Dip-coating method and dip-coating device for waterproof roll

Abstract

The invention discloses a dip-coating method and dip-coating device for a waterproof roll, and belongs to the technical field of waterproof rolls. The method comprises the following steps: S101, storing asphalt in an asphalt storage tank, wherein the storage temperature is 105-120 DEG C; s102, the asphalt is homogenized at the temperature of 158 DEG C to 162 DEG C; s103, the homogenized asphalt is filtered, the filtering pressure ranges from 0.4 Mpa to 0.6 Mpa, and the filtering precision ranges from 400 meshes to 650 meshes; s104, sending the filtered substance to a first blending tank and a second blending tank, and sending the filtered substance to the second blending tank; s105, blending is performed in a first blending tank, and the discharging temperature of the first blending tank is controlled to be 178-182 DEG C; blending in a second blending tank, and controlling the discharging temperature of the second blending tank to be 180-185 DEG C; and S106, the asphalt composition in the second blending tank is conveyed to a pre-impregnation structure, and the asphalt composition in the first blending tank is conveyed to a coating structure.

Description

Technical Field

[0001] The invention belongs to the technical field of waterproof coiled materials, and particularly relates to a dipping coating method and a dipping coating device for waterproof coiled materials. Background Art

[0002] Waterproofing membrane is a commonly used building material in construction. In the construction of roads, bridges, roofs or buildings that need waterproofing, waterproofing membranes need to be laid in advance. According to its main waterproofing components, it can be divided into three categories: asphalt waterproofing materials, polymer modified waterproofing membranes and synthetic polymer waterproofing membranes. Among them, asphalt waterproofing membranes are the most commonly used waterproofing membranes, accounting for about 70% of the total market. This kind of membrane is a rollable sheet waterproofing material made by dipping asphalt on the base and then spreading powdered or sheet-like isolation materials on the surface.

[0003] For example, the patent with application number CN202221235813.5 discloses a dipping device capable of producing a variety of tire asphalt coils, including a prepreg structure, a drying structure and a coating structure arranged in sequence from front to back, the prepreg structure including a prepreg tank, a first feed roller above the front of the prepreg tank and a first extrusion pair of rollers above the rear of the prepreg tank, the coating structure including a coating tank, a second feed roller above the front of the coating tank and a second extrusion pair of rollers above the rear of the coating tank, the tire base cloth bypasses the first extrusion pair of rollers in an S shape and passes through the gap between the second extrusion pair of rollers in the front-to-back direction; the prepreg structure also includes two first large immersion rollers arranged side by side front and back and a prepreg roller between the two first large immersion rollers and capable of adjusting its position up and down; the two first large immersion rollers are located between the first feed roller and the first extrusion pair of rollers and their lower parts are immersed in asphalt, the lower side of the prepreg roller is lower than that of the first large immersion roller The upper side is low and it can move downward to be immersed in the asphalt, and the tire base cloth sequentially bypasses the upper side of the first feed roller, the upper side of the first large immersion roller in front, the lower side of the prepreg roller and the upper side of the first large immersion roller in the rear; the coating structure also includes a front coating roller, an active roller, a rear coating roller and a second large immersion roller arranged in sequence from front to back; the front coating roller is located behind the second feed roller, it is lower than the second feed roller and the active roller, it can adjust its position up and down, and it can move downward to be immersed in the asphalt; the active roller is located above the asphalt; the rear coating roller can adjust its position up and down, and it is immersed in the asphalt; the second large immersion roller is located in front of the second extrusion roller, and its lower part is immersed in the asphalt; the tire base cloth sequentially bypasses the upper side of the second feed roller, the lower side of the front coating roller, the upper side of the active roller, the lower side of the rear coating roller and the upper side of the second large immersion roller, and then moves horizontally backward to the second extrusion pair of rollers.

[0004] The applicant found that asphalt contains 0.2-0.5% ash, and the presence of ash will affect the product's viscosity and anti-aging properties. However, specific fillers need to be added to asphalt to improve tear strength and peel strength. Summary of the invention

[0005] In order to solve the above problems, the embodiment of the present invention provides a dipping method and a dipping device for waterproof coiled material, which filters asphalt by a special method, mixes the filtrate and the filtrate as asphalt with high ash content (complex ash composition) to directly contact the tire base, and uses the filtrate as asphalt with low ash content as the surface layer, thus turning waste into treasure. The technical solution is as follows: On the one hand, an embodiment of the present invention provides a dipping method for a waterproof coiled material, the method comprising: S101: Asphalt is stored in an asphalt storage tank and evaporated water is collected. The storage temperature is 105-120°C.

[0006] S102: homogenizing the asphalt at 158-162°C.

[0007] S103: Filter the homogenized asphalt at a filtration pressure of 0.4-0.6Mpa and a filtration accuracy of 20-50μm.

[0008] S104: Send the filtered material to the first blending tank and the second blending tank, and send the filtered material to the second blending tank.

[0009] S105: Mixing is performed in the first mixing tank, and the discharge temperature of the first mixing tank is controlled to be 178-182°C; mixing is performed in the second mixing tank, and the discharge temperature of the second mixing tank is controlled to be 180-185°C. In the second mixing tank, the volume ratio of the filtrate to the filtrate is 3-6:1.

[0010] S106: delivering the asphalt composition in the second mixing tank to the prepreg structure, and delivering the asphalt composition in the first mixing tank to the coating structure.

[0011] Among them, the asphalt in the embodiment of the present invention is petroleum asphalt with a needle penetration of 100-350; antioxidant, SBS, filler and cyclohexane oil are added to the first mixing tank; antioxidant, SBS, filler and cyclohexane oil are added to the second mixing tank; the filler is talcum powder, and the antioxidant is selected from antioxidant 4010 or antioxidant 697; the tire base 4 is a polyester tire with a gram weight of 150-250g / ㎡ and a thickness of 0.9-1.1mm.

[0012] Specifically, in the second blending tank, the weight ratio of each raw material is: 60-80 parts of asphalt, 7-15 parts of SBS, 8-18 parts of cyclohexane oil, 18-24 parts of filler and 0.5-2.0 parts of antioxidant; in the first blending tank, the weight ratio of each raw material is: 65-80 parts of asphalt, 8-14 parts of SBS, 8-15 parts of cyclohexane oil, 20-25 parts of filler and 0.8-2.2 parts of antioxidant.

[0013] Among them, the asphalt composition of the second mixing tank is delivered to the prepreg tank 11 of the prepreg structure, and the asphalt composition of the first mixing tank is delivered to the coating tank 31 and the asphalt dripping pipe 34 of the coating structure; in the prepreg structure, the residence time of the tire base 4 in the prepreg tank 11 is 3-7S, and the extrusion pressure of the first extrusion roller 13 is 0.35-0.45Mpa; in the coating structure, the residence time of the tire base 4 in the coating tank 31 is 4-9S, and the extrusion pressure of the second extrusion roller 33 is 0.30-0.38Mpa.

[0014] Specifically, in S103, a laminated filter is used for filtering, the material of the filter laminate is carbon steel, and the working pressure is 1.0 MPa.

[0015] Specifically, in S105, stirring is first performed at a low temperature, and the temperature is gradually raised to the discharge temperature, and the raw materials are added in the order and ratio during the heating process.

[0016] Preferably, the dipping method of the waterproof coiled material provided by the embodiment of the present invention comprises: S101: Asphalt is stored in an asphalt storage tank and evaporated water is collected. The storage temperature is 105-120°C.

[0017] S102: homogenizing the asphalt at 158-162°C.

[0018] S103: The homogenized asphalt is filtered using a laminated filter with a filtration pressure of 0.4-0.6Mpa; the material of the filter laminated filter is carbon steel, the working pressure is 1.0Mpa, and the filtration accuracy is 20-50μm.

[0019] S104: Send the filtered material to the first blending tank and the second blending tank, and send the filtered material to the second blending tank.

[0020] S105: adding antioxidant, SBS, filler and cyclohexane oil in proportion to the first blending tank, and controlling the discharge temperature of the first blending tank to be 178-182°C; adding antioxidant, SBS, filler and cyclohexane oil in proportion to the second blending tank, and controlling the discharge temperature of the second blending tank to be 180-185°C. In the second blending tank, the volume ratio of the filtrate to the filtrate is 3-6:1.

[0021] Among them, in the second blending tank, the weight ratio of each raw material is: 60-80 parts of asphalt, 7-15 parts of SBS, 8-18 parts of naphthenic oil, 18-24 parts of filler and 0.5-2.0 parts of antioxidant; in the first blending tank, the weight ratio of each raw material is: 65-80 parts of asphalt, 8-14 parts of SBS, 8-15 parts of naphthenic oil, 20-25 parts of filler and 0.8-2.2 parts of antioxidant; S106: The asphalt composition of the second mixing tank is delivered to the prepreg tank 11 of the prepreg structure. In the prepreg structure, the residence time of the tire base 4 in the prepreg tank 11 is 3-7S, and the extrusion pressure of the first extrusion roller pair 13 is 0.35-0.45Mpa; the asphalt composition of the first mixing tank is delivered to the coating tank 31 and the asphalt dripping pipe 34 of the coating structure. In the coating structure, the residence time of the tire base 4 in the coating tank 31 is 4-9S, and the extrusion pressure of the second extrusion roller pair 33 is 0.30-0.38Mpa.

[0022] On the other hand, an embodiment of the present invention further provides a dipping device for waterproof coiled materials, comprising an asphalt supply structure and a prepreg structure 1, a drying structure 2 and a coating structure 3 arranged in sequence from front to back, the prepreg structure 1 comprising a prepreg tank 11, at least one immersion roller 12 in the prepreg tank 11 and a first extrusion pair of rollers 13 above and behind the prepreg tank 11, the coating structure 3 comprising a coating tank 31, at least one coating roller 32 in the coating tank 31, a second extrusion pair of rollers 33 above and behind the coating tank 31, and an asphalt dripping pipe 34 located between the coating roller 32 and the second extrusion pair of rollers 33 and directly above the middle of the tire base 4, the asphalt supply structure comprising an asphalt storage tank, a first mixing tank and a second mixing tank, the first mixing tank being connected to the coating tank 31 and the asphalt dripping pipe 34 via a pipeline with a second delivery pump, and the second mixing tank being connected to the coating tank 31 and the asphalt dripping pipe 34 via a pipeline with a third delivery pump The pipeline is connected to the prepreg tank 11; the asphalt supply structure also includes a homogenizer, a heat exchanger, a homogenizing pump, a filtering pump, a filter and a filtrate storage tank. The asphalt storage tank is connected to the feed port of the homogenizer through a pipeline with a fourth delivery pump, and the discharge port of the homogenizer is connected to the inlet of the homogenizing pump through a pipeline; the outlet of the homogenizing pump is divided into two outputs, one is connected to the feed port of the filter through a pipeline with a filtering pump, and the other is connected to the feed port of the homogenizer through a pipeline with a heat exchanger; the filtrate outlet of the filter is connected to the filtrate storage tank through a pipeline, the filtrate outlet of the filter is connected to the second blending tank through a pipeline, and the filtrate storage tank is connected to the inlet of the first delivery pump through a pipeline; the outlet of the first delivery pump is divided into two outputs, one is connected to the first blending tank through a pipeline, and the other is connected to the second blending tank through a pipeline.

[0023] Among them, the filter in the embodiment of the present invention is a laminated filter, the material of its filter laminate is carbon steel, its working pressure is 1.0Mpa, and the materials output from its filtrate outlet and backwash outlet are both output to the second mixing tank as filtrate; the delivery pressure of the filter pump is 0.4-0.6Mpa.

[0024] Among them, the asphalt storage tank, the first blending tank and the second blending tank in the embodiment of the present invention are all provided with heaters, and the filtrate storage tank is provided with an insulating jacket; the prepreg roller 12 and the coating roller 32 are both hollow rollers and their roller surfaces are evenly distributed with through holes. The technical solution provided by the embodiment of the present invention has the following beneficial effects: (1) This invention uses a special method to filter the asphalt, and mixes the filtrate and the filtrate as asphalt with a higher ash content (the ash content is complex) to directly contact the tire base, while the filtrate is used as asphalt with a lower ash content as the surface layer, which is directly in contact with the air; the viscosity is 43.2-44.1N·m (T0624-2011), and after an aging test at 163°C and 85 minutes, the mass change is 0.08-0.12% (T0609-2011), the peel strength (roll to roll) is greater than 1.8N / mm, the peel strength (roll to aluminum plate) is greater than 2.5N / mm, and the tear strength is greater than 220N.

[0025] (2) No solid waste is generated, and the filtrate is utilized, which can reduce the use of fillers. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a principle block diagram of a dipping device for waterproof coiled material in an embodiment of the present invention; Figure 2 It is a structural schematic diagram of the combination of a prepreg structure, a drying structure and a coating structure; Figure 3 It is a flow chart of a dipping method for a waterproof coiled material provided in an embodiment of the present invention.

[0027] In the figure: 1 prepreg structure, 2 drying structure, 3 coating structure, 4 tire base; 11 prepreg tank, 12 immersion roller, 13 first extrusion roller pair; 31 coating tank, 32 coating roller, 33 second extrusion roller pair, 34 asphalt dripping pipe. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Example 1 See also Figure 3 Embodiment 1 provides a dipping method for a waterproof coiled material, the method comprising: S101: Asphalt is stored in asphalt storage tanks and the evaporated water is collected (through a moisture collection system, achieved by negative pressure), and the storage temperature is 105-120℃.

[0030] S102: The asphalt is delivered to a homogenizer through a fourth delivery pump, and the asphalt is homogenized in the homogenizer at 158-162° C. (heated by a heat exchanger).

[0031] S103: filtering the homogenized asphalt in a filter, with a filtering pressure of 0.4-0.6Mpa and a filtering accuracy of 20-50μm.

[0032] S104: The filtrate is sent to the filtrate storage tank, and then the filtrate is sent to the first blending tank and the second blending tank by the first delivery pump, and the filtrate is sent to the second blending tank.

[0033] S105: Mixing is performed in the first mixing tank (adding other raw materials), and the discharge temperature of the first mixing tank is controlled to be 178-182°C. Mixing is performed in the second mixing tank (adding other raw materials), and the discharge temperature of the second mixing tank is controlled to be 180-185°C. In the second mixing tank, the volume ratio of the filtrate to the filtrate is 3-6:1. Under the ratio of 3-6:1, not only the quality of the coil is good, but also the filtrate and the filtrate can be fully utilized.

[0034] S106: The asphalt composition in the second mixing tank is delivered to the prepreg structure through the third delivery pump, and the asphalt composition in the first mixing tank is delivered to the coating structure through the second delivery pump.

[0035] The asphalt in the embodiment of the present invention is petroleum asphalt with a needle penetration of 100-350 (measured in 0.1 mm). Antioxidants, SBS, fillers, cyclohexane oil, etc. are added to the first mixing tank; antioxidants, SBS, fillers, cyclohexane oil, etc. are added to the second mixing tank. The filler is talcum powder, and the antioxidant is selected from antioxidant 4010 or antioxidant 697. The tire base 4 is a polyester tire with a gram weight of 150-250g / ㎡ and a thickness of 0.9-1.1mm.

[0036] Specifically, in the second blending tank, the weight ratio of each raw material is: 60-80 parts of asphalt, 7-15 parts of SBS, 8-18 parts of naphthenic oil, 18-24 parts of filler and 0.5-2.0 parts of antioxidant. In the first blending tank, the weight ratio of each raw material is: 65-80 parts of asphalt, 8-14 parts of SBS, 8-15 parts of naphthenic oil, 20-25 parts of filler and 0.8-2.2 parts of antioxidant.

[0037] The asphalt composition in the second mixing tank is sent to the prepreg tank 11 of the prepreg structure, and the asphalt composition in the first mixing tank is sent to the coating tank 31 and the asphalt dripping pipe 34 of the coating structure. In the prepreg structure, the residence time of the tire base 4 in the prepreg tank 11 is 3-7S, and the extrusion pressure of the first extrusion roller 13 is 0.35-0.45Mpa. In the coating structure, the residence time of the tire base 4 in the coating tank 31 is 4-9S, and the extrusion pressure of the second extrusion roller 33 is 0.3-0.38Mpa.

[0038] Specifically, in S103, a laminated filter is used for filtration, the material of the filter laminate is carbon steel, and the working pressure is 1.0Mpa. In this patent, there is no need to filter at the working pressure of the laminated filter, which is 40-60% of the working pressure, that is, there is no need to completely separate the ash from the asphalt, which not only improves the filtration speed, but also facilitates subsequent use. The filtrate contains a large amount of asphalt. In this patent, the laminated filter is not only simple in structure, but also can be automatically cleaned. In industrial production, the filtration accuracy of the laminated filter is not high, and the ash content in the asphalt cannot be reduced to a very low level, but it is not a disadvantage in this patent. In this patent, small-particle ash is allowed to pass, so that the asphalt in the coating structure contains mainly small-particle ash and a small amount (the ash content is about 200-1000ppm, in the prior art, if filtered, it is usually controlled below 20ppm), and the asphalt in the prepreg structure contains mainly large-particle ash and a large amount (the ash content is usually greater than 0.7%).

[0039] Specifically, in S105, stirring is first performed at a low temperature, and the temperature is gradually raised to the discharge temperature, and the raw materials are added in the order and ratio during the heating process.

[0040] Example 2 Embodiment 2 provides a dipping method for a waterproof coiled material, the method comprising: S101: Asphalt is stored in an asphalt storage tank and evaporated water is collected. The storage temperature is 110°C.

[0041] S102: homogenizing the asphalt at 160°C.

[0042] S103: The homogenized asphalt is filtered using a laminated filter with a filtration pressure of 0.5 MPa; the filter laminates of the laminated filter are made of carbon steel, the working pressure is 1.0 MPa, and the filtration accuracy is 40 μm.

[0043] S104: Send the filtered material to the first blending tank and the second blending tank, and send the filtered material to the second blending tank.

[0044] S105: Add antioxidant, SBS, filler and cyclohexane oil in the first blending tank according to the proportion, and control the discharge temperature of the first blending tank to be 180°C; add antioxidant, SBS, filler and cyclohexane oil in the second blending tank according to the proportion, and control the discharge temperature of the second blending tank to be 182°C. In the second blending tank, the volume ratio of the filtrate to the filtrate is 4.5:1.

[0045] Among them, in the second mixing tank, the weight ratio of each raw material is: 70 parts of asphalt, 10 parts of SBS, 12 parts of cyclohexane oil, 24 parts of filler and 1 part of antioxidant; in the first mixing tank, the weight ratio of each raw material is: 70 parts of asphalt, 10 parts of SBS, 12 parts of cyclohexane oil, 22 parts of filler and 1.2 parts of antioxidant.

[0046] S106: The asphalt composition from the second mixing tank is delivered to the prepreg tank 11 of the prepreg structure. In the prepreg structure, the residence time of the tire base 4 in the prepreg tank 11 is 5S, and the extrusion pressure of the first extrusion roller 13 is 0.5Mpa. The asphalt composition from the first mixing tank is delivered to the coating tank 31 and the asphalt dripping pipe 34 of the coating structure. In the coating structure, the residence time of the tire base 4 in the coating tank 31 is 6S, and the extrusion pressure of the second extrusion roller 33 is 0.32Mpa.

[0047] After testing, the toughness is 43.5N·m; after an aging test at 163℃, 85min, the mass change is 0.11% (T0609-2011); the peel strength (coil to coil) is 2.1N / mm; the peel strength (coil to aluminum plate) is 2.9N / mm, and the tear strength is 287N.

[0048] Example 3 Embodiment 3 provides a dipping method for a waterproof coiled material, the method comprising: S101: Asphalt is stored in an asphalt storage tank and evaporated water is collected. The storage temperature is 112°C.

[0049] S102: homogenizing the asphalt at 160°C.

[0050] S103: The homogenized asphalt is filtered using a laminated filter with a filtration pressure of 0.4 MPa; the filter laminate of the laminated filter is made of carbon steel, the working pressure is 1.0 MPa, and the filtration accuracy is 35 μm.

[0051] S104: Send the filtered material to the first blending tank and the second blending tank, and send the filtered material to the second blending tank.

[0052] S105: Add antioxidant, SBS, filler and cyclohexane oil in the first blending tank according to the proportion, and control the discharge temperature of the first blending tank to be 180°C; add antioxidant, SBS, filler and cyclohexane oil in the second blending tank according to the proportion, and control the discharge temperature of the second blending tank to be 184°C. In the second blending tank, the volume ratio of the filtrate to the filtrate is 4.3:1.

[0053] Among them, in the second blending tank, the weight ratio of each raw material is: 72 parts of asphalt, 11 parts of SBS, 10 parts of naphthenic oil, 20 parts of filler and 1 part of antioxidant. In the first blending tank, the weight ratio of each raw material is: 75 parts of asphalt, 12 parts of SBS, 12 parts of naphthenic oil, 22 parts of filler and 1.2 parts of antioxidant.

[0054] S106: The asphalt composition in the second mixing tank is sent to the prepreg tank 11 of the prepreg structure. In the prepreg structure, the residence time of the tire base 4 in the prepreg tank 11 is 5S, and the extrusion pressure of the first extrusion roller 13 is 0.38Mpa. The asphalt composition in the first mixing tank is sent to the coating tank 31 and the asphalt dripping pipe 34 of the coating structure. In the coating structure, the residence time of the tire base 4 in the coating tank 31 is 6S, and the extrusion pressure of the second extrusion roller 33 is 0.35Mpa.

[0055] After testing, the adhesive toughness is 43.2N·m; after an aging test at 163℃, 85min, the mass change is 0.12% (T0609-2011); the peel strength (coil to coil) is 2.2N / mm, the peel strength (coil to aluminum plate) is 2.9N / mm; the tear strength is 291N.

[0056] Example 4 See also Figure 2-3 Embodiment 4 provides a dipping device for waterproof coiled material, including an asphalt supply structure and a prepreg structure 1, a drying structure 2 and a coating structure 3 arranged in sequence from front to back. Among them, the prepreg structure 1 includes a prepreg tank 11, at least one (specifically 1-3) immersion rollers 12 in the prepreg tank 11, and a first extrusion pair of rollers 13 above the rear of the prepreg tank 11. Among them, the coating structure 3 includes a coating tank 31, at least one (specifically 1-2) coating rollers 32 in the coating tank 31, a second extrusion pair of rollers 33 above the rear of the coating tank 31, and an asphalt dripping tube 34 located between the coating roller 32 and the second extrusion pair of rollers 33 and directly above the middle of the tire base 4. For details, please refer to the description of application number CN202221235813.5.

[0057] Among them, the asphalt supply structure includes an asphalt storage tank, a first blending tank, a second blending tank, a homogenizer, a heat exchanger, a homogenizing pump, a filter pump, a filter and a filtrate storage tank. The asphalt storage tank is connected to the feed port of the homogenizer through a pipeline with a fourth delivery pump, and the discharge port of the homogenizer is connected to the inlet of the homogenizing pump through a pipeline. The outlet of the homogenizing pump is divided into two outputs, one is connected to the feed port of the filter through a pipeline with a filter pump, and the other is connected to the feed port of the homogenizer through a pipeline with a heat exchanger. The filtrate outlet of the filter is connected to the filtrate storage tank through a pipeline, and the filtrate outlet of the filter is connected to the second blending tank through a pipeline. The filtrate storage tank is connected to the inlet of the first delivery pump through a pipeline; the outlet of the first delivery pump is divided into two outputs, one is connected to the first blending tank through a pipeline, and the other is connected to the second blending tank through a pipeline. The first mixing tank is connected to the coating tank 31 and the asphalt dripping pipe 34 through a pipeline with a second delivery pump, and the second mixing tank is connected to the prepreg tank 11 through a pipeline with a third delivery pump.

[0058] The filter in the embodiment of the present invention is a laminated filter, the filter laminate is made of carbon steel, the working pressure is 1.0Mpa, the materials output from the filtrate outlet and the backwash outlet are output to the second blending tank as filtrate, and the delivery pressure of the filter pump is 0.4-0.6Mpa.

[0059] The asphalt storage tank, the first blending tank and the second blending tank in the embodiment of the present invention are all provided with heaters. The filtrate storage tank is provided with a heat-insulating jacket. The prepreg roller 12 and the coating roller 32 are both hollow rollers and have through holes evenly distributed on their roller surfaces.

[0060] The "first", "second", "third" and "fourth" in this patent are only used for distinction and have no other special meaning. Pumps, flow meters or valves are installed on the pipelines between the structures as needed.

[0061] Comparative Example 1 The process of comparative example 1 is substantially the same as that of embodiment 2, except that step S103 and step S104 are not performed.

[0062] After testing, the toughness is 38.7N·m; after an aging test at 163℃ and 85min, the mass change is 0.14% (T0609-2011); the peel strength (coil to coil) is 1.7N / mm, the peel strength (coil to aluminum plate) is 2.5N / mm; the tear strength is 271N.

[0063] It can be seen from Comparative Example 1 that, compared with the present invention, multiple parameters of Comparative Example 1 are reduced.

[0064] Comparative Example 2 The process of comparative example 2 is substantially the same as that of embodiment 2, except that in step S103, the filtering accuracy is 5 μm.

[0065] After testing, the toughness is 43.4N·m; after an aging test at 163℃, 85min, the mass change is 0.11% (T0609-2011); the peel strength (coil to coil) is 1.7N / mm, the peel strength (coil to aluminum plate) is 2.6N / mm; the tear strength is 274N.

[0066] It can be seen from Comparative Example 2 that the peel strength and tear strength of Comparative Example 2 are lower than those of the present invention. That is, filtering too clean not only slows down the filtering speed, but also reduces the performance of the product.

[0067] Comparative Example 3 The process of Comparative Example 3 is substantially the same as that of Example 2, except that in step S103, the filtration pressure is 1.0 MPa.

[0068] After testing, the toughness is 43.5N·m; after an aging test at 163℃, 85min, the mass change is 0.10% (T0609-2011); the peel strength (coil to coil) is 1.8N / mm, the peel strength (coil to aluminum plate) is 2.7N / mm; the tear strength is 263N.

[0069] It can be seen from Comparative Example 3 that the peel strength and tear strength of Comparative Example 3 are lower than those of the present invention. That is, filtering too clean not only slows down the filtering speed, but also reduces the performance of the product.

[0070] Comparative Example 4 The process of Comparative Example 4 is substantially the same as that of Example 2, except that in step S105, the volume ratio of the filtrate to the filtrate is 1:1.

[0071] After testing, the viscosity is 43.2N·m; after aging test at 163℃, 85min, the mass change is 0.13% (T0609-2011); the peel strength (coil to coil) is 2.0N / mm, the peel strength (coil to aluminum plate) is 2.9N / mm; the tear strength is 279N. It can be seen from Comparative Example 4 that the peel strength (coil to coil) and tear strength of Comparative Example 4 are slightly lower than those of this patent. That is, the filtrate is used excessively, and additional asphalt needs to be added to the prepreg tank, and the performance of the product will be slightly reduced.

[0072] Comparative Example 5 The process of Comparative Example 5 is basically the same as that of Example 2, except that the second blending tank uses the asphalt from step S102.

[0073] After testing, the toughness is 43.5N·m; after an aging test at 163℃, 85min, the mass change is 0.11% (T0609-2011); the peel strength (coil to coil) is 1.8N / mm, the peel strength (coil to aluminum plate) is 2.7N / mm; the tear strength is 285N.

[0074] It can be seen from Comparative Example 5 that the peel strength and tear strength of Comparative Example 5 are slightly reduced compared with the present patent.

[0075] Comparative Example 6 The process of Comparative Example 6 is basically the same as that of Example 2, except that the first blending tank uses the asphalt from step S102.

[0076] After testing, the toughness is 38.5N·m; after an aging test at 163℃, 85min, the mass change is 0.15% (T0609-2011); the peel strength (coil to coil) is 2.0N / mm, the peel strength (coil to aluminum plate) is 2.9N / mm, and the tear strength is 275N.

[0077] It can be seen from Comparative Example 6 that, compared with the present invention, the viscosity and aging resistance of Comparative Example 6 are reduced.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dipping method for waterproofing coiled material, characterized in that: The method comprises: S101: Asphalt is stored in an asphalt storage tank and the evaporated water is collected. The storage temperature is 105-120°C; S102: homogenizing the asphalt at 158-162°C; S103: filtering the homogenized asphalt at a filtration pressure of 0.4-0.6Mpa and a filtration accuracy of 20-50μm; S104: sending the filtered material to the first blending tank and the second blending tank, and sending the filtered material to the second blending tank; S105: blending in a first blending tank, controlling the discharge temperature of the first blending tank to be 178-182° C.; blending in a second blending tank, controlling the discharge temperature of the second blending tank to be 180-185° C., and in the second blending tank, the volume ratio of the filtrate to the filtrate is 3-6:1; S106: delivering the asphalt composition in the second mixing tank to the prepreg structure, and delivering the asphalt composition in the first mixing tank to the coating structure.

2. The dipping method for waterproof coiled material according to claim 1, characterized in that: The asphalt is petroleum asphalt with a needle penetration of 100-350; antioxidant, SBS, filler and cyclohexane oil are added to the first mixing tank; antioxidant, SBS, filler and cyclohexane oil are added to the second mixing tank; the filler is talcum powder, and the antioxidant is selected from antioxidant 4010 or antioxidant 697; the tire base (4) is a polyester tire with a gram weight of 150-250g / ㎡ and a thickness of 0.9-1.1mm.

3. The dipping method for waterproof coiled material according to claim 2, characterized in that: In the second blending tank, the weight ratio of each raw material is: 60-80 parts of asphalt, 7-15 parts of SBS, 8-18 parts of cyclohexane oil, 18-24 parts of filler and 0.5-2.0 parts of antioxidant; in the first blending tank, the weight ratio of each raw material is: 65-80 parts of asphalt, 8-14 parts of SBS, 8-15 parts of cyclohexane oil, 20-25 parts of filler and 0.8-2.2 parts of antioxidant.

4. The dipping method for waterproof coiled material according to claim 1, characterized in that: The asphalt composition in the second mixing tank is sent to the pre-preg tank (11) of the pre-preg structure, and the asphalt composition in the first mixing tank is sent to the coating tank (31) and the asphalt dripping pipe (34) of the coating structure; In the prepreg structure, the residence time of the tire base (4) in the prepreg tank (11) is 3-7 seconds, and the extrusion pressure of the first extrusion roller pair (13) is 0.35-0.45Mpa; in the coating structure, the residence time of the tire base (4) in the coating tank (31) is 4-9 seconds, and the extrusion pressure of the second extrusion roller pair (33) is 0.30-0.38Mpa.

5. The dipping method for waterproof coiled material according to claim 1, characterized in that: In S103, a laminated filter is used for filtering, the filter laminate is made of carbon steel, and the working pressure is 1.0 MPa.

6. The dipping method for waterproof coiled material according to claim 1, characterized in that: In S105, the mixture is first stirred at a low temperature and then gradually heated to the discharge temperature. During the heating process, each raw material is added in the order and ratio of addition.

7. The dipping method for waterproof coiled material according to claim 1, characterized in that: The method comprises: S101: Asphalt is stored in an asphalt storage tank and the evaporated water is collected. The storage temperature is 105-120°C; S102: homogenizing the asphalt at 158-162°C; S103: using a laminated filter to filter the homogenized asphalt at a filtration pressure of 0.4-0.6Mpa; the material of the filter laminate of the laminated filter is carbon steel, the working pressure is 1.0Mpa, and the filtration accuracy is 20-50μm; S104: sending the filtered material to the first blending tank and the second blending tank, and sending the filtered material to the second blending tank; S105: adding antioxidant, SBS, filler and cyclohexane oil in a proportion to the first blending tank, and controlling the discharge temperature of the first blending tank to be 178-182° C.; adding antioxidant, SBS, filler and cyclohexane oil in a proportion to the second blending tank, and controlling the discharge temperature of the second blending tank to be 180-185° C., and in the second blending tank, the volume ratio of the filtrate to the filtrate is 3-6:1; Among them, in the second blending tank, the weight ratio of each raw material is: 60-80 parts of asphalt, 7-15 parts of SBS, 8-18 parts of naphthenic oil, 18-24 parts of filler and 0.5-2.0 parts of antioxidant; in the first blending tank, the weight ratio of each raw material is: 65-80 parts of asphalt, 8-14 parts of SBS, 8-15 parts of naphthenic oil, 20-25 parts of filler and 0.8-2.2 parts of antioxidant; S106: The asphalt composition from the second mixing tank is delivered to the prepreg tank (11) of the prepreg structure. In the prepreg structure, the residence time of the tire base (4) in the prepreg tank (11) is 3-7S, and the extrusion pressure of the first extrusion roller pair (13) is 0.35-0.45Mpa; the asphalt composition from the first mixing tank is delivered to the coating tank (31) and the asphalt dripping pipe (34) of the coating structure. In the coating structure, the residence time of the tire base (4) in the coating tank (31) is 4-9S, and the extrusion pressure of the second extrusion roller pair (33) is 0.30-0.38Mpa.

8. A waterproofing coiled material dipping device, comprising an asphalt supply structure and a pre-impregnation structure (1), a drying structure (2) and a coating structure (3) arranged in sequence from front to back, wherein the pre-impregnation structure (1) comprises a pre-impregnation tank (11), at least one immersion roller (12) in the pre-impregnation tank (11) and a first pair of extrusion rollers (13) above and behind the pre-impregnation tank (11); the coating structure (3) comprises a coating tank (31), at least one coating roller (32) in the coating tank (31), and a coating tank (32). 1) an asphalt dripping pipe (34) located between the second extrusion roller pair (33) at the upper rear part and the coating roller (32) and the second extrusion roller pair (33) and just above the middle of the tire base (4), the asphalt supply structure comprising an asphalt storage tank, a first blending tank and a second blending tank, the first blending tank being connected to the coating tank (31) and the asphalt dripping pipe (34) via a pipeline with a second delivery pump, and the second blending tank being connected to the prepreg tank (11) via a pipeline with a third delivery pump; characterized in that: The asphalt supply structure also includes a homogenizer, a heat exchanger, a homogenizing pump, a filtering pump, a filter and a filtrate storage tank. The asphalt storage tank is connected to the feed port of the homogenizer through a pipeline with a fourth delivery pump, and the discharge port of the homogenizer is connected to the inlet of the homogenizing pump through a pipeline; the outlet of the homogenizing pump is divided into two outputs, one is connected to the feed port of the filter through a pipeline with a filtering pump, and the other is connected to the feed port of the homogenizer through a pipeline with a heat exchanger; the filtrate outlet of the filter is connected to the filtrate storage tank through a pipeline, the filtrate outlet of the filter is connected to the second blending tank through a pipeline, and the filtrate storage tank is connected to the inlet of the first delivery pump through a pipeline; the outlet of the first delivery pump is divided into two outputs, one is connected to the first blending tank through a pipeline, and the other is connected to the second blending tank through a pipeline.

9. The dipping device for waterproof coiled material according to claim 8, characterized in that: The filter is a laminated filter, the filter laminate is made of carbon steel, the working pressure is 1.0Mpa, and the materials output from the filtrate outlet and the backwash outlet are both output to the second blending tank as filtrate; the delivery pressure of the filter pump is 0.4-0.6Mpa.

10. The dipping device for waterproof coiled material according to claim 8, characterized in that: The asphalt storage tank, the first blending tank and the second blending tank are all provided with heaters, and the filtrate storage tank is provided with a heat-insulating jacket; the prepreg roller (12) and the coating roller (32) are both hollow rollers and have through holes evenly distributed on their roller surfaces.

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