CN106589775A - Lining plastic bag for p-phenylenediamine packaging - Google Patents
Lining plastic bag for p-phenylenediamine packaging Download PDFInfo
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- CN106589775A CN106589775A CN201611167246.3A CN201611167246A CN106589775A CN 106589775 A CN106589775 A CN 106589775A CN 201611167246 A CN201611167246 A CN 201611167246A CN 106589775 A CN106589775 A CN 106589775A
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- phenylenediamine
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
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Abstract
The invention discloses a lining plastic bag for p-phenylenediamine packaging, and relates to the technical field of chemical packaging. The lining plastic bag is prepared from, by weight, 15-20 parts of acrylonitrile-butadiene-styrene copolymer, 10-15 parts of linear low density polyethylene, 5-10 parts of polyvinyl chloride resin, 5-10 parts of C5 hydrogenation petroleum resin, 3-6 parts of polyoxyethylene, 3-6 parts of powdered nitrile rubber, 2-3 parts of pentaerythritol ester of hydogenated rosin, 2-3 parts of a static electricity remover, 1-2 parts of petroleum coke micropowder, 1-2 parts of hydrogenated palm oil, 1-2 parts of wool alcohol, 0.5-1 part of poly diallyldimethylammonium chloride, 0.5-1 part of nano-zinc oxide and 0.05-0.1 part of yttrium oxide. According to the lining plastic bag, the sealing performance is good, the packaged p-phenylenediamine can be in the drying environment isolated from outside air, and p-phenylenediamine powder is prevented from being greatly adsorbed to the inner wall of the plastic bag by removing static electricity.
Description
Technical field：
The present invention relates to chemicals packing technique field, and in particular to a kind of p-phenylenediamine packaging inner lining plastic bag.
Background technology：
P-phenylenediamine is one of simplest aromatic diamines, is also a kind of wide variety of intermediate, can be used to produce idol
Nitrogen dyestuff, high molecular polymer, it can also be used to produce fur dyeing agent, rubber antioxidant and photo development agent.P-phenylenediamine is also
It is the sensitive reagents of conventional inspection ferrum and copper.P-phenylenediamine is particularly important dyestuff intermediate, is mainly used in aramid fiber, azo
Dyestuff, sulfur dye, acid stain etc..
P-phenylenediamine outward appearance to blush to taupe, is exposed for white, therefore necessary lucifuge,
Sealing, kept dry.Typically packed using barreled mode as the p-phenylenediamine that intermediate is used in a large number, it is close in order to ensure
Feng Xing, it will usually the inner lining plastic bag in pail pack.But common plasticses bag haves the shortcomings that the easy-adhesion p-phenylenediamine of bag wall, use
A small amount of p-phenylenediamine is attached with plastic bag bag wall after complete p-phenylenediamine, this increased difficulty to the recycling of plastic bag,
And reclaim personnel to be such as not added with, to protect, a small amount of p-phenylenediamine powder body being sucked, it is healthy so as to affect.
The content of the invention：
The technical problem to be solved is to provide a kind of good airproof performance and p-phenylenediamine powder can be prevented a large amount of
The p-phenylenediamine packaging inner lining plastic bag of adhesion.
The technical problem to be solved is realized using following technical scheme：
A kind of p-phenylenediamine packaging inner lining plastic bag, is made up of the raw material of following parts by weight：
Acrylonitrile-butadiene-styrene copolymer 15-20 parts, linear low density polyethylene 10-15 part, polrvinyl chloride tree
Fat 5-10 parts, C5 hydrogenated petroleum resin 5-10 parts, polyethylene glycol oxide 3-6 parts, PNBR 3-6 parts, hydrogenated rosin season penta
Four alcohol ester 2-3 parts, electrical static eliminator 2-3 parts, petroleum coke micropowder 1-2 parts, hydrogenated palm oil 1-2 part, lanonol 1-2 parts, poly- two
Allyl dimethyl ammonium chloride 0.5-1 parts, nano zine oxide 0.5-1 parts, yittrium oxide 0.05-0.1 parts.
Its preparation method comprises the steps：
(1) Corvic and PNBR are added in acrylonitrile-butadiene-styrene copolymer, first with 5
DEG C/programming rate of min is warming up to 55-60 DEG C of insulation mixing 15min, then is warming up to 120- with the programming rate of 10 DEG C/min
130 DEG C of insulation mixing 25min, are subsequently adding hydrogenated rosin tetramethylolmethane and petroleum coke micropowder, continue to be incubated at 120-130 DEG C
Mixing 15min, and room temperature is naturally cooled to, obtain final product material I；
(2) C5 hydrogenated petroleum resins and polyethylene glycol oxide are added in linear low density polyethylene, with the intensification of 5 DEG C/min
Speed is warming up to 120-125 DEG C of insulation mixing 30min, then adds hydrogenated palm oil and lanonol while hot, is sufficiently mixed, and naturally
Room temperature is cooled to, material II is obtained final product；
(3) electrical static eliminator, diallyl dimethyl ammoniumchloride and nano zine oxide are added in material I, and with 10
DEG C/programming rate of min is warming up to 110-120 DEG C of insulation mixing 15min, and material II and yittrium oxide are added, is sufficiently mixed, institute
Mixture send into kneading machine in 5min is kneaded at 115-120 DEG C, most after Jing blow moldings be obtained inner lining plastic bag.
The electrical static eliminator is made up of the raw material of following parts by weight：Dcpd resin 5-10 parts, polyvinyl alcohol
Butyral 3-5 parts, microwax 2-3 parts, hydrolytic polymaleic anhydride 2-3 part, ultra-fine polytetrafluorethylepowder powder 1-2 parts, sulfurized lard
1-2 parts, vaseline 0.5-1 parts, nanometer titanium dioxide 0.5-1 parts, its preparation method is：First add in dcpd resin and gather
Vinyl butyral and microwax, are warming up to 120-125 DEG C of insulation mixing 15min with the programming rate of 5 DEG C/min, add super
Thin polytetrafluorethylepowder powder and sulfurized lard, continue the insulation mixing 10min at 120-125 DEG C, then with the cooling of 5 DEG C/min
Speed is cooled to 65-70 DEG C, and adds hydrolytic polymaleic anhydride, vaseline and nanometer titanium dioxide, the insulation mixing at 65-70 DEG C
Continue to be warming up to 115-120 DEG C of insulation mixing 5min, gained mixture natural cooling with the programming rate of 5 DEG C/min after 10min
To room temperature, most after Jing super micron mill make powder.
Using front through pretreatment, its processing method is the lanonol：Oleum Terebinthinae and camellia oleosa seed powder are added in lanonol,
15min is stood after being sufficiently mixed, microwave treater microwave treater 5min is recycled, is cooled to the cooling rate of 5 DEG C/min
55-60 DEG C, polyvinylpolypyrrolidone and trihydroxymethylpropanyltri diglycidyl ether are subsequently adding, after mix homogeneously, continue microwave treatment
5min, during gained mixture adds 45-50 DEG C of water, is warming up to reflux state guarantor with the programming rate of 10 DEG C/min after being uniformly dispersed
Temperature mixing 10min, finally sends in spray dryer, is dried gained particulate abrasive into powder.
The matter of the lanonol, Oleum Terebinthinae, camellia oleosa seed powder, polyvinylpolypyrrolidone, trihydroxymethylpropanyltri diglycidyl ether and water
Amount amount ratio is 10-15:0.5-1:0.1-0.3:0.5-1:0.3-0.5:30-50.
The microwave frequency of the microwave treater is 2450MHz, power is 700W.
Lanonol not only effectively removes its different smell, moreover it is possible to reduce fragility when which lets cool by above-mentioned pretreatment.
The invention has the beneficial effects as follows：The present invention is aided with acrylonitrile-butadiene-styrene copolymer as primary raw material
Linear low density polyethylene and various auxiliary agents are obtained p-phenylenediamine packaging inner lining plastic bag, the sealing of the inner lining plastic bag
It is good, during dry environment of the packaged p-phenylenediamine in isolating with outside air can be made, p-phenylenediamine is prevented in air effect
It is lower to decompose discoloration, so as to ensure the packaging quality of p-phenylenediamine；And by eliminating powder electrostatic, it is to avoid p-phenylenediamine powder is big
Amount sticks to plastic bag inwall, so as to reduce inner lining plastic bag loss amount and the recycling beneficial to plastic bag.
Specific embodiment：
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, tie below
Specific embodiment is closed, the present invention is expanded on further.
Embodiment 1
(1) 5 parts of Corvics of addition and 3 parts of powdered nitrile rubbers in 20 parts of acrylonitrile-butadiene-styrene copolymers
Rubber, is first warming up to 55-60 DEG C of insulation mixing 15min with the programming rate of 5 DEG C/min, then with the programming rate liter of 10 DEG C/min
Temperature is subsequently adding 3 parts of hydrogenated rosin tetramethylolmethanes and 1 part of petroleum coke micropowder, continues to 120-130 DEG C of insulation mixing 25min
Insulation mixing 15min at 120-130 DEG C, and room temperature is naturally cooled to, obtain final product material I；
(2) 5 parts of C5 hydrogenated petroleum resins and 4 parts of polyethylene glycol oxides are added in 10 parts of linear low density polyethylene, with 5
DEG C/programming rate of min is warming up to 120-125 DEG C of insulation mixing 30min, then adds 2 parts of hydrogenated palm oil and 1 part of Pilus Caprae seu Ovis while hot
Alcohol, is sufficiently mixed, and naturally cools to room temperature, obtains final product material II；
(3) 2 parts of electrical static eliminators, 0.5 part of diallyl dimethyl ammoniumchloride and 0.5 part of nanometer of addition in material I
Zinc Oxide, and 110-120 DEG C of insulation mixing 15min is warming up to the programming rate of 10 DEG C/min, add material II and 0.05
Part yittrium oxide, is sufficiently mixed, and gained mixture kneads 5min at 115-120 DEG C in sending into kneading machine, most after Jing blow moldings
Prepared inner lining plastic bag.
The preparation of electrical static eliminator：First add in 6 parts of dcpd resins 3 parts of polyvinyl butyral resins and 2 parts it is micro-
Brilliant wax, is warming up to 120-125 DEG C of insulation mixing 15min with the programming rate of 5 DEG C/min, adds 1 part of ultra-fine politef
Powder and 1 part of sulfurized lard, are continued the insulation mixing 10min at 120-125 DEG C, are then lowered the temperature with the cooling rate of 5 DEG C/min
To 65-70 DEG C, and 2 parts of hydrolytic polymaleic anhydride, 0.5 part of vaseline and 0.5 part of nanometer titanium dioxide are added, protected at 65-70 DEG C
Continue to be warming up to 115-120 DEG C of insulation mixing 5min with the programming rate of 5 DEG C/min after temperature mixing 10min, gained mixture is certainly
So be cooled to room temperature, most after Jing super micron mill make powder.
The pretreatment of lanonol：0.5 part of Oleum Terebinthinae and 0.1 part of camellia oleosa seed powder are added in 15 parts of lanonols, after being sufficiently mixed
15min is stood, microwave frequency 2450MHz, the microwave treater microwave treater 5min of power 700W is recycled, with 5 DEG C/min
Cooling rate be cooled to 55-60 DEG C, be subsequently adding 1 part of polyvinylpolypyrrolidone and 0.3 part of trihydroxymethylpropanyltri diglycidyl ether,
Continue microwave treatment 5min after mix homogeneously, during gained mixture adds 50 parts of 45-50 DEG C of water, with 10 DEG C/min after being uniformly dispersed
Programming rate be warming up to reflux state insulation mixing 10min, finally send into spray dryer in, be dried gained particulate abrasive into
Powder.
Embodiment 2
(1) 5 parts of Corvics of addition and 3 parts of powdered nitrile rubbers in 20 parts of acrylonitrile-butadiene-styrene copolymers
Rubber, is first warming up to 55-60 DEG C of insulation mixing 15min with the programming rate of 5 DEG C/min, then with the programming rate liter of 10 DEG C/min
Temperature is subsequently adding 2 parts of hydrogenated rosin tetramethylolmethanes and 1 part of petroleum coke micropowder, continues to 120-130 DEG C of insulation mixing 25min
Insulation mixing 15min at 120-130 DEG C, and room temperature is naturally cooled to, obtain final product material I；
(2) 5 parts of C5 hydrogenated petroleum resins and 4 parts of polyethylene glycol oxides are added in 10 parts of linear low density polyethylene, with 5
DEG C/programming rate of min is warming up to 120-125 DEG C of insulation mixing 30min, then adds 1 part of hydrogenated palm oil and 1 part of Pilus Caprae seu Ovis while hot
Alcohol, is sufficiently mixed, and naturally cools to room temperature, obtains final product material II；
(3) 3 parts of electrical static eliminators, 0.5 part of diallyl dimethyl ammoniumchloride and 0.5 part of nanometer of addition in material I
Zinc Oxide, and 110-120 DEG C of insulation mixing 15min is warming up to the programming rate of 10 DEG C/min, add material II and 0.05
Part yittrium oxide, is sufficiently mixed, and gained mixture kneads 5min at 115-120 DEG C in sending into kneading machine, most after Jing blow moldings
Prepared inner lining plastic bag.
The preparation of electrical static eliminator：First add in 8 parts of dcpd resins 3 parts of polyvinyl butyral resins and 2 parts it is micro-
Brilliant wax, is warming up to 120-125 DEG C of insulation mixing 15min with the programming rate of 5 DEG C/min, adds 1 part of ultra-fine politef
Powder and 1 part of sulfurized lard, are continued the insulation mixing 10min at 120-125 DEG C, are then lowered the temperature with the cooling rate of 5 DEG C/min
To 65-70 DEG C, and 3 parts of hydrolytic polymaleic anhydride, 0.5 part of vaseline and 0.5 part of nanometer titanium dioxide are added, protected at 65-70 DEG C
Continue to be warming up to 115-120 DEG C of insulation mixing 5min with the programming rate of 5 DEG C/min after temperature mixing 10min, gained mixture is certainly
So be cooled to room temperature, most after Jing super micron mill make powder.
The pretreatment of lanonol：0.5 part of Oleum Terebinthinae and 0.2 part of camellia oleosa seed powder are added in 15 parts of lanonols, after being sufficiently mixed
15min is stood, microwave frequency 2450MHz, the microwave treater microwave treater 5min of power 700W is recycled, with 5 DEG C/min
Cooling rate be cooled to 55-60 DEG C, be subsequently adding 0.5 part of polyvinylpolypyrrolidone and 0.5 part of trimethylolpropane tris (+)-2,3-Epoxy-1-propanol
Ether, after mix homogeneously continue microwave treatment 5min, gained mixture add 50 parts of 45-50 DEG C of water in, after being uniformly dispersed with 10 DEG C/
The programming rate of min is warming up to reflux state insulation mixing 10min, finally sends in spray dryer, is dried gained granule and grinds
Clay into power.
Embodiment 3
Performance test is carried out to embodiment 1 and 2 made inner lining plastic bag of embodiment, as a result as shown in table 1.
The made inner lining plastic bag the performance test results of 1 embodiment of table
| Test event | Embodiment 1 | Embodiment 2 |
| Transverse tensile strength (MPa) | 120.8 | 124.6 |
| Transverse breakage percentage elongation (%) | 396.3 | 422.1 |
| Longitudinal tensile strength (MPa) | 131.4 | 133.5 |
| Longitudinal elongation at break rate (%) | 450.6 | 486.2 |
| Heat-stable time (180 DEG C, min) | 52 | 54 |
| Sealing | It is airtight | It is airtight |
The ultimate principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description this
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement is both fallen within scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent thereof.
Claims (6)
1. a kind of p-phenylenediamine packaging inner lining plastic bag, it is characterised in that be made up of the raw material of following parts by weight：
Acrylonitrile-butadiene-styrene copolymer 15-20 parts, linear low density polyethylene 10-15 part, Corvic 5-
10 parts, C5 hydrogenated petroleum resin 5-10 parts, polyethylene glycol oxide 3-6 parts, PNBR 3-6 parts, hydrogenated rosin tetramethylolmethane
Ester 2-3 parts, electrical static eliminator 2-3 parts, petroleum coke micropowder 1-2 parts, hydrogenated palm oil 1-2 part, lanonol 1-2 parts, polydiene third
Base alkyl dimethyl ammonium chloride 0.5-1 parts, nano zine oxide 0.5-1 parts, yittrium oxide 0.05-0.1 parts.
2. p-phenylenediamine packaging inner lining plastic bag according to claim 1, it is characterised in that its preparation method include as
Lower step：
(1) Corvic and PNBR are added in acrylonitrile-butadiene-styrene copolymer, first with 5 DEG C/
The programming rate of min is warming up to 55-60 DEG C of insulation mixing 15min, then is warming up to 120-130 DEG C with the programming rate of 10 DEG C/min
Insulation mixing 25min, is subsequently adding hydrogenated rosin tetramethylolmethane and petroleum coke micropowder, continues the insulation mixing at 120-130 DEG C
15min, and room temperature is naturally cooled to, obtain final product material I；
(2) C5 hydrogenated petroleum resins and polyethylene glycol oxide are added in linear low density polyethylene, with the programming rate of 5 DEG C/min
120-125 DEG C of insulation mixing 30min is warming up to, then adds hydrogenated palm oil and lanonol while hot, be sufficiently mixed, and natural cooling
To room temperature, material II is obtained final product；
(3) electrical static eliminator, diallyl dimethyl ammoniumchloride and nano zine oxide are added in material I, and with 10 DEG C/
The programming rate of min is warming up to 110-120 DEG C of insulation mixing 15min, adds material II and yittrium oxide, is sufficiently mixed, gained
Mixture send into kneading machine in 5min is kneaded at 115-120 DEG C, most after Jing blow moldings be obtained inner lining plastic bag.
3. p-phenylenediamine packaging inner lining plastic bag according to claim 1 and 2, it is characterised in that the eliminostatic
Agent is made up of the raw material of following parts by weight：Dcpd resin 5-10 parts, polyvinyl butyral resin 3-5 parts, microwax 2-3
Part, hydrolytic polymaleic anhydride 2-3 part, ultra-fine polytetrafluorethylepowder powder 1-2 parts, sulfurized lard 1-2 parts, vaseline 0.5-1 parts, receive
Rice titanium dioxide 0.5-1 parts, its preparation method is：It is first that polyvinyl butyral resin and microwax are added in dcpd resin,
120-125 DEG C of insulation mixing 15min is warming up to the programming rate of 5 DEG C/min, ultra-fine polytetrafluorethylepowder powder and sulfur is added
Change Adeps Sus domestica, continue the insulation mixing 10min at 120-125 DEG C, then 65-70 DEG C is cooled to the cooling rate of 5 DEG C/min, and
Hydrolytic polymaleic anhydride, vaseline and nanometer titanium dioxide are added, is being continued with 5 DEG C/min after insulation mixing 10min at 65-70 DEG C
Programming rate be warming up to 115-120 DEG C of insulation mixing 5min, gained mixture naturally cools to room temperature, most after Jing micronizing
Machine makes powder.
4. p-phenylenediamine packaging inner lining plastic bag according to claim 1 and 2, it is characterised in that the lanonol makes
With front through pretreatment, its processing method is：Oleum Terebinthinae and camellia oleosa seed powder are added in lanonol, 15min after being sufficiently mixed, is stood,
Microwave treater microwave treater 5min is recycled, and 55-60 DEG C is cooled to the cooling rate of 5 DEG C/min, is subsequently adding crosslinking
Polyvidone and trihydroxymethylpropanyltri diglycidyl ether, continue microwave treatment 5min after mix homogeneously, gained mixture adds 45-
In 50 DEG C of water, reflux state insulation mixing 10min is warming up to the programming rate of 10 DEG C/min after being uniformly dispersed, spray is finally sent into
In mist drying machine, gained particulate abrasive is dried into powder.
5. p-phenylenediamine packaging inner lining plastic bag according to claim 4, it is characterised in that：The lanonol, Lignum Pini Nodi
The quality amount ratio of oil, camellia oleosa seed powder, polyvinylpolypyrrolidone, trihydroxymethylpropanyltri diglycidyl ether and water is 10-15:0.5-1:
0.1-0.3:0.5-1:0.3-0.5:30-50。
6. p-phenylenediamine packaging inner lining plastic bag according to claim 4, it is characterised in that：The microwave treater
Microwave frequency is 2450MHz, power is 700W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611167246.3A CN106589775A (en) | 2016-12-16 | 2016-12-16 | Lining plastic bag for p-phenylenediamine packaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611167246.3A CN106589775A (en) | 2016-12-16 | 2016-12-16 | Lining plastic bag for p-phenylenediamine packaging |
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| CN106589775A true CN106589775A (en) | 2017-04-26 |
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| CN201611167246.3A Pending CN106589775A (en) | 2016-12-16 | 2016-12-16 | Lining plastic bag for p-phenylenediamine packaging |
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2016
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| CN101016406A (en) * | 2007-02-12 | 2007-08-15 | 东莞市问鼎静电科技有限公司 | Ultra-clean antistatic resin composition, preparing method thereof, product containing the same and application thereof |
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| CN102040771A (en) * | 2009-10-16 | 2011-05-04 | 中国石油化工股份有限公司 | Antibacterial thermoplastic plastic composition and preparation method thereof |
| CN103275423A (en) * | 2013-05-31 | 2013-09-04 | 常熟市弘基无纺制品有限公司 | Preparation method of toughened polyvinyl chloride composite material |
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