High-strength stainless steel waterproof coil material and its manufacturing method

Abstract

The present invention relates to the technical field of waterproofing coil material, and provides a high-strength stainless steel waterproofing coil material and a method for manufacturing the same. [Solution] This high-strength stainless steel waterproof coil material is composed of, from bottom to top, a stainless steel material, a first adhesive layer, a waterproof layer, a second adhesive layer, and an isolation film. The raw materials of the first adhesive layer each contain the following components by weight: 80-90 parts butyl rubber, 10-30 parts polypropylene, 20-30 parts filler A, 12-18 parts adhesion promoter, 0.2-0.5 parts coupling agent, 8-12 parts softener, 1-2 parts tin chloride, 1-3 parts vulcanizing agent, and 2-3 parts accelerator. The adhesion promoter is made of polyurethane and o-ethoxyphenyl isocyanate, and the first adhesive layer and the second adhesive layer are made of the same raw materials. The above technical solution solves the problem of the prior art, which is that stainless steel waterproof coil material has low adhesive peel strength and a significant decrease in adhesive peel strength after immersion in water.

Description

[Technical Field]

[0001] The present invention relates to the technical field of waterproof coil material, and more particularly to high-strength stainless steel waterproof coil material and a method for manufacturing the same. [Background technology]

[0002] Waterproofing materials are materials that prevent rainwater, groundwater, industrial and residential water supply and drainage systems, corrosive liquids, and atmospheric moisture and water vapor from penetrating into buildings. Based on their form, waterproofing materials are primarily divided into three categories: 1) waterproof coil material, 2) 911 polyurethane waterproof coating, and 3) new polymer cement waterproofing material. Waterproof coil material is primarily used in civil engineering projects such as roofs, exterior walls, and basements. The selection of waterproof coil material is particularly important in construction work, as its quality determines, to some extent, the quality of the construction and the service life of the building. The use of poor-performance waterproofing materials can lead to roof leaks and other problems, severely impacting people's daily lives.

[0003] To meet the requirements for high-strength waterproof coil material, stainless steel is used as the base material for the waterproof material. However, existing waterproof materials have low adhesion to stainless steel, and this adhesion decreases significantly after immersion in water. This results in a problem in that the peel strength of the stainless steel waterproof coil material is low, and the peel strength decreases significantly after immersion in water. Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention proposes a high-strength stainless steel waterproof coil material and a manufacturing method thereof, which solves the problem that the adhesive peel strength of the stainless steel waterproof coil material in the related art is low and the adhesive peel strength decreases significantly after immersion in water. [Means for solving the problem]

[0005] The technical solutions of the present invention are as follows:

[0006] The high-strength stainless steel waterproof coil material is provided with, from bottom to top, a stainless steel material, a first adhesive layer, a waterproof layer, a second adhesive layer, and an isolation film, in that order. The raw materials for the first adhesive layer all contain the following components by weight: 80 to 90 parts butyl rubber, 10 to 30 parts polypropylene, 20 to 30 parts filler A, 12 to 18 parts adhesion promoter, 0.2 to 0.5 parts coupling agent, 8 to 12 parts softener, 1 to 2 parts tin chloride, 1 to 3 parts vulcanizing agent, and 2 to 3 parts accelerator. The adhesion promoter is made of polyurethane and o-ethoxyphenyl isocyanate. The first adhesive layer and the second adhesive layer are made of the same raw materials.

[0007] As a further technical solution, the mass ratio of the polyurethane to o-ethoxyphenyl isocyanate is 4:1-3.

[0008] In a further technical solution, the weight ratio of the polyurethane to o-ethoxyphenyl isocyanate is 2:1.

[0009] The present inventors have discovered that when the mass ratio of polyurethane to o-ethoxyphenyl isocyanate is 2:1, the adhesive peel strength of waterproof stainless steel coil material and the retention rate of adhesive peel strength after immersion in water can be further improved.

[0010] As a further technical solution, the filler A comprises one or more of calcium carbonate, talc powder, and white carbon black.

[0011] In a further technical solution, the accelerator comprises one or more of accelerator TMTD, accelerator DM, and accelerator M.

[0012] As a further technical solution, the softener comprises one or more of naphthenic oil and pine tar.

[0013] As a further technical solution, the waterproof layer comprises the following components in parts by weight: polyvinyl chloride resin, vulcanizing agent B, filler B, plasticizer, antioxidant, and anti-aging agent.

[0014] As a further technical solution, the raw materials of the waterproof layer comprise the following components in parts by weight: 50-60 parts polyvinyl chloride resin, 1-2 parts vulcanizing agent B, 5-10 parts filler B, 6-10 parts plasticizer, 0.5-1 part antioxidant, and 0.2-0.4 parts anti-aging agent.

[0015] As a further technical solution, the filler B comprises one or more of calcium carbonate, talc powder, and white carbon black.

[0016] In a further technical solution, the antioxidant comprises one or more of antioxidant 1010 and antioxidant 1076.

[0017] In a further technical solution, the anti-aging agent comprises one or more of the following: anti-aging agent 4020, anti-aging agent 445, and anti-aging agent 3100.

[0018] As a further technical solution, the manufacturing method of the waterproof layer is to obtain a molded sheet material after melting and extruding each component of the raw material of the waterproof layer, and then to draw, roll and cool the molded sheet material to obtain the waterproof layer.

[0019] As a further technical solution, the isolating film includes one of a PE film and a PVC film.

[0020] As a further technical solution, the manufacturing method of the first adhesive layer is as follows: A1, butyl rubber, polypropylene, softener and tin chloride were uniformly melt-mixed to obtain mixture A; A2 and the remaining ingredients are added to mixture A, melt-mixed uniformly, and extruded to obtain an adhesive layer.

[0021] As a further technical solution, the manufacturing method of the second adhesive layer is the same as the manufacturing method of the first adhesive layer.

[0022] As a further technical solution, the melting temperature of said S1 is 165-180°C.

[0023] The present invention further includes a method for manufacturing high-strength stainless steel waterproof coil stock, which includes the step of hot-pressing a stainless steel material, a first adhesive layer, a waterproof layer, a second adhesive layer, and an isolation film in this order from bottom to top to obtain a stainless steel waterproof coil stock.

[0024] As a further technical solution, the thickness of the waterproof layer in the stainless steel waterproof coil material is 2 to 4 mm.

[0025] As a further technical solution, the thickness of the first adhesive layer in the stainless steel waterproof coil material is 0.3 to 0.5 mm.

[0026] As a further technical solution, the thickness of the second adhesive layer in the stainless steel waterproof coil material is 0.3 to 0.5 mm. [Effects of the Invention]

[0027] The operating principle and beneficial effects of the present invention are as follows. 1. The waterproof stainless steel coil material of the present invention has an improved peel strength due to the addition of an adhesive layer between the stainless steel material and the waterproof layer. An adhesion promoter consisting of polyurethane and o-ethoxyphenyl isocyanate is added to the adhesive layer. The addition of the adhesion promoter not only improves the adhesive peel strength of the waterproof stainless steel coil material, but also further improves the retention rate of the adhesive peel strength of the waterproof stainless steel coil material after immersion in water. 2. In the present invention, by limiting the mass ratio of polyurethane to oo-ethoxyisocyanatebenzene to 4:1-3, the adhesive peel strength of the stainless steel waterproof coil material and the adhesive peel strength retention rate after immersion in water can be further improved. DETAILED DESCRIPTION OF THE INVENTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present invention. [Example]

[0029] The manufacturing method of the stainless steel waterproof coil material is as follows: the stainless steel material, the first adhesive layer, the waterproof layer, the second adhesive layer, and the isolation film are heat-pressed from bottom to top to obtain the stainless steel waterproof coil material. Here, the manufacturing method of the adhesive layer is as follows: A1, 80 parts of butyl rubber, 10 parts of polypropylene, 8 parts of naphthenic oil and 1 part of tin chloride were stirred at 165°C for 20 minutes to obtain a mixture A; A2: 12 parts polyurethane, 6 parts o-ethoxyphenyl isocyanate, 0.2 parts silane coupling agent KH-550, 1 part sulfur, 20 parts calcium carbonate, and 2 parts accelerator DM were added to mixture A, and the mixture was stirred for 15 minutes to achieve uniform mixing. After that, the mixture was extruded, drawn, rolled, and cooled to obtain a first adhesive layer having a thickness of 0.3 mm and a second adhesive layer having a thickness of 0.3 mm. Here, the manufacturing method of the waterproof layer is as follows: 50 parts of polyvinyl chloride resin, 1 part of sulfur, 5 parts of white carbon black, 6 parts of dioctyl phthalate, 0.5 parts of antioxidant 1010, and 0.2 parts of antioxidant 4020 were mixed and charged into an extruder. The mixture was melt-extruded at 140°C to obtain a molded sheet material, and the formed sheet layer was drawn, rolled, and cooled to obtain a waterproof layer with a thickness of 2 mm. [Example]

[0030] The manufacturing method of the stainless steel waterproof coil material is as follows: the stainless steel material, the first adhesive layer, the waterproof layer, the second adhesive layer, and the isolation film are heat-pressed from bottom to top to obtain the stainless steel waterproof coil material. Here, the manufacturing method of the adhesive layer is as follows: A1, 85 parts of butyl rubber, 20 parts of polypropylene, 10 parts of pine tar and 1.5 parts of tin chloride were stirred at 175°C for 16 minutes to obtain mixture A; A2: 12.8 parts of polyurethane, 3.2 parts of o-ethoxyphenyl isocyanate, 0.4 parts of silane coupling agent KH-550, 2 parts of sulfur, 25 parts of white carbon black, and 3 parts of accelerator M were added to mixture A, and the mixture was stirred for 16 minutes until uniformly mixed. After that, the mixture was extruded, drawn, rolled, and cooled to obtain a first adhesive layer having a thickness of 0.4 mm and a second adhesive layer having a thickness of 0.5 mm. Here, the manufacturing method of the waterproof layer is as follows: 55 parts of polyvinyl chloride resin, 1.5 parts of sulfur, 8 parts of calcium carbonate, 8 parts of dioctyl phthalate, 0.8 parts of antioxidant 1010, and 0.3 parts of antioxidant 4020 were mixed and charged into an extruder. The mixture was melt-extruded at 140°C to obtain a molded sheet material, and the formed sheet layer was drawn, rolled, and cooled to obtain a waterproof layer having a thickness of 3 mm. [Example]

[0031] The manufacturing method of the stainless steel waterproof coil material is as follows: the stainless steel material, the first adhesive layer, the waterproof layer, the second adhesive layer, and the isolation film are heat-pressed from bottom to top to obtain the stainless steel waterproof coil material. Here, the manufacturing method of the adhesive layer is as follows: A1, 90 parts of butyl rubber, 30 parts of polypropylene, 12 parts of pine tar, and 2 parts of tin chloride were stirred at 180°C for 15 minutes to obtain a mixture A. A2: 6.8 parts of polyurethane, 5.2 parts of o-ethoxyphenyl isocyanate, 0.5 parts of silane coupling agent KH-550, 3 parts of sulfur, 30 parts of white carbon black, and 2.5 parts of accelerator TMTD were added to mixture A, and the mixture was stirred for 20 minutes until uniformly mixed. After that, the mixture was extruded, drawn, rolled, and cooled to obtain a first adhesive layer having a thickness of 0.5 mm and a second adhesive layer having a thickness of 0.5 mm. Here, the manufacturing method of the waterproof layer is as follows: 60 parts of polyvinyl chloride resin, 2 parts of sulfur, 10 parts of talc powder, 10 parts of dioctyl phthalate, 1 part of antioxidant 1010, and 0.4 parts of antioxidant 4020 were mixed and charged into an extruder. The mixture was melt-extruded at 140°C to obtain a molded sheet material. The formed sheet layer was drawn, rolled, and cooled to obtain a waterproof layer having a thickness of 4 mm. [Example]

[0032] Compared to Example 3, Example 4 differed in that 8 parts polyurethane and 4 parts oo-ethoxyisocyanate benzene were added. [Example]

[0033] Compared to Example 3, Example 5 differed in that 9.6 parts of polyurethane and 2.4 parts of oo-ethoxyisocyanate benzene were added.

[0034] In comparison with Example 3, Comparative Example 1 was the same as Example 3 except that polyurethane and oo-ethoxyisocyanate benzene were added.

[0035] In comparison with Example 3, Comparative Example 2 was the same as Example 3 except that oo-ethoxyisocyanate benzene was not added.

[0036] In comparison with Example 3, Comparative Example 3 did not contain polyurethane, and the other conditions were the same as Example 3.

[0037] The performance of the adhesive layers obtained in Examples 1 to 5 and Comparative Examples 1 to 3 was measured as follows. Refer to the requirements and measurement method of GB / T18173.1-2012 "Polymer waterproof coil material Part 1: Sheet material" FS1, measure the initial adhesive peel strength and adhesive peel strength after water immersion (23℃, 168h), and calculate the adhesive peel strength retention rate after water immersion. Adhesion strength retention rate after water immersion (100%) = (initial adhesive peel strength - initial adhesive peel strength after water immersion) / initial adhesive peel strength x 100 The test results are shown in Table 1. Table 1: Performance test results of the waterproof stainless steel coil materials obtained from Examples 1 to 5 and Comparative Examples 1 to 3 [Table 1]

[0038] Compared with Example 3, in Comparative Example 1, polyurethane and oo-ethoxyisocyanate benzene were not added, in Comparative Example 2, oo-ethoxyisocyanate benzene was not added, and in Comparative Example 3, polyurethane was not added. As a result, the stainless steel waterproof coil materials produced in Comparative Examples 1 to 3 had lower initial adhesive peel strength and adhesive peel strength retention after immersion in water than that of Example 1, and it was found that by adding polyurethane and oo-ethoxyisocyanate benzene simultaneously, not only can the initial adhesive peel strength be improved, but the adhesive peel strength retention after immersion in water can also be improved.

[0039] Compared to Example 3, Examples 4 and 5 changed the mass ratio of polyurethane to oo-ethoxyisocyanate benzene. As a result, the initial adhesive peel strength and the retention rate of adhesive peel strength after immersion in water in Example 4 were higher than those in Examples 3 and 5, and it was found that when the mass ratio of polyurethane to oo-ethoxyisocyanate benzene was 2:1, the initial adhesive peel strength and the retention rate of adhesive peel strength after immersion in water of the stainless steel waterproof coil material were further improved.

[0040] The above are only preferred embodiments of the present application, and do not limit the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present application.

Claims

1. 1. A high-strength stainless steel waterproof coil material comprising, from bottom to top, a stainless steel material, a first adhesive layer, a waterproof layer, a second adhesive layer, and an isolation film; wherein the raw materials of the first adhesive layer all contain the following components, by weight: 80-90 parts butyl rubber, 10-30 parts polypropylene, 20-30 parts filler A, 12-18 parts adhesion promoter, 0.2-0.5 parts coupling agent, 8-12 parts softener, 1-2 parts tin chloride, 1-3 parts vulcanizing agent, and 2-3 parts accelerator; the adhesion promoter comprises polyurethane and o-ethoxyphenyl isocyanate; and the first adhesive layer and the second adhesive layer are made from the same raw materials.

2. 2. The high-strength stainless steel waterproof coil material according to claim 1, wherein the mass ratio of the polyurethane to o-ethoxyphenyl isocyanate is 4:1-3.

3. 2. The high-strength stainless steel waterproof coil material according to claim 1, wherein the filler A comprises one or more of calcium carbonate, talc powder, and white carbon black.

4. 2. The waterproof high-strength stainless steel coil material according to claim 1, wherein the accelerator comprises one or more of accelerators TMTD, DM, and M.

5. 2. The high-strength stainless steel waterproof coil material according to claim 1, wherein the softener comprises one or more of naphthenic oil and pine tar.

6. 2. The high-strength stainless steel waterproof coil material according to claim 1, wherein the raw materials of the waterproof layer include the following components, by weight: polyvinyl chloride resin, vulcanizing agent B, filler B, plasticizer, antioxidant, and anti-aging agent.

7. 2. The high-strength stainless steel waterproof coil material according to claim 1, wherein the isolation film comprises one of a PE film and a PVC film.

8. The method for manufacturing the first adhesive layer includes: A1, butyl rubber, polypropylene, a softener, and tin chloride are uniformly melt-mixed to obtain a mixture; A2. Adding the remaining components to the mixture, melt-mixing them uniformly, and then extruding the mixture to obtain an adhesive layer; 2. The high-strength stainless steel waterproof coil material according to claim 1, wherein the second adhesive layer is manufactured by the same method as the first adhesive layer.

9. 9. The high-strength waterproof stainless steel coil material according to claim 8, wherein the melting temperature in the A1 is 165 to 180°C.

10. The method for producing a high-strength waterproof stainless steel coil material according to any one of claims 1 to 9, characterized in that it comprises a step of hot-pressing a stainless steel material, an adhesive layer, a waterproof layer, another adhesive layer, and an isolation film in this order from bottom to top to obtain a waterproof stainless steel coil material.

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