CN107177207A - A kind of anti-radon waterproof roll and preparation method thereof - Google Patents
A kind of anti-radon waterproof roll and preparation method thereof Download PDFInfo
- Publication number
- CN107177207A CN107177207A CN201610132261.8A CN201610132261A CN107177207A CN 107177207 A CN107177207 A CN 107177207A CN 201610132261 A CN201610132261 A CN 201610132261A CN 107177207 A CN107177207 A CN 107177207A
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- radon
- waterproof roll
- weight
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Classifications
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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
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
-
- 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
Abstract
The present invention relates to a kind of anti-radon waterproof roll, anti-radon radiation modification Asphalt compositions are subjected to the techniques such as roller coating/blade coating/dip-coating, the thick sizing of control, overlay film, winding on carcass/barrier film and are made.Described anti-radon radiation modification Asphalt compositions radiate elementary material by 20% ~ 90% matrix pitch, 0.1% ~ 30% polymer modifiers, 1% ~ 50% anti-radon and 0.1% ~ 20% additive is constituted.Present invention also offers the preparation method of anti-radon waterproof roll, the anti-radon waterproof roll has excellent water resistance, while having the functions such as anti-radon radiation, purification air.
Description
Technical field
The present invention relates to a kind of construction material, environmental-friendly construction material technical field, more particularly to a kind of anti-radon waterproof roll
And preparation method thereof.
Background technology
Radon is the radioactivity inert gas of colorless and odorless, is the decay constant of the radioactive elements such as uranium, radium, thorium.1988
Radon is classified as human carcinogen, the World Health Organization by international cancer research institution（WHO）It is that 19 kinds of mankind are important carcinogenic to announce radon
One of material, is also to be only second to the second largest arch-criminal that cigarette causes Human Lung Cancer at present.
Radon is dispersed throughout in the earth's crust, in the indoor environment of human work and life, and radon is mainly derived from architecture bottom layer soil
Earth, interior architecture finishing material, outside atmosphere and domestic water and domestic fuel etc..Radon is average dense in house and surrounding soil
Degree is higher than radon consistence in Air Close To The Earth Surface more than 1000 times, is the main source of Indoor Niton.It is dense due to Soil Radon and Indoor Niton
The presence of degree difference and the pressure differential between soil air and room air, Soil Radon is built with spreading with convective transport mode by underground
The gap for building engineering is got in.Wherein, underground and massif are the rocks of dozens of kilometres thickness in the main source of radon, the earth's crust
The radon that stone is discharged the mode such as is sucked and moved from bottom to top, because underground structrue engineering surrounding is close to by diffusion, dialysis
Underground is directly built in massif, is the nearest passage that radon is migrated upwards, poor, the air stream because underground structrue engineering is divulged information
Dynamic few, radon can reach high concentration by space clustering in basement.
Over nearly 30 years, underground space development turns into one of direction of ecumenopolis, but mostly builds down
Build engineering leakage water phenomenon serious, radon concentration is very high.In July, 2014, Chinese architecture waterproof association adjusts with Beijing zero point market
Look into and combine issue with analysis company《National leakage of building status investigation project report in 2013》.This sample investigation is related to the whole nation
28 cities, hypogee percolation ratio reaches 57.51%；Construction roof leakage rate reaches 95.33%.As population increases, society
Expanding economy, the underground structure utilization rate more and more higher that the past leaves unused, newly-built underground structure also can be more and more.With
The underground space is more widely developed, and the crowd's quantity for working and living in underground structrue engineering can be more and more huger,
Radon pollution preventing and treating problems demand in underground structrue engineering is solved.
In recent years, it is mainly simple function coating for anti-radon waterproof material, for example, the disclosure of Chinese patent 02114279.3
A kind of radon preventing paint, Chinese patent 200310122206.3 discloses a kind of radon preventing paint, and Chinese patent 02134863.4 is public
A kind of water radon-screening emulsion paint is opened, Chinese patent 02134996.7 discloses a kind of radon-preventing environment-protecting latex paint.Current existing skill
The radon preventing paint that art is related to exist poor anti-radon effect, poor mechanical property, with basal plane adhesion strength is low, easy to crack, price is high and difficulty
The problems such as thick workability of control is poor.
The content of the invention
There is provided a kind of anti-radon waterproof roll and its preparation side to solve the weak point in above-mentioned background technology by the present invention
Method, it can be sealing adhesive with concrete surface formation, and realization reaches hermetically sealed waterproof effect, and be also equipped with anti-Radon pollution,
Shielding absorbs the function of radiation and purification air, so as to effectively solve Radon pollution of the underground structrue engineering caused by seepage
The health for the crowd for working and living in problem, protection underground structrue engineering.
Described radon waterproof roll, is in carcass by anti-radon radiation modification Asphalt compositions, and/roller coating is carried out on barrier film/scrapes
What the techniques such as painting/dip-coating, the thick sizing of control, overlay film, winding were made, it is characterised in that described anti-radon waterproof roll includes main body
Material layer, anti-radon radiation modification bitumen layer and barrier film.
Described anti-radon radiation modification Asphalt compositions are prepared from by the raw material including following percentage by weight：
Matrix pitch 20%~90%；
Polymer modifiers 0.1%~30%；
Anti- radon radiates elementary material 1%~50%；
Additive 0.1%~20%
Described anti-radon radiation elementary material includes irony primitive material, boron matter primitive material, active mineral primitive material, lithium matter primitive
Material, barium matter primitive material, bismuth oxide, rare earth, dolomite, zinc ore, mica, one kind in titanium dioxide and/or a variety of mixing
Thing.
Described irony primitive material includes one kind and/or many in hematite, magnetic iron ore, limonite ore, ilmenite
The mixture planted.
Described boron matter primitive material includes crude boron stone, borax, boron carbide, boric acid, boron oxide, boron glass powder, boric anhydride, boron magnesium
One kind and/or a variety of mixtures in ore, colemanite, serpentine, quartz sand, boron containing cement.
Described active mineral primitive material includes pelelith, zeolite, float stone, clay, flyash, diatomite, silica flour, gravel
One kind and/or a variety of mixtures in stone, activated carbon powder, graphite.
Described lithium matter primitive material includes one kind and/or a variety of mixtures in lithium fluoride, lithium bromide, lithium hydroxide.
Described barium matter primitive material includes barium monoxide, barium cement, one kind in barite and/or a variety of mixtures.
Described matrix pitch includes one kind and/or a variety of mixtures of bitumen and asphalt.
The needle penetration of the matrix pitch is 70/0.1mm~120/0.1mm.
Described polymer modifiers include SBS thermoplastic elastomers, SBR butadiene-styrene rubber, APP random polypropylenes,
IIR butyl rubbers, CR neoprenes, BR butadiene rubbers, IR isoprene rubbers, SIS styrene-isoprene-phenylethenes block are total to
Polymers, SEBB, SEBS hydrogenated styrene-butadiene block copolymer, NR natural rubbers, SIR silicon rubber, NBR nitrile rubbers, heat
One kind and/or a variety of mixtures in melten gel.
Described additive includes one kind and/or a variety of mixtures in plasticizer, age resister, fire retardant.
Described plasticizer includes one kind and/or a variety of mixing in mineral oil, artificial oil, semi synthetic base oils and vegetable oil
Thing.
Described material of main part is polyethylene film, polypropylene film, polyester film, plastic-metal aluminium laminated film, fluorine
Plastic sheeting, one kind in polyester blank base fabric and/or a variety of composite membranes.
Described barrier film is one in polyethylene kind barrier film, PP type barrier film, polyesters barrier film, barrier paper
Plant and/or two kinds.
The invention provides a kind of anti-radon waterproof roll and preparation method thereof, changed by adding polymer into matrix pitch
Property agent, anti-radon radiation elementary material and additive prepares anti-radon radiation modification Asphalt compositions, the water resistance of raising coiled material makes
It possesses anti-radon radiation, air purification function.
Compared with prior art, the present invention has the advantage that as follows with effect：
The present invention is aqueous, cold except the creep crack resistance with common waterproof roll, self-healing, wet-laid process caking property, anti-channeling
Outside the advantages of convenience of constructing, also with unique anti-radon radiation dominated：
（1）Function with shielding absorption radon gas.Polymer modified asphalt has excellent compactness and air impermeability, adds fire
Mountain stone, zeolite, float stone, clay, flyash, diatomite, silica flour isoreactivity mineral primitive material are natural or artificial porous adsorption materials
Material, using its ion-exchange capacity, selection commutativity and adsorptivity, adsorbs radon gas and fixed absorption radon gas decay constant.
（2）Maskable absorption radon radiation ray.Utilize irony primitive material, boron matter primitive material, lithium matter primitive material, barium matter primitive
The anti-radon radiation primitive material such as material and rare earth, which has, absorbs shielding alpha ray, β rays, X-ray and gamma-ray property, rolls up waterproof
Material has the ability of anti-radon radiation.
（3）Hermetically sealed anti-radon waterproof effect.1. anti-radon performance is good, anti-radon waterproof roll of the invention and concrete surface
Hermetically sealed full viscous effect is formed, is not in leak one and make some alterations a piece of to alter Seepage；2. it is convenient to construct, and anti-radon of the invention is prevented
Water coiled material is the flexible shaping material that thickness is fixed, and the property that fits perfectly is good, using cold construction, without open firing；3. anti-radon radiation energy
Power is strong, and elementary material is radiated by adding anti-radon, and the ability of ray is absorbed with stronger shielding.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, but the invention is not restricted to be embodied
Example（The unit that each raw material is used is weight % or parts by weight）.
Anti- radon radiation modification Asphalt compositions are prepared, the matrix pitch of percentage by weight 20%~90% is placed in retort
It is interior, additive, the polymer modifiers of percentage by weight 0.1%~30% of percentage by weight 0.1%~20% are added, is well mixed
Afterwards, material temperature is risen to 180-230 DEG C, stirs 1.5-2h, material temperature is down to 160 DEG C -190 DEG C, add content for 1%~50% it is anti-
Radon radiates elementary material, is uniformly mixed；
The anti-radon radiation modification Asphalt compositions are carried out with roller coating/blade coating/dip-coating, the thick sizing of control on carcass/barrier film, is covered
Film, winding prepare finished product.
Embodiment 1
40 parts by weight needle penetrations are placed in retort for 120 asphalt, the plasticizer naphthenic oil of 5 parts by weight is added,
Add the polymer modifiers type SBS of 10 parts by weight（Styrene-butadiene-styrene, styrene-butadiene-
Styrene block thermoplastic's property elastomer）With 10 parts by weight SBR butadiene-styrene rubber, after being well mixed, material temperature is risen into 200 DEG C, stirring
Shearing grinding 2h is fully dispersed in pitch to changing polymer dose, and material temperature is down into 185 DEG C, the anti-radon spoke of 10 parts by weight is added
Penetrate elementary material crude boron stone, the anti-radon radiation elementary material barite of 10 parts by weight, the anti-radon radiation elementary material of 10 parts by weight
The rutile titanium dioxide of magnetite powder and 5 parts by weight, 1h is to uniform state for stirring mixing, prepares anti-radon radiation modification drip
Blue or green compound.Modified pitch is carried out to the techniques such as dip-coating, the thick sizing of control, overlay film, winding on polyester carcass again and prepares 3.0mm
Thick modified asphalt waterproof coiled material finished product.The standard that waterproof roll performance meets GB/T 23457-2009 PY class I types 3.0mm will
Ask, its anti-radon gas effect and shielding property are as shown in table 1, table 2：
Embodiment 2
55 parts by weight needle penetrations are placed in retort for 70 asphalt, the plasticizer aromatic hydrocarbons of 15 parts by weight is added
Oil, adds 5 parts of polymer modifiers type SBS（Styrene-butadiene-styrene, styrene-butadiene-benzene
Ethylene block thermoplastic elastomer (TPE)）, after being well mixed, material temperature is risen into 195 DEG C, stirring shearing grinding 1.5h to polymer modification
Agent SBS is fully dispersed in pitch, and material temperature is down into 180 DEG C, and the anti-radon for adding 15 parts by weight radiates elementary material graphite, 5
The anti-radon radiation elementary material clay of parts by weight and the anti-radon radiation elementary material magnetite powder of 5 parts by weight, stirring mixing 1h
To uniform state, anti-radon radiation modification Asphalt compositions are prepared.Modified pitch is scraped on PET macromolecule carcasses again
The techniques such as painting, the thick sizing of control, overlay film, winding prepare finished product.Waterproof roll performance meets GB/T 23457-2009 P class I types
2.0mm standard requirement, its anti-radon gas effect and shielding property are as shown in table 3, table 4：
Embodiment 3
20 parts by weight needle penetrations are placed in retort for 120 bitumen, the plasticizer naphthenic oil of 20 parts by weight is added,
Add the polymer modifiers SBS of 5 parts by weight（Styrene-butadiene-styrene, s-B-S
Inlay section thermal plastic elastic body）, the IIR butyl rubbers of 5 parts by weight, 5 parts of BR butadiene rubbers and 10 parts of PUR, be well mixed
Afterwards, material temperature is risen to 180 DEG C, stirring shearing grinding 2h is fully dispersed in pitch to changing polymer dose, and material temperature is down into 180
DEG C, anti-radon radiation elementary material diatomite, the anti-radon of 10 parts by weight for adding 5 parts by weight radiate elementary material volcano stone flour, 10
The anti-radon radiation elementary material zinc ore stone flour and 10 parts of anti-radon radiation elementary material mica of parts by weight, 1.5h is to equal for stirring mixing
Even state, prepares anti-radon radiation modification Asphalt compositions.Modified pitch is scratched on PE vinyl polymer films again,
The techniques such as the thick sizing of control, overlay film, winding prepare finished product.Waterproof roll performance meets GB/T 23457-2009 P class I types
1.5mm standard requirement.
Embodiment 4
35 parts by weight needle penetrations are placed in retort for 90 asphalt, furfural described in the plasticizer of 5 parts by weight of addition is taken out
Fuel-displaced and 5 parts by weight reduced pressure distillate third fractional oils, add the polymer modifiers star-shaped sbs of 10 parts by weight（styrene-
Butadiene-styrene, s-B-S inlay section thermal plastic elastic body）With 5 parts of polymer modifiers SBR
Butadiene-styrene rubber, after being well mixed, rises to 190 DEG C, stirring shearing grinding 1.5h to polymer modifiers is fully dispersed in by material temperature
In pitch, material temperature is down to 185 DEG C, anti-radon radiation elementary material bloodstone, 5 parts of the anti-radon radiation primitive of 10 parts by weight is added
The anti-radon radiation elementary material weight of material magnet ore deposit, the anti-radon radiation elementary material crude boron stone of 15 parts by weight and 10 parts by weight is brilliant
Stone, 1h is to uniform state for stirring mixing, prepares anti-radon radiation modification Asphalt compositions.Again by modified pitch on polyester carcass
Carry out the techniques such as dip-coating, the thick sizing of control, overlay film, winding and prepare finished product.Waterproof roll performance meets GB/T 23457-2009
PY class I types 3.0mm standard requirement.
Embodiment 5
60 parts by weight needle penetrations are placed in retort for 120 bitumen, castor oil and 4 described in 1 part of plasticizer is added
The reduced pressure distillate third fractional oil of part, adds polymer modifiers SIS (the styrene-isoprene-phenylethene blocks of 5 parts by weight
Copolymer), the APP random polypropylenes of 2 parts by weight, the NR natural rubbers of 1 parts by weight, the SIR silicon rubber of 3 parts by weight, 4 parts of weight
The NBR nitrile rubbers of part and the polymer modifiers SBR butadiene-styrene rubber of 5 parts by weight, after being well mixed, 200 DEG C are risen to by material temperature,
Stirring shearing grinding 2h is fully dispersed in pitch to polymer modifiers, and material temperature is down into 180 DEG C, adds the anti-of 5 parts by weight
Radon radiation elementary material diatomite, the anti-radon radiation elementary material graphite of 5 parts by weight, the anti-radon radiation elementary material of 3 parts by weight
Rutile titanium dioxide and the anti-radon of 2 parts by weight radiation elementary material barite, 1h is to uniform state for stirring mixing, prepares
Anti- radon radiation modification Asphalt compositions.Modified pitch is carried out to roller coating, the thick sizing of control, overlay film, receipts on PET macromolecule carcasses again
The techniques such as volume prepare finished product.Waterproof roll performance meets GB/T 23457-2009 P class I types 2.0mm standard requirement.
Embodiment 6
90 parts by weight needle penetrations are placed in retort for 70 bitumen, the plasticizer palm oil of 1 parts by weight are added, then add
Enter 4 parts of polymer modifiers star-shaped sbs（Styrene-butadiene-styrene, s-B-S block
Thermoplastic elastomer (TPE)）, after being well mixed, material temperature is risen to 180 DEG C, stirring shearing grinding 1.5h to SBS is fully dispersed in pitch
In, material temperature is down to 165 DEG C, anti-radon radiation elementary material graphite, the anti-radon radiation primitive material of 2 parts by weight of 3 parts by weight is added
Expect diatomite, 1h is to uniform state for stirring mixing, prepares anti-radon radiation modification Asphalt compositions.Again by modified pitch in polyester
The techniques such as dip-coating, the thick sizing of control, overlay film, winding are carried out on carcass and prepare finished product.Waterproof roll performance meets GB/T 23457-
2009 PY class I types 4.0mm standard requirement, its anti-radon gas effect and shielding property are as shown in table 5, table 6：
Embodiment 7
20 parts by weight needle penetrations are placed in retort for 120 bitumen, the plasticizer aromatic naphtha and 5 of 10 parts by weight is added
The reduced pressure distillate third fractional oil of parts by weight, adds the polymer modifiers star-shaped sbs of 8 parts by weight（styrene-butadiene-
Styrene, s-B-S inlay section thermal plastic elastic body）, 7 parts of SBR butadiene-styrene rubber and the IIR of 5 parts by weight
Butyl rubber, after being well mixed, rises to 200 DEG C, stirring shearing grinding 2h to polymer modifiers is fully dispersed in drip by material temperature
In green grass or young crops, material temperature is down to 185 DEG C, anti-radon radiation elementary material clay, the anti-radon radiation base of 10 parts by weight of 10 parts by weight is added
First material diatomite, the anti-radon radiation elementary material graphite of 5 parts by weight, the anti-radon radiation elementary material magnetic iron ore of 5 parts by weight, 10
The anti-radon radiation elementary material pelelith of parts by weight, anti-radon radiation elementary material crude boron stone, the anti-radon of 3 parts by weight of 5 parts by weight
Radiate elementary material mica, the anti-radon radiation elementary material titanium dioxide of 2 parts by weight, stirring mixing 1.5h to uniform state, system
Get anti-radon radiation modification Asphalt compositions ready.Modified pitch is scratched on polyester carcass again, thick sizing, overlay film, receipts are controlled
The techniques such as volume prepare finished product.Waterproof roll performance meets GB 23441-2009 PY class I types 3.0mm standard requirement, and it is prevented
Radon gas effect and shielding property are as shown in table 7, table 8
Claims (10)
1. a kind of anti-radon waterproof roll, is in carcass by anti-radon radiation modification Asphalt compositions ,/roller coating is carried out on barrier film/scrapes
What the techniques such as painting/dip-coating, the thick sizing of control, overlay film, winding were made, it is characterised in that described anti-radon waterproof roll includes main body
Material layer, anti-radon radiation modification bitumen layer and barrier film.
2. anti-radon waterproof roll according to claim 1, it is characterised in that：Described anti-radon radiation modification Asphalt compositions
It is to be prepared from by the raw material including following percentage by weight：
Matrix pitch 20%~90%；
Polymer modifiers 0.1%~30%；
Anti- radon radiates elementary material 1%~50%；
Additive 0.1%~20%.
3. anti-radon waterproof roll according to claim 2, it is characterised in that：Described anti-radon radiation elementary material includes iron
Matter primitive material, boron matter primitive material, active mineral primitive material, lithium matter primitive material, barium matter primitive material, bismuth oxide, rare earth, dolomite,
One kind and/or a variety of mixtures in zinc ore, mica, titanium dioxide.
4. anti-radon waterproof roll according to claim 2, it is characterised in that：Described matrix pitch includes bitumen
With one kind and/or a variety of mixtures of asphalt.
5. anti-radon waterproof roll according to claim 2, it is characterised in that：The needle penetration of the matrix pitch is 70/
0.1mm~120/0.1mm.
6. anti-radon waterproof roll according to claim 2, it is characterised in that：Described polymer modifiers includes SBS heat
Plastic rubber elastomer, SBR butadiene-styrene rubber, APP random polypropylenes, IIR butyl rubbers, CR neoprenes, BR butadiene rubbers, IR
Isoprene rubber, SIS SISs, SEBB, SEBS hydrogenated styrene-butadiene block are total to
Polymers, NR natural rubbers, SIR silicon rubber, NBR nitrile rubbers, one kind in PUR and/or a variety of mixtures.
7. anti-radon waterproof roll according to claim 2, it is characterised in that：Described additive includes plasticizer, anti-ageing
One kind and/or a variety of mixtures in agent, fire retardant.
8. anti-radon waterproof roll according to claim 1, it is characterised in that：Described material of main part be polyethylene film,
It is one or more kinds of in polypropylene film, polyester film, plastic-metal aluminium laminated film, fluorine plastic film, polyester blank base fabric
Composite membrane.
9. anti-radon waterproof roll according to claim 1, it is characterised in that：Described barrier film is polyethylene kind isolation
Film, PP type barrier film, polyesters barrier film, one kind in barrier paper and/or two kinds.
10. a kind of production method of anti-radon waterproof roll, it is characterised in that comprise the following steps：
Anti- radon radiation modification Asphalt compositions are prepared, the matrix pitch of percentage by weight 20%~90% is placed in retort, plus
Enter additive, the polymer modifiers of percentage by weight 0.1%~30% of percentage by weight 0.1%~20%, will after being well mixed
Material temperature rises to 180-230 DEG C, stirs 1.5-2h, and material temperature is down into 160 DEG C -190 DEG C, adds the anti-radon spoke that content is 1%~50%
Elementary material is penetrated, is uniformly mixed；The anti-radon radiation modification Asphalt compositions are carried out on carcass/barrier film roller coating/
Blade coating/dip-coating, the thick sizing of control, overlay film, winding prepare finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610132261.8A CN107177207A (en) | 2016-03-09 | 2016-03-09 | A kind of anti-radon waterproof roll and preparation method thereof |
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| CN201610132261.8A CN107177207A (en) | 2016-03-09 | 2016-03-09 | A kind of anti-radon waterproof roll and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107757008A (en) * | 2017-11-30 | 2018-03-06 | 东台市环球塑料制品有限公司 | A kind of macromolecular compounded waterproof material |
| CN110760262A (en) * | 2018-07-27 | 2020-02-07 | 中国石油化工股份有限公司 | Antibacterial non-cured rubber asphalt waterproof coating and preparation method thereof |
| CN112440528A (en) * | 2020-12-02 | 2021-03-05 | 天津卓宝科技有限公司 | Radon-proof gas coiled material and preparation method and application thereof |
| CN113549403A (en) * | 2021-07-27 | 2021-10-26 | 辽宁大禹防水科技发展有限公司 | Waterproof coiled material for isolating radon gas |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107757008A (en) * | 2017-11-30 | 2018-03-06 | 东台市环球塑料制品有限公司 | A kind of macromolecular compounded waterproof material |
| CN110760262A (en) * | 2018-07-27 | 2020-02-07 | 中国石油化工股份有限公司 | Antibacterial non-cured rubber asphalt waterproof coating and preparation method thereof |
| CN112440528A (en) * | 2020-12-02 | 2021-03-05 | 天津卓宝科技有限公司 | Radon-proof gas coiled material and preparation method and application thereof |
| CN113549403A (en) * | 2021-07-27 | 2021-10-26 | 辽宁大禹防水科技发展有限公司 | Waterproof coiled material for isolating radon gas |
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Application publication date: 20170919 |