CN114193867B - Preparation method of asphalt-based pre-laid waterproof coiled material - Google Patents

Preparation method of asphalt-based pre-laid waterproof coiled material Download PDF

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CN114193867B
CN114193867B CN202111524578.3A CN202111524578A CN114193867B CN 114193867 B CN114193867 B CN 114193867B CN 202111524578 A CN202111524578 A CN 202111524578A CN 114193867 B CN114193867 B CN 114193867B
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asphalt
waterproof layer
based pre
waterproof
modified
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CN114193867A (en
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龚志刚
邓伟
王硕
董慧颖
罗博
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Tangshan Karen New Materials Technology Co ltd
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Tangshan Karen New Materials Technology Co ltd
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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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • 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
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • 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
    • 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
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/164—Drying
    • 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
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243—Coating
    • 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
    • B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
    • 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
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/536—Hardness
    • 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
    • B32B2307/70—Other properties
    • B32B2307/71—Resistive to light or to UV
    • 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
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
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  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Road Paving Structures (AREA)

Abstract

The invention relates to a preparation method of an asphalt-based pre-paved waterproof roll, which comprises the steps of firstly preparing an asphalt-based pre-paved waterproof roll body with a first asphalt waterproof layer, a tire-based reinforcing layer, a second asphalt waterproof layer and a separation film sequentially stacked from top to bottom, solidifying the first asphalt waterproof layer and the second asphalt waterproof layer, then thermally fusing the surface of the first asphalt waterproof layer and covering an anti-sticking material, and finally calendering to obtain the asphalt-based pre-paved waterproof roll, wherein the anti-sticking material comprises one or a mixture of a plurality of Portland cement, mullite sand, rock slices or ceramic beads. The preparation process is simple and easy to operate, the practicability is high, the prepared asphalt waterproof layer of the asphalt-based pre-paved waterproof coiled material has good adhesion to an anti-sticking material, and meanwhile, the problems that the anti-sticking material is difficult to unwind and the performance is reduced due to the fact that the anti-sticking material is embedded into the asphalt layer can be effectively prevented.

Description

Preparation method of asphalt-based pre-laid waterproof coiled material
Technical Field
The invention belongs to the technical field of waterproof building materials, and particularly relates to a preparation method of an asphalt-based pre-laid waterproof coiled material.
Background
The pre-paved waterproof coiled material is self-adhered waterproof coiled material constructed by adopting a pre-paved anti-adhesion method, and the existing asphalt-based pre-paved waterproof coiled material sizing material formula in the market is mainly developed from a common asphalt self-adhered product formula, namely asphalt is modified by rubber such as SBS, SBR and the like, and stone powder containing a certain amount of rubber powder is added for dispersion and stirring. Along with the release of GB/T23457-2017 'pre-paved waterproof roll', the structures of asphalt-based pre-paved waterproof rolls of various manufacturers tend to be the same, and most of asphalt-based pre-paved waterproof rolls are covered with isolation sand on the upper surface, are covered with isolation films on the lower surface, and are coiled materials in the middle. The waterproof coiled material has the advantages of low comprehensive cost, convenient construction, good waterproof effect and the like, and is widely applied.
However, the coiled materials still have certain problems in the use process, and the problems that isolation sand is easy to fall off and the isolation sand is embedded into an asphalt layer due to extrusion in the transportation and construction processes of the asphalt-based pre-paved waterproof coiled materials are mainly represented, the phenomenon can cause the loss of anti-sticking capability on the surface of the coiled materials, and finally the conditions that the coiled materials cannot be uncoiled or the coiled materials are adhered to feet and inconvenient to construct are finally caused.
Disclosure of Invention
The invention aims to provide a preparation method of an asphalt-based pre-laid waterproof coiled material which has good adhesion of an anti-sticking material, no adhesion phenomenon of asphalt rubber materials, easy uncoiling and construction and excellent performance, and the asphalt-based pre-laid waterproof coiled material prepared by the method.
In order to achieve the above purpose, the technical scheme adopted is as follows:
The preparation method of the asphalt-based pre-paved waterproof coiled material comprises the steps of firstly preparing an asphalt-based pre-paved waterproof coiled material body formed by sequentially laminating a first asphalt waterproof layer, a tire-based reinforcing layer, a second asphalt waterproof layer and a separation membrane from top to bottom, solidifying the first asphalt waterproof layer and the second asphalt waterproof layer, then carrying out hot melting on the surface of the first asphalt waterproof layer and covering an anti-sticking material, and finally calendering to obtain the asphalt-based pre-paved waterproof coiled material, wherein the anti-sticking material comprises one or a mixture of more of Portland cement, mullite sand, rock slices and ceramic beads.
Preferably, the melting thickness of the surface of the first asphalt waterproof layer is less than or equal to 20% -30% of the total thickness of the first asphalt waterproof layer.
Further preferably, the melting thickness of the surface of the first asphalt waterproof layer is less than or equal to 20% -27% of the total thickness of the first asphalt waterproof layer.
Preferably, the modified asphalt mixtures forming the first asphalt waterproof layer and the second asphalt waterproof layer are the same, the modified asphalt mixtures comprise 5% -25% of the modifier by weight of the total modified asphalt mixtures, and the modifier comprises SBS modifier, SIS modifier and maleic anhydride grafted polypropylene.
Further preferably, the modifier comprises 5% -20% of the total mass of the modified asphalt compound.
In the present invention, SBS stands for styrene-butadiene-styrene block copolymer, SIS stands for styrene-isoprene-styrene.
Further preferably, the mass ratio of the SBS modifier to the SIS modifier to the maleic anhydride grafted polypropylene is (1.5-4.5): (1-3):1.
Still further preferably, the SBS modifier, the SIS modifier and the maleic anhydride grafted polypropylene are added in a mass ratio of (1.5-4): (1-2.5):1.
Still more preferably, the SBS modifier, the SIS modifier and the maleic anhydride grafted polypropylene are added in a mass ratio of (2-4): (1.5-2.5):1.
Still more preferably, the SBS modifier, the SIS modifier and the maleic anhydride grafted polypropylene are added in a mass ratio of (3-4): (2-2.5):1.
Further preferably, the SBS modifier is star-shaped SBS oil gel with the oil filling rate of 25% -35%.
Further preferably, the styrene content in the SIS modifier is less than or equal to 20 percent.
Further preferably, the melting point of the maleic anhydride grafted polypropylene is more than or equal to 130 ℃.
Further preferably, the raw material of the modified asphalt mixture further comprises asphalt accounting for 50-70% of the total mass of the modified asphalt mixture.
Further preferably, the raw material of the modified asphalt mixture further comprises a filler accounting for 15-35% of the total mass of the modified asphalt mixture.
Further preferably, the raw materials of the modified asphalt mixture further comprise an ultraviolet resistant agent accounting for 0.1% -2% of the total mass of the modified asphalt mixture.
Further preferably, the raw material of the modified asphalt mixture further comprises a preservative accounting for 0.01% -1% of the total mass of the modified asphalt mixture.
Still further preferably, the asphalt is 90# asphalt.
Still more preferably, the filler is one or more of quartz powder, heavy calcium and talcum powder with oil absorption value less than or equal to 30g/100 g.
Still further preferably, the ultraviolet resistance agent is one or more of aluminum silicate powder, carbon black and zinc oxide.
More preferably, the particle size of the anti-ultraviolet agent is 800-1250.
More preferably, the preservative is one or more of m-chloropropiophenone, 3' -chloropropiophenone, p-chlorom-dimethylphenol and o-phenylphenol sodium.
Preferably, the preparation method of the modified asphalt rubber material comprises the following steps:
(1) Heating asphalt to 140-160 ℃;
(2) Mixing the preheated asphalt obtained in the step (1) with SBS modifier, SIS modifier and maleic anhydride grafted polypropylene at 180-190 ℃ and grinding by using a colloid mill, wherein the gap of the colloid mill is controlled to be 0.2-0.35 mm;
(3) And (3) mixing the mixture obtained in the step (2) with a mildew inhibitor, an ultraviolet resistance agent and a filler at the temperature of 170-190 ℃ to obtain the modified asphalt sizing material.
Further preferably, the heating temperature in the step (1) is 150-160 ℃.
Further preferably, the grinding temperature in the step (2) is 180-190 ℃.
Further preferably, the mixing temperature in the step (3) is 170-185 ℃.
Preferably, the solidification adopts a mode of cooling by a water bed and then air-drying.
Specifically, the modified asphalt rubber material is uniformly coated on the upper surface and the lower surface of the tire base cloth, a PE film is coated on one side of the modified asphalt rubber material layer, and then the modified asphalt rubber material layer is cooled by entering a water bed to solidify.
Preferably, the surface of the first asphalt waterproof layer is hot melted by adopting a flame spray gun, and the melting thickness of the surface of the first asphalt waterproof layer is controlled to be 20% -30% of the total thickness of the first asphalt waterproof layer.
The invention also provides an asphalt-based pre-laid waterproof coiled material prepared by the preparation method.
Preferably, the thickness of the first asphalt waterproof layer is 0.8-1.2mm.
Preferably, the tyre base reinforcing layer is tyre base cloth with the thickness of 1.2-1.5 mm.
Preferably, the thickness of the first asphalt waterproof layer is 1.2-2mm.
Preferably, the isolating film is made of polyethylene.
Preferably, the base fabric is a long fiber polyester tire with puncture resistance strength of more than or equal to 550N.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
According to the invention, through a process of firstly completely coating sand and then hot-melting the sand in shaping, the phenomena that part of isolation sand is not firmly adhered and part of isolation sand is excessively embedded into an asphalt layer due to inconsistent cooling rate when an asphalt cement layer is solidified are effectively prevented, and further, the situations that the isolation sand falls off and coiled materials are adhered and cannot be uncoiled are avoided; the invention uses the maleic anhydride grafted polypropylene modifier to combine with the SBS modifier and the SIS modifier, and is matched with other components for optimization, thereby obviously improving the high-temperature performance of the waterproof coiled material, reducing the penetration of the coiled material, improving the surface hardness of the coiled material, further preventing the isolation sand from being embedded into the asphalt coiled material and ensuring the anti-sticking effect of the waterproof coiled material. Furthermore, aluminum silicate powder is added into the modified asphalt sizing material, so that the ultraviolet aging resistance and heat resistance of the coiled material are improved. The preparation method disclosed by the invention is simple and convenient in process, easy to operate and high in practicability, and the prepared asphalt-based pre-paved waterproof coiled material has the advantages of low penetration, high surface hardness, good construction application performance and the like.
Drawings
Fig. 1 is a schematic structural view of an asphalt-based pre-laid waterproof roll in an embodiment;
1-a layer of release material; 2-a first asphalt waterproof layer; 3-a base reinforcement layer; 4-a second asphalt waterproof layer; 5-isolating film.
Detailed Description
The invention is further described below with reference to examples. The present invention is not limited to the following examples. The implementation conditions adopted in the embodiments can be further adjusted according to different requirements of specific use, and the implementation conditions which are not noted are conventional conditions in the industry. The technical features of the various embodiments of the present invention may be combined with each other as long as they do not collide with each other.
The existing asphalt-based pre-paved waterproof coiled material is usually easy to fall off isolation sand and the isolation sand is embedded into an asphalt layer due to extrusion in the transportation and construction processes, so that the existing asphalt-based pre-paved waterproof coiled material is difficult to unwind before construction, an asphalt waterproof layer is damaged, and the existing asphalt-based pre-paved waterproof coiled material cannot be used when serious. The long-term and large-scale researches of the invention find that the reasons for the occurrence of the conditions mainly include two aspects, namely that the first aspect is that the coiled material is coated with sand before being coated in the production process, namely that the asphalt sizing material is directly coated with sand after being scraped onto a tire base cloth or coated with the sand after being cooled to a certain temperature, and then the cooling and shaping are continuously carried out, and the disadvantage of the process is that the temperature of a cooling water bed cannot be controlled stably, so that the reduction rate is inconsistent when the asphalt sizing material is cooled, the bonding effect of the isolation sand and the asphalt sizing material is different, and the sand falling phenomenon occurs. Meanwhile, the asphalt rubber is not compact in a complete hot melting state, and partial isolation sand is embedded into the asphalt rubber. The second aspect is that the asphalt sizing material formula has low heat resistance, larger penetration and softer coiled material, and the isolation sand on the surface of the coiled material is easy to be embedded into the coiled material in the transportation or construction process.
Therefore, the inventor carries out a great deal of improvement and optimization on the preparation process and the formula of the asphalt rubber material, and effectively solves the problems.
According to the embodiment, the invention provides a preparation method of an asphalt-based pre-paved waterproof roll, which comprises the steps of firstly preparing an asphalt-based pre-paved waterproof roll body with a first asphalt waterproof layer, a tire-based reinforcing layer, a second asphalt waterproof layer and a separation membrane sequentially stacked from top to bottom, solidifying the first asphalt waterproof layer and the second asphalt waterproof layer, then thermally fusing the surface of the first asphalt waterproof layer and covering an anti-sticking material, and finally calendering to obtain the asphalt-based pre-paved waterproof roll, wherein the anti-sticking material comprises one or a mixture of a plurality of Portland cement, mullite sand, rock slices or ceramic beads.
Firstly, solidifying an asphalt waterproof layer to obtain a stable asphalt-based pre-paved waterproof roll body structure, and then only thermally fusing the surface of a first asphalt waterproof layer and covering an anti-sticking material, so that the problem that the anti-sticking material (isolation sand and the like) is excessively embedded into the asphalt waterproof layer to cause the performance reduction of the asphalt waterproof layer can be effectively prevented, and meanwhile, the bonding effect of the anti-sticking material and an asphalt sizing material can be ensured.
In the present invention, it is preferable to control the melting thickness of the surface of the first asphalt waterproof layer to 20% to 30% or less of the total thickness of the first asphalt waterproof layer, for example, to control the melting thickness of the surface of the first asphalt waterproof layer to 20%, 23%, 25%, 27% or 30% of the total thickness of the first asphalt waterproof layer. If the hot melt thickness is thicker, the anti-sticking material is easy to be embedded into the asphalt waterproof layer to cause the performance of the coiled material to be reduced, if the hot melt thickness is too small, the bonding effect of the anti-sticking material and the asphalt sizing material can not be ensured, and the phenomenon that the anti-sticking material falls off to cause the increase of uncoiling difficulty occurs.
In the invention, the modified asphalt mixtures forming the first asphalt waterproof layer and the second asphalt waterproof layer are the same, the modified asphalt mixtures comprise a modifier, and the modifier comprises an SBS modifier, an SIS modifier and maleic anhydride grafted polypropylene.
In the present invention, the modifier comprises 5% -25% of the modifier, such as 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25% of the total mass of the modified asphalt compound. The proper amount of modifier can obviously improve the high-temperature performance of the waterproof coiled material, reduce the penetration of the coiled material, improve the surface hardness of the coiled material and prevent the situation that the release sand is embedded into the asphalt coiled material to cause losing the anti-sticking effect.
In the invention, the feeding mass ratio of the SBS modifier to the SIS modifier to the maleic anhydride grafted polypropylene is (1.5-4.5): (1-3):1. If the compounding ratio of the SBS modifier, the SIS modifier and the maleic anhydride grafted polypropylene is improper, the performances of low penetration, proper hardness, high temperature performance and the like cannot be simultaneously considered.
In the present invention, the raw materials of the modified asphalt mixture further include asphalt accounting for 50% -70% of the total mass of the modified asphalt mixture, such as 55%, 57%, 59%, 60%, 62%, 65%. The asphalt is preferably 90# asphalt, and the asphalt with proper proportion can be matched with other components to obtain excellent comprehensive performance.
In the present invention, the raw materials of the modified asphalt mixture further include a filler, for example, 18%, 20%, 22%, 24%, 26%, 28%, 30% of the total mass of the modified asphalt mixture. The filler is one or more of quartz powder, heavy calcium and talcum powder with oil absorption value less than or equal to 30g/100 g. Also, a filler in a proper proportion can be compounded with other components to obtain excellent comprehensive properties.
Further preferably, the raw materials of the modified asphalt mixture further comprise an ultraviolet inhibitor accounting for 0.1% -2% of the total mass of the modified asphalt mixture, such as 0.2%, 0.3%, 0.5%, 0.7%, 0.9%, 1%, 1.2%, 1.3%, 1.5%, 1.7%, 1.8%. The ultraviolet resistant agent is one or more of aluminum silicate powder, carbon black and zinc oxide with the particle size of 800-1250 meshes.
Further preferably, the raw materials of the modified asphalt compound further comprise a preservative, for example, 0.05%, 0.1%, 0.3%, 0.5%, 0.7%, 0.9%, 0.95%, 1% by weight of the total mass of the modified asphalt compound. The preservative is one or more of m-chloropropiophenone, 3' -chloropropiophenone, p-chlorom-dimethylphenol and o-phenylphenol sodium.
In the invention, the preparation method of the modified asphalt rubber material comprises the following steps:
(1) Heating asphalt to 140-160 ℃;
(2) Mixing the preheated asphalt obtained in the step (1) with SBS modifier, SIS modifier and maleic anhydride grafted polypropylene at 180-190 ℃ and grinding by using a colloid mill, wherein the gap of the colloid mill is controlled to be 0.2-0.35 mm;
(3) And (3) mixing the mixture obtained in the step (2) with a mildew inhibitor, an ultraviolet resistance agent and a filler at the temperature of 170-190 ℃ to obtain the modified asphalt sizing material.
In the invention, the preparation method of the asphalt-based pre-paved waterproof roll comprises the following steps:
(1) Heating 90# asphalt to 150-160 ℃ to obtain preheated asphalt;
(2) Adding a maleic anhydride grafted polypropylene modifier, an SBS modifier and an SIS modifier into the preheated asphalt, and stirring at 180-190 ℃ until the mixture is uniform;
(3) Grinding the mixture by a colloid mill for three times at 180-190 ℃ after the mixture is uniformly mixed;
(4) Adding a mildew inhibitor, an ultraviolet resistance agent and a filler, and stirring and mixing at 170-185 ℃ to obtain a modified asphalt mixed sizing material;
(5) Uniformly coating the modified asphalt rubber material on the tire base cloth, coating a PE film on the surface of the modified asphalt rubber material layer on one side, and then cooling in a water bed;
(6) Air-drying the cooled modified asphalt coiled material body, and hot-melting the surface of the modified asphalt adhesive layer on the other side by using a flame spray gun;
(7) The upper surface after hot melting is coated with anti-sticking material and then rolled to obtain the asphalt-based pre-laid waterproof coiled material.
The preparation process of the asphalt-based pre-laid waterproof coiled material is simple, convenient and easy to operate, and has high practicability.
The asphalt waterproof layer of the asphalt-based pre-laid waterproof coiled material prepared by the invention has good adhesion to an anti-sticking material and no adhesion phenomenon of asphalt sizing materials; the penetration of the asphalt sizing material is small, and meanwhile, the heat resistance of the coiled material can reach 100 ℃, so that the problems of difficult uncoiling and performance reduction caused by embedding of an anti-sticking material into an asphalt layer can be effectively prevented; the asphalt-based pre-paved waterproof coiled material has the advantages of higher peeling strength with post-cast concrete after ultraviolet treatment compared with the prior art, and also has stronger ultraviolet aging resistance.
The technical scheme and technical effects of the present invention are further described below in conjunction with specific embodiments.
In the following examples and comparative examples, all materials and the like are commercially available unless otherwise specified.
In the following examples and comparative examples, the maleic anhydride grafted polypropylene modifier was 50E803 from DuPont, U.S.A.; the SBS modifier is star-shaped SBS oil gel with the oil filling rate of 33%; the SIS modifier is SIS1105; the mildew preventive is German Langsheng B2; the ultraviolet resistance agent is aluminum silicate powder with the particle size of 800 meshes; the oil absorption value of the quartz powder is about 28g/100g; the tire base reinforcing layer is a long fiber polyester tire with puncture resistance strength of 700N; the SBR modifier is SBR-50 of Shandong Gao Korea Co., ltd; the rubber powder is 60 mesh tire rubber powder.
Example 1
The embodiment provides an asphalt-based pre-paved waterproof roll and a preparation method thereof. The structure of the asphalt-based pre-paved waterproof coiled material can be divided into 1-anti-sticking material layers from top to bottom; 2-a first asphalt waterproof layer (thickness about 1 mm); 3-carcass reinforcement (long-fiber polyester carcass base cloth with a thickness of about 1.4 mm); 4-a second asphalt waterproof layer (thickness about 1.6 mm); 5-release film (PE film with a thickness of about 0.012 mm).
The preparation method comprises the following steps:
(1) Heating 6500kg 90# asphalt to about 150 ℃ to obtain preheated asphalt;
(2) Adding 200kg of maleic anhydride grafted polypropylene, 750kgSBS kg of modifier and 500kg of SIS1105 into the preheated asphalt, stirring at 180 ℃ for 30 minutes, and uniformly mixing;
(3) After being evenly mixed, the mixture is ground for three times by a colloid mill at 180 ℃ and the gap of the colloid mill is controlled to be 0.2mm.
(4) Adding 10kg of mildew inhibitor, 100kg of aluminum silicate powder and 2440kg of quartz powder, and stirring at 170 ℃ for 90 minutes to obtain modified asphalt mixed sizing material;
(5) Uniformly coating the modified asphalt rubber on the tire base cloth, covering PE (polyethylene) films on the lower surface of the tire base cloth, cooling the tire base cloth in a water bed to solidify the modified asphalt rubber, and arranging a second asphalt waterproof layer 4 between the PE films and the tire base cloth;
(6) And after the cooled coiled material is absorbed with water and air-dried, uniformly hot-melting the surface of the first asphalt waterproof layer 2 by using a flame spray gun, and controlling the dissolution thickness of the surface to be about 0.25mm.
(7) And (3) coating the surface with the Mullsand after hot melting, and calendering the coated coiled material to obtain the asphalt-based pre-paved waterproof coiled material.
Example 2
The structure of the asphalt-based pre-laid waterproof roll of this example is the same as that of example 1.
The preparation method comprises the following steps:
(1) 6500kg90# asphalt is heated to about 160 ℃ to obtain preheated asphalt;
(2) Adding 300kg of maleic anhydride grafted polypropylene, 750kgSBS rubber and 500kgSIS1105 into the preheated asphalt, keeping the temperature at 190 ℃ and stirring for 30 minutes, and uniformly mixing;
(3) After being uniformly mixed, the mixture is ground for three times by a colloid mill at 190 ℃, and the gap of the colloid mill is controlled to be 0.35mm.
(4) Adding 10kg of mildew inhibitor, 100kg of aluminum silicate powder and 2540kg of quartz powder, and stirring at 185 ℃ for 90 minutes to obtain modified asphalt mixed sizing material;
(5) Uniformly coating the modified asphalt rubber on the tire base cloth, covering PE (polyethylene) films on the lower surface of the tire base cloth, cooling the tire base cloth in a water bed to solidify the modified asphalt rubber, and arranging a second asphalt waterproof layer 4 between the PE films and the tire base cloth;
(6) And after the cooled coiled material is absorbed with water and air-dried, uniformly hot-melting the surface of the first asphalt waterproof layer 2 by using a flame spray gun, and controlling the dissolution thickness of the surface to be about 0.25mm.
(7) And (3) coating the surface with the Mullsand after hot melting, and calendering the coated coiled material to obtain the asphalt-based pre-paved waterproof coiled material.
Example 3
The structure of the asphalt-based pre-laid waterproof roll of this example is the same as that of example 1.
The preparation method comprises the following steps:
(1) Heating 6500kg 90# asphalt to about 140 ℃ to obtain preheated asphalt;
(2) 400kg of maleic anhydride grafted polypropylene, 750kgSBS rubber and 500kgSIS1105 are added into the preheated asphalt, the temperature is kept at 170 ℃ and stirred for 30 minutes, and the mixture is uniformly mixed;
(3) After being evenly mixed, the mixture is ground for three times by a colloid mill at 180 ℃ and the gap of the colloid mill is controlled to be 0.3mm.
(4) Adding 10kg of mildew inhibitor, 100kg of aluminum silicate powder and 2640kg of quartz powder, and stirring at 170-185 ℃ for 90 minutes to obtain modified asphalt mixed sizing material;
(5) Uniformly coating the modified asphalt rubber on the tire base cloth, covering PE (polyethylene) films on the lower surface of the tire base cloth, cooling the tire base cloth in a water bed to solidify the modified asphalt rubber, and arranging a second asphalt waterproof layer 4 between the PE films and the tire base cloth;
(6) And after the cooled coiled material is absorbed with water and air-dried, uniformly hot-melting the surface of the first asphalt waterproof layer 2 by using a flame spray gun, and controlling the dissolution thickness of the surface to be about 0.25mm.
(7) And (3) coating the surface with the Mullsand after hot melting, and calendering the coated coiled material to obtain the asphalt-based pre-paved waterproof coiled material.
Comparative example 1
The structure of the asphalt-based pre-laid waterproof roll of this example is basically the same as that of example 1.
The preparation method comprises the following steps:
(1) 4500kg of 90# asphalt and 1000kg of naphthenic oil are heated to about 150 ℃ to obtain preheated asphalt;
(2) Adding 500kg of SBS modifier and 500kg of SBR modifier into the preheated asphalt, keeping the temperature at 180 ℃ and stirring for 60 minutes, and uniformly mixing;
(3) 1000kg of rubber powder was added, and the mixture was stirred for 120 minutes after heating to 195 ℃.
(4) 2500Kg of heavy calcium carbonate is added, and the temperature is kept at about 185 ℃ and stirred for 90 minutes to obtain modified asphalt mixed sizing material;
(5) Uniformly coating the modified asphalt rubber material on the base cloth, coating a PE film on the surface of the modified asphalt rubber material on one side, coating the Murill sand on the surface of the modified asphalt rubber material on the other side, and rolling and cooling the coated coiled material to obtain the asphalt-based pre-paved waterproof coiled material.
Comparative example 2
The structure of the asphalt-based pre-laid waterproof roll of this example is the same as that of example 1.
The preparation method comprises the following steps:
(1) 4500kg of 90# asphalt and 1000kg of naphthenic oil are heated to about 160 ℃ to obtain preheated asphalt;
(2) Adding 500kg of SBS modifier and 500kg of SBR modifier into the preheated asphalt, keeping the temperature at 180 ℃ and stirring for 60 minutes, and uniformly mixing;
(3) 1000kg of rubber powder was added, and the mixture was stirred for 120 minutes after heating to 195 ℃.
(4) 2500Kg of heavy calcium carbonate is added, and the temperature is kept at about 185 ℃ and stirred for 90 minutes to obtain modified asphalt mixed sizing material;
(5) Uniformly coating the modified asphalt rubber on the tire base cloth, covering PE (polyethylene) films on the lower surface of the tire base cloth, cooling the tire base cloth in a water bed to solidify the modified asphalt rubber, and arranging a second asphalt waterproof layer 4 between the PE films and the tire base cloth;
(6) And after the cooled coiled material is absorbed with water and air-dried, uniformly hot-melting the surface of the first asphalt waterproof layer 2 by using a flame spray gun, and controlling the dissolution thickness of the surface to be about 0.25mm.
(7) And (3) coating the surface with the Mullsand after hot melting, and calendering the coated coiled material to obtain the asphalt-based pre-paved waterproof coiled material.
Comparative example 3
The structure of the asphalt-based pre-laid waterproof roll of this example is the same as that of example 1.
The preparation method comprises the following steps:
(1) Heating 6500kg 90# asphalt to about 150 ℃ to obtain preheated asphalt;
(2) Adding 200kg of maleic anhydride grafted polypropylene, 750kgSBS kg of modifier and 500kg of SIS1105 into the preheated asphalt, stirring at 180 ℃ for 30 minutes, and uniformly mixing;
(3) After being evenly mixed, the mixture is ground for three times by a colloid mill at 180 ℃ and the gap of the colloid mill is controlled to be 0.2mm.
(4) Adding 10kg of mildew inhibitor, 100kg of aluminum silicate powder and 2440kg of quartz powder, and stirring at 170 ℃ for 90 minutes to obtain modified asphalt mixed sizing material;
(5) Uniformly coating the modified asphalt rubber material on the base cloth, coating a PE film on the surface of the modified asphalt rubber material on one side, coating the Murill sand on the surface of the modified asphalt rubber material on the other side, and rolling and cooling the coated coiled material to obtain the asphalt-based pre-paved waterproof coiled material.
The asphalt-based pre-laid waterproofing rolls of each of the examples and comparative examples were subjected to performance tests including items such as water roll holding property, anti-sticking property, penetration, heat resistance, and peel strength with post-cast concrete (uv treatment), and the test results are shown in table 1.
TABLE 1
The test method is as follows:
1. Peel strength of the web release treated portion: according to the test method specified in 6.23 of GB/T23457-2017 pre-paved waterproof coiled materials, the peel strength of the anti-sticking treatment part of the sample coiled materials is tested;
2. Penetration degree: testing the penetration of the sample asphalt sizing material according to the test method specified in GB/T4509-2010 asphalt penetration determination method;
3. heat resistance: according to GB/T328.11-2007, section 11 of the building waterproof roll test method: the heat resistance of the sample is tested by the test method specified in the asphalt waterproof coiled material heat resistance;
4. peel strength with post-cast concrete: the peel strength of the sample and the post-cast concrete was tested according to the test method specified in GB/T23457-2017, pre-laid waterproof roll 6.20.
Analysis of results:
As can be seen from the data of the present examples 1-3, compared with the comparative example 1 (prior formulation technique), the waterproof coiled material prepared by the present invention has good adhesion of isolation sand at the anti-sticking position, and no adhesion phenomenon of asphalt rubber; along with the adjustment of the modifier, the penetration and heat resistance of the coiled material asphalt sizing material are changed, which indicates that the modifier plays a great role in the formula. Meanwhile, the heat resistance of the coiled material reaches more than 90 ℃, the temperature is obviously increased compared with the temperature of 70 ℃ in comparative example 1, the adaptability of the coiled material to the ambient temperature can be effectively improved, the coiled material is prevented from being limp and soft due to the overhigh air temperature, and isolation sand is embedded into asphalt, so that the coiled material is difficult to unwind; the peel strength of the coiled material after ultraviolet treatment and post-cast concrete has a larger advantage than the prior art, which shows that the pre-paved waterproof coiled material has a stronger ultraviolet aging resistance, so the invention has a larger performance improvement than the prior art.
Comparative example 2 is a coil manufactured by the prior formulation technology and the molding process of the invention, and from the detection value, although part of the properties are improved, lower penetration and peeling properties cannot be achieved,
Comparative example 3 is a coil manufactured by the formulation of the example 1 and the molding process under the prior art, and the detection result shows that the penetration and heat-resistant stripping performance of the coil are good, but the anti-sticking effect is poor, and the stripping value of the anti-sticking part is larger.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
The endpoints and any values of the ranges disclosed herein are not limited to the precise range or value, and are understood to encompass values approaching those ranges or values. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein.

Claims (7)

1. The preparation method of the asphalt-based pre-paved waterproof coiled material is characterized by firstly preparing an asphalt-based pre-paved waterproof coiled material body with a first asphalt waterproof layer, a tire-based reinforcing layer, a second asphalt waterproof layer and a separation membrane from top to bottom, solidifying the first asphalt waterproof layer and the second asphalt waterproof layer, then adopting a flame spray gun to thermally melt the surface of the first asphalt waterproof layer and cover an anti-sticking material, controlling the melting thickness of the surface of the first asphalt waterproof layer to be 20% -30% of the total thickness of the first asphalt waterproof layer, finally calendering to obtain the asphalt-based pre-paved waterproof coiled material, wherein the anti-sticking material comprises one or more of Portland cement, mullite sand, rock sheets or ceramic beads, the modified asphalt sizing material forming the first asphalt waterproof layer and the second asphalt waterproof layer is the same, the raw materials of the modified asphalt sizing material comprise asphalt accounting for 50% -70% of the total mass of the modified asphalt sizing material, the sizing material accounting for 15% -35% of the total mass of the modified asphalt sizing material, and the grafting agent of the modified asphalt sizing material comprises the grafting agent accounting for 0.1% -5% of the total mass of the modified asphalt sizing material, and the grafting agent of the modified asphalt sizing material comprises the grafting agent of the styrene-acrylic anhydride and the acrylic anhydride of the styrene-acrylic acid (SBS) and the acrylic acid) of the modified agent is 1% -5% of the total mass of the modified asphalt is the modified asphalt (1% -5% of the modified asphalt). (1-3):1.
2. The method for preparing asphalt-based pre-laid waterproof coiled materials according to claim 1, wherein the SBS modifier is star-shaped SBS oil gel with the oil filling rate of 25% -35%.
3. The method for preparing an asphalt-based pre-laid waterproof coiled material according to claim 1, wherein the asphalt is 90# asphalt; and/or the filler is one or more of quartz powder, heavy calcium and talcum powder with oil absorption value less than or equal to 30g/100 g; and/or the ultraviolet resistant agent is one or more of aluminum silicate powder, carbon black and zinc oxide, and/or the preservative is one or more of m-chloropropiophenone, 3' -chloropropiophenone, p-chloro-m-dimethylphenol and o-phenylphenol sodium.
4. The method for preparing the asphalt-based pre-paved waterproof roll according to claim 1, wherein the preparation method of the modified asphalt rubber material is as follows:
(1) Heating asphalt to 140-160 ℃;
(2) Mixing the preheated asphalt obtained in the step (1) with SBS modifier, SIS modifier and maleic anhydride grafted polypropylene at 180-190 ℃ and grinding by using a colloid mill, wherein the gap of the colloid mill is controlled to be 0.2-0.35 mm;
(3) And (3) mixing the mixture obtained in the step (2) with a mildew inhibitor, an ultraviolet resistance agent and a filler at the temperature of 170-190 ℃ to obtain the modified asphalt sizing material.
5. The method for preparing the asphalt-based pre-laid waterproof coiled material according to claim 1, wherein the solidification adopts a mode of cooling by a water bed and then air-drying.
6. An asphalt-based pre-laid waterproof roll manufactured by the manufacturing method according to any one of claims 1 to 5.
7. The asphalt-based pre-laid waterproof roll according to claim 6, wherein the thickness of the first asphalt waterproof layer is 0.8-1.2mm; and/or the tyre base reinforcing layer is tyre base cloth with the thickness of 1.2-1.5 mm; and/or the thickness of the first asphalt waterproof layer is 1.2-2mm; and/or the isolating film is made of polyethylene; and/or the base fabric is a long fiber polyester tire with puncture resistance strength more than or equal to 550N.
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