CN102241798A - Manufacture method of synthetic resin from waste polystyrene foamed plastic - Google Patents
Manufacture method of synthetic resin from waste polystyrene foamed plastic Download PDFInfo
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Abstract
The invention relates to a manufacture method of a bead-shaped polystyrene-grafted copolymer solid resin from waste polystyrene foamed plastic used as a raw material and belongs to the technical field of synthetic resins. The manufacture method provided by the invention comprises: dissolving the waste polystyrene foamed plastic or other polystyrene resins in vinyl acetate, acrylate and other monomers, then stirring, adding a dispersant and water for dispersion, and adding an initiator for bead-shaped dispersion polymerization, or adding an oil-soluble initiator into the monomer for graft or interpenetrating network polymerization to generate a grafted polymer resin or a polymer resin in an interpenetrating network structure; filtering the polymer resin, washing and drying to directly prepare bead-shaped polystyrene and vinyl acetate-acrylate copolymer P(PS/VAc/BA) solid resin with the particle size of 0.1-10 mm. By utilizing the manufacture method, the difficulty in the preparation of the polystyrene and vinyl acetate copolymer resin caused by the large reactivity ratio difference between polystyrene monomer and vinyl acetate for direct copolymerization is solved, thus filling the market gap; and the obtained product has the advantages of simple manufacture process, no environmental pollution, low cost and wide application fields, can be used in hot melt adhesives, plastic films, rubber, plastic and resin modification additives and can also be used in coatings, adhesives and other application technical fields after being dissolved with organic solvents.
Description
Technical field
The present invention relates to a kind of method of utilizing waste old polystyrene foamed plastic for feedstock production polystyrene graft or interpenetrating(polymer)networks solid resin multipolymer.Belong to the synthetic resins technical field.
Background technology
Foamed poly styrene plastic is a kind of interchangeable heat thermoplastic plastic, is got by the styrene monomer polymerization, is mainly used in the Shockproof packaging of electrical equipment, instrument, heat-insulation and heat-preservation material, snack food product and rapid wear valuables etc., and a whole world year consumption reaches millions of tons.But because this class material light weight, volume are big, anticorrosive, be difficult for degraded under field conditions (factors), cause serious white pollution, destroy ecotope.How to handle and utilize these waste polystyrenes to become the common problem of paying close attention in various countries, the world today.The recoverying and utilizing method of waste old polystyrene foamed plastic mainly contained in the past: thermo-cracking reclaims the styrene monomer method, and shortcoming is the cost height, and the rate of recovery is low; Do paint or caking agent with adding assistant behind the organic solvent dissolution, shortcoming is a poor performance, and purposes is limited; Directly add sizing material after the fragmentation as lagging material, shortcoming is that performance is unsatisfactory; Become emulsion to make coating with adding assistant behind the organic solvent dissolution with water-dispersion, shortcoming is still need use organic solvent, and performance is not good.Therefore, the applied research of exploitation waste polystyrene has crucial economic benefit and social benefit.
The report of styrene-based bead-like resin is much known and extensively be described in the document, patent CN1138591 has described the method for producing polystyrene type bead and expandable polystyrene type bead, and styrene monomer is carried out suspension polymerization in the presence of the phosphoric acid salt that is slightly soluble in water and water-soluble sulfite and/or water-soluble persulphate.Patent CN101215355 has reported with vinylbenzene and other comonomers and has added dispersion agent and tensio-active agent that by suspension polymerization, random copolymerization makes the high oil absorbency bead-like resin.Patent CN1329634 has reported a kind of preparation technology's method of particulate state polystyrene foamed polymkeric substance, and its technology is implemented by styrene suspension polyreaction in the presence of fire retardant.CN101230152 has reported preparation technology's method of utilizing waste and old polystyrol to prepare micron-size spherical particles, its technology is waste old polystyrene foamed plastic to be dissolved in form organic phase in the organic solvent, the organic phase that is dissolved with polystyrene is mixed with the deionized water that is dissolved with tensio-active agent (water), and the tensio-active agent high speed shear emulsification dissemination by mechanical stirring and adding makes organic phase and water form stable microemulsion liquid; Again microemulsion is added in the precipitation agent, thereby prevents that by the precipitation agent synergy that relents the organic phase drop from reuniting and distortion produces even-grained micron-size spherical solid particulate fast.
Above-mentioned is to utilize styrene monomer to prepare polystyrene pearl particulate document, and it is a lot of to utilize waste and old polystyrol to prepare the coating report.CN101451042, CN101113266, CN1388191 have reported the preparation method of water proof anti-corrosive paint.Component is base-material with the waste polystyrene foamed plastics all, also comprises rubber, rosin, ethyl acetate, toluene, solvent and tolylene diisocyanate, and this coating has high degree of dispersion and seepage force, good weatherability, acid and alkali-resistance and high temperature, storage requirement is low, stable performance.CN1106433 has reported a kind of anti-corrosive and waterproof paint that prevents metallic corrosion and building materials percolating water.This invention is with resin, rubber, forms by the stirring of specified weight percentage mix with other composition.CN1072705 has reported a kind of protective system that is used for facilities such as steel and iron member, factory building, underground utilities.This coating mainly contains polystyrene, coal-tar pitch, N-BUTYL ACETATE, coumarone indene resin, through specific processing, heating, fully mixes and forms.CN1203932 has reported a kind of novel alkyd modified environmental protection coating.The base-material of this coating will be made up of deposed polystyrene, utilizes Synolac for main raw base-material to be carried out modification, joins solvent, auxiliary agent etc. again and just obtains alkyd modified environmental protection coating.CN1054090 has reported a kind of method for preparing hydrophobic building paint.This coating is that phenylethylene resin series or waste polystyrene foam are dissolved in synthesizing colourless transparent hydrophobic base-materials such as aromatic hydrocarbon, hydrochloric ether, ketone (except the acetone) or ester class, are equipped with mineral dye again and form.CN1287131 has reported and has utilized production of emulsion from waste foamed polystyrene and manufacture method thereof.It comprises the deposed polystyrene cracking, lysate is refining and three step of emulsion preparation process; The raw material of emulsion has deposed polystyrene crack refinement liquid, butyl acrylate, methyl methacrylate, vinylformic acid, emulsifying agent, ammonium persulphate, water.CN101457056 has reported the method for utilizing waste polystyrene foam and organic solvent to prepare coating.The CN1030431 production of daubing agent from waste foamed polystyrene, its method is that the waste polystyrene foam that reclaims is cleaned, pulverizes, is dissolved in toluene and the gasoline mixed solvent, add softening agent, tensio-active agent, thickening material, film coalescence aid and defoamer etc. and make the water-latex type finishing agent, this finishing agent can be used as the coating of wrapping material.Old snow plums etc. are main raw material with useless PS porous plastics, and Sodium dodecylbenzene sulfonate is an emulsifying agent, and dibutyl phthalate is a softening agent, acetone, toluene, ethyl acetate mixture are made solvent, rosin is properties-correcting agent, and turps is flow agent and solvent, makes the waterproof paint of excellent property.This waterproof paint coating is thin, does not need oven dry, and resistance to acids and bases is good; Adopt rolling method to get final product during construction, simple to operate, be mainly used in Corrugated Box, also can be used for the waterproof of fiberboard.Zhou Meizhen and Dong Wenli etc. are main raw material with the waste polystyrene foam plastic, handle to make waterproof paint with suitable solvent such as toluene, ethyl acetate and properties-correcting agent.This coating material production is with low cost, waterproof anti-corrosion performance good, and adhesive power is big, the strong and light of filming of anti-impact force, and preparation technology is simple, easy construction, is used for the waterproof of Corrugated Box, fiberboard and timber, can play protection against the tide, airtight effect.Yu Haishen does monomer with deposed polystyrene (PS) and vinylformic acid and ester class thereof, the dissolving of employing mixed solvent, carry out modification with Resins, epoxy, nonionic and anion surfactant carry out emulsion polymerization as blending emulsifiers, preparation epoxy resin modification Emulsion acrylic resin has been prepared watery anti-corrosion paint with the Emulsion acrylic resin of epoxy resin modification.The characteristics of these documents are to add the organic solvent that contaminate environment is arranged.
It is a lot of to utilize waste and old polystyrol to prepare the tackiness agent report, and CN1539900 has reported that a kind of preparation has the method for the water-proof cold adhesive of waterproof and bonding effect.It is made by major ingredient and auxiliary material, and its major ingredient has industry to extract polystyrene, the waste liquid behind coal tar, the assorted oil of petroleum refining industry, pitch or their mixture, waste polystyrene foam plastic, defoamer.Auxiliary material is for regulating the powdery material of construction of major ingredient viscosity.Have low cost of manufacture, good water-proof effect, and cohesive action is arranged, can be used as the caking agent of waterproof roll.CN 1510093 has reported a kind of production method of nanometer organic adhesion agent, and this invention is that mixed raw material forms fully with waste polystyrene foam plastic, Gum Rosin, industrial acetone, white gasoline, nano silicon, aluminium silver powder or copper powder.Xu Ming introduces polar group by orthogonal experiment method making on the deposed polystyrene macromolecular chain under the initiator effect, add properties-correcting agent (rosin, resol, EVA), make sizing agent have good agglutinating value(of coal) to polar surfaces, thereby prepare a kind of excellent property, of many uses and hot-melting type sizing agent cheaply.What new fast and Tang Xinghua is a main raw material with waste and old polystyrol (PS) porous plastics, and butyl acrylate (BA) and methyl methacrylate (MAA) monomer are properties-correcting agent, and p-poly-phenyl ethene carries out graft modification and a kind of tackiness agent is made in emulsification.This glue can be used for the bonding of materials such as timber, paper, aluminium and ceramic tile.
More than these methods all be added with the organic solvent of contaminate environment, and complex process, purposes is limited.And the present invention is except technology is simple, and purposes is also extensive, can be used as the hot melt adhesive of high added value, after the also available organic solvent dissolution as coating and tackiness agent.The present invention utilizes waste and old polystyrol to replace conventional styrene monomer to carry out suspension polymerization, not only solved the difficult environmental problem that reclaims of the waste polystyrene foam that perplexs various countries for a long time, and realized that waste and old polystyrene plastics 100% reclaims, and has made P (PVc/BA) bead-like resin that is difficult for making with styrene monomer and Vinyl Acetate Monomer simultaneously.Can make multi-purpose resin by regulating prescription, for example plastics film, thin slice, hot melt adhesive, foaming product etc.
The present invention makes the polystyrene chain rupture or produces monomers such as free radical and vinyl acetate to carry out graft copolymerization or latex interpenetrating polymerization under the initiator condition, well-known, because vinylbenzene (r
1=55) with vinyl acetate (r
2=0.01) feature of reactivity ratio is r
1＞＞1, r
2＜＜1, too wide in the gap, thereby be difficult to copolymerization, it almost is the mixture of two kinds of homopolymer that vinylbenzene and vinyl acetate are carried out the product that radical polymerization obtains together.The present invention has well overcome this technical barrier, has prepared polystyrene/vinyl acetate between to for plastic ester graft copolymer.
Patent CN101265313 has prepared the vinyl acetate-styrene segmented copolymer, but it is the emulsion copolymerization that the coupling monomer is realized vinylbenzene and vinyl acetate with ethyl propenoate, MALEIC ANHYDRIDE or butyl acrylate.Patent CN1205341 has announced a kind of synthetic method of AB block copolymer and the AB block copolymer of preparation thereof, the A section of this multipolymer is the polystyrene ester, the B section is the polymkeric substance of polystyrene, poly-(methyl) vinylformic acid (ester), its step is that vinyl acetate reacts formation polyvinyl acetate (PVA) prepolymer in the presence of tetracol phenixin, initiator, again prepolymer is generated the described AB block copolymer of invention with the vinyl monomer reaction in the presence of catalyzer.
These documents all are to utilize the link coupled method to realize the copolymerization of styrene monomer and vinyl acetate, still do not have the method for bibliographical information polystyrene and vinyl acetate direct copolymerization at present, and the invention solves this difficult problem.Investigator of the present invention (Zhao Quan Ai; Hai Rong Zhang J.Appl.Polym.Sci.2009 113:3196) utilizes waste polystyrene foam to make the butyl acrylate grafted polystyrene multipolymer of product for emulsion form for raw material.The present invention then is to use the pearl copolymerization that suspend such as polystyrene used foamed plastics and vinyl acetate, make vinyl acetate grafted polystyrene multipolymer, in actual applications, add also in right amount for improving product performance that (methyl) vinylformic acid monomers such as (esters) carries out copolymerization.
Summary of the invention
The purpose of this invention is to provide the method that a kind of cheap, excellent performance and technology are simply produced the polystyrene type bead-like resin.
Method of the present invention is with waste old polystyrene foamed plastic or other polystyrene resins, dissolve with monomers such as vinyl acetate, (methyl) vinylformic acid (ester), vinylchlorid, stir then and add dispersion agent and water, disperseing the back to add initiator suspends or pearl polymerization, the reaction later stage continues to add dispersion agent and initiator in batches, make it to take place more grafting or latex interpenetrating polymerization, generate fluoropolymer resin with grafting or inierpeneirating network structure.
The present invention proposes a kind of method for preparing the fluoropolymer resin of different-grain diameter scope, at first participate in the dissolving and the polymerization of polystyrene foamed plastics by the monomer of selecting the different glass temperature for use, prepare the resinous polymer of difference in functionalitys such as different glass temperature, hardness, intensity, secondly, dispersion agent by initial disposable adding 50%～60%, remaining 40%～50% added in the reaction later stage, had guaranteed that the monodispersity of polymer beads is good.
Among the present invention, described suspension polymerization is the step following (material rate is all with listed as parts by weight) of feedstock production vinyl acetate grafted polystyrene bead-like resin with the polystyrene foamed plastics:
(1) 100～200 part of washing impurity-removing and dried polystyrene foam add in the monomeric reactors such as vinyl acetate that are equipped with 160～200 parts, stir.
(2) 6～20 parts of dispersion agents, 500～800 parts of water add in the reactor, are heated to 60～80 ℃, drip 1～4 part of water soluble starter, and mechanical stirring is regularly added 2～10 parts of dispersion agents in the reaction.
(3) when the pearl body sinks to the bottom, during hardening, the 90 ℃ of slakings that heat up finish reaction, the product that obtains with the boiling water washing, filter, precipitation for several times after, vacuum-drying.
Among the present invention, described deposed polystyrene is waste polystyrene foam or its any polystyrene resin.Described monomer comprises vinyl acetate, (methyl) vinylformic acid (ester), vinylchlorid, vinyl cyanide, acrylamide, divinyl etc.Can be a kind of, also can be multiple mix monomer.
Among the present invention, described dispersion agent is water soluble organic polymers such as the salt, Natvosol of polyvinyl alcohol, polyacrylic acid and polymethyl acrylic acid, or water-fast inorganic powders such as lime carbonate, tricalcium phosphate, magnesiumcarbonate, or multiple and use.
Among the present invention, described dispersion aids is sodium lauryl sulphate, Sodium dodecylbenzene sulfonate, sodium laurylsulfonate, Voranol EP 2001, polyoxyethylene fatty acid ester, sorbitan fatty acid ester, sodium stearate and sodium oleate.
Among the present invention, described initiator is oil-soluble initiator commonly used or water soluble starter or other peroxide initiators or redox initiators such as Potassium Persulphate, ammonium persulphate such as benzoyl peroxide, hydrogen phosphide cumene, Diisopropyl azodicarboxylate.
The present invention has opened up one and has obtained that technology is simple, with low cost, monodispersity is good, the method for preparing resin of excellent property.The add-on of control dispersion agent can obtain varigrained polystyrene resin, control adds the polystyrene resin that monomeric quality can obtain different molecular weight, control adds the polystyrene resin that monomeric kind can obtain different performance, and the polymkeric substance that satisfies the different performance demand for the recovery and the preparation of polystyrene provides more wide thinking.
Specific implementation method
For a better understanding of the present invention, according to the technology solution of invention, the present invention is further described in conjunction with example below, but content of the present invention not only is confined to following example.
Embodiment 1
With waste and old polystyrene plastics and monomer vinyl acetate is raw material, with ammonium persulphate and sodium bisulfite is redox initiator, tricalcium phosphate and polyvinyl alcohol are dispersion agent, obtain vinyl acetate/polystyrene graft copolymer by implementing suspension polymerization, can directly be used as High-temp.-resistant hot-melt adhesive.
Step (1): earlier with waste polystyrene foam with deionized water clean, pulverizing, drying, in reactor, add 40 parts of monomer vinyl acetates then, plug prolong on the reactor, thermometer, progressively add 60 parts of polystyrene, mechanical stirring makes it dissolving evenly.
Step (2): 5 parts of tricalcium phosphates and polyvinyl alcohol are added in the reactor for 5 parts, add 200 parts of water, continue to stir, heating in water bath makes system begin to heat up.
Step (3): when temperature rises to 60 ℃, in system, add 0.5 part of initiator ammonium persulfate, stir, and open the heat of water of condensation to produce with reaction.Continue slowly to heat up, whole system is at 75 ℃ of reaction 4h down, along with the carrying out of reaction added 5 parts of sodium bisulfite 0.5 and tricalcium phosphates to system in batches.
Step (4):, be warmed up to 100 ℃ of slaking 6h with 1 ℃ of speed of per minute when the hardening of pearl body, when sinking to the bottom.Be cooled to 50 ℃, the deionized water wash that the pearl body and function is a large amount of 5 times is gone out moisture at last, and the product that has washed is placed on vacuum-drying on the watch-glass, granularity be the Transparent bead body of 0.8-1.5mm.
It is as follows to fill a prescription:
In 135～180 ℃,, it is bonding to treat that the fusion of pearl body promptly can be used as the tackiness agent coating.
Embodiment 2
With waste and old polystyrene plastics, monomer butyl acrylate and vinyl acetate, function monomer vinylformic acid is raw material, with ammonium persulphate and sodium bisulfite is initiator, tricalcium phosphate and Natvosol are dispersion agent, obtain acrylate/phenylethene grafted copolymer by implementing suspension polymerization, can be used as unsewn binding books and sheet package hot melt adhesive, be used as paint binder and tackiness agent behind the also available organic solvent dissolution.
Step (1): earlier with waste polystyrene foam with deionized water clean, pulverizing, drying, in reactor, add 45 parts of monomer butyl acrylate, 15 parts of vinyl acetates, 10 parts in function monomer vinylformic acid then, plug prolong on the reactor, thermometer, progressively add 35 parts of polystyrene, mechanical stirring makes it dissolving evenly.
Step (2): with 3 parts of 1 part of Sodium dodecylbenzene sulfonate, 3 parts of tricalcium phosphates and Natvosols, add in the reactor, adds 250 parts of water, continue to stir, heating in water bath makes system begin intensification.
Step (3): when temperature rises to 60 ℃, in system, add 0.4 part of initiator ammonium persulfate, stir, and open the heat of water of condensation to produce with reaction.Continue to heat up, whole system is reacted 4h down at 80 ℃, along with the carrying out of reaction added 0.3 part of sodium bisulfite and 1 part of tricalcium phosphate to system in batches.
Step (4): when the pearl body no longer is clamminess, when sinking to the bottom, is warmed up to 95 ℃ of slaking 4h with the speed of 1 ℃ of per minute.Reaction finishes, and products therefrom is with a large amount of deionized water wash 5 times, goes out moisture at last, and the product that has washed is placed on vacuum-drying on the watch-glass, must particle diameter be 0.5-3.0mm Transparent bead body.
It is as follows to fill a prescription:
When doing the hot melt adhesive use, be heated to 130-180 ℃, treat the fusion of pearl body, can be bonding.Also can utilize acetic acid ethyl dissolution pearl body,, reduce viscosity, can be coated with construction with dissolving resin.
Embodiment 3
With waste and old polystyrene plastics, vinyl acetate, vinylchlorid is raw material, with the benzoyl peroxide is initiator, lime carbonate and polyvinyl alcohol are dispersion agent, obtain vinylchlorid grafted polystyrene powdered resin by implementing suspension polymerization, can be used as high-impact plastics or plastics additive.
Step (1): with waste polystyrene foam with deionized water clean, pulverizing, drying.Add 20 parts of monomer vinyl acetates, 40 parts in vinylchlorid in reactor, plug prolong on the reactor, thermometer progressively adds 40 parts of polystyrene, and mechanical stirring makes it dissolving evenly.
Step (2): 5 parts in lime carbonate and polyvinyl alcohol are added in the reactor for 3 parts, add 250 parts of water, continue to stir, heating in water bath makes system begin to heat up.
Step (3): when temperature rises to 60 ℃, in system, add 0.2 part of initiator benzoyl peroxide, stir, and open the heat of water of condensation to produce with reaction.Continue to heat up, whole system was reacted 5 hours down at 65 ℃, along with the carrying out of reaction added 2 parts in lime carbonate to system in batches.
Step (4):, be warmed up to 93 ℃ of slakings 6 hours with the speed of 1 ℃ of per minute when the hardening of pearl body, when sinking to the bottom.Reaction finishes, and products therefrom is removed moisture at last with a large amount of deionized water wash 5 times, and the product vacuum-drying of having washed is got bead-like resin, must granularity be the Transparent bead body of 1.0-3.5mm.
It is as follows to fill a prescription:
Directly the pearl body is poured in the mould, behind the heating and melting, cooling can be used again.
Embodiment 4
With waste and old polystyrene plastics and vinyl acetate, vinyl cyanide is raw material, with Potassium Persulphate and sodium bisulfite is initiator, tricalcium phosphate and polyvinyl alcohol are dispersion agent, obtain vinyl cyanide modified polystyrene type bead-like resin by implementing suspension polymerization, can be used as oil resistant plastics.
Step (1): earlier with waste polystyrene foam with deionized water clean, pulverizing, drying, in reactor, add 20 parts of monomer vinyl acetates, 40 parts of vinyl cyanide then, plug prolong on the reactor, thermometer, progressively add 40 parts of polystyrene, mechanical stirring makes it dissolving evenly.
Step (2): 5 parts of tricalcium phosphates and polyvinyl alcohol are added in the reactor for 3 parts, add 200 parts of water, continue to stir, heating in water bath makes system begin to heat up.
Step (3): when temperature rises to 60 ℃, in system, add 0.3 part of initiator potassium persulfate, stir, and open the heat of water of condensation to produce with reaction.Continue to heat up, whole system was reacted 7 hours down at 60 ℃, along with the carrying out of reaction added 3 parts in lime carbonate and sodium bisulfite 0.2 to system in batches.
Step (4):, be warmed up to 98 ℃ of slakings 7 hours with the speed of 1 ℃ of per minute when the hardening of pearl body, when sinking to the bottom.Reaction finishes, and products therefrom is removed moisture at last with a large amount of deionized water wash 5 times, and the product vacuum-drying of having washed is got bead-like resin, must granularity be the Transparent bead body of 1.5-3.8mm.
It is as follows to fill a prescription:
Directly the pearl body is poured in the mould, behind the heating and melting, cooling can be used again.
Embodiment 5
With waste and old polystyrene plastics and vinyl acetate, dibutyl phthalate is raw material, with the ammonium persulphate is initiator, lime carbonate and polyvinyl alcohol are dispersion agent, obtain vinyl acetate grafted polystyrene bead-like resin by implementing dispersion polymerization, can be used for the hot melt adhesive of non-metallic material such as timber, paper, fiber.
Step (1): earlier with waste polystyrene foam with deionized water clean, pulverizing, drying, in reactor, add then 45 parts of vinyl acetates, 10 parts of dibutyl phthalates,, plug prolong on the reactor, thermometer, progressively add 40 parts of polystyrene, mechanical stirring makes it dissolving evenly.
Step (2): 6 parts in lime carbonate and polyvinyl alcohol are added in the reactor for 3 parts, add 200 parts of water, continue to stir, heating in water bath makes system begin to heat up.
Step (3): when temperature rises to 60 ℃, in system, add 0.4 part of ammonium persulphate, stir, and open the heat of water of condensation to produce with reaction.Continue to heat up, whole system is 85 ℃ of reactions down, along with the carrying out of reaction added 1 part in lime carbonate to system in batches.
Step (4):, be warmed up to 108 ℃ of slaking for some time when the hardening of pearl body, when sinking to the bottom.Reaction finishes, and products therefrom is removed moisture at last with a large amount of deionized water wash 5 times, and the product vacuum-drying of having washed is got bead-like resin, must granularity be the Transparent bead body of 1.0-4.0mm.
It is as follows to fill a prescription:
Under 130-170 ℃, treat that the fusion of pearl body can construct.
Note: this patent has obtained Wuhan City science and technology office and has subsidized, and item number is: 201060723311
Claims (7)
1. method of utilizing waste old polystyrene foamed plastic for feedstock production polystyrene graft copolymer resin.Belong to the synthetic resins technical field.Method of the present invention is with waste old polystyrene foamed plastic, or other polystyrene resins, dissolve with monomers such as vinyl acetate, acrylate, stir then and add dispersion agent, dispersing auxiliary and water, disperse the back to add initiator and carry out pearl suspension polymerization, make it to take place block or grafting or latex interpenetrating polymerization, product after filtration, washing, drying, directly obtain the polymkeric substance of polystyrene and vinyl acetate and acrylate etc., particle diameter is the pearl solid resin of 0.1～10mm.
2. preparation method as claimed in claim 1 is characterized in that deposed polystyrene is waste old polystyrene foamed plastic or its any polystyrene resin.
3. preparation method as claimed in claim 1 is characterized in that used monomer comprises vinyl acetate, (methyl) vinylformic acid (ester), vinylchlorid, vinyl cyanide, acrylamide, divinyl etc.Can be a kind of, also can be multiple mix monomer.
4. preparation method as claimed in claim 1, it is characterized in that used dispersion agent is water soluble organic polymers such as polyvinyl alcohol, gelatin, methylcellulose gum, carboxymethyl cellulose, poly-(methyl) acrylic acid salt, Natvosol, or it is water-fast inorganic powders such as lime carbonate, tricalcium phosphate, magnesiumcarbonate, or multiple and use.The consumption of water soluble organic polymer dispersion agent is 0.1～3% of polystyrene and a monomer total amount, and the consumption of inorganic powdery dispersion agent is 0.5～3% of polystyrene and a monomer total amount.
5. preparation method as claimed in claim 1, it is characterized in that used dispersion aids is sodium lauryl sulphate, Sodium dodecylbenzene sulfonate, sodium laurylsulfonate, Voranol EP 2001, polyoxyethylene fatty acid ester, sorbitan fatty acid ester, sodium stearate and sodium oleate.
6. preparation method as claimed in claim 1 is characterized in that used initiator is benzoyl peroxide, Diisopropyl azodicarboxylate, persulphate or other peroxide initiators or redox initiator.
7. preparation method as claimed in claim 1, it is characterized in that final products made thereby is the pearl solid resin of 0.1～10mm, its granular size is relevant with the kind and the consumption of used dispersion agent, and the used ratio of water soluble organic polymer dispersion agent and dispersion aids increases, and then product cut size diminishes.
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| CN105315596A (en) * | 2015-12-01 | 2016-02-10 | 仇颖超 | Method for recycling polystyrene foams to prepare polystyrene foam flame-retardant plate |
| CN106349784A (en) * | 2016-08-29 | 2017-01-25 | 上海大学 | Solvent-free quick-curing coating based on waste polystyrene foam and preparation method of solvent-free quick-curing coating |
| CN107603520A (en) * | 2017-09-20 | 2018-01-19 | 盐城华和再生物资有限公司 | The technique that a kind of waste or used plastics woven bag recycles |
| WO2018158285A1 (en) * | 2017-02-28 | 2018-09-07 | Total Research & Technology Feluy | Process for producing monovinylaromatic polymer incorporating post-consumer recycled polystyrene, monovinylaromatic polymer incorporating post-consumer recycled polystyrene and articles produced thereof |
| CN111363173A (en) * | 2020-04-15 | 2020-07-03 | 南京大学 | Method for preparing nano-scale polystyrene material from waste polystyrene plastic product |
| CN112812489A (en) * | 2021-02-04 | 2021-05-18 | 浙江科普特新材料有限公司 | Modified plastic based on interpenetrating network structure and preparation method thereof |
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| CN103820061A (en) * | 2014-01-22 | 2014-05-28 | 江苏紫峰农业科技股份有限公司 | Adhesive for plastic-wood composite materials and preparation method thereof |
| CN103820061B (en) * | 2014-01-22 | 2016-03-30 | 江苏紫峰农业科技股份有限公司 | A kind of sizing agent for Wood plastic composite and preparation method thereof |
| CN105315596A (en) * | 2015-12-01 | 2016-02-10 | 仇颖超 | Method for recycling polystyrene foams to prepare polystyrene foam flame-retardant plate |
| CN106349784A (en) * | 2016-08-29 | 2017-01-25 | 上海大学 | Solvent-free quick-curing coating based on waste polystyrene foam and preparation method of solvent-free quick-curing coating |
| WO2018158285A1 (en) * | 2017-02-28 | 2018-09-07 | Total Research & Technology Feluy | Process for producing monovinylaromatic polymer incorporating post-consumer recycled polystyrene, monovinylaromatic polymer incorporating post-consumer recycled polystyrene and articles produced thereof |
| US11124638B2 (en) | 2017-02-28 | 2021-09-21 | Total Research & Technology Feluy | Process for producing monovinylaromatic polymer incorporating post-consumer recycled polystyrene, monovinylaromatic polymer incorporating post-consumer recycled polystyrene and articles produced thereof |
| CN107603520A (en) * | 2017-09-20 | 2018-01-19 | 盐城华和再生物资有限公司 | The technique that a kind of waste or used plastics woven bag recycles |
| CN111363173A (en) * | 2020-04-15 | 2020-07-03 | 南京大学 | Method for preparing nano-scale polystyrene material from waste polystyrene plastic product |
| CN112812489A (en) * | 2021-02-04 | 2021-05-18 | 浙江科普特新材料有限公司 | Modified plastic based on interpenetrating network structure and preparation method thereof |
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