CN102485787B - Bamboo shred waste regenerated composite plastic plate and production technology thereof - Google Patents

Bamboo shred waste regenerated composite plastic plate and production technology thereof Download PDF

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Publication number
CN102485787B
CN102485787B CN2010105673033A CN201010567303A CN102485787B CN 102485787 B CN102485787 B CN 102485787B CN 2010105673033 A CN2010105673033 A CN 2010105673033A CN 201010567303 A CN201010567303 A CN 201010567303A CN 102485787 B CN102485787 B CN 102485787B
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waste
bamboo
plastic
pvc
powder
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CN2010105673033A
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Chinese (zh)
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CN102485787A (en
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涂威忠
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湖南忠悦塑业有限公司
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04Particle-shaped
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/92Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92514Pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92542Energy, power, electric current or voltage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/9258Velocity
    • B29C2948/9259Angular velocity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92704Temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92876Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885Screw or gear
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92876Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895Barrel or housing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92952Drive section, e.g. gearbox, motor or drive fluids

Abstract

The invention relates to a bamboo shred waste regenerated composite plastic plate and a production technology thereof. Waste and old PVC (polyvinyl chloride) wastes and bamboo shreds, which are raw materials, are classified, fragmented, cleaned, dried, milled, pretreated, and molecule-modified to obtain the bamboo shred waste regenerated composite plastic plate. The technology has the advantages of no pollutant generation and low energy consumption in the whole production process, and low price and stable quality of the produced regenerated composite plastic plate.

Description

Bamboo bits materials recycling composite plastic plate and production technique thereof
Technical field
The present invention relates to a kind of composite plastic plate and production technique thereof, particularly relate to a kind of waste PVC and bamboo bits of adopting and be the regeneration composite plastic plate and the production technique thereof of raw material.
Background technology
At present, the raw materials used PVC of building materials such as China's door and window mainly rely on petroleum cracking to generate, oil consumption is huge, simultaneously, to have nearly 1,000,000 tons to be converted into plastic waste every year in these plastics of producing, with the waste plastics recovery utilization, and make high performance plastics, only be about 15%, technics of reclaim of plastic waste rate (more than 50%) far below developed country, and the plastics that China reclaims are mainly used in produces lower water shoot of performance requriements and outfall sewer, seldom is used to produce high-quality charcoal regeneration composite plastic plate.Both at home and abroad waste agronomic crop and waste or used plastics mainly with burn, thermolysis preparing liquid fuel and chemical and directly utilize etc., though can significantly reduce the accumulating amount of plastics, can bring serious topsoil by burning; Though thermolysis can be avoided a large amount of generations of pollutent, its recovery utilization rate is low, and facility investment is bigger, and cost recovery is higher; Therefore the rate that recycles that improves the waste or used plastics product is one of a large amount of effective ways that produce of the current waste or used plastics of reply.
Charcoal compo plate is the type material that utilizes waste or used plastics and bamboo fibers to adopt advanced technologies to process, and is a kind of can effectively economizing on resources and environmental protection fine twice-laid stuff.At present, all kinds of charcoal fibre products are in the U.S., Canada, Germany, Britain, Holland, states such as Japan and Korea S have obtained using comparatively widely, the industry and the market of certain scale have been formed, domestic researcher has also been done a large amount of work to this, the main processes of domestic production charcoal compo plate is at present: after falling branch carbon fiber powder feed particles and the pre-treatment of macromolecular material process subsequently, add specific auxiliary agent, mix up fully by a certain percentage, through high temperature, extruding, technology postcooling such as moulding are finalized the design, and make the charcoal compo door-plate section bar of definite shape.Its weak point is that charcoal fiber filled amount is higher in the charcoal compo produced of traditional technology, cause the mobile relatively poor of matrix material, influence the attractive in appearance of goods, processing units is caused certain wearing and tearing, and the smooth finish and the color and luster uniformity coefficient of the charcoal compo sheet material of producing are not ideal enough.
Summary of the invention
The present invention has overcome shortcoming of the prior art, provides a kind of new set of dispense than ratio, in the hope of reach optimization in order to parameter, save production cost, produce the purpose of high-quality plastic; And a kind of more advanced production technique, solution utilizes the smooth finish and the regenerated polymer base bamboo wood strongthener composite manufacturing technology difficult problem of the carbon fiber plastic sheet material of waste or used plastics production, forms and utilizes plastic waste direct production high quality charcoal regeneration composite plastic plate new technology.
Technical scheme of the present invention relates to a kind of bamboo bits materials recycling composite plastic plate, and its composition comprises the following weight proportion raw material: 100 parts in useless PVC powder, bamboo powder 20-30 part, one package stabilizer 5-7 part, processing aid ACR 3-5 part, impact modifier CPE 5-8 part, lubricant 0.8-1 part, stopping composition 8-10 part, tinting material 0.1-0.2 part, anti UV agent 0.01-0.015 part.
Described one package stabilizer is meant and has adopted the symbiosis reaction technology that three salt, disalt and metallic soap grain-size and the various lubricant with status nascendi in reaction system carried out the blended mixture, processing aid is meant acrylic resin, impact modifier is meant chlorinatedpolyethylene, lubricant is meant paraffin and stearic acid, and stopping composition is meant CaCO 3, tinting material is meant pigment, anti UV agent is meant 2-hydroxyl-4-methoxy benzophenone.
The invention still further relates to a kind of production technique of bamboo bits materials recycling composite plastic plate, comprise steps such as sorting, fragmentation, cleaning abrasive dust, also comprise:
(1) in recombination process, uses aluminic acid ester and vinylformic acid coupling agent treatment bamboo powder;
(2) hybrid technique that feeds intake: the first step, will the PVC powder and one package stabilizer drop in the homogenizer and be mixed into 75-80 ℃; Second step is when mixing temperature reaches 75-80 ℃, with pretreated bamboo powder and stopping composition CaCO 3Drop into together and be stirred to mixing temperature in the homogenizer to 85-90 ℃; In the 3rd step, when reaching 85-90 ℃, temperature will be stirred to 95-100 ℃ in modifier ACR and the impact modifier CPE input homogenizer; The 4th step, when temperature reaches 95-100 ℃,, when temperature reaches 115-120 ℃, open the homogenizer bin gate and carry out blowing mixing in lubricant and the pigment adding high-speed stirring, put into low-temperature mixed machine subcooling and mix; The 5th step, when compound is cooled to 45-50 ℃ in cryocooler, open cold mixer bin gate blowing, send in the forcing machine and produce.Listening the tinkle of bells to go round and begin again in order to feed intake mixes.
(3) the abrasive dust material being added medicaments such as chlorinated lime, dilute hydrochloric acid fades;
(4) powder after will fading is delivered in the magnetic stirring apparatus and is added Cellmic C 121 and carries out pre-treatment before the modification;
(5) pretreated powder passes through " secondary stirring device " again, adds chlorinatedpolyethylene PVC is carried out the molecule modification;
(6) the abrasive dust material is transported to the suspension reaction still, adds Cellmic C 121 and dilute hydrochloric acid and stir, regulate stirring intensity control PVC particle diameter, size-grade distribution;
(7) the PVC slurry directly enters stripping tower through the reactor discharge port, after sloughing Cellmic C 121 residual in the PVC particle, deliver to the drying tower centrifuge dehydration through transport tape, enter pneumatic dryer by helical feed again and hot blast exchanges, the surface-moisture of material is removed;
(8) material that carries out surface dewatering through pipe-line transportation to tablets press, add the chlorinatedpolyethylene homogenizing and granulating after, enter again that extruder plastication is extruded, cooling forming; Forcing machine schedule of operation: a, operative employee be equipment performance and carry out the first class maintenance of forcing machine on top of; After b, temperature reached set(ting)value, constant temperature 30 minutes was opened forcing machine, and engine speed is controlled at 8-10r/min, starup current I≤50A, when electric current greater than 50A, then should reduce feeding quantity so that electric current enters standard state, producing the electric current normal value is 40-45A; C, forcing machine exhaust vacuum degree control are at 0.05-0.07MPa; Subsidiary engine typing vacuum degree control is at 0.07-0.08MPa.
(9) temperature control must be lower than 195 ℃ in the entire production process.
Wherein, sorting is through removing non-plastic waste impurity, magnet removing metal sundries, differentiate waste plastic product, also comprising pneumatic separating: at first the waste plastic product fragmentation is sent in the hopper of sorting unit; Start blower fan then, fragment, fragment, the grains of sand are sent forth away, realize separating by falling the distance difference.Electrostatic separation: plastic waste is carried out pre-treatment with tensio-active agent, make plastic waste have tensio-active agent, high degree of agitation then, friction produces static, electronegative plastic grain is drawn onto " positive pole " side, positively charged " negative pole " side that is drawn onto, repeatable operation is separated plastics variety according to plastic tape electric energy power difference for several times like this.
Cleaning step mainly comprises preliminary election, cleaning, rinsing, notices that especially the content of various impurity evenly is controlled between the 9.5-10.5PPM in the plastic waste.
The operation steps of broken gordian technique:
(1) select for use the disc type vibro-crusher to carry out the waste material fragmentation;
(2) subsequently respectively with diameter be 0.2,0.4,0.8, the sieve of 1mm sieve powder
Mill screen lease making high speed turbine formula pulverizing mill is milled, and returns abrasive dust workshop section through vibratory screening apparatus sieve powder footpath more than 40 orders, and 40 orders are following qualified.
The present invention is applied to technology in the plastic waste course of processing by interpenetrating(polymer)networks (IP) blending and modifying and intercalation compounding technology, has improved intensity, rigidity and the enhanced water resistance of the bamboo-plastic combined plastic plate of PVC greatly; By adopting the specific molecule modification technology, reach the distribution of part in the optimization PVC and the framework of chain, change its crystal degree and orientation, improved tinting material dispersiveness and refractivity greatly.By above two The Application of Technology, the fusion rheological property of PVC improves, and it is short to show as the fusion time, and temperature is low, and balancing torque is little.In addition, improvement back PVC is static and dynamic thermal stability is good, good mechanical performance, and has high workability, the transparency and flame retardant resistance, provides favourable condition for processing the high quality goods and opening up credit rating.
Compared with prior art, the beneficial effect that the present invention has is: by the recycle and reuse to waste or used plastics, reduced the waste to plastics synthetic raw material-petroleum resources; Production process does not produce environmental pollution, power consumption is few; Raw material sources is extensive, with low cost;
Be applied to technology in the plastic waste course of processing by interpenetrating(polymer)networks (IP) blending and modifying and intercalation compounding technology, improved intensity, rigidity and the enhanced water resistance of PVC charcoal fiber composite plastic plate greatly; By adopting the specific molecule modification technology, reach the distribution of part in the optimization PVC and the framework of chain, change its crystal degree and orientation, improved tinting material dispersiveness and refractivity greatly.By above two The Application of Technology, the fusion rheological property of PVC improves, and it is short to show as the fusion time, and temperature is low, and balancing torque is little.In addition, improvement back PVC is static and dynamic thermal stability is good, good mechanical performance, and has high workability, the transparency and flame retardant resistance, provides favourable condition for processing the high quality goods and opening up credit rating.
Beneficial effect of the present invention also is to have reduced the waste to plastics synthetic raw material-petroleum resources by the recycle and reuse to waste or used plastics; Production process does not produce environmental pollution, power consumption is few; The charcoal regeneration composite plastic of producing has good stiffness and toughness, and can follow closely, bore, grind, saw, create, and also not yielding, anti-be full of cracks; Product surface is handled through special process, has mar-proof, anti-chemical pollution, corrosion resistant function, product easy cleaning, scrubbing resistance; That product has is fire-retardant, waterproof, protection against the tide, mothproof, dimensional stability, indeformable, long-lived high-performance; Product does not contain formaldehyde, energy-saving health environment-friendly, 100% recyclable utilization again; The range of product multi-size, the moulding of product and the visual reality of length and width specification and manufacture and design more select for client; The product light specific gravity, install simple and easy, long service life.
Beneficial effect of the present invention also is:
The physical properties of table 1:PVC bamboo fibers regeneration composite plastic plate relatively
Table 2: the comparison of bamboo bits materials recycling composite plastic plate performance index and GB (GB5761-93SG3)
Description of drawings
Fig. 1 is bamboo bits materials recycling composite plastic plate technological process of production figure
Fig. 2 improves bamboo bits materials recycling composite plastic plate color and luster uniformity coefficient new technological flow sketch
Fig. 3 improves bamboo bits materials recycling composite plastic plate surface smoothness new technological flow figure
Embodiment
Embodiment one: technical scheme of the present invention relates to a kind of bamboo bits materials recycling composite plastic plate, and its composition comprises the following weight proportion raw material: 100 parts in useless PVC powder, bamboo powder 20-30 part, one package stabilizer 5-7 part, processing aid ACR 3-5 part, impact modifier CPE 5-8 part, lubricant 0.8-1 part, stopping composition 8-10 part, tinting material 0.1-0.2 part, anti UV agent 0.01-0.015 part.
Described one package stabilizer is meant and has adopted the symbiosis reaction technology that three salt, disalt and metallic soap grain-size and the various lubricant with status nascendi in reaction system carried out the blended mixture, processing aid is meant acrylic resin, impact modifier is meant chlorinatedpolyethylene, lubricant is meant paraffin and stearic acid, and stopping composition is meant CaCO 3, tinting material is meant pigment, anti UV agent is meant 2-hydroxyl-4-methoxy benzophenone.
Embodiment two: the operation steps that improves the invention of bamboo bits materials recycling composite plastic plate color and luster uniform method is as follows:
(1) at first waste and old PVC material and bamboo powder are carried out sorting, fragmentation, cleaning, abrasive dust, fade at medicaments such as going out abrasive dust material adding chlorinated lime, dilute hydrochloric acid;
(2) powder after will fading is delivered in the magnetic stirring apparatus and is added Cellmic C 121 and carries out pre-treatment before the modification;
(3) pretreated powder passes through " secondary stirring device " again, adds aluminate coupling agent and butyl acrylate coupling agent PVC is carried out the molecule modification;
(4) the PVC powder particle enters tablets press through discharge pipe, adds tinting material and processing aid, kneading, homogenizing, granulation;
(5) granulation enters extruder plastication and extrusion moulding after transmission path is transported to the feeding machine of fitting room by barrel;
(6) section bar of depanning obtains surface-brightening, the uniform high-quality bamboo bits materials recycling composite plastic plate of color and luster by tractor traction, cutting, packing.
Embodiment three: the operation steps of the method invention of raising bamboo bits materials recycling composite plastic plate surface smoothness is as follows:
At first waste and old PVC material and bamboo powder are carried out sorting, fragmentation, cleaning, abrasive dust, then also comprise:
(1) the abrasive dust material is transported to the suspension reaction still through belt, add stirring reactions such as Cellmic C 121, dilute hydrochloric acid, and by regulating stirring intensity, control PVC particle diameter, size-grade distribution, form coating film at particle surface, make regular, the epigranular of polyvinyl chloride resin particle form the PVC molecule;
(2) the PVC slurry directly enters stripping tower through the reactor discharge port, slough in the PVC particle behind the Cellmic C 121 material, deliver to the drying tower centrifuge dehydration through transport tape, enter pneumatic dryer by helical feed again and hot blast exchanges, the surface-moisture of material is removed;
(3) the gained powder through pipe-line transportation to tablets press, add the chlorinatedpolyethylene homogenizing and granulating after, enter again that extruder plastication is extruded, cooling forming;
(4) bamboo of moulding depanning bits materials recycling composite plastic plate obtains high-quality PVC charcoal fiber composite plastic plate by tractor traction back cutting, packing.
Embodiment four: mixed processes feeds intake:
(1) will be mixed into 75-80 ℃ in PVC powder and the one package stabilizer input homogenizer;
(2) when mixing temperature reaches 75-80 ℃, with pretreated bamboo powder and stopping composition CaCO 3Drop into together and be stirred to mixing temperature in the homogenizer to 85-90 ℃;
To be stirred to 95-100 ℃ in modifier ACR and the impact modifier CPE input homogenizer when (3) temperature reaches 85-90 ℃;
When (4) temperature reaches 95-100 ℃,, when temperature reaches 115-120 ℃, open the homogenizer bin gate and carry out blowing, put into low-temperature mixed machine subcooling and mix mixing in lubricant and the pigment adding high-speed stirring;
When (5) compound is cooled to 45-50 ℃ in cryocooler, open cold mixer bin gate blowing, send in the forcing machine and produce.Listening the tinkle of bells to go round and begin again in order to feed intake mixes.
Embodiment five: the forcing machine schedule of operation:
(1) on top of equipment performance and schedule of operation of operative employee done the first class maintenance of mechanical means well;
(2) starup current I≤50A, when electric current greater than 50A, then should reduce feeding quantity so that electric current enters standard state, produce electric current normal value 42-45A;
(3) engine speed is controlled at 8-10r/min;
(4) extruder temperature control:
Table 3:(unit: ℃)
(5) forcing machine exhaust vacuum tightness 0.05-0.07MPa;
(6) subsidiary engine typing vacuum degree control is at 0.07-0.08MPa.
Embodiment six: the plastic waste sorting step:
(1) earlier non-plastics foreign material is removed, then greasy dirt goods and the empyreumatic plastic waste of blackening are picked out.
(2) metal sundries in the plastic waste is difficult to sort out by hand, removes with magnet;
(3), determine the kind of different plastic waste by rule of thumb according to the most common use of different plastics;
(4) running into the waste plastic product that is difficult to differentiate then differentiates with following several method:
The plasticization temperature differential method; The density differential method; The burning differential method; The outward appearance differential method.
Pneumatic separating: according to the relative density difference of plastics, the also different principle of the distance of drift can not only be separated the bigger plastics of relative density difference with the wind, and crushed stone that can relative density is bigger, native husky piece are separated.Its operation steps is: at first the waste plastic product fragmentation is sent in the hopper of sorting unit; Start blower fan then, fragment, fragment, the grains of sand are sent forth away, realize separating by falling the distance difference.
Electrostatic separation: utilize various plastics friction tape electric energy power and differential liberation mixed plastic.Its step is with tensio-active agent plastic waste to be carried out pre-treatment, make plastic waste have tensio-active agent, high degree of agitation then, friction produces static, electronegative plastic grain is drawn onto " positive pole " side, positively charged " negative pole " side that is drawn onto, repeatable operation is separated plastics variety according to plastic tape electric energy power difference for several times like this.Its charged ability size of different types of plastics is respectively: (positively charged) PS>PE>PP>PET>PVC (electronegative).
Embodiment seven: the operation steps of cleaning:
(1) prewashing: draw water with water pump plastic waste is washed, remove the pollutent on plastic waste surface.
(2) clean: residual contaminants is separated by equipment such as rinse bath, horizontal separators.Whether the foreign matter content according to material evenly advances to select continuously or batch cleaning simultaneously.The material foreign matter content is evenly selected continuous wash, the inhomogeneous batch cleaning of then selecting of content.Utilizing magnet that plastic waste is carried out de-iron matter simultaneously handles.
(3) rinsing: main purpose is the different high molecular polymer of partition density and cleans waste material and equilibrated ph value once more.
The content of various impurity evenly is controlled between the 9.5PPM-10.5PPM in the plastic waste.
Embodiment eight: the operation steps of broken gordian technique:
(1) select for use the disc type vibro-crusher to carry out the waste material fragmentation;
(2) subsequently respectively with diameter be 0.2,0.4,0.8, the sieve of 1mm sieve powder.
Embodiment nine: abrasive dust screening technological operation step
The waste or used plastics centrifuge dehydration after selected, send into abrasive dust workshop abrasive dust, pour into and cross the magnetic de-iron in the basin once more, adopt high speed turbine formula pulverizing mill to mill, more than 40 orders, return abrasive dust workshop section through vibratory screening apparatus sieve powder footpath, 40 orders are following to be salable product.

Claims (8)

1. the production method of a bamboo bits materials recycling composite plastic plate is characterized in that, described bamboo bits waste material again
Give birth to composite plastic plate and comprise the following weight proportion raw material:
100 parts of useless PVC powders;
Bamboo powder 20-30 part;
One package stabilizer 5-7 part;
Processing aid 3-5 part;
Impact modifier 5-8 part;
Lubricant 0.8-1 part;
Stopping composition 8-10 part;
Tinting material 0.1-0.2 part;
Anti UV agent 0.01-0.015 part;
Described one package stabilizer is meant and has adopted the symbiosis reaction technology that three salt, disalt and metallic soap grain-size and the various lubricant with status nascendi in reaction system carried out the blended mixture; Processing aid is meant acrylic resin; Impact modifier is meant chlorinatedpolyethylene; Lubricant is meant paraffin and stearic acid; Stopping composition is meant CaCO 3Anti UV agent is meant 2-hydroxyl-4-methoxy benzophenone;
Described production method comprises sorting, fragmentation, cleaning, mill screen step by step, is specially:
(1) in recombination process, uses aluminic acid ester and vinylformic acid coupling agent treatment bamboo powder;
(2) abrasive dust material adding chlorinated lime, dilute hydrochloric acid are faded;
(3) powder after will fading is delivered in the magnetic stirring apparatus and is added Cellmic C 121 and carries out pre-treatment before the modification;
(4) pretreated powder passes through the secondary stirring device again, adds chlorinatedpolyethylene useless PVC powder is carried out the molecule modification;
(5) the abrasive dust material after the modification is transported to the suspension reaction still, adds Cellmic C 121 and dilute hydrochloric acid and stirs, and regulates stirring intensity control PVC particle diameter, size-grade distribution;
(6) the PVC slurry directly enters stripping tower through the reactor discharge port, after sloughing Cellmic C 121 residual in the PVC particle, deliver to the drying tower centrifuge dehydration through transport tape, enter pneumatic dryer by helical feed again and hot blast exchanges, the surface-moisture of material is removed;
(7) material that carries out surface dewatering to tablets press, adds the chlorinatedpolyethylene homogenizing and granulating through pipe-line transportation;
(8) enter again that extruder plastication is extruded, cooling forming;
Temperature control must be lower than 195 ℃ in the entire production process.
2. method according to claim 1, sorting is that process is removed non-plastic waste impurity, magnet is removed metal sundries, differentiated waste plastic product, and it is characterized in that: described sorting step also comprises pneumatic separating: at first the waste plastic product fragmentation is sent in the hopper of sorting unit; Start blower fan then, fragment, fragment, the grains of sand are sent forth away, realize separating by falling the distance difference.
3. method according to claim 1, it is characterized in that: described sorting step also comprises electrostatic separation: with tensio-active agent plastic waste is carried out pre-treatment, make plastic waste have tensio-active agent, high degree of agitation then, friction produces static, and electronegative plastic grain is drawn onto " positive pole " side, positively charged being drawn onto " negative pole " side, repeatable operation is separated plastics variety according to plastic tape electric energy power difference for several times like this.
4. method according to claim 1, cleaning step mainly comprises preliminary election, cleaning, rinsing, it is characterized in that: make that foreign matter content is controlled between 9.5-10.5PPM in the plastic waste.
5. method according to claim 1 is characterized in that: the operation steps of described broken gordian technique:
(1) select for use the disc type vibro-crusher to carry out the waste material fragmentation;
(2) subsequently respectively with diameter be 0.2,0.4,0.8, the sieve of 1mm sieve powder.
6. method according to claim 1 is characterized in that: described abrasive dust screening is meant through high speed turbine formula pulverizing mill mills, and returns abrasive dust workshop section through the bolting particle diameter more than 40 orders, and 40 orders are following qualified.
7. method according to claim 1 is characterized in that: described plasticizing extrusion step comprises:
(1) after temperature reached set(ting)value, constant temperature 30 minutes was opened forcing machine;
(2) engine speed is controlled at 8-10r/min;
(3) starup current I≤50A, when electric current greater than 50A, then should reduce feeding quantity so that electric current enters standard state, producing the electric current normal value is 40-45A;
(4) forcing machine exhaust vacuum degree control is at 0.05-0.07MPa; Subsidiary engine typing vacuum degree control is at 0.07-0.08MPa.
8. method according to claim 1 also comprises the reinforced step that feeds intake, and it is characterized in that: the first step, and will give up PVC powder and one package stabilizer drop in the homogenizer and are mixed into 75-80 ℃; Second step is when mixing temperature reaches 75-80 ℃, with pretreated bamboo powder and stopping composition CaCO 3Drop into together and be stirred to mixing temperature in the homogenizer to 85-90 ℃; In the 3rd step, when reaching 85-90 ℃, temperature will be stirred to 95-100 ℃ in processing aid acrylic resin and the impact modifier chlorinatedpolyethylene input homogenizer; The 4th step, when temperature reaches 95-100 ℃,, when temperature reaches 115-120 ℃, open the homogenizer bin gate and carry out blowing mixing in lubricant and the pigment adding high-speed stirring, put into low-temperature mixed machine subcooling and mix; The 5th step, when compound is cooled to 45-50 ℃ in cryocooler, open cold mixer bin gate blowing, send in the forcing machine and produce.
CN2010105673033A 2010-12-01 2010-12-01 Bamboo shred waste regenerated composite plastic plate and production technology thereof CN102485787B (en)

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CN106519722A (en) * 2016-11-04 2017-03-22 赤水浩城竹业有限公司 Preparation technology of antistatic bamboo board

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CN1432605A (en) * 2002-01-14 2003-07-30 常怀春 Composition for producing synthetic timber and its prepn process
CN101787167A (en) * 2010-02-26 2010-07-28 华南师范大学 High-performance antibiosis wood plastic composite material and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1432605A (en) * 2002-01-14 2003-07-30 常怀春 Composition for producing synthetic timber and its prepn process
CN101787167A (en) * 2010-02-26 2010-07-28 华南师范大学 High-performance antibiosis wood plastic composite material and preparation method thereof

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