CN109385109A - A kind of wood plastic composite with flame retarding function - Google Patents
A kind of wood plastic composite with flame retarding function Download PDFInfo
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- CN109385109A CN109385109A CN201811091032.1A CN201811091032A CN109385109A CN 109385109 A CN109385109 A CN 109385109A CN 201811091032 A CN201811091032 A CN 201811091032A CN 109385109 A CN109385109 A CN 109385109A
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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
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- Chemical Kinetics & Catalysis (AREA)
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention belongs to wood plastic composite technical fields, more particularly to a kind of wood plastic composite with flame retarding function, including weedtree powder, wood-fibred protective agent, high-density polyethylene resin, resin modifying agent, bulk modified dose and fire retardant, wherein fire retardant is solid flame retardant, including magnesium hydroxide, diatomite and semi silica clay.The present invention has preparation method rationally effective, the advantage that product material flame retardant property is good and wood plastic composite entirety using effect is good.
Description
Technical field
The invention belongs to wood plastic composite technical field more particularly to a kind of wood and plastic composites with flame retarding function
Material.
Background technique
Wood plastic composite refers to the new material being prepared by thermoplastic and Wood Fiber Composite, general to use
In exterior finish.The wood plastic composite of fire-retardant class has basic flame retardant effect, the condition of a disaster can be delayed climing when fire occurs
Prolong, but its flame retardant property of existing flame-retardant wood-plastic composite material is very different in the market, is badly in need of the fire-retardant of a performance brilliance
Wood-plastic products.
Patent publication No. is CN105754364A, and publication date is that the Chinese invention patent of 2016.07.13 discloses a kind of resistance
Firebrand plastic composite materials, are mixed by following components: wood powder, high density polyethylene (HDPE), and maleic anhydride grafted polyethylene is fire-retardant
Agent.
But there is flame retardant effect difference in the flame-retardant wood-plastic composite material in the patent of invention.
Summary of the invention
It, can be by weedtree powder and highly dense the object of the present invention is to provide a kind of wood plastic composite with flame retarding function
Degree polyvinyl resin first pre-processes, then mixes with bulk modified dose and fire retardant, finally by double-layer coextrusion mode, is prepared into
To flame-retardant wood-plastic composite.The present invention has preparation method rationally effective, and product material flame retardant property is good and wood moulding is multiple
The good advantage of condensation material entirety using effect.
The present invention solve the above problems the technical solution adopted is that: a kind of wood plastic composite with flame retarding function, packet
Weedtree powder, wood-fibred protective agent, high-density polyethylene resin, resin modifying agent, bulk modified dose and fire retardant are included, wherein hindering
Combustion agent is solid flame retardant, including magnesium hydroxide, diatomite and semi silica clay.
In the present invention, wood-fibred protective agent pointedly modifies weedtree powder, and resin modifying agent is pointedly improved highly dense
Polyvinyl resin is spent, is finally mixed again with bulk modified dose and fire retardant, the characteristic of mixed material can be made to obtain maximum excellent
Change, middle one pot of wood-fibred, plastics and additive mode being stirred, the present invention have material characteristic excellent compared to the prior art
It is good to change improved effect, the thorough advantage of degree.
Further preferred technical solution is: bulk modified dose include for the whole structure reinforcing agent for mixing addition,
Compatilizer, lubricant, binder and toughener.
Further preferred technical solution is: wood-fibred protective agent includes antimildew and antibacterial agent and hygroscopic agent；Resin improvement
Agent includes dispersing agent, tackifier and stabilizer.
In the present invention, wood-fibred generally has the easy mould proof problem more with moisture of carrying disease germs, if be directly mixed with
Wood-plastic material, the final service life and integral strength for being easy to influence material, therefore antimildew and antibacterial agent and hygroscopic agent can be effective
Carry out pointedly modified optimization, and high-density polyethylene resin be used for do wood plastic composite main component when, need it
Possess bigger viscosity, and be uniformly dispersed in final material composition, stablizes, therefore dispersing agent and stabilizer can be first passed through
Preparatory modifying and decorating is carried out, so that polyethylene long-chain hangs up mutually exclusive separated ionizing group, guarantees that polyvinyl resin is wrapping
It is uniformly dispersed in the whole material of the powder containing weedtree, the final uniform intensity for guaranteeing wood plastic composite.
Further preferred technical solution is: structure reinforcing agent includes calcium powder and hollow iron shot；Compatilizer is maleic acid
Acid anhydride graft polypropylene；Lubricant is lithium base grease, and binder is polyurethane adhesive, and toughener is Phthalates toughening
Agent.
Further preferred technical solution is: antimildew and antibacterial agent is poly- methylene hydrochloric acid；Hygroscopic agent is calcium chloride；Point
Powder is lauryl sodium sulfate；Tackifier are rosin resin；Stabilizer is bis- (2,2,6,6- tetramethyl -4- piperidines) last of the ten Heavenly stems
The light stabilizer of two acid esters.
In the present invention, bis- (2,2,6,6- tetramethyl -4- piperidines) sebacates are exposed to the sun for material in outdoor for a long time
Colour stability afterwards avoids too fast decoloration, guarantees the whole using effect of wood plastic composite.
Further preferred technical solution is to include following each component by weight: 60-70 parts of weedtree powder, mould proof anti-
0.5-1.5 parts of microbial inoculum, 2-3 parts of hygroscopic agent, 25-35 parts of high-density polyethylene resin, 0.2-0.8 parts of dispersing agent, tackifier 0.5-
1.2 parts, 6-7.5 parts of stabilizer, 12-15 parts of structure reinforcing agent, 3-6 parts of compatilizer, 2-3 parts of lubricant, 15-19 parts of binder,
7-8 parts of toughener and 1-1.5 parts of fire retardant.
Further preferred technical solution be preparation method successively the following steps are included:
S1, weedtree powder, antimildew and antibacterial agent and hygroscopic agent are mixed, temperature is 95-98 DEG C, obtains the wooden fibre after mixing evenly
Tie up component；
High-density polyethylene resin, dispersing agent, tackifier and stabilizer are mixed heating stirring by S2, and control temperature range is
120-128 DEG C, increasing extent of temperature is 2-2.5 DEG C/s, speed of agitator 350-450r/min, and stirring 45-80min obtains plastics group
Point；
S3, structure reinforcing agent, compatilizer, lubricant, binder, toughener and fire retardant are stirred in advance, then
Heating mixing is carried out with wood-fibred component and plastic fraction, it is 250-380 DEG C that temperature, which is mixed, in heating, and mixing time is
1-3.5h obtains material to be granulated；
S4, granulation material progress granulation operations are treated, control barrel temperature is 180 DEG C, and feeding revolving speed is 350 r/min, is obtained
Wood moulding particle；
S5, extrusion molding operation, control feeding revolving speed are 25r/min, and mold temperature is 155 DEG C, and barrel temperature is 190 DEG C, altogether
Barrel temperature is 210 DEG C when squeezing, and mold temperature is 210 DEG C, and fabric revolving speed is 650r/min, forms surface layer, sandwich layer two-layer equation wood
Plastic composite materials.
Further preferred technical solution is: the material to be granulated of surface layer and sandwich layer, which separates, independently to be prepared, in surface layer
High-density polyethylene resin weight accounting is greater than the high-density polyethylene resin weight accounting in sandwich layer.
In the present invention, material surface needs higher intensity and better flame retardant effect, therefore in surface layer material composition
Intensity is relatively large, just should be more compared with the high-density polyethylene resin of difficult to burn, and sandwich layer is fitted on metope floor, guarantees base
Plinth support construction intensity.
Further preferred technical solution is: carrying out the embossing of surface layer high temperature after the completion of the preparation of two-layer equation wood plastic composite
And wire drawing process.
Further preferred technical solution is: in fire retardant the weight accounting of magnesium hydroxide be 25-32%, diatomite with
And semi silica clay mixed before calcination processing, calcination temperature be 1200-1300 DEG C, calcination time 0.3-0.5h, most
150 meshes are crossed afterwards obtains effective finished product.
In the present invention, magnesium hydroxide performance on flame retardant effect is significant, and diatomite and semi silica clay are for making up
Structural instability of hydroxide under the conditions of very high temperature, and diatomite and semi silica clay itself need ability after calcining
Flame retardant effect is preferably improved, having the wood plastic composite in the present invention, comprehensive performance is good and flame retardant property is aobvious
The advantages of work.
The present invention is first pre-processed by weedtree powder and high-density polyethylene resin, then mixed with bulk modified dose and fire retardant
It closes, finally by double-layer coextrusion mode, flame-retardant wood-plastic composite is prepared.There is the present invention preparation method rationally to have
Effect, the advantage that product material flame retardant property is good and wood plastic composite entirety using effect is good.
Specific embodiment
As described below is only presently preferred embodiments of the present invention, non-to be defined to the scope of the present invention.
Embodiment 1: a kind of wood plastic composite with flame retarding function, including weedtree powder 60kg, poly- methylene hydrochloric acid
0.5kg, calcium chloride 2kg, high-density polyethylene resin 25kg, lauryl sodium sulfate 0.2kg, rosin resin 0.5kg, it is bis- (2,
2,6,6- tetramethyl -4- piperidines) sebacate 6kg, calcium powder and the total 12kg of hollow iron shot, maleic anhydride inoculated polypropylene
3kg, lithium base grease 2kg, polyurethane adhesive 15kg, Phthalates toughener 7kg and magnesium hydroxide, diatomite with
And the total 1kg of semi silica clay, wherein magnesium hydroxide 0.25kg, diatomite and semi silica clay mixed before calcining at
Reason, calcination temperature are 1200 DEG C, calcination time 0.3h, finally cross 150 meshes and obtain effective fire retardant finished product.
Above-mentioned material removes outside high-density polyethylene resin 25kg, other all materials are divided half-and-half by weight, high density
Polyvinyl resin is divided into 20% and 80% two part by weight, i.e. portion 5kg, a 20kg, independently carries out following preparation behaviour
Make technique until obtaining wood moulding particle, high-density polyethylene resin is that the portion of 20kg forms surface layer for co-extrusion by weight.
Wood plastic composite the preparation method is as follows:
S1, weedtree powder, poly- methylene hydrochloric acid and calcium chloride are mixed, temperature is 95 DEG C, obtains wood after mixing evenly
Fibre fractionation；
S2 is by high-density polyethylene resin, lauryl sodium sulfate, rosin resin and bis- (2,2,6,6- tetramethyl -4- piperazines
Pyridine) sebacate mixing heating stirring, control temperature range is 120-128 DEG C, and increasing extent of temperature is 2 DEG C/s, and speed of agitator is
350r/min, stirring 45min obtain plastic fraction；
S3, by calcium powder and hollow iron shot, maleic anhydride inoculated polypropylene, lithium base grease, polyurethane adhesive, phthalic acid ester
The fire retardant of class toughener and magnesium hydroxide, diatomite and semi silica clay composition is stirred in advance, then with wood
Fibre fractionation and plastic fraction carry out heating mixing, and it is 250 DEG C that temperature, which is mixed, in heating, and mixing time 1h is obtained
Material to be granulated；
S4, granulation material progress granulation operations are treated, control barrel temperature is 180 DEG C, and feeding revolving speed is 350 r/min, is obtained
Wood moulding particle；
S5, extrusion molding operation, control feeding revolving speed are 25r/min, and mold temperature is 155 DEG C, and barrel temperature is 190 DEG C, altogether
Barrel temperature is 210 DEG C when squeezing, and mold temperature is 210 DEG C, and fabric revolving speed is 650r/min, forms surface layer, sandwich layer two-layer equation wood
Plastic composite materials.
When the wood plastic composite that the present embodiment is prepared is with regard to bending strength (MPa), oxygen index (OI) (%), average ignition
Between (s), average heat release rate (kw/m2) and cigarette rate of release (m2/s) five indices and professional standard carry out test ratio
Compared with to verify Flame Retardancy energy, as a result such as following table.
Embodiment 2: a kind of wood plastic composite with flame retarding function, including weedtree powder 65kg, poly- methylene hydrochloric acid
1.0kg, calcium chloride 2kg, high-density polyethylene resin 30kg, lauryl sodium sulfate 0.2kg, rosin resin 0.5kg, it is bis- (2,
2,6,6- tetramethyl -4- piperidines) sebacate 6kg, calcium powder and the total 13kg of hollow iron shot, maleic anhydride inoculated polypropylene
3kg, lithium base grease 2.5kg, polyurethane adhesive 17kg, Phthalates toughener 8kg and magnesium hydroxide, diatomite
And the total 1kg of semi silica clay, wherein magnesium hydroxide 0.25kg, diatomite and semi silica clay mixed before calcining at
Reason, calcination temperature are 1250 DEG C, calcination time 0.4h, finally cross 150 meshes and obtain effective fire retardant finished product.
Above-mentioned material removes outside high-density polyethylene resin 30kg, other all materials are divided half-and-half by weight, high density
Polyvinyl resin is divided into 20% and 80% two part by weight, i.e. portion 6kg, a 24kg, independently carries out following preparation behaviour
Make technique until obtaining wood moulding particle, high-density polyethylene resin is that the portion of 24kg forms surface layer for co-extrusion by weight.
Wood plastic composite the preparation method is as follows:
S1, weedtree powder, poly- methylene hydrochloric acid and calcium chloride are mixed, temperature is 96 DEG C, obtains wood after mixing evenly
Fibre fractionation；
S2 is by high-density polyethylene resin, lauryl sodium sulfate, rosin resin and bis- (2,2,6,6- tetramethyl -4- piperazines
Pyridine) sebacate mixing heating stirring, control temperature range is 120-128 DEG C, and increasing extent of temperature is 2.2 DEG C/s, and speed of agitator is
400r/min, stirring 60min obtain plastic fraction；
S3, by calcium powder and hollow iron shot, maleic anhydride inoculated polypropylene, lithium base grease, polyurethane adhesive, phthalic acid ester
The fire retardant of class toughener and magnesium hydroxide, diatomite and semi silica clay composition is stirred in advance, then with wood
Fibre fractionation and plastic fraction carry out heating mixing, and it is 350 DEG C that temperature, which is mixed, in heating, and mixing time 3h is obtained
Material to be granulated；
S4, granulation material progress granulation operations are treated, control barrel temperature is 180 DEG C, and feeding revolving speed is 350 r/min, is obtained
Wood moulding particle；
S5, extrusion molding operation, control feeding revolving speed are 25r/min, and mold temperature is 155 DEG C, and barrel temperature is 190 DEG C, altogether
Barrel temperature is 210 DEG C when squeezing, and mold temperature is 210 DEG C, and fabric revolving speed is 650r/min, forms surface layer, sandwich layer two-layer equation wood
Plastic composite materials.
When the wood plastic composite that the present embodiment is prepared is with regard to bending strength (MPa), oxygen index (OI) (%), average ignition
Between (s), average heat release rate (kw/m2) and cigarette rate of release (m2/s) five indices and professional standard carry out test ratio
Compared with to verify Flame Retardancy energy, as a result such as following table.
Embodiment 3: a kind of wood plastic composite with flame retarding function, including weedtree powder 70kg, poly- methylene hydrochloric acid
1.5kg, calcium chloride 3kg, high-density polyethylene resin 35kg, lauryl sodium sulfate 0.6kg, rosin resin 1.2kg, it is bis- (2,
2,6,6- tetramethyl -4- piperidines) sebacate 7kg, calcium powder and the total 15kg of hollow iron shot, maleic anhydride inoculated polypropylene
3kg, lithium base grease 2.5kg, polyurethane adhesive 19kg, Phthalates toughener 8kg and magnesium hydroxide, diatomite
And the total 1kg of semi silica clay, wherein magnesium hydroxide 0.25kg, diatomite and semi silica clay mixed before calcining at
Reason, calcination temperature are 1300 DEG C, calcination time 0.5h, finally cross 150 meshes and obtain effective fire retardant finished product.
Above-mentioned material removes outside high-density polyethylene resin 35kg, other all materials are divided half-and-half by weight, high density
Polyvinyl resin is divided into 20% and 80% two part by weight, i.e. portion 7kg, a 28kg, independently carries out following preparation behaviour
Make technique until obtaining wood moulding particle, high-density polyethylene resin is that the portion of 28kg forms surface layer for co-extrusion by weight.
Wood plastic composite the preparation method is as follows:
S1, weedtree powder, poly- methylene hydrochloric acid and calcium chloride are mixed, temperature is 98 DEG C, obtains wood after mixing evenly
Fibre fractionation；
S2 is by high-density polyethylene resin, lauryl sodium sulfate, rosin resin and bis- (2,2,6,6- tetramethyl -4- piperazines
Pyridine) sebacate mixing heating stirring, control temperature range is 120-128 DEG C, and increasing extent of temperature is 2.5 DEG C/s, and speed of agitator is
450r/min, stirring 80min obtain plastic fraction；
S3, by calcium powder and hollow iron shot, maleic anhydride inoculated polypropylene, lithium base grease, polyurethane adhesive, phthalic acid ester
The fire retardant of class toughener and magnesium hydroxide, diatomite and semi silica clay composition is stirred in advance, then with wood
Fibre fractionation and plastic fraction carry out heating mixing, and it is 380 DEG C that temperature, which is mixed, in heating, and mixing time 3.2h is obtained
To material to be granulated；
S4, granulation material progress granulation operations are treated, control barrel temperature is 180 DEG C, and feeding revolving speed is 350 r/min, is obtained
Wood moulding particle；
S5, extrusion molding operation, control feeding revolving speed are 25r/min, and mold temperature is 155 DEG C, and barrel temperature is 190 DEG C, altogether
Barrel temperature is 210 DEG C when squeezing, and mold temperature is 210 DEG C, and fabric revolving speed is 650r/min, forms surface layer, sandwich layer two-layer equation wood
Plastic composite materials.
When the wood plastic composite that the present embodiment is prepared is with regard to bending strength (MPa), oxygen index (OI) (%), average ignition
Between (s), average heat release rate (kw/m2) and cigarette rate of release (m2/s) five indices and professional standard carry out test ratio
Compared with to verify Flame Retardancy energy, as a result such as following table.
Table wood plastic composite test result compares
From the test result in upper table it can be concluded that the wood-plastic composite material products of three embodiments in the present invention have basis
The advantages of structural strength is big and good flame retardation effect, significantly larger than standard figures.
The embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments, in institute
It states technical field those of ordinary skill within the scope of knowledge, can also make without departing from the purpose of the present invention
Various modifications.These are all without creative modification, as long as all by Patent Law in scope of the presently claimed invention
Protection.
Claims (10)
1. a kind of wood plastic composite with flame retarding function, it is characterised in that: including weedtree powder, wood-fibred protective agent, highly dense
Polyvinyl resin, resin modifying agent, bulk modified dose and fire retardant are spent, wherein fire retardant is solid flame retardant, including hydrogen-oxygen
Change magnesium, diatomite and semi silica clay.
2. a kind of wood plastic composite with flame retarding function according to claim 1, it is characterised in that: bulk modified dose
Including for whole structure reinforcing agent, compatilizer, lubricant, binder and the toughener for mixing addition.
3. a kind of wood plastic composite with flame retarding function according to claim 2, it is characterised in that: wood-fibred protection
Agent includes antimildew and antibacterial agent and hygroscopic agent；Resin modifying agent includes dispersing agent, tackifier and stabilizer.
4. a kind of wood plastic composite with flame retarding function according to claim 2, it is characterised in that: structure reinforcing agent
Including calcium powder and hollow iron shot；Compatilizer is maleic anhydride inoculated polypropylene；Lubricant is lithium base grease, and binder is poly- ammonia
Ester binder, toughener are Phthalates toughener.
5. a kind of wood plastic composite with flame retarding function according to claim 3, it is characterised in that: antimildew and antibacterial agent
For poly- methylene hydrochloric acid；Hygroscopic agent is calcium chloride；Dispersing agent is lauryl sodium sulfate；Tackifier are rosin resin；Stablize
Agent is the light stabilizer of bis- (2,2,6,6- tetramethyl -4- piperidines) sebacates.
6. a kind of wood plastic composite with flame retarding function according to claim 3, it is characterised in that including by weight
The following each component of meter: 60-70 parts of weedtree powder, 0.5-1.5 parts of antimildew and antibacterial agent, 2-3 parts of hygroscopic agent, high-density polyethylene resin
25-35 parts, it is 0.2-0.8 parts of dispersing agent, 0.5-1.2 parts of tackifier, 6-7.5 parts of stabilizer, 12-15 parts of structure reinforcing agent, compatible
3-6 parts of agent, 2-3 parts of lubricant, 15-19 parts of binder, 7-8 parts of toughener and 1-1.5 parts of fire retardant.
7. a kind of wood plastic composite with flame retarding function according to claim 3, it is characterised in that preparation method according to
It is secondary the following steps are included:
S1, weedtree powder, antimildew and antibacterial agent and hygroscopic agent are mixed, temperature is 95-98 DEG C, obtains the wooden fibre after mixing evenly
Tie up component；
High-density polyethylene resin, dispersing agent, tackifier and stabilizer are mixed heating stirring by S2, and control temperature range is
120-128 DEG C, increasing extent of temperature is 2-2.5 DEG C/s, speed of agitator 350-450r/min, and stirring 45-80min obtains plastics group
Point；
S3, structure reinforcing agent, compatilizer, lubricant, binder, toughener and fire retardant are stirred in advance, then
Heating mixing is carried out with wood-fibred component and plastic fraction, it is 250-380 DEG C that temperature, which is mixed, in heating, and mixing time is
1-3.5h obtains material to be granulated；
S4, granulation material progress granulation operations are treated, control barrel temperature is 180 DEG C, and feeding revolving speed is 350 r/min, is obtained
Wood moulding particle；
S5, extrusion molding operation, control feeding revolving speed are 25r/min, and mold temperature is 155 DEG C, and barrel temperature is 190 DEG C, altogether
Barrel temperature is 210 DEG C when squeezing, and mold temperature is 210 DEG C, and fabric revolving speed is 650r/min, forms surface layer, sandwich layer two-layer equation wood
Plastic composite materials.
8. a kind of wood plastic composite with flame retarding function according to claim 7, it is characterised in that: surface layer and sandwich layer
Material to be granulated separate it is independent prepare, it is poly- that the high-density polyethylene resin weight accounting in surface layer is greater than the high density in sandwich layer
Vinyl weight accounting.
9. a kind of wood plastic composite with flame retarding function according to claim 7, it is characterised in that: two-layer equation wood moulding
The embossing of surface layer high temperature and wire drawing process are carried out after the completion of composite material preparation.
10. a kind of wood plastic composite with flame retarding function according to claim 1, it is characterised in that: in fire retardant
The weight accounting of magnesium hydroxide is 25-32%, diatomite and semi silica clay mixed before calcination processing, calcination temperature
It is 1200-1300 DEG C, calcination time 0.3-0.5h finally crosses 150 meshes and obtains effective finished product.
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| CN201811091032.1A CN109385109A (en) | 2018-09-19 | 2018-09-19 | A kind of wood plastic composite with flame retarding function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811091032.1A CN109385109A (en) | 2018-09-19 | 2018-09-19 | A kind of wood plastic composite with flame retarding function |
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2018
- 2018-09-19 CN CN201811091032.1A patent/CN109385109A/en active Pending
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| CN106928743A (en) * | 2017-05-04 | 2017-07-07 | 冯志容 | A kind of Environmental-protechigh-performance high-performance wood-plastic composite |
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Application publication date: 20190226 |