阅读说明：本技术 一种易熔型改性沥青和易熔型改性沥青防水卷材及制备方法 (Fusible modified asphalt, fusible modified asphalt waterproof coiled material and preparation method thereof ) 是由 张超 贝甲平 张俟 于 2021-07-14 设计创作，主要内容包括：本发明属于防水卷材领域,公开了一种易熔型改性沥青和易熔型改性沥青防水卷材及制备方法。所述易熔型改性沥青包括以重量份计的以下组分：调和沥青50-55份,SBS 10-20份,聚合物助剂2-3份、橡胶类改性剂10-15份,脱硫活化催化剂0.1-0.5份和无机填料15-32份,以及任选地包括石油树脂1-2份；以所述调和沥青的总重量计,所述调和沥青包括：基质沥青89-97.5重量％、芳香烃2-10重量％和聚烯烃树脂0.5-1重量％。本发明的易熔型改性沥青提升了防水卷材产品的施工效率以及施工后的出油性、提高了生产效率、降低了生产成本以及提升了防水卷材产品施工应用效果。(The invention belongs to the field of waterproof coiled materials, and discloses fusible modified asphalt, a fusible modified asphalt waterproof coiled material and a preparation method thereof. The fusible modified asphalt comprises the following components in parts by weight: 50-55 parts of mixed asphalt, 10-20 parts of SBS, 2-3 parts of polymer additive, 10-15 parts of rubber modifier, 0.1-0.5 part of desulfurization activating catalyst and 15-32 parts of inorganic filler, and optionally 1-2 parts of petroleum resin; the blended asphalt comprises, based on the total weight of the blended asphalt: 89-97.5 wt% of base asphalt, 2-10 wt% of aromatic hydrocarbon and 0.5-1 wt% of polyolefin resin. The fusible modified asphalt provided by the invention improves the construction efficiency of the waterproof coiled material product and the oil yield after construction, improves the production efficiency, reduces the production cost and improves the construction application effect of the waterproof coiled material product.)

1. The fusible modified asphalt is characterized by comprising the following components: the asphalt modifier comprises blended asphalt, SBS, polymer auxiliary agent, rubber modifier, desulfurization activation catalyst and inorganic filler, and optionally comprises petroleum resin; the blended asphalt comprises: base asphalt, aromatic hydrocarbons and polyolefin resins.

2. The fusible modified asphalt of claim 1, wherein the fusible modified asphalt comprises the following components in parts by weight: 50-55 parts of mixed asphalt, 10-20 parts of SBS, 2-3 parts of polymer additive, 10-15 parts of rubber modifier, 0.1-0.5 part of desulfurization activating catalyst and 15-32 parts of inorganic filler, and optionally 1-2 parts of petroleum resin;

the blended asphalt comprises, based on the total weight of the blended asphalt: 89-97.5 wt% of base asphalt, 2-10 wt% of aromatic hydrocarbon and 0.5-1 wt% of polyolefin resin.

3. The fusible modified asphalt of claim 1 or 2,

the SBS is star-shaped SBS, wherein the styrene content is 25-35 wt%, the molecular weight is 15-35 ten thousand, and the melt flow rate is 0.05-3g/10 min;

the polymer additive is polyethylene wax;

the mesh number of the rubber modifier is 60-80 meshes;

the desulfurization activating catalyst is at least one of aromatic hydrocarbon disulfides, phenolic resin monomers and disulfide oligomer activators;

the inorganic filler is coarse whiting powder and/or talcum powder, the mesh number of the coarse whiting powder is 400-400 meshes, and the mesh number of the talcum powder is 200-400 meshes;

the petroleum resin is C5 hydrogenated petroleum resin and/or C9 hydrogenated petroleum resin;

the matrix asphalt is 90# asphalt and/or 70# asphalt.

4. The fusible modified asphalt of claim 1 or 2, wherein the blended asphalt is prepared by a process comprising: uniformly mixing and stirring the matrix asphalt, the aromatic hydrocarbon and the polyolefin resin to obtain the blended asphalt; preferably, the temperature of the mixing and stirring is 140-170 ℃ and the time is 30-360 min.

5. The process for preparing a fusible modified asphalt according to any one of claims 1 to 4, which comprises the steps of:

s1: uniformly mixing the SBS and the molten blended asphalt to obtain a first mixture;

s2: uniformly mixing and stirring the desulfurization activation catalyst, the polymer auxiliary agent, the rubber modifier and the first mixture to obtain a second mixture;

s3: and mixing and stirring the inorganic filler and the second mixture uniformly to obtain the fusible modified asphalt.

6. The process for producing a fusible modified asphalt as claimed in claim 5,

in step S1, the temperature of the uniform mixing is 160-180 ℃, and the time is 2.5-3.5 h;

the temperature of the mixing and stirring in the step S2 is 160-170 ℃;

the temperature of the mixing and stirring in step S3 is 160-170 ℃.

7. The fusible modified asphalt waterproof coiled material is characterized by comprising an upper surface isolation layer, an upper surface modified asphalt layer, a reinforcement layer, a lower surface modified asphalt layer and a lower surface isolation layer which are sequentially arranged, wherein the coating material of the upper surface modified asphalt coating layer and/or the coating material of the lower surface modified asphalt coating layer is the fusible modified asphalt of any one of claims 1 to 4.

8. The fusible modified asphalt waterproofing membrane according to claim 7,

the isolating material of the upper surface isolating layer and the isolating material of the lower surface isolating layer are respectively and independently selected from at least one of polyester film, polyethylene film, fine sand and shale slice;

the reinforcement layer is selected from a polyester base or a glass fiber base;

the thickness of the waterproof roll is 3.0-4.5mm, and the thickness of the upper surface modified asphalt layer and the thickness of the lower surface modified asphalt layer are respectively and independently 1.0-1.6 mm.

9. The method for preparing the fusible modified asphalt waterproofing membrane according to claim 7 or 8, characterized by comprising: respectively coating the coating material of the upper surface modified asphalt layer and the coating material of the lower surface modified asphalt layer on the upper surface and the lower surface of the reinforcement layer which are soaked and extruded to obtain a precursor; and respectively coating the isolation material of the upper surface isolation layer and the isolation material of the lower surface isolation layer on the upper surface and the lower surface of the precursor, and cooling, shaping and rolling to obtain the fusible modified asphalt waterproof coiled material.

10. The method for preparing the fusible modified asphalt waterproofing membrane according to claim 9, wherein the temperature of the reinforcement layer coated with the coating material of the upper surface modified asphalt layer and the temperature of the reinforcement layer coated with the coating material of the lower surface modified asphalt layer after impregnation and extrusion are each independently 160-165 ℃.

Technical Field

The invention belongs to the field of waterproof coiled materials, and particularly relates to fusible modified asphalt, a fusible modified asphalt waterproof coiled material and a preparation method thereof.

Background

The modified asphalt waterproof coiled material plays an extremely important role in building waterproof engineering, is widely applied to the waterproofing of the ground, the underground and other special structures of buildings, and is a waterproof material with wide range and large quantity. The current specification and variety of the modified asphalt waterproof coiled material is developed from single asphalt felt in the 50 th of the 20 th century to dozens of high-grade and medium-grade coiled materials with different physical properties.

In foreign countries, the modified asphalt waterproof coiled material occupies a dominant position in waterproof coiled materials, more than 200 specifications of the modified asphalt waterproof coiled material exist at present, and the proportion of asphalt-based waterproof coiled materials in national waterproof material products such as American, Japanese, Italian, French, Germany and the like is more than 65%, and the proportion of asphalt-based waterproof coiled materials in the national waterproof material products is up to 90%. In China, the modified asphalt waterproof coiled material occupies about 70 percent of market share. The modified asphalt waterproof coiled material has good waterproof performance, can be constructed by a hot melting method all the year round, and is firm and reliable in bonding.

The modified asphalt waterproof coiled material is formed by coating modified asphalt on two sides of a polyester base or a glass fiber base and then coating isolation materials on the upper surface and the lower surface. However, in the coiled material production process, in order to guarantee waterproofing membrane's high temperature resistance, often can be through adding a large amount of modifiers and filler in the modified asphalt coating material, but this can lead to coating material viscosity great, when influencing production efficiency, increase the later stage construction degree of difficulty (it is poor to go out oil, the duration and degree of heating is difficult to control during the construction, the coiled material appears easily that the oil is not thoroughly leaded to forming to be stained with and the banding and cross fire and lead to coiled material inner structure to be destroyed and influence later stage water-proof effects). Moreover, in order to facilitate production and reduce the resistance of the modified asphalt coating material during production, the temperature of the modified asphalt coating material during workshop production is generally controlled between 180 ℃ and 190 ℃, and the enterprise is undoubtedly required to maintain the high production temperature for a long time and consume huge production cost and energy loss.

Therefore, in order to improve the construction efficiency of the waterproof roll product and the oil-yielding property after construction, improve the production efficiency, reduce the production cost (reduce the swelling time) and improve the application effect of product construction on the basis of not affecting the high-temperature stability, the low-temperature joint peeling strength and other performances of the waterproof roll, a novel modified asphalt and a preparation method thereof are urgently needed to be provided, and a novel modified asphalt waterproof roll and a preparation method thereof are further provided.

Disclosure of Invention

The invention aims to provide fusible modified asphalt, a fusible modified asphalt waterproof coiled material and a preparation method thereof aiming at the defects of the prior art. The fusible modified asphalt provided by the invention improves the construction efficiency of the fusible modified asphalt waterproof coiled material product and the oil outlet performance after construction, improves the production efficiency, reduces the production cost and improves the construction application effect of the fusible modified asphalt waterproof coiled material product.

In order to achieve the above object, a first aspect of the present invention provides a fusible modified asphalt, comprising the following components: the asphalt modifier comprises blended asphalt, SBS, polymer auxiliary agent, rubber modifier, desulfurization activation catalyst and inorganic filler, and optionally comprises petroleum resin; the blended asphalt comprises: base asphalt, aromatic hydrocarbons and polyolefin resins.

The second aspect of the present invention provides a method for preparing the fusible modified asphalt, which comprises the following steps:

s1: uniformly mixing the SBS and the molten blended asphalt to obtain a first mixture;

s2: uniformly mixing and stirring the desulfurization activation catalyst, the polymer auxiliary agent, the rubber modifier and the first mixture to obtain a second mixture;

s3: and mixing and stirring the inorganic filler and the second mixture uniformly to obtain the fusible modified asphalt.

The invention provides a fusible modified asphalt waterproof coiled material, which comprises an upper surface isolation layer, an upper surface modified asphalt layer, a reinforcement layer, a lower surface modified asphalt layer and a lower surface isolation layer which are sequentially arranged, wherein the coating material of the upper surface modified asphalt coating layer and/or the coating material of the lower surface modified asphalt coating layer is the fusible modified asphalt.

The fourth aspect of the invention provides a preparation method of the fusible modified asphalt waterproof coiled material, which comprises the following steps: respectively coating the coating material of the upper surface modified asphalt layer and the coating material of the lower surface modified asphalt layer on the upper surface and the lower surface of the reinforcement layer which are soaked and extruded to obtain a precursor; and respectively coating the isolation material of the upper surface isolation layer and the isolation material of the lower surface isolation layer on the upper surface and the lower surface of the precursor, and cooling, shaping and rolling to obtain the fusible modified asphalt waterproof coiled material.

The technical scheme of the invention has the following beneficial effects:

(1) according to the invention, aromatic hydrocarbon and polyolefin resin are added into the matrix asphalt to form the blended asphalt, so that the high-temperature stability of the modified asphalt waterproof coiled material is improved, the penetration degree of a system is reduced, the softening deformation temperature of the system is reduced, and the construction performance of the modified asphalt waterproof coiled material is improved (the construction is easy to melt, the oil yield is good, and the required time is reduced under the condition of achieving the same oil yield effect).

(2) According to the invention, the desulfurization activation catalyst is added into the components of the fusible modified asphalt, so that the desulfurization process and desulfurization rate of the rubber modifier are accelerated, the swelling time of the rubber modification is reduced, the efficiency of re-recombination regeneration after desulfurization of the rubber modifier is improved, the viscosity and adhesiveness of the rubber modifier are increased, the adhesiveness of the modified asphalt during construction is improved (the adhesiveness is good, and a three-dimensional edge sealing effect can be formed after oil is produced at the edge), and the waterproof effect of the modified asphalt waterproof coiled material is improved.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Detailed Description

Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The invention provides a fusible modified asphalt, which comprises the following components: the asphalt modifier comprises blended asphalt, SBS, polymer auxiliary agent, rubber modifier, desulfurization activation catalyst and inorganic filler, and optionally comprises petroleum resin; the blended asphalt comprises: base asphalt, aromatic hydrocarbons and polyolefin resins.

According to the present invention, preferably, the fusible modified asphalt comprises the following components in parts by weight: 50-55 parts of mixed asphalt, 10-20 parts of SBS, 2-3 parts of polymer additive, 10-15 parts of rubber modifier, 0.1-0.5 part of desulfurization activating catalyst and 15-32 parts of inorganic filler, and optionally 1-2 parts of petroleum resin;

the blended asphalt comprises, based on the total weight of the blended asphalt: 89-97.5 wt% of base asphalt, 2-10 wt% of aromatic hydrocarbon and 0.5-1 wt% of polyolefin resin.

In the invention, the desulfurization process and the desulfurization rate of the rubber modifier are accelerated by adding the desulfurization activation catalyst, so that the rubber modifier is recombined and regenerated again after being desulfurized, the viscosity and the adhesiveness of the rubber modifier are increased, the adhesiveness of the modified asphalt during construction is improved, and the waterproof effect is improved. Therefore, the special blend asphalt (which can be called F150 special blend asphalt) designed for the waterproof coiled material is added into the fusible modified asphalt, and the blend asphalt is prepared by adding aromatic hydrocarbon and polyolefin resin additives with specific molecular weights into matrix asphalt, so that the high-temperature stability of the fusible modified asphalt is improved, the penetration degree of the fusible modified asphalt is reduced, and the softening point is obviously improved.

In the present invention, the aromatic hydrocarbon is selected from those commonly used and well known in the art to achieve similar effects, and the amount thereof may be specifically determined, and is preferably 2 to 10%. The polyolefin resin is selected from those commonly used and well known in the art to achieve similar effects, and the amount thereof may be specifically determined, and is preferably 0.5 to 1%.

According to the invention, the SBS is added into the fusible modified asphalt, so that the prepared modified asphalt endows the modified asphalt waterproof coiled material with high tensile strength and high elongation, and has strong adaptability to base shrinkage, deformation and cracking. According to the present invention, preferably, the SBS is a star type SBS having a styrene content of 25-35 wt%, a molecular weight of 15-35 ten thousand and a melt flow rate of 0.05-3g/10 min.

According to the present invention, preferably, the polymer auxiliary is polyethylene wax.

According to the present invention, it is preferable that the mesh number of the rubber-based modifier is 60 to 80 mesh.

According to the present invention, preferably, the desulfurization activating catalyst is at least one of aromatic hydrocarbon disulfides, phenol resin monomers and disulfide oligomer activators.

According to the invention, preferably, the inorganic filler is heavy calcium powder and/or talcum powder, the mesh number of the heavy calcium powder is 400-400 meshes, and the mesh number of the talcum powder is 200-400 meshes.

According to the present invention, preferably, the petroleum resin is a C5 hydrogenated petroleum resin and/or a C9 hydrogenated petroleum resin.

According to the invention, preferably, the base asphalt is 90# asphalt and/or 70# asphalt.

According to the present invention, preferably, the blended asphalt is prepared by a method comprising the steps of: and mixing and stirring the matrix asphalt, the aromatic hydrocarbon and the polyolefin resin uniformly to obtain the blended asphalt.

According to the invention, the temperature of the mixing and stirring is preferably 140-170 ℃ and the time is 30-360 min.

The second aspect of the present invention provides a method for preparing the fusible modified asphalt, which comprises the following steps:

s1: uniformly mixing the SBS and the molten blended asphalt to obtain a first mixture;

s2: uniformly mixing and stirring the desulfurization activation catalyst, the polymer auxiliary agent, the rubber modifier and the first mixture to obtain a second mixture;

s3: and reducing the inorganic filler to be mixed with the second mixture and uniformly stirring to obtain the fusible modified asphalt.

In the present invention, in step S1, the SBS is uniformly mixed with the molten asphalt blend, and the SBS is swollen in the molten asphalt blend to obtain a first mixture, and according to the present invention, the temperature of the uniform mixing is preferably 160-180 ℃ for 2.5h-3.5 h.

In the present invention, in step S2, the desulfurization activation catalyst, the polymer additive, the rubber modifier and the first mixture are mixed and stirred uniformly to obtain a second mixture in which the rubber modifier is swelled for desulfurization, and according to the present invention, it is preferable that the temperature of the mixing and stirring in step S2 is 160-170 ℃.

According to the present invention, it is preferable that the temperature of the mixing and stirring of step S3 is 160-170 ℃.

The invention provides a fusible modified asphalt waterproof coiled material, which comprises an upper surface isolation layer, an upper surface modified asphalt layer, a reinforcement layer, a lower surface modified asphalt layer and a lower surface isolation layer which are sequentially arranged, wherein the coating material of the upper surface modified asphalt coating layer and/or the coating material of the lower surface modified asphalt coating layer is the fusible modified asphalt.

In the invention, the fusible modified asphalt adopted by the coating material of the upper surface modified asphalt coating layer and/or the coating material of the lower surface modified asphalt coating layer can be the same or different. The isolation material of the upper surface isolation layer and the isolation material of the lower surface isolation layer can be the same or different.

According to the present invention, preferably, the insulation material of the upper surface insulation layer and the insulation material of the lower surface insulation layer are each independently selected from at least one of a polyester film, a polyethylene film, fine sand, and a shale sheet.

In the invention, the polyester film can be directly removed in a self-adhesive product as an isolating layer, the polyethylene film is easy to melt when being melted, and the fine sand and the shale slices can be used in an open environment.

According to the invention, the reinforcement layer is preferably selected from polyester or glass fiber bases, preferably polyester bases, which are characterized by high tensile stress and elongation and can meet the stress-strain requirements under severe conditions.

The thickness of the waterproof coiled material can be selected according to different regions and requirements, and from the viewpoints of ensuring waterproofness and facilitating transportation and construction, according to the invention, the thickness of the waterproof coiled material is preferably 3.0-4.5mm, and the thickness of the upper surface modified asphalt layer and the thickness of the lower surface modified asphalt layer are respectively and independently 1.0-1.6 mm.

The fourth aspect of the invention provides a preparation method of the fusible modified asphalt waterproof coiled material, which comprises the following steps: respectively coating the coating material of the upper surface modified asphalt layer and the coating material of the lower surface modified asphalt layer on the upper surface and the lower surface of the reinforcement layer which are soaked and extruded to obtain a precursor; and respectively coating the isolation material of the upper surface isolation layer and the isolation material of the lower surface isolation layer on the upper surface and the lower surface of the precursor, and cooling, shaping and rolling to obtain the fusible modified asphalt waterproof coiled material.

According to the present invention, preferably, the temperature of the reinforcement layer coated with the impregnating and drying agent of the upper surface modified asphalt layer and the temperature of the reinforcement layer coated with the coating agent of the lower surface modified asphalt layer are respectively 160-165 ℃.

The present invention is specifically illustrated by the following examples.

In various embodiments of the present invention, the,

the SBS is either polymerized by anionic methods well known to those skilled in the art or is commercially available, for example, at least one selected from the group consisting of swallowed 4402, santos pomona 4303 and prunus leiocarpa 3411.

Example 1

The embodiment provides a fusible modified asphalt, which comprises the following components in parts by weight: 50 parts of blended asphalt, 10 parts of star-shaped SBS with the styrene content of 25-35 wt%, the molecular weight of 15-35 ten thousand and the melt flow rate of 0.05-3g/10min, 2 parts of polyethylene wax, 15 parts of 60-mesh rubber modifier, 0.1 part of aromatic hydrocarbon disulfide activator and 22.9 parts of 400-mesh talcum powder;

the blended asphalt comprises, based on the total weight of the blended asphalt: 95 wt% of base asphalt, 4.5 wt% of aromatic hydrocarbon and 0.5 wt% of polyolefin resin.

Example 2

The embodiment provides a fusible modified asphalt, which comprises the following components in parts by weight: 55 parts of blended asphalt, 15 parts of star-shaped SBS with the styrene content of 25-35 wt%, the molecular weight of 15-35 ten thousand and the melt flow rate of 0.05-3g/10min, 2 parts of polyethylene wax, 15 parts of 60-mesh rubber modifier, 0.1 part of aromatic hydrocarbon disulfide activator and 12.9 parts of 400-mesh talcum powder;

the blended asphalt comprises, based on the total weight of the blended asphalt: 95 wt% of base asphalt, 4.5 wt% of aromatic hydrocarbon and 0.5 wt% of polyolefin resin.

Example 3

The embodiment provides a fusible modified asphalt, which comprises the following components in parts by weight: 55 parts of blended asphalt, 15 parts of star-shaped SBS with the styrene content of 25-35 wt%, the molecular weight of 15-35 ten thousand and the melt flow rate of 0.05-3g/10min, 2 parts of polyethylene wax, 15 parts of 60-mesh rubber modifier, 0.2 part of aromatic hydrocarbon disulfide activator and 12.8 parts of 400-mesh talcum powder;

the blended asphalt comprises, based on the total weight of the blended asphalt: 95 wt% of base asphalt, 4.5 wt% of aromatic hydrocarbon and 0.5 wt% of polyolefin resin.

Example 4

The embodiment provides a fusible modified asphalt, which comprises the following components in parts by weight: 50 parts of blended asphalt, 10 parts of star-shaped SBS with the styrene content of 25-35 wt%, the molecular weight of 15-35 ten thousand and the melt flow rate of 0.05-3g/10min, 2 parts of polyethylene wax, 10 parts of 60-mesh rubber modifier, 0.1 part of aromatic hydrocarbon disulfide activator and 27.9 parts of 400-mesh talcum powder;

the blended asphalt comprises, based on the total weight of the blended asphalt: 95 wt% of base asphalt, 4.5 wt% of aromatic hydrocarbon and 0.5 wt% of polyolefin resin.

Example 5

The embodiment provides a fusible modified asphalt, which comprises the following components in parts by weight: 50 parts of blended asphalt, 10 parts of star-shaped SBS with the styrene content of 25-35 wt%, the molecular weight of 15-35 ten thousand and the melt flow rate of 0.05-3g/10min, 3 parts of polyethylene wax, 15 parts of 60-mesh rubber modifier, 0.1 part of aromatic hydrocarbon disulfide activator and 21.9 parts of 400-mesh talcum powder;

the blended asphalt comprises, based on the total weight of the blended asphalt: 95 wt% of base asphalt, 4.5 wt% of aromatic hydrocarbon and 0.5 wt% of polyolefin resin.

Example 6

The embodiment provides a preparation method of the fusible modified asphalt, which comprises the following steps:

s1: uniformly mixing the SBS with the molten blended asphalt at the constant temperature of 170 ℃, wherein the SBS is swelled in the molten blended asphalt, and the swelling time is usually 2.5h, so as to obtain a first mixture; the blended asphalt is prepared by the method comprising the following steps: and mixing and stirring the matrix asphalt, the aromatic hydrocarbon and the polyolefin resin for 60min at the temperature of 165 ℃ to obtain the blended asphalt.

S2: uniformly mixing and stirring the desulfurization activation catalyst, the polymer auxiliary agent, the rubber modifier and the first mixture at a constant temperature of 170 ℃ to obtain a second mixture;

s3: and at the temperature of 165 ℃, uniformly mixing and stirring the inorganic filler and the second mixture to obtain the fusible modified asphalt.

Example 7

The embodiment provides a fusible modified asphalt waterproof roll, which comprises an upper surface isolation layer, an upper surface modified asphalt layer, a reinforcement layer, a lower surface modified asphalt layer and a lower surface isolation layer which are sequentially arranged, wherein the coating material of the upper surface modified asphalt coating layer and the coating material of the lower surface modified asphalt coating layer are fusible modified asphalt described in any one of embodiments 1-5.

The isolating material of the upper surface isolating layer and the isolating material of the lower surface isolating layer are both polyethylene films

The reinforcement layer is selected from a polyester carcass;

the thickness of waterproofing membrane is 4.0mm, the thickness of upper surface modified asphalt layer and the thickness of lower surface modified asphalt layer are 1.4mm independently respectively.

The preparation method of the fusible modified asphalt waterproof coiled material comprises the following steps: respectively coating the coating material of the upper surface modified asphalt layer and the coating material of the lower surface modified asphalt layer on the upper surface and the lower surface of the reinforcement layer which are soaked and squeezed to obtain precursors at 165 ℃; and respectively coating the isolation material of the upper surface isolation layer and the isolation material of the lower surface isolation layer on the upper surface and the lower surface of the precursor, and cooling, shaping and rolling to obtain the fusible modified asphalt waterproof coiled material.

Comparative example 1

This comparative example provides a fusible modified asphalt that differs from example 1 in that polyethylene wax is not included in the components of the fusible modified asphalt of this comparative example.

The preparation method of the fusible modified asphalt and the preparation method of the fusible modified asphalt waterproof coiled material prepared by the fusible modified asphalt are the same as the methods of the examples 6 and 7.

Comparative example 2

This comparative example provides a fusible modified asphalt which is different from example 1 in that the weight part of the star-shaped SBS having a styrene content of 25 to 35 wt%, a molecular weight of 15 to 35 ten thousand, and a melt flow rate of 0.05 to 3g/10min was adjusted to 5 parts in the components of the fusible modified asphalt of this comparative example.

The preparation method of the fusible modified asphalt and the preparation method of the fusible modified asphalt waterproof coiled material prepared by the fusible modified asphalt are the same as the methods of the examples 6 and 7.

Comparative example 3

This comparative example provides a fusible modified asphalt that differs from example 1 in that the component of the fusible modified asphalt of this comparative example does not include a desulfurization activation catalyst.

The preparation method of the fusible modified asphalt and the preparation method of the fusible modified asphalt waterproof coiled material prepared by the fusible modified asphalt are the same as the methods of the examples 6 and 7.

Comparative example 4

This comparative example provides a fusible modified asphalt that differs from example 1 in that in the components of the fusible modified asphalt of this comparative example, the blend asphalt is replaced with the base asphalt.

The preparation method of the fusible modified asphalt and the preparation method of the fusible modified asphalt waterproof coiled material prepared by the fusible modified asphalt are the same as the methods of the examples 6 and 7.

Comparative example 5

This comparative example provides a fusible modified asphalt that differs from example 1 in that the rubber-based modifier is adjusted to 20 parts by weight in the components of the fusible modified asphalt of this comparative example.

The preparation method of the fusible modified asphalt and the preparation method of the fusible modified asphalt waterproof coiled material prepared by the fusible modified asphalt are the same as the methods of the examples 6 and 7.

Comparative example 6

This comparative example provides a fusible modified asphalt that differs from example 1 in that the weight part of the desulfurization activation catalyst was adjusted to 0.6 part in the components of the fusible modified asphalt of this comparative example.

The preparation method of the fusible modified asphalt and the preparation method of the fusible modified asphalt waterproof coiled material prepared by the fusible modified asphalt are the same as the methods of the examples 6 and 7.

Test example 1

The modified asphalt waterproof rolls prepared from the fusible modified asphalt of examples 1 to 5 and comparative examples 1 to 6 were tested for their properties:

the heat resistance test is carried out according to GB/T328.11, if the test sample flows, bubbles or slides at the temperature of below 105 ℃, the heat resistance result is unqualified, otherwise, the heat resistance result is qualified;

the low temperature flexibility test is tested according to GB/T328.14;

water repellency test according to GB/T328.10;

the construction oil discharge is the width of a coating material flowing out of the edge of a coiled material after simulation construction is carried out under the same flame and melting time.

The test results are shown in table 1.

TABLE 1 test results

With reference to table 1, it can be seen from comparison between example 1 and comparative example 1 that the polyethylene wax can reduce the viscosity of the modified asphalt while ensuring the properties such as heat resistance. Comparing example 1 with comparative example 2, it can be seen that the low temperature performance cannot be satisfied when the amount of SBS added is less than 10 parts by weight. Comparing example 1 with comparative example 3, it can be seen that the addition of the desulfurization activator can increase the swelling rate of the rubber modifier and can improve the oil production performance of the rubber modifier. Comparing example 1 with comparative example 4, it can be seen that the special blended asphalt prepared by using the base asphalt, aromatic hydrocarbon and polyolefin resin additive can avoid the influence on the high temperature performance of the modified asphalt under the condition of adding the activating agent.

Test example 2

In order to more intuitively reflect the influence of the blended asphalt on the softening point and penetration of the system, the modified asphalt waterproof rolls prepared from the fusible modified asphalt of example 1 and comparative example 4 were subjected to a waterproof roll production test, and the results are shown in table 2.

TABLE 2 test results

Item	Example 1	Comparative example 4
			Softening point, DEG C	111	103
Penetration degree	42	48
			Viscosity of the oil	120	120

With reference to table 2, it can be seen from comparative example 1 and comparative example 4 that the viscosity of the fusible modified asphalt prepared by compounding the asphalt blend and the activating agent (the desulfurization activating catalyst and the rubber modifier) is consistent, the softening point is increased, and the penetration is decreased, so that the construction heat deformation capability of the waterproof coil product can be improved while the high-temperature performance of the system is ensured.

In addition, when the fusible modified asphalt is used for producing the fusible modified asphalt waterproof coiled material, the production efficiency can be obviously improved.

Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.