CN103665902A - Preparation method of waste paint slag compatibilized wood-plastic composite material - Google Patents
Preparation method of waste paint slag compatibilized wood-plastic composite material Download PDFInfo
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- CN103665902A CN103665902A CN201310537955.6A CN201310537955A CN103665902A CN 103665902 A CN103665902 A CN 103665902A CN 201310537955 A CN201310537955 A CN 201310537955A CN 103665902 A CN103665902 A CN 103665902A
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Abstract
The invention relates to a preparation method of a waste paint slag compatibilized wood-plastic composite material, which comprises the following steps: mixing waste paint slag with thermoplastic resin and wood flour, compounding, and performing die pressing or extrusion to produce the wood-plastic composite material, wherein the paint slag is mainly composed of film forming matter, pigment, solvent and additive; the film former component in the paint slag contains multiple active functional groups such as hydroxyl groups, carboxyl groups, ester groups, amido groups and the like, and can be bonded with active groups on the surfaces of the wood flour and resin, such as hydroxyl groups, carboxyl groups, ester groups or the like; alkyl plastic chain segments in the film former or plasticizer in the paint slag are attached to soft chain segments of the resin, thereby increasing the interface bonding force and compatibility between the wood flour and the resin and improving the mechanical property of the wood-plastic composite material; and the pigment in the paint slag is used instead of master batches and added into the wood-plastic composite material, so that the decoration effect of a wood-plastic product is enhanced, and the production cost is lowered. Thus, the problems that waste paint slag pollutes environment and the waste paint slag treatment cost of an automobile manufacturer is high are effectively solved, and the unification of environmental benefits, social benefits and economic benefits is realized.
Description
Technical field
The present invention relates to wood plastic composite preparation and paint slag recycling field, specifically by coating lacquer slag, mold pressing or extrusion moulding after plant powder and thermoplastic resin mix, prepare wood plastic composite or goods, Application Areas relates to Dicoration base material, construction and decoration, finishing material, park, court, the outdoor tables and chairs that the occasions such as street are used, stool, Picnic table, wrapping material, the numerous areas such as furniture, waste paint slag is that a large amount of over-sprayed paint fogs and the organic solvent gas that automobile (or workpiece) produces in spraying process adds flocculation agent after recirculated water absorbs, after waste gas and over-sprayed paint fog are fully contacted with recirculated water, the waste that adds again slag former to form.
background technology
Wood plastic composite is a kind of with wood powder, xylon or vegetable fibre filling thermoplastic polymer composite material, has the advantage of timber and plastics concurrently.Its main raw material is agriculture and forestry organic waste material (as waste wood, crop stalk etc.) and thermoplastics.The Application and Development of this material is beneficial to and protects forest resources, and slows down the pollution to environment of waste wood and plastics, makes full use of the natural resources.
Wood plastic composite (WPC) is by thermoplastics and xylon or vegetable fibre is compound is prepared from, this material has the dual nature of timber and plastics concurrently, material homogeneous, hot retractility, water-absorbent are all little than timber, good stability of the dimension, wear resistance and shock resistance are high, and without defects such as timber knot, twills; The processibility also with thermoplastics, extrudes, the technique such as mold pressing, injection moulding all can be used to moulding, and equipment attrition is little; Easy to process, can saw, plane and bonding or be connected and fixed with nail, bolt; Do not need to utilize poisonous chemical substance to process, not containing formaldehyde; The outward appearance that has timber, the hardness higher than plastics; Reusable and recycling after discarded, is conducive to the plurality of advantages such as environmental protection.But from xylon molecular structure, fiber surface has a large amount of polar groups, cause vegetable fibre different from resin matrix surface property, in wood plastic composite preparation process, between wetting ability xylon and hydrophobic polymer, depositing larger interfacial energy poor, both compound tense bonding interface effects are poor, thereby cause the reduction of matrix material properties, affected the popularization and application of this matrix material.And xylon surface exists a large amount of oh groups and easily forms hydrogen bond and cause assembling, thereby xylon can not be uniformly dispersed in polymkeric substance, and the coacervate of these xylons easily causes stress concentration under the effect of external force, the physical and mechanical property of goods is significantly declined, have influence on its widespread use.Thereby at present wood plastic composite Research Challenges is: strong polarity vegetable fibre evenly mixes with nonpolar thermoplastics, the content of raising vegetable fibre in matrix material and the problem such as reduce production costs.Therefore, improving homogeneity and the interface compatibility that this compound system mixes is the key of preparing wood plastic composite.
Waste paint slag is that a large amount of over-sprayed paint fogs and the organic solvent gas that automobile (or workpiece) produces in spraying process adds flocculation agent after recirculated water absorbs, and after waste gas and over-sprayed paint fog are fully contacted with recirculated water, then adds slag former to form.In 08 edition Hazardous Waste List > > of < < country, waste paint slag belongs to HW12 class dyestuff coating waste.
At present, the paint that most domestic automobile factory adopts is the amido alkyd paint that adds butanols, dimethylbenzene equal solvent to mix by different ratios by aminoresin and Synolac, in spraying operation process, effective coating efficiency of paint is lower, generally, when Bian operates with normal air spray gun, its coating efficiency only has 20%-40%, and adopt its coating efficiency of electrostatic spraying in 60% left and right, generally speaking, in spraying operation, only have the paint spay-coating of small part on workpiece, remaining most of coating all splashes in paint spray booth.The main chemical compositions of paint slag is close with the paint composition using, and according to the parts of spraying are unusual, by being coated with membrane substance, pigment, solvent and a small amount of scum silica frost medicament, forms.Wherein be coated with membrane substance and be generally synthetic resinoid, mainly contain Synolac, acrylic resin, epoxy resin, vibrin and aminoresin etc.; Pigment and scum silica frost medicament kind are various, and each producer selectes according to actual Production requirement, are difficult to define; Solvent be generally boiling point at 250 ° the aliphatic hydrocarbon below C, aromatic hydrocarbon (benzene class), alcohol ethers, ester class, ketone etc. and water (water-miscible paint); In addition auxiliary agent (additive) be widely used the complicacy that has increased waste paint slag composition, the disposal difficulty of waste paint slag is increased.This type of refuse viscosity is strong, easily trickling, and in environment, degradation time is very long, and toxicity is large, as direct landfill and burning, can cause severe contamination to environment, and environmental protection disposal costs is very high, to automobile production, has increased heavy economical load.Therefore, if after waste paint slag is reclaimed for the preparation of wood plastic composite, can solve preferably the handling problems of waste paint slag.
Traditional waste paint slag is disposed the same with other trade waste, the mode of all utilizing landfill and directly burning, but utilize these two kinds of methods all can cause secondary pollution to environment: landfill can cause the pollution of underground water and soil, directly burn and can cause topsoil owing to producing a large amount of black smokes.In the legislations of environmental protection of country, having stipulated can not landfill, and directly burns elementary as a comparison disposal options, also being substituted gradually, and the treatment technology of waste paint slag mainly contains paint slag regeneration techniques, paints slag pyrolytic incineration technology etc. at present.
paint slag regeneration techniques.
The patent No. is the regeneration techniques that 200710131206.8 patent of invention discloses a kind of useless coating.Useless coating, after pre-treatment, stirring filtering, is processed into operable coating by discarded coating after adding solvent, anti-settling agent, mill base, dewatering agent again, reduces waste and the impact of useless coating on environment of resource.
The evaporation that the patent of invention Bian of application number 200710146302. X combines by physical method and chemical process.After the waste painting slag that makes to contain a large amount of hydrates fully dewaters, then pass through a series of processes, reach and can, for spraying the specification of quality of production, again become qualified painting.
The patent No. is that the patent of invention of 200610068764. X discloses a kind of paint slag regenerating process, the method by organic solvent mix with paint slag, homogenous disperse, underpressure distillation, pulverizing filter, adjust viscosity, the packing of product, make paint slag be regenerated as qualified paint.
Paint slag regeneration techniques has higher purity and active requirement to original waste paint slag, need to after generation, in the short period of time, process and can be used in coating material, therefore regeneration techniques generally all requires with fresh waste paint slag, and existing waste paint slag impurity is many, often be mingled with as impurity such as gloves, cloth, nuts, the overwhelming majority paints slags and has deposited for some time, is difficult to reach the requirement of regeneration techniques; Paint slag regeneration techniques need to add a large amount of chemical reagent as organic solvent, degreaser, water-removal agent, pigment etc., and partial regeneration technology also needs the complicated operations such as rectifying, and complex process, needs extra additive types more; The paint slag of the equal corresponding particular type of each paint slag regeneration techniques, and existing waste paint slag kind is numerous and diverse, existing any paint slag regeneration techniques cannot be realized the paint slag of all types is regenerated; Paint in addition regenerated paint that slag regeneration techniques obtains general be oil paint, and be meet the requirement of environmental protection in automobile (or workpiece) spraying process, now advocate energetically and use water-borne coatings, so the popularization of regenerated paint and use will be subject to larger limitation.
paint slag pyrolytic incineration technology.
Application number 201110304911. X inventions provide a kind for the treatment of process of micro-negative pressure pyrolysis waste paint slag; its step is put into after micro-negative reaction still dehydration, taste removal after cleaning, then waste paint slag is put into shredder grinds to form qualified waste paint slag particle and reclaim stand-by.Paint slag pyrolytic incineration technology is applicable to the waste paint slag of water ratio below 30%, and existing waste paint slag water ratio is all very high (between 70%-85%, the highest can be up to 90%), be not suitable for adopting this technology to dispose, this technology also rests on laboratory stage at present in addition.
utilize the direct incineration technology of cement kiln.
Utilize cement kiln disposal of commercial waste, domestic refuse, poisonous and harmful solid waste to have its unique advantage.Because dry-process cement rotary kiln volume is large, high temperature, Heat stability is good, as offal treatment, neither increase land seizure, investment is less, alternative part of fuel again, but because the water ratio of original waste paint slag is higher, when directly carrying out incineration disposal, the ununiformity of high-moisture percentage and charging can have a strong impact on the stability of cement kiln operating mode, and especially along with the increase of disposal amount, this impact is also more serious, unstable due to kiln condition, causes burning disposal amount not high in addition.
The patent No. is that 200710014844. 1 patent of invention discloses a kind of paper waste pond mud that utilizes for the method for fuel, it is main raw material that the method be take the pond mud that paper mill effluent process to produce, by pond mud dehydrate, NaOH solution soaking, pulverizing, baking make a kind of fuel that can replace bituminous coal, add coal slime and make tamanori and can prepare shaped fuel.
The patent No. is that the patent of invention of 92103704. X discloses a kind of method of utilizing the briquettes with sludge of biochemical sludge making, the excess sludge of the method Shi Jiang municipal sewage plant is after drying bed dehydration, making its water ratio is 40%-50%, then mix with raw coal, loess in proportion, add again carbide slag, the agent that eliminates the unusual smell, after fully mixing, makes moulded coal by the method for existing production of shaped coal.
About paint slag for comprehensive, utilize technology more above, but relate to utilize waste paint slag for the preparation of the relevant report of manufacturing wood plastic composite so far there are no report.
Summary of the invention
The present invention relates to a kind of preparation method of waste paint slag increase-volume wood plastic composite, the object of the invention is to solve comprehensive utilization and the wood plastic composite increase-volume problem of paint slag, be by the waste paint slag producing in the vehicles or household electrical appliance instrument painting process collect, press filtration dewaters, sorting impurity, be divided into piece, dry after abrasive dust, by weight ratio 15-50 parts of wood powders, 20-80 parts of thermoplastic resins, 10-40 parts of slags of paint, lubricant 5-15 part, expanding material 5-15 part are mixed to production paint slag increase-volume wood plastic composite.
The capable comprehensive utilization of compatilizer, coupling agent and Masterbatch composition during the present invention is prepared waste paint slag as wood plastic composite, paint slag is mainly comprised of filmogen, pigment, solvent and additive.Filmogen is the main body composition of paint, and its effect is to make pigment keep bright state, makes it firm durable and can stick to body surface, is the material that determines paint type.Generally by natural resin (as rosin), artificial resin (as maleficent acid resin), the synthetic resin (as esters of acrylic acid, vinyl acetate class, polyester, epoxy resin, polyurethane, polystyrene, polyvinyl chloride etc.) of siccative oil or semi-drying oil modification, made.Conventionally by adding softening agent and catalyzer, adjust, improve its weather resistance, sticking power, corrosion, wear resistance and toughness.Membrane-forming agent component in paint slag contains the various active functional groups such as hydroxyl, carboxyl, ester group, amide group, can adhere to wood powder and resin surface group bonding, can increase consistency and the interface binding power of wood powder and interlaminar resin, improve the mechanical property of wood plastic composite.Pigment is one of another kind of nonvolatile substances in paint, it gives finish paint color and weather resistance, make paint there is opacifying power simultaneously, and improve intensity and sticking power, change gloss, join in wood plastic composite, can substitute Masterbatch increases the decorative effect of wood plastic product, reduce production costs, improved the competitive power of product in market, simultaneously effectively solve waste paint slag contaminate environment and the automobile production producer problem high to this disposal costs, effectively waste paint slag is fully utilized, realized the unification of environmental benefit, Social benefit and economic benefit.
The present invention relates to a kind of preparation method of waste paint slag increase-volume wood plastic composite, the waste paint slag process producing in the vehicles such as automobile or household electrical appliance instrument painting process is collected, press filtration dewaters, sorting impurity, cut into piece, dry after abrasive dust, by weight ratio by 15-50 parts of wood powders, 20-80 parts of thermoplastic resins, 10-30 parts of paint slags, lubricant 1-15 part, the mixing of expanding material 5-15 part makes Preblend, Preblend is placed in to mixing roll and in 155-200 ° of C, mixes plasticizing 5-10 minute, then take out broken, hot-forming in 160-210 ° of C through vulcanizing press, make paint slag increase-volume wood plastic composite, or Preblend is put into twin screw extruder extruding pelletization or moulding production wood plastic composite.
A preparation method for waste paint slag increase-volume wood plastic composite, carries out in accordance with the following steps:
(1) the paint slag of collection is carried out to press filtration and dewater, sorting is removed after impurity, at 40-120 degree, carries out vacuum-drying; (2) paint slag is divided into bulk is placed on ball mill ball milling or mechanical disintegration becomes 20-200 order powder; (3) by weight ratio 15-50 parts of wood powders, 20-80 parts of thermoplastic resins, 10-20 parts of slags of paint, lubricant 5-15 part, expanding material 5-15 part are put into large-scale stirrer for mixing and is stirred into Preblend; (4) by said mixture with conveying belt deliver to mixing in Banbury mixer or mill after, then compression molding or Preblend is directly inputted into extruding pelletization or extrusion moulding in extrusion machine after pulverizing.
2, the preparation method of waste paint slag wood plastic composite according to claim 1, paint cinder ladle described in it is characterized in that is drawn together the paint slag producing on the vehicles, household electrical appliances, instrument, furniture and mechanical means painting line, and its main component comprises filmogen, pigment, solvent and additive etc.; Filmogen is the main body composition of paint, the general natural resin (as rosin) by siccative oil or semi-drying oil modification, artificial resin (as maleficent acid resin), synthetic resin (as esters of acrylic acid, vinyl acetate class, polyester, epoxy resin, polyurethane, polystyrene, polyvinyl chloride etc.) etc.
3, the preparation method of waste paint slag wood plastic composite according to claim 1, is characterized in that described wood powder comprises cellulose base plant powder or its blends such as trees powder, agricultural crop straw powder, cereal chaff skin, shell.
4, the preparation method of waste paint slag wood plastic composite according to claim 1, is characterized in that described resin comprises resin or the multipolymer of above-mentioned several resin monomers or the blend of above-mentioned several resins or the mixtures such as polyethylene, polypropylene, polyvinyl chloride, polystyrene, polycarbonate, ABS.
5, the preparation method of waste paint slag wood plastic composite according to claim 1, is characterized in that described paint slag is for being processed into 20-200 object powder, and consumption is 10-40 parts.
6, the preparation method of waste paint slag wood plastic composite according to claim 1, is characterized in that described wood powder or straw powder are for being processed into 20-200 object powder, and consumption is 15-50 part.
7, the preparation method of waste paint slag wood plastic composite according to claim 4, is characterized in that described resin can be various thermoplastic resin raw materials described in it, the scrap stock that produce in injection moulding, mold pressing or extrusion molding and the reclaimed materials after product abandonment.
The preparation method of 8 waste paint slag wood plastic composites according to claim 1, is characterized in that described lubricant is stearic acid and stearate (potassium sodium calcium zinc lead etc.), and consumption is 2-10 part.
Beneficial effect of the present invention is fairly obvious, when reducing the industry waste residue processing costs problems of spraying paint such as automobile, membrane-forming agent in membrane-forming agent component in waste paint slag is with hydroxyl, ester group, carboxyl, amide group isoreactivity functional group and film forming alkyl segment can better bonding and adhesions with the surface group of wood powder and resin in mixing and extrusion, increased the interface compatibility of wood plastic composite, improved the mechanical property of wood plastic composite, utilize the pigment of paint slag to replace the Masterbatch in wood plastic composite preparation simultaneously, reduced the production cost of wood plastic composite, increased the decorative effect of wood plastic product, list can solve waste paint slag contaminate environment and the automobile production producer problem high to this disposal costs effectively, and when making obtained wood plastic composite color various, have good mechanical property concurrently, chemical property and high thermal resistance, flame retardant resistance and weather resistance, and production cost is reduced, life-span is long, improved the competitive power of product in market, realized environmental benefit, the unification of Social benefit and economic benefit, promote recycling economy development.
Embodiment
Waste paint slag increase-volume wood plastic composite preparation technology flow process is as shown in Figure 1:
Fig. 1 paint slag increase-volume wood plastic composite preparation technology flow process
Below in conjunction with specific embodiment, further illustrate the present invention.These embodiment are only not used in and limit the scope of the invention for the present invention is described.The experimental technique of unreceipted actual conditions in the following example, conventionally according to normal condition, or the condition of advising according to manufacturer.Ratio and per-cent are based on weight, unless stated otherwise.
embodiment 1 polyethylene paint slag Wood plastic boards extrusion moulding.
With pulverizer or ball mill, xylon or paint slag are worn into respectively to fineness at the fine sprills of 40-60 order, then with vacuum drying oven, it is dried to (making its moisture control below 1.0%), wood fiber powder after drying is got to 10Kg to be added in high mixer, add again 10 Kg waste polyethylene plastics and 2 Kg paint slag, 0.5Kg lubricant (calcium stearate: 0.2Kg, Zinic stearas: 0.2Kg, polyethylene wax: 0.1Kg), self-control acrylate expanding material 1 Kg, carry out high-speed mixing and put into twin screw extruder extrusion moulding after 30 minutes.
The technological temperature of forcing machine is controlled as follows:
Engine speed: 8.0-20.0r/min, feeding rotating speed: 16.0-40.0r/min, pressure-controlling is 12.5-20.0Mpa, machine barrel 1st district: 190-180 ° of C, machine barrel 2nd district: 180-170 ° of C, machine barrel 3rd district: 170-160 ° of C, machine barrel 4th district: 160-155 ° of C, merging core: 170-160V, each district's temperature of mould is controlled between 170-160 ° of C.
embodiment 2 polyethylene/polypropylene paint slag Wood plastic boards extrusion mouldings.
With pulverizer or ball mill, powdered rice hulls or paint slag are worn into respectively to fineness at the fine sprills of 20-40 order, then with vacuum drying oven, it is dried to (making its moisture control below 1.0%), powdered rice hulls after drying is got to 10Kg to be added in high mixer, add again 5 Kg waste polypropylene plastics, 10 Kg waste polypropylene plastics and 2 Kg paint slag, 0.5Kg lubricant (calcium stearate: 0.2Kg, Zinic stearas: 0.2Kg, polyethylene wax: 0.1Kg), self-control acrylate expanding material 2Kg, carry out high-speed mixing and become Preblend after 30 minutes, put it into extrusion moulding in twin screw extruder.
The technological temperature of forcing machine is controlled as follows:
Engine speed: 8.0-20.0r/min, feeding rotating speed: 16.0-40.0r/min, pressure-controlling is 12.5-20.0Mpa, machine barrel 1st district: 200-190 ° of C, machine barrel 2nd district: 190-180 ° of C, machine barrel 3rd district: 180-170 ° of C, machine barrel 4th district: 170-165 ° of C, merging core: 170-160V, each district's temperature of mould is controlled between 170-160 ° of C.
embodiment 3: polycarbonate/polyacrylonitrile-divinyl-polystyrene (PC-ABS) paint slag wood is moulded extrusion moulding.
With pulverizer or ball mill, corn stalk powder or paint slag are worn into respectively to fineness at the fine sprills of 20-40 order, then with vacuum drying oven, it is dried to (making its moisture control below 1.0%), corn stalk powder 10Kg after drying is added in high mixer, add again the waste and old PC-ABS plastic of 5 Kg, 10 Kg waste polyethylene plastics and 2 Kg paint slag, 0.5Kg lubricant (calcium stearate: 0.2Kg, Zinic stearas: 0.2Kg, polyethylene wax: 0.1Kg), self-control acrylate expanding material 2Kg, carry out high-speed mixing and become Preblend after 30 minutes, put it into extrusion moulding in twin screw extruder.
The technological temperature of forcing machine is controlled as follows:
Engine speed: 8.0-20.0r/min, feeding rotating speed: 16.0-40.0r/min, pressure-controlling is 12.5-20.0Mpa, machine barrel 1st district: 210-200 ° of C, machine barrel 2nd district: 200-190 ° of C, machine barrel 3rd district: 190-180 ° of C, machine barrel 4th district: 180-175 ° of C, merging core: 170-160V, each district's temperature of mould is controlled between 180-170 ° of C.
the mixing pellet preparation of embodiment 4 polyethylene/polypropylene paint slag wood plastic composite.
With pulverizer or ball mill, bagasse powder and paint slag are worn into respectively to fineness at the fine sprills of 20-40 order, then with vacuum drying oven, it is dried to (making its moisture control below 1.0%), bagasse powder 10Kg after drying is added in high mixer, add again 8 Kg recycle polyethylene plastics, 6 Kg reclaim acrylic plastering and 3Kg paint slag, 0.8Kg lubricant (calcium stearate: 0.3Kg, Magnesium Stearate: 0.3Kg, polyethylene wax: 0.1Kg), self-control acrylate expanding material 2 Kg, carry out high-speed mixing and after 30 minutes, put into Banbury mixer mixing (190 ℃) 300 s, cooling, after pulverizing with pulverizer, use vulcanizing press sample preparation, at 190 ℃, precompressed 10 min under 20 MPa, hot pressing 5 min, then the cooling 3 min demouldings under 20 MPa, with universal sampling machine, make moulding.The print of making is placed to 24 h, by GB/T1043-93 rigid plastics charpy impact test method test shock strength, by GB/T1040-92 plastic tensile method for testing performance test tensile strength.
embodiment 5 PC-ABS paint slag wood plastic composite compression molding material preparations.
With pulverizer or ball mill, rice straw powder and paint slag are worn into respectively to fineness at the fine sprills of 60-80 order, then with vacuum drying oven, it is dried to (making its moisture control below 1.0%), rice straw powder 15Kg after drying is added in high mixer, add again 15Kg to reclaim PC-ABS resin (polycarbonate and acrylonitrile-butadiene-styrene copolymer and mixture), 3Kg maleic anhydride grafted polyethylene, 2Kg paints slag, 2Kg lubricant (calcium stearate: 0.8Kg, stearic acid: 0.8Kg, polyethylene wax: 0.4Kg), self-control acrylate expanding material 2Kg, carrying out high-speed mixing, after 30 minutes, to put into Banbury mixer mixing (200 ℃) cooling after 10 minutes, after pulverizing granulation with pulverizer, use vulcanizing press sample preparation (16 cm * 16 cm), at 200 ℃, precompressed 10 min under 20 MPa, hot pressing 5 min, then the cooling 3 min demouldings under 20 MPa, with universal sampling machine, make moulding, the print of making is placed to 24 h, press GB/T1043-93 rigid plastics charpy impact test method test shock strength, press GB/T1040-92 plastic tensile method for testing performance test tensile strength.
Claims (8)
1. the present invention relates to a kind of preparation method of waste paint slag increase-volume wood plastic composite, the waste paint slag process producing in the vehicles such as automobile or household electrical appliance instrument painting process is collected, press filtration dewaters, sorting impurity, cut into piece, dry after abrasive dust, by weight ratio by 15-50 parts of wood powders, 20-80 parts of thermoplastic resins, 10-30 parts of paint slags, lubricant 1-15 part, the mixing of expanding material 5-15 part makes Preblend, Preblend is placed in to mixing roll and in 155 200 ° of C, mixes plasticizing 5 10 minutes, then take out broken, hot-forming in 160-210 ° of C through vulcanizing press, make paint slag increase-volume wood plastic composite, or Preblend is put into twin screw extruder extruding pelletization or moulding production wood plastic composite, the preparation method of this waste paint slag increase-volume wood plastic composite, carry out in accordance with the following steps:
(1) the paint slag of collection is carried out to press filtration and dewater, sorting is removed after impurity, at 40-120 degree, carries out vacuum-drying; (2) paint slag is divided into bulk is placed on ball mill ball milling or mechanical disintegration becomes 20-200 order powder; (3) by weight ratio 15-50 parts of wood powders, 20-80 parts of thermoplastic resins, 10-20 parts of slags of paint, lubricant 5-15 part, expanding material 5-15 part are put into large-scale stirrer for mixing and is stirred into Preblend; (4) by said mixture with conveying belt deliver to mixing in Banbury mixer or mill after, then compression molding or Preblend is directly inputted into extruding pelletization or extrusion moulding in extrusion machine after pulverizing.
2. the preparation method of waste paint slag wood plastic composite according to claim 1, paint cinder ladle described in it is characterized in that is drawn together the paint slag producing on the vehicles, household electrical appliances, instrument, furniture and mechanical means painting line, and its main component comprises filmogen, pigment, solvent and additive etc.; Filmogen is the main body composition of paint, the general natural resin (as rosin) by siccative oil or semi-drying oil modification, artificial resin (as maleficent acid resin), synthetic resin (as esters of acrylic acid, vinyl acetate class, polyester, epoxy resin, polyurethane, polystyrene, polyvinyl chloride etc.) etc.
3. the preparation method of waste paint slag wood plastic composite according to claim 1, is characterized in that described wood powder comprises cellulose base plant powder or its blends such as trees powder, agricultural crop straw powder, cereal chaff skin, shell.
4. the preparation method of waste paint slag wood plastic composite according to claim 1, is characterized in that described resin comprises resin or the multipolymer of above-mentioned several resin monomers or the blend of above-mentioned several resins or the mixtures such as polyethylene, polypropylene, polyvinyl chloride, polystyrene, polycarbonate, ABS.
5. the preparation method of waste paint slag wood plastic composite according to claim 1, is characterized in that described paint slag is for being processed into 20-200 object powder, and consumption is 10-40 parts.
6. the preparation method of waste paint slag wood plastic composite according to claim 1, is characterized in that described wood powder or straw powder are for being processed into 20-200 object powder, and consumption is 15-50 part.
7. the preparation method of waste paint slag wood plastic composite according to claim 4, is characterized in that described resin can be various thermoplastic resin raw materials described in it, the scrap stock that produce in injection moulding, mold pressing or extrusion molding and the reclaimed materials after product abandonment.
8. the preparation method of waste paint slag wood plastic composite according to claim 1, is characterized in that described lubricant is stearic acid and stearate (potassium, sodium, calcium, zinc or lead salt etc.), and consumption is 2-10 part.
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| CN108587019A (en) * | 2018-04-10 | 2018-09-28 | 山东建筑大学 | A kind of plastic master batch, preparation method and plastic products being made from it that paint slag is modified |
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| CN110105522A (en) * | 2019-05-31 | 2019-08-09 | 山东理工大学 | The preparation method of waste paint slag polyurethane foamed material |
| CN110804263A (en) * | 2019-12-04 | 2020-02-18 | 泰安乐邦环保科技有限公司 | PVC building template prepared from coating waste residues and preparation method thereof |
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| CN110092882B (en) * | 2019-05-31 | 2021-06-22 | 山东理工大学 | Method for preparing flame-retardant polyurethane foam material based on waste paint residues |
| CN110804263A (en) * | 2019-12-04 | 2020-02-18 | 泰安乐邦环保科技有限公司 | PVC building template prepared from coating waste residues and preparation method thereof |
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