CN111607160A - Special wood-like composite plastic for furniture and preparation method thereof - Google Patents
Special wood-like composite plastic for furniture and preparation method thereof Download PDFInfo
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- CN111607160A CN111607160A CN202010669603.6A CN202010669603A CN111607160A CN 111607160 A CN111607160 A CN 111607160A CN 202010669603 A CN202010669603 A CN 202010669603A CN 111607160 A CN111607160 A CN 111607160A
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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
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- 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
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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
- 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
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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
- 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
Abstract
The invention belongs to the field of composite plastic furniture, and particularly relates to a special wood-like composite plastic for furniture and a preparation method thereof. The specific technology is as follows: firstly, dispersing a nano ceramic pigment in a saturated aluminum sulfate solution, and soaking wood powder to enable aluminum sulfate and the nano ceramic pigment to be soaked in micropores of the wood powder; under the action of sodium hydroxide alkali liquor, aluminum sulfate is changed into aluminum hydroxide and is solidified, so that on one hand, the aluminum hydroxide is fixed in the wood powder, the rigidity of the wood powder is increased, the compactness is better, and the wood powder is closer to the characteristics of solid wood; on the other hand, the nano ceramic pigment is fixed on the wood powder, so that the powder falling of the pigment is effectively prevented, and particularly, the pigment and the wood powder are tightly combined, so that floating materials cannot appear in a product, and the wood-like feeling is strong. The obtained wood-like composite plastic can be directly extruded to prepare wood-like plates, can also be directly extruded to form various profiles, can also be directly extruded to form furniture panels and the like, is convenient to use, and is a better choice for furniture manufacturers to produce.
Description
Technical Field
The invention belongs to the field of composite plastic furniture, and particularly relates to a special wood-like composite plastic for furniture and a preparation method thereof.
Background
With the rapid development of the furniture industry, furniture with various shapes is designed. The pure wood furniture has large resource consumption, high cost and complex manufacturing process, and is difficult to meet the requirements of furniture with various modeling designs.
The plastic is used as a thermoplastic processing material, and can be used for conveniently processing furniture with various shapes, so that the home market is colorful. But the texture of the direct application of the plastic to furniture production is poor, and the cost is higher. Therefore, alternatives to the materials of furniture are being sought in the building field. In order to achieve good wood-like texture, the furniture adopts plywood for a long time, and waste wood chips are utilized to obtain a plate through gluing and pressing. However, the plywood material has serious formaldehyde release problem due to the adoption of a large amount of glue, pollutes the environment and influences the household health. In addition, the technology for processing the plywood into the furniture is complex, and is different from the one-time molding and rapid forming of the plastic furniture.
The wood-plastic composite material is a composite material formed by compounding hot-melt polymer with wood materials such as sawdust, straws, rice hulls and the like through auxiliary additives. The wood-plastic composite furniture product has the advantages of no harm to human body, no cracking and deformation, no mildew, no pollution difference and the closest texture to solid wood. Especially, the wood-plastic material processing clamp can be used for extrusion molding of wood grain products at one time through different pigments and coloring master batches, secondary processing such as printing, veneer pasting and the like can be omitted, the cost is reduced, and the production efficiency is greatly improved. The furniture made of the wood-plastic material can be molded at one time and also can be made into boards, and the same wood as the furniture can be sawed, created, drilled and nailed. The wood-plastic material is used for furniture and becomes a typical environment-friendly product for resource recycling at present. Especially, the wood-plastic material can be directly subjected to thermoplastic molding to form various-shaped plates in one step when furniture is processed, so that the production efficiency of furniture manufacturers is greatly improved.
However, the wood-plastic material has poor wood-imitation effect in furniture application, and on one hand, the veneer sticking treatment is still needed; on the other hand, how to obtain the wood-plastic material with good wood-like effect by controlling the pigment is researched. In the wood-plastic material, in order to reduce the cost, the used inorganic filler is easy to remove powder, and the used pigment and the wood component have poor integral compatibility, thereby influencing the integral wood texture.
At present, the main research on wood-plastic materials focuses on better adhesion and dispersion of wood materials, pigments and inorganic substances in the wood-plastic materials through coupling, dispersion, gluing and the like, for example, transmission electron microscope observation of Kristina by using maleic acid grafted styrene-ethylene-butadiene-styrene ternary block copolymer as a compatibilizer of LDPE/wood powder system shows that the wood powder is uniformly distributed, and the compatibility is greatly improved; li Siliang and Liuyi Fan discuss how to improve the interface bonding effect of plant fiber/thermoplastic resin according to the filling of wood powder with modified HDPE. However, the binding property of the inorganic powder and the pigment with the wood material straw, the wood chip and the rice hull is not solved, especially the binding property of the pigment with the wood material is poor, the pigment in the product is often shown as floating material, the color is easy to fade, and the wood-like effect is directly influenced.
Disclosure of Invention
In order to obtain the special wood-like composite plastic for furniture with stable color, durability and good wood-like effect, the invention provides the special wood-like composite plastic for furniture, which improves the wood-like effect and has stable wood-like color by coloring the wood material in advance; further provides a preparation method for obtaining the wood-like composite plastic special for furniture.
Firstly, the invention provides a preparation method of a wood-like composite plastic special for furniture, which is characterized by comprising the following steps of:
(1) dispersing the nano ceramic pigment and the dispersant in a saturated aluminum sulfate solution, and grinding the mixture by a ball mill to prepare slurry; adding the refined wood powder into the slurry, slowly stirring and soaking for 1-3h, then filtering out redundant slurry, adding the obtained wood powder adsorbing aluminum sulfate and pigment into a stirrer, spraying sodium hydroxide solution while stirring, and changing the aluminum sulfate into aluminum hydroxide and curing; then washing with water, filter-pressing, and drying at 70-80 ℃ to obtain wood powder preloaded with aluminum hydroxide and pigment;
(2) adding the pre-loaded aluminum hydroxide and the wood powder of the pigment obtained in the step (1), polyethylene wax and stearic acid amide into a mixer for high-speed dispersion, so that the pre-loaded aluminum hydroxide and the wood powder of the pigment are disaggregated and subjected to surface modification to obtain a modified material;
(3) adding 40-45 parts by weight of the modified material obtained in the step (2), 30-40 parts by weight of polypropylene, 3-5 parts by weight of compatilizer, 10-15 parts by weight of marble powder, 0.5-1 part by weight of terpene resin, 3-5 parts by weight of lubricant, 0.1-0.2 part by weight of antioxidant and 0.02-0.05 part by weight of ultraviolet absorbent into a mixer, uniformly mixing, and then feeding into a double-screw extruder for melting, mixing, extruding and granulating to obtain the wood-like composite plastic special for furniture.
Preferably, the nano ceramic pigment, the dispersant and the saturated aluminum sulfate solution in the step (1) are prepared according to the following weight parts: 3-5 parts of nano ceramic pigment, 0.1-0.2 part of dispersant and 30-50 parts of saturated aluminum sulfate solution.
Further preferably, the nano ceramic pigment in step (1) is a refined ceramic pigment obtained by sintering, such as teak red ceramic pigment and yellow bismuth vanadate ceramic pigment; the pigment can be specifically selected according to the color requirement; the ceramic pigment has good luster, resists high-temperature processing without color change, and can fully ensure the texture of the wood imitation.
Further preferably, the dispersant in step (1) is glyceryl monostearate, and the nano ceramic pigment is dispersed in the saturated aluminum sulfate solution to form slurry by dispersing the dispersant and grinding in a ball mill at the rotating speed of 50rpm for 10-15 min.
Further preferably, the refined wood powder in the step (1) is wood powder with a grain diameter smaller than 50 μm subjected to pre-refining treatment; preferably selecting at least one of wood dust powder, straw powder, rice hull powder and peanut shell; particularly preferably, the refined wood powder is formed by compounding straw powder and rice hull powder in a mass ratio of 3: 1. In order to ensure the stable wood-like quality, the straw powder and the rice hull powder in the same production place are used, and meanwhile, in order to maximally utilize wood material resources in the same place, the straw powder and the rice hull powder are compounded in a mass ratio of 3:1, so that the rice hull powder and the straw powder in the production place can be completely applied. Moreover, the straw powder and the rice hull powder are compounded, the straw is fibrous, the rice hull fiber degree is low, and the straw powder and the rice hull fiber can cooperate to facilitate processing.
In view of good adsorbability of wood materials, the invention firstly disperses the nano ceramic pigment in saturated aluminum sulfate solution, and soaks the wood powder to lead the aluminum sulfate and the nano ceramic pigment to be soaked in micropores of the wood powder; after filtering redundant slurry, contacting the wood powder adsorbing aluminum sulfate and the nano ceramic pigment with sodium hydroxide alkali liquor, and changing the aluminum sulfate into aluminum hydroxide and solidifying the aluminum hydroxide under the action of the sodium hydroxide alkali liquor, so that the aluminum hydroxide is fixed in the wood powder, the rigidity of the wood powder is increased, the compactness is better, and the wood powder is closer to the characteristics of solid wood; on the other hand, the nano ceramic pigment is fixed on the wood powder, so that the powder falling of the pigment is effectively prevented, and particularly, the pigment and the wood powder are tightly combined, so that floating materials cannot appear in a product, and the wood-like feeling is strong.
Further preferably, in the step (1), the sodium hydroxide solution is 10% by mass sodium hydroxide solution, and the addition amount of the sodium hydroxide solution is 15-20% by mass of the wood powder adsorbing aluminum sulfate and pigment.
Preferably, the pre-loaded aluminum hydroxide in the step (2), the wood powder of the pigment are 100 parts by weight, the polyethylene wax is 1-3 parts by weight, and the stearic acid amide is 1-2 parts by weight; the high-speed stirring speed of the mixer is 1000 and 1200 rpm; stirring and dispersing for 15-20min, and high-speed stirring to break the wood powder preloaded with aluminum hydroxide and pigment into fine particles, and simultaneously, the interface is hydrophobic, and the compatibility with polypropylene is improved.
Preferably, the polypropylene in the step (3) is one of EPC30R-H, K1008 and K1712 which is made by medium petrochemical industry and has better fluidity and rigidity.
Preferably, 1250-mesh marble powder is selected as the marble powder in the step (3).
Preferably, the compatilizer in the step (3) is plasticized maleic anhydride grafted polypropylene provided by Shenzhen Pasteh New Material science and technology Co. Has obvious effect of increasing the compatibility of the wood powder and the polypropylene.
Preferably, the terpene resin in step (3) has good adhesiveness, and promotes the adhesion of wood powder to each other and to polypropylene during thermal processing, so that the obtained wood-like composite plastic is compact.
Preferably, the lubricant in the step (3) is one of microcrystalline wax, butyl stearate and liquid paraffin; the lubricating agent can effectively increase the extrusion processing lubricity, prevent the thermal degradation of the wood-like material and improve the appearance luster of the product.
Preferably, the antioxidant in the step (3) is one of an antioxidant 1010, an antioxidant 168 and an antioxidant DSTP.
Preferably, in the step (3), the ultraviolet absorbent is at least one selected from commercially available ultraviolet absorbents UV-P, UV-O, UV-9, UV-531 and UV-RMB.
Preferably, the twin-screw extruder in the step (3) is a co-rotating twin-screw extruder with the screw length-diameter ratio L/D of 35-40, the temperature of the twin-screw extruder is controlled at 190 ℃ and the rotation speed of the screw is controlled at 150 rpm.
Furthermore, the invention provides the wood-like composite plastic special for furniture, which is prepared by the method. Generally, a toner (color masterbatch) is added into a wood-plastic material, and the pigment is more dispersed in polymer plastics and has poor binding property with wood components, so that the obtained wood-like product has a color attached to the surface of the wood powder, the wood-like effect is poor, and pigment removal is easy. In order to obtain the special wood-like composite plastic for furniture with stable color, durability and good wood-like effect, the wood-like effect is improved by coloring the wood material in advance, and the wood-like color is stable; specifically, the nano ceramic pigment is dispersed in a saturated aluminum sulfate solution, and the aluminum sulfate and the nano ceramic pigment are soaked in micropores of wood powder by soaking the wood powder; the principle that the aluminum sulfate is changed into the solidified aluminum hydroxide by using the alkali liquor is utilized, so that the aluminum sulfate adsorbed by the wood powder is changed into the aluminum hydroxide and solidified, and the aluminum hydroxide is fixed in the wood powder, so that the rigidity of the wood powder is increased, the compactness is better, and the characteristics of the wood powder are closer to those of solid wood; moreover, the nano ceramic pigment is fixed on the wood powder, so that the powder falling of the pigment is effectively prevented, and particularly, the pigment and the wood powder are tightly combined, so that floating materials cannot appear in products, and the wood-like feeling is strong. Conventionally, in the wood-like material with high wood powder usage amount, the obtained wood-like product is loose, and the wood-like product prepared from the obtained wood-like composite plastic has high compactness and is closer to solid wood feeling through the pretreatment of the wood powder.
The special wood-like composite plastic for furniture and the preparation method thereof have the remarkable characteristics and technical advantages that:
(1) according to the invention, the wood-like effect is improved and the wood-like color is stable by coloring the wood material in advance.
(2) The invention utilizes the principle that alkali liquor changes aluminum sulfate into solidified aluminum hydroxide, changes aluminum sulfate adsorbed by wood powder into aluminum hydroxide and solidifies the aluminum hydroxide, and the aluminum hydroxide is fixed in the wood powder, so that the rigidity of the wood powder is increased, the compactness is better, and the wood powder is closer to the characteristics of solid wood.
(3) The nano ceramic pigment is fixed on the wood powder, so that the powder falling of the pigment is effectively prevented, particularly, the pigment is tightly combined with the wood powder, floating materials cannot appear in a product, the wood-like feeling is strong, and the nano ceramic pigment is bright in color and cannot be aged and faded in high-temperature processing and use.
(4) The invention takes the use requirements of market customers as guidance, fully integrates and coordinates the raw material matching, reasonably utilizes the waste wood powder material, and the obtained wood-like composite plastic can be directly extruded to prepare wood-like plates, can also be directly extruded to form various profiles, can also be directly extruded to form furniture panels and the like, is convenient to use, and is a better choice for furniture manufacturers to produce.
Drawings
The beneficial effects of the invention are further explained in the following with the attached drawings:
FIG. 1 shows a furniture board made of wood-like composite plastic by extrusion molding, which is specially used for furniture, obtained in example 1 of the present invention. The surface has uniform color and luster and good luster.
Detailed Description
The following examples are intended to further illustrate the present invention, but not to limit the scope of the claims of the present invention.
Example 1
(1) Dispersing 5kg of nano yellow bismuth vanadate ceramic pigment and 0.1kg of glycerin monostearate serving as a dispersing agent in 50kg of saturated aluminum sulfate solution, and grinding for 15min at the rotating speed of 50rpm by using a ball mill to disperse the nano yellow bismuth vanadate ceramic pigment in the saturated aluminum sulfate solution to form slurry; adding excessive slurry into wood powder which is subjected to pre-refining treatment and is compounded by straw powder and rice hull powder according to the mass ratio of 3:1, slowly stirring and soaking for 1h, filtering redundant slurry by using a 300-mesh filter screen, adding the obtained wood powder for adsorbing aluminum sulfate and pigment into a stirrer, spraying sodium hydroxide solution while stirring, wherein the mass concentration of the sodium hydroxide solution is 10%, the adding amount is 15% of the mass of the wood powder for adsorbing aluminum sulfate and pigment, stirring and reacting for 30min, and changing aluminum sulfate into aluminum hydroxide and curing; then washing with water for 3 times, press-filtering, and drying at 70 deg.C to obtain wood powder preloaded with aluminum hydroxide and pigment;
(2) adding the pre-loaded aluminum hydroxide obtained in the step (1), 100kg of pigment wood powder, 3kg of polyethylene wax and 1kg of stearic acid amide into a mixer, stirring at a high speed of 1000rpm for 20min, and disaggregating the pre-loaded aluminum hydroxide and the pigment wood powder into fine particles through high-speed stirring, wherein the interface is hydrophobic, and the compatibility with polypropylene is improved to obtain a modified material;
(3) adding 45kg of the modified material obtained in the step (2), 30R-H40kg of polypropylene EPC, 5kg of a compatilizer (easy-to-mold maleic anhydride grafted polypropylene provided by Shenzhen Pasteh New Material science and technology Co., Ltd.), 10kg of 1250-mesh marble powder, 0.5kg of terpene resin, 3kg of lubricant microcrystalline wax, 10100.1 kg of an antioxidant and 0.02kg of an ultraviolet absorbent UV-O into a mixer, mixing for 45min at 100 ℃, uniformly mixing, and then sending into a double-screw extruder to melt, mix, extrude and granulate, wherein the double-screw extruder adopts a co-rotating double-screw extruder with the length-diameter ratio L/D of a screw rod of 35, the temperature of the extruder is controlled at 190 ℃ of 160 plus materials, and the rotation speed of the screw rod is 120 r/min, so as to obtain the wood-.
The wood-like composite plastic obtained by the scheme of the embodiment 1 is added into a conical screw section extruder, the temperature is controlled at 190-200 ℃, and the shutter section is directly extruded to be used for furniture wardrobe plate door stops. The extrusion process is stable, the pigment is uniform, the powder is not removed, the surface is bright, the solid wood imitating effect is obvious, and the extruded sample is shown in the attached figure 1.
Example 2
(1) Dispersing 5kg of nano yellow bismuth vanadate ceramic pigment and 0.2kg of glycerin monostearate serving as a dispersing agent in 50kg of saturated aluminum sulfate solution, and grinding for 15min at the rotating speed of 50rpm by using a ball mill to disperse the nano yellow bismuth vanadate ceramic pigment in the saturated aluminum sulfate solution to form slurry; adding excessive slurry into pre-refined composite wood powder with the grain diameter of less than 50 microns and prepared by straw powder and rice hull powder according to the mass ratio of 3:1, slowly stirring and soaking for 2 hours, filtering off redundant slurry by using a 300-mesh filter screen, adding the obtained wood powder adsorbing aluminum sulfate and pigment into a stirrer, spraying sodium hydroxide solution while stirring, wherein the liquid level of the sodium hydroxide solution is 20% of the mass concentration of the sodium hydroxide solution, stirring and reacting for 35min, and changing aluminum sulfate into aluminum hydroxide and curing; then washing with water for 3 times, press-filtering, and drying at 70 deg.C to obtain wood powder preloaded with aluminum hydroxide and pigment;
(2) adding the pre-loaded aluminum hydroxide obtained in the step (1), 100kg of pigment wood powder, 2kg of polyethylene wax and 2kg of stearic acid amide into a mixer, stirring at a high speed of 1200rpm for 20min, and disaggregating the pre-loaded aluminum hydroxide and the pigment wood powder into fine particles through high-speed stirring, wherein the interface is hydrophobic, and the compatibility with polypropylene is improved to obtain a modified material;
(3) adding 45kg of the modified material obtained in the step (2), 30R-H40kg of polypropylene EPC, 5kg of a compatilizer (easy-to-mold maleic anhydride grafted polypropylene provided by Shenzhen Pasteh New Material science and technology Co., Ltd.), 15kg of 1250-mesh marble powder, 1kg of terpene resin, 3kg of liquid paraffin, 0.2kg of antioxidant DSTP and 90.05 kg of ultraviolet absorbent UV into a mixer, mixing for 45min at 100 ℃, uniformly mixing, and then sending into a double-screw extruder for melting, mixing, extruding and granulating, wherein the double-screw extruder adopts a homodromous double-screw extruder with the length-diameter ratio L/D of a screw rod of 35, the temperature of the extruder is controlled at 190 ℃ of 160-.
Example 3
(1) Dispersing 3kg of nano teak red ceramic pigment and 0.1kg of glycerin monostearate serving as a dispersing agent in 40kg of saturated aluminum sulfate solution, and grinding for 15min at the rotating speed of 50rpm by using a ball mill to disperse the nano teak red ceramic pigment in the saturated aluminum sulfate solution to form slurry; adding excessive slurry into pre-refined composite wood powder with the grain diameter of less than 50 microns and prepared by straw powder and rice hull powder according to the mass ratio of 3:1, slowly stirring and soaking for 3 hours, filtering off redundant slurry by using a 300-mesh filter screen, adding the obtained wood powder adsorbing aluminum sulfate and pigment into a stirrer, spraying sodium hydroxide solution while stirring, wherein the liquid level of the sodium hydroxide solution is 20% of the mass concentration of the sodium hydroxide solution, stirring and reacting for 35min, and changing aluminum sulfate into aluminum hydroxide and curing; then washing with water for 3 times, press-filtering, and drying at 80 deg.C to obtain wood powder preloaded with aluminum hydroxide and pigment;
(2) adding the pre-loaded aluminum hydroxide obtained in the step (1), 100kg of pigment wood powder, 1-3kg of polyethylene wax and 1-2kg of stearic acid amide into a mixer, stirring at a high speed of 1000-1200rpm for 15-20min, and disaggregating the pre-loaded aluminum hydroxide and the pigment wood powder into fine particles by high-speed stirring, wherein the interface is hydrophobic, and the compatibility with polypropylene is improved to obtain a modified material;
(3) adding 45kg of the modified material obtained in the step (2), 15kg of polypropylene K171230 kg, 5kg of a compatilizer (easily-moldable maleic anhydride grafted polypropylene provided by Shenzhen Pasteur new material science and technology Co., Ltd.), 1250-mesh marble powder, 0.5kg of terpene resin, 3kg of lubricant microcrystalline wax, 10100.2 kg of an antioxidant and UV-90.03 kg of an ultraviolet absorbent into a mixer, mixing for 45min at 80 ℃, uniformly mixing, then feeding into a double-screw extruder, melting, mixing, extruding and granulating, wherein the double-screw extruder adopts a co-rotating double-screw extruder with the length-diameter ratio L/D of a screw being 35, the temperature of the extruder is controlled at 190 ℃ of 160 plus materials, and the rotation speed of the screw is 150 revolutions per minute, so as to obtain the wood-like composite plastic special for furniture.
Comparative example 1
(1) Dispersing 5kg of nano yellow bismuth vanadate ceramic pigment and 0.1kg of glycerin monostearate serving as a dispersing agent in 50kg of saturated aluminum sulfate solution, and grinding for 15min at the rotating speed of 50rpm by using a ball mill to disperse the nano yellow bismuth vanadate ceramic pigment in the saturated aluminum sulfate solution to form slurry; adding excessive slurry into wood powder which is subjected to pre-refining treatment and is compounded by straw powder and rice hull powder in a mass ratio of 3:1, slowly stirring and soaking for 1h, filtering redundant slurry by using a 300-mesh filter screen, adding the obtained wood powder for adsorbing aluminum sulfate and pigment into a stirrer, washing for 3 times, performing filter pressing, and drying at 70 ℃ to obtain wood powder preloaded with pigment;
(2) adding 100kg of the wood powder preloaded with the pigment obtained in the step (1), 3kg of polyethylene wax and 1kg of stearic acid amide into a mixer, stirring at a high speed of 1000rpm for 20min, and performing high-speed stirring to break the wood powder preloaded with the pigment into fine particles, wherein the interface is hydrophobic, and the compatibility with polypropylene is improved to obtain a modified material;
(3) adding 45kg of the modified material obtained in the step (2), 30R-H40kg of polypropylene EPC, 5kg of a compatilizer (easy-to-mold maleic anhydride grafted polypropylene provided by Shenzhen Pasteh New Material science and technology Co., Ltd.), 10kg of 1250-mesh marble powder, 0.5kg of terpene resin, 3kg of lubricant microcrystalline wax, 10100.1 kg of an antioxidant and 0.02kg of an ultraviolet absorbent UV-O into a mixer, mixing for 45min at 100 ℃, uniformly mixing, and then sending into a double-screw extruder to melt, mix, extrude and granulate, wherein the double-screw extruder adopts a co-rotating double-screw extruder with the length-diameter ratio L/D of a screw rod of 35, the temperature of the extruder is controlled at 190 ℃ of 160 plus materials, and the rotation speed of the screw rod is 120 r/min, so as to obtain the wood-.
Comparative example 1 after the wood powder adsorbs aluminum sulfate and pigments, the wood powder is not treated with sodium hydroxide to form cured aluminum hydroxide, and the wood powder has poor rigidity and compactness because the wood powder does not have cured aluminum hydroxide; the fixation to the pigment is poor, the combination of the pigment and the wood powder is poor when the wood-like product is prepared by extrusion, and the wood-like effect is influenced.
Comparative example 2
(1) Dispersing 5kg of nano yellow bismuth vanadate ceramic pigment and 0.1kg of glycerin monostearate serving as a dispersing agent in 50kg of saturated aluminum sulfate solution, and grinding for 15min at the rotating speed of 50rpm by using a ball mill to disperse the nano yellow bismuth vanadate ceramic pigment in the saturated aluminum sulfate solution to form slurry; adding excessive slurry into wood powder which is subjected to pre-refining treatment and is compounded by straw powder and rice hull powder according to the mass ratio of 3:1, slowly stirring and soaking for 1h, filtering redundant slurry by using a 300-mesh filter screen, adding the obtained wood powder for adsorbing aluminum sulfate and pigment into a stirrer, spraying sodium hydroxide solution while stirring, wherein the mass concentration of the sodium hydroxide solution is 10%, the adding amount is 15% of the mass of the wood powder for adsorbing aluminum sulfate and pigment, stirring and reacting for 30min, and changing aluminum sulfate into aluminum hydroxide and curing; then washing with water for 3 times, press-filtering, and drying at 70 deg.C to obtain wood powder preloaded with aluminum hydroxide and pigment;
(2) adding the pre-loaded aluminum hydroxide obtained in the step (1), 45kg of wood powder of pigment, 30R-H40kg of polypropylene EPC, 5kg of compatilizer (easily-moldable maleic anhydride grafted polypropylene provided by Shenzhen Pasteur new material science and technology Co., Ltd.), 10kg of 1250-mesh marble powder, 0.5kg of terpene resin, 3kg of lubricant microcrystalline wax, 10100.1 kg of antioxidant and UV-O0.02kg of ultraviolet absorbent into a mixer, mixing for 45min at 100 ℃, uniformly mixing, then sending into a double-screw extruder for melting, mixing, extruding and granulating, wherein the double-screw extruder adopts a co-rotating extruder with the length-diameter ratio L/D of a screw rod of 35, the temperature of the extruder is controlled at 190 ℃ and the rotation speed of the screw rod is 120 r/min, and the special wood-like composite plastic for furniture is obtained.
Comparative example 2 no deagglomeration treatment of wood powder preloaded with aluminum hydroxide and pigment, large wood powder particles, poor dispersibility, rough surface when extrusion was carried out to prepare wood-like products, and affected wood-like effect.
Extrusion wood-like article testing:
the wood-like composite plastic particles obtained in examples 1-3 and comparative examples 1-2 were added to a conical screw profile extruder, the temperature was controlled at 190 ℃ and 200 ℃ to directly extrude a louver profile, and the color uniformity, powder removal and surface brightness of the product were observed as shown in Table 1.
The wood-like composite plastic particles obtained in examples 1-3 and comparative examples 1-2 were subjected to injection molding at 200 ℃ to make a sample, and cut into test specimens of 80mm × 10mm × 4mm, referring to the standard test notched izod impact strength of GB/T1843-2008-.
The density of the extruded samples was tested with reference to GB/T1463 test methods for Density and relative Density for fiber reinforced plastics, as shown in Table 1.
Table 1:
through the tests, the wood-like effect is improved by coloring the wood material in advance, and the wood-like effect is expressed in that the wood-like color is stable, no powder is removed, the compactness is good, and the wood-like effect is closer to the characteristics of solid wood.
The technical means disclosed by the scheme of the invention are not limited to the technical means disclosed by the technical means, and the technical scheme also comprises the technical scheme formed by any combination of the technical characteristics. While the foregoing is directed to embodiments of the present invention, it will be appreciated by those skilled in the art that various changes in form and detail may be made therein without departing from the principles of the invention.
Claims (9)
1. A preparation method of the wood-like composite plastic special for furniture is characterized by comprising the following steps:
(1) dispersing the nano ceramic pigment and the dispersant in a saturated aluminum sulfate solution, and grinding the mixture by a ball mill to prepare slurry; adding the refined wood powder into the slurry, slowly stirring and soaking for 1-3h, then filtering out redundant slurry, adding the obtained wood powder adsorbing aluminum sulfate and pigment into a stirrer, spraying sodium hydroxide solution while stirring, and changing the aluminum sulfate into aluminum hydroxide and curing; then washing with water, filter-pressing, and drying at 70-80 ℃ to obtain wood powder preloaded with aluminum hydroxide and pigment;
(2) adding the pre-loaded aluminum hydroxide and the wood powder of the pigment obtained in the step (1), polyethylene wax and stearic acid amide into a mixer for high-speed dispersion, so that the pre-loaded aluminum hydroxide and the wood powder of the pigment are disaggregated and subjected to surface modification to obtain a modified material;
(3) adding 40-45 parts by weight of the modified material obtained in the step (2), 30-40 parts by weight of polypropylene, 3-5 parts by weight of compatilizer, 10-15 parts by weight of marble powder, 0.5-1 part by weight of terpene resin, 3-5 parts by weight of lubricant, 0.1-0.2 part by weight of antioxidant and 0.02-0.05 part by weight of ultraviolet absorbent into a mixer, uniformly mixing, and then feeding into a double-screw extruder for melting, mixing, extruding and granulating to obtain the wood-like composite plastic special for furniture.
2. The preparation method of the wood-like composite plastic special for furniture according to claim 1, characterized by comprising the following steps: the nano ceramic pigment, the dispersing agent and the saturated aluminum sulfate solution in the step (1) are prepared according to the following weight parts: 3-5 parts of nano ceramic pigment, 0.1-0.2 part of dispersant and 30-50 parts of saturated aluminum sulfate solution.
3. The preparation method of the wood-like composite plastic special for furniture according to claim 1, characterized by comprising the following steps: the nano ceramic pigment in the step (1) is teak red ceramic pigment or yellow bismuth vanadate ceramic pigment obtained by sintering; the dispersant is glyceryl monostearate.
4. The preparation method of the wood-like composite plastic special for furniture according to claim 1, characterized by comprising the following steps: in the step (1), the ball mill grinds for 10-15min at the rotating speed of 50 rpm.
5. The preparation method of the wood-like composite plastic special for furniture according to claim 1, characterized by comprising the following steps: the refined wood powder in the step (1) is wood powder which is subjected to refining treatment in advance and has a particle size of less than 50 mu m; the sodium hydroxide solution is 10% by mass, and the addition amount of the sodium hydroxide solution is 15-20% of the mass of the wood powder adsorbing aluminum sulfate and pigment.
6. The preparation method of the wood-like composite plastic special for furniture according to claim 1, characterized by comprising the following steps: the wood powder preloaded with the aluminum hydroxide and the pigment in the step (2) comprises 100 parts by weight of polyethylene wax 1-3 parts by weight and stearic acid amide 1-2 parts by weight; the high-speed stirring speed of the mixer is 1000 and 1200 rpm; stirring and dispersing for 15-20 min.
7. The preparation method of the wood-like composite plastic special for furniture according to claim 1, characterized by comprising the following steps: selecting 1250-mesh marble powder as the marble powder in the step (3); the compatilizer is prepared from easily-moldable maleic anhydride grafted polypropylene provided by Shenzhen Pasteur new material science and technology Limited; the lubricant is one of microcrystalline wax, butyl stearate and liquid paraffin; the antioxidant is one of an antioxidant 1010, an antioxidant 168 and an antioxidant DSTP; the ultraviolet absorbent is at least one of commercially available ultraviolet absorbent UV-P, ultraviolet absorbent UV-O, ultraviolet absorbent UV-9, ultraviolet absorbent UV-531 and ultraviolet absorbent UV-RMB.
8. The preparation method of the wood-like composite plastic special for furniture according to claim 1, characterized by comprising the following steps: in the step (3), the double-screw extruder is a co-rotating double-screw extruder with the length-diameter ratio L/D of the screw being 35-40, the temperature of the double-screw extruder is controlled at 190 ℃ and the rotation speed of the screw is controlled at 150 rpm and 120 ℃.
9. A special wood-like composite plastic for furniture, which is prepared by the method of any one of claims 1 to 8.
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| CN202010669603.6A CN111607160B (en) | 2020-07-13 | 2020-07-13 | Special wood-like composite plastic for furniture and preparation method thereof |
| PCT/CN2021/083731 WO2022012086A1 (en) | 2020-07-13 | 2021-03-30 | Wood-like composite plastic specifically used for furniture and preparation method therefor |
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| WO2022012086A1 (en) * | 2020-07-13 | 2022-01-20 | 杨曦 | Wood-like composite plastic specifically used for furniture and preparation method therefor |
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| CN104592616A (en) * | 2015-02-05 | 2015-05-06 | 湖州新远见木塑科技有限公司 | Wood-grain-like co-extrusion wood-plastic material and preparation method thereof |
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| KR20100123667A (en) * | 2010-11-03 | 2010-11-24 | 김창영 | Woodplasticcomposite with mixed rice husks,ceramicmicrospheres |
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| CN106366492A (en) * | 2016-08-27 | 2017-02-01 | 苏州雅晟建筑装饰工程有限公司 | Colorful wood-plastic composite and preparation method thereof |
| CN111607160B (en) * | 2020-07-13 | 2021-08-31 | 浙江森川家具有限公司 | Special wood-like composite plastic for furniture and preparation method thereof |
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| CN103087413A (en) * | 2013-01-31 | 2013-05-08 | 张振伟 | New imitation wood material and manufacturing method thereof |
| JP2014172197A (en) * | 2013-03-06 | 2014-09-22 | Toppan Cosmo Inc | Heat-insulating decorative sheet having a wood grain pattern |
| CN104151850A (en) * | 2014-08-07 | 2014-11-19 | 黄山华塑新材料科技有限公司 | Imitation natural wood grain wood-plastic section and preparation method thereof |
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Effective date of registration: 20210811 Address after: 318014 No.399, Binsheng Road, Sanjia street, Taizhou Bay New District, Taizhou City, Zhejiang Province Applicant after: ZHEJIANG SENCHUAN FURNITURE Co.,Ltd. Address before: 318050 Room 202, building 14, yin'an community, Lubei street, Luqiao District, Taizhou City, Zhejiang Province Applicant before: Yang Xi |
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Denomination of invention: Wood like composite plastic for furniture and its preparation method Effective date of registration: 20221226 Granted publication date: 20210831 Pledgee: Agricultural Bank of China Limited Taizhou Economic Development Zone sub branch Pledgor: ZHEJIANG SENCHUAN FURNITURE Co.,Ltd. Registration number: Y2022330003708 |
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