CN110204914B - Self-adhesive polymer modified asphalt waterproof coiled material and preparation method and application thereof - Google Patents
Self-adhesive polymer modified asphalt waterproof coiled material and preparation method and application thereof Download PDFInfo
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
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- B32—LAYERED PRODUCTS
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
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- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2311/00—Metals, their alloys or their compounds
- B32B2311/24—Aluminium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
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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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Abstract
The invention provides a self-adhesive polymer modified asphalt waterproof coiled material and a preparation method and application thereof, wherein the waterproof coiled material comprises the following raw materials, by weight, 35-40 parts of road petroleum asphalt, 10-15 parts of aromatic oil, 2-5 parts of SBR modifier, 5-8 parts of SBS, 8-10 parts of activated rubber powder, 2-5 parts of anticorrosion tackifier, 10-15 parts of tackifying resin and thermoplastic ethylene propylene diene monomer: 3-5 parts of filler and 15-20 parts of filler. The waterproof coiled material can improve the peel strength of the self-adhesive polymer modified asphalt waterproof coiled material with concrete and metal, has excellent corrosion resistance, greatly improves the performance of the self-adhesive coiled material, is convenient and fast to construct, and can be used in occasions under corrosive environments, such as metal roofs exposed outdoors, anticorrosion pipelines, underground waterproof and other projects.
Description
Technical Field
The invention belongs to the technical field of waterproof coiled materials, and particularly relates to a self-adhesive polymer modified asphalt waterproof coiled material and a preparation method and application thereof.
Background
In the prior art, when the self-adhesive polymer modified asphalt waterproof coiled material is applied to anticorrosion waterproof engineering, asphalt is general in acid and alkali resistance and poor in adhesion property with a metal surface, so that the requirement of anticorrosion engineering is difficult to meet.
How to improve the acid and alkali resistance of the coiled material and provide the peeling strength between the coiled material and the metal surface or the concrete surface becomes a technical problem to be solved urgently, so that a waterproof coiled material needs to be provided to meet the relevant requirements.
Disclosure of Invention
In view of the above, the invention aims to provide a self-adhesive polymer modified asphalt waterproof coiled material, and a preparation method and an application thereof, which improve the corrosion resistance of the self-adhesive polymer modified asphalt waterproof coiled material, improve the peel strength of the coiled material from a metal surface and a concrete surface by 20%, and greatly improve the adhesive property of the self-adhesive polymer modified asphalt waterproof coiled material.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the self-adhesive polymer modified asphalt waterproof coiled material comprises the following raw materials, by weight, 35-40 parts of road petroleum asphalt, 10-15 parts of aromatic oil, 2-5 parts of SBR modifier, 5-8 parts of SBS, 8-10 parts of activated rubber powder, 2-5 parts of anticorrosion tackifier, 10-15 parts of tackifying resin and thermoplastic ethylene propylene diene monomer: 3-5 parts of filler and 15-20 parts of filler.
Preferably, the road petroleum asphalt is No. 70 or No. 90 asphalt; the anticorrosion tackifier is flexible vinyl resin; the tackifying resin is hydrogenated rosin resin.
Preferably, the hydrogenated rosin resin has a viscosity (60% in toluene) of 3.6 mpa.s; the thermoplastic ethylene propylene diene monomer has propylene content of 40-50 Wt%.
Preferably, the mass content of aromatic hydrocarbon in the aromatic oil is more than or equal to 85 percent; the SBR modifier is thermoplastic styrene-butadiene rubber, and the ash content of the SBR modifier is less than or equal to 55 percent; the SBS is a styrene-butadiene-styrene block copolymer, and the melt index of the SBS is 0.03-0.16 g/10 min.
Preferably, the activated rubber powder is prepared by performing surface activation treatment on rubber powder, and the ignition loss of the activated rubber powder is more than or equal to 60 percent; the filler is light calcium powder, and the mesh number of the filler is 800-1200 meshes.
Preferably, the surface of the coiled material adopts aluminum foil, and the thickness of the aluminum foil is 0.04-0.06 mm; the heat resistance of the coiled material is 110-115 ℃.
The invention also provides a method for preparing the self-adhesive polymer modified asphalt waterproof coiled material, which comprises the following steps,
step 1: stirring and heating road petroleum asphalt and aromatic oil with certain mass to 175-185 ℃;
step 2: adding activated rubber powder and thermoplastic ethylene propylene diene monomer into the mixed oil obtained in the step (1), heating to 200 ℃ and 220 ℃, and stirring at constant temperature until the activated rubber powder is completely melted to obtain normal viscous liquid;
and step 3: cooling the mixture obtained in the step 2 to 175-185 ℃, adding SBR and SBS into the mixed oil obtained in the step 2 in proportion, and stirring at constant temperature until SBR and SBS are completely melted;
and 4, step 4: cooling the mixture obtained in the step 3 to 160-170 ℃, adding the anticorrosive tackifier and the tackifying resin into the mixture obtained in the step 3 together according to a proportion, and stirring until the mixture is completely melted;
and 5: grinding the mixture obtained in the step 4 by a colloid mill, wherein the flow rate of the colloid mill is as follows: not less than 23m3The grinding temperature is 175-;
step 6: adding the filler into the mixture prepared in the step 5 according to the proportion, and stirring until the filler is uniformly dispersed in the mixture, wherein the stirring temperature is 200 ℃ and 210 ℃, and the stirring time is 90-120 min;
and 7: keeping the temperature of the mixture prepared in the step 6 at 175-185 ℃ to form a corrosion-resistant high-viscosity self-adhesive polymer modified asphalt waterproof coiled material base material with proper thickness;
and 8: putting the base material into an oiling tank, controlling the oiling temperature at 175-185 ℃, coating the base material on a polyester base, and controlling the thickness of the coiled material by a pair roller; the thickness is 3-4 mm.
And step 9: the coiled material is covered with a silicone oil isolating film and an aluminum foil, and the surface of the coiled material is cooled by cooling water with the temperature of 30-40 ℃ to obtain a finished product.
The invention also provides the application of the self-adhesive polymer modified asphalt waterproof coiled material in anticorrosion pipeline engineering, color steel roof waterproof engineering or underground waterproof engineering.
Compared with the prior art, the self-adhesive polymer modified asphalt waterproof coiled material has the following advantages:
the corrosion-resistant high-viscosity self-adhesive polymer modified asphalt waterproof coiled material can meet the requirements of corrosion-resistant engineering, the bonding strength of the coiled material with a metal surface and a concrete surface can be improved by more than 20%, the acid and alkali resistance of the coiled material is improved, and the coiled material is very suitable for corrosion-resistant engineering.
Detailed Description
Unless defined otherwise, technical terms used in the following examples have the same meanings as commonly understood by one of ordinary skill in the art to which the present invention belongs. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods are conventional methods unless otherwise specified.
All numerical designations such as temperature, time, viscosity, including ranges, are approximations. It is to be understood, although not always explicitly stated that all numerical designations are preceded by the term "about". It is also to be understood that, although not always explicitly recited, the reagents described herein are merely exemplary and equivalents thereof are known in the art.
The road petroleum asphalt, the aromatic oil, the SBS, the activated rubber powder, the anti-corrosion tackifier, the tackifying resin, the thermoplastic ethylene propylene diene monomer rubber and the filler are prepared by the conventional technology known by the technical personnel in the field or are directly purchased.
The present invention will be described in detail with reference to examples.
Example 1
The corrosion-resistant high-viscosity self-adhesive polymer modified asphalt waterproof coiled material comprises the following raw materials in parts by weight: 35 parts of road petroleum No. 70 asphalt, 10 parts of aromatic oil, 2 parts of SBR modifier, 5 parts of SBS, 8 parts of activated rubber powder, 2 parts of anti-corrosion tackifier, 10 parts of tackifying resin, 3 parts of thermoplastic ethylene propylene diene monomer and 15 parts of filler.
The tackifying resin is hydrogenated rosin resin, and the filler is 800-1200 meshes of light calcium powder.
The anticorrosion tackifier is flexible vinyl resin;
the aromatic hydrocarbon oil has aromatic hydrocarbon content not less than 85%. The SBR modifier is thermoplastic styrene butadiene rubber, and the ash content of the SBR modifier is less than or equal to 55 percent. The SBS is a styrene-butadiene-styrene block copolymer with the model of 4402; the melt index is 0.13-0.16g/10 min. The activated rubber powder is prepared by performing surface activation treatment on rubber powder, and the ignition loss of the activated rubber powder is more than or equal to 60 percent; thermoplastic ethylene propylene diene monomer (TPV) with model number 2604 and propylene content of 40-50 Wt%;
the preparation method of the corrosion-resistant high-viscosity self-adhesive polymer modified asphalt waterproof coiled material comprises the following steps:
35 parts of No. 70 asphalt and 10 parts of aromatic oil are added into a stirring tank, and heated to 185 ℃ with stirring.
Adding 8 parts of activated rubber powder and 3 parts of thermoplastic ethylene propylene diene monomer into the mixture, heating to 210 ℃, stirring at constant temperature until the activated rubber powder is completely melted into a thin and thick liquid, and cooling to 185 ℃;
adding 2 parts of SBR modifier and 5 parts of SBS into the mixture stirred at the constant temperature, and keeping the temperature at 185 ℃ to enable the SBR modifier and the SBS to be completely melted;
cooling the mixture to 160 ℃, adding 10 parts of tackifying resin and 2 parts of anticorrosive tackifier, keeping the temperature at 160 ℃, and continuing stirring until the tackifying resin and the anticorrosive tackifier are melted and uniformly dispersed in the mixture;
grinding the obtained mixture by a colloid mill, wherein the colloid mill has the flow: not less than 23m3’Grinding temperature 180 ℃, grinding time: and (5) 60 min.
Adding 15 parts of light calcium powder into the mixture, stirring for about 90min, wherein the stirring temperature is as follows: 200 ℃ and 210 ℃ until the light calcium powder is uniformly dispersed in the mixture;
and (3) keeping the prepared mixture at a constant temperature of 180 ℃ to form the corrosion-resistant high-viscosity self-adhesive polymer modified asphalt waterproof coiled material base material with proper thin consistency.
Putting the base material into an oiling tank, controlling the oiling temperature at 180 ℃, coating the base material on a polyester base, and controlling the thickness of the coiled material by a pair roller, wherein the thickness of the coiled material is 3-4 mm.
And (3) covering a silicone oil isolating film and an aluminum foil (the thickness is 0.04mm) on the coiled material, and cooling the surface of the coiled material by using cooling water at the temperature of 30-40 ℃ to obtain the corrosion-resistant high-viscosity self-adhesive polymer modified asphalt waterproof coiled material.
Example 2
The corrosion-resistant high-viscosity self-adhesive polymer modified asphalt waterproof coiled material comprises the following raw materials in parts by weight: 40 parts of road petroleum No. 70 asphalt, 15 parts of aromatic oil, 5 parts of SBR modifier, 8 parts of SBS, 10 parts of activated rubber powder, 5 parts of anti-corrosion tackifier, 15 parts of tackifying resin, 5 parts of thermoplastic ethylene propylene diene monomer and 20 parts of filler.
The tackifying resin is hydrogenated rosin resin, and the filler is 800-1200 meshes of light calcium powder.
The anticorrosion tackifier is flexible vinyl resin;
the aromatic hydrocarbon oil has aromatic hydrocarbon content not less than 85%. The SBR modifier is thermoplastic styrene butadiene rubber, and the ash content of the SBR modifier is less than or equal to 55 percent. The SBS is a styrene-butadiene-styrene block copolymer with the model number of 4402 and the melt index of 0.13-0.16g/10 min. The activated rubber powder is prepared by performing surface activation treatment on rubber powder, and the ignition loss of the activated rubber powder is more than or equal to 60 percent; thermoplastic ethylene propylene diene monomer (TPV) with model number 2604 and propylene content of 40-50 Wt%;
the preparation method of the corrosion-resistant high-viscosity self-adhesive polymer modified asphalt waterproof coiled material comprises the following steps:
40 parts of No. 70 asphalt and 15 parts of aromatic oil are added into a stirring tank, and the mixture is stirred and heated to 185 ℃.
Adding 10 parts of activated rubber powder and 5 parts of thermoplastic ethylene propylene diene monomer into the mixture, heating to 210 ℃, stirring at constant temperature until the activated rubber powder is completely melted into a thin and thick liquid, and cooling to 185 ℃;
adding 5 parts of SBR modifier and 8 parts of SBS into the mixture stirred at the constant temperature, and keeping the temperature at 185 ℃ to enable the SBR modifier and the SBS to be completely melted;
cooling the mixture to 160 ℃, adding 15 parts of tackifying resin and 5 parts of anticorrosive tackifier, keeping the temperature at 160 ℃, and continuing stirring until the tackifying resin and the anticorrosive tackifier are melted and uniformly dispersed in the mixture;
grinding the obtained mixture by a colloid mill, wherein the colloid mill has the flow: not less than 23m3Polishing temperature 175-: and (5) 90 min.
Adding 20 parts of light calcium powder into the mixture, stirring for about 120min, wherein the stirring temperature is as follows: 200 ℃ and 210 ℃ until the light calcium powder is uniformly dispersed in the mixture;
and (3) keeping the temperature of the prepared mixture at 185 ℃ to form the corrosion-resistant high-viscosity self-adhesive polymer modified asphalt waterproof coiled material base material with proper thin consistency.
Putting the base material into an oiling tank, controlling the oiling temperature at 185 ℃, coating the base material on a polyester base, and controlling the thickness of the coiled material by a pair roller, wherein the thickness of the coiled material is 3-4 mm.
And (3) coating a silicone oil isolating membrane and an aluminum foil on the coiled material, and cooling the surface of the coiled material by using cooling water at the temperature of 30-40 ℃ to obtain the corrosion-resistant high-viscosity self-adhesive polymer modified asphalt waterproof coiled material.
Comparative example 1
Other components are unchanged, and the corrosion-resistant high-viscosity self-adhesive polymer modified asphalt waterproof coiled material is obtained without adopting an anti-corrosion tackifier.
Comparative example 2
The other components are unchanged, the thermoplastic ethylene propylene diene monomer (TPV) is 4770P, the propylene content is 25 Wt%, and the obtained corrosion-resistant high-viscosity self-adhesive polymer modified asphalt waterproof coiled material is obtained.
The performances of the corrosion-resistant high-viscosity self-adhesive polymer modified asphalt waterproof coiled material in the example 1-2 are tested by GB/T23441-2009 and GB/T23457-2017 detection methods, and the test results are shown in Table 1.
TABLE 1
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A self-adhesive polymer modified asphalt waterproof coiled material is characterized in that: the road asphalt comprises, by weight, 35-40 parts of road petroleum asphalt, 10-15 parts of aromatic oil, 2-5 parts of SBR modifier, 5-8 parts of SBS, 8-10 parts of activated rubber powder, 2-5 parts of anticorrosive tackifier, 10-15 parts of tackifying resin and thermoplastic ethylene propylene diene monomer: 3-5 parts of filler and 15-20 parts of filler; thermoplastic ethylene propylene diene monomer, the propylene content of which is 40-50 Wt%; the anticorrosion tackifier is flexible vinyl resin.
2. The self-adhesive polymer modified asphalt waterproofing membrane of claim 1, characterized in that: the road petroleum asphalt is No. 70 or No. 90 asphalt; the tackifying resin is hydrogenated rosin resin.
3. The self-adhesive polymer modified asphalt waterproofing membrane of claim 2, characterized in that: the hydrogenated rosin resin had a viscosity of 3.6mpa.s, measured with a 60% toluene solution.
4. The self-adhesive polymer modified asphalt waterproofing membrane of claim 1, characterized in that: the mass content of aromatic hydrocarbon in the aromatic oil is more than or equal to 85 percent; the SBR modifier is thermoplastic styrene-butadiene rubber, and the ash content of the SBR modifier is less than or equal to 55 percent; the SBS is a styrene-butadiene-styrene block copolymer, and the melt index of the SBS is 0.03-0.16 g/10 min.
5. The self-adhesive polymer modified asphalt waterproofing membrane of claim 1, characterized in that: the activated rubber powder is prepared by performing surface activation treatment on rubber powder, and the ignition loss of the activated rubber powder is more than or equal to 60 percent; the filler is light calcium powder, and the mesh number of the filler is 800-1200 meshes.
6. The self-adhesive polymer modified asphalt waterproofing membrane of claim 1, characterized in that: the surface of the coiled material adopts aluminum foil, and the thickness of the aluminum foil is 0.04-0.06 mm; the heat resistance of the coiled material is 110-115 ℃.
7. A method for preparing the self-adhesive polymer modified asphalt waterproof coiled material as claimed in any one of claims 1 to 6, which is characterized in that: comprises the following steps of (a) carrying out,
step 1: stirring and heating road petroleum asphalt and aromatic oil with certain mass to 175-185 ℃;
step 2: adding activated rubber powder and thermoplastic ethylene propylene diene monomer into the mixed oil obtained in the step (1), heating to 200 ℃ and 220 ℃, and stirring at constant temperature until the activated rubber powder is completely melted to obtain normal viscous liquid;
and step 3: cooling the mixture obtained in the step 2 to 175-185 ℃, adding SBR and SBS into the mixed oil obtained in the step 2 in proportion, and stirring at constant temperature until SBR and SBS are completely melted;
and 4, step 4: cooling the mixture obtained in the step 3 to 160-170 ℃, adding the anticorrosive tackifier and the tackifying resin into the mixture obtained in the step 3 together according to a proportion, and stirring until the mixture is completely melted;
and 5: grinding the mixture obtained in the step 4 by a colloid mill, wherein the flow rate of the colloid mill is as follows: not less than 23m3The grinding temperature is 175-;
step 6: adding the filler into the mixture prepared in the step 5 according to the proportion, and stirring until the filler is uniformly dispersed in the mixture, wherein the stirring temperature is 200 ℃ and 210 ℃, and the stirring time is 90-120 min;
and 7: keeping the temperature of the mixture prepared in the step 6 at 175-185 ℃ to form a corrosion-resistant high-viscosity self-adhesive polymer modified asphalt waterproof coiled material base material with proper thickness;
and 8: putting the base material into an oiling tank, controlling the oiling temperature at 175-185 ℃, coating the base material on a polyester base, and controlling the thickness of the coiled material by a pair roller; the thickness value is 3-4 mm;
and step 9: the coiled material is covered with a silicone oil isolating film and an aluminum foil, and the surface of the coiled material is cooled by cooling water with the temperature of 30-40 ℃ to obtain a finished product.
8. The self-adhesive polymer modified asphalt waterproof coiled material as claimed in any one of claims 1 to 6, which is applied to anticorrosion pipeline engineering, color steel roof waterproof engineering or underground waterproof engineering.
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| CN111119352A (en) * | 2019-12-30 | 2020-05-08 | 北新禹王防水科技(安徽)有限公司 | Activated rubber modified asphalt waterproof coiled material and preparation method thereof |
| CN112300757B (en) * | 2020-10-31 | 2021-07-02 | 河南华瑞兴业防水科技有限公司 | Self-adhesive polymer modified asphalt waterproof coiled material and preparation method and application thereof |
| CN112662374B (en) * | 2020-12-23 | 2021-08-27 | 深圳市卓宝科技股份有限公司 | Sizing material with acid-base regulator for improving stripping performance of S-CLF coiled material |
| CN113278382B (en) * | 2021-05-21 | 2022-10-28 | 湖北九阳防水材料科技有限公司 | Polymer film-based self-adhesive coiled material and preparation method thereof |
| CN113881340B (en) * | 2021-10-19 | 2022-08-26 | 苏州卓宝科技有限公司 | Ultrahigh-temperature-resistant elastomer modified asphalt waterproof coating |
| CN115260779A (en) * | 2022-08-17 | 2022-11-01 | 江西玉龙防水科技有限公司 | High-performance high-yield modified asphalt waterproof coiled material and preparation method thereof |
| CN115960552A (en) * | 2022-12-31 | 2023-04-14 | 天津禹红房屋修缮有限公司 | Special self-adhesive waterproof roll for color steel roof maintenance and preparation method thereof |
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