CN111634097A - Ultralow-temperature SBS (styrene butadiene styrene) waterproof roll and preparation method thereof - Google Patents

Ultralow-temperature SBS (styrene butadiene styrene) waterproof roll and preparation method thereof Download PDF

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CN111634097A
CN111634097A CN202010548611.5A CN202010548611A CN111634097A CN 111634097 A CN111634097 A CN 111634097A CN 202010548611 A CN202010548611 A CN 202010548611A CN 111634097 A CN111634097 A CN 111634097A
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sbs
negative ion
modified asphalt
asphalt
ion powder
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刘晓强
成永强
张彬
马涛
孙永昌
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Weifang Shihua Chemical Building Materials Co ltd
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Weifang Shihua Chemical Building Materials 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
    • 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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • 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
    • 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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E04B1/665—Sheets or foils impervious to water and water vapor
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • 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
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber 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
    • B32B2255/20—Inorganic 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
    • B32B2255/26—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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/51—Elastic
    • 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
    • B32B2307/552—Fatigue strength
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/38—Boron-containing compounds
    • C08K2003/387—Borates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/005—Additives being defined by their particle size in general
    • 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
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Abstract

The invention provides an ultralow temperature SBS waterproof coiled material and a preparation method thereof, the ultralow temperature SBS waterproof coiled material comprises a base course layer, modified asphalt layers positioned at two sides of the base course layer and an isolation layer positioned at the outer side of the modified asphalt layers, and the ultralow temperature SBS waterproof coiled material is characterized in that: the base layer of the tyre is a long-fiber polyester tyre, the isolation layer is a polyethylene film, and the modified asphalt layer comprises petroleum asphalt and tourmaline negative ion powder. The novel tourmaline negative ion powder/SBS composite modified asphalt and the asphalt waterproof coiled material thereof are successfully prepared by adding the tourmaline negative ion powder with ion release and SBS serving as an asphalt modifier into the waterproof coiled material and carrying out related physical property tests, the tourmaline negative ion powder can obviously improve the high-low temperature performance and the elastic recovery rate of the composite modified asphalt, and the prepared tourmaline negative ion powder/SBS composite modified asphalt waterproof coiled material has excellent tensile property, low-temperature flexibility and ageing resistance.

Description

Ultralow-temperature SBS (styrene butadiene styrene) waterproof roll and preparation method thereof
Technical Field
The invention relates to the technical field of waterproof coiled materials.
In particular to an ultra-low temperature SBS waterproof coiled material and a preparation method thereof.
Background
The SBS waterproof coiled material resists low temperature of-20 ℃ to-25 ℃. The SBS waterproof coiled material is a curled sheet waterproof coiled material which is made of asphalt taking styrene-butadiene-styrene (SBS) thermoplastic elastomer as a modifier and used as a dipping and coating material, and the upper surface of the SBS waterproof coiled material is covered with a polyethylene film, fine sand, a mineral sheet (particle) material or an isolation material such as aluminum foil, copper foil and the like. Waterproofing rolls are most frequently used in waterproofing materials to prevent water leakage, especially SBS waterproofing rolls. The SBS waterproof coiled material has the advantages of good waterproof effect, good ageing resistance and long service life.
In the engineering application of the modified asphalt waterproof coiled material, the overall performance and the application durability of the asphalt waterproof coiled material depend on the used asphalt material to a great extent, the temperature difference between day and night in northwest cold areas of China is large, the environmental temperature is rapidly reduced in winter in severe cold seasons, and great examination is formed on the low-temperature resistance of the asphalt waterproof material. After the asphalt waterproof material is used for a long time, the asphalt waterproof material is inevitably damaged by temperature stress, so that the use effect and the service life of the waterproof material are seriously influenced. Therefore, the traditional polymer asphalt waterproof coiled material (such as SBS) can not meet the waterproof engineering requirement in the northwest cold area well.
Disclosure of Invention
The invention aims to overcome the defects of the traditional technology and provide an ultralow-temperature SBS waterproof coiled material and a preparation method thereof aiming at the defects of the prior art.
The aim of the invention is achieved by the following technical measures: the utility model provides an ultra-low temperature SBS waterproofing membrane, includes child basic unit, is located the modified asphalt layer of child basic unit both sides with be located the isolation layer in the modified asphalt layer outside, its characterized in that: the base layer of the tyre is a long-fiber polyester tyre, the isolation layer is a polyethylene film, and the modified asphalt layer comprises petroleum asphalt and tourmaline negative ion powder.
As an improvement of the technical scheme: the content of the tourmaline negative ion powder is 8 to 15 percent.
As an improvement of the technical scheme: the modified asphalt layer also comprises an SBS elastomer, and the content of the SBS elastomer is 15%.
As an improvement of the technical scheme: the modified asphalt layer also comprises naphthenic oil and talcum powder, and the mass ratio of the sum of the petroleum asphalt and the tourmaline negative ion powder to the naphthenic oil is 8: 2.
As an improvement of the technical scheme: the penetration degree of the petroleum asphalt is 80-100, the softening point is 40-50 ℃, and the ductility at 5 ℃ is 6.5-7.5 cm.
As an improvement of the technical scheme: the electric conductivity of the tourmaline negative ion powder is 4.0-4.8S/m, and the piezoelectric constant d333.5-3.8pC/N, and a dielectric constant of 3.2-3.5 x 10-12F/m。
As an improvement of the technical scheme: the talcum powder is 300 meshes, the naphthenic oil is KN4010, and the unit area mass of the long-fiber polyester tire is 180g/m2。
A preparation method of an ultralow temperature SBS waterproof coiled material is characterized by comprising the following steps: the method comprises the following steps:
preparing a modified asphalt layer: placing tourmaline negative ion powder in a vacuum drying oven at 90 deg.C, and keeping the temperature for 2 h; heating petroleum asphalt to 160 ℃ and continuously stirring, adding the tourmaline negative ion powder weighed in advance into the petroleum asphalt in batches, and continuously shearing for 30min by using a high-speed shearing machine; finally, SBS elastomer is added.
As an improvement of the technical scheme: adding naphthenic oil into the modified asphalt layer, rapidly heating to raise the temperature, continuously stirring for 10min when the temperature reaches 190 ℃, then adding talcum powder, and continuously stirring for 30min at the high temperature of 190 ℃.
As an improvement of the technical scheme: the obtained modified asphalt layer is uniformly coated on the preimpregnated long-fiber polyester base, and the upper surface and the lower surface of the base are coated with PE films.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the advantages that: the invention provides an ultralow temperature SBS waterproof coiled material and a preparation method thereof, wherein ion-releasing tourmaline negative ion powder and SBS are added into a waterproof coiled material to serve as an asphalt modifier, a novel tourmaline negative ion powder/SBS composite modified asphalt and an asphalt waterproof coiled material thereof are successfully prepared by a shear blending method, and relevant physical property tests are carried out.
The invention is further described with reference to the following figures and detailed description.
Drawings
FIG. 1 is a schematic structural diagram of an ultra-low temperature SBS waterproof coiled material.
FIG. 2 is a schematic diagram of the conventional physical property test results of the ultralow temperature SBS waterproof coiled material and the preparation method thereof.
FIG. 3 is a schematic diagram of the increase of the softening point of the ultralow temperature SBS waterproof coiled material after being subjected to ultraviolet aging of different degrees.
FIG. 4 is a schematic diagram of the reduction of low-temperature ductility of the ultra-low temperature SBS waterproof coiled material after being subjected to ultraviolet aging of different degrees.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
As shown in the attached drawing 1, the ultralow temperature SBS waterproof coiled material comprises a base course layer 1, modified asphalt layers 2 positioned on two sides of the base course layer 1 and an isolation layer 3 positioned on the outer side of the modified asphalt layers 2, wherein the base course layer 1 is a long-fiber polyester tire, the isolation layer 3 is a polyethylene film, and the modified asphalt layers 2 comprise petroleum asphalt and tourmaline negative ion powder. In this embodiment, the modified asphalt layer 2 further includes an SBS elastomer, and the content of the SBS elastomer is 15%. The modified asphalt layer 2 also comprises naphthenic oil and talcum powder, and the mass ratio of the sum of the mass of the petroleum asphalt and the tourmaline negative ion powder to the mass of the naphthenic oil is 8: 2.
The penetration degree of the petroleum asphalt is 88.7, the softening point is 44.6 ℃, and the ductility at 5 ℃ is 7.1 cm.
The electric conductivity of the tourmaline negative ion powder is 4.4S/m, and the piezoelectric constant d333.69pC/N, and a dielectric constant of 3.41 x 10-12F/m。
The talcum powder is 300 meshes, the naphthenic oil is KN4010, and the unit area mass of the long-fiber polyester tire is 180g/m2。
The content of the tourmaline negative ion powder is 8 to 15 percent. The tourmaline negative ion powder is a powder rich in Al2O3And CaO, and has excellent piezoelectric properties, infrared radiation properties, pyroelectric properties, and anion release properties. Tourmaline is a boron-containing silicate mineral with a complex structure and components, and belongs to a trigonal system. Because 5 polyhedrons exist in the tourmaline, when the pressure or temperature acting on the crystal surface changes, the inner polyhedrons are about to be distorted, wherein the largest distortion is T-shaped polyhedron, polarization charges appear on two crystal end faces vertical to the c axis, and macroscopically show that a permanent electrostatic field which is not influenced by an external electric field exists around the tourmaline. When the pressure or temperature on the crystal surface changes, the unidirectional polar axis c axis in the tourmaline crystal can be polarized by the external stress action or the thermal expansion of the crystal, the charged particles in the crystal generate relative displacement, and the positive and negative charge center shifts along the c axis direction, so that the total electrode moment of the crystal changes, and the generated polarization charge is far greater than the spontaneous polarization effect, so that the tourmaline has the piezoelectric effect and the pyroelectric effect and has a strong far infrared radiation function. Meanwhile, the change of temperature and pressure can also cause the potential difference of the tourmaline crystal to ionize the surrounding air, and the hit electrons act on the adjacent water and oxygen molecules and convert the water and oxygen molecules into negative ions.
Example 1: an ultra-low temperature SBS waterproof coiled material and a preparation method thereof, comprising the following steps: before preparation, 8 percent of tourmaline negative ion powder is put in a vacuum drying oven with the temperature of 90 ℃ in advance and is kept warm for 2 hours for standby. Heating petroleum asphalt to 160 ℃ and continuously stirring until the matrix asphalt is in a sufficient flowing state, then adding the tourmaline negative ion powder weighed in advance into the matrix asphalt in batches, and immediately and continuously shearing for about 30min by using a high-speed shearing machine to prevent the electric powder from agglomerating; and finally adding 15 percent of SBS elastomer (accounting for the mass of the matrix asphalt) into the asphalt mixture, continuing to shear at high speed, and obtaining the tourmaline negative ion powder/SBS composite modified asphalt after full swelling development.
Fully mixing the prepared tourmaline negative ion powder/SBS composite modified asphalt and naphthenic oil according to the mass ratio of 8:2, rapidly heating to raise the temperature, continuously stirring for about 10min when the temperature reaches 190 ℃, then adding a certain amount of talcum powder, continuously stirring for about 30min at the high temperature of 190 ℃, finally uniformly coating the obtained product on a pre-soaked long-fiber polyester base, and coating PE films on the upper surface and the lower surface to obtain the ultralow-temperature SBS waterproof coiled material shown in figure 1.
Example 2: an ultra-low temperature SBS waterproof coiled material and a preparation method thereof, comprising the following steps: before preparation, 10% tourmaline negative ion powder is placed in a vacuum drying oven at 90 deg.C for 2 h. Heating petroleum asphalt to 160 ℃ and continuously stirring until the matrix asphalt is in a sufficient flowing state, then adding the tourmaline negative ion powder weighed in advance into the matrix asphalt in batches, and immediately and continuously shearing for about 30min by using a high-speed shearing machine to prevent the electric powder from agglomerating; and finally adding 15 percent of SBS elastomer (accounting for the mass of the matrix asphalt) into the asphalt mixture, continuing to shear at high speed, and obtaining the tourmaline negative ion powder/SBS composite modified asphalt after full swelling development.
Fully mixing the prepared tourmaline negative ion powder/SBS composite modified asphalt and naphthenic oil according to the mass ratio of 8:2, rapidly heating to raise the temperature, continuously stirring for about 10min when the temperature reaches 190 ℃, then adding a certain amount of talcum powder, continuously stirring for about 30min at the high temperature of 190 ℃, finally uniformly coating the obtained product on a pre-soaked long-fiber polyester base, and coating PE films on the upper surface and the lower surface to obtain the ultralow-temperature SBS waterproof coiled material shown in figure 1.
Example 3: an ultra-low temperature SBS waterproof coiled material and a preparation method thereof, comprising the following steps: before preparation, 12% tourmaline negative ion powder is placed in a vacuum drying oven at 90 deg.C for 2 h. Heating petroleum asphalt to 160 ℃ and continuously stirring until the matrix asphalt is in a sufficient flowing state, then adding the tourmaline negative ion powder weighed in advance into the matrix asphalt in batches, and immediately and continuously shearing for about 30min by using a high-speed shearing machine to prevent the electric powder from agglomerating; and finally adding 15 percent of SBS elastomer (accounting for the mass of the matrix asphalt) into the asphalt mixture, continuing to shear at high speed, and obtaining the tourmaline negative ion powder/SBS composite modified asphalt after full swelling development.
Fully mixing the prepared tourmaline negative ion powder/SBS composite modified asphalt and naphthenic oil according to the mass ratio of 8:2, rapidly heating to raise the temperature, continuously stirring for about 10min when the temperature reaches 190 ℃, then adding a certain amount of talcum powder, continuously stirring for about 30min at the high temperature of 190 ℃, finally uniformly coating the obtained product on a pre-soaked long-fiber polyester base, and coating PE films on the upper surface and the lower surface to obtain the ultralow-temperature SBS waterproof coiled material shown in figure 1.
Example 4: an ultra-low temperature SBS waterproof coiled material and a preparation method thereof, comprising the following steps: before preparation, 15% tourmaline negative ion powder is placed in a vacuum drying oven at 90 deg.C for 2 h. Heating petroleum asphalt to 160 ℃ and continuously stirring until the matrix asphalt is in a sufficient flowing state, then adding the tourmaline negative ion powder weighed in advance into the matrix asphalt in batches, and immediately and continuously shearing for about 30min by using a high-speed shearing machine to prevent the electric powder from agglomerating; and finally adding 15 percent of SBS elastomer (accounting for the mass of the matrix asphalt) into the asphalt mixture, continuing to shear at high speed, and obtaining the tourmaline negative ion powder/SBS composite modified asphalt after full swelling development.
Fully mixing the prepared tourmaline negative ion powder/SBS composite modified asphalt and naphthenic oil according to the mass ratio of 8:2, rapidly heating to raise the temperature, continuously stirring for about 10min when the temperature reaches 190 ℃, then adding a certain amount of talcum powder, continuously stirring for about 30min at the high temperature of 190 ℃, finally uniformly coating the obtained product on a pre-soaked long-fiber polyester base, and coating PE films on the upper surface and the lower surface to obtain the ultralow-temperature SBS waterproof coiled material shown in figure 1.
Comparative example 1: an ultra-low temperature SBS waterproof coiled material and a preparation method thereof, comprising the following steps: heating the petroleum asphalt to 160 ℃ and continuously stirring until the matrix asphalt is in a sufficient flowing state, then adding 15 percent of SBS elastomer (accounting for the mass of the matrix asphalt) into the petroleum asphalt, carrying out high-speed shearing, and obtaining the SBS composite modified asphalt after sufficient swelling development.
Fully mixing the prepared SBS composite modified asphalt and naphthenic oil according to the mass ratio of 8:2, rapidly heating to raise the temperature, continuously stirring for about 10min when the temperature reaches 190 ℃, then adding a certain amount of talcum powder, continuously stirring for about 30min at the high temperature of 190 ℃, finally uniformly coating the obtained product on a pre-soaked long-fiber polyester base, and coating PE films on the upper surface and the lower surface to obtain the ultra-low temperature SBS waterproof coiled material shown in figure 1.
Performance testing
The conventional physical property test is carried out on the ultra-low temperature SBS waterproof coiled material obtained by the preparation method, the obtained test result is shown in figure 2, the figure 2 shows that the 5 ℃ low temperature ductility of the composite modified asphalt shows a relatively obvious increasing trend along with the increase of the doping amount of the tourmaline negative ion powder, and compared with SBS modified asphalt, the ductility of the composite modified asphalt with the doping amount of 8%, 10%, 12% and 15% respectively increases by 25.8%, 38.7%, 52.4% and 54.8%, which shows that the low temperature ductility of the asphalt can be obviously improved by doping the tourmaline negative ion powder. This is because tourmaline negative ion powder is mainly weakly alkaline and, when it is mixed with asphalt, it is tightly bonded with asphalt molecules with a more stable force, thereby improving the low temperature stability of asphalt. In addition, the piezoelectric property of the tourmaline negative ion powder can form an electrostatic field for releasing charges in the low-temperature ductility tensile test process, which is beneficial to enhancing the thermodynamic stability of the modified asphalt and improving the low-temperature flexibility of the composite modified asphalt. It is worth noting that when the blending amount of the tourmaline negative ion powder exceeds 12%, the ductility of the modified asphalt is gradually increased, because the tourmaline negative ion powder has a large specific surface area, and although the composite modified asphalt is blended and dispersed by a high-speed shearing method, a small amount of agglomerated ion powder still exists in practice, and the modification effect is greatly restricted. Therefore, the mixing amount of the tourmaline negative ion powder is not suitable to be further increased.
After the tourmaline negative ion powder is doped, the softening point of the composite modified asphalt is in an ascending trend, which shows that the doping of the tourmaline negative ion powder can improve the high-temperature performance of the composite asphalt to a certain extent, and compared with SBS modified asphalt, the ductility of the composite modified asphalt with the doping amount of 8%, 10%, 12% and 15% is respectively increased by 3.68%, 5.25%, 7.77% and 8.29%, but in general, the improvement amplitude is less than the low-temperature performance. On one hand, the tourmaline negative ion powder has very large specific surface area, and can adsorb a large amount of light components in an asphalt system after being mixed with a matrix SBS modified asphalt, so that the relative content of the asphaltene is indirectly increased, the hardness and the viscosity of the modified asphalt are obviously increased, and the high-temperature stability of the modified asphalt is better; on the other hand, the tourmaline negative ion powder has excellent pyroelectricity and ion release, and in the softening point heating temperature rise test process, the negative ion powder can release charges to form an electrostatic field, so that atoms in the matrix asphalt can be more tightly combined together, and the thermodynamic state of the modified asphalt is more stable.
The asphalt waterproof coiled material in the cold area not only has waterproof and low-temperature-resistant performances, but also has high elastic recovery rate in the construction process, so that the asphalt waterproof coiled material can quickly recover the original size level after being damaged and deformed by external force, and the high elastic recovery rate is maintained. The elasticity recovery rate of the SBS modified asphalt is basically not affected by the addition of the tourmaline negative ion powder, so that the low-temperature ductility and the high-temperature performance of the composite modified asphalt are improved, and meanwhile, the good elasticity recovery capability is still maintained.
The asphalt waterproof coiled material can be exposed to the natural environment for a long time in the using process, the asphalt waterproof coiled material is inevitably subjected to continuous radiation of ultraviolet rays besides the action of temperature stress, and the variation of asphalt structural components is caused by the photo-oxidative aging reaction of asphalt caused by large temperature difference and strong ultraviolet radiation, most obviously, the asphalt becomes brittle and hard, so that the durability of the asphalt waterproof coiled material is influenced. Based on the above, the invention performs ultraviolet aging simulation test on the prepared composite modified asphalt to explore the influence of tourmaline negative ion powder on the ultraviolet aging resistance of the asphalt. Fig. 3 and 4 respectively show the change trends of the softening point increment and the low-temperature ductility reduction amount of the composite modified asphalt with different tourmaline negative ion powder doping amounts after being subjected to ultraviolet aging at different degrees.
As can be seen from fig. 3: after ultraviolet aging, the softening point increment of SBS modified asphalt and the composite modified asphalt doped with tourmaline negative ion powder is increased, which shows that the asphalt has a certain degree of chemical reaction in the ultraviolet aging process, mainly because the light components in the asphalt generate photolysis reaction and are converted into substances with larger molecular mass, the content of asphaltene is relatively increased, and the softening point of the aged asphalt is increased. After ultraviolet aging, the softening point increment of the composite modified asphalt is gradually reduced along with the increase of the doping amount of the tourmaline negative ion powder, which shows that the doping of the tourmaline negative ion powder can resist or delay the ultraviolet aging process of the asphalt to a certain extent, thereby improving the aging performance of the asphalt. The analysis reason is that in the ultraviolet radiation aging process, the tourmaline negative ion powder in the asphalt can exert piezoelectricity and pyroelectricity to form an electrostatic field capable of enhancing the thermodynamic stability of the asphalt, so that molecular chains of the asphalt are more tightly combined together, and the ultraviolet aging resistance is improved.
As can be seen from fig. 4, similar to the increase of the softening point, the decrease of the low temperature ductility of the asphalt sample after being subjected to ultraviolet aging is increased to different degrees, mainly because the components of the asphalt are subjected to chemical reaction, so that the molecular structure of the asphalt is changed, the asphalt becomes brittle and hard macroscopically, and the low temperature flexibility is obviously reduced, which is not favorable for the long-term application of the asphalt waterproof roll in cold regions. After the tourmaline negative ion powder is doped, the tourmaline negative ion powder can exert piezoelectric property and release negative ions in the low-temperature stretching process of a sample, so that partial deformation of an asphalt sample caused by low-temperature stress can be resisted or delayed to a certain extent, and finally the low-temperature flexibility of the composite modified asphalt is enhanced.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. The utility model provides an ultra-low temperature SBS waterproofing membrane, includes child basic unit, is located the modified asphalt layer of child basic unit both sides with be located the isolation layer in the modified asphalt layer outside, its characterized in that: the base layer of the tyre is a long-fiber polyester tyre, the isolation layer is a polyethylene film, and the modified asphalt layer comprises petroleum asphalt and tourmaline negative ion powder.
2. The ultra-low temperature SBS waterproof roll according to claim 1, wherein: the content of the tourmaline negative ion powder is 8 to 15 percent.
3. The ultra-low temperature SBS waterproof roll according to claim 2, wherein: the modified asphalt layer also comprises an SBS elastomer, and the content of the SBS elastomer is 15%.
4. The ultra-low temperature SBS waterproof roll according to claim 3, wherein: the modified asphalt layer also comprises naphthenic oil and talcum powder, and the mass ratio of the sum of the petroleum asphalt and the tourmaline negative ion powder to the naphthenic oil is 8: 2.
5. The ultra-low temperature SBS waterproof roll according to claim 4, wherein: the penetration degree of the petroleum asphalt is 80-100, the softening point is 40-50 ℃, and the ductility at 5 ℃ is 6.5-7.5 cm.
6. The ultra-low temperature SBS waterproof roll according to claim 5, wherein: the electric conductivity of the tourmaline negative ion powder is 4.0-4.8S/m, and the piezoelectric constant d333.5-3.8pC/N, and a dielectric constant of 3.2-3.5 x 10-12F/m。
7. The ultra-low temperature SBS waterproof roll according to claim 5, wherein: the talcum powder is 300 meshes, the naphthenic oil is KN4010, and the unit area mass of the long-fiber polyester tire is 180g/m2。
8. A preparation method of an ultralow temperature SBS waterproof coiled material is characterized by comprising the following steps: the method comprises the following steps:
preparing a modified asphalt layer: placing tourmaline negative ion powder in a vacuum drying oven at 90 deg.C, and keeping the temperature for 2 h; heating petroleum asphalt to 160 ℃ and continuously stirring, adding the tourmaline negative ion powder weighed in advance into the petroleum asphalt in batches, and continuously shearing for 30min by using a high-speed shearing machine; finally, SBS elastomer is added.
9. The method for preparing an ultra-low temperature SBS waterproof roll according to claim 8, wherein the method comprises the following steps: adding naphthenic oil into the modified asphalt layer, rapidly heating to raise the temperature, continuously stirring for 10min when the temperature reaches 190 ℃, then adding talcum powder, and continuously stirring for 30min at the high temperature of 190 ℃.
10. The method for preparing an ultra-low temperature SBS waterproof roll according to claim 9, wherein the method comprises the following steps: the obtained modified asphalt layer is uniformly coated on the preimpregnated long-fiber polyester base, and the upper surface and the lower surface of the base are coated with PE films.
CN202010548611.5A 2020-06-16 2020-06-16 Ultralow-temperature SBS (styrene butadiene styrene) waterproof roll and preparation method thereof Pending CN111634097A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113861610A (en) * 2021-08-30 2021-12-31 济南大学 Preparation method and application of novel weather-resistant composite waterproof material
CN114574121A (en) * 2022-03-07 2022-06-03 新疆心路科技有限公司 Quick paste for road and preparation method and use method thereof

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Publication number Priority date Publication date Assignee Title
CN102417737A (en) * 2011-11-17 2012-04-18 长安大学 Low-carbon tourmalinite modified asphalt and preparation method thereof
CN107225820A (en) * 2017-06-07 2017-10-03 北京中建友建筑材料有限公司 A kind of meltable type polymer modified bituminous waterproof sheet material and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102417737A (en) * 2011-11-17 2012-04-18 长安大学 Low-carbon tourmalinite modified asphalt and preparation method thereof
CN107225820A (en) * 2017-06-07 2017-10-03 北京中建友建筑材料有限公司 A kind of meltable type polymer modified bituminous waterproof sheet material and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113861610A (en) * 2021-08-30 2021-12-31 济南大学 Preparation method and application of novel weather-resistant composite waterproof material
CN114574121A (en) * 2022-03-07 2022-06-03 新疆心路科技有限公司 Quick paste for road and preparation method and use method thereof

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