A double-layer pre-composite double-sided composite polymer waterproof roll and its preparation method

Abstract

The present invention relates to the field of building waterproofing technology and proposes a double-layer pre-compounded, double-sided composite polymer waterproofing membrane and a preparation method thereof. The double-layer pre-compounded, double-sided composite polymer waterproofing membrane comprises, from top to bottom, a first non-woven fabric, a first waterproof layer, a second non-woven fabric, an adhesive layer, a third non-woven fabric, a second waterproof layer, and a fourth non-woven fabric. The first waterproof layer and the second waterproof layer each independently comprise the following raw materials in parts by weight: 50-60 parts polyethylene, 30-40 parts thermoplastic polyolefin, 10-15 parts polyaryletherketone, 15-20 parts filler, 1-2 parts antioxidant, and 2-3 parts compatibilizer. This technical solution solves the problems of low mechanical strength and poor corrosion resistance of waterproofing membranes in related technologies.

Description

Technical Field

[0001] The present invention relates to the technical field of building waterproofing, and in particular to a double-layer pre-composite double-sided composite polymer waterproofing coil and a preparation method thereof. Background Art

[0002] Waterproofing has always been a crucial aspect of construction engineering. With the rapid development of the construction industry, various building structures, such as roofs, walls, basements, pipe corridors, tunnels, cold storage, bridges, gardens, civil air defense, and pools, have placed increasingly stringent demands on waterproofing performance. Traditional waterproofing materials have gradually exposed their limitations over time.

[0003] Some early waterproofing materials, such as ordinary asphalt membranes, while effective, suffer from poor durability and susceptibility to aging and cracking, making them difficult to meet the demands of modern buildings for a long service life. Furthermore, in complex environments, especially in key projects with high durability and corrosion resistance requirements, waterproofing membranes made of a single material often cannot effectively cope with the stress caused by structural deformation, which can easily lead to rupture and failure of the waterproof layer, causing leakage and serious damage to the stability of the building structure and internal facilities. Therefore, it is of great significance to develop a high-strength, corrosion-resistant waterproofing membrane that can meet stable waterproofing performance. Summary of the Invention

[0004] The present invention provides a double-layer pre-composite double-sided composite polymer waterproof roll and a preparation method thereof, which solves the problems of low mechanical strength and poor corrosion resistance of waterproof rolls in related technologies.

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

[0006] The present invention proposes a double-layer pre-composite double-sided composite polymer waterproof roll, which includes, from top to bottom, a first non-woven fabric, a first waterproof layer, a second non-woven fabric, an adhesive layer, a third non-woven fabric, a second waterproof layer, and a fourth non-woven fabric. The first waterproof layer and the second waterproof layer each independently include the following raw materials in parts by weight: 50-60 parts of polyethylene, 30-40 parts of thermoplastic polyolefin, 10-15 parts of polyaryletherketone, 15-20 parts of filler, 1-2 parts of antioxidant, and 2-3 parts of compatibilizer.

[0007] As a further technical solution, the polyaryletherketone consists of a first polyaryletherketone and a second polyaryletherketone, and the first polyaryletherketone and the second polyaryletherketone have different melt indices.

[0008] As a further technical solution, the melt index of the first polyaryletherketone is 55 g / 10 min, and the melt index of the second polyaryletherketone is 9 g / 10 min.

[0009] The melt index of the first polyaryletherketone is measured at 400° C. and a load of 2.16 kg. The melt index of the second polyaryletherketone is measured at 400° C. and a load of 2.16 kg.

[0010] As a further technical solution, the mass ratio of the first polyaryletherketone to the second polyaryletherketone is 1-3:5.

[0011] In the present invention, by limiting the mass ratio of the first polyaryletherketone to the second polyaryletherketone to 1-3:5, the mechanical strength and corrosion resistance of the waterproof membrane are further improved.

[0012] As a further technical solution, the mass ratio of the first polyaryletherketone to the second polyaryletherketone is 2:5.

[0013] In the present invention, by limiting the mass ratio of the first polyaryletherketone to the second polyaryletherketone to 2:5, the mechanical strength and corrosion resistance of the waterproof membrane are further improved.

[0014] As a further technical solution, the adhesive layer comprises the following raw materials in parts by weight: 40-50 parts of SEBS, 15-20 parts of chloroprene rubber, 10-15 parts of terpene resin, 10-20 parts of naphthenic oil, and 8-12 parts of 3,4-dichloro-benzenepentadecanoic acid-modified polyester fiber.

[0015] In the present invention, the mechanical strength of the waterproof roll is further improved by adding 3,4-dichloro-benzenepentadecanoic acid modified polyester fiber into the adhesive layer.

[0016] As a further technical solution, the amount of 3,4-dichloro-benzenepentadecanoic acid added to the raw material of the 3,4-dichloro-benzenepentadecanoic acid-modified polyester fiber is 5% to 8% of the mass of the polyester fiber.

[0017] In the present invention, the mechanical strength of the waterproof membrane is further improved by limiting the addition amount of 3,4-dichloro-benzenepentadecanoic acid to 5% to 8% of the mass of the polyester fiber.

[0018] As a further technical solution, the preparation method of the 3,4-dichloro-benzenepentadecanoic acid modified polyester fiber comprises the following steps: adding the polyester fiber into methanol to disperse it evenly, adding 3,4-dichloro-benzenepentadecanoic acid to modify it, and drying to obtain the 3,4-dichloro-benzenepentadecanoic acid modified polyester fiber.

[0019] As a further technical solution, the modification temperature is 35-45° C., and the modification time is 3-5 hours.

[0020] As a further technical solution, the first non-woven fabric, the second non-woven fabric, the third non-woven fabric, and the fourth non-woven fabric are all high-strength polypropylene non-woven fabrics.

[0021] As a further technical solution, the filler includes one or more of light calcium carbonate, kaolin, and talc.

[0022] As a further technical solution, the antioxidant includes one or more of antioxidant 264 , antioxidant 1010 , and antioxidant 168 .

[0023] As a further technical solution, the compatibilizer is maleic anhydride grafted polyethylene.

[0024] As a further technical solution, the thickness of the first waterproof layer and the second waterproof layer are independently 0.8~1mm.

[0025] As a further technical solution, the thickness of the first non-woven fabric, the second non-woven fabric, the third non-woven fabric, and the fourth non-woven fabric are independently 0.9-2 mm.

[0026] As a further technical solution, the thickness of the adhesive layer is 1.5-2 mm.

[0027] The present invention also provides a method for preparing a double-layer pre-composite double-sided composite polymer waterproof membrane, comprising the following steps:

[0028] S1, mixing the raw materials of the first waterproof layer and the second waterproof layer respectively, and then extruding and molding to obtain a first waterproof layer sheet and a second waterproof layer sheet;

[0029] S2, mixing and melting the bonding layer raw materials to obtain an adhesive;

[0030] S3. The first non-woven fabric, the first waterproof layer, the second non-woven fabric, the adhesive layer, the third non-woven fabric, the second waterproof layer, and the fourth non-woven fabric are stacked in order from top to bottom, and then hot-pressed to obtain a double-layer pre-composite double-sided composite polymer waterproof membrane.

[0031] The working principle and beneficial effects of the present invention are:

[0032] In the present invention, a double-layer pre-composite double-sided composite polymer waterproof roll is composed of a first non-woven fabric, a first waterproof layer, a second non-woven fabric, an adhesive layer, a third non-woven fabric, a second waterproof layer, and a fourth non-woven fabric, and polyaryletherketone is added to the waterproof layer. The mechanical strength and corrosion resistance of the waterproof roll are improved, and it can better adapt to the deformation of the main body of the building structure, and the application scenarios are more extensive. DETAILED DESCRIPTION

[0033] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0034] In the following examples and comparative examples:

[0035] High-strength polypropylene nonwoven fabric, thickness: 0.9-2mm; polyethylene, model: MG70; thermoplastic polyolefin, model: TPOHifax CA 7320A; polyaryletherketone AV-481, melt index: 55g / 10min (400°C, 2.16kg); polyaryletherketone AV-651GF30 BG 20, melt index: 9g / 10min (400°C, 2.16kg); maleic anhydride-grafted polyethylene, model: 41E755; SEBS, model: 6154; chloroprene rubber, model: CR232; terpene resin, model: T100; naphthenic oil, model: KN4010; polyester fiber, diameter: 10-25μm, length: 4mm.

[0036] Example 1

[0037] A method for preparing a double-layer pre-compounded double-sided composite polymer waterproof membrane comprises the following steps:

[0038] S1. Mix 50 parts of polyethylene, 30 parts of thermoplastic polyolefin, 10 parts of polyaryletherketone AV-481, 15 parts of light calcium carbonate, 1 part of antioxidant 264, and 2 parts of maleic anhydride grafted polyethylene, and extrude and shape them to obtain a first waterproof layer sheet and a second waterproof layer sheet. The thickness of the first waterproof layer sheet and the second waterproof layer sheet are both 0.8 mm;

[0039] S2, mixing 40 parts of SEBS, 15 parts of chloroprene rubber, 10 parts of terpene resin, 10 parts of naphthenic oil, and 8 parts of polyester fiber, and melting them to obtain an adhesive;

[0040] S3. High-strength polypropylene non-woven fabric, first waterproof layer sheet, high-strength polypropylene non-woven fabric, adhesive, high-strength polypropylene non-woven fabric, second waterproof layer sheet, and high-strength polypropylene non-woven fabric are stacked in this order and then hot-pressed to obtain a double-layer pre-composite double-sided composite polymer waterproof membrane.

[0041] Example 2

[0042] S1. Mix 55 parts of polyethylene, 35 parts of thermoplastic polyolefin, 12 parts of polyaryletherketone AV-481, 18 parts of kaolin, 1 part of antioxidant 1010, and 2 parts of maleic anhydride grafted polyethylene, and extrude and shape them to obtain a first waterproof layer sheet and a second waterproof layer sheet. The thickness of the first waterproof layer sheet and the second waterproof layer sheet is 0.9 mm.

[0043] S2, mixing 45 parts of SEBS, 18 parts of chloroprene rubber, 12 parts of terpene resin, 15 parts of naphthenic oil, and 10 parts of polyester fiber, and melting them to obtain an adhesive;

[0044] S3. High-strength polypropylene non-woven fabric, first waterproof layer sheet, high-strength polypropylene non-woven fabric, adhesive, high-strength polypropylene non-woven fabric, second waterproof layer sheet, and high-strength polypropylene non-woven fabric are stacked in this order and then hot-pressed to obtain a double-layer pre-composite double-sided composite polymer waterproof membrane.

[0045] Example 3

[0046] S1. Mix 60 parts of polyethylene, 40 parts of thermoplastic polyolefin, 15 parts of polyaryletherketone AV-481, 20 parts of talc, 2 parts of antioxidant 168, and 3 parts of maleic anhydride grafted polyethylene, and extrude and shape them to obtain a first waterproof layer sheet and a second waterproof layer sheet. The thickness of the first waterproof layer sheet and the second waterproof layer sheet is 1 mm.

[0047] S2, mixing 50 parts of SEBS, 20 parts of chloroprene rubber, 15 parts of terpene resin, 20 parts of naphthenic oil, and 12 parts of polyester fiber, and melting them to obtain an adhesive;

[0048] S3. High-strength polypropylene non-woven fabric, first waterproof layer sheet, high-strength polypropylene non-woven fabric, adhesive, high-strength polypropylene non-woven fabric, second waterproof layer sheet, and high-strength polypropylene non-woven fabric are stacked in this order and then hot-pressed to obtain a double-layer pre-composite double-sided composite polymer waterproof membrane.

[0049] Example 4

[0050] The only difference between this embodiment and embodiment 1 is that the polyaryletherketone AV-481 is replaced by an equal amount of polyaryletherketone AV-651 GF30 BG 20.

[0051] Example 5

[0052] The only difference between this embodiment and embodiment 1 is that polyaryletherketone AV-481 is replaced by equal amounts of polyaryletherketone AV-651 GF30 BG 20 and polyaryletherketone AV-481 in a mass ratio of 1:1.

[0053] Example 6

[0054] The only difference between this embodiment and embodiment 5 is that the mass ratio of polyaryletherketone AV-651 GF30 BG 20 to polyaryletherketone AV-481 is 7:1.

[0055] Example 7

[0056] The only difference between this embodiment and embodiment 5 is that the mass ratio of polyaryletherketone AV-651 GF30 BG 20 to polyaryletherketone AV-481 is 5:1.

[0057] Example 8

[0058] The only difference between this embodiment and embodiment 5 is that the mass ratio of polyaryletherketone AV-651 GF30 BG 20 to polyaryletherketone AV-481 is 5:2.

[0059] Example 9

[0060] The only difference between this embodiment and embodiment 5 is that the mass ratio of polyaryletherketone AV-651 GF30 BG 20 to polyaryletherketone AV-481 is 5:3.

[0061] Example 10

[0062] This embodiment differs from Example 8 only in that the polyester fiber is replaced with an equal amount of 3,4-dichloro-benzenepentadecanoic acid-modified polyester fiber. The preparation method of the 3,4-dichloro-benzenepentadecanoic acid-modified polyester fiber comprises the following steps: adding 40 g of the polyester fiber to 400 mL of methanol, adding 0.8 g of 3,4-dichloro-benzenepentadecanoic acid, mixing, heating to 45° C., stirring for 3 h, and then drying to obtain the 3,4-dichloro-benzenepentadecanoic acid-modified polyester fiber.

[0063] Example 11

[0064] The only difference between this embodiment and embodiment 10 is that the amount of 3,4-dichloro-benzenepentadecanoic acid added is 4 g.

[0065] Example 12

[0066] The only difference between this embodiment and embodiment 10 is that the amount of 3,4-dichloro-benzenepentadecanoic acid added is 2 g.

[0067] Example 13

[0068] The only difference between this embodiment and embodiment 10 is that the amount of 3,4-dichloro-benzenepentadecanoic acid added is 3.2 g.

[0069] Comparative Example 1

[0070] The only difference between this comparative example and Example 1 is that polyaryletherketone AV-481 is not added.

[0071] The double-layer pre-composite double-sided composite polymer waterproof membranes prepared in Examples 1 to 13 and Comparative Example 1 were tested for tensile strength according to Method A in GB / T 328.9-2007 "Test Methods for Building Waterproof Membranes Part 9: Tensile Properties of Polymer Waterproof Membranes". The test results are shown in Table 1.

[0072] Table 1 Mechanical strength test results of double-layer pre-composite double-sided composite polymer waterproof membrane

[0073]

[0074] Compared with Comparative Example 1, Example 1 adds polyaryletherketone AV-481 to the waterproof layer. As a result, the tensile strength of the double-layer pre-composite double-sided composite polymer waterproof membrane prepared in Example 1 is higher than that of Comparative Example 1, indicating that adding polyaryletherketone AV-481 to the waterproof layer can improve the mechanical strength of the double-layer pre-composite double-sided composite polymer waterproof membrane.

[0075] Compared with Example 1, Examples 4 to 8 change the composition of the polyaryletherketone. As a result, the tensile strength of the double-layer pre-composite double-sided composite polymer waterproof membrane prepared in Examples 5 to 9 is higher than that of Example 1 and Example 4, indicating that when the polyaryletherketone is composed of polyaryletherketone AV-481 and polyaryletherketone AV-651 GF30 BG 20, the mechanical strength of the double-layer pre-composite double-sided composite polymer waterproof membrane can be further improved; Comparing Examples 5 to 9, it is found that the tensile strength of the double-layer pre-composite double-sided composite polymer waterproof membrane prepared in Examples 7 to 9 is higher than that of Example 5 and Example 6, indicating that when polyaryletherketone AV-481 and polyaryletherketone AV-651 GF30 BG When the mass ratio of polyaryletherketone AV-481 to polyaryletherketone AV-651 GF30 BG 20 is 5:1-3, the mechanical strength of the double-layer pre-composite double-sided composite polymer waterproof membrane can be further improved; compared with Examples 7-9, it is found that the tensile strength of the double-layer pre-composite double-sided composite polymer waterproof membrane prepared in Example 8 is higher than that of Examples 7 and 9, indicating that when the mass ratio of polyaryletherketone AV-481 to polyaryletherketone AV-651 GF30 BG 20 is 5:2, the mechanical strength of the double-layer pre-composite double-sided composite polymer waterproof membrane prepared is higher.

[0076] Compared with Example 8, in Examples 10 to 13, 3,4-dichloro-benzenepentadecanoic acid was used to modify the polyester fiber. As a result, the tensile strength of the double-layer pre-composite double-sided composite polymer waterproof membrane prepared in Examples 10 to 13 was higher than that in Example 8, indicating that the use of 3,4-dichloro-benzenepentadecanoic acid to modify the polyester fiber can further improve the mechanical strength of the double-layer pre-composite double-sided composite polymer waterproof membrane; compared with Examples 10 to 13, it was found that the tensile strength of the waterproof membrane prepared in Examples 12 to 13 was higher than that in Examples 10 to 11, indicating that when the addition amount of 3,4-dichloro-benzenepentadecanoic acid was 5% to 8% of the mass of the polyester fiber, the mechanical strength of the double-layer pre-composite double-sided composite polymer waterproof membrane obtained was the highest.

[0077] The double-layer pre-composite double-sided composite polymer waterproof membranes prepared in Examples 1 to 9 and Comparative Example 1 were immersed in a 5% sodium hydroxide solution for 168 hours, and their tensile retention rates were tested; tensile retention rate = tensile force after immersion / tensile force before immersion × 100%; the test results are shown in Table 2.

[0078] Table 2 Corrosion resistance test results of double-layer pre-composite double-sided composite polymer waterproof membrane

[0079]

[0080] Compared with Comparative Example 1, Example 1 adds polyaryletherketone AV-481 to the waterproof layer. As a result, the tensile retention rate of the double-layer pre-composite double-sided composite polymer waterproof membrane prepared in Example 1 is higher than that of Comparative Example 1, indicating that adding polyaryletherketone AV-481 to the waterproof layer can improve the corrosion resistance of the double-layer pre-composite double-sided composite polymer waterproof membrane.

[0081] Compared with Example 1, Examples 4 to 8 change the composition of the polyaryletherketone. As a result, the tensile retention rate of the double-layer pre-composite double-sided composite polymer waterproof membrane prepared in Examples 5 to 9 is higher than that of Example 1 and Example 4, indicating that when the polyaryletherketone is composed of polyaryletherketone AV-481 and polyaryletherketone AV-651 GF30 BG 20, the corrosion resistance of the double-layer pre-composite double-sided composite polymer waterproof membrane can be further improved; Comparing Examples 5 to 9, it is found that the tensile retention rate of the double-layer pre-composite double-sided composite polymer waterproof membrane prepared in Examples 7 to 9 is higher than that of Example 5 and Example 6, indicating that when polyaryletherketone AV-481 and polyaryletherketone AV-651 GF30 BG When the mass ratio of polyaryletherketone AV-481 to polyaryletherketone AV-651 GF30 BG 20 is 5:1-3, the corrosion resistance of the double-layer pre-composite double-sided composite polymer waterproof membrane can be further improved; compared with Examples 7-9, it is found that the tensile retention rate of the double-layer pre-composite double-sided composite polymer waterproof membrane prepared in Example 8 is higher than that of Examples 7 and 9, indicating that when the mass ratio of polyaryletherketone AV-481 to polyaryletherketone AV-651 GF30 BG 20 is 5:2, the corrosion resistance of the obtained double-layer pre-composite double-sided composite polymer waterproof membrane is higher.

[0082] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A double-layer pre-composite double-sided composite polymer waterproof membrane, characterized in that: The invention comprises, from top to bottom, a first non-woven fabric, a first waterproof layer, a second non-woven fabric, an adhesive layer, a third non-woven fabric, a second waterproof layer, and a fourth non-woven fabric, wherein the first waterproof layer and the second waterproof layer independently comprise the following raw materials in parts by weight: 50-60 parts of polyethylene, 30-40 parts of thermoplastic polyolefin, 10-15 parts of polyaryletherketone, 15-20 parts of filler, 1-2 parts of antioxidant, and 2-3 parts of compatibilizer; The adhesive layer comprises the following raw materials in parts by weight: 40-50 parts of SEBS, 15-20 parts of chloroprene rubber, 10-15 parts of terpene resin, 10-20 parts of naphthenic oil, and 8-12 parts of 3,4-dichloro-benzene pentadecanoic acid-modified polyester fiber; The amount of 3,4-dichloro-benzenepentadecanoic acid added to the raw materials of the 3,4-dichloro-benzenepentadecanoic acid-modified polyester fiber is 5% to 8% of the mass of the polyester fiber.

2. A double-layer pre-composite double-sided composite polymer waterproof membrane according to claim 1, characterized in that: The polyaryletherketone consists of a first polyaryletherketone and a second polyaryletherketone, and the first polyaryletherketone and the second polyaryletherketone have different melt indices.

3. The double-layer pre-composite double-sided composite polymer waterproof membrane according to claim 2, characterized in that: The melt index of the first polyaryletherketone is 55 g / 10 min, and the melt index of the second polyaryletherketone is 9 g / 10 min.

4. The double-layer pre-composite double-sided composite polymer waterproof membrane according to claim 3, characterized in that: The mass ratio of the first polyaryletherketone to the second polyaryletherketone is 1-3:

5.

5. The double-layer pre-composite double-sided composite polymer waterproof membrane according to claim 1, characterized in that: The first non-woven fabric, the second non-woven fabric, the third non-woven fabric and the fourth non-woven fabric are all high-strength polypropylene non-woven fabrics.

6. The double-layer pre-composite double-sided composite polymer waterproof membrane according to claim 1, characterized in that: The filler includes one or more of light calcium carbonate, kaolin, and talc.

7. The double-layer pre-composite double-sided composite polymer waterproof membrane according to claim 1, characterized in that: The antioxidant includes one or more of antioxidant 264 , antioxidant 1010 , and antioxidant 168 .

8. The method for preparing a double-layer pre-compounded double-sided composite polymer waterproof membrane according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, mixing the raw materials of the first waterproof layer and the second waterproof layer respectively, and then extruding and molding to obtain a first waterproof layer sheet and a second waterproof layer sheet; S2, mixing and melting the bonding layer raw materials to obtain an adhesive; S3. The first non-woven fabric, the first waterproof layer, the second non-woven fabric, the adhesive layer, the third non-woven fabric, the second waterproof layer, and the fourth non-woven fabric are stacked in order from top to bottom, and then hot-pressed to obtain a double-layer pre-composite double-sided composite polymer waterproof membrane.

Images