CN109320816A - A kind of polyethylene wood plastic micro foaming composite material and preparation method thereof - Google Patents
A kind of polyethylene wood plastic micro foaming composite material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of polyethylene wood plastic micro foaming composite materials, are prepared by the chemical foaming agent of 97 ~ 98wt% Polyethylene wood plastic composite material and surplus；Wherein the Polyethylene wood plastic composite material is prepared by polyethylene, compatilizer, modified plant fibers, crosslinking agent, antioxidant, lubricant and other auxiliary agents.Hydrophobic modification is carried out to plant fibre surface, the absorption to hydrone is effectively reduced, reduces the water absorption rate of material；It is that PE generation is crosslinked by crosslinking agent cumyl peroxide, forms reticular structure between segment, it is high to obtain crosslinking degree, the biggish melt of viscosity, to be coated to gas core, the growth of bubble is effectively fettered, the polyethylene wood plastic micro foaming composite material of dense uniform is obtained.
Description
Technical field
The present invention relates to Wood-plastic material fields, and in particular to a kind of polyethylene wood plastic micro foaming composite material and its preparation side
Method.
Background technique
Wood plastic composite is to pass through extruding, injection molding or compacting etc. using thermoplastic and plant fiber as primary raw material
A kind of new green environment protection profile material prepared by mode has long service life, excellent in mechanical performance, renewable, at low cost, easy
The features such as processing, similar wood appearance, alternative natural timber is widely used in furniture, building, transportation and packing, automotive material
Equal fields, in recent years by the concern of researcher.Plant fiber is made of cellulose, hemicellulose, lignin etc. and containing big
The polar hydroxyl groups functional group of amount shows strong polarity and hydrophily, poor hydrophobicity.When plant fiber is added to resin base
In body, so that material easily absorbs water to generate a series of problems, such as wood plastic composite significant, water suction by water suction deformation
Mechanical property is remarkably decreased afterwards, resistance to fungal decay reduced performance, and wood powder is perishable in material, and the materials'use service life greatly shortens.
In the preparation process of wood plastic composite, usually foaming agent is introduced into wood moulding matrix and forms 10~100 μm
The features such as micropore not only assigns material high specific strength, sound-insulating and heat-insulating, moreover it is possible to reduce density of material, effectively saving material, reduce at
This.As the advantage of loss of weight drop originally is rooted in the hearts of the people, for lightweighting materials by favor, fine foaming wood plastic composite materials development prospect is wide
It is wealthy.However when preparing polyethylene fine foaming wood plastic composite materials, since polythene PE has crystalline texture, resin melt is more than
Viscosity sharply declines after fusing point, and the gas melt that when foaming generates causes to rupture, and easily abscess is caused to collapse in process, steeps
The problems such as pore size distribution is uneven restricts foaming wood-plastic composite wood to influence the mechanical performance of PE base foam wood/plastic composite material
The application of material.
Summary of the invention
In order to solve the above technical problems, The present invention provides a kind of polyethylene wood plastic micro foaming composite material and its preparations
Method, the polyethylene wood plastic micro foaming composite material have many advantages, such as that low water absorption, density are small, uniform foam cell is fine and closely woven, at low cost.
The present invention to achieve the goals above, using following technical scheme:
A kind of polyethylene wood plastic micro foaming composite material, by the change of 97~98wt% Polyethylene wood plastic composite material and surplus
Foaming agent is learned to be prepared；
Wherein, the Polyethylene wood plastic composite material is prepared by weight by following raw materials according:
Further scheme, the chemical foaming agent are answering for sodium bicarbonate and low density polyethylene (LDPE) with the chemical foaming agent
With object.
Further scheme, the polyethylene are linear low density polyethylene, in low density polyethylene (LDPE), high density polyethylene (HDPE)
At least one.
Further scheme, the modified plant fibers are made by plant fiber by modifier modification.
Preferably, the plant fiber be sisal hemp, flax, jute, Chinese fiber crops, wood powder, bamboo powder, chaff powder, in straw powder
It is at least one；The modifying agent be heptadecafluorodecyl triethoxysilane, ten trifluoro octyl trimethoxy silanes at least one
Kind.
Preferably, the crosslinking agent is cumyl peroxide.
Further scheme, the compatilizer are maleic anhydride grafted polyethylene, maleic anhydride inoculated polypropylene, ethylene-
At least one of acetate ethylene copolymer, ethylene-acrylic acid copolymer；
The antioxidant is Hinered phenols antioxidant, in thiosulfates kind antioxidant, phosphite ester antioxidant
It is at least one；
The lubricant is polyethylene wax, polypropylene wax, EVA wax, calcium stearate, zinc stearate, ethylene stearic bicine diester
At least one of amine, paraffin and oxidized polyethylene wax；
Other described auxiliary agents be UV absorbers, finishing agent, light stabilizer, antistatic agent or colorant extremely
Few one kind.
Preferably, the Hinered phenols antioxidant is antioxidant 1010, and the thiosulfates kind antioxidant is antioxygen
Agent DLTP, the phosphite ester antioxidant are irgasfos 168.
Another object of the present invention provides a kind of preparation method of polyethylene wood plastic micro foaming composite material, including following
Step:
(1) preparation of modified plant fibers: drying plant fiber, guarantee the water content of plant fiber 1% hereinafter, according to
Parts by weight weigh 92~97 parts of plant fibers, 3~8 parts of modifying agent, and 800~1200mL ethyl alcohol, ultrapure water and glacial acetic acid is added
In mixed solution, 10~30min is stirred at room temperature, is warming up to 50~60 DEG C of constant temperature and stirs 4~8h, dehydrated alcohol is used in centrifuge separation
Washing, the product grinding after the product centrifugation after washing after 50~80 DEG C of 24~48h of vacuum drying, drying is spare, finally
Obtain modified plant fibers；
(2) preparation of Polyethylene wood plastic composite material: according to the proportion by polyethylene, compatilizer, crosslinking agent, antioxidant, profit
Lubrication prescription, other auxiliary agents mix in a high speed mixer, and mixture is put into the main feeding hopper of parallel dual-screw extruding machine, press simultaneously
Step (1) modified plant fibers are weighed according to ratio to be added in side feed hopper, by melting extrusion, are granulated, polyethylene wood is made
Plastic composite materials；
(3) preparation of polyethylene wood plastic micro foaming composite material: by the Polyethylene wood plastic composite material of 97~98%wt with
The chemical foaming agent of surplus is added in injection molding machine after mixing, and the molding of progress fretting map is prepared poly- under the conditions of twice-die-opening
Ethylene Wood plastic micro foaming composite material.
Preferably, ethyl alcohol, ultrapure water and glacial acetic acid mixed solution each component volume ratio are ethyl alcohol in the step (1): super
Pure water: glacial acetic acid 90:8:2；
The extrusion temperature of double screw extruder is 130~150 DEG C in the step (2), and screw speed is 350~400r/
Min, vacuum degree are -0.06~-0.08MPa；
The injection temperature of injection molding machine is 145~165 DEG C in the step (3).
Compared with the prior art, the present invention has the following beneficial effects:
(1) chemical foaming agent used in the present invention is coated with the low density polyethylene (LDPE) of sodium bicarbonate for inside.It reacted
Using sodium bicarbonate as gas source in journey, dispersion generates carbon dioxide, and no pollution to the environment belongs to environmentally friendly foaming agent, simultaneously
Using low density polyethylene (LDPE) as carrier, it is easy to uniformly disperse in resin, has splendid compatibility with composite material, promote gas source
The fabulous nucleating effect in resin matrix.
(2) plant fiber modifying agent, which uses, contains long-chain matrix, the big heptadecafluorodecyl triethoxysilane of molecular weight, ten
Trifluoro octyl trimethoxy silane, silane hydrolyzate are reacted with plant fibre surface, and long-chain matrix is intertwine with each other with polyethylene segment,
Fluorine-containing functional group is promoted to be grafted to plant fibre surface, it is free to reduce plant fibre surface using the hydrophobic character of fluorine-containing functional group
Can, reduce hydrone in the absorption of plant fibre surface, to realize the hydrophobically modified to plant fiber, then effectively drops
The water absorption rate of oligomerisation of ethylene wood plastic composite.
(3) it is that crosslinking agent is crosslinked polyethylene generation by cumyl peroxide, forms reticular structure between segment, obtain
Crosslinking degree height, the biggish melt of viscosity are obtained, to coat to gas core, the growth of bubble is effectively fettered, it is equal to obtain densification
Even polyethylene wood plastic micro foaming composite material.
(4) in the preparation process of Polyethylene wood plastic composite material, modified plant fibers are added in side feed hopper, are led to
The mode of side feed addition is crossed to reduce fiber degradation in process and shred, largely retains its fibre length,
To improve the mechanical strength of composite material.
Specific embodiment
Technical solution of the present invention is understood in order to clearer, and the present invention is made into one below with reference to specific embodiment
Step detailed description.
Embodiment 1
Polyethylene wood plastic micro foaming composite material is prepared by weight by following raw materials according in the present embodiment:
Polyethylene wood plastic micro foaming composite material is prepared according to the following steps:
(1) preparation of modified plant fibers: drying bamboo powder guarantees the water content of bamboo powder 1% hereinafter, weighing by weight
It is ethyl alcohol: ultrapure water: glacial acetic acid=90:8:2 that 800mL volume ratio, which is added, in 97 parts of bamboo powders, 3 parts of heptadecafluorodecyl triethoxysilanes
Solution in, 10min is stirred at room temperature, after being warming up to 50 DEG C constant temperature stir 4h, centrifuge separation, washed, will be washed with dehydrated alcohol
It is dried in vacuo after product centrifugation afterwards at 50 DEG C for 24 hours, the product grinding after drying is spare, finally obtains modified bamboo powder；
(2) preparation of Polyethylene wood plastic composite material: according to the proportion by low density polyethylene (LDPE), high density polyethylene (HDPE), Malaysia
Anhydride grafted lldpe, the different benzene of peroxidating two, antioxidant 1010, irgasfos 168 and polyethylene wax mix in a high speed mixer,
Mixture is put into the main feeding hopper of parallel dual-screw extruding machine, while proportionally weighing step (1) modified bamboo powder and being added
Into side feed hopper, by melting extrusion, it is granulated, Polyethylene wood plastic composite material is made；Wherein, the extrusion temperature of extruder is
130 DEG C, screw speed 350r/min, vacuum degree is -0.06MPa；
(3) preparation of polyethylene wood plastic micro foaming composite material: by the Polyethylene wood plastic composite material and 2wt% of 98wt%
Chemical foaming agent be added in injection molding machine after mixing, under the conditions of twice-die-opening carry out fretting map molding prepares polyethylene
Wood plastic micro foaming composite material, wherein the chemical foaming agent is the compound of sodium bicarbonate and low density polyethylene (LDPE), injection molding
The injection temperature of machine is 145 DEG C.
Embodiment 2
Polyethylene wood plastic micro foaming composite material is prepared by weight by following raw materials according in the present embodiment:
Polyethylene wood plastic micro foaming composite material is prepared according to the following steps:
(1) preparation of modified plant fibers: drying wood powder guarantees the water content of wood powder 1% hereinafter, weighing by weight
It is ethyl alcohol that 1000mL volume ratio, which is added, in 92 parts of wood powders, 8 parts of silane: ultrapure water: in glacial acetic acid=90:8:2 solution, being stirred at room temperature
20min, constant temperature stirs 6h after being warming up to 55 DEG C, and centrifuge separation is washed with dehydrated alcohol, 65 after the product after washing is centrifuged
DEG C vacuum drying 36h, it is dry after product grinding it is spare, finally obtain modified wood powder；
(2) preparation of Polyethylene wood plastic composite material: according to the proportion by linear low density polyethylene, high density polyethylene (HDPE),
Ethylene-vinyl acetate copolymer, the different benzene of peroxidating two, antioxidant 1010, irgasfos 168 and calcium stearate are in a high speed mixer
Mixture is put into the main feeding hopper of parallel dual-screw extruding machine, while proportionally weighing step (1) modified wood powder by mixing
It is added in side feed hopper, by melting extrusion, is granulated, Polyethylene wood plastic composite material is made；Wherein, the extrusion temperature of extruder
Degree is 140 DEG C, screw speed 380r/min, and vacuum degree is -0.07MPa；
(3) preparation of polyethylene wood plastic micro foaming composite material: by the Polyethylene wood plastic composite material and 3wt% of 97wt%
Chemical foaming agent be added in injection molding machine after mixing, under the conditions of twice-die-opening carry out fretting map molding prepares polyethylene
Wood plastic micro foaming composite material, wherein the chemical foaming agent is the compound of sodium bicarbonate and low density polyethylene (LDPE), injection molding
The injection temperature of machine is 155 DEG C.
Embodiment 3
Polyethylene wood plastic micro foaming composite material is prepared by weight by following raw materials according in the present embodiment:
Polyethylene wood plastic micro foaming composite material is prepared according to the following steps:
(1) preparation of modified plant fibers: drying wood powder guarantees the water content of wood powder 1% hereinafter, claiming in parts by weight
Taking 95 parts of wood powders, 5 parts of heptadecafluorodecyl triethoxysilanes that 1200mL volume ratio is added is ethyl alcohol: ultrapure water: glacial acetic acid=90:
In the solution of 8:2,30min is stirred at room temperature, constant temperature stirs 8h after being warming up to 60 DEG C, and centrifuge separation is washed with dehydrated alcohol, will be washed
Product grinding after product centrifugation after washing after 80 DEG C of vacuum drying 48h, drying is spare, finally obtains modified wood powder；
(2) preparation of Polyethylene wood plastic composite material: according to the proportion by linear low density polyethylene, low density polyethylene (LDPE),
Ethylene-vinyl acetate copolymer, the different benzene of peroxidating two, anti-oxidant DLTP, irgasfos 168, paraffin, UV absorbers, light are steady
Determine agent and colorant mixes in a high speed mixer, mixture is put into the main feeding hopper of parallel dual-screw extruding machine, simultaneously
It proportionally weighs step (1) modified wood powder to be added in side feed hopper, by melting extrusion, is granulated, polyethylene wood-plastic is made
Composite material；Wherein, the extrusion temperature of extruder is 150 DEG C, screw speed 400r/min, and vacuum degree is -0.08MPa；
(3) preparation of polyethylene wood plastic micro foaming composite material: by the Polyethylene wood plastic composite material and 3wt% of 97wt%
Chemical foaming agent be added in injection molding machine after mixing, under the conditions of twice-die-opening carry out fretting map molding prepares polyethylene
Wood plastic micro foaming composite material, wherein the chemical foaming agent is the compound of sodium bicarbonate and low density polyethylene (LDPE), injection molding
The injection temperature of machine is 165 DEG C.
Comparative example 1
Polyethylene wood plastic micro foaming composite material is prepared by weight by following raw materials according in this comparative example:
Polyethylene wood plastic micro foaming composite material is prepared according to the following steps:
(1) preparation of Polyethylene wood plastic composite material: according to the proportion by linear low density polyethylene, high density polyethylene (HDPE),
Ethylene-vinyl acetate copolymer, the different benzene of peroxidating two, antioxidant 1010, irgasfos 168 and calcium stearate are in a high speed mixer
Mixture is put into the main feeding hopper of parallel dual-screw extruding machine, while weighing wood powder in proportion and being added to side feed material by mixing
In bucket, by melting extrusion, it is granulated, Polyethylene wood plastic composite material is made；Wherein, the extrusion temperature of extruder is 140 DEG C, spiral shell
Bar revolving speed is 380r/min, and vacuum degree is -0.07MPa；
(2) preparation of polyethylene wood plastic micro foaming composite material: by the Polyethylene wood plastic composite material and 3wt% of 97wt%
Chemical foaming agent be added in injection molding machine after mixing, under the conditions of twice-die-opening carry out fretting map molding prepares polyethylene
Wood plastic micro foaming composite material, wherein the chemical foaming agent is the compound of sodium bicarbonate and low density polyethylene (LDPE), injection molding
The injection temperature of machine is 155 DEG C.
Comparative example 2
Polyethylene wood plastic micro foaming composite material is prepared by weight by following raw materials according in this comparative example:
Polyethylene wood plastic micro foaming composite material is prepared according to the following steps:
(1) preparation of modified plant fibers: drying wood powder guarantees the water content of wood powder 1% hereinafter, claiming according to parts by weight
Taking 92 parts of wood powders, 8 parts of silane that 1000mL volume ratio is added is ethyl alcohol: ultrapure water: in glacial acetic acid=90:8:2 solution, room temperature is stirred
Mix 20min, after being warming up to 55 DEG C constant temperature stir 6h, centrifuge separation, washed with dehydrated alcohol, by after washing product centrifugation after
65 DEG C of vacuum drying 36h, the product grinding after drying is spare, finally obtains modified wood powder；
(2) preparation of Polyethylene wood plastic composite material: according to the proportion by linear low density polyethylene, high density polyethylene (HDPE),
Modified wood powder, ethylene-vinyl acetate copolymer, the different benzene of peroxidating two, antioxidant 1010, irgasfos 168 and calcium stearate are in height
It mixes in fast mixing machine, by the main feeding hopper of mixture investment parallel dual-screw extruding machine, by melting extrusion, is granulated, system
Obtain Polyethylene wood plastic composite material；Wherein, the extrusion temperature of extruder is 140 DEG C, screw speed 380r/min, vacuum degree
For -0.07MPa；
(3) preparation of polyethylene wood plastic micro foaming composite material: by the Polyethylene wood plastic composite material and 3wt% of 97wt%
Chemical foaming agent be added in injection molding machine after mixing, under the conditions of twice-die-opening carry out fretting map molding prepares polyethylene
Wood plastic micro foaming composite material, wherein the chemical foaming agent is the compound of sodium bicarbonate and low density polyethylene (LDPE), injection molding
The injection temperature of machine is 155 DEG C.
Comparative example 3
Polyethylene wood plastic micro foaming composite material is prepared by weight by following raw materials according in the present embodiment:
Polyethylene wood plastic micro foaming composite material is prepared according to the following steps:
(1) preparation of modified plant fibers: drying wood powder guarantees the water content of wood powder 1% hereinafter, claiming according to parts by weight
Taking 92 parts of wood powders, 8 parts of silane that 1000mL volume ratio is added is ethyl alcohol: ultrapure water: in glacial acetic acid=90:8:2 solution, room temperature is stirred
Mix 20min, after being warming up to 55 DEG C constant temperature stir 6h, centrifuge separation, washed with dehydrated alcohol, by after washing product centrifugation after
65 DEG C of vacuum drying 36h, the product grinding after drying is spare, finally obtains modified wood powder；
(2) preparation of Polyethylene wood plastic composite material: according to the proportion by linear low density polyethylene, high density polyethylene (HDPE),
Ethylene-vinyl acetate copolymer, antioxidant 1010, irgasfos 168 and calcium stearate mix in a high speed mixer, by mixture
It puts into the main feeding hopper of parallel dual-screw extruding machine, while proportionally weighing step (1) modified wood powder and being added to side feed material
In bucket, by melting extrusion, it is granulated, Polyethylene wood plastic composite material is made；Wherein, the extrusion temperature of extruder is 140 DEG C, spiral shell
Bar revolving speed is 380r/min, and vacuum degree is -0.07MPa；
(3) preparation of polyethylene wood plastic micro foaming composite material: by the Polyethylene wood plastic composite material and 3wt% of 97wt%
Chemical foaming agent be added in injection molding machine after mixing, under the conditions of twice-die-opening carry out fretting map molding prepares polyethylene
Wood plastic micro foaming composite material, wherein the chemical foaming agent is the compound of sodium bicarbonate and low density polyethylene (LDPE), injection molding
The injection temperature of machine is 155 DEG C.
By the main physical property of polyethylene wood plastic micro foaming composite material made from above-described embodiment 1~3 and comparative example 1~2
Index according to coherent detection standard testing, abscess average diameter, density, tensile strength, notch impact strength, bending strength,
Bending modulus, the examination criteria of water absorption rate and testing result are as shown in the table:
Wherein, water absorption rate measuring method: 5 diameters of every group of selection are 100mm, with a thickness of the injection molding disk of 2mm, at 60 DEG C
It is cooling to claim its initial mass (m in baking oven after dry 4h0)；Then sample is immersed in 23 DEG C of ultrapure water, is taken after placing 10 days
Out, the water that specimen surface attachment is sucked with filter paper, claims its quality (mt), it calculates gained water absorption rate and is averaged.Water absorption rate (X)
X=(m is calculated as follows0-mt)/m0× 100%, in formula: X is water absorption rate, %；mtFor quality after water suction, g；m0For the antecedent that absorbs water
Amount, g.
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Abscess average diameter (μm) | 72 | 65 | 59 | 156 | 123 | 176 |
| Density g/cm3 | 0.741 | 0.752 | 0.793 | 0.853 | 0.813 | 0.877 |
| Tensile strength (MPa) | 17 | 18.63 | 22.6 | 16.3 | 17.1 | 17.5 |
| Notch impact strength (KJ/m2) | 4.3 | 6.1 | 5.5 | 2.3 | 3.6 | 4 |
| Bending strength (MPa) | 19.6 | 20.8 | 21.8 | 15.6 | 17.5 | 17.8 |
| Bending modulus (MPa) | 968 | 1044 | 1114 | 604 | 780 | 772 |
| Water absorption rate | 1.49 | 1.38 | 1.26 | 6.58 | 2.5 | 2.3 |
Note: the above detection project uses examination criteria for density GB-T1033.1-2008, stretches slight GB/T1040-
2006, notch impact strength GB/T1043-1993, bending strength GB/T9341-2000, bending modulus GB/T9341-2000.
According to above table, by embodiment 2 and 1 Comparative result of comparative example it is found that being carried out in embodiment 2 to plant fiber
Modification, modifies plant fiber using the modifying agent of long chain fluorine-containing functional group, reduces plant fibre surface free energy, subtracts
Lack hydrone in the absorption of plant fibre surface, effectively reduces the water absorption rate of Polyethylene wood plastic composite material；
By embodiment 2 and 2 Comparative result of comparative example it is found that modified plant fibers are using side feed addition in embodiment 2
Mode keeps fibre length to greatest extent, and fiber is intertwine with each other, and forms fine and close network-like structure, it is strong to improve composite material
Degree；
By embodiment 2 and 3 Comparative result of comparative example it is found that being added to crosslinking agent cumyl peroxide in embodiment 2,
PE promotes resin to be crosslinked by cumyl peroxide, forms reticular structure, and melt viscosity increases, coats, have to gas
The growth of bound gas is imitated, the abscess of composite material is small and fine and smooth；
In conclusion composite material of the invention has, water absorption rate is low, density is small, excellent in mechanical performance, uniform foam cell are thin
The advantages that greasy.
This hair can be understood and applied the above description of the embodiments is intended to facilitate those skilled in the art
It is bright.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to implementations here
Example, those skilled in the art's announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be
Within protection scope of the present invention.
Claims (10)
1. a kind of polyethylene wood plastic micro foaming composite material, it is characterised in that: by 97 ~ 98wt% Polyethylene wood plastic composite material and
The chemical foaming agent of surplus is prepared；
Wherein, the Polyethylene wood plastic composite material is prepared by weight by following raw materials according:
65 ~ 87 parts of polyethylene,
3 ~ 5 parts of compatilizer,
10 ~ 30 parts of modified plant fibers,
0.5 ~ 1 part of crosslinking agent,
0.2 ~ 0.4 part of antioxidant,
0.5 ~ 1 part of lubricant,
0 ~ 2 part of other auxiliary agents.
2. polyethylene wood plastic micro foaming composite material as described in claim 1, it is characterised in that: the chemical foaming agent is carbon
The compound of sour hydrogen sodium and low density polyethylene (LDPE).
3. polyethylene wood plastic micro foaming composite material as described in claim 1, it is characterised in that: the polyethylene is linear
At least one of low density polyethylene (LDPE), low density polyethylene (LDPE), high density polyethylene (HDPE).
4. polyethylene wood plastic micro foaming composite material as described in claim 1, it is characterised in that: the modified plant fibers
It is made by plant fiber by modifier modification.
5. polyethylene wood plastic micro foaming composite material as claimed in claim 4, it is characterised in that: the plant fiber is sword
At least one of fiber crops, flax, jute, Chinese fiber crops, wood powder, bamboo powder, chaff powder, straw powder；The modifying agent is 17 fluorine decyls
At least one of triethoxysilane, ten trifluoro octyl trimethoxy silanes.
6. polyethylene wood plastic micro foaming composite material as described in claim 1, it is characterised in that: the crosslinking agent is peroxide
Change diisopropylbenzene (DIPB).
7. polyethylene wood plastic micro foaming composite material as described in claim 1, it is characterised in that: the compatilizer is Malaysia
Anhydride grafted lldpe, maleic anhydride inoculated polypropylene, ethylene-vinyl acetate copolymer, in ethylene-acrylic acid copolymer extremely
Few one kind；
The antioxidant be Hinered phenols antioxidant, thiosulfates kind antioxidant, in phosphite ester antioxidant at least
It is a kind of；
The lubricant is polyethylene wax, polypropylene wax, EVA wax, calcium stearate, zinc stearate, ethylene bis stearamide, stone
At least one of wax, oxidized polyethylene wax；
Other described auxiliary agents be UV absorbers, finishing agent, light stabilizer, antistatic agent, in colorant at least
It is a kind of.
8. polyethylene wood plastic micro foaming composite material as claimed in claim 7, it is characterised in that: the Hinered phenols antioxygen
Agent is antioxidant 1010, and the thiosulfates kind antioxidant is anti-oxidant DLTP, and the phosphite ester antioxidant is antioxygen
Agent 168.
9. such as the preparation method of the described in any item polyethylene wood plastic micro foaming composite materials of claim 1 ~ 8, it is characterised in that:
The following steps are included:
(1) preparation of modified plant fibers: drying plant fiber guarantees the water content of plant fiber 1% hereinafter, by weight
92 ~ 97 parts of plant fibers, 3 ~ 8 parts of modifying agent are weighed, the mixed solution of 800 ~ 1200mL ethyl alcohol, ultrapure water and glacial acetic acid is added
In, 10 ~ 30min is stirred at room temperature, constant temperature stirs 4 ~ 8h after being warming up to 50 ~ 60 DEG C, and centrifuge separation is washed with dehydrated alcohol, will be washed
Product grinding after product centrifugation after washing after 50 ~ 80 DEG C of 24 ~ 48h of vacuum drying, drying is spare, finally obtains improved plant
Fiber；
(2) preparation of Polyethylene wood plastic composite material: according to the proportion by polyethylene, compatilizer, crosslinking agent, antioxidant, lubricant,
Other auxiliary agents mix in a high speed mixer, mixture put into parallel dual-screw extruding machine main feeding hopper in, while according to than
Example weighs step (1) modified plant fibers and is added in side feed hopper, by melting extrusion, is granulated, it is multiple that polyethylene wood-plastic is made
Condensation material；
(3) preparation of polyethylene wood plastic micro foaming composite material: by the Polyethylene wood plastic composite material of 97 ~ 98%wt and surplus
Chemical foaming agent is added in injection molding machine after mixing, and fretting map molding is carried out under the conditions of twice-die-opening and prepares polyethylene wood
Plastic micro foaming composite material.
10. preparation method as claimed in claim 9, it is characterised in that: ethyl alcohol, ultrapure water and glacial acetic acid in the step (1)
Mixed solution each component volume ratio is ethyl alcohol: ultrapure water: glacial acetic acid 90:8:2；
The extrusion temperature of double screw extruder is 130 ~ 150 DEG C in the step (2), and screw speed is 350 ~ 400r/min, very
Reciprocal of duty cycle is -0.06 ~ -0.08MPa；
The injection temperature of injection molding machine is 145 ~ 165 DEG C in the step (3).
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110283469A (en) * | 2019-06-10 | 2019-09-27 | 重庆市久三建材有限公司 | A kind of outdoor durable wood moulding anticorrosion floor processing method |
| CN110387014A (en) * | 2019-07-12 | 2019-10-29 | 江苏恒峰线缆有限公司 | A kind of efficient compatilizer for polyolefin-based wood plastic composite |
| CN111849054A (en) * | 2020-08-04 | 2020-10-30 | 吴光辉 | Antibiotic mould proof bamboo wood fibre integrated wallboard |
| AT523528A4 (en) * | 2020-07-27 | 2021-09-15 | Haubner Alexander | Wood-plastic composite |
| CN115304851A (en) * | 2022-09-21 | 2022-11-08 | 福建亚通新材料科技股份有限公司 | Palm fiber reinforced micro-foaming pedal material and preparation method thereof |
| CN116176086A (en) * | 2023-04-24 | 2023-05-30 | 济南市阿波罗木塑复合材料有限公司 | Wood-plastic micro-foaming composite material for cold chain container board and preparation method thereof |
| CN116376142A (en) * | 2023-04-12 | 2023-07-04 | 河北德容塑料包装制品股份有限公司 | Micro-foaming PE material, preparation method and packaging cover |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613510A (en) * | 2009-07-16 | 2009-12-30 | 浙江大学 | Wood plastic composite and preparation method thereof |
| CN103554626A (en) * | 2013-11-06 | 2014-02-05 | 福建农林大学 | Micro-foaming polyethylene-matrix wood-plastic composite material and preparation method thereof |
| CN108178870A (en) * | 2017-12-25 | 2018-06-19 | 会通新材料股份有限公司 | A kind of injection grade polypropylene wood plastic micro foaming composite material and preparation method thereof |
| CN108192200A (en) * | 2017-12-19 | 2018-06-22 | 会通新材料股份有限公司 | A kind of over-branched polyamidoamine modified plant fibers reinforced polypropylene micro-foaming material and preparation method thereof |
-
2018
- 2018-07-27 CN CN201810846703.4A patent/CN109320816A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613510A (en) * | 2009-07-16 | 2009-12-30 | 浙江大学 | Wood plastic composite and preparation method thereof |
| CN103554626A (en) * | 2013-11-06 | 2014-02-05 | 福建农林大学 | Micro-foaming polyethylene-matrix wood-plastic composite material and preparation method thereof |
| CN108192200A (en) * | 2017-12-19 | 2018-06-22 | 会通新材料股份有限公司 | A kind of over-branched polyamidoamine modified plant fibers reinforced polypropylene micro-foaming material and preparation method thereof |
| CN108178870A (en) * | 2017-12-25 | 2018-06-19 | 会通新材料股份有限公司 | A kind of injection grade polypropylene wood plastic micro foaming composite material and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 丁浩 主编: "《塑料工业实用手册 第二版 中册》", 31 August 2000, 化学工业出版社 * |
| 王加龙 主编: "《塑料挤出制品生产工艺手册》", 31 January 2002, 中国轻工业出版社 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110283469A (en) * | 2019-06-10 | 2019-09-27 | 重庆市久三建材有限公司 | A kind of outdoor durable wood moulding anticorrosion floor processing method |
| CN110387014A (en) * | 2019-07-12 | 2019-10-29 | 江苏恒峰线缆有限公司 | A kind of efficient compatilizer for polyolefin-based wood plastic composite |
| AT523528A4 (en) * | 2020-07-27 | 2021-09-15 | Haubner Alexander | Wood-plastic composite |
| AT523528B1 (en) * | 2020-07-27 | 2021-09-15 | Haubner Alexander | Wood-plastic composite |
| CN111849054A (en) * | 2020-08-04 | 2020-10-30 | 吴光辉 | Antibiotic mould proof bamboo wood fibre integrated wallboard |
| CN115304851A (en) * | 2022-09-21 | 2022-11-08 | 福建亚通新材料科技股份有限公司 | Palm fiber reinforced micro-foaming pedal material and preparation method thereof |
| CN116376142A (en) * | 2023-04-12 | 2023-07-04 | 河北德容塑料包装制品股份有限公司 | Micro-foaming PE material, preparation method and packaging cover |
| CN116376142B (en) * | 2023-04-12 | 2024-06-25 | 河北德容塑料包装制品股份有限公司 | Micro-foaming PE material, preparation method and packaging cover |
| CN116176086A (en) * | 2023-04-24 | 2023-05-30 | 济南市阿波罗木塑复合材料有限公司 | Wood-plastic micro-foaming composite material for cold chain container board and preparation method thereof |
| CN116176086B (en) * | 2023-04-24 | 2023-08-08 | 济南市阿波罗木塑复合材料有限公司 | Wood-plastic micro-foaming composite material for cold chain container board and preparation method thereof |
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