CN105328958B - Diaphragm High-transparent polyethylene film - Google Patents

Diaphragm High-transparent polyethylene film Download PDF

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CN105328958B
CN105328958B CN201410402272.4A CN201410402272A CN105328958B CN 105328958 B CN105328958 B CN 105328958B CN 201410402272 A CN201410402272 A CN 201410402272A CN 105328958 B CN105328958 B CN 105328958B
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masterbatch
low density
density polyethylene
ldpe
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CN105328958A (en
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张宏元
邓康清
杨柱
张志勇
丁温娜
王度
夏萍
常征
刘振宇
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Hubei Institute of Aerospace Chemical Technology
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Hubei Institute of Aerospace Chemical Technology
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Abstract

A kind of diaphragm High-transparent polyethylene film, the composite membrane made of internal layer, middle level, outer layer are by melting coextrusion film blowing, wherein：Internal layer accounts for composite film thickness 10 ~ 35%, is composed of the following raw materials by weight：40 ~ 60 parts of low density polyethylene (LDPE), 40 ~ 60 parts of metallocene linear-low density polyethylene, 1 ~ 8 part of PPA masterbatch, 1 ~ 8 part of transparent nucleater masterbatch, smooth 0.1 ~ 5 part of masterbatch；Middle level accounts for composite film thickness 35 ~ 55%, is composed of the following raw materials by weight：30 ~ 50 parts of low density polyethylene (LDPE), 50 ~ 70 parts of metallocene linear-low density polyethylene, 1 ~ 8 part of PPA masterbatch, 1 ~ 8 part of transparent nucleater masterbatch；Outer layer accounts for composite film thickness 10 ~ 30%, is composed of the following raw materials by weight：30 ~ 50 parts of low density polyethylene (LDPE), 50 ~ 70 parts of metallocene linear-low density polyethylene, 1 ~ 8 part of PPA masterbatch, 1 ~ 8 part of transparent nucleater masterbatch, SEBS1 ~ 10 part.Polyethylene film of the present invention is not only transparent but also is easy to unreel stripping, meets performance requirement of the diaphragm to polyethylene film.

Description

Diaphragm High-transparent polyethylene film
Technical field
The present invention relates to a kind of diaphragm High-transparent polyethylene film.
Background technology
Diaphragm is a kind of membrane material to other materials surface with protective effect, and its main function is that protection is protected Material is in manufacture, transport, storage and secondary processing process from mechanical scuffing, dust pollution, pernicious gas erosion and micro- life Thing corrodes.Basement membrane for manufacturing diaphragm mainly has polyethylene film, polypropylene film and polyethylene terephthalate Film etc., wherein polyethylene film have the characteristics that softness, good toughness, elongation are big, be easy to bending process and adhesion is good, Occupy the larger market share in diaphragm.As diaphragm is extensive in industrial products, ornament materials and people's daily life Using, people to diaphragm performance requirement more and more higher, the diaphragm of household electrical appliance and electronic product is especially applicable to, except will Ask outside the performance with general diaphragm, also require polyethylene protective film high transparency, low haze, lack fisheye, without water ripples, poly- second Alkene diaphragm is easy to unreel stripping in application process is attached, and is not easy stretcher strain, to avoid the alice caused by creep or de- Fall.
For polyethylene because macromolecular structure regularity is good, crystallinity is high, causes using melting coextrusion film blowing technique preparation The polyethylene film transparency is poor.Simultaneously because the selection of plastic additive and dosage be not good enough, manufactured polyethylene film fisheye is more, Water ripple phenomenon is obvious.
In order to meet to industrialize quick production requirement, it is desirable to which polyethylene protective film is easy to unreel stripping in application process is attached From being not easy stretcher strain.It is low using conventionally produced polyethylene protective film tensile strength, easy film breakage, particularly it is coated with Pressure-sensitive adhesive layer is excessive to polyethylene film internal layer bonding force after pressure sensitive adhesive winding, is not easy to unreel stripping, easy stretcher strain, causes Polyethylene protective film attach apply in the alice caused by creep or come off.
The content of the invention
The purpose of the present invention is to overcome the above-mentioned deficiency of prior art and to provide a kind of diaphragm high transparency polyethylene thin Film, there is the characteristics of light transmittance is high, mist degree is low, fisheye is few, without water ripples, is easy to unreel stripping after pressure-sensitive adhesive coating layer, can Meet the performance requirement of household electrical appliance and electronic product to polyethylene protective film, improve production efficiency.
Technical program of the present invention lies in：Film is compound made of internal layer, middle level, outer layer are by melting coextrusion film blowing Film, wherein：
Internal layer accounts for composite film thickness 10 ~ 35%, and it is made up of the raw material of following parts by weight：
40 ~ 60 parts of low density polyethylene (LDPE)
40 ~ 60 parts of metallocene linear-low density polyethylene
1 ~ 8 part of PPA masterbatch
1 ~ 8 part of transparent nucleater masterbatch
Smooth 0.1 ~ 5 part of masterbatch.
Middle level accounts for composite film thickness 35 ~ 55%, and it is made up of the raw material of following parts by weight：
30 ~ 50 parts of low density polyethylene (LDPE)
50 ~ 70 parts of metallocene linear-low density polyethylene
1 ~ 8 part of PPA masterbatch
1 ~ 8 part of transparent nucleater masterbatch.
Outer layer accounts for composite film thickness 10 ~ 30%, and it is made up of the raw material of following parts by weight：
30 ~ 50 parts of low density polyethylene (LDPE)
50 ~ 70 parts of metallocene linear-low density polyethylene
1 ~ 8 part of PPA masterbatch
1 ~ 8 part of transparent nucleater masterbatch
1 ~ 10 part of SEBS.
Low density polyethylene (LDPE) in the present invention（LDPE）And metallocene linear-low density polyethylene（mLLDPE）It is polyolefin Resinoid, PPA masterbatch, transparent nucleater masterbatch, smooth masterbatch, SEBS play a part of processing film auxiliary agent.
The key component of internal layer is low density polyethylene (LDPE) and metallocene linear-low density polyethylene according to 40 ~ 60：40~ 60wt% ratio, 1 ~ 8wt% of additional PPA masterbatch, transparent nucleater masterbatch 1 ~ 8wt%, smooth 0.1 ~ 5wt% of masterbatch are well mixed Form, main function reduces surface tension while being and improve thin-film transparent, so that diaphragm has in application process is attached There is relatively low uncoiling power, be easy to unreel stripping, be not easy stretcher strain.
The key component in middle level is low density polyethylene (LDPE) and metallocene linear-low density polyethylene according to 30 ~ 50：50~ 70wt% ratio, 1 ~ 8wt% of additional PPA masterbatch, 1 ~ 8wt% of transparent nucleater masterbatch are well mixed to be formed, and main function is to improve Fracture tensile strength and elongation at break are improved while thin-film transparent.Low density polyethylene (LDPE) gathers with metallocene linear low density The preferable mixed proportion of ethene is 50：50wt%.
The key component of outer layer is low density polyethylene (LDPE) and metallocene linear-low density polyethylene according to 30 ~ 50：50~ 70wt% ratio, 1 ~ 8wt% of additional PPA masterbatch, transparent nucleater 1 ~ 8wt% of masterbatch, high performance resin SEBS1 ~ 10wt% mixing Uniformly form, main function is the surface tension that film is improved while improving thin-film transparent, so that pressure-sensitive adhesive layer is to polyethylene Film has preferable attachment fastness, prevents glue-line from being shifted in application process.
The polyethylene is commercialized film-grade pellet.Ldpe Melt flow rate used be 1.0 ~ 3.5g/10min, density are 0.915 ~ 0.940g/cm3, low density polyethylene (LDPE) can be from oil of SPC Q281, Bayer Bitterfeld GmbH FB2000, Singapore polyolefins company F210-6, South Korea LG chemistry BF3000 one of which several are used in mixed way.
Metallocene linear-low density polyethylene melt flow rate (MFR) used is 1.0 ~ 3.5g/10min, density is 0.860 ~ 0.920g/cm3.Metallocene linear-low density polyethylene can select american exxon chemistry 350D60, Dow Chemical PF1140, Mitsui chemistry SP2320, Japanese polyolefins company NF744N one of which several are used in mixed way.
The PPA masterbatch is that fluorinated polyolefin forms with low density polyethylene (LDPE) mixing granulation, wherein fluorinated polyolefin：It is low close The quality proportioning for spending polyethylene is 6 ~ 10：90~94wt%.
The preferred Minnesota Mining and Manufacturing Company's polymer processing aidses-Tai Lema PPA of PPA hosts（Fluorinated polyolefin family macromolecule polymerize Thing）.
The transparent nucleater masterbatch is formed by nucleator host and low density polyethylene (LDPE) mixing granulation, wherein nucleator master Agent：The quality proportioning of low density polyethylene (LDPE) is 10 ~ 20：80~90wt%.
Nucleator host is Milliken companies of U.S. polyolefin hyper nucleator（HPN-68L）, polyethylene nucleator （HPN-20E）, Songzi, Hubei Province South Sea Chemical Co., Ltd. 1,3-2,4- dibenzyl sorbitols（DBS）In one or more mix Close and use.
Smooth masterbatch used can select the smooth masterbatch H-PE05 of Shanghai Ju Su Chemical Industry Science Co., Ltd, Shantou City The smooth masterbatch S820PE of bass spy Science and Technology Ltd., the smooth masterbatch JMS201- of Hangzhou Ji Ma plastic materials Co., Ltd One kind in 2PE.
SEBS used is styrene-ethylene/butylene-styrene block copolymer, can select but high property is risen by the section of being not limited to The high performance resin SEBSG1650 of energy Polymer Company.
Light transmittance >=90% of the present invention, mist degree≤9%.
Particle diameter >=0.1mm of the present invention fisheye number≤3/m2。
The present invention is without water ripples.
Internal layer surface tension force≤32mN/m of the present invention, superficies tension force >=40mN/m.
The advantage of the invention is that：Screened by raw material and auxiliary agent, optimization of C/C composites design, blown using three layers of melting co-extrusion Film machine, which is produced not only, to be had the preferably transparency but also is easy to unreel the polyethylene film of stripping, meets household electrical appliance and use for electronic products Performance requirement of the diaphragm to polyethylene film.
Embodiment
The invention will be further described with reference to embodiments.
Embodiment 1
Three layers of internal layer, middle level and outer layer obtain composite membrane by melting coextrusion film blowing, and three layers respectively by following parts by weight Raw material forms：
Internal layer：
LDPE（Q281）50 parts of 3.0 parts of PPA masterbatch
mLLDPE（350D60）50 parts of 2.0 parts of transparent nucleater masterbatch
Smooth 0.5 part of masterbatch
Middle level：
LDPE（Q281）40 parts of 2.0 parts of PPA masterbatch
mLLDPE（350D60）60 parts of 2.0 parts of transparent nucleater masterbatch
Outer layer：
LDPE（Q281）33 parts of 2.0 parts of PPA masterbatch
mLLDPE（350D60）67 parts of 2.0 parts of transparent nucleater masterbatch
3.0 parts of SEBS
The present embodiment product main performance index：
Fracture tensile strength（MPa）：23.1（Longitudinal direction）, 16.8（Laterally）；Elongation at break（%）：325（Longitudinal direction）, 696 （Laterally）；Light transmittance（%）：92.2 mist degree（%）：6.26；Fisheye number：2/m2（Particle diameter >=0.1mm）；Outward appearance：High transparency, it is brilliant Point is few, no water ripples；Internal layer surface tension force：32mN/m, superficies tension force：42mN/m.
Embodiment 2
Three layers of internal layer, middle level and outer layer obtain composite membrane by melting coextrusion film blowing, and three layers respectively by following parts by weight Raw material composition：
Internal layer：
LDPE（FB2000）50 parts of 2.0 parts of PPA masterbatch
mLLDPE（PF1140）50 parts of 2.0 parts of transparent nucleater masterbatch
Smooth 0.4 part of masterbatch
Middle level：
LDPE（FB2000）50 parts of 2.0 parts of PPA masterbatch
mLLDPE（PF1140）50 parts of 2.0 parts of transparent nucleater masterbatch
Outer layer：
LDPE（FB2000）33 parts of 2.0 parts of PPA masterbatch
mLLDPE（PF1140）67 parts of 2.0 parts of transparent nucleater masterbatch
2.0 parts of SEBS
The present embodiment product main performance index：
Fracture tensile strength（MPa）：25.0（Longitudinal direction）, 16.8（Laterally）；Elongation at break（%）：331（Longitudinal direction）, 716 （Laterally）；Light transmittance（%）：92.0 mist degree（%）：6.38；Fisheye number：2/m2（Particle diameter >=0.1mm）；Outward appearance：High transparency, it is brilliant Point is few, no water ripples；Internal layer surface tension force：31mN/m, superficies tension force：40mN/m.
Embodiment 3
Three layers of internal layer, middle level and outer layer obtain composite membrane by melting coextrusion film blowing, and three layers respectively by following parts by weight Raw material composition：
Internal layer：
LDPE（BF3000）50 parts of 2.0 parts of PPA masterbatch
mLLDPE（SP2320）50 parts of 2.0 parts of transparent nucleater masterbatch
Smooth 1.5 parts of masterbatch
Middle level：
LDPE（BF3000）50 parts of 2.0 parts of PPA masterbatch
mLLDPE（SP2320）50 parts of 3.0 parts of transparent nucleater masterbatch
Outer layer：
LDPE（BF3000）40 parts of 2.0 parts of PPA masterbatch
mLLDPE（SP2320）60 parts of 2.0 parts of transparent nucleater masterbatch
3.0 parts of SEBS
The present embodiment product main performance index：
Fracture tensile strength（MPa）：25.8（Longitudinal direction）, 16.5（Laterally）；Elongation at break（%）：351（Longitudinal direction）, 675 （Laterally）；Light transmittance（%）：92.6 mist degree（%）：6.08；Fisheye number：1/m2（Particle diameter >=0.1mm）；Outward appearance：High transparency, it is brilliant Point is few, no water ripples；Internal layer surface tension force：30mN/m, superficies tension force：44mN/m.
Embodiment 4
Three layers of internal layer, middle level and outer layer obtain composite membrane by melting coextrusion film blowing, and three layers respectively by following parts by weight Raw material composition：
Internal layer：
LDPE（F210-6）50 parts of 2.0 parts of PPA masterbatch
mLLDPE（NF744N）50 parts of 2.0 parts of transparent nucleater masterbatch
Smooth 1.0 parts of masterbatch
Middle level：
LDPE（F210-6）50 parts of 2.0 parts of PPA masterbatch
mLLDPE（NF744N）50 parts of 3.0 parts of transparent nucleater masterbatch
Outer layer：
LDPE（F210-6）40 parts of 2.0 parts of PPA masterbatch
mLLDPE（NF744N）60 parts of 2.0 parts of transparent nucleater masterbatch
2.5 parts of SEBS
The present embodiment product main performance index：
Fracture tensile strength（MPa）：23.8（Longitudinal direction）, 17.8（Laterally）；Elongation at break（%）：332（Longitudinal direction）, 655 （Laterally）；Light transmittance（%）：91.4 mist degree（%）：6.58；Fisheye number：1/m2（Particle diameter >=0.1mm）；Outward appearance：High transparency, it is brilliant Point is few, no water ripples；Internal layer surface tension force：30mN/m, superficies tension force：40mN/m.
Embodiment 5
Three layers of internal layer, middle level and outer layer obtain composite membrane by melting coextrusion film blowing, and three layers respectively by following parts by weight Raw material composition：
Internal layer：
LDPE（BF3000）50 parts of 2.0 parts of PPA masterbatch
mLLDPE（350D60）50 parts of 2.0 parts of transparent nucleater masterbatch
Smooth 1.0 parts of masterbatch
Middle level：
LDPE（BF3000）50 parts of 2.0 parts of PPA masterbatch
mLLDPE（350D60）50 parts of 3.0 parts of transparent nucleater masterbatch
Outer layer：
LDPE（BF3000）50 parts of 2.0 parts of PPA masterbatch
mLLDPE（350D60）50 parts of 2.0 parts of transparent nucleater masterbatch
2.5 parts of SEBS
The present embodiment product main performance index：
Fracture tensile strength（MPa）：22.8（Longitudinal direction）, 18.5（Laterally）；Elongation at break（%）：368（Longitudinal direction）, 705 （Laterally）；Light transmittance（%）：93.0 mist degree（%）：6.12；Fisheye number：1/m2（Particle diameter >=0.1mm）；Outward appearance：High transparency, it is brilliant Point is few, no water ripples；Internal layer surface tension force：30mN/m, superficies tension force：41mN/m.
Embodiment 6
Three layers of internal layer, middle level and outer layer obtain composite membrane by melting coextrusion film blowing, and three layers respectively by following parts by weight Raw material composition：
Internal layer：
LDPE（Q281）50 parts of 2.0 parts of PPA masterbatch
mLLDPE（PF1140）50 parts of 2.0 parts of transparent nucleater masterbatch
Smooth 1.0 parts of masterbatch
Middle level：
LDPE（Q281）50 parts of 2.0 parts of PPA masterbatch
mLLDPE（PF1140）50 parts of 3.0 parts of transparent nucleater masterbatch
Outer layer：
LDPE（Q281）40 parts of 2.0 parts of PPA masterbatch
mLLDPE（PF1140）60 parts of 2.0 parts of transparent nucleater masterbatch
1.5 parts of SEBS
The present embodiment product main performance index：
Fracture tensile strength（MPa）：23.5（Longitudinal direction）, 17.5（Laterally）；Elongation at break（%）：289（Longitudinal direction）, 595 （Laterally）；Light transmittance（%）：92.1 mist degree（%）：6.81；Fisheye number：2/m2（Particle diameter >=0.1mm）；Outward appearance：High transparency, it is brilliant Point is few, no water ripples；Internal layer surface tension force：31mN/m, superficies tension force：41mN/m.
Embodiment 7
Three layers of internal layer, middle level and outer layer obtain composite membrane by melting coextrusion film blowing, and three layers respectively by following parts by weight Raw material composition：
Internal layer：
LDPE（FB2000）50 parts of 1.5 parts of PPA masterbatch
mLLDPE（350D60）50 parts of 2.0 parts of transparent nucleater masterbatch
Smooth 1.0 parts of masterbatch
Middle level：
LDPE（FB2000）50 parts of 1.5 parts of PPA masterbatch
mLLDPE（350D60）50 parts of 2.5 parts of transparent nucleater masterbatch
Outer layer：
LDPE（FB2000）40 parts of 1.5 parts of PPA masterbatch
mLLDPE（350D60）60 parts of 2.0 parts of transparent nucleater masterbatch
2.0 parts of SEBS
The present embodiment product main performance index：
Fracture tensile strength（MPa）：26.5（Longitudinal direction）, 18.2（Laterally）；Elongation at break（%）：335（Longitudinal direction）, 703 （Laterally）；Light transmittance（%）：92.0 mist degree（%）：6.00；Fisheye number：1/m2（Particle diameter >=0.1mm）；Outward appearance：High transparency, it is brilliant Point is few, no water ripples；Internal layer surface tension force：32mN/m, superficies tension force：42mN/m.
Embodiment 8
Three layers of internal layer, middle level and outer layer obtain composite membrane by melting coextrusion film blowing, and three layers respectively by following parts by weight Raw material composition：
Internal layer：
LDPE（BF3000）60 parts of 2.0 parts of PPA masterbatch
mLLDPE（350D60）40 parts of 2.0 parts of transparent nucleater masterbatch
Smooth 1.0 parts of masterbatch
Middle level：
LDPE（BF3000）50 parts of 2.0 parts of PPA masterbatch
mLLDPE（350D60）50 parts of 2.0 parts of transparent nucleater masterbatch
Outer layer：
LDPE（BF3000）60 parts of 2.0 parts of PPA masterbatch
mLLDPE（350D60）40 parts of 2.0 parts of transparent nucleater masterbatch
4.0 parts of SEBS
The present embodiment product main performance index：
Fracture tensile strength（MPa）：22.1（Longitudinal direction）, 15.5（Laterally）；Elongation at break（%）：353（Longitudinal direction）, 756 （Laterally）；Light transmittance（%）：92.5 mist degree（%）：5.80；Fisheye number：2/m2（Particle diameter >=0.1mm）；Outward appearance：High transparency, it is brilliant Point is few, no water ripples；Internal layer surface tension force：32mN/m, superficies tension force：42mN/m.

Claims (4)

  1. A kind of 1. diaphragm High-transparent polyethylene film, it is characterised in that：The film is passed through molten by internal layer, middle level, outer layer Melt composite membrane made of coextrusion film blowing, wherein：
    Internal layer accounts for composite film thickness 10 ~ 35%, and it is made up of the raw material of following parts by weight：
    40 ~ 60 parts of low density polyethylene (LDPE)
    40 ~ 60 parts of metallocene linear-low density polyethylene
    1 ~ 8 part of PPA masterbatch
    1 ~ 8 part of transparent nucleater masterbatch
    Smooth 0.1 ~ 5 part of masterbatch
    Middle level accounts for composite film thickness 35 ~ 55%, and it is made up of the raw material of following parts by weight：
    30 ~ 50 parts of low density polyethylene (LDPE)
    50 ~ 70 parts of metallocene linear-low density polyethylene
    1 ~ 8 part of PPA masterbatch
    1 ~ 8 part of transparent nucleater masterbatch
    Outer layer accounts for composite film thickness 10 ~ 30%, and it is made up of the raw material of following parts by weight：
    30 ~ 50 parts of low density polyethylene (LDPE)
    50 ~ 70 parts of metallocene linear-low density polyethylene
    1 ~ 8 part of PPA masterbatch
    1 ~ 8 part of transparent nucleater masterbatch
    1 ~ 10 part of SEBS；
    The transparent nucleater masterbatch is formed by nucleator host and low density polyethylene (LDPE) mixing granulation, wherein nucleator host with The quality proportioning of low density polyethylene (LDPE) is 10 ~ 20：80~90wt%；The nucleator host is polyolefin hyper nucleator HPN- One or more in 68L, polyethylene nucleator HPN-20E, 1,3-2,4- dibenzyl sorbitol DBS；
    The low density polyethylene (LDPE) is the one or more in Q281, FB2000, F210-6, BF3000；
    The metallocene linear-low density polyethylene is the one or more in 350D60, PF1140, SP2320, NF744N；
    The smooth masterbatch is H-PE05, S820PE or JMS201-2PE.
  2. 2. diaphragm High-transparent polyethylene film according to claim 1, it is characterised in that：The low density polyethylene (LDPE) Melt flow rate (MFR) be 1.0 ~ 3.5g/10min, density is 0.915 ~ 0.940g/cm3。
  3. 3. diaphragm High-transparent polyethylene film according to claim 1, it is characterised in that：The metallocene linear is low The melt flow rate (MFR) of density polyethylene is 1.0 ~ 3.5g/10min, and density is 0.860 ~ 0.920g/cm3。
  4. 4. diaphragm High-transparent polyethylene film according to claim 1, it is characterised in that：The PPA masterbatch is fluorine Change polyolefin to form with low density polyethylene (LDPE) mixing granulation, wherein the quality proportioning of fluorinated polyolefin and low density polyethylene (LDPE) for 6 ~ 10：90~94wt%.
CN201410402272.4A 2014-08-15 2014-08-15 Diaphragm High-transparent polyethylene film Active CN105328958B (en)

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CN105835489B (en) * 2016-04-06 2017-02-15 广东东立新材料科技有限公司 Optical grade brightening sheet protection film and making method thereof
CN105860200A (en) * 2016-04-23 2016-08-17 李富贵 High-viscosity self-adhesion protective film and preparation method thereof
CN109747254A (en) * 2017-11-07 2019-05-14 长沙银腾塑印包装有限公司 A kind of blow molding table print PE film
CN109747253A (en) * 2017-11-07 2019-05-14 长沙银腾塑印包装有限公司 A kind of blow molding PE film and its production method
CN108008507A (en) * 2017-11-24 2018-05-08 中广核拓普（四川）新材料有限公司 Optical cable high-foaming gasket for packing and preparation method thereof
CN108707434A (en) * 2018-04-19 2018-10-26 广东东立新材料科技股份有限公司 A kind of stainless steel protection film and preparation method thereof that viscous force growth property is low
CN109385006A (en) * 2018-11-12 2019-02-26 金陵科技学院 A kind of high transparency water-proof sheet material PP Pipe Compound and preparation method thereof

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