阅读说明：本技术 一种环保阻燃型改性沥青防水卷材及其制备方法 (Environment-friendly flame-retardant modified asphalt waterproof coiled material and preparation method thereof ) 是由 钟小琼 于 2021-08-29 设计创作，主要内容包括：本发明属于防水材料技术领域,具体涉及一种环保阻燃型改性沥青防水卷材及其制备方法。本发明研制的产品中,包括至少两层二氧化硅气凝胶层,至少一层沥青层,至少一层热塑性弹性体层；所述热塑性弹性体层分布于所述二氧化硅气凝胶层和所述沥青层之间,且两个相对设置的所述二氧化硅气凝胶层将所述热塑性弹性体层和所述沥青层夹设于其中；在制备时,在聚酯胎基表面设置二氧化硅气凝胶层,再于所述二氧化硅气凝胶层表面设置加热软化后的热塑性弹性体层,待所述热塑性弹性体层冷却至室温后,再涂覆加热熔融后的沥青层,待所述沥青层冷却至60-80℃时,再设置加热软化后的热塑性弹性体层,再趁热设置一层二氧化硅气凝胶层。(The invention belongs to the technical field of waterproof materials, and particularly relates to an environment-friendly flame-retardant modified asphalt waterproof coiled material and a preparation method thereof. The product developed by the invention comprises at least two silica aerogel layers, at least one asphalt layer and at least one thermoplastic elastomer layer; the thermoplastic elastomer layer is distributed between the silica aerogel layer and the asphalt layer, and the two oppositely arranged silica aerogel layers clamp the thermoplastic elastomer layer and the asphalt layer; during preparation, a silicon dioxide aerogel layer is arranged on the surface of a polyester tire base, a thermoplastic elastomer layer which is heated and softened is arranged on the surface of the silicon dioxide aerogel layer, after the thermoplastic elastomer layer is cooled to room temperature, a heated and melted asphalt layer is coated, after the asphalt layer is cooled to 60-80 ℃, the heated and softened thermoplastic elastomer layer is arranged, and a silicon dioxide aerogel layer is arranged while the asphalt layer is hot.)

1. An environment-friendly flame-retardant modified asphalt waterproof coiled material is characterized by comprising at least two silica aerogel layers, at least one asphalt layer and at least one thermoplastic elastomer layer;

the thermoplastic elastomer layer is distributed between the silica aerogel layer and the asphalt layer, and the two oppositely arranged silica aerogel layers clamp the thermoplastic elastomer layer and the asphalt layer;

the asphalt layer comprises a flame retardant;

the flame retardant is selected from any one of halogen-containing flame retardants, nitrogen-containing flame retardants and phosphorus-containing flame retardants.

2. The environment-friendly flame-retardant modified asphalt waterproofing membrane according to claim 1, wherein the thickness of the silica aerogel layer is: thickness of the asphalt layer: the thickness of the thermoplastic elastomer layer is 1-3: 5-10: 2-4.

3. The roll of environmental-friendly flame-retardant modified asphalt waterproofing material according to claim 1, wherein a fluorosilane is further included between the silica aerogel layer and the thermoplastic elastomer layer or between the silica aerogel layer and the asphalt layer.

4. The environment-friendly flame-retardant modified asphalt waterproofing membrane according to claim 1, wherein the thermoplastic elastomer is at least one selected from the group consisting of TPU, TPV, TPF, TPB, TPI, SBS, SEBS, TPVC.

5. The environment-friendly flame-retardant modified asphalt waterproofing membrane according to claim 1, wherein nano silica is sandwiched between the thermoplastic elastomer layer and the asphalt layer.

6. The environment-friendly flame-retardant modified asphalt waterproof coiled material according to claim 1, comprising two layers of thermoplastic elastomers, wherein the two layers of thermoplastic elastomers sandwich one asphalt layer, the two layers of silica aerogel layers are distributed on two sides of the two layers of thermoplastic elastomers, and the two layers of thermoplastic elastomers sandwiching the asphalt layer are clamped to form a sandwich structure.

7. The preparation method of the environment-friendly flame-retardant modified asphalt waterproof coiled material is characterized by comprising the following specific preparation steps of:

arranging a silicon dioxide aerogel layer on the surface of a polyester tire base, arranging a thermoplastic elastomer layer which is heated and softened on the surface of the silicon dioxide aerogel layer, coating an asphalt layer which is heated and melted after the thermoplastic elastomer layer is cooled to room temperature, and arranging a silicon dioxide aerogel layer when the asphalt layer is cooled to 60-80 ℃;

adding a flame retardant in the process of heating and melting the asphalt layer;

the flame retardant is selected from any one of halogen-containing flame retardants, nitrogen-containing flame retardants and phosphorus-containing flame retardants.

8. The preparation method of the environment-friendly flame-retardant modified asphalt waterproof roll according to claim 7, wherein the specific preparation steps further comprise:

arranging a silicon dioxide aerogel layer on the surface of a polyester tire base, arranging a thermoplastic elastomer layer after heating and softening on the surface of the silicon dioxide aerogel layer, coating an asphalt layer after heating and melting after the thermoplastic elastomer layer is cooled to room temperature, arranging the thermoplastic elastomer layer after heating and softening when the asphalt layer is cooled to 60-80 ℃, and arranging a silicon dioxide aerogel layer while hot.

9. The preparation method of the environment-friendly flame-retardant modified asphalt waterproof roll according to claim 7, wherein the specific preparation steps further comprise: coating a layer of nano silica between the thermoplastic elastomer layer and the asphalt layer.

Technical Field

The invention belongs to the technical field of waterproof materials. More particularly relates to an environment-friendly flame-retardant modified asphalt waterproof coiled material and a preparation method thereof.

Background

The polymer modified asphalt waterproof coiled material is one kind of traditional waterproof material, and is one kind of waterproof product with base paper, fiber felt, fiber cloth, metal foil, plastic film, fabric, etc. compounded and coated with polymer modified asphalt. The polymer modified asphalt waterproof coiled material has the advantages of high temperature resistance, low temperature resistance, good impermeability, high tensile strength, strong adaptability, good toughness, fatigue resistance, ultraviolet resistance, radiation heat aging resistance, stable performance, long service life, low maintenance cost and the like, and plays an important role in waterproof materials. The self-adhesive waterproof roll has higher extensibility and low-temperature flexibility, and has the biggest characteristic of no need of hot-melt construction, and is gradually the mainstream waterproof material at present.

Asphalt flammability is an unavoidable problem in building fire safety. Because the asphalt is a flammable material, when the asphalt is combusted, the asphalt is firstly melted, dripped and flowed, then the molten beads are combusted, and then the combusted molten beads are dripped and flowed, so that the fire spread is enlarged. The asphalt can also decompose flammable gases such as hydrogen, methane and the like in the combustion process, and the combustion of the flammable gases enhances the fire behavior. Therefore, the use of the asphalt waterproof coiled material in buildings with special fireproof requirements is greatly limited, and the development of the research on the flame-retardant asphalt waterproof coiled material has important practical significance.

In the existing asphalt flame-retardant modification, flame retardants are mostly added, the inorganic flame retardants have poor compatibility with organic asphalt matrixes, and the organic flame retardants are easy to migrate and finally cause the problem of reduced flame-retardant effect.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects and defects that the flame retardant is easy to migrate and separate from an asphalt matrix in the preparation and storage processes of a product after the flame retardant is added in the using process of the existing asphalt waterproof coiled material, so that the flame retardant effect is reduced, and provides an environment-friendly flame-retardant modified asphalt waterproof coiled material and a preparation method thereof.

The invention aims to provide an environment-friendly flame-retardant modified asphalt waterproof coiled material.

The invention also aims to provide a preparation method of the environment-friendly flame-retardant modified asphalt waterproof coiled material.

The above purpose of the invention is realized by the following technical scheme:

an environment-friendly flame-retardant modified asphalt waterproof coiled material comprises at least two silica aerogel layers, at least one asphalt layer and at least one thermoplastic elastomer layer;

the thermoplastic elastomer layer is distributed between the silica aerogel layer and the asphalt layer, and the two oppositely arranged silica aerogel layers clamp the thermoplastic elastomer layer and the asphalt layer;

the asphalt layer comprises a flame retardant;

the flame retardant is selected from any one of halogen-containing flame retardants, nitrogen-containing flame retardants and phosphorus-containing flame retardants.

According to the technical scheme, the asphalt layer is clamped between the two silica aerogel layers, and in the actual use process of a product, firstly, the silica aerogel layers have excellent thermal fracture resistance, so that thermal shock on the asphalt layer caused by heat when the asphalt layer is heated at high temperature can be avoided; secondly, even if heat is slowly transferred to the asphalt layer to cause asphalt melting, the melted asphalt can be adsorbed by the pore structure of the silica aerogel layer, so that the asphalt is prevented from rapidly flowing, and the adsorbed asphalt in the pores is slowly pyrolyzed by combining the excellent heat insulation effect of the silica aerogel, so that the asphalt is prevented from flowing in a large area or being thermally out of control; moreover, if the flame retardant added in the asphalt layer migrates during the preparation or use of the product, the flame retardant is trapped at the interface between the silica aerogel layer and the asphalt layer, so that a flame-retardant layer is formed at the interface, when heat is gradually transferred to the asphalt layer through the silica aerogel layer, the flame-retardant layer at the interface is preferentially decomposed to generate flame-retardant gas, so that a gas layer is formed at the interface between the silica aerogel layer and the asphalt layer, the gas is non-combustible, meanwhile, the heat transfer efficiency of the gas is low, the transfer of the heat to the asphalt layer is further relieved, and the flame-retardant effect of the product is improved; based on the technical scheme, the product structure is ingeniously designed, so that even if the flame retardant migrates, the migrated flame retardant still can exert excellent flame retardant effect, and the flame retardant effect is prevented from being reduced;

in addition, above-mentioned technical scheme sets up the thermoplastic elastomer layer between pitch layer and silica aerogel layer, and in the product use, as waterproofing membrane product, when moisture passes through silica aerogel layer and inwards diffuses the infiltration gradually, the hydrone is at first blockked by thermoplastic elastomer, and in addition, thermoplastic elastomer's existence can effectively be as the buffer layer, avoids in the work progress, because the coiled material warp and arouses to drop between silica aerogel layer and the pitch layer.

Preferably, the thickness of the silica aerogel layer: thickness of the asphalt layer: the thickness of the thermoplastic elastomer layer is 1-3: 5-10: 2-4.

Preferably, a fluorosilane is further included between the silica aerogel and the thermoplastic elastomer layer or between the silica aerogel and the asphalt layer.

Preferably, the thermoplastic elastomer is selected from at least one of TPU, TPV, TPF, TPB, TPI, SBS, SEBS, TPVC.

Preferably, between the thermoplastic elastomer layer and the asphalt layer, nano silica is sandwiched.

The thermoplastic elastomer and the asphalt layer are both high-molecular organic components, so that the thermoplastic elastomer and the asphalt layer have good interface compatibility, and are easy to be firmly adsorbed in the preparation process.

Preferably, the asphalt layer is sandwiched between two thermoplastic elastomers, two silica aerogel layers are distributed on two sides of the two thermoplastic elastomers, and the two thermoplastic elastomers sandwiching the asphalt layer are clamped to form a sandwich structure.

A preparation method of an environment-friendly flame-retardant modified asphalt waterproof coiled material comprises the following specific preparation steps:

coating a silicon dioxide aerogel layer on the surface of a polyester tire base, coating a thermoplastic elastomer layer which is heated and softened on the surface of the silicon dioxide aerogel layer, coating an asphalt layer which is heated and melted after the thermoplastic elastomer layer is cooled to room temperature, and coating a silicon dioxide aerogel layer when the asphalt layer is cooled to 60-80 ℃;

adding a flame retardant in the process of heating and melting the asphalt layer;

the flame retardant is selected from any one of halogen-containing flame retardants, nitrogen-containing flame retardants and phosphorus-containing flame retardants.

Preferably, the specific preparation steps further comprise:

coating a silicon dioxide aerogel layer on the surface of a polyester tire base, coating a thermoplastic elastomer layer which is heated and softened on the surface of the silicon dioxide aerogel layer, coating an asphalt layer which is heated and melted after the thermoplastic elastomer layer is cooled to room temperature, coating the thermoplastic elastomer layer which is heated and softened after the asphalt layer is cooled to 60-80 ℃, and coating a layer of silicon dioxide aerogel layer while the asphalt layer is hot.

Preferably, the specific preparation steps further comprise: coating a layer of nano silica between the thermoplastic elastomer layer and the asphalt layer.

Detailed Description

The present invention is further illustrated by the following specific examples, which are not intended to limit the invention in any way. Reagents, methods and apparatus used in the present invention are conventional in the art unless otherwise indicated.

Unless otherwise indicated, reagents and materials used in the following examples are commercially available.

Example 1

Preparation of asphalt coating material: according to the mass ratio of 10: 1, weighing 70# road petroleum asphalt and naphthenic oil, heating the 70# road petroleum asphalt to 180 ℃ until the 70# road petroleum asphalt is completely melted, adding the naphthenic oil while the mixture is hot, stirring and mixing the mixture for 60min at the rotating speed of 200r/min by using a stirrer, and preserving heat to obtain an asphalt coating material;

preparation of silica aerogel: mixing tetraethoxysilane and water, hydrolyzing, forming sheet-shaped gel in a mold, soaking the gel in an ethanol/water mixture of original sol, standing and aging for 48 hours at the temperature of 45 ℃, adding trimethyl fluorosilane with the mass of 5% of that of the gel in the aging process, taking out the gel after the aging is finished, and drying to constant weight at the temperature of 85 ℃ to obtain silicon dioxide aerogel;

preparation of the softened thermoplastic elastomer: heating the thermoplastic elastomer to the temperature of the softening point of the thermoplastic elastomer of more than 5-10 ℃ under the protection of nitrogen, and preserving the heat to obtain a softened thermoplastic elastomer; the thermoplastic elastomer is TPU;

preparing a waterproof coiled material product:

preparing a polyester tire base layer;

coating a structural adhesive on the surface of a polyester tire substrate, and arranging silica aerogel on the surface of the structural adhesive to form a silica aerogel layer; then, arranging the softened thermoplastic elastomer on the surface of the silicon dioxide aerogel, spreading nano silicon dioxide on the surface of the thermoplastic elastomer layer while the thermoplastic elastomer is hot, and cooling the thermoplastic elastomer to room temperature to form a thermoplastic elastomer layer;

adding a flame retardant accounting for 3% of the mass of the asphalt coating material into the heat-insulating asphalt coating material, stirring and mixing the mixture for 10min at the rotating speed of 300r/min by using a stirrer, coating the mixture on the surface of the thermoplastic elastomer paved with the nano-silica to form an asphalt layer, paving the nano-silica on the surface of the asphalt coating material when the asphalt coating material is cooled to 60 ℃, arranging a softened thermoplastic elastomer on the surface of the asphalt coating material paved with the nano-silica while the asphalt coating material is hot to form a thermoplastic elastomer layer, and then arranging a silica aerogel layer on the surface of the thermoplastic elastomer while the asphalt coating material is hot to form a silica aerogel layer; obtaining the product;

the flame retardant is decabromodiphenylethane;

the using amount of the nano silicon dioxide is 2 percent of the mass of the asphalt coating material;

thickness of silica aerogel layer: thickness of the asphalt layer: the thickness of the thermoplastic elastomer layer is 1: 5: 2.

example 2

Preparation of asphalt coating material: according to the mass ratio of 15: 1, weighing 70# road petroleum asphalt and naphthenic oil, heating 70# road petroleum asphalt to 185 ℃ until 70# road petroleum asphalt is completely melted, adding the naphthenic oil while the mixture is hot, stirring and mixing the mixture for 80min at the rotating speed of 250r/min by using a stirrer, and preserving heat to obtain an asphalt coating material;

preparation of silica aerogel: mixing tetraethoxysilane and water, hydrolyzing, forming sheet-shaped gel in a mould, soaking the gel in an ethanol/water mixture of original sol, standing and aging for 56 hours at the temperature of 50 ℃, adding trimethyl fluorosilane with the mass of 6% of that of the gel in the aging process, taking out the gel after the aging is finished, and drying to constant weight at the temperature of 88 ℃ to obtain silicon dioxide aerogel;

preparation of the softened thermoplastic elastomer: heating the thermoplastic elastomer to the softening point temperature of the thermoplastic elastomer above 8 ℃ under the protection of nitrogen, and preserving heat to obtain a softened thermoplastic elastomer; the thermoplastic elastomer is TPF;

preparing a waterproof coiled material product:

preparing a polyester tire base layer;

coating a structural adhesive on the surface of a polyester tire substrate, and arranging silica aerogel on the surface of the structural adhesive to form a silica aerogel layer; then, arranging the softened thermoplastic elastomer on the surface of the silicon dioxide aerogel, spreading nano silicon dioxide on the surface of the thermoplastic elastomer layer while the thermoplastic elastomer is hot, and cooling the thermoplastic elastomer to room temperature to form a thermoplastic elastomer layer;

adding a fire retardant accounting for 5 percent of the mass of the asphalt coating material into the heat-insulating asphalt coating material, stirring and mixing the mixture for 15min at the rotating speed of 350r/min by a stirrer, then coating the mixture on the surface of the thermoplastic elastomer paved with the nano-silica to form an asphalt layer, paving the nano-silica on the surface of the asphalt coating material when the asphalt coating material is cooled to 70 ℃, then arranging a softened thermoplastic elastomer on the surface of the asphalt coating material paved with the nano-silica while the asphalt coating material is hot to form a thermoplastic elastomer layer, and then arranging a silica aerogel layer on the surface of the thermoplastic elastomer while the asphalt coating material is hot to form a silica aerogel layer; obtaining the product;

the flame retardant is tricresyl phosphate;

the using amount of the nano silicon dioxide is 3 percent of the mass of the asphalt coating material;

thickness of silica aerogel layer: thickness of the asphalt layer: the thickness of the thermoplastic elastomer layer is 2: 8: 3.

example 3

Preparation of asphalt coating material: according to the mass ratio of 20: 1, weighing 70# road petroleum asphalt and naphthenic oil, heating the 70# road petroleum asphalt to 190 ℃ until the 70# road petroleum asphalt is completely melted, adding the naphthenic oil while the mixture is hot, stirring and mixing the mixture for 90min at the rotating speed of 300r/min by using a stirrer, and preserving heat to obtain an asphalt coating material;

preparation of silica aerogel: mixing tetraethoxysilane and water, hydrolyzing, forming sheet-shaped gel in a mold, soaking the gel in an ethanol/water mixture of original sol, standing and aging for 72 hours at the temperature of 55 ℃, adding trimethyl fluorosilane with the mass of 8% of that of the gel in the aging process, taking out the gel after the aging is finished, and drying to constant weight at the temperature of 90 ℃ to obtain silicon dioxide aerogel;

preparation of the softened thermoplastic elastomer: heating the thermoplastic elastomer to the softening point temperature of the thermoplastic elastomer of more than 10 ℃ under the protection of nitrogen, and preserving heat to obtain a softened thermoplastic elastomer; the thermoplastic elastomer is SBS;

preparing a waterproof coiled material product:

preparing a polyester tire base layer;

coating a structural adhesive on the surface of a polyester tire substrate, and arranging silica aerogel on the surface of the structural adhesive to form a silica aerogel layer; then, arranging the softened thermoplastic elastomer on the surface of the silicon dioxide aerogel, spreading nano silicon dioxide on the surface of the thermoplastic elastomer layer while the thermoplastic elastomer is hot, and cooling the thermoplastic elastomer to room temperature to form a thermoplastic elastomer layer;

adding a fire retardant accounting for 6% of the mass of the asphalt coating material into the heat-insulating asphalt coating material, stirring and mixing the mixture for 20min at the rotating speed of 400r/min by a stirrer, then coating the mixture on the surface of the thermoplastic elastomer paved with the nano-silica to form an asphalt layer, paving the nano-silica on the surface of the asphalt coating material when the asphalt coating material is cooled to 80 ℃, then arranging a softened thermoplastic elastomer on the surface of the asphalt coating material paved with the nano-silica while the asphalt coating material is hot to form a thermoplastic elastomer layer, and then arranging a silica aerogel layer on the surface of the thermoplastic elastomer while the asphalt coating material is hot to form a silica aerogel layer; obtaining the product;

the flame retardant is melamine;

the using amount of the nano silicon dioxide is 4% of the mass of the asphalt coating material;

thickness of silica aerogel layer: thickness of the asphalt layer: the thickness of the thermoplastic elastomer layer is 3: 10: 4.

example 4

This example differs from example 1 in that: no nanosilica was added and the remaining conditions were kept unchanged.

Example 5

Preparation of asphalt coating material: according to the mass ratio of 10: 1, weighing 70# road petroleum asphalt and naphthenic oil, heating the 70# road petroleum asphalt to 180 ℃ until the 70# road petroleum asphalt is completely melted, adding the naphthenic oil while the mixture is hot, stirring and mixing the mixture for 60min at the rotating speed of 200r/min by using a stirrer, and preserving heat to obtain an asphalt coating material;

preparation of silica aerogel: mixing tetraethoxysilane and water, hydrolyzing, forming sheet-shaped gel in a mold, soaking the gel in an ethanol/water mixture of original sol, standing and aging for 48 hours at the temperature of 45 ℃, adding trimethyl fluorosilane with the mass of 5% of that of the gel in the aging process, taking out the gel after the aging is finished, and drying to constant weight at the temperature of 85 ℃ to obtain silicon dioxide aerogel;

preparation of the softened thermoplastic elastomer: heating the thermoplastic elastomer to the temperature of the softening point of the thermoplastic elastomer of more than 5-10 ℃ under the protection of nitrogen, and preserving the heat to obtain a softened thermoplastic elastomer; the thermoplastic elastomer is TPU;

preparing a waterproof coiled material product:

preparing a polyester tire base layer;

coating a structural adhesive on the surface of a polyester tire substrate, and arranging silica aerogel on the surface of the structural adhesive to form a silica aerogel layer; then, arranging the softened thermoplastic elastomer on the surface of the silicon dioxide aerogel, spreading nano silicon dioxide on the surface of the thermoplastic elastomer layer while the thermoplastic elastomer is hot, and cooling the thermoplastic elastomer to room temperature to form a thermoplastic elastomer layer;

adding a flame retardant accounting for 3% of the mass of the asphalt coating material into the heat-insulating asphalt coating material, stirring and mixing the mixture for 10min at the rotating speed of 300r/min by using a stirrer, coating the mixture on the surface of the thermoplastic elastomer paved with the nano silicon dioxide to form an asphalt layer, and when the asphalt coating material is cooled to 60 ℃, arranging a silicon dioxide aerogel layer on the surface of the asphalt coating material while the asphalt coating material is hot to form a silicon dioxide aerogel layer; obtaining the product;

the flame retardant is decabromodiphenylethane;

the using amount of the nano silicon dioxide is 2 percent of the mass of the asphalt coating material;

thickness of silica aerogel layer: thickness of the asphalt layer: the thickness of the thermoplastic elastomer layer is 1: 5: 2.

comparative example 1

Preparation of asphalt coating material: according to the mass ratio of 10: 1, weighing 70# road petroleum asphalt and naphthenic oil, heating the 70# road petroleum asphalt to 180 ℃ until the 70# road petroleum asphalt is completely melted, adding the naphthenic oil while the mixture is hot, stirring and mixing the mixture for 60min at the rotating speed of 200r/min by using a stirrer, and preserving heat to obtain an asphalt coating material;

preparation of the softened thermoplastic elastomer: heating the thermoplastic elastomer to the temperature of the softening point of the thermoplastic elastomer of more than 5-10 ℃ under the protection of nitrogen, and preserving the heat to obtain a softened thermoplastic elastomer; the thermoplastic elastomer is TPU;

preparing a waterproof coiled material product:

preparing a polyester tire base layer;

firstly coating structural adhesive on the surface of a polyester tire substrate, then arranging a softened thermoplastic elastomer on the surface of the structural adhesive, spreading nano silicon dioxide on the surface of the thermoplastic elastomer layer while the thermoplastic elastomer is hot, and cooling the thermoplastic elastomer to room temperature to form a thermoplastic elastomer layer;

adding a flame retardant accounting for 3% of the mass of the asphalt coating material into the heat-insulating asphalt coating material, stirring and mixing the mixture for 10min at the rotating speed of 300r/min by using a stirrer, then coating the mixture on the surface of the thermoplastic elastomer paved with the nano-silica to form an asphalt layer, paving the nano-silica on the surface of the asphalt coating material when the asphalt coating material is cooled to 60 ℃, then arranging a softened thermoplastic elastomer on the surface of the asphalt coating material paved with the nano-silica while the asphalt coating material is hot to form a thermoplastic elastomer layer, and cooling to obtain a product;

the flame retardant is decabromodiphenylethane;

the using amount of the nano silicon dioxide is 2 percent of the mass of the asphalt coating material;

thickness of the asphalt layer: the thickness of the thermoplastic elastomer layer is 5: 2.

comparative example 2

Preparation of asphalt coating material: according to the mass ratio of 10: 1, weighing 70# road petroleum asphalt and naphthenic oil, heating the 70# road petroleum asphalt to 180 ℃ until the 70# road petroleum asphalt is completely melted, adding the naphthenic oil while the mixture is hot, stirring and mixing the mixture for 60min at the rotating speed of 200r/min by using a stirrer, and preserving heat to obtain an asphalt coating material;

preparation of silica aerogel: mixing tetraethoxysilane and water, hydrolyzing, forming sheet-shaped gel in a mold, soaking the gel in an ethanol/water mixture of original sol, standing and aging for 48 hours at the temperature of 45 ℃, adding trimethyl fluorosilane with the mass of 5% of that of the gel in the aging process, taking out the gel after the aging is finished, and drying to constant weight at the temperature of 85 ℃ to obtain silicon dioxide aerogel;

preparing a waterproof coiled material product:

preparing a polyester tire base layer;

coating a structural adhesive on the surface of a polyester tire substrate, and arranging silica aerogel on the surface of the structural adhesive to form a silica aerogel layer;

adding a flame retardant accounting for 3% of the mass of the asphalt coating material into the heat-insulating asphalt coating material, stirring and mixing the mixture for 10min at the rotating speed of 300r/min by using a stirrer, coating the mixture on the surface of the silica aerogel layer to form an asphalt layer, and arranging a layer of silica aerogel layer on the surface of the asphalt layer while the mixture is hot when the asphalt coating material is cooled to 60 ℃ to form a silica aerogel layer; obtaining the product;

the flame retardant is decabromodiphenylethane;

thickness of silica aerogel layer: the thickness of the asphalt layer is 1: 5.

the products obtained in examples 1-5 and comparative examples 1-2 were tested for their performance, and the specific test methods and test results are as follows:

and (3) testing the fire resistance:

respectively cutting out samples with the length of 10cm and the width of 5cm of each example and each comparative example, placing the samples on flame with the temperature of 200 ℃ for continuous baking for 100s, and observing whether the asphalt layer has softening, dripping and other phenomena, wherein the specific test results are shown in table 1;

and (3) flame retardant test:

measuring the oxygen index of a product sample according to an NB-SH-T0815-2010 asphalt combustion performance measurement oxygen index method, wherein the specific test result is shown in Table 1;

table 1: product performance test results

	Fire resistance	Oxygen index/%
			Example 1	Not softened and dropped	38
Example 2	Not softened and dropped	39
			Example 3	Not softened and dropped	39
Example 4	Not softened and dropped	35
			Example 5	Not softened and dropped	34
Comparative example 1	Obvious dripping	26
			Comparative example 2	Slightly soften	28

As can be seen from the test results in Table 1, the product obtained by the invention can not be softened and dripped for a long time at high temperature when being heated, and has excellent flame retardant property.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.