Environment-friendly modified asphalt waterproof coiled material and production process thereof

Abstract

The invention discloses an environment-friendly modified asphalt waterproof coiled material and a production process thereof, and belongs to the technical field of waterproof coiled materials, the environment-friendly modified asphalt waterproof coiled material comprises an isolating membrane layer, a mineral aggregate layer, a modified asphalt layer, a jute base layer and a polyester base layer, and the environment-friendly modified asphalt waterproof coiled material is characterized in that the isolating membrane layer, the mineral aggregate layer, the jute base layer and the polyester base layer are sequentially arranged from top to bottom; the modified asphalt layers are located on the two sides of the jute base layer. The waterproof coiled material disclosed by the invention has a stronger waterproof barrier effect and can effectively prevent moisture permeation and prolong the service life of a building. The modified asphalt layer is treated by a special modification formula and a pulsed electric field, so that a network structure between asphalt and a polymer is tighter, and the tensile strength and the aging resistance of the modified asphalt layer are enhanced. Through hot-pressing compounding and cooling shaping processes, the mechanical property of the finished coiled material is further improved, and the durability and compressive strength are also enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waterproof materials, more specifically, to an environmentally friendly modified asphalt waterproof roll and its production process. BACKGROUND

[0002] Waterproof materials are crucial in the construction industry, especially in projects that require waterproofing such as roofing, underground structures, and tunnels. Traditional waterproof materials, such as asphalt waterproof rolls, are widely used in the construction field, but they still have certain limitations in terms of performance, environmental friendliness, and cost. Although traditional asphalt waterproof rolls have good waterproofing effects, their performance in terms of aging resistance, high-temperature resistance, and tensile strength is poor. In particular, they have a short service life and are prone to cracking and deformation when exposed to high temperatures, ultraviolet light, and environmental pollution, leading to a decrease in waterproofing performance.

[0003] In recent years, as the construction industry's requirements for material performance continue to increase and environmental awareness strengthens, environmentally friendly and superior performance waterproof materials have gradually become a hot topic in the market. In order to improve the performance of traditional asphalt waterproof materials, researchers have been working to develop more efficient and environmentally friendly modified asphalt waterproof rolls. These new waterproof materials not only need to meet basic requirements such as high strength, strong waterproofing, and aging resistance, but also need to consider environmental issues during production to minimize environmental impact.

[0004] Through existing literature retrieval, it was found that Chinese patent publication number CN111703145A, published on September 25, 2020, discloses an environmentally friendly odor-free modified asphalt waterproof roll and its preparation method, which includes modified asphalt, polypropylene fabric, and PE film. The modified asphalt is composed of the following raw materials in weight fractions: asphalt 38-42 parts, waste rubber powder 18-22 parts, high molecular polymer 15-20 parts, antioxidant 0.5-1 part, odor suppressant 0.5-0.8 part, surfactant 0.3-0.6 part, and filler 10-15 parts. This invention uses waste rubber powder to produce waterproof rolls, and reduces the preparation temperature of modified asphalt through surfactants to reduce the aging of asphalt performance; Chinese patent publication number CN108822734A, published on November 16, 2018, discloses a preparation method for a high-temperature and ultra-low-temperature resistant SBS modified asphalt waterproof roll. After activating and modifying the waste rubber powder, it is added as an auxiliary modifier to the raw materials. Not only does it compensate for the shortcomings of single use of SBS elastomer modification, but also the surface of the rubber powder is more rough after plasma treatment, and the etching phenomenon is serious, which is beneficial to improving the performance of rubber powder modified asphalt and enhancing the bonding performance of rubber powder and asphalt. Although the above-mentioned comparative documents can improve the performance of modified asphalt, the production process is complicated, the energy consumption is large, and it is not environmentally friendly, with weak tensile strength and aging resistance. SUMMARY

[0005] 1. Technical problem to be solved

[0006] In view of the problems in the prior art, the present application aims to provide an environment-friendly modified asphalt waterproofing membrane and a production process thereof, which has simple production process, small energy consumption, is environment-friendly and non-polluting, and has high tensile strength and aging resistance.

[0007] 2. Technical solution

[0008] To solve the above problems, the present application adopts the following technical solution.

[0009] An environment-friendly modified asphalt waterproofing membrane comprises an isolation film layer, a mineral particle layer, a modified asphalt layer, a jute cloth base layer and a polyester base layer, wherein the isolation film layer, the mineral particle layer, the jute cloth base layer and the polyester base layer are arranged in sequence from top to bottom, and the modified asphalt layer is located on both sides of the jute cloth base layer.

[0010] The modified asphalt layer is composed of the following raw materials in parts by weight:

[0011] 150-170 parts of base asphalt, 35-45 parts of high-density polyethylene, 30-40 parts of SBS, 10-12 parts of softening aid, 25-30 parts of waste rubber powder, 22-24 parts of fly ash, 5-13 parts of butadiene-styrene rubber, 2-3 parts of antioxidant, 3-7 parts of modifier and 3-6 parts of interfacial active agent.

[0012] Further, the modified asphalt layer is composed of the following raw materials in parts by weight: 160 parts of base asphalt, 40 parts of high-density polyethylene, 35 parts of SBS, 11 parts of softening aid, 27 parts of waste rubber powder, 23 parts of fly ash, 9 parts of butadiene-styrene rubber, 2.5 parts of antioxidant, 5 parts of modifier and 4.5 parts of interfacial active agent.

[0013] As a preferred embodiment, the preparation method of the modified asphalt layer is as follows:

[0014] 1) 150-170 parts of base asphalt are heated to a molten state, 35-45 parts of high-density polyethylene powder or particles are added to the molten asphalt, and a magnetic stirrer is used for sufficient stirring to ensure uniform dispersion of the high-density polyethylene in the asphalt;

[0015] 2) the treatment liquid Q is obtained by treating for 15-20 s using a pulse electric field with a frequency of 15-18 Hz and an electric field strength of 1.6-2.0 kV / cm, and the treatment liquid Q is added to 30-40 parts of SBS for continued stirring until the SBS is completely dissolved and uniformly dispersed, and 10-12 parts of softening aid is added to the mixture for continued heating and stirring to ensure uniform distribution of the softening aid;

[0016] 3) 25-30 parts of waste rubber powder is added into the mixture in the stirring tank, 22-24 parts of fly ash is added into the mixture and stirred until the fly ash is completely dispersed, and then pumped into a colloid mill for grinding and then mixed again in the stirring tank to obtain a mixture S;

[0017] 4) The mixture S and other raw materials are stirred together, cooled to room temperature, and a stable modified asphalt layer is formed.

[0018] The production process of the environment-friendly modified asphalt waterproof roll material comprises the following steps:

[0019] 1) The base asphalt is placed in a heating kettle and melted at 160-180°C, and HDPE, SBS and softening aids are added under constant temperature conditions using a magnetic stirrer; continuous stirring is carried out for 30 minutes to promote uniform melting of the polymers and the formation of a network structure with the asphalt;

[0020] 2) The waste rubber powder, styrene-butadiene rubber and modifier are slowly added to the homogeneous system; the pulse electric field treatment device is started, and the parameters are set as follows: electric field strength 5-10 kV / cm, pulse frequency 1-2 kHz, and continuous treatment for 15 minutes;

[0021] 3) Under temperature control, fly ash, surfactant and antioxidant are added, and ultrasonic wave and medium wave ultraviolet lamp are used for 15-20 minutes of treatment;

[0022] 4) The modified material is sent into a double-screw extruder for melt mixing under step-by-step temperature control; homogeneous material is formed through shearing, compression and extrusion, and the material strip is cooled and then cut into particles for standby use;

[0023] 5) The extruded particles are heated to 150°C in a vacuum and reduced pressure kettle, and treated for 30 minutes under negative pressure environment;

[0024] 6) The modified asphalt is melted and coated on both sides of the polyester tire base and the jute tire base; the surface is sequentially laid with a mineral particle layer and a separation film layer, and after hot pressing and compounding, cooling and shaping, cutting and shaping, the finished product roll material is obtained.

[0025] Further, the ultrasonic wave parameters in step 3) are 20 kHz and 600 W, and the wavelength of the medium wave ultraviolet lamp is 280-320 nm.

[0026] Further, the first section temperature in step 4) is 170°C, and the second section temperature is 200°C.

[0027] Further, the pressure in step 5) is -0.08 to -0.1 MPa.

[0028] 3. Beneficial effects

[0029] Compared with the prior art, the present application has the advantages of:

[0030] 1) The modified asphalt layer uses a special formula, including base asphalt, high-density polyethylene, SBS, waste rubber powder, etc. After pulse electric field treatment and special mixing process, the water permeability resistance is significantly enhanced. The waterproofing membrane has stronger waterproof barrier effect, which can effectively prevent water penetration and prolong the service life of the building.

[0031] 2) The modified asphalt layer is treated by special modification formula and pulse electric field, which makes the network structure between asphalt and polymer more compact, enhances the tensile strength and aging resistance. Through hot pressing and cooling forming process, the mechanical properties of the finished product are further improved, and the durability and compressive strength are also enhanced.

[0032] 3) Using waste rubber powder and fly ash as important components of modified asphalt can reduce the cost of raw materials. At the same time, through the optimization of production process, such as pulse electric field treatment and ultrasonic ultraviolet lamp synergistic effect, not only the performance of modified asphalt is improved, but also the energy consumption and material waste in the production process are effectively reduced, thereby further reducing the production cost.

[0033] 4) Through the melting and mixing of double screw extruder and negative pressure treatment, the physical properties of the modified asphalt layer are optimized, and the material is easier to process and form, which is convenient for application in actual construction. The finished product has smooth surface and is suitable for large-scale construction, reducing the defects that may occur in the construction process.

[0034] 5) The waterproofing membrane of the present application has heat resistance of 202-204℃, ≤2mm, no flow, no drop, low temperature flexibility of -42-45℃, no crack, peel strength of 3.2-3.5N / mm, impermeability of 0.8-1.2Mpa, 130-140min; no crack in hot aging low temperature flexibility of -35-37℃. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described below; obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0036] Example 1:

[0037] The application discloses an environment-friendly modified asphalt waterproof coiled material, which comprises a separation film layer, a mineral particle layer, a modified asphalt layer, a jute cloth base layer and a polyester base layer, wherein the separation film layer, the mineral particle layer, the jute cloth base layer and the polyester base layer are sequentially arranged from top to bottom, and the modified asphalt layer is arranged on both sides of the jute cloth base layer; the modified asphalt layer is prepared from the following raw materials in parts by weight: 150 parts of base asphalt, 35 parts of high-density polyethylene, 30 parts of SBS, 10 parts of a softening aid, 25 parts of waste rubber powder, 22 parts of fly ash, 5 parts of butadiene styrene rubber, 2 parts of an antioxidant, 3 parts of a modifier and 3 parts of an interfacial active agent.

[0038] The preparation method of the modified asphalt layer is as follows:

[0039] 1) 150 parts of base asphalt are heated to a molten state, 35 parts of high-density polyethylene powder or particles are added into the molten asphalt, and a magnetic stirrer is used for fully stirring to ensure that the high-density polyethylene is uniformly dispersed in the asphalt;

[0040] 2) the treatment liquid Q is obtained by adopting pulse electric field treatment for 15 seconds at a frequency of 15 Hz and an electric field intensity of 1.6 kV / cm, the treatment liquid Q is added into 30 parts of SBS, and the SBS is continuously stirred until the SBS is completely dissolved and uniformly dispersed, 10 parts of a softening aid is added into the mixture and continuously heated and stirred to ensure that the softening aid is uniformly distributed;

[0041] 3) 25 parts of waste rubber powder is added into the mixture and placed in a stirring tank, 22 parts of fly ash is added into the mixture and stirred until the fly ash is completely dispersed, and the mixture is pumped into a colloid mill for grinding after stirring for 15 minutes and then mixed again in the stirring tank, so as to obtain the mixture S;

[0042] 4) the mixture S and other raw materials are stirred and uniformly mixed, and cooled to room temperature to form a stable modified asphalt layer.

[0043] The production process of the environment-friendly modified asphalt waterproof coiled material comprises the following steps:

[0044] 1) the base asphalt is placed into a heating kettle and melted at 160 DEG C, and the HDPE, the SBS and the softening aid are added into the kettle under the condition of constant temperature by using a magnetic stirrer; the stirring is continuously conducted for 30 minutes, so as to promote the polymer to be uniformly melted and to form a network structure with the asphalt;

[0045] 2) the waste rubber powder, the butadiene styrene rubber and the modifier are slowly added into the homogeneous system; the pulse electric field treatment device is started, and the parameters are set as follows: the electric field intensity is 5 kV / cm, and the pulse frequency is 1 kHz; the treatment is continuously conducted for 15 minutes;

[0046] 3) under the condition of temperature control, the fly ash, the interfacial active agent and the antioxidant are added, and the ultrasonic wave and the middle wave ultraviolet lamp are used for 15 minutes of treatment in a cooperative manner; the ultrasonic wave parameters are 20 kHz and 600 W, and the middle wave ultraviolet lamp wavelength is 280 nm.

[0047] 4) The modified material is fed into a twin-screw extruder and melt-mixed under stepwise temperature control; homogenized material is formed by shearing, compression and extrusion, and the material strip is cooled and cut into particles for standby use; the first-stage temperature is 170°C and the second-stage temperature is 200°C.

[0048] 5) The extruded material particles are heated to 150°C in a vacuum decompression kettle and treated for 30 minutes under a negative pressure of -0.08 MPa;

[0049] 6) The modified asphalt is melted and coated on both sides of the polyester base and the jute base; the surface is sequentially laid with a mineral particle layer and an isolation film layer, and after hot pressing and compounding, cooling and setting, cutting and forming, a finished product roll is obtained.

[0050] Example 2

[0051] An environmentally friendly modified asphalt waterproofing roll material includes an isolation film layer, a mineral particle layer, a modified asphalt layer, a jute base layer, and a polyester base layer, which are arranged in order from top to bottom, and the modified asphalt layer is located on both sides of the jute base layer; the modified asphalt layer is composed of the following raw materials by weight: 160 parts of base asphalt, 40 parts of high-density polyethylene, 35 parts of SBS, 11 parts of softening aid, 27 parts of waste rubber powder, 23 parts of fly ash, 9 parts of styrene-butadiene rubber, 2.5 parts of antioxidant, 5 parts of modifier, and 4.5 parts of interfacial active agent.

[0052] The preparation method of the modified asphalt layer is as follows:

[0053] 1) 160 parts of base asphalt are heated to a molten state, 40 parts of high-density polyethylene powder or particles are added to the molten asphalt, and a magnetic stirrer is used for sufficient stirring to ensure uniform dispersion of the high-density polyethylene in the asphalt;

[0054] 2) The treated liquid Q is obtained by pulse electric field treatment for 18 seconds at a frequency of 16 Hz and an electric field strength of 1.8 kV / cm, the treated liquid Q is added to 35 parts of SBS for continued stirring until the SBS is completely dissolved and uniformly dispersed, and 11 parts of softening aid is added to the mixture for continued heating and stirring to ensure uniform distribution of the softening aid;

[0055] 3) 28 parts of waste rubber powder is added to the mixture in the stirring tank, 23 parts of fly ash is added to the mixture for stirring until the fly ash is completely dispersed, and after stirring for 17 minutes, it is pumped to a colloid mill for grinding and then mixed again in the stirring tank to obtain a mixture S;

[0056] 4) The mixture S and other raw materials are stirred and mixed uniformly, cooled to room temperature, and a stable modified asphalt layer is formed.

[0057] The production process of the environmentally friendly modified asphalt waterproofing roll material includes the following steps:

[0058] 1) Put the base asphalt into a heating kettle, melt at 170℃, add HDPE, SBS and softening aids under constant temperature conditions with a magnetic stirrer; continue stirring for 30 minutes to promote uniform melting of the polymer and initial network formation with the asphalt;

[0059] 2) Slowly add the waste rubber powder, styrene-butadiene rubber, and modifier to the homogeneous system; start the pulse electric field treatment device, with parameters set at an electric field strength of 8 kV / cm and a pulse frequency of 1 kHz, and continue for 15 minutes;

[0060] 3) Under temperature control, add fly ash, surfactant, and antioxidant, and use ultrasonic waves and medium-wave ultraviolet lamps in cooperation for 18 minutes of treatment; the ultrasonic wave parameters are 20 kHz and 600 W, and the medium-wave ultraviolet lamp wavelength is 300 nm.

[0061] 4) Put the modified material into a double-screw extruder for melt mixing under step-by-step temperature control; form a homogeneous material through shearing, compression, and extrusion, cut the material strip after cooling, and prepare for use; the first-stage temperature is 170℃, and the second-stage temperature is 200℃.

[0062] 5) Heat the extruded material particles to 150℃ in a vacuum and reduced-pressure kettle, and treat them under a negative pressure of -0.08 to -0.1 MPa for 30 minutes;

[0063] 6) After melting the modified asphalt, coat it on both sides of the polyester base and the jute base; lay the mineral aggregate layer and the separation film layer on the surface in turn, hot-press the composite, cool and shape it, cut it into shape, and obtain the finished roll material.

[0064] Example 3

[0065] An environmentally friendly modified asphalt waterproof roll material includes a separation film layer, a mineral aggregate layer, a modified asphalt layer, a jute base layer, and a polyester base layer, which are arranged in order from top to bottom, and the modified asphalt layer is located on both sides of the jute base layer; the modified asphalt layer is composed of the following raw materials in parts by weight: base asphalt 170 parts, high-density polyethylene 45 parts, SBS 40 parts, softening aids 12 parts, waste rubber powder 30 parts, fly ash 24 parts, styrene-butadiene rubber 13 parts, antioxidant 3 parts, modifier 7 parts, and surfactant 6 parts.

[0066] The preparation method of the modified asphalt layer is as follows:

[0067] 1) Heat 170 parts of base asphalt to its molten state, add 45 parts of high-density polyethylene powder or particles to the molten asphalt, and use a magnetic stirrer to stir thoroughly to ensure uniform dispersion of the high-density polyethylene in the asphalt;

[0068] 2) using pulse electric field with frequency of 18 Hz and electric field strength of 2.0 kV / cm to treat for 20 s to obtain a treatment liquid Q, adding the treatment liquid Q into 40 parts of SBS to continue stirring until the SBS is completely dissolved and uniformly dispersed, adding 12 parts of a softening aid into the mixture to continue heating and stirring to ensure that the softening aid is uniformly distributed;

[0069] 3) adding 30 parts of waste rubber powder into the mixture in a stirring tank, adding 24 parts of fly ash into the mixture to stir until the fly ash is completely dispersed, pumping into a colloid mill to grind and then mixing again in the stirring tank to obtain a mixture S;

[0070] 4) stirring and uniformly mixing the mixture S and other raw materials, and cooling to room temperature to form a stable modified asphalt layer.

[0071] The production process of the environment-friendly modified asphalt waterproof roll material includes the following steps:

[0072] 1) melting the base asphalt in a heating kettle at 180℃, and adding HDPE, SBS and a softening aid under constant temperature conditions using a magnetic stirrer; continuously stirring for 30 minutes to promote the uniform melting of the polymers and the initial formation of a network structure with the asphalt;

[0073] 2) slowly adding waste rubber powder, styrene-butadiene rubber and a modifier into the homogeneous system; starting a pulse electric field treatment device with parameters set as electric field strength of 10 kV / cm and pulse frequency of 2 kHz, and continuously treating for 15 minutes;

[0074] 3) adding fly ash, an interfacial active agent and an antioxidant under temperature control, and treating for 20 minutes using the synergistic effect of ultrasonic waves and a medium wave ultraviolet lamp; the ultrasonic wave parameters are 20 kHz and 600 W, and the wavelength of the medium wave ultraviolet lamp is 320 nm.

[0075] 4) feeding the modified material into a double-screw extruder to perform melt mixing under step-by-step temperature control; forming a homogeneous material through shearing, compression and extrusion, cutting the material strip after cooling, and reserving for use; the first section temperature is 170℃, and the second section temperature is 200℃.

[0076] 5) heating the extruded material particles to 150℃ in a vacuum and reduced pressure kettle, and treating for 30 minutes under a negative pressure of -0.1 MPa;

[0077] 6) coating the modified asphalt on both sides of a polyester tire base and a jute cloth tire base after melting; sequentially laying a mineral particle layer and an isolation film layer on the surface layer, hot pressing and compounding, cooling and setting, cutting and forming to obtain a finished roll material.

[0078] Experimental example

[0079] With CN111703145A as a comparative file 1, and CN108822734A as a comparative file 2, the following comparative experiments are made, and the typical detection values of the waterproofing membrane are shown in the following table

[0080]

[0081]

[0082] As shown in Table 1, the waterproofing membrane of the present application has heat resistance of 202-204℃, ≤2mm, no flow, no dripping, low temperature flexibility of no cracks at-42 to-45℃, peel strength of 3.2-3.5N / mm, impermeability of 0.8-1.2Mpa, and 130-140min; heat aging low temperature flexibility of no cracks at-35 to-37℃, the detection methods are GB / T328-2007 and GB18242-2008, and the detected indexes all meet and are higher than the standard requirements of GB18242-2008.

[0083] The above description is only a preferred embodiment of the present application; however, the protection scope of the present application is not limited thereto. Any skilled person in the art, according to the technical solution and the improvement concept of the present application, can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An environmentally friendly modified bitumen waterproof membrane, comprising a release membrane layer, a mineral granule layer, a modified bitumen layer, a jute fabric base layer, and a polyester base layer, characterized in that: The isolation membrane layer, mineral granule layer, jute cloth base layer, and polyester base layer are arranged in sequence from top to bottom, and the modified asphalt layer is located on both sides of the jute cloth base layer; The modified asphalt layer is composed of the following raw materials in parts by weight: The composition includes 150-170 parts base asphalt, 35-45 parts high-density polyethylene, 30-40 parts SBS, 10-12 parts softening agent, 25-30 parts waste rubber powder, 22-24 parts fly ash, 5-13 parts styrene-butadiene rubber, 2-3 parts antioxidant, 3-7 parts modifier, and 3-6 parts surfactant.

2. The environmentally friendly modified bitumen waterproof membrane according to claim 1, characterized in that: The modified asphalt layer is composed of the following raw materials in parts by weight: 160 parts base asphalt, 40 parts high-density polyethylene, 35 parts SBS, 11 parts softening agent, 27 parts waste rubber powder, 23 parts fly ash, 9 parts styrene-butadiene rubber, 2.5 parts antioxidant, 5 parts modifier, and 4.5 parts surfactant.

3. The environmentally friendly modified bitumen waterproof membrane according to claim 1, characterized in that... The method for preparing the modified asphalt layer is as follows: 1) Heat 150-170 parts of base asphalt to its molten state, add 35-45 parts of high-density polyethylene powder or granules to the molten asphalt, and use a magnetic stirrer to stir thoroughly to ensure that the high-density polyethylene is evenly dispersed in the asphalt. 2) Treat the mixture with a pulsed electric field with a frequency of 15-18Hz and an electric field strength of 1.6-2.0kV / cm for 15-20s to obtain treatment solution Q. Add 30-40 parts of SBS to treatment solution Q and continue stirring until the SBS is completely dissolved and uniformly dispersed. Add 10-12 parts of softening aid to the mixture and continue heating and stirring to ensure that the softening aid is uniformly distributed. 3) Add 25-30 parts of waste rubber powder to the mixture and place it in a mixing tank. Add 22-24 parts of fly ash to the mixture and stir until the fly ash is completely dispersed. After stirring for 15-20 minutes, pump it to a colloid mill for grinding and then send it back to the mixing tank for mixing to obtain mixture S. 4) Mix the mixture S with other raw materials until homogeneous, cool to room temperature, and form a stable modified asphalt layer.

4. The environmentally friendly modified bitumen waterproof membrane and its production process according to claim 1, characterized in that... Includes the following steps: 1) Place the base asphalt into a heating kettle and melt it at 160-180℃. Use a magnetic stirrer to add HDPE, SBS and softening additives under constant temperature conditions. Continue stirring for 30 minutes to promote uniform melting of the polymer and initial formation of a network structure with the asphalt; 2) Slowly add waste rubber powder, styrene-butadiene rubber, and modifier to the homogeneous system; start the pulse electric field treatment device, set the parameters to electric field strength of 5-10 kV / cm, pulse frequency of 1-2 kHz, and continue treatment for 15 minutes. 3) Under temperature control, add fly ash, surfactant and antioxidant, and treat for 15 to 20 minutes using the combined action of ultrasound and medium-wave ultraviolet lamp; 4) The modified material is fed into a twin-screw extruder and melt-mixed under controlled temperature. Homogeneous material is formed through shearing, compression and extrusion. The strip is cooled and then pelletized for later use. 5) Heat the extruded granules to 150°C in a vacuum decompression reactor and process them under negative pressure for 30 minutes; 6) After the modified bitumen is melted, it is coated on both sides of the polyester base and the jute base; the surface layer is laid with mineral granules and the release film layer in sequence, and after hot pressing and cooling, it is cut into shape to obtain the finished roll material.

5. The production process of an environmentally friendly modified bitumen waterproof membrane according to claim 1, characterized in that: In step 3), the ultrasonic parameters are 20kHz and 600W, and the wavelength of the medium-wave ultraviolet lamp is 280-320nm.

6. The environmentally friendly modified bitumen waterproof membrane and its production process according to claim 1, characterized in that: In step 4), the temperature of the first segment is 170℃ and the temperature of the second segment is 200℃.

7. The environmentally friendly modified bitumen waterproof membrane and its production process according to claim 1, characterized in that: The pressure in step 5) is -0.08 to -0.1 MPa.

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