和硫酸铝溶液中，经球磨机研磨配制成浆料；将细化的木质粉加入浆料，缓慢搅拌浸泡1-3h，然后滤除多余的浆料，将得到的吸附硫酸铝和颜料的木质粉加入搅拌机，在搅拌的同时喷入氢氧化钠液，硫酸铝变为氢氧化铝并固化；然后水洗、压滤，在70-80℃烘干，得到预载氢氧化铝、颜料的木质粉；
    (2)将步骤(1)得到的预载氢氧化铝、颜料的木质粉与聚乙烯蜡、硬脂酸酰胺加入混合机高速分散，使预载氢氧化铝、颜料的木质粉解团，并表面改性，得到改性料；
    (3)将步骤(2)得到的改性料40-45重量份、聚丙烯30-40重量份、相容剂3-5重量份、大理石粉10-15重量份、萜烯树脂0.5-1重量份、润滑剂3-5重量份、抗氧化剂0.1-0.2重量份、紫外线吸收剂0.02-0.05重量份加入混合机混合均匀，然后送入双螺杆挤出机熔融混炼挤出造粒，得到一种家具专用仿木复合塑料。
  2. 根据权利要求1所述一种家具专用仿木复合塑料的制备方法，其特征在于：步骤(1)中纳米陶瓷颜料、分散剂、饱和硫酸铝溶液按照重量份配制：纳米陶瓷颜料3-5重量份、分散剂0.1-0.2重量份、饱和硫酸铝溶液30-50重量份。
  3. 根据权利要求1所述一种家具专用仿木复合塑料的制备方法，其特征在于：步骤(1)中所述纳米陶瓷颜料为经烧结得到的柚木红陶瓷颜料或黄色钒酸铋陶瓷颜料；所述分散剂为单硬脂酸甘油酯。
  4. 根据权利要求1所述一种家具专用仿木复合塑料的制备方法，其特征在于：步骤(1)中球磨机在50rpm转速下研磨10-15min。
  5. 根据权利要求1所述一种家具专用仿木复合塑料的制备方法，其特征在于：步骤(1)中所述细化木质粉为预先细化处理的粒径小于50μm的木质粉；所述氢氧化钠液为质量浓度为10％的氢氧化钠溶液，加入量为吸附硫酸铝和颜料的木质粉质量的15-20％。
  6. 根据权利要求1所述一种家具专用仿木复合塑料的制备方法，其特征在于：步骤(2)所述预载氢氧化铝、颜料的木质粉为100重量份、聚乙烯蜡1-3重量份、硬脂酸酰胺1-2重量份；混合机高速搅拌的速度为1000-1200rpm；搅拌分散时间15-20min。
  7. 根据权利要求1所述一种家具专用仿木复合塑料的制备方法，其特征在于：步骤(3)中所述大理石粉选用1250目大理石粉；所述相容剂选用深圳帕斯特新材料科技有限公司提供的易塑马来酸酐接枝聚丙烯；所述润滑剂选用微晶蜡、硬脂酸丁酯、液体石蜡中的一种；所述抗氧化剂选用抗氧剂1010、抗氧剂168、抗氧剂DSTP中的一种；所述紫外线吸收剂选用市售紫外线吸收剂UV-P、紫外线吸收剂UV-O、紫外线吸收剂UV-9、紫外线吸收剂UV-531、紫外线吸收剂UV-RMB中的至少一种。
  8. 根据权利要求1所述一种家具专用仿木复合塑料的制备方法，其特征在于：步骤(3)中所述双螺杆挤出机采用螺杆长径比L/D为35-40的同向双螺杆挤出机，双螺杆挤出机挤出机温度控制在160-190℃，螺杆转数120-150转/分。
  9. 一种由权利要求1-8任一项所述方法制备得到的家具专用仿木复合塑料。
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