CN107189216A - The formula and its preparation method and its manufacture device of Wood-plastic profiles - Google Patents
The formula and its preparation method and its manufacture device of Wood-plastic profiles Download PDFInfo
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- CN107189216A CN107189216A CN201710519043.4A CN201710519043A CN107189216A CN 107189216 A CN107189216 A CN 107189216A CN 201710519043 A CN201710519043 A CN 201710519043A CN 107189216 A CN107189216 A CN 107189216A
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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
- 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92885—Screw or gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; Nozzle zone
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
Abstract
Present invention relates particularly to a kind of formula of Wood-plastic profiles and its preparation method and its manufacture device, formula is characterised by that the portion rate of each raw material is as follows：100 parts of the PP waste plastics of good fluidity；20 75 parts of wood powder；5 15 parts of toughener；2 10 parts of compatilizer；1 10 parts of lubricant；0.1 1 parts of primary antioxidant；0.1 0.5 parts of auxiliary anti-oxidant；0.02 0.5 parts of light stabilizer；0.1 4 parts of antiseptic；Preparation method is characterised by that step is as follows：1) the PP waste plastics of good fluidity are reclaimed；2) clean, crush, dry；3) wood powder is dried；4) extruding pelletization, 5) extrusion molding；Manufacture device is characterised by including plastic cleaning device, wood powder drying unit, weighing device, mixing device, extruding pelletization device and extrusion molding apparatus, the present invention has that cost is low, durable, long lifespan, the advantage that heat-resist, ultraviolet-resistant capacity is good, hardness is high, load-carrying ability is strong.
Description
Technical field
The invention belongs to wood plastic composite technical field, and in particular to the formula and its preparation method of a kind of Wood-plastic profiles and its
Manufacture device.
Background technology
Wood plastic composite (WPC) is using string as primary raw material (such as wood powder, stalk), at surface active
Through being injected into after being mixed after reason with various plastics (such as polyvinyl chloride, polyethylene, polypropylene), auxiliary agent according to certain ratio
A kind of new composite that the techniques such as type, extrusion molding, compression molding are made, the function admirable of wood plastic composite, makes
With field extensively, beneficial to environmental protection.But current wood plastic composite is mainly shown as there is also some defects：(1) cost
It is high；(2) density is high, usually the 2~4 of timber times；(3) mounting cost of product is of a relatively high (due to the density of composite
It is larger, need to use nailing gun or tapping screw in assembling)；(4) heat resistance and ultraviolet-resistant capacity are poor；(5) product
Hardness and load-carrying ability are poor compared with timber.
The content of the invention
There is density height, installation difficulty, heat resistance and resistance to solving prior art wood plastic composite in the purpose of the present invention
UV resistance is poor, and there is provided a kind of formula of Wood-plastic profiles and its preparation method and its manufacture dress for the defect of hardness and load-carrying ability difference
Put, it uses recycled plastic to make Wood-plastic profiles, and cost is low, durable, long lifespan, with good heat resistance and UV resistant energy
Power, hardness is high, load-carrying ability is strong.
The present invention is achieved by the following technical solution：
I.e. a kind of formula of Wood-plastic profiles, it is characterised in that the portion rate of each raw material is as follows：
Toughener is POE, and compatilizer is PP-g-MAH, and lubricant is PA-02, and primary antioxidant is KY-7910, auxiliary anti-oxidant
For KY-168, light stabilizer is GW-944, and antiseptic is SD-36M.
The PP waste plastics of good fluidity in the present invention, are mainly derived from the substantial amounts of waste plastic packaging of Electronics Factory.Although
Waste plastic is all polypropylene but causes discarded poly- third because the polypropylene trade mark is different or the auxiliary agent of post-production addition is different
Alkene plastics have different properties, therefore waste plastic will be selected with being modified the immediate kind of purpose performance, to save addition
The usage amount of auxiliary agent.The viscosity of various plastifying materials will be approached in formula, to ensure processing fluidity.
In traditional wood plastic composite, Wood flour filled amount is higher, and some link frictional heats cause melt temperature drastically to raise
The degraded of PP molecules can be caused, the extrusion pressure of PP wood plastics composites melt is higher in addition also limit extrusion processing efficiency, thus
Actual amount of the PP resins in WPC product industries is simultaneously little.The present invention is from the PP waste plastics of good fluidity, and wood powder fills out
Charge is not also high.
The toughener of the present invention is good for POE (polyolefin elastomer), POE and PP compatibility, and the dispersiveness in PP is special
Get ready, added in PP after POE, tensile property and bending property decline；Impact property is improved.POE is remarkably improved PP normal temperature
The low-temperature impact resistance of impact property and copolymerization PP.
The compatilizer of the present invention is PP-g-MAH (maleic anhydride inoculated polypropylene), and adding PP-g-MAH can omit to wood
The surface treatment of powder, improves production efficiency.
The lubricant of the present invention is PA-02, and wood plastic composite will realize higher Wood flour filled amount, and have well
Processing characteristics and physical and mechanical properties, in addition to improving the compatibility of matrix and wood material, add a small amount of efficiently rheological lubrication
Agent can enable wood powder rapidly and evenly to disperse in plastic substrate, can not only make melting dispersion mixing and extrusion molding work
Skill is stable, and is conducive to improving product quality, reduction energy consumption and improves production efficiency.PA-02 lubricants are by acid amides and Malaysia
Acid anhydrides grafting class compound composition, efficiently unique lubrication and scattered coupling function can fully soak wood powder and inorganic matter and make for it
It is well dispersed among plastic melt, and amido and maleic anhydride are to organic matter such as wood-fibred, inorganic matter such as talcum powder and calcium powder
Disperse compatible coupling lubricating ability with extraordinary, function is wetting and the scattered fiber of cladding coupling and inorganic matter rather than molten
Solution in PP/PE resins, so improve wood moulding fluidity of molten while, not but not reduction product mechanical property and heat
Deformation temperature, on the contrary physical and mechanical properties increased.It ties up to life than common stearic acid, stearate, paraffin, PE wax bodies
Produce speed, product surface, processing characteristics all improves a lot in terms of product mechanical property, comprehensive raising product can
Processability and performance.
The primary antioxidant of the present invention belongs to antioxidant 1010 for KY-7910, KY-7910, belongs to Hinered phenols, odorless without
Taste, volatility is good, and heat endurance is high, and water-fast and detergent is extracted out, and nondiscolouring is good with polymer compatibility.
The auxiliary anti-oxidant of the present invention is KY-168, and irgasfos 168 has higher heat resistance and anti-extractibility.
The light stabilizer of the present invention is GW-944, and GW-944 belongs to HALS (hindered amine light stabilizer), and HALS is a class
The efficient light stabilizer of good combination property, can be simultaneously by the effect of playing stably of a variety of mechanism.
The antiseptic of the present invention is SD-36M, and harm of the fungi to WPC includes rotten, degraded, mould in WPC superficial growths
Mould spot bred and ultimately formed etc..Fungi can infect and attack WPC, cause its quality mitigate, when serious even shadow
Mechanical performance is rung, shortens the service life of material.SD-36M is the special antiseptic of WPC products, to pressing down mycostatic grow and numerous
Grow extremely effective.In addition the company such as Ciba, Borax, Rohm＆Haas and the Guangdong Di Mei of the country have developed some WPC products
Special antiseptic is readily applicable to the present invention.
The preparation method of Wood-plastic profiles of the present invention, it is characterised in that step is as follows：
1) waste or used plastics are reclaimed, are manually classified using differential-density saparation, the good PP waste plastics of selecting liquidity；
2) the PP waste plastics to good fluidity are cleaned, crushed, being dried, and deliver to feed bin stand-by；
3) wood powder is dried；
4) extruding pelletization, by step 2) in PP waste plastics, step 3) in drying wood powder and auxiliary agent according to proportioning plus
Enter into extruder, extruded by high-temperature fusion by pellet head, granulated by pelleter, blown pellet with cold wind during granulation
Cooling is played, it is stand-by that the pellet after cooling delivers to feed bin；
Each area's temperature of extruder is as follows
Screw speed is 22Hz, and feeding rotating speed is 45rpm, and pelletizing rotating speed is 356rpm；
5) by step 4) made from pellet use incorgruous conical double screw extruder extrusion molding, vacuum cooled during extrusion,
Sizing, 0.04~0.06MPa of vacuum, the type bar traction after sizing, cutting, storage, the hauling speed of hauling machine is than extrusion
The extruded velocity of machine slightly fast 3%~5%, extruder parameter setting is as follows：
Moisture content after PP waste plastics, the wood powder of the present invention are dried is less than 0.5%.
The manufacture device of Wood-plastic profiles of the present invention, it is characterised in that including plastic cleaning device, wood powder drying unit, weigh
Device, mixing device, extruding pelletization device and extrusion molding apparatus are conveyer belt that plastic cleaning device includes being sequentially connected, broken
Broken machine, the first screw feeding machine, cleaning machine, cyclone drying machine, the first vibratory sieve, air blower and the first feed bin, wood powder drying dress
The second screw feeding machine and bipyramid rotary dryer being sequentially connected are set to, weighing device is belt weighing scale, and mixing arrangement is
The 3rd screw feeding machine and high-speed mixer being sequentially connected, extruding pelletization device be sequentially connected the 4th screw feeding machine,
Parallel double-screw extruder, pelleter, the second vibratory sieve and the second feed bin, the bottom of second vibratory sieve are provided with air blower,
Extrusion molding apparatus be sequentially connected the 5th screw feeding machine, conical double screw extruder, Vacuum shaping cooling device, traction
Machine and cutting machine, first feed bin, bipyramid rotary dryer, the bottom of high-speed mixer and the second feed bin are respectively provided with middle conversion
Small handcart, the charging aperture of the 3rd screw feeding machine is located at the lower section of the discharging opening of belt weighing scale.
Each equipment in the manufacture device of the present invention is prior art matured product.
The present invention has that cost is low, durable, long lifespan, and heat-resist, ultraviolet-resistant capacity is good, hardness is high, load-carrying ability
Strong advantage.
1) waste and old recycled plastic and wood powder etc. that the raw material of this product are used compare for virgin material purchase cost than relatively low,
Other wood powder reduces the weight of material as filler in itself, reduces the usage amount of plastics.So as to which cost be substantially reduced.It is logical
Cross the using so that product is ageing-resistant and corrosion-resistant increase of antioxidant and mould inhibitor.
2) make it that the mixed effect of wood powder and resin is more preferable using extrusion board after first granulating, extrusion is more stable, while in advance
The particle first made can also directly be molded other plastic fittings in addition to direct extrusion board so that raw material utilizes more preferably spirit
It is living.
3) a whole set of process units intelligence degree is higher, and human intervention is less, and production efficiency and product stability are obtained
Ensure.
Brief description of the drawings
Fig. 1 is process chart of the invention；
Fig. 2 is the structural representation of manufacture device of the present invention.
As shown in FIG.：101. the disintegrating machine of conveyer belt 102.；103. the first screw feeding machine；104. cleaning machine；105. rotation
Wind drying machine；106. the first vibratory sieve；107. the first air blower；108. the first feed bin；109. trolley；On 201. second spirals
Material machine；202. bipyramid rotary dryers；203. the 3rd screw feeding machines；204. high-speed mixer；205. belt weighing scales；301.
4th screw feeding machine；302. parallel double-screw extruder；303. pelleter；304. second vibratory sieves；305. second feed bins；
306. second air blowers；401. the 5th screw feeding machines；402. conical double screw extruder；403. Vacuum shaping cooling devices；
404. hauling machine；405. cutting machine；406. automatic piling bins.
Embodiment
As shown in Figure 2：Plastic cleaning device includes conveyer belt 101, disintegrating machine 102, the first spiral feeding being sequentially connected
Machine 103, cleaning machine 104, cyclone drying machine 105, the first vibratory sieve 106, the first air blower 107 and the first feed bin 108, wood powder dry
Equipment for drying is the second screw feeding machine 201 and bipyramid rotary dryer 202 being sequentially connected, and weighing device is belt weighing scale
205, mixing arrangement is the 3rd screw feeding machine 204 and high-speed mixer 204 being sequentially connected, and extruding pelletization device is to connect successively
The 4th screw feeding machine 301, parallel double-screw extruder 302, pelleter 303, the second vibratory sieve 304 and the second feed bin connect
305, the bottom of second vibratory sieve 304 is provided with two the second air blowers 306, and extrusion molding apparatus is the 5 be sequentially connected
Screw feeding machine 401, conical double screw extruder 402, Vacuum shaping cooling device 403, hauling machine 404 and cutting machine 405, institute
The bottom for stating the first feed bin, bipyramid rotary dryer, high-speed mixer and the second feed bin is respectively provided with the small handcart 109 of middle conversion,
The charging aperture of 3rd screw feeding machine 203 is located at the lower section of the discharging opening of belt weighing scale 205.
As shown in Figure 1 and Figure 2：The step of during present invention manufacture Wood-plastic profiles, is as follows：
1) waste or used plastics are reclaimed, are manually classified using differential-density saparation, the good PP waste plastics of selecting liquidity；
2) the PP waste plastics of good fluidity enter before cleaning machine 104, are crushed, will crushed in disintegrating machine 102
Sheet material afterwards is quantitatively input in cleaning machine 104 by the first screw feeding machine 103, and the paddle shaft of two reverse rotations is with 20r/
Min rotating speed stirring, conveys material by rinse bath, the vortex of generation rinses the booty on plastic waste material, booty at leisure
Sink to bottom of rinse bath.Clean sheet stock is discharged by auger conveyor after 10~20min, the speed of screw rod is about 8~10m/
min.Most of water is removed in course of conveying, and screw rod send in the cyclone drying machine 105 with 105 DEG C of temperature of feeding and dried, and is dried
Sheet stock afterwards is admitted to the first feed bin 108 after the first vibratory sieve 106 and air blower 107.First vibratory sieve 106 is used to screen
Particle, air blower 107 is used to convey particle.
3) wood powder is quantitatively input in bipyramid rotary dryer 202 by the second screw feeding machine 201, be dried.
4) by 100 parts of the PP waste plastics of good fluidity, 45 parts of 80 mesh wood powder, POE10 parts, 8 parts of PP-g-MAH, PA-02
3 parts, 0.5 part of KY-7910,0.2 part of KY-168,0.2 part of GW-944,1.5 parts of SD-36M weigh by belt weighing scales 205
Afterwards, inputted in high-speed mixer 204 and mixed by the 3rd screw feeding machine 203, high mixer chuck is preheated to 80 DEG C during mixing, plus
Enter PP waste plastics, POE, PP-g-MA, SD-36M of good fluidity, height, which is stirred after 3min, adds the mixed 3min of 80 mesh wood powders height, then divides
Batch adds KY-7910, KY-168, GW-944 height and stirs 3min, is eventually adding the mixed 20~30min of PA-02 height, discharging cooling.It is cold
But input parallel double-screw extruder 302 by the 4th screw feeding machine 301 afterwards to extrude, granulated, cut out by pelleter
The cold front heavy rain that is blown out on the second vibratory sieve 304 by two the second air blowers 306 of pellet, the pellet after cooling enters second
Feed bin 305, each area's temperature of extruder is as follows：
Screw speed is 22Hz, and feeding rotating speed is 45rpm, and pelletizing rotating speed is 356rpm；
In general, the extrusion temperature of wood plastic composite should control more than material plasticizing temperature, the decomposition of material
Below temperature.The feeding section temperature of extruder can not be too high, to prevent high temperature from the non-plastifying fusion of material has just been decomposed.Modeling
Changing the temperature of section and metering section then needs enough height, and higher temperature can ensure the abundant plasticizing of material；But temperature is set
Putting can not be too high, and otherwise melt is because temperature is too high so that the matching of its viscoplasticity is improper, it is possible to cause extrudate in stream
Body shape and granulation below can not be realized.Too high temperature also can decline the heat endurance of material system, and waste the energy,
It is unfavorable for industrialized production, so the setting of temperature in allowed limits answers more lower slightly relatively good.
When the screw speed of extruder is different, residence time of the material in machine barrel is also different, the plastifying fusion of material
Can also there is significant difference with mixed effect, so that the property of product produces difference.When the rotating speed of screw rod is smaller, thing
Expect that the residence time in machine barrel is long, material can sufficiently be plastified and uniformly mixed, but the efficiency comparison of extrusion is low, it is right
It is unfavorable to be operated in industrialization.And when the rotating speed of screw rod is excessive, residence time of the material in machine barrel will be shorter, melt
The effect for melting plasticizing and mixing will be poor, and product can not reach the performance of requirement, and material is due to shearing heating functioin
It is big gelatinization phenomenon easily occur.Therefore while screw speed is improved, to take into account and be matched with cooling system, and avoid causing
Obvious mobile defect.Sign in above reason, this is designed as screw speed for 22Hz, feeding rotating speed is 45rpm.
When the rotating speed of fervent blade is different, institute's pelletizing material it is of different sizes.When the rotating speed of fervent blade is smaller, institute's pelletizing material
It is larger, the extrusion of next step or injection can be produced difficult.When rotating speed is larger, institute's pelletizing material is smaller, consumes energy larger, is unfavorable for production
Industry metaplasia is produced.This secondary design uses pelletizing rotating speed for 356rpm.
5) pellet is inputted into the incorgruous extrusion type article of conical double screw extruder 402 by the 5th screw feeding machine 401, extruded
When pass through Vacuum shaping cooling device 403 carry out vacuum cooled, sizing, 0.04~0.06MPa of vacuum；Type bar after sizing leads to
Cross hauling machine 404 to be drawn, cutting machine 405 is cut, the type bar after cutting is placed on piling bin.
Extruder parameter setting is as follows：
In wood plastic composite extrusion process, the temperature control of extruder is particularly significant.If extrusion temperature is too high, thing
Material is degradable, while too high temperature makes the viscosity of melt relatively low, extrusion pressure is not enough, causes product surface coarse, intensity difference,
Influence extrusion quality.And temperature is too low so that plastics plasticizing is bad, it is impossible to fully wrap up wood powder, can also make the intensity of product by
Influence.Meanwhile, melt fracture is more sensitive to die temperature, too high all to cause melt fracture with too low die temperature.It is suitable
When reduction extruder temperature, improve head pressure, reduce screw speed, can effectively improve the extrusion of wood plastics composite system
Processing characteristics.
From solid conveying theory formula and viscous fluid delivery theoretical formula, it is known that rotating speed is directly proportional to production capacity.
Therefore, production capacity can effectively be increased by improving rotating speed, but wood plastic composite screw speed in plasticizing increase by
Many limitations.For PP/ wood flour composite materials, wood powder is thermal sensitivity, too high screw speed can cause material degraded and
Gelatinization.Meanwhile, screw speed has an effect on residence time and the injection pressure of material.Only meet material plasticization temperature,
On the premise of shear strength, mixing quality and injector power limit, rotating speed could be improved to greatest extent to improve productivity ratio.
Because the wood powder of addition is powder, its structure is fluffy to be difficult to carry out feeding to extruder screw, while plastic substrate
It is added in extruder while preferable mixed system and uniformity can not be formed between wood powder, so in the mistake of charging
The phenomenon of " bridge formation " and " pole " usually occurs in journey.Particularly when containing more moisture in wood powder, this phenomenon is just
Become readily apparent from, it is therefore necessary to which mode and feeding quantity to charging are strictly controlled, using pressure charging in general production
Device and hungry feeding, to ensure the stability of extruder extruded product.
Because a large amount of small molecule volatile substances and moisture that contain in wood powder easily bring defect for wood plastic product, and in wood
Them can not be completely removed during the pretreatment of powder.For wood plastic composite extrude extruder to gas extraction system
It is required that confidential higher than common Screw Extrusion.If the exhaust effect of extruder is better, the wood plastic product quality of extrusion will
It is better, if multistage exhaust can be carried out to extruder the need for special.
The control of vacuum can directly affect cooling and shaping operation below and the surface quality of Wood-plastic profiles product.If
Vacuum is excessive, will increase the traction load of hauling machine, or even can also postpone or hinder parison to enter vacuum shaping sleeve, leads
Die orifice is caused to be blocked between shaping cover entrance because of buildup；If vacuum is too low, vacuum shaping sleeve does not reach enough suction, then
Cause parison to be molded or occur serious deformation, products appearance quality and dimension precision requirement, ordinary circumstance can not be realized
The vacuum of lower Wood-plastic profiles is about controlled in 0.04~0.06MPa.
Hauling speed can directly affect wall thickness, dimensional tolerance, presentation quality and the performance of wood plastic composite, therefore it is required that
The hauling speed of hauling machine has to stabilization, and to match with the extruded velocity of Wood-plastic profiles.If the extrusion of extruder
Excessive velocities, can produce higher heat because of friction, raise the temperature of melt, such as fruit product cannot sufficiently cool down to go out
Existing flexural deformation, and increase the longitudinal contraction rate of product；If the extruded velocity of extruder is too slow, material can be extended in barrel
Interior heated time, material is heated for a long time can reduce the mechanical property of product, and serious meeting causes material to decompose.Traction
The hauling speed of machine is slightly faster by 3%~5% than the extruded velocity of extruder, while the die swelling of parison is overcome, makes wood
Product is moulded in shaping equipment by appropriate stretching, and is conducive to improving the quality of Wood-plastic profiles product.
Claims (4)
1. a kind of formula of Wood-plastic profiles, it is characterised in that the portion rate of each raw material is as follows：
Toughener is POE, and compatilizer is PP-g-MAH, and lubricant is PA-02, and primary antioxidant is KY-7910, and auxiliary anti-oxidant is
KY-168, light stabilizer is GW-944, and antiseptic is SD-36M.
2. a kind of preparation method of Wood-plastic profiles according to claim 1, it is characterised in that step is as follows：
1) waste or used plastics are reclaimed, are manually classified using differential-density saparation, the good PP waste plastics of selecting liquidity；
2) the PP waste plastics to good fluidity are cleaned, crushed, being dried, and deliver to feed bin stand-by；
3) wood powder is dried；
4) extruding pelletization, by step 2) in PP waste plastics, step 3) in drying wood powder and auxiliary agent be added to according to proportioning
In extruder, extruded, granulated by pelleter by pellet head by high-temperature fusion, with cold wind blown afloat pellet during granulation cold
But, the pellet after cooling delivers to that feed bin is stand-by, and each area's temperature of extruder is as follows
Screw speed is 22Hz, and feeding rotating speed is 45rpm, and pelletizing rotating speed is 356rpm；
5) by step 4) made from pellet use incorgruous conical double screw extruder extrusion molding, vacuum cooled during extrusion, sizing,
0.04~0.06MPa of vacuum, the type bar traction after sizing, cutting, storage, hauling speed the squeezing than extruder of hauling machine
Go out speed slightly fast 3%~5%, extruder parameter setting is as follows：
3. the preparation method of Wood-plastic profiles according to claim 2, it is characterised in that aqueous after PP waste plastics, wood powder drying
Rate is less than 0.5%.
4. a kind of manufacture device of Wood-plastic profiles according to claim 1, it is characterised in that including plastic cleaning device, wood
Powder drying unit, weighing device, mixing device, extruding pelletization device and extrusion molding apparatus, plastic cleaning device are included successively
Conveyer belt, disintegrating machine, the first screw feeding machine, cleaning machine, cyclone drying machine, the first vibratory sieve, the air blower and first of connection
Feed bin, wood powder drying unit is the second screw feeding machine and bipyramid rotary dryer being sequentially connected, and weighing device claims for belt
Expect scale, mixing arrangement is the 3rd screw feeding machine and high-speed mixer being sequentially connected, and extruding pelletization device is sequentially connected
4th screw feeding machine, parallel double-screw extruder, pelleter, the second vibratory sieve and the second feed bin, second vibratory sieve
Bottom is provided with air blower, and extrusion molding apparatus is that the 5th screw feeding machine, conical double screw extruder, vacuum being sequentially connected are fixed
Type cooling device, hauling machine and cutting machine, first feed bin, bipyramid rotary dryer, high-speed mixer and the second feed bin
Bottom is respectively provided with the small handcart of middle conversion, and the charging aperture of the 3rd screw feeding machine is located at the lower section of the discharging opening of belt weighing scale.
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| CN201710519043.4A CN107189216A (en) | 2017-06-30 | 2017-06-30 | The formula and its preparation method and its manufacture device of Wood-plastic profiles |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108148261A (en) * | 2017-12-26 | 2018-06-12 | 上海普利特复合材料股份有限公司 | A kind of low smell, the Wood flour filled modified polypropylene material for imitating flocking effect and preparation method thereof |
| CN108579600A (en) * | 2018-06-15 | 2018-09-28 | 江苏永道科技有限公司 | A kind of proximate matter tubing compounding feed production line |
| CN109655111A (en) * | 2019-01-15 | 2019-04-19 | 广东首熙智能装备有限公司 | Injection molding machine peripheral equipment quality monitoring system |
| CN109773937A (en) * | 2019-03-17 | 2019-05-21 | 杭州裕登农业技术开发有限公司 | A kind of gardens Floor production device |
| CN111732787A (en) * | 2020-06-22 | 2020-10-02 | 江苏理工学院 | Polypropylene-based composite material entirely derived from waste and preparation method thereof |
| CN112062990A (en) * | 2020-08-18 | 2020-12-11 | 浙江工业大学 | Process for preparing high-water-absorptivity wood-plastic composite film by using waste medical mask |
| CN112659398A (en) * | 2021-01-12 | 2021-04-16 | 温州市隆昌塑料有限公司 | Full-automatic mixing device, plastic production system and production method |
| CN112708197A (en) * | 2020-12-24 | 2021-04-27 | 广东金发科技有限公司 | Toughening and reinforcing recycled PP composite material and preparation method and application thereof |
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| CN101967288A (en) * | 2010-09-21 | 2011-02-09 | 深圳市科聚新材料有限公司 | Wood flour filled polypropylene composite material and preparation method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101967288A (en) * | 2010-09-21 | 2011-02-09 | 深圳市科聚新材料有限公司 | Wood flour filled polypropylene composite material and preparation method thereof |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108148261A (en) * | 2017-12-26 | 2018-06-12 | 上海普利特复合材料股份有限公司 | A kind of low smell, the Wood flour filled modified polypropylene material for imitating flocking effect and preparation method thereof |
| CN108579600A (en) * | 2018-06-15 | 2018-09-28 | 江苏永道科技有限公司 | A kind of proximate matter tubing compounding feed production line |
| CN109655111A (en) * | 2019-01-15 | 2019-04-19 | 广东首熙智能装备有限公司 | Injection molding machine peripheral equipment quality monitoring system |
| CN109655111B (en) * | 2019-01-15 | 2021-01-05 | 广东首熙智能装备有限公司 | Injection molding machine peripheral equipment quality monitoring system |
| CN109773937A (en) * | 2019-03-17 | 2019-05-21 | 杭州裕登农业技术开发有限公司 | A kind of gardens Floor production device |
| CN109773937B (en) * | 2019-03-17 | 2021-12-24 | 杭州裕登农业技术开发有限公司 | Garden floor production device |
| CN111732787A (en) * | 2020-06-22 | 2020-10-02 | 江苏理工学院 | Polypropylene-based composite material entirely derived from waste and preparation method thereof |
| CN112062990A (en) * | 2020-08-18 | 2020-12-11 | 浙江工业大学 | Process for preparing high-water-absorptivity wood-plastic composite film by using waste medical mask |
| CN112708197A (en) * | 2020-12-24 | 2021-04-27 | 广东金发科技有限公司 | Toughening and reinforcing recycled PP composite material and preparation method and application thereof |
| CN112659398A (en) * | 2021-01-12 | 2021-04-16 | 温州市隆昌塑料有限公司 | Full-automatic mixing device, plastic production system and production method |
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Application publication date: 20170922 |