CN104725705B - A kind of preparation method of Polyethylene wood plastic composite material - Google Patents
A kind of preparation method of Polyethylene wood plastic composite material Download PDFInfo
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- CN104725705B CN104725705B CN201510130101.5A CN201510130101A CN104725705B CN 104725705 B CN104725705 B CN 104725705B CN 201510130101 A CN201510130101 A CN 201510130101A CN 104725705 B CN104725705 B CN 104725705B
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- 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
- C08L23/04—Homopolymers or copolymers of ethene
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The present invention provides the preparation method of a kind of novel polyethylene wood plastic composite, its step is as follows: rape stalk, cotton stalk, cotton stalk are pulverized by (1), dry, obtain wood powder, wood powder is soaked in supersound process in NaOH solution, it is washed with deionized after taking-up, sieves after drying, obtain the wood powder that alkalizes；(2) polyethylene, maleic anhydride, rare earth oxide, DCP is mixing, obtain rare earth compatilizer；(3) phenolic resin, rare earth chloride are added in reactor, heated and stirred, reactant liquor is heated to boiling, back flow reaction, continues heating and thermal insulation, stop heating, reaction, obtain rare earth phenolic resin；(4) by polyethylene, alkalization wood powder, compatilizer, the mixing of rare earth phenolic resin, move to baking oven be dried to constant weight, obtain compound；(5) add mixture into extruding pelletization in conical double screw extruder, obtain pellet, dry, obtain Polyethylene wood plastic composite material.
Description
Technical field:
The present invention relates to a kind of construction material, particularly relate to a kind of Polyethylene wood plastic composite material
Preparation method.
Background technology:
Wood plastic composite (Wood-Plastic Composites is called for short WPC) is domestic
The outer class composite being in recent years surging forward, refers to utilize polyethylene, polypropylene and polrvinyl chloride
Common adhesive is replaced, with the useless Plant fiber such as wood powder, rice husk, straw etc. Resin adhesive
The new wood materials mixed, more raw through processing technique such as extruding, mold pressing, injection mouldings
The sheet material of output or section bar, be mainly used in the industries such as building materials, furniture, logistics packaging.Polyethylene
Wood plastic composite is to use more one in wood plastic composite, has good processability
Energy, intensity, adjustable, light stability.
Such as, Publication No. CN101792609B, publication date are 2012.04.18, applicant
Disclose for the Chinese patent of Dezhou Sanhui Wood Technology Co., Ltd. that " polyethylene based wood-plastic is combined
Material and preparation method ", this patent by waste polyethylene granule, wood powder maleic acid grafting PE,
Carboxyl ethylene-propylene diene copolymer, other auxiliary agents add in the most mixed machine mixed according to the raw material that formula is prepared
Closing, mixing time is 15-20 minute, mixing temperature 80-90 DEG C；The raw material mixed is added
Entering in extruder and extrude, extruder engine speed is 40-60 rev/min, and feeding machine turns
Speed is 4-6 rev/min；Shape after extrusion.The polyethylene raw material that this patent is used is
Waste polyethylene, wood powder is good-for-nothing Poplar Powder, weedtree powder or crop material powder, and price is low
Honest and clean, the saving energy, protection environment, but prepared polyethylene based wood-plastic composite material
Corrosion Protection is the best, long-time in the environment of some is moist or soda acid degree is higher
Can be corroded after using, cause its performance to be greatly reduced, service life is greatly shortened.
Summary of the invention:
The technical problem to be solved in the present invention is to provide the system of a kind of Polyethylene wood plastic composite material
Preparation Method, the decay resistance of the composite prepared is preferable, and service life is longer.
For solving above-mentioned technical problem, the technical scheme is that
A kind of preparation method of Polyethylene wood plastic composite material, its step is as follows:
(1) rape stalk, cotton stalk add pulverizer together pulverize 3 hours, be placed in
Drying 12 hours in 120 DEG C of drying baker, obtain wood powder, wood powder is soaked in mass fraction is
In the NaOH solution of 20%, supersound process 40 minutes, are washed with deionized after taking-up, are placed in
Sieve after 90 DEG C of baking ovens are dried 20 hours, obtain the wood powder that alkalizes；
(2) polyethylene, maleic anhydride, rare earth oxide, DCP are added in mixing roll together
At 140 DEG C mixing 15 minutes, pulverize after naturally cooling to room temperature, obtain rare earth compatilizer；
(3) phenolic resin, rare earth chloride are added in reactor together, be heated to 90 DEG C and stir
Mix 20 minutes, reactant liquor is heated to boiling, back flow reaction 3 hours, continues to be heated to 150 DEG C
It is incubated 1 hour, stops heating, reaction, naturally cool to room temperature after discharging, obtain rare earth phenol
Urea formaldehyde；
(4) alkalization wood powder, the step (2) polyethylene, step (1) obtained obtains
The rare earth phenolic resin that rare earth compatilizer, step (3) obtain adds mixer mixing 10 together
Minute, move to baking oven is dried to constant weight at 80 DEG C, mixed after naturally cooling to room temperature
Material；
(5) compound step (4) obtained adds to extrude in conical double screw extruder to be made
Grain, obtains pellet, is placed in by pellet in baking oven and dries 2 hours at 85 DEG C, obtains polyethylene
Wood plastic composite.
Preferably, in step of the present invention (1), rape stalk, the weight of cotton stalk
Ratio is 1:3.
Preferably, in step of the present invention (1), the water content of wood powder is less than 5%.
Preferably, in step of the present invention (1), wood powder with the weight ratio of NaOH solution is
1:2。
Preferably, in step of the present invention (1), the particle diameter of alkalization wood powder is 70-80 mesh.
Preferably, in step of the present invention (2), polyethylene, maleic anhydride, oxidation are dilute
Soil, the weight ratio of DCP are 100:4:1:2.
Preferably, in step of the present invention (2), phenolic resin and the weight of rare earth chloride
Ratio is 19:1.
Preferably, in step of the present invention (4), the alkali that polyethylene, step (1) obtain
Change rare earth compatilizer that wood powder, step (2) obtain, rare earth phenolic aldehyde tree that step (3) obtains
The weight ratio of fat is 100:(80-140): (8-15): (4-9).
Preferably, in step of the present invention (5), the rotating speed of conical double screw extruder is
50rpm。
Preferably, in step of the present invention (5), each section of temperature of conical double screw extruder
Degree is respectively 135 DEG C, 140 DEG C, 145 DEG C, 150 DEG C, 165 DEG C, 185 DEG C, 185 DEG C.
Compared with prior art, the method have the advantages that
1) reactivity of rare earth chloride is higher, produces after reacting with phenolic resin strand
Chemistry bond energy is extremely strong, therefore can be effectively improved the decay resistance of phenolic resin, and rare earth chloride
Create stronger cross-linking reaction between modified phenolic resin and polyvinyl resin matrix, increase
Add the crosslink density in composite and the uniformity of cross-bond distribution, thus be effectively improved
The Resistance of Phenolic Modified of composite and decay resistance.
2) rape stalk, cotton stalk, cotton stalk are all rich in Plant fiber, but its table
Face also would generally adsorbing contaminant, it is internal containing some micromolecular compounds, and therefore the present invention is led to
Cross basification to be washed by these small-molecule substances, effectively eliminate small-molecule substance mixing
During produce weak boundary effect, improve the extent of reaction between wood powder and compatilizer, and
And basification makes the partial lignin on wood powder surface be dissolved partly doing cellulose, wood powder
Surface and internal void surface occur in that a lot of pit therewith, improve the roughness of wood powder, this
Sample is conducive to the interface between wood powder and base polyethylene to form stronger interface cohesion, improves multiple
The mechanical property of condensation material.
3) polar group affine with the polar portion of wood powder is contained in one end of rare earth compatilizer,
The other end is then the non-polar group affine with the polyvinyl resin matrix of low pole, at rare-earth phase
Holding under the function served as bridge of agent, the interface energy between wood powder and resin matrix is weakened, improves wood
The powder scattered uniformity in resin matrix and interface affinity therebetween, and dilute
The polarity of soil compatilizer is stronger so that it is added with the active force of wood powder and resin matrix
By force, therefore can further improve the mechanical property of composite.
Detailed description of the invention:
The present invention is described in detail, schematic in this present invention below in conjunction with specific embodiment
Embodiment and explanation are used for explaining the present invention, but not as a limitation of the invention.
Embodiment 1
A kind of preparation method of Polyethylene wood plastic composite material, its step is as follows:
(1) by weight ratio be 1:2:1 rape stalk, cotton stalk, cotton stalk together
Add pulverizer to pulverize 3 hours, dry 12 hours in being placed in 120 DEG C of drying baker, contained
The water yield is the following wood powder of 5%, is soaked in by wood powder in the NaOH solution that mass fraction is 20%
Supersound process 40 minutes, the weight ratio of wood powder and NaOH solution is 1:2, spend after taking-up from
Sub-water washs, and is placed in 90 DEG C of baking ovens after being dried 20 hours and sieves, is 70-80 mesh to particle diameter
Alkalization wood powder；
(2) by weight ratio be the polyethylene of 100:4:1:2, maleic anhydride, rare earth oxide,
DCP adds in mixing roll at 140 DEG C mixing 15 minutes together, pulverizes after naturally cooling to room temperature,
Obtain rare earth compatilizer；
(3) it is that the phenolic resin of 19:1, rare earth chloride add in reactor together by weight ratio,
It is heated to 90 DEG C to stir 20 minutes, is heated to reactant liquor seething with excitement, back flow reaction 3 hours,
Continue to be heated to 150 DEG C and be incubated 1 hour, stop heating, reaction, naturally cool to after discharging
Room temperature, obtains rare earth phenolic resin；
(4) it is the alkalization that the polyethylene of 100:90:14:5, step (1) obtain by weight ratio
The rare earth phenolic resin that rare earth compatilizer that wood powder, step (2) obtain, step (3) obtain
Add mixer together to mix 10 minutes, move to baking oven is dried at 80 DEG C to constant weight, natural
Compound is obtained after being cooled to room temperature；
(5) compound step (4) obtained adds to extrude in conical double screw extruder to be made
Grain, the rotating speed of conical double screw extruder is 50rpm, each section of temperature be respectively 135 DEG C,
140 DEG C, 145 DEG C, 150 DEG C, 165 DEG C, 185 DEG C, 185 DEG C, obtain pellet, pellet is put
Dry 2 hours at 85 DEG C in baking oven, obtain Polyethylene wood plastic composite material.
Embodiment 2
A kind of preparation method of Polyethylene wood plastic composite material, its step is as follows:
(1) by weight ratio be 1:2:1 rape stalk, cotton stalk, cotton stalk together
Add pulverizer to pulverize 3 hours, dry 12 hours in being placed in 120 DEG C of drying baker, contained
The water yield is the following wood powder of 5%, is soaked in by wood powder in the NaOH solution that mass fraction is 20%
Supersound process 40 minutes, the weight ratio of wood powder and NaOH solution is 1:2, spend after taking-up from
Sub-water washs, and is placed in 90 DEG C of baking ovens after being dried 20 hours and sieves, is 70-80 mesh to particle diameter
Alkalization wood powder；
(2) by weight ratio be the polyethylene of 100:4:1:2, maleic anhydride, rare earth oxide,
DCP adds in mixing roll at 140 DEG C mixing 15 minutes together, pulverizes after naturally cooling to room temperature,
Obtain rare earth compatilizer；
(3) it is that the phenolic resin of 19:1, rare earth chloride add in reactor together by weight ratio,
It is heated to 90 DEG C to stir 20 minutes, is heated to reactant liquor seething with excitement, back flow reaction 3 hours,
Continue to be heated to 150 DEG C and be incubated 1 hour, stop heating, reaction, naturally cool to after discharging
Room temperature, obtains rare earth phenolic resin；
(4) it is the alkalization that the polyethylene of 100:80:11:4, step (1) obtain by weight ratio
The rare earth phenolic resin that rare earth compatilizer that wood powder, step (2) obtain, step (3) obtain
Add mixer together to mix 10 minutes, move to baking oven is dried at 80 DEG C to constant weight, natural
Compound is obtained after being cooled to room temperature；
(5) compound step (4) obtained adds to extrude in conical double screw extruder to be made
Grain, the rotating speed of conical double screw extruder is 50rpm, each section of temperature be respectively 135 DEG C,
140 DEG C, 145 DEG C, 150 DEG C, 165 DEG C, 185 DEG C, 185 DEG C, obtain pellet, pellet is put
Dry 2 hours at 85 DEG C in baking oven, obtain Polyethylene wood plastic composite material.
Embodiment 3
A kind of preparation method of Polyethylene wood plastic composite material, its step is as follows:
(1) by weight ratio be 1:2:1 rape stalk, cotton stalk, cotton stalk together
Add pulverizer to pulverize 3 hours, dry 12 hours in being placed in 120 DEG C of drying baker, contained
The water yield is the following wood powder of 5%, is soaked in by wood powder in the NaOH solution that mass fraction is 20%
Supersound process 40 minutes, the weight ratio of wood powder and NaOH solution is 1:2, spend after taking-up from
Sub-water washs, and is placed in 90 DEG C of baking ovens after being dried 20 hours and sieves, is 70-80 mesh to particle diameter
Alkalization wood powder；
(2) by weight ratio be the polyethylene of 100:4:1:2, maleic anhydride, rare earth oxide,
DCP adds in mixing roll at 140 DEG C mixing 15 minutes together, pulverizes after naturally cooling to room temperature,
Obtain rare earth compatilizer；
(3) it is that the phenolic resin of 19:1, rare earth chloride add in reactor together by weight ratio,
It is heated to 90 DEG C to stir 20 minutes, is heated to reactant liquor seething with excitement, back flow reaction 3 hours,
Continue to be heated to 150 DEG C and be incubated 1 hour, stop heating, reaction, naturally cool to after discharging
Room temperature, obtains rare earth phenolic resin；
(4) it is the alkali that the polyethylene of 100:120:12:9, step (1) obtain by weight ratio
Change rare earth compatilizer that wood powder, step (2) obtain, rare earth phenolic aldehyde tree that step (3) obtains
Fat adds mixer together and mixes 10 minutes, moves to dry to constant weight at 80 DEG C in baking oven, from
Compound is obtained after being so cooled to room temperature；
(5) compound step (4) obtained adds to extrude in conical double screw extruder to be made
Grain, the rotating speed of conical double screw extruder is 50rpm, each section of temperature be respectively 135 DEG C,
140 DEG C, 145 DEG C, 150 DEG C, 165 DEG C, 185 DEG C, 185 DEG C, obtain pellet, pellet is put
Dry 2 hours at 85 DEG C in baking oven, obtain Polyethylene wood plastic composite material.
Embodiment 4
A kind of preparation method of Polyethylene wood plastic composite material, its step is as follows:
(1) by weight ratio be 1:2:1 rape stalk, cotton stalk, cotton stalk together
Add pulverizer to pulverize 3 hours, dry 12 hours in being placed in 120 DEG C of drying baker, contained
The water yield is the following wood powder of 5%, is soaked in by wood powder in the NaOH solution that mass fraction is 20%
Supersound process 40 minutes, the weight ratio of wood powder and NaOH solution is 1:2, spend after taking-up from
Sub-water washs, and is placed in 90 DEG C of baking ovens after being dried 20 hours and sieves, is 70-80 mesh to particle diameter
Alkalization wood powder；
(2) by weight ratio be the polyethylene of 100:4:1:2, maleic anhydride, rare earth oxide,
DCP adds in mixing roll at 140 DEG C mixing 15 minutes together, pulverizes after naturally cooling to room temperature,
Obtain rare earth compatilizer；
(3) it is that the phenolic resin of 19:1, rare earth chloride add in reactor together by weight ratio,
It is heated to 90 DEG C to stir 20 minutes, is heated to reactant liquor seething with excitement, back flow reaction 3 hours,
Continue to be heated to 150 DEG C and be incubated 1 hour, stop heating, reaction, naturally cool to after discharging
Room temperature, obtains rare earth phenolic resin；
(4) it is the alkalization that the polyethylene of 100:10:8:6, step (1) obtain by weight ratio
The rare earth phenolic resin that rare earth compatilizer that wood powder, step (2) obtain, step (3) obtain
Add mixer together to mix 10 minutes, move to baking oven is dried at 80 DEG C to constant weight, natural
Compound is obtained after being cooled to room temperature；
(5) compound step (4) obtained adds to extrude in conical double screw extruder to be made
Grain, the rotating speed of conical double screw extruder is 50rpm, each section of temperature be respectively 135 DEG C,
140 DEG C, 145 DEG C, 150 DEG C, 165 DEG C, 185 DEG C, 185 DEG C, obtain pellet, pellet is put
Dry 2 hours at 85 DEG C in baking oven, obtain Polyethylene wood plastic composite material.
Embodiment 5
A kind of preparation method of Polyethylene wood plastic composite material, its step is as follows:
(1) by weight ratio be 1:2:1 rape stalk, cotton stalk, cotton stalk together
Add pulverizer to pulverize 3 hours, dry 12 hours in being placed in 120 DEG C of drying baker, contained
The water yield is the following wood powder of 5%, is soaked in by wood powder in the NaOH solution that mass fraction is 20%
Supersound process 40 minutes, the weight ratio of wood powder and NaOH solution is 1:2, spend after taking-up from
Sub-water washs, and is placed in 90 DEG C of baking ovens after being dried 20 hours and sieves, is 70-80 mesh to particle diameter
Alkalization wood powder；
(2) by weight ratio be the polyethylene of 100:4:1:2, maleic anhydride, rare earth oxide,
DCP adds in mixing roll at 140 DEG C mixing 15 minutes together, pulverizes after naturally cooling to room temperature,
Obtain rare earth compatilizer；
(3) it is that the phenolic resin of 19:1, rare earth chloride add in reactor together by weight ratio,
It is heated to 90 DEG C to stir 20 minutes, is heated to reactant liquor seething with excitement, back flow reaction 3 hours,
Continue to be heated to 150 DEG C and be incubated 1 hour, stop heating, reaction, naturally cool to after discharging
Room temperature, obtains rare earth phenolic resin；
(4) it is the alkali that the polyethylene of 100:140:10:8, step (1) obtain by weight ratio
Change rare earth compatilizer that wood powder, step (2) obtain, rare earth phenolic aldehyde tree that step (3) obtains
Fat adds mixer together and mixes 10 minutes, moves to dry to constant weight at 80 DEG C in baking oven, from
Compound is obtained after being so cooled to room temperature；
(5) compound step (4) obtained adds to extrude in conical double screw extruder to be made
Grain, the rotating speed of conical double screw extruder is 50rpm, each section of temperature be respectively 135 DEG C,
140 DEG C, 145 DEG C, 150 DEG C, 165 DEG C, 185 DEG C, 185 DEG C, obtain pellet, pellet is put
Dry 2 hours at 85 DEG C in baking oven, obtain Polyethylene wood plastic composite material.
Embodiment 6
A kind of preparation method of Polyethylene wood plastic composite material, its step is as follows:
(1) by weight ratio be 1:2:1 rape stalk, cotton stalk, cotton stalk together
Add pulverizer to pulverize 3 hours, dry 12 hours in being placed in 120 DEG C of drying baker, contained
The water yield is the following wood powder of 5%, is soaked in by wood powder in the NaOH solution that mass fraction is 20%
Supersound process 40 minutes, the weight ratio of wood powder and NaOH solution is 1:2, spend after taking-up from
Sub-water washs, and is placed in 90 DEG C of baking ovens after being dried 20 hours and sieves, is 70-80 mesh to particle diameter
Alkalization wood powder；
(2) by weight ratio be the polyethylene of 100:4:1:2, maleic anhydride, rare earth oxide,
DCP adds in mixing roll at 140 DEG C mixing 15 minutes together, pulverizes after naturally cooling to room temperature,
Obtain rare earth compatilizer；
(3) it is that the phenolic resin of 19:1, rare earth chloride add in reactor together by weight ratio,
It is heated to 90 DEG C to stir 20 minutes, is heated to reactant liquor seething with excitement, back flow reaction 3 hours,
Continue to be heated to 150 DEG C and be incubated 1 hour, stop heating, reaction, naturally cool to after discharging
Room temperature, obtains rare earth phenolic resin；
(4) it is the alkalization that the polyethylene of 100:110:9:7, step (1) obtain by weight ratio
The rare earth phenolic resin that rare earth compatilizer that wood powder, step (2) obtain, step (3) obtain
Add mixer together to mix 10 minutes, move to baking oven is dried at 80 DEG C to constant weight, natural
Compound is obtained after being cooled to room temperature；
(5) compound step (4) obtained adds to extrude in conical double screw extruder to be made
Grain, the rotating speed of conical double screw extruder is 50rpm, each section of temperature be respectively 135 DEG C,
140 DEG C, 145 DEG C, 150 DEG C, 165 DEG C, 185 DEG C, 185 DEG C, obtain pellet, pellet is put
Dry 2 hours at 85 DEG C in baking oven, obtain Polyethylene wood plastic composite material.
By embodiment 1-6 prepare composite and comparative example Corrosion Protection according to
GB/T18593-2001 tests, and wherein, comparative example is Publication No. CN101792609B
Chinese patent,
Test process is divided into hydrochloric acid test and sodium hydroxide to test, and hydrochloric acid is tested as each to be combined
Material is soaked in the hydrochloric acid that mass fraction is 30%, records composite material surface after 3 months
Situation, sodium hydroxide test for being soaked in the hydrogen-oxygen that mass fraction is 30% by each composite
Change in sodium solution, after 3 months, record the situation of composite material surface.
Test result is as follows:
As seen from the above table, the decay resistance of the composite that the present invention prepares is significantly better than contrast
Example.
The principle of above-described embodiment only illustrative present invention and effect thereof, not for restriction
The present invention.Any person skilled in the art all can be in the spirit and the scope without prejudice to the present invention
Under, above-described embodiment is modified or changes.Therefore, such as art has
Generally skill completed under without departing from disclosed spirit and technological thought one
Cut equivalence modify or change, must be contained by the claim of the present invention.
Claims (10)
1. the preparation method of a Polyethylene wood plastic composite material, it is characterised in that: its step
As follows:
(1) rape stalk, cotton stalk add pulverizer together pulverize 3 hours, be placed in
Drying 12 hours in 120 DEG C of drying baker, obtain wood powder, wood powder is soaked in mass fraction is
In the NaOH solution of 20%, supersound process 40 minutes, are washed with deionized after taking-up, are placed in
Sieve after 90 DEG C of baking ovens are dried 20 hours, obtain the wood powder that alkalizes；
(2) polyethylene, maleic anhydride, rare earth oxide, DCP are added in mixing roll together
At 140 DEG C mixing 15 minutes, pulverize after naturally cooling to room temperature, obtain rare earth compatilizer；
(3) phenolic resin, rare earth chloride are added in reactor together, be heated to 90 DEG C and stir
Mix 20 minutes, reactant liquor is heated to boiling, back flow reaction 3 hours, continues to be heated to 150 DEG C
It is incubated 1 hour, stops heating, reaction, naturally cool to room temperature after discharging, obtain rare earth phenol
Urea formaldehyde；
(4) alkalization wood powder, the step (2) polyethylene, step (1) obtained obtains
The rare earth phenolic resin that rare earth compatilizer, step (3) obtain adds mixer mixing 10 together
Minute, move to baking oven is dried to constant weight at 80 DEG C, mixed after naturally cooling to room temperature
Material；
(5) compound step (4) obtained adds to extrude in conical double screw extruder to be made
Grain, obtains pellet, is placed in by pellet in baking oven and dries 2 hours at 85 DEG C, obtains polyethylene
Wood plastic composite.
The preparation method of a kind of Polyethylene wood plastic composite material the most according to claim 1,
It is characterized in that: in described step (1), rape stalk, the weight ratio of cotton stalk are 1:3.
The preparation method of a kind of Polyethylene wood plastic composite material the most according to claim 1,
It is characterized in that: in described step (1), the water content of wood powder is less than 5%.
The preparation method of a kind of Polyethylene wood plastic composite material the most according to claim 1,
It is characterized in that: in described step (1), wood powder is 1:2 with the weight ratio of NaOH solution.
The preparation method of a kind of Polyethylene wood plastic composite material the most according to claim 1,
It is characterized in that: in described step (1), the particle diameter of alkalization wood powder is 70-80 mesh.
The preparation method of a kind of Polyethylene wood plastic composite material the most according to claim 1,
It is characterized in that: in described step (2), polyethylene, maleic anhydride, rare earth oxide, DCP
Weight ratio be 100:4:1:2.
The preparation method of a kind of Polyethylene wood plastic composite material the most according to claim 1,
It is characterized in that: in described step (2), phenolic resin is 19:1 with the weight ratio of rare earth chloride.
The preparation method of a kind of Polyethylene wood plastic composite material the most according to claim 1,
It is characterized in that: in described step (4), alkalization wood powder that polyethylene, step (1) obtain,
The weight of the rare earth phenolic resin that rare earth compatilizer that step (2) obtains, step (3) obtain
Ratio is 100:(80-140): (8-15): (4-9).
The preparation method of a kind of Polyethylene wood plastic composite material the most according to claim 1,
It is characterized in that: in described step (5), the rotating speed of conical double screw extruder is 50rpm.
The preparation side of a kind of Polyethylene wood plastic composite material the most according to claim 1
Method, it is characterised in that: in described step (5), each section of temperature of conical double screw extruder
It is respectively 135 DEG C, 140 DEG C, 145 DEG C, 150 DEG C, 165 DEG C, 185 DEG C, 185 DEG C.
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| CN109627734B (en) * | 2018-12-26 | 2021-02-02 | 上海镎素工业技术有限公司 | Light and corrosion-resistant plastic for pesticide spraying unmanned aerial vehicle shell and preparation method thereof |
| CN112606262B (en) * | 2020-12-04 | 2021-11-12 | 界首市天隆塑业科技有限公司 | Processing treatment process of waste plastic |
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| CN101602871A (en) * | 2009-06-30 | 2009-12-16 | 东北林业大学 | Be used for Wood-plastic composite powder of selective laser sintering rapid forming and preparation method thereof |
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