CN102690460B - Composite recycled plastic and preparation method thereof - Google Patents
Composite recycled plastic and preparation method thereof Download PDFInfo
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- CN102690460B CN102690460B CN 201210185628 CN201210185628A CN102690460B CN 102690460 B CN102690460 B CN 102690460B CN 201210185628 CN201210185628 CN 201210185628 CN 201210185628 A CN201210185628 A CN 201210185628A CN 102690460 B CN102690460 B CN 102690460B
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Abstract
The invention provides a composite recycled plastic and a preparation method thereof. The composite recycled plastic comprises the following components in part by weight: 50 to 70 parts of inorganic powder, 20 to 40 parts of waste plastic, 5 to 10 parts of abrasive material, 3 to 10 parts of plasticizer and 2 to 8 parts of reinforcing agent. Layered or meshy superfine inorganic powder is taken as a composite matrix, and is forcedly dispersed by a colloid mill under the slurry condition, waste plastics are fully plasticized and melted by a twin rotor continuous mixer with a transverse stretching function in the presence of a plasticizer and are embedded into the layered or meshy superfine inorganic powder, and the defects of complicated components, low strength, low stability and poor processability of the waste plastics are overcome. Because the superfine, transparent and lustrous inorganic powder is selected as a main base material for compounding, the defects of poor appearance, dark color, poor transparency and the like of the waste plastics are avoided.
Description
Technical field
The invention belongs to field of compound material, be specifically related to a kind of composite regenerative plastic and preparation method thereof.
Background technology
Along with the develop rapidly of plastics industry, waste or used plastics is increasing year by year also.According to relevant measuring and calculating, the amount of plastic waste is 50% left and right of plastics ultimate production.If these waste or used plastics can not in time be recycled, not only cause the huge wasting of resources; The more important thing is and cause great environmental pollution.Plastics-production depends on oil, and oil is to develop by up to a million years the resource that forms, and have non-renewable character, so the using priciple of plastics is decrement, regeneration, recycling.The recycling of waste or used plastics is the needs of Economic development still not, are also the needs of protection of the environment.The rate of recovery of China's waste or used plastics only has 20% left and right at present, and developed country reaches 70% left and right.Therefore, China need to strengthen the recycling to waste or used plastics.Waste plastic is containing huge value of exploiting and utilizing as a kind of new resource, and the sustainable regeneration of waste or used plastics is the general trend of reprocessed plastic(s) development.
The regeneration of waste or used plastics at present has several main routes.(1) carry out elementary sorting, cleaning, recycling, the technique of these class methods is fairly simple, due to reprocessed plastic(s) through repeatedly processing, the mechanical property of plastics reduces, colour-darkening, processing difficulties, degraded even occurs, directly use the lot of unstable factor to occur; (2) take the different technologies means such as blend, modification to improve reprocessed plastic(s) over-all properties and range of application; (3) by pyrolysis recycle plastics-production petroleum gas or produce coating etc. by dissolving, but owing to having high input, complex process, cost is high, has limited large-scale development; (4) utilize waste or used plastics to burn and carry out energy recovery, its defective is to produce objectionable impurities, destroys earth outer space ozonosphere, causes global warming and forms acid rain, jeopardizes human body health.
Reprocessed plastic(s) are mostly the mixture of multiple plastics at present, are difficult to guarantee the stability of use, and therefore, reprocessed plastic(s) mostly are applied to the low side plastics.Such as by modification, blend, the technique means such as compound, reprocessed plastic(s) being used for Wood plastic composite, modifying asphalt, plastic concrete etc., brought into play preferably the regeneration of reprocessed plastic(s).But be limited to the impact of the performances such as reprocessed plastic(s) intensity, processibility, these utilize mode all there is no really to bring into play the natural characteristics of plastics, make waste or used plastics rest on the aspect of utilizing of extensive style.Be used for if make reprocessed plastic(s) recover the satisfactory stability performance by simple regenerative use technology efficiently the value that the middle and high end plastics will greatly improve the reprocessed plastic(s) application.Therefore, how with waste or used plastics by modification, the characteristic and performance of reduction plastics itself is the key that realizes the waste plastic regeneration recycle.
Publication number is that the patent of CN101798410A is complicated for the reprocessed plastic(s) composition, cost is high, ropy defective, a kind of formula that utilizes waste PP and PE compound to produce reprocessed plastic(s) is disclosed, by utilizing a small amount of maleic anhydride, light calcium carbonate to improve the quality of reworked material, make reworked material be used for large scale plastic product.This patent has only proposed a kind of formula from the consistency aspect to material improvement, and material still is mixed into the master with PP, PE, does not solve processing stability, and cost does not obviously reduce yet.
Publication number is the renovation process that CN101851363A discloses a kind of waste polyethylene.Strengthen by waste polyethylene, linking agent, nano material is crosslinked in twin screw extruder, original position, obtain the regenerated polythene of molten state.The present invention improves intensity and the creep-resistant property of reworked material by crosslinked and use nano material.But Drawing abillity does not improve, and the waste or used plastics that especially mixes for Multiple components owing to differed by the linking agent influence degree, causes the regenerability of regenerated polythene unstable.
For above problem, the present invention is compound by material of main part inorganic powder and a small amount of waste or used plastics, by specific performances such as the transparency of inorganic powder, thermotolerance, mobility, reduced good transparent, heat-resisting, the processing stability energy of reprocessed plastic(s), expanded the use range of reprocessed plastic(s), reduced the reprocessed plastic(s) cost, for the recycling utilization that realizes waste or used plastics has found a new breakthrough mouth.
Summary of the invention
The invention provides a kind of take inorganic powder as main body material composite regenerative plastic and the preparation method of described composite regenerative plastic.The problem such as the invention solves that the waste or used plastics mixing element is complicated, intensity is low, poor stability, poor processability, appearance luster are gloomy.
The invention provides a kind of composite regenerative plastic, it is characterized in that counting by weight by 50-70 part inorganic powder, 20-40 part waste or used plastics, 5-10 part abrasive, 3-10 part softening agent, 2-8 part toughener and form.
It is that 6000-10000 order, specific refractory power are 1.40-1.60, have one or more in stratiform or cancellated white carbon black, vermiculite, mica, talcum powder, expanded glass microballon, barium sulfate, agalmatolite that described inorganic powder material is selected particle diameter.
Described waste or used plastics can be selected each analog thermoplastic waste or used plastics by the sorting granulation, as Low Density Polyethylene (LDPE), high density polyethylene(HDPE) (HDPE), metallocene PE (MPE), linear low density polyethylene (LLDPE), polypropylene (PP), ethylene-vinyl acetate copolymer (EVA), ethylene-acrylic acid copolymer (EAA) or multiple mixture.
Described abrasive refers to one or more in Poly Propylene Wax, polyethylene wax, Microcrystalline Wax, Fischer-Tropsch wax, EVA wax, white oil, paraffin.
Described softening agent refers to one or more in phosphoric acid ester, acetyl triethyl citrate, boric acid ester, glyceryl monostearate, Di Iso Decyl Phthalate.
Described toughener is the rare multipolymer of styrene-butadiene-styrene block copolymer, ethene-Xin or their mixture.
The preparation method of composite regenerative plastic of the present invention, its material composition can operate as follows:
1 ＇ under 120-140 ℃ of temperature condition, mixes inorganic powder, abrasive in high-speed mixer
Stir 5-10min, stirring velocity 400-900r/min, making the complete melting of abrasive and inorganic powder mixed is even jelly;
2 ＇ add shredder to grind 10-20min the pulpous state compound of step 1 ＇ gained, obtain grinding powder;
3 ＇ add two-rotor continuous mixer with the grinding composite granule of waste or used plastics, softening agent, step 2 ＇ gained, spinner velocity 100-200r/min, and mixing 5-10min, the complete plastifying fusion of waste or used plastics embeds stratiform or netted inorganic powder forms homogeneous body;
4 ＇ add toughener in step 3 ＇, continue mixing 3-5min;
5 ＇ enter extruding and granulating equipment with mixing material direct heat feeding in step 4 ＇, by exhaust, pelletizing, cooling, obtain composite regenerative plastic.
In above-mentioned preparation method, said shredder is colloid mill, its distinctive profile of tooth mill constantly divides the inorganic powder agglomerating particles, abrasive carries out the polarity processing due to the heat of friction melting and to each particle outer boundary of inorganic powder, has guaranteed that each single inorganic powder particle outer boundary possesses good consistency.
Said two-rotor continuous mixer in above-mentioned preparation method, its rotor flow tract has the cross directional stretch function, has vertical engagement during running, the divergent function of cross directional stretch.
The present invention adopts stratiform or netted inorganic powder as complex matrix, and under the softening agent condition, by having the two-rotor continuous mixer of cross directional stretch function, the waste or used plastics plastifying fusion embeds stratiform or cancellated inorganic powder forms homogeneous body.Avoided that waste or used plastics complicated component, intensity are low, the defective of poor stability, poor processability.
The present invention is by under the pulpous state condition, abrasive carries out brute force to inorganic powder in colloidal mill disperses, impel fine inorganic powder particle interface fully to contact with abrasive, body material as composite regenerative plastic, fully decentralized superfine powder has great surface-area, and the atomicity that is in the surface is increased, and has increased self activity of particle, increase wettability, intermiscibility, the stability of powder and waste or used plastics, thereby reached reinforcing effect.
The present invention selects the ultra-fine transparent and glossiness inorganic powder of tool as compound main body material, avoided the defectives such as the waste or used plastics appearance luster is gloomy, the transparency is poor, composite regenerative plastic can adapt to the processing for multiple plastics such as film, sheet material, injection mouldings.
The present invention compared with prior art, it is with stratiform or the cancellated ultrafine inorganic powder complex matrix as waste or used plastics, waste or used plastics resides in the inorganic powder structure, form one with inorganic powder, by specific performances such as the distinctive space structure of inorganic powder, the transparency, mobility, the performances such as the intensity that the reprocessed plastic(s) that reduced are good, transparent, gloss, processing are stable, expanded the use range of reprocessed plastic(s), reduced the plastics cost, for the recycling utilization that realizes waste or used plastics has found a new breakthrough mouth.
Embodiment by the following examples is described in further detail foregoing of the present invention again.But this should be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following example.Do not breaking away from the above-mentioned technological thought situation of the present invention, various replacements or change according to ordinary skill knowledge and customary means are made all should comprise within the scope of the invention.
Embodiment
Embodiment 1
With raw material (in total weight parts, as follows) 30 part of 6000 purpose talcum powder, 30 part of 8000 order mica, 8 parts of Microcrystalline Waxes be under 120 ℃ of temperature condition, mix and blend 5min in high-speed mixer, stirring velocity 900r/min, making the complete melting of abrasive and inorganic powder mixed is even jelly; Add colloid mill to grind 10min the pulpous state compound of gained, obtain grinding composite granule; The grinding composite granule that obtains, 28 parts of LDPE, HDPE mixing recycled plastic, 4 parts of boric acid esters are added two-rotor continuous mixer, spinner velocity 200r/min, mixing 10min; Add 5 parts of rare multipolymers of ethene-Xin to continue mixing 3min; Mixing material direct heat feeding is entered extruding and granulating equipment, by exhaust, pelletizing, cooling, obtain composite regenerative plastic.
The composite regenerative plastic that obtains can directly be used the calendered sheet goods, and sheet material is transparent, has good gloss, by test: density 1.25gcm
-3, melt index 2.8g/10min, tensile yield strength 22MPa, modulus in flexure 950MPa, shock strength 5.2kJ/m
2
Embodiment 2
With 35 part of 6000 purpose white carbon black, 25 part of 10000 order barium sulfate, 4 parts of white oils, 6 parts of EVA waxes under 125 ℃ of temperature condition, mix and blend 10min in high-speed mixer, stirring velocity 600r/min, making the complete melting of abrasive and inorganic powder mixed is even jelly; Add colloid mill to grind 15min the pulpous state compound of gained, obtain grinding composite granule; The grinding composite granule that obtains, 20 parts of HDPE recycled plastics, 3 parts of acetyl triethyl citrate, 2 parts of Di Iso Decyl Phthalates are added two-rotor continuous mixer, spinner velocity 100r/min, mixing 10min; Add 8 parts of rare multipolymers of ethene-Xin to continue mixing 3min; Mixing material direct heat feeding is entered extruding and granulating equipment, by exhaust, pelletizing, cooling, obtain composite regenerative plastic.
The composite regenerative plastic that obtains is Blown Film on 45 type inflation film manufacturing machines directly, and face is uniformly dispersed, brilliant white, by testing: melt index 2.2g/10min, longitudinal fracture tensile strength 23MPa, longitudinal fracture elongation 350%.
Embodiment 3
Under 35 part of 6000 purpose vermiculite, 35 part of 8000 purpose agalmatolite, 2 parts of Fischer-Tropsch waxes, 125 ℃ of temperature condition of 4 parts of paraffin, mix and blend 10min in high-speed mixer, stirring velocity 400r/min, making the complete melting of abrasive and inorganic powder mixed is even jelly; Add colloid mill to grind 20min the pulpous state compound of gained, obtain grinding composite granule; The grinding composite granule that obtains, 20 parts of PP, HDPE mixing recycled plastic, 5 parts of glyceryl monostearates, 3 parts of Di Iso Decyl Phthalates are added two-rotor continuous mixer, spinner velocity 100r/min, mixing 10min; Add 5 parts of styrene-butadiene-styrene block copolymers to continue mixing 5min; Mixing material direct heat feeding is entered extruding and granulating equipment, by exhaust, pelletizing, cooling, obtain composite regenerative plastic.
The composite regenerative plastic that obtains can be directly used in injection moulding, and injection-molded item surface smoothing, gloss are good, by test: melt index 7.8g/10min, modulus in flexure 1105MPa, shock strength 5.0kJ/m
2
Embodiment 4
With 30 part of 10000 purpose glass microballon, 35 part of 8000 purpose talcum powder, 6 parts of polyethylene waxs under 140 ℃ of temperature condition, mix and blend 5min in high-speed mixer, stirring velocity 900r/min, making the complete melting of abrasive and inorganic powder mixed is even jelly; Add colloid mill to grind 20min the pulpous state compound of gained, obtain grinding composite granule; The grinding composite granule that obtains, 25 parts of HDPE recycled plastics, 2 parts of phosphoric acid ester, 2 parts of Tegin 55Gs are added two-rotor continuous mixer, spinner velocity 200r/min, mixing 6min; Add 3 parts of rare multipolymers of ethene-Xin to continue mixing 3min; Mixing material direct heat feeding is entered extruding and granulating equipment, by exhaust, pelletizing, cooling, obtain composite regenerative plastic.
The composite regenerative plastic that obtains is blowing multilayer packing membrane on inflation film manufacturing machine directly, face is uniformly dispersed, transparent, have extremely strong gloss, by test: melt index 1.1g/10min, longitudinal fracture tensile strength 27MPa, longitudinal fracture elongation 210%.
Claims (6)
1. composite regenerative plastic, it is characterized in that being comprised of 50-70 part inorganic powder material, 20-40 part waste or used plastics, 5-10 part abrasive, 3-10 part softening agent, 2-8 part toughener by weight, it is that 6000-10000 order, specific refractory power are 1.40-1.60, have one or more in stratiform or cancellated white carbon black, vermiculite, mica, talcum powder, expanded glass microballon, barium sulfate, agalmatolite that wherein said inorganic powder material is selected particle diameter.
2. a kind of composite regenerative plastic according to claim 1, is characterized in that described abrasive refers to one or more in Poly Propylene Wax, polyethylene wax, Microcrystalline Wax, Fischer-Tropsch wax, EVA wax, white oil, paraffin.
3. a kind of composite regenerative plastic according to claim 1, is characterized in that described softening agent refers to one or more in phosphoric acid ester, acetyl triethyl citrate, boric acid ester, glyceryl monostearate, Di Iso Decyl Phthalate.
4. the described composite regenerative plastic of any one according to claim 1 to 3 is characterized in that the preparation method of described composite regenerative plastic carries out in the following manner:
Under 120-140 ℃ of temperature condition, in high-speed mixer mix and blend 5-10 minute, stirring velocity 400-900 turned/min 1' with inorganic powder, abrasive, made that the complete melting of abrasive and inorganic powder are mixed is even jelly;
2' adds shredder to grind 10-20 minute the pulpous state compound of step 1' gained, obtains grinding powder;
3' adds two-rotor continuous mixer with the grinding powder of waste or used plastics, softening agent, step 2' gained, and spinner velocity 100-200 turns/min, and mixing 5-10 minute, the complete plastifying fusion of waste or used plastics embeds stratiform or netted inorganic powder forms homogeneous body;
4' adds toughener in step 3', continues mixing 3-5 minute;
5' enters extruding and granulating equipment with mixing material direct heat feeding in step 4', by exhaust, pelletizing, cooling, obtains composite regenerative plastic.
5. a kind of composite regenerative plastic according to claim 4, is characterized in that the described shredder of step 2' is colloid mill, and abrasive and inorganic powder are ground under the pulpous state condition.
6. a kind of composite regenerative plastic according to claim 4, is characterized in that the described two-rotor continuous mixer of step 3' refers to that rotor flow tract has the cross directional stretch function, has vertical engagement, the divergent function of cross directional stretch during running.
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| CN 201210185628 CN102690460B (en) | 2012-06-07 | 2012-06-07 | Composite recycled plastic and preparation method thereof |
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| CN 201210185628 CN102690460B (en) | 2012-06-07 | 2012-06-07 | Composite recycled plastic and preparation method thereof |
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| CN102690460B true CN102690460B (en) | 2013-11-06 |
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| CN108046823A (en) * | 2018-01-10 | 2018-05-18 | 和县明生环保材料有限责任公司 | A kind of high intensity fired shale-gangue perforated brick |
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| CN114591053A (en) * | 2020-12-04 | 2022-06-07 | 广东景龙建设集团有限公司 | Inorganic cementing material product and preparation method thereof |
| CN113088197A (en) * | 2021-05-20 | 2021-07-09 | 谢文锁 | Polishing wax and preparation method thereof |
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| JP2008184534A (en) * | 2007-01-30 | 2008-08-14 | Yashima Kensetsu Kk | Method for modifying waste composite resin composition |
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| CN1042864A (en) * | 1988-12-03 | 1990-06-13 | 轻工业部塑料加工应用科学研究所 | Semi-hard plastic floor and manufacture method that waste polyethylene is made |
| CN1730266A (en) * | 2005-08-18 | 2006-02-08 | 四川大学 | Method for making disposable tableware by blending modified inorganic powder material and polypropylene |
| CN101367975A (en) * | 2008-08-15 | 2009-02-18 | 黄山华塑新材料科技有限公司 | Wood-plastic composite material and method of preparing the same |
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Effective date of registration: 20160304 Address after: 366100 Datian County of Sanming City Fujian province Jingkou Industrial Zone Patentee after: Sanming City Hong Wah Plastic Technology Co., Ltd. Address before: Qingyang District of Chengdu City, Sichuan province 610091 Dragon Industrial Port East Road 4 Patentee before: Chengdu Xinkeli Chemical Sci-Tech Co., Ltd. |
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