CN104530673A - Biodegradable spunbonded nonwoven fabric slice and preparation method thereof - Google Patents
Biodegradable spunbonded nonwoven fabric slice and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a biodegradable spunbonded nonwoven fabric slice and a preparation method thereof, belonging to the technical field of manufacturing of nonwoven fabrics. The spunbonded nonwoven fabric slice comprises the following components in parts by weight: 50-99 parts of polylactic acid and 1-50 parts of polyolefin. The biodegradable spunbonded nonwoven fabric slice has favorable degradability, and the degradation rate after 30 days reaches 50% above.
Description
Technical field
The present invention relates to a kind of biodegradable spun-bonded non-woven fabrics section and preparation method thereof, belong to non-woven fabrics manufacturing technology field.
Background technology
Non-woven fabrics, also known as tNonwovens, is be made up of orientation or random fiber, has protection against the tide, ventilative, pliable and tough, light weight, not combustion-supporting, easy decomposition, nontoxic, nonirritant, rich color and lower-price characteristic.The production technology of non-woven fabrics mainly contains spun-bond process, meltblown, pulp air-lay process method, pin (water) acupuncture manipulation, chemical adhesion method and heat viscosity method etc.Spun-bond process is also known as filature fleece formation method, and in late 1950s, first Dupont (Du Pont) company studies Spunbonded Nonwovens and patented.In the spunbond course of processing, after the superpolymer of melting is extruded from orifice, cool in freezing air, enter the High Speed Flow Field of extension apparatus, and after strand being stretched by high velocity air and forming continuous filament yarn, solidifying lace curtaining becomes net, and is laid in on lace curtaining, then form spun-bonded non-woven after consolidation device process.
Spun-bonded non-woven has good physicomechanical properties, and considerably beyond staple fibre dry-laid non-woven material, and the fabric made of spun-bond process, mainly for the preparation of the large material of intensity, uses in each engineering of China.Polypropylene (PP) spun-bonded non-woven is using at most with namely abandoning in product; but the solid waste after using is difficult to degraded; huge pressure is brought, so prepare the focus that biodegradable non-woven cloth becomes the development of non-woven industry to the environment protection of China.Liu Qingshan etc. are by PP and Cu
2+the anatase type nano TiO of doping
2blended, the PP spun-bonded non-woven made can be degraded by catalytic photooxidation, accelerates degradation speed.Polynite/PP/PLA complex fiber material that PP section and degradable polymer poly(lactic acid) (PLA) melt blending are made by Zhang Yingchen etc., nano zine oxide/PP/PLA complex fiber material, carbon nanotube/PP/PLA complex fiber material have all possessed good spinnability and biological degradability.PP fiber and the modification of controlled degradation agent melt blending have been made controlled optically and biologically degrading PP fiber and its products by Yang Zhiyun, Jinpeng etc. are at PP fiber surface coating degradation agents titanium dioxide, make PP fiber can auto-degradation, these researchs show that with being prepared degradable nonwoven fabric section by blending and modifying be feasible.
Polypropylene is the main raw material producing non-woven fabrics, accounts for more than 60% of all non-woven fabrics raw materials.But polypropylene belongs to linear saturated hydrocarbon, if its discarded rear burning will produce obnoxious flavour, be difficult to if bury microbiological deterioration occurs.Research finds, after polypropylene fabric is buried in underground 450d, does not observe the phenomenon of strength degradation; Under natural condition through 12 months tan by the sun the intensity still with more than 40%.The photoaging degraded of visible plain polypropylene neither process the effective measure of polypropylene waste gurry.Therefore, huge pressure is brought as environment-friendly shopping bag and the waste of the polypropylene non-woven cloth material namely abandoning product such as disposable hygienic and medical treatment to environment protection in a large number.For this reason, the degradable research of polypropylene spun-bonded non-woven fabrics material scrap thing, has become one of focus of research at present.
Poly(lactic acid) (PLA) has good mechanical property, biocompatibility and thermotolerance, is a kind of Green Product of novel totally biodegradable.But because PLA is a kind of hemicrystalline superpolymer, percent crystallization in massecuite is low, hardness is comparatively large, and processing heat stability is poor, processing temperature window narrows etc., is applied and is subject to a definite limitation with Nonwovens Field, carry out to it focus that modification is just becoming research.
Summary of the invention
The present invention, by the performance of balanced each component, learns from other's strong points to offset one's weaknesses, and eliminates the weakness in each one-component performance, obtains the biodegradable spun-bonded non-woven fabrics section that over-all properties is desirable, solves the problems referred to above.
The invention provides a kind of biodegradable spun-bonded non-woven fabrics section, described spun-bonded non-woven fabrics section, by weight, comprises following component:
Poly(lactic acid) 50 ~ 99;
Polyolefine 1 ~ 50.
Spun-bonded non-woven fabrics section of the present invention, by weight, is preferably made up of following component:
Spun-bonded non-woven fabrics section of the present invention, by weight, is more preferably made up of following component:
Poly(lactic acid) of the present invention is preferably at least one in Poly-L-lactic acid and dextrorotation poly(lactic acid), and the number-average molecular weight of poly(lactic acid) is 10000 ~ 500000Da, and second-order transition temperature is 30 ~ 100 DEG C, and fusing point is 120 ~ 280 DEG C, and tensile strength is 20 ~ 80MPa.
The number-average molecular weight more preferably 50000 ~ 400000Da of poly(lactic acid) of the present invention.
Polyolefine of the present invention is preferably by C
2~ C
6alkene at least one autohemagglutination or copolymerization form, and described polyolefine melting index under temperature 230 DEG C, nominal load 2160g be 5 ~ 200g/10min, tensile strength is 10 ~ 80MPa, elongation at break is 5 ~ 200%.
Polyolefine of the present invention is more preferably formed by least one autohemagglutination in ethene, propylene, butylene and amylene or copolymerization.
Inorganic particulate of the present invention is preferably at least one in calcium carbonate, kaolin, metakaolin, magnesiumcarbonate, wilkinite, barium sulfate, polynite, nano-calcium carbonate, nano kaoline, nanometer metakaolin, nano-calcium carbonate magnesium, nano-bentonite, nano barium sulfate and nano imvite.
Expanding material of the present invention is preferably the grafts of at least one graft polyolefin in unsaturated acid anhydride, vinylformic acid, methacrylic acid, acrylate, vinylbenzene, acrylamide and glycidyl methacrylate, or the multipolymer of unsaturated acid anhydride, vinylformic acid, methacrylic acid, acrylate, vinylbenzene, acrylamide, at least one in glycidyl methacrylate and alkene, or carboxyted polypropylene, or hydroxylation polypropylene, or silane coupling agent.
End-capping reagent of the present invention is preferably at least one in acid anhydrides, acid anhydride-grafted thing, phthalic anhydride, naphthalene acid anhydride and Di-n-Butyl Amine, described acid anhydrides more preferably maleic anhydride, described acid anhydride-grafted thing more preferably maleic anhydride grafts.
Initiator of the present invention is preferably at least one in azo compound, superoxide and persulphate, described azo compound more preferably Diisopropyl azodicarboxylate, described superoxide is benzoyl peroxide, dicumyl peroxide or lauroyl peroxide more preferably, and described persulphate is ammonium persulphate or Potassium Persulphate more preferably.
Heat-resisting stabilizing agent of the present invention is preferably at least one in polynite, organo montmorillonite, nano silicon, kaolin and zinc oxide.
Slipping agent of the present invention is preferably at least one in erucicamide, stearylamide, Zinic stearas and amine hydroxybenzene.
Biodegradation promotor of the present invention is preferably at least one in oxalic acid and citric acid.
Photolysis agent of the present invention is preferably at least one in st-yrax monoalky lether, thioxanthone, benzophenone, benzoin dimethylether and 1 ~ hydroxycyclohexyl phenyl ketone.
The present invention's object is on the other hand the preparation method providing the spun-bonded non-woven fabrics described in the invention described above to cut into slices, described preparation method is first that each component is dry, by agreement parts by weight again by melt blending after dried each component mixing, obtain blend, extruding pelletization after finally being pulverized by blend.
Drying conditions of the present invention is preferably 30 ~ 80 DEG C of drying 2 ~ 48h.
Mixing condition of the present invention preferably mixes in high-speed mixer, more preferably mixes in high speed disintegrator.
Melt blending condition optimization of the present invention is melt blending in mixing facilities, more preferably melt blending in Banbury mixer, single screw extrusion machine or twin screw extruder.
Melt blending temperature of the present invention is preferably 100 ~ 260 DEG C.
Pulverization conditions of the present invention is preferably pulverized in high-speed mixer, more preferably pulverizes in high speed disintegrator.
Extruding pelletization of the present invention is preferably by single screw extrusion machine or twin screw extruder extruding pelletization, more preferably in the hopper blanking of single screw extrusion machine or twin screw extruder, extrude from a district, through 2nd district, 3rd district, 4th district to die head extruding pelletization, described district's temperature is 100 ~ 200 DEG C, and two district's temperature are 120 ~ 220 DEG C, three district's temperature are 140 ~ 240 DEG C, four district's temperature are 150 ~ 250 DEG C, and die head temperature is 160 ~ 260 DEG C, and rotating speed is 5 ~ 200r/min.
Beneficial effect of the present invention is:
1. biodegradable spun-bonded non-woven fabrics section degradation property of the present invention is good, and the degradation rate of 30 days reaches more than 50%;
2. the tensile strength of biodegradable spun-bonded non-woven fabrics section of the present invention reaches more than 60MPa, melting index is 20 ~ 100g/10min, second-order transition temperature reaches more than 60 DEG C, and 5% heat decomposition temperature reaches more than 350 DEG C, can be used as spun-bonded non-woven raw material;
3. biodegradable spun-bonded non-woven fabrics section of the present invention can be widely used in preparing the material such as biodegradable spun-bonded non-woven fabrics, SMS non-woven fabrics.
Embodiment
Following non-limiting example can make the present invention of those of ordinary skill in the art's comprehend, but does not limit the present invention in any way.
Poly(lactic acid) pellet described in following embodiment is purchased from Natural works company of the U.S., and number-average molecular weight is 250000Da, and tensile strength is 30 ~ 40MPa, and elongation at break is 10 ~ 70%, and second-order transition temperature is 55 ~ 60 DEG C, and fusing point is 155 ~ 170 DEG C.
Described in following embodiment, polyethylene is purchased from Maoming Petrochemical, trade mark DFDA-7042, and melt flow rate (MFR) is 2 ~ 30g/10min, tensile break strength >=12MPa, tensile yield strength >=8MPa (experimental temperature is 230 DEG C, and nominal load is 2160g).
Polypropylene described in following embodiment is purchased from Li Ande Basel industrial group, trade mark moplen HP552R, melt flow rate (MFR) is 19.1g/10min, number-average molecular weight is 120000Da, isotatic polypropylene content is 90 ~ 95%, tensile strength is 31.25MPa, and elongation at break is 38.60% (experimental temperature is 230 DEG C, and nominal load is 2160g).
Embodiment 1
A preparation method for biodegradable spun-bonded non-woven fabrics section, described preparation method is first by poly(lactic acid), polyethylene, nano-calcium carbonate, maleic anhydride styrene graft polypropylene, acrylic acid-grafted polypropylene, silane coupling agent, maleic anhydride, dicumyl peroxide, nano silicon, erucicamide, citric acid and st-yrax monoalky lether be 60 DEG C of dry 12h in an oven, by weight again by the poly(lactic acid) of dried 90 parts, the polyethylene of 10 parts, the nano-calcium carbonate of 15 parts, the maleic anhydride styrene graft polypropylene of 5 parts, the acrylic acid-grafted polypropylene of 5 parts, the silane coupling agent of 3 parts, the maleic anhydride of 4 parts, the dicumyl peroxide of 0.02 part, the nano silicon of 1.5 parts, the erucicamide of 0.5 part, the st-yrax monoalky lether of the citric acid of 1 part and 0.1 part to mix after 0.5min melt blending in single screw extrusion machine in high speed disintegrator, melt blending temperature is 165 DEG C, obtain blend, be the hopper blanking of the twin screw extruder of 40:1 in length-to-diameter ratio after finally blend being pulverized in high speed disintegrator 2min, extrude from a district, through 2nd district, 3rd district, 4th district are to die head extruding pelletization, and described district's temperature is 150 DEG C, and two district's temperature are 170 DEG C, and three district's temperature are 175 DEG C, and four district's temperature are 170 DEG C, and die head temperature is 160 DEG C, and rotating speed is 120r/min.
Embodiment 2
A preparation method for biodegradable spun-bonded non-woven fabrics section, described preparation method is first by poly(lactic acid), polypropylene, nano-calcium carbonate, maleic anhydride styrene graft polypropylene, acrylic acid-grafted polypropylene, silane coupling agent, maleic anhydride, dicumyl peroxide, nano silicon, erucicamide, citric acid and st-yrax monoalky lether be 45 DEG C of dry 24h in an oven, by weight again by the poly(lactic acid) of dried 80 parts, the polypropylene of 20 parts, the nano-calcium carbonate of 15 parts, the maleic anhydride styrene graft polypropylene of 5 parts, the acrylic acid-grafted polypropylene of 5 parts, the silane coupling agent of 3 parts, the maleic anhydride of 4 parts, the dicumyl peroxide of 0.02 part, the nano silicon of 1.5 parts, the erucicamide of 0.5 part, the st-yrax monoalky lether of the citric acid of 1 part and 0.1 part to mix after 2min melt blending in single screw extrusion machine in high speed disintegrator, melt blending temperature is 170 DEG C, obtain blend, be the hopper blanking of the twin screw extruder of 40:1 in length-to-diameter ratio after finally blend being pulverized in high speed disintegrator 5min, extrude from a district, through 2nd district, 3rd district, 4th district are to die head extruding pelletization, and described district's temperature is 160 DEG C, and two district's temperature are 180 DEG C, and three district's temperature are 185 DEG C, and four district's temperature are 165 DEG C, and die head temperature is 165 DEG C, and rotating speed is 110r/min.
Embodiment 3
A preparation method for biodegradable spun-bonded non-woven fabrics section, described preparation method is first by poly(lactic acid), polyethylene, nano barium sulfate, maleic anhydride inoculated polypropylene, carboxyted polypropylene, Di-n-Butyl Amine, benzoyl peroxide, polynite, zinc oxide, amine hydroxybenzene, oxalic acid, benzophenone and 1-hydroxycyclohexyl phenyl ketone be 65 DEG C of dry 12h in an oven, by weight again by the poly(lactic acid) of dried 70 parts, the polyethylene of 30 parts, the nano barium sulfate of 30 parts, the maleic anhydride inoculated polypropylene of 6 parts, the carboxyted polypropylene of 6 parts, the Di-n-Butyl Amine of 2 parts, the benzoyl peroxide of 0.01 part, the polynite of 5 parts, the zinc oxide of 0.5 part, the amine hydroxybenzene of 0.5 part, the oxalic acid of 0.3 part, the 1-hydroxycyclohexyl phenyl ketone of the benzophenone of 0.2 part and 0.2 part to mix after 3min melt blending in Banbury mixer in high speed disintegrator, melt blending temperature is 175 DEG C, obtain blend, be the hopper blanking of the twin screw extruder of 40:1 in length-to-diameter ratio after finally blend being pulverized in high speed disintegrator 3min, extrude from a district, through 2nd district, 3rd district, 4th district are to die head extruding pelletization, and described district's temperature is 160 DEG C, and two district's temperature are 185 DEG C, and three district's temperature are 195 DEG C, and four district's temperature are 190 DEG C, and die head temperature is 165 DEG C, and rotating speed is 100r/min.
Embodiment 4
A preparation method for biodegradable spun-bonded non-woven fabrics section, described preparation method is first by poly(lactic acid), polypropylene, nano imvite, glycidyl methacrylate-styrene-grafted polypropylene, styrene-grafted polypropylene, ethylene acrylic acid co polymer, phthalic anhydride, naphthalene acid anhydride, lauroyl peroxide, kaolin, organo montmorillonite, Zinic stearas, stearylamide, citric acid, thioxanthone and benzoin dimethylether be 70 DEG C of dry 12h in an oven, by weight again by the poly(lactic acid) of dried 60 parts, the polypropylene of 40 parts, the nano imvite of 40 parts, glycidyl methacrylate-the styrene-grafted polypropylene of 3 parts, the styrene-grafted polypropylene of 5 parts, the ethylene acrylic acid co polymer of 2 parts, the phthalic anhydride of 4 parts, the naphthalene acid anhydride of 4 parts, the lauroyl peroxide of 0.1 part, the kaolin of 1 part, the organo montmorillonite of 1 part, the Zinic stearas of 1 part, the stearylamide of 1 part, the citric acid of 2 parts, the benzoin dimethylether of the thioxanthone of 0.5 part and 0.5 part to mix after 5min melt blending in single screw extrusion machine in high speed disintegrator, melt blending temperature is 180 DEG C, obtain blend, be the hopper blanking of the single screw extrusion machine of 40:1 in length-to-diameter ratio after finally blend being pulverized in high speed disintegrator 4min, extrude from a district, through 2nd district, 3rd district, 4th district are to die head extruding pelletization, and described district's temperature is 170 DEG C, and two district's temperature are 190 DEG C, and three district's temperature are 190 DEG C, and four district's temperature are 180 DEG C, and die head temperature is 170 DEG C, and rotating speed is 100r/min.
Embodiment 5
A preparation method for biodegradable spun-bonded non-woven fabrics section, described preparation method is first by poly(lactic acid), polyethylene, nano-calcium carbonate, nano barium sulfate, maleic anhydride inoculated polypropylene, ethylene propylene copolymer, Di-n-Butyl Amine, maleic anhydride, lauroyl peroxide, kaolin, zinc oxide, Zinic stearas, stearylamide, citric acid and st-yrax monoalky lether be 45 DEG C of dry 10h in an oven, by weight again by the poly(lactic acid) of dried 50 parts, the polyethylene of 50 parts, the nano-calcium carbonate of 15 parts, the nano barium sulfate of 15 parts, the maleic anhydride inoculated polypropylene of 2 parts, the ethylene propylene copolymer of 2 parts, the Di-n-Butyl Amine of 5 parts, the maleic anhydride of 1 part, the lauroyl peroxide of 0.05 part, the kaolin of 0.5 part, the zinc oxide of 0.5 part, the Zinic stearas of 0.5 part, the stearylamide of 1 part, the st-yrax monoalky lether of the citric acid of 2 parts and 0.8 part to mix after 0.5min melt blending in single screw extrusion machine in high speed disintegrator, melt blending temperature is 175 DEG C, obtain blend, be the hopper blanking of the twin screw extruder of 40:1 in length-to-diameter ratio after finally blend being pulverized in high speed disintegrator 3min, extrude from a district, through 2nd district, 3rd district, 4th district are to die head extruding pelletization, and described district's temperature is 170 DEG C, and two district's temperature are 190 DEG C, and three district's temperature are 190 DEG C, and four district's temperature are 180 DEG C, and die head temperature is 170 DEG C, and rotating speed is 90r/min.
Biodegradable spun-bonded non-woven fabrics section embodiment 1 ~ 5 prepared, poly(lactic acid), polyethylene and polypropylene adopt xlw intelligence minor tension tester test mechanical property, specimen size is as follows: length is 100 ± 5mm, width is 10 ± 2mm, thickness is 1 ± 0.2mm, trial speed is 50mm/min, experiment repetition 3 times, average, test result is in table 1.
Biodegradable spun-bonded non-woven fabrics section embodiment 1 ~ 5 prepared, poly(lactic acid), polyethylene and polypropylene adopt RL218-Melt Flow Rate Measurer to measure melt flow rate (MFR), and experimental temperature is 210 DEG C, and nominal load is 2160g, and measurement result is in table 1.
Biodegradable spun-bonded non-woven fabrics section, poly(lactic acid), polyethylene prepared by table 1 embodiment 1 ~ 5 and polyacrylicly to draw
Stretch intensity and melting index
Conclusion: the melting index of biodegradable spun-bonded non-woven fabrics section prepared by embodiment 1 ~ 5, at 20 ~ 100g/10min, is suitable as spunbond material and uses.
Biodegradable spun-bonded non-woven fabrics section embodiment 1 ~ 5 prepared, poly(lactic acid), polyethylene and polypropylene adopt TA Q600 thermogravimetric analyzer to carry out thermogravimetric analysis, biodegradable spun-bonded non-woven fabrics section 10mg embodiment 1 ~ 5 prepared, poly(lactic acid), polyethylene and polypropylene load in thermobalance sample pool, pass into high-purity N
2purge, from 30 DEG C, with the temperature rise rate of 10 DEG C/min, be warming up to 500 DEG C, analytical results is in table 2.
Embodiment 1 ~ 5 prepare biodegradable spun-bonded non-woven fabrics section, poly(lactic acid), polyethylene and polyacrylic differential scanning calorimetric analysis employing TA Q100 thermal analyzer, sweep velocity is 10 DEG C/min, and probe temperature is-50 ~ 200 DEG C, and analytical results is in table 2.
Table 2 embodiment 1 ~ 5 prepare biodegradable spun-bonded non-woven fabrics section, poly(lactic acid), polyethylene and polyacrylic degraded situation
Conclusion: the thermostability of biodegradable spun-bonded non-woven fabrics section prepared by embodiment 1 ~ 5 is improved than poly(lactic acid); Biodegradable spun-bonded non-woven fabrics section prepared by embodiment 1 ~ 5 has degradation property than polyethylene and polypropylene.
The above embodiment is only that protection scope of the present invention is not limited thereto in order to absolutely prove the preferred embodiment that the present invention lifts.The equivalent alternative or conversion that those skilled in the art do on basis of the present invention, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (7)
1. a biodegradable spun-bonded non-woven fabrics section, is characterized in that: described spun-bonded non-woven fabrics section, by weight, comprises following component:
Poly(lactic acid) 50 ~ 99;
Polyolefine 1 ~ 50.
2. spun-bonded non-woven fabrics section according to claim 1, is characterized in that: described spun-bonded non-woven fabrics section, by weight, is made up of following component:
3. spun-bonded non-woven fabrics section according to claim 1, is characterized in that: described spun-bonded non-woven fabrics section, by weight, is made up of following component:
4. spun-bonded non-woven fabrics section according to claim 1, it is characterized in that: described poly(lactic acid) is at least one in Poly-L-lactic acid and dextrorotation poly(lactic acid), the number-average molecular weight of poly(lactic acid) is 10000 ~ 500000Da, second-order transition temperature is 30 ~ 100 DEG C, fusing point is 120 ~ 280 DEG C, and tensile strength is 20 ~ 80MPa.
5. spun-bonded non-woven fabrics section according to claim 1, is characterized in that: described polyolefine is by C
2~ C
6alkene at least one autohemagglutination or copolymerization form, and described polyolefine melting index under temperature 230 DEG C, nominal load 2160g be 5 ~ 200g/10min, tensile strength is 10 ~ 80MPa, elongation at break is 5 ~ 200%.
6. spun-bonded non-woven fabrics section according to claim 1, is characterized in that: described inorganic particulate is at least one in calcium carbonate, kaolin, metakaolin, magnesiumcarbonate, wilkinite, barium sulfate, polynite, nano-calcium carbonate, nano kaoline, nanometer metakaolin, nano-calcium carbonate magnesium, nano-bentonite, nano barium sulfate and nano imvite.
7. the preparation method of the spun-bonded non-woven fabrics section described in claim 1,2,3,4,5 or 6, it is characterized in that: described preparation method is for first dry by each component, by agreement parts by weight again by melt blending after dried each component mixing, obtain blend, extruding pelletization after finally being pulverized by blend.
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| CN106367893A (en) * | 2016-08-30 | 2017-02-01 | 山东胜伟园林科技有限公司 | Bio-degradable non-woven fabric material and preparation method thereof |
| CN107955351A (en) * | 2017-12-12 | 2018-04-24 | 大连理创科技有限公司 | Degradable spun-bonded non-woven fabrics master batch of a kind of medical antibacterial and preparation method thereof |
| CN108587090A (en) * | 2018-04-12 | 2018-09-28 | 海南大学 | Biodegradable antistatic polylactic acid non-woven fabrics slice of one kind and preparation method thereof |
| CN110358189A (en) * | 2019-07-18 | 2019-10-22 | 广东一龙新材料科技有限公司 | A kind of non-woven fabrics softness master batch and preparation method thereof |
| CN111838811A (en) * | 2020-07-20 | 2020-10-30 | 中物科技新材料(深圳)有限公司 | Biodegradable mask and manufacturing method thereof |
| CN112080855A (en) * | 2020-09-16 | 2020-12-15 | 宿州衣尔雅无纺布有限公司 | Antibacterial nano medical non-woven fabric |
| CN112841764A (en) * | 2021-01-06 | 2021-05-28 | 江苏阳光医用新材料有限公司 | Degradable protective clothing and manufacturing method thereof |
| CN115449155A (en) * | 2022-08-24 | 2022-12-09 | 云阳金田塑业有限公司 | Degradable polypropylene non-adhesive film and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106367893A (en) * | 2016-08-30 | 2017-02-01 | 山东胜伟园林科技有限公司 | Bio-degradable non-woven fabric material and preparation method thereof |
| CN107955351A (en) * | 2017-12-12 | 2018-04-24 | 大连理创科技有限公司 | Degradable spun-bonded non-woven fabrics master batch of a kind of medical antibacterial and preparation method thereof |
| CN108587090A (en) * | 2018-04-12 | 2018-09-28 | 海南大学 | Biodegradable antistatic polylactic acid non-woven fabrics slice of one kind and preparation method thereof |
| CN108587090B (en) * | 2018-04-12 | 2019-10-18 | 海南大学 | Biodegradable antistatic polylactic acid non-woven fabrics slice of one kind and preparation method thereof |
| CN110358189A (en) * | 2019-07-18 | 2019-10-22 | 广东一龙新材料科技有限公司 | A kind of non-woven fabrics softness master batch and preparation method thereof |
| CN110358189B (en) * | 2019-07-18 | 2022-04-12 | 广东一龙新材料科技有限公司 | Non-woven fabric soft master batch and preparation method thereof |
| CN111838811A (en) * | 2020-07-20 | 2020-10-30 | 中物科技新材料(深圳)有限公司 | Biodegradable mask and manufacturing method thereof |
| CN112080855A (en) * | 2020-09-16 | 2020-12-15 | 宿州衣尔雅无纺布有限公司 | Antibacterial nano medical non-woven fabric |
| CN112841764A (en) * | 2021-01-06 | 2021-05-28 | 江苏阳光医用新材料有限公司 | Degradable protective clothing and manufacturing method thereof |
| CN115449155A (en) * | 2022-08-24 | 2022-12-09 | 云阳金田塑业有限公司 | Degradable polypropylene non-adhesive film and preparation method thereof |
| CN115449155B (en) * | 2022-08-24 | 2024-03-15 | 云阳金田塑业有限公司 | Degradable polypropylene non-adhesive film and preparation method thereof |
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