CN107501785A - A kind of radiation proof flame retardant type PVC polymer membranes and preparation method thereof - Google Patents
A kind of radiation proof flame retardant type PVC polymer membranes and preparation method thereof Download PDFInfo
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- CN107501785A CN107501785A CN201710700097.0A CN201710700097A CN107501785A CN 107501785 A CN107501785 A CN 107501785A CN 201710700097 A CN201710700097 A CN 201710700097A CN 107501785 A CN107501785 A CN 107501785A
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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
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/015—Additives for heat shrinkable compositions
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
-
- 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)
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- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention provides a kind of radiation proof flame retardant type PVC polymer membranes and preparation method thereof, is related to technical field of polymer materials, is prepared from the following raw materials in parts by weight：30 50 parts of Corvic,5 10 parts of polyethylene,20 30 parts of powdered whiting,20 25 parts of wollastonite,0.5 1.5 parts of polyoxyethylene polyoxypropylene glycerin ether,23 parts of tartaric acid,Melt 5 10 parts of stearic acid,6 ethyoxyls 2,2,4 trimethyls 1,2 0.5 0.8 parts of dihyaroquinolines,37 parts of barium sulfate,15 30 parts of technical white oil,12 parts of nanmeter antimong trioxide,6 12 parts of melamine cyanurate,5 10 parts of castor oil,12 parts of stabilizer,The preparation method of the radiation proof flame retardant type PVC polymer membranes includes three steps,The present invention has ageing-resistant,Low cost,The characteristics of anti-ultraviolet property is good,And there is certain tensile strength and elongation,Shrinkage factor of the present invention is big,Low temperature flexibility is good,It is easy for construction,It can be mechanically fixed,Hot adhesion and cold bonding knot.
Description
Technical field
The present invention relates to technical field of polymer materials, and in particular to a kind of radiation proof flame retardant type PVC macromolecules waterproof volume
Material and preparation method thereof.
Background technology
Polymer membranes is to introduce a kind of new waterproof to grow up the later stage nineties by developed countries to roll up
Material, excellent percolation-proof effect is provided to building trade；After 2009 the domestic exploitation for having started polymer membranes and
Using, and be widely popularized quickly, but be modified pitch used in waterproof roll majority in the market, its low temperature
Shi Yi be hardened embrittlement, high temperature when can trickle, intolerant to sunlight, and volatile quantity is big, not environmentally high carcinogenic.
Polyvinyl chloride is that VCM is pressed certainly in initiators such as peroxide, azo-compounds, or under light, heat effect
The polymer being polymerized by base polymerization reaction mechanism.Polyvinyl chloride is poor to the stability of light and heat, more than 100 DEG C or through length
Time exposure in sunshine, it will decompose and produce hydrogen chloride, and further autocatalysis is decomposed, and causes discoloration, physical and mechanical properties
Also it is rapid to decline, stabilizer is must be added in actual applications to improve the stability to light and heat.
Polyester fiber internal-reinforced PVC waterproof roll material is a kind of thermoplastic PVC roll material, and the coiled material is with polyester
Fabric, by special extrusion coating methods technique, makes the two-sided polyvinyl chloride plastic bed of material gather with middle as reinforcement
The macromolecule coiled material that ester reinforcement is combined into one and formed.It is formulated the poly- of advanced the polyvinyl chloride plastic bed of material and network structure
Ester fiber fabric is combined, and coiled material is possessed splendid dimensional stability and relatively low thermal coefficient of expansion, and lifting coiled material is directly sudden and violent
The long-term behaviour being exposed in natural environment.
The content of the invention
In view of the shortcomings of the prior art, the invention provides a kind of radiation proof flame retardant type PVC polymer membranes and its
Preparation method so that PVC polymer membranes has radiation proof and fire-retardant performance.
To realize object above, the present invention is achieved by the following technical programs：
A kind of radiation proof flame retardant type PVC polymer membranes, is prepared from the following raw materials in parts by weight：
Corvic 30-50 parts, polyethylene 5-10 parts, powdered whiting 20-30 parts, wollastonite 20-25 parts, polyoxy
Propylene polyoxyethylene glycerol ether 0.5-1.5 parts, tartaric acid 2-3 parts, melting stearic acid 5-10 parts, 6- ethyoxyls -2,2,4- front threes
Base -1,2- dihyaroquinoline 0.5-0.8 parts, barium sulfate 3-7 parts, technical white oil 15-30 parts, nanmeter antimong trioxide 1-2 parts, three
Poly cyanamid cyanurate 6-12 parts, castor oil 5-10 parts, stabilizer 1-2 parts.
Preferably, the radiation proof flame retardant type PVC polymer membranes, is prepared from the following raw materials in parts by weight：It is poly-
40 parts of vinyl chloride resin, 8 parts of polyethylene, 25 parts of powdered whiting, 23 parts of wollastonite, 1 part of polyoxyethylene polyoxypropylene glycerin ether,
2.5 parts of tartaric acid, 7 parts of stearic acid of melting, 6- ethyoxyls -2,2,0.6 part of 4- trimethyls -1,2- dihyaroquinoline, barium sulfate 5
Part, 20 parts of technical white oil, 1.5 parts of nanmeter antimong trioxide, 9 parts of melamine cyanurate, 8 parts of castor oil, stabilizer 1.5
Part.
Preferably, the stabilizer is spread out by nano zine oxide, benzophenone, BTA, metal complex, hindered amines
Biology mixes.
Preferably, the metal complex is nickel, cobalt, the organic complex of iron.
Preferably, the mass ratio of the nanmeter antimong trioxide and melamine cyanurate is 1：6.
The preparation method of above-mentioned radiation proof flame retardant type PVC polymer membranes, comprises the following steps：
(1) it is the Corvic of formula ratio, polyethylene, polyoxyethylene polyoxypropylene glycerin ether, tartaric acid, melting is hard
Resin acid, barium sulfate, technical white oil, nanmeter antimong trioxide, melamine cyanurate and castor oil are put into mixer, stirring
After well mixed, by the way that in elevator to micro- material machine, rise temperature heats 20-30min to 100-120 DEG C；
(2) powdered whiting, wollastonite, 6- ethyoxyls -2,2,4- trimethyl -1,2- dihydro quinolines are added into micro- material machine
Quinoline and stabilizer, rise temperature are heated to 120-190 DEG C；
(3) 70-90 DEG C is cooled to after the material in micro- material machine is come out by molding machine, places into screw extruder and squeezes
Go out sheet material, draw to crimping machine into waterproof roll.
Beneficial effect：
1st, the invention provides a kind of radiation proof flame retardant type PVC polymer membranes and preparation method thereof, in the present invention
Proportioning of the nanmeter antimong trioxide with melamine cyanurate by science, there is cooperative flame retardant and improve Mechanical Properties of Products
Effect, and synergistic effect is good so that waterproof roll has the characteristics of fire-retardant and tensile strength is high.
2nd, powdered whiting and wollastonite compounding use in the present invention, its mixture is composite reactive filler, can be notable
Strengthen waterproof roll mechanical property, this composite reactive filler be filled primarily with strengthen principle be multiplicity reactivation enhancing and
Grain granularity and form fit enhancing, i.e. two kinds of different mixed chemical composition and structures of Inorganic nonmetal mineral powder are complicated
Change, modified the taking with the compatibilized of high polymer base-material and into the filler material in the surface activation after Compound Machining, surface
To with the optimization of piling up effect.
3rd, mesotartaric acid of the present invention can reduce melting stearic recovery time and Mooney viscosity so that and processing characteristics is good,
And improve the tensile strength and elongation rate of tensile failure of product.
4th, stabilizer includes photomask agent nano zine oxide, ultra-violet absorber benzophenone and benzo three in the present invention
Azoles, quencher metal complex, radical scavenger hindered amines derivative, photomask agent can reflect or to absorb sunshine ultraviolet
Line, ultraviolet is prevented to go deep into inside coiled material, so as to protect waterproof roll, ultra-violet absorber can absorb strongly to be had to waterproof roll
Harmful solar ultraviolet, quencher can effectively shift in waterproof roll photosensitive chromophore excited energy and by it with harmless
Form dissipates, and waterproof roll is captured and remove free radical from light degradation reaction, radical scavenger occurs to cut off
Autoxidation chain reaction, make waterproof roll that there is radiation proof and absorb the function of ultraviolet.
5th, the present invention has ageing-resistant, low cost, the characteristics of anti-ultraviolet property is good, and with certain tensile strength and
Elongation, shrinkage factor of the present invention is big, and low temperature flexibility is good, easy for construction, can be mechanically fixed, hot adhesion and cold bonding knot.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is the present invention one
Divide embodiment, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, belongs to the scope of protection of the invention.
Embodiment 1：
A kind of radiation proof flame retardant type PVC polymer membranes, is prepared from the following raw materials in parts by weight：
30 parts of Corvic, 10 parts of polyethylene, 20 parts of powdered whiting, 25 parts of wollastonite, polyoxypropylene polyoxy second
0.5 part of alkene glycerin ether, 3 parts of tartaric acid, 5 parts of stearic acid of melting, 6- ethyoxyls -2,2,4- trimethyls -1,2- dihyaroquinoline 0.8
It is part, 3 parts of barium sulfate, 30 parts of technical white oil, 1 part of nanmeter antimong trioxide, 6 parts of melamine cyanurate, 5 parts of castor oil, steady
Determine 2 parts of agent.
Wherein, stabilizer is mixed by nano zine oxide, benzophenone, BTA, metal complex, hindered amines derivative
Conjunction forms；Metal complex is nickel, cobalt, the organic complex of iron.
Embodiment 2：
A kind of radiation proof flame retardant type PVC polymer membranes, is prepared from the following raw materials in parts by weight：
50 parts of Corvic, 5 parts of polyethylene, 30 parts of powdered whiting, 20 parts of wollastonite, polyoxyethylene polyoxypropylene
1.5 parts of glycerin ether, 2 parts of tartaric acid, 10 parts of stearic acid of melting, 6- ethyoxyls -2,2,4- trimethyls -1,2- dihyaroquinoline 0.5
Part, 7 parts of barium sulfate, 15 parts of technical white oil, 2 parts of nanmeter antimong trioxide, 12 parts of melamine cyanurate, 10 parts of castor oil,
1 part of stabilizer.
Wherein, stabilizer is mixed by nano zine oxide, benzophenone, BTA, metal complex, hindered amines derivative
Conjunction forms；Metal complex is nickel, cobalt, the organic complex of iron.
Embodiment 3：
A kind of radiation proof flame retardant type PVC polymer membranes, is prepared from the following raw materials in parts by weight：Polyvinyl chloride tree
40 parts of fat, 8 parts of polyethylene, 25 parts of powdered whiting, 23 parts of wollastonite, 1 part of polyoxyethylene polyoxypropylene glycerin ether, tartaric acid
2.5 parts, melting 7 parts of stearic acid, 6- ethyoxyls -2,2,0.6 part of 4- trimethyls -1,2- dihyaroquinoline, 5 parts of barium sulfate, industry
20 parts of white oil, 1.5 parts of nanmeter antimong trioxide, 9 parts of melamine cyanurate, 8 parts of castor oil, 1.5 parts of stabilizer.
Wherein, stabilizer is mixed by nano zine oxide, benzophenone, BTA, metal complex, hindered amines derivative
Conjunction forms；Metal complex is nickel, cobalt, the organic complex of iron.
Embodiment 4：
A kind of radiation proof flame retardant type PVC polymer membranes, is prepared from the following raw materials in parts by weight：
45 parts of Corvic, 9 parts of polyethylene, 27 parts of powdered whiting, 24 parts of wollastonite, polyoxyethylene polyoxypropylene
1.2 parts of glycerin ether, 2.5 parts of tartaric acid, 8 parts of stearic acid of melting, 6- ethyoxyls -2,2,4- trimethyls -1,2- dihyaroquinoline 0.7
Part, 6 parts of barium sulfate, 25 parts of technical white oil, 1.5 parts of nanmeter antimong trioxide, 9 parts of melamine cyanurate, 8 parts of castor oil,
2 parts of stabilizer.
Wherein, stabilizer is mixed by nano zine oxide, benzophenone, BTA, metal complex, hindered amines derivative
Conjunction forms；Metal complex is nickel, cobalt, the organic complex of iron.
The preparation method of above-described embodiment 1-4 radiation proof flame retardant type PVC polymer membranes, comprises the following steps：
(1) it is the Corvic of formula ratio, polyethylene, polyoxyethylene polyoxypropylene glycerin ether, tartaric acid, melting is hard
Resin acid, barium sulfate, technical white oil, nanmeter antimong trioxide, melamine cyanurate and castor oil are put into mixer, stirring
After well mixed, by the way that in elevator to micro- material machine, rise temperature heats 20-30min to 100-120 DEG C；
(2) powdered whiting, wollastonite, 6- ethyoxyls -2,2,4- trimethyl -1,2- dihydro quinolines are added into micro- material machine
Quinoline and stabilizer, rise temperature are heated to 120-190 DEG C；
(3) 70-90 DEG C is cooled to after the material in micro- material machine is come out by molding machine, places into screw extruder and squeezes
Go out sheet material, draw to crimping machine into waterproof roll.
Performance test：To the radiation proof flame retardant type PVC polymer membranes progressive as made from 1-4 of the embodiment of the present invention
Can test.
Test result is as follows：
To sum up, the embodiment of the present invention has the advantages that：Radiation proof flame retardant type made from 1-4 of the embodiment of the present invention
PVC polymer membranes has the characteristics of ageing-resistant, anti-ultraviolet property is good, and has certain tensile strength and elongation
Rate, shrinkage factor of the present invention is big, and low temperature flexibility is good, easy for construction.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these modification or
Replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (6)
1. a kind of radiation proof flame retardant type PVC polymer membranes, it is characterised in that be prepared from the following raw materials in parts by weight：
Corvic 30-50 parts, polyethylene 5-10 parts, powdered whiting 20-30 parts, wollastonite 20-25 parts, polyoxypropylene polyoxy
Ethylene Glycol ether 0.5-1.5 parts, tartaric acid 2-3 parts, melting stearic acid 5-10 parts, 6- ethyoxyls -2,2,4- trimethyls -1,2- bis-
Hydrogenated quinoline 0.5-0.8 parts, barium sulfate 3-7 parts, technical white oil 15-30 parts, nanmeter antimong trioxide 1-2 parts, melamine cyanogen
Lithate 6-12 parts, castor oil 5-10 parts, stabilizer 1-2 parts.
2. radiation proof flame retardant type PVC polymer membranes as claimed in claim 1, it is characterised in that by following parts by weight
Several raw materials are made：40 parts of Corvic, 8 parts of polyethylene, 25 parts of powdered whiting, 23 parts of wollastonite, polyoxypropylene gather
1 part of oxygen Ethylene Glycol ether, 2.5 parts of tartaric acid, 7 parts of stearic acid of melting, 6- ethyoxyls -2,2,4- trimethyl -1,2- dihydro quinolines
0.6 part of quinoline, 5 parts of barium sulfate, 20 parts of technical white oil, 1.5 parts of nanmeter antimong trioxide, 9 parts of melamine cyanurate, castor oil
8 parts, 1.5 parts of stabilizer.
3. radiation proof flame retardant type PVC polymer membranes as claimed in claim 1, it is characterised in that the stabilizer by
Nano zine oxide, benzophenone, BTA, metal complex, hindered amines derivative mix.
4. radiation proof flame retardant type PVC polymer membranes as claimed in claim 3, it is characterised in that the metal complex
Thing is nickel, cobalt, the organic complex of iron.
5. radiation proof flame retardant type PVC polymer membranes as claimed in claim 1, it is characterised in that the oxygen of nanometer three
The mass ratio for changing two antimony and melamine cyanurate is 1：6.
6. the preparation method of radiation proof flame retardant type PVC polymer membranes as claimed in claim 1, it is characterised in that bag
Include following steps：
(1) it is the Corvic of formula ratio, polyethylene, polyoxyethylene polyoxypropylene glycerin ether, tartaric acid, melting is stearic
Acid, barium sulfate, technical white oil, nanmeter antimong trioxide, melamine cyanurate and castor oil are put into mixer, and stirring is mixed
After closing uniformly, by the way that in elevator to micro- material machine, rise temperature heats 20-30min to 100-120 DEG C；
(2) into micro- material machine add powdered whiting, wollastonite, 6- ethyoxyls -2,2,4- trimethyls -1,2- dihyaroquinoline and
Stabilizer, rise temperature are heated to 120-190 DEG C；
(3) 70-90 DEG C is cooled to after the material in micro- material machine is come out by molding machine, places into extrudate piece in screw extruder
Material, draw to crimping machine into waterproof roll.
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| CN201710700097.0A CN107501785A (en) | 2017-08-16 | 2017-08-16 | A kind of radiation proof flame retardant type PVC polymer membranes and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109111866A (en) * | 2018-06-04 | 2019-01-01 | 湖北维嘉防水科技有限公司 | Modified flexible waterproof sheet of ageing-resistant pvc and preparation method thereof |
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| CN103119726A (en) * | 2010-09-29 | 2013-05-22 | 东丽薄膜先端加工股份有限公司 | Multilayered polyolefin resin film for back protection sheet for solar cell |
| CN105237914A (en) * | 2015-11-04 | 2016-01-13 | 云南远安防水科技有限公司 | PVC waterproof roll |
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| CN103119726A (en) * | 2010-09-29 | 2013-05-22 | 东丽薄膜先端加工股份有限公司 | Multilayered polyolefin resin film for back protection sheet for solar cell |
| CN105331002A (en) * | 2015-10-22 | 2016-02-17 | 厦门力嘉诚防水工程有限公司 | PVC high-molecular waterproof coiled material |
| CN105237914A (en) * | 2015-11-04 | 2016-01-13 | 云南远安防水科技有限公司 | PVC waterproof roll |
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| 高峰等著: "《建筑材料科学基础》", 31 August 2016, 同济大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109111866A (en) * | 2018-06-04 | 2019-01-01 | 湖北维嘉防水科技有限公司 | Modified flexible waterproof sheet of ageing-resistant pvc and preparation method thereof |
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