CN103113677B - Halogen-free flame-retardant anti-mildew composite and preparation method thereof - Google Patents
Halogen-free flame-retardant anti-mildew composite and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a halogen-free flame-retardant anti-mildew composite which is prepared by jointly melting and mixing the following raw materials in parts by weight: 100 parts of polypropylene and polyvinyl chloride, 40-50 parts of bamboo fiber powder, 5-6 parts of camphor wood powder, 5-6 parts of compatibilizer, 5-6 parts of flexibilizer, 30-40 parts of flame retardant and synergist, 4-6 parts of heat stabilizer, 4-6 parts of lubricant, 4-5 parts of oxygen inhibitor, and 0-1 parts of antioxidant by three times, and finally extruding and forming. The bamboo-plastic composite has excellent mechanical performance and flame retardance and anti-mildew properties.
Description
One, technical field
The present invention relates to a kind of bamboo-plastic composite material and preparation method thereof, specifically a kind of Halogen-free flame-retardant anti-mildew composite and preparation method thereof.
Two, background technology
Wood plastic composite (wood/plastic composite, be called for short " WPC ") utilizes various discarded vegetable fibre and reclaiming plastics by compound, blended, modified technique technology and a kind of emerging circumstance friendly composite material that manufactures.Current WPC is mainly used in the door and window, top board, template, floor, roof boarding, dividing plate etc. of building field.The raw material of wood-plastic products comprises: various waste or used plastics (plastic wrapping, milk bag, waste or used plastics goods, TV shell etc.) and wood powder (rice husk, stalk etc. of the scrap stock of wood working, sawdust, wood powder, crop).Not only hardness is high for wood plastic product, easy coloring, easily processing, wear-resisting, water-absorbent is little, have the plurality of advantages such as similar wood appearance, and effectively can solve " white pollution " problem that world forest resources lacks day by day and a large amount of waste or used plastics causes environment, good in mould Dai Mu, to mould for steel Novel environment-friendlymaterial material, there is good market application foreground.Research shows: wood plastic composite in the market of North America from 2003 to 2010 years with double-digit speed increment, material of construction accounts for 80% of North America wood plastic composite aggregate demand; In West Europe, vehicle material has accounted for the over half of wood plastic composite demand, separately has material of construction to account for the market of 30%; In Japan, the application of wood plastic composite in floor, wall and furniture etc. is also day by day popularized; In China, wood plastic composite has been widely used in packaging, transport, municipal administration, shipping vehicle, indoor door and window, floor, furniture, and outdoor building finishing material etc.
But meet naked light or easy firing is the critical defect of WPC when heating, this is because xylon and Plastic Resin are (in general-purpose plastics except PVC, polyethylene, polypropylene, ABS etc.) be inflammable material, direct application, particularly indoor, there is the potential safety hazard of easy initiation fire.Thus WPC is the requirement being difficult to reach code for fire prevention design of interior decoration of buildings without fire-retardant finish, does not allow as relevant constructional ornamental material in principle and directly uses.
The fire retardant mechanism of WPC relates to that xylon is fire-retardant, the problem such as plastic flame and the synergy of the two.At present, the method for respectively xylon, plastic substrate being carried out to fire-retardant finish is generally adopted for the technical study of wood plastic composite fire-retardant finish both at home and abroad.In traditional polymer flame-retarded technology, a kind of method of comparative maturity adopts halogen flame (particularly bromine system) and antimonous oxide (Sb
2o
3) compatibility, be commonly called as " halogen-antimony collaboration system ".But studies have reported that, the split product of bromo phenyl ether (PBDPO) contains dioxin violent in toxicity, and the smog that combustion processes produces is very large, and the personnel that very easily cause suffocate.Nowadays, European Union has prohibited use halogen containing flame-retardant.The fire retardant mechanism of conventional halogen-free flame-retardant system (as aluminium hydroxide, magnesium hydroxide etc.) decomposes when being heated to produce water, absorb heat and reach fire-retardant object, this based flame retardant can meet the requirement of environmental-protection flame-retardant, but amount of filler comparatively large (usually needing to reach about 40%), cause the mixing and shaping mobility of WPC to be deteriorated, affect Drawing abillity and physical and mechanical property.Adopt organo montmorillonite (OMMT) although carry out flame-retardant modifiedly also having report to wood plastic composite, but the consistency at present between polynite and resin matrix is difficult to there is substantial improvement, the fire-retardant index of OMMT modified composite material of woods and plastics is still difficult to by LOI and vertical combustion level estimate.
The flame-retardant wood-plastic composite material prepared based on the Intumescent Retardant System of ammonium polyphosphate (APP) is (as " flame-retardant wood-plastic composite material and preparation method thereof ", publication number CN1837278A), adopt APP as fire retardant main body, be charcoal source with tetramethylolmethane (PER) or starch, matrix material has possessed good flame retardant resistance, but APP add-on is comparatively large, and affects the mechanical property of flame retardant resistance wood plastic composite; Meanwhile, APP price is more expensive, also makes production cost improve.Similar also has, and publication number is the Chinese patent of CN101469082A, reports a kind of water-soluble phosphorous and nitrogenous flame ratardant, and for fire-retardant cellulose material, but fire retardant addition is large, have impact on goods physical and mechanical property, and flame retarding efficiency is more limited.Publication number is the Chinese patent of CN101812237A, adds the ammonium phosphate type fire retardant based on ammonium hydrogen phosphate, primary ammonium phosphate in recycled plastic, but also fails fundamentally to solve the problem.Chinese patent (application number: 200710173607.X) adopts ammonium polyphosphate or poly phosphate as fire retardant, first with after dissolution with solvents fire retardant, wood fibre is soaked, then halogen-free flame-retardant wood-plastic composite material is prepared, and it still uses expansion type flame retardant, and the step adding wood fibre process makes its practicality have a greatly reduced quality.Studies have reported that, Mierocrystalline cellulose contained in vegetable fibre, hemicellulose are polyol (similar with interpolation PER), thus react with APP under the high temperature conditions, serve as the effect of carbon source, thus without the need to adding " carbon forming agent " again.
Wood plastic composite, owing to being filled with a large amount of vegetable fibres, although by plastic overmold, still can providing good living environment for fungi, cause wood plastic composite to go mouldy, rot under certain wet condition, thus reduction of service life.In addition, go mouldy and surface of wood-plastic composite material can be made to produce macroscopic mould spot, affect that it is attractive in appearance, this can be very limited when WPC uses as outdoor goods.Guangdong Dimei Biological Technology Co., Ltd. Chen Juan etc. discloses " a kind of special weatherproof moldproof functional master batch for wood/plastic composite material and preparation method thereof " (publication number: CN102181090A), its composition comprises polyethylene, ZnO, N-trichloro-methylthio phthalimide, 4,5-bis-chloro-N-octyl group-3-isothiazolinone etc.Disclosed " a kind of long-acting mould-proof wood plastic composite material and preparation method thereof " (publication number: CN101767362A) of South China Normal University, its mildewproof additive is nano TiO 2, the nano-ZnO of surface modification or its composition, multilayer wood-plastic matrix material is produced by coextrusion technology, preparation technology's more complicated, makes production cost improve.Consider that the main body of wood plastic composite is vegetable fibre, the anti-mould and anti-moth characteristic of natural camphorwood powder can be utilized, not only can reduce costs, and more environmental protection.
The wood plastic composite of current report, its preparation technology is based on extrusion moulding, compression molding, and for the production of plate, sheet material based article, because WPC has added a large amount of wood powder, add a large amount of fire retardant and other processing aid again, system mobility can be caused to be deteriorated, thus to have influence on products appearance and use properties thereof.
In recent years, the flame retardant resistance modification of wood plastic composite is more and more subject to concern and the attention of people.How to use fire retardant to improve the flame retardant properties of polymer matrix composite, and suppress to produce flue gas and toxic gas when burning or the cracking of matrix material, become the key issue of new material research development and application.
Three, summary of the invention
The present invention is poor in order to solve existing halogen-free flame-retardant wood plastic composite anti-mildew, and fire retardant APP addition ambassador production cost improves and causes the problem of Material Physics mechanical properties decrease, thus provide a kind of Anti-mildew halogen-free flame-retardant smoke-suppression bamboo-plastic composite material and preparation method thereof.
A kind of Halogen-free flame-retardant anti-mildew composite, is made up of each component of following mass fraction:
Polypropylene and polyvinyl chloride: 100 mass parts
Bamboo fibers powder: 40-50 mass parts
Camphorwood powder: 5-6 mass parts
Expanding material: 5-6 mass parts
Toughner: 5-6 mass parts
Fire retardant and synergist: 30-40 mass parts
Thermo-stabilizer: 4-6 mass parts
Lubricant: 4-6 mass parts
Oxygen inhibiting agent: 4-5 mass parts;
Oxidation inhibitor: 0-1 mass parts.
The polypropylene (PP) reclaimed and polyvinyl chloride (PVC) all can use.To the PP reclaimed, require that melt flow rate (MFR) (MFR) is not less than 0--3.The blending ratio of PP and PVC meets 1:1 ~ 1:3(mass ratio).
Described bamboo fibers powder median size 40-80 order; Described camphorwood powder, median size 60-100 order.
Described expanding material is made up of main expanding material and auxiliary expanding material, wherein main expanding material is ethylene-vinyl acetate-vinyl chloride graft copolymer (EVA-g-PVC), and auxiliary expanding material is selected from the mixture of one or more that grafting comes in horse acid anhydrides polypropylene (MAH-g-PP), maleic anhydride stem grafting polyolefin elastomerics (MAH-g-POE), glycidyl methacrylate graft polypropylene (GMA-g-PP), ethylene-acrylic acid copolymer (EAA), ethylene-vinyl acetate copolymer (EVA).The mass ratio of main expanding material and auxiliary expanding material meets 1:2 ~ 3:1.When auxiliary expanding material is two or more mixing, mutual ratio is any.
Described toughner is selected from the mixture of one or more in styrene-butadiene-styrene block copolymer (SBS), ethylene-propylene rubber(EPR) (EPR), paracril (NBR), terpolymer EP rubber (EPDM), cis-1,4-polybutadiene rubber (BR), natural rubber (NR), styrene-butadiene rubber(SBR) (SBR), Thermoplastic Elastomer, Olefinic (POE), chlorinatedpolyethylene (CPE), ethylene-acrylic acid copolymer (EAA), ethylene-vinyl acetate copolymer (EVA).When selecting two or more mixing, mutual ratio is any.
Described fire retardant is ammonium polyphosphate (APP, the polymerization degree 1000 ~ 4000); Described fire retarding synergist comprises organic and inorganic two classes, and organic synergist is selected from the mixture of one or more in tetramethylolmethane, trimeric cyanamide, resol, epoxy resin; Inorganic synergist is selected from the mixture of one or more in magnesium hydroxide, aluminium hydroxide, zinc borate, polynite (nano level), zeolite, organic and inorganic synergist can be used in combination, blending ratio is any, and the mass ratio of described fire retardant and fire retarding synergist meets 1:2 ~ 4:1.Wherein trimeric cyanamide, magnesium hydroxide, aluminium hydroxide have the effect of smoke suppressant concurrently; Zinc borate has mildew-proof function concurrently.
Described thermo-stabilizer is Ca-Zn composite heat stabilizer, and its effect plays heat stabilization to blending resin polyvinyl chloride (PVC) component.
Described oxidation inhibitor is selected from the mixture of one or more in antioxidant 1010, irgasfos 168, oxidation inhibitor 301 or oxidation inhibitor DSTP; When selecting two or more mixing, mutual ratio is any.
Described oxygen inhibiting agent is selected from trolamine, two carboxyphenyl propylamine, methyldiethanolamine, sodium bicarbonate etc.
Described lubricant is selected from the mixture of one or more in stearic acid, calcium stearate, Zinic stearas, whiteruss, ethylene chloride wax, ethylene oxide wax, ethylene bis stearamide.When selecting two or more mixing, mutual ratio is any.
The preparation method of above-mentioned Halogen-free flame-retardant anti-mildew composite, comprise bamboo fibers powder, the drying of camphorwood powder, flame-retardant modified granulation, blended granulation and extrusion moulding, described drying is by bamboo fibers powder, camphorwood powder is dried to water ratio≤2%, difference with the prior art is: described flame-retardant modified granulation is by the polypropylene of proportional quantity, polyvinyl chloride (PVC) RESINS, main expanding material, toughner, thermo-stabilizer, oxidation inhibitor, partial lubrication agent, fire retardant and synergist add in high-speed mixer, be uniformly mixed at 110-120 DEG C, obtain compound, through parallel equidirectional two-screw tablets press in 190-200 DEG C of extruding pelletization, obtain flame-retardant modified pellet, described blended granulation the bamboo fibers powder of above-mentioned flame-retardant modified pellet, proportional quantity, camphorwood powder, the mixing of auxiliary expanding material, surplus lubricant and oxygen inhibiting agent is added in high-speed mixer to be uniformly mixed at 110-120 DEG C to obtain secondary mixed material, and in dual-screw pelletizer, under 170-195 ° of C, melt blending, extruding pelletization obtain blended pellet, described extrusion moulding is that blended pellet is obtained this bamboo-plastic composite material goods through twin screw extruder in 150-195 DEG C of extrusion moulding.By the shape of the shaping equipment determination goods of head.
Concrete operation step is as follows:
(1) first by bamboo fibers powder (40 ~ 80 order), camphorwood powder (60 ~ 100 order) vacuum drying 4 ~ 7 hours under 100 ~ 120 ° of C, make the water ratio of vegetable fibre lower than 2%;
(2) polypropylene of proportional quantity, polyvinyl chloride (PVC) RESINS, main expanding material, toughner, thermo-stabilizer, oxidation inhibitor, part proportional quantity lubricant, fire retardant and synergist are added in high-speed mixer, under temperature 110-120 ° of C, rotating speed 600 ~ 700r/min condition, mixing 10 ~ 15min, above-mentioned compound is joined in parallel equidirectional two-screw tablets press and carries out melt blending, extruding pelletization, temperature is 190 ~ 200 ° of C, screw speed 80 ~ 120r/min, obtains flame-retardant modified pellet (this is a melting mixing process);
(3) oxygen inhibiting agent etc. of the bamboo fibers powder of above-mentioned flame-retardant modified pellet and proportional quantity and camphorwood powder, auxiliary expanding material, surplus proportional quantity lubricant and proportional quantity is added high-speed mixer (mixing condition: temperature 110 ~ 120 ° of C, rotating speed 700 ~ 800r/min), mixing time 15 ~ 25min obtains secondary mixed material; Secondary mixed material is joined wood and mould melt blending in special twin screw tablets press, extruding pelletization (processing condition: temperature 170 ~ 195 ° of C, screw speed 180 ~ 200r/min), obtain blended pellet (this is second melting mixing process);
(4) blended pellet is added wood to mould in special twin screw forcing machine and carry out third time melt blending extrusion moulding (extrusion temperature 150 ~ 190 ° of C, screw speed 10 ~ 40r/min), namely obtain Halogen-free flame-retardant anti-mildew composite goods by extruder head, cooling and shaping device.(this is three melting mixing processes);
Present method adopts twin screw " three step scorifications ", effectively can improve different mixture resin and the interface adhesion between fluoropolymer resin and vegetable fibre and consistency, thus improves the mechanical property of matrix material, flame retardant properties and anti-mildew performance.Simultaneously, the application adopts Ethlene vinylacetate vinylchloride graft copolymer (EVA-g-PVC) as main expanding material, effectively can not only improve polyvinyl chloride, consistency between acrylic resin and vegetable fibre, weathering resistance and the impelling strength of matrix material can be improved simultaneously.
Be that fire retardant main body prepares compared with wood plastic composite with ammonium polyphosphate with existing, flame retardant type bamboo-plastic composite material of the present invention utilizes the flame retardancy of PVC, and reduce APP consumption, first PP flame retardant effect is improved by " three step scorifications ", next improves the consistency between each component of composite system, thus effectively improves the flame retardant effect of this matrix material; And reduce the usage quantity of main ammonium polyphosphate flame retardant.This bamboo-plastic composite material is compared with existing wood plastic composite, and have flame retardant properties good, amount of smoke is little.Owing to the addition of camphorwood powder on raw material composition, utilize the fire-retardant mildew-resistant synergy of zinc borate to make gained bamboo-plastic composite material have good Natural anti-mildew and become effect.Preparation technology of the present invention is relatively simple, and is applicable to suitability for industrialized production.
Four, embodiment
Further illustrate the present invention below in conjunction with embodiment, scope of the present invention is not by the restriction of these embodiments.
Embodiment 1:
Feed composition is according to the mass fraction:
Reclaim polypropylene: 50 mass parts
Waste polyvinyl chloride: 50 mass parts
Bamboo powder (80 order): 45 mass parts
Camphorwood powder (60 order): 5 mass parts
EVA-g-PVC:2 mass parts
MAH-g-PP:3 mass parts
CPE:5 mass parts
Ammonium polyphosphate (polymerization degree 2000): 20 mass parts
Trimeric cyanamide: 5 mass parts
Magnesium hydroxide: 10 mass parts
Zinc borate: 3 mass parts
Ethylene oxide wax: 3 mass parts
Calcium stearate: 1 mass parts
Zinic stearas: 1 mass parts
Sodium bicarbonate: 5 mass parts
Calcium zinc heat stabilizer: 4.5 mass parts
Antioxidant 1010: 0.5 mass parts
Irgasfos 168: 0.5 mass parts
Preparation method is as follows:
(1) first by bamboo powder, camphorwood powder vacuum drying 6 hours under 100 ~ 120 ° of C, make the water ratio of fir powder and camphorwood powder all lower than 2%;
(2) by polypropylene, polyvinyl chloride (PVC) RESINS, main expanding material EVA-g-PVC, toughening agent C PE, thermo-stabilizer, antioxidant 1010, 168, lubricant oxidation ethylene waxes, ammonium polyphosphate flame retardant and synergist trimeric cyanamide, magnesium hydroxide, zinc borates etc. add in high-speed mixer, at temperature 110-120 ° of C, under rotating speed 600 ~ 700r/min condition, mixing 10 ~ 15min, above-mentioned compound is added in parallel equidirectional two-screw tablets press and carries out melt blending, extruding pelletization, temperature is 190 ~ 200 ° of C, screw speed 80 ~ 120r/min, obtain flame-retardant modified pellet,
(3) above-mentioned flame-retardant modified pellet is added high-speed mixer (mixing condition: temperature 110 ~ 120 ° of C with through the bamboo fibers powder of drying treatment and camphorwood powder, auxiliary expanding material MAH-g-PP, lubricant stearic acid calcium, Zinic stearas and oxygen inhibiting agent sodium bicarbonate, rotating speed 700 ~ 800r/min), mixing time 15 ~ 25min obtains secondary mixed material; Secondary mixed material is joined wood and mould granulation in special twin screw tablets press (processing condition: temperature 170 ~ 195 ° of C, screw speed 180 ~ 200r/min), obtain blended pellet; Above-mentioned blended pellet is added wood to mould in special twin screw forcing machine and carry out melt extruding (extrusion temperature 150 ~ 190 ° of C, screw speed 10 ~ 40r/min), namely obtain Halogen-free flame-retardant anti-mildew composite goods by extruder head, shaping equipment.
The Halogen-free flame-retardant anti-mildew composite that this implementation method prepares adopts mechanical property, fungicidal properties and flame retardant properties to detect.Mechanics properties testing result is as shown in table 1, and fungicidal properties detected result is as shown in table 2, and flame retardant properties detected result is as shown in table 3.As can be seen from the data results in table 1, table 2 and table 3, the Halogen-free flame-retardant anti-mildew composite mechanical property that this implementation method obtains is good, and has good flame-retardant smoke inhibition and mildew-resistant characteristic.
Embodiment 2:
Feed composition is according to the mass fraction:
Reclaim polypropylene: 50 mass parts
Waste polyvinyl chloride: 50 mass parts
Bamboo powder (80 order): 45 mass parts
Camphorwood powder (60 order): 5 mass parts
EVA-g-PVC:2.5 mass parts
MAH-g-PP:3 mass parts
EPDM:5 mass parts
Ammonium polyphosphate (polymerization degree 4000): 20 mass parts
Resol: 5 mass parts
Aluminium hydroxide: 10 mass parts
Zinc borate: 3 mass parts
Chlorinatedpolyethylene wax: 3 mass parts
EBS:2 mass parts
Two carboxyphenyl propylamine: 5 mass parts
Calcium zinc heat stabilizer: 5 mass parts
Antioxidant 1010: 0.6 mass parts
Oxidation inhibitor DSTP:0.4 mass parts
According to preparation technology described in embodiment 1, obtain Halogen-free flame-retardant anti-mildew composite goods through extrusion moulding.
The Halogen-free flame-retardant anti-mildew composite that this implementation method prepares adopts mechanical property, fungicidal properties and flame retardant properties to detect.Mechanics properties testing result is as shown in table 1, and fungicidal properties detected result is as shown in table 2, and flame retardant properties detected result is as shown in table 3.As can be seen from the data results in table 1, table 2 and table 3, the Halogen-free flame-retardant anti-mildew composite mechanical property that this implementation method obtains is good, and has good flame-retardant smoke inhibition and mildew-resistant characteristic.
Embodiment 3:
Feed composition is according to the mass fraction:
Reclaim polypropylene: 50 mass parts
Waste polyvinyl chloride: 50 mass parts
Bamboo powder (80 order): 45 mass parts
Camphorwood powder (60 order): 5 mass parts
EVA-g-PVC:2 mass parts
MAH-g-PP:3 mass parts
POE:5 mass parts
Ammonium polyphosphate (polymerization degree 4000): 20 mass parts
Epoxy resin: 5 mass parts
Zinc borate: 3 mass parts
Polynite (nano level): 10 mass parts
Stearic acid: 2.5 mass parts
Zinic stearas: 2.5 mass parts
Methyldiethanolamine: 5 mass parts
Calcium zinc heat stabilizer: 5 mass parts
Antioxidant 1010: 0.6 mass parts
Oxidation inhibitor 301:0.4 mass parts
According to preparation technology described in embodiment 1, obtain Halogen-free flame-retardant anti-mildew composite goods through extrusion moulding.
The Halogen-free flame-retardant anti-mildew composite that this implementation method prepares adopts mechanical property, fungicidal properties and flame retardant properties to detect.Mechanics properties testing result is as shown in table 1, and fungicidal properties detected result is as shown in table 2, and flame retardant properties detected result is as shown in table 3.As can be seen from the data results in table 1, table 2 and table 3, the Halogen-free flame-retardant anti-mildew composite mechanical property that this implementation method obtains is good, and has good flame-retardant smoke inhibition and mildew-resistant characteristic.
Table 1 mechanical property table
Remarks: mechanical property is with reference to QB/T4161-2011; Flexural strength, bending elastic modulus are according to GB/T9341-2000 standard testing; Shock strength is according to GB/T1043.1-2008 standard testing.
Table 2 fungicidal properties table
Remarks: mildew-resistant grade evaluation standard A STM G21-09:0-without mildew; 1-mildew area is less than 10%; 2-mould-growth coverage rate is 10 ~ 30%; 3-mould-growth coverage rate is 30 ~ 60%; 4-mould-growth wide coverage is in 60%.
Table 3 flame retardant properties table
Remarks: combustionproperty measures according to GB8624-2006 standard testing.
Claims (1)
1. a preparation method for Halogen-free flame-retardant anti-mildew composite, comprises bamboo fibers powder, the drying of camphorwood powder, flame-retardant modified granulation, blended granulation and extrusion moulding, it is characterized in that:
Preparation method is as follows:
(1) first by 45 parts, 80 order bamboo powder, 60 order camphorwood powder 5 parts vacuum drying 6 hours at 100 ~ 120 DEG C, make the water ratio of bamboo powder and camphorwood powder all lower than 2%;
(2) polypropylene 50 parts will be reclaimed, waste polyvinyl chloride 50 parts, main expanding material EVA-g-PVC2.5 part, toughner EPDM5 part, calcium zinc heat stabilizer 5 parts, antioxidant 1010 0.6 part, DSTP0.4 part, 3 parts, lubricant chlorinatedpolyethylene wax, the fire retardant polymerization degree 4000 ammonium polyphosphate 20 parts and 5 parts, synergist resol, 10 parts, aluminium hydroxide, zinc borate 3 parts adds in high-speed mixer, temperature 110 ~ 120 DEG C, under rotating speed 600 ~ 700r/min condition, mixing 10 ~ 15min, above-mentioned compound is added in parallel equidirectional two-screw tablets press and carries out melt blending, extruding pelletization, temperature is 190 ~ 200 DEG C, screw speed 80 ~ 120r/min, obtain flame-retardant modified pellet,
(3) above-mentioned flame-retardant modified pellet is added high-speed mixer with through the bamboo powder of drying treatment and camphorwood powder, auxiliary expanding material MAH-g-PP3 part, Lubricate EBS 2 parts, oxygen inhibiting agent two carboxyphenyl propylamine 5 parts, in temperature 110 ~ 120 DEG C, mix 15 ~ 25min under rotating speed 700 ~ 800r/min condition and obtain secondary mixed material, secondary mixed material is joined wood and mould granulation in special twin screw grain-making machine, processing condition: temperature 170 ~ 195 DEG C, screw speed 180 ~ 200r/min, obtains blended pellet; Above-mentioned blended pellet is added wood to mould in special twin screw forcing machine and melt extrude, extrusion temperature 150 ~ 190 DEG C, screw speed 10 ~ 40r/min, namely obtains Halogen-free flame-retardant anti-mildew composite goods by extruder head, shaping equipment; Described part is mass parts.
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| CN101698749B (en) * | 2009-11-03 | 2011-10-26 | 北京林业大学 | Wood-plastic composite material and prepration method thereof |
| CN102617915B (en) * | 2012-04-01 | 2014-08-06 | 安徽国风木塑科技有限公司 | Anti-mildew halogen-free flame-retardant smoke-suppression wood-plastic composite material and preparation method thereof |
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