Asphalt coating material, preparation method thereof and double-base asphalt waterproof coiled material

Abstract

The invention relates to the technical field of building waterproof materials, and provides an asphalt coating material, a preparation method thereof and a double-base asphalt waterproof coiled material, the asphalt coating material comprises the following raw materials by weight: 20-70 parts of petroleum asphalt, 5-30 parts of a flexibilizer, 5-30 parts of rubber, 8-11 parts of polyphenylene sulfide, 5-40 parts of a reinforcing material, 5-50 parts of biological asphalt, and 1-2 parts of zinc methacrylate; the raw materials of the reinforcing material comprise calcium sulfate whiskers and a reinforcing auxiliary agent, and the reinforcing auxiliary agent comprises 6-maleimidohexanoic acid. By means of the technical scheme, the problem that in the prior art, the peeling strength of waterproof roll joints is poor is solved.

Description

Technical Field

[0001] The invention relates to the technical field of building waterproof materials, and in particular to an asphalt coating material and a preparation method thereof and a double-ribbed asphalt waterproofing coiled material. Background Art

[0002] In the field of building waterproofing engineering, waterproofing membrane is an extremely important waterproof material. Modern building structures are becoming more and more diverse, and the comprehensive performance requirements for waterproofing membranes are becoming higher and higher. Some special building parts, such as workshops in industrial plants and roofs of underground parking lots, require waterproofing membranes to have good waterproofing performance and durability. However, in the prior art, single-layer waterproofing membranes have problems such as insufficient waterproofing performance and susceptibility to damage in practical applications. In order to improve the waterproofing performance and durability of waterproofing membranes, multi-layer composite waterproofing membranes came into being, but the seam peeling strength of multi-layer composite waterproofing membranes is poor. Therefore, improving the seam peeling strength of waterproofing membranes is a problem that needs to be solved at present. Summary of the invention

[0003] The invention provides an asphalt coating material and a preparation method thereof and a double-ribbed asphalt waterproofing coiled material, which solves the problem of poor peeling strength of the joints of the waterproofing coiled materials in the related art.

[0004] The technical solution of the present invention is as follows: The present invention proposes an asphalt coating, comprising the following raw materials in parts by weight: 20-70 parts of petroleum asphalt, 5-30 parts of toughening agent, 5-30 parts of rubber, 8-11 parts of polyphenylene sulfide, 5-40 parts of reinforcing material, 5-50 parts of bio-asphalt, and 1-2 parts of zinc methacrylate; the raw materials of the reinforcing material include calcium sulfate whiskers and a reinforcing aid, and the reinforcing aid includes 6-maleimidocaproic acid.

[0005] As a further technical solution, the added amount of the reinforcing agent is 3% to 5% of the mass of the calcium sulfate whisker.

[0006] As a further technical solution, the reinforcing auxiliary agent also includes aniline-2,4-disulfonic acid.

[0007] As a further technical solution, the mass ratio of the 6-maleimidocaproic acid to aniline-2,4-disulfonic acid is 7:1-3.

[0008] In the present invention, the seam peeling strength of the waterproof membrane is further improved by limiting the mass ratio of 6-maleimidocaproic acid to aniline-2,4-disulfonic acid to 7:1-3.

[0009] As a further technical solution, the preparation method of the reinforcing material comprises the following steps: adding a reinforcing aid into methanol, then adding calcium sulfate whiskers for mixing, and drying to obtain the reinforcing material.

[0010] As a further technical solution, the mixing temperature is 35-45° C., and the mixing time is 2-4 hours.

[0011] As a further technical solution, the polyphenylene sulfide consists of a first polyphenylene sulfide and a second polyphenylene sulfide, and the first polyphenylene sulfide and the second polyphenylene sulfide have different melt viscosities.

[0012] As a further technical solution, the first polyphenylene sulfide is heated at 310°C for 1000s -1 The melt viscosity of the second polyphenylene sulfide is 240Pa·s at 310°C and 1000s -1 The melt viscosity is 345 Pa·s.

[0013] As a further technical solution, the mass ratio of the first polyphenylene sulfide to the second polyphenylene sulfide is 2:3-7.

[0014] In the present invention, by limiting the mass ratio of the first polyphenylene sulfide to the second polyphenylene sulfide to 2:3-7, the heat resistance of the asphalt coating can be further improved.

[0015] As a further technical solution, the toughening agent includes one or more of SBS, SIS, and SEBS.

[0016] In the present invention, SBS is a styrene-butadiene-styrene block copolymer, SIS is a styrene-isoprene-styrene block copolymer, and SEBS is a hydrogenated styrene-butadiene copolymer.

[0017] As a further technical solution, the petroleum asphalt includes one or more of 110# petroleum asphalt, 150# petroleum asphalt, and 200# petroleum asphalt.

[0018] As a further technical solution, the source of the bio-asphalt is one or both of straw and wood.

[0019] As a further technical solution, the rubber includes one or more of butyl rubber, chloroprene rubber, and styrene-butadiene rubber.

[0020] The present invention also provides a method for preparing an asphalt coating material, comprising the following steps: The asphalt coating material is obtained by mixing 20-70 parts of petroleum asphalt, 5-30 parts of toughening agent, 5-30 parts of rubber, 8-11 parts of polyphenylene sulfide, 5-40 parts of modified calcium sulfate whisker, 5-50 parts of bio-asphalt and 1-2 parts of zinc methacrylate.

[0021] The present invention also proposes a double-base asphalt waterproofing roll material, which includes an upper roll material and a lower roll material from top to bottom, wherein the upper roll material includes a first self-adhesive asphalt layer I, a first base, and a first self-adhesive asphalt layer II from top to bottom, and the lower roll material includes a second self-adhesive asphalt layer I, a second base, and a second self-adhesive asphalt layer II from top to bottom; the raw materials of the first self-adhesive asphalt layer I and the raw materials of the first self-adhesive asphalt layer II each independently include the asphalt coating material.

[0022] As a further technical solution, the raw materials of the second self-adhesive asphalt layer I are the same as the raw materials of the second self-adhesive asphalt layer II, and each independently includes the following components in parts by weight: 50-65 parts of base asphalt, 10-15 parts of SBS, 3-8 parts of SIS, 1-10 parts of SBR, 0.5-1 parts of cross-linking agent, and 20-30 parts of filler.

[0023] In the present invention, SBR is thermoplastic styrene butadiene rubber.

[0024] As a further technical solution, the filler includes one or more of light calcium carbonate, talcum powder, and mica powder.

[0025] As a further technical solution, the base asphalt includes one or more of 70# base asphalt, 90# base asphalt, and 100# base asphalt.

[0026] As a further technical solution, the cross-linking agent includes one or more of trimethoxysilane, aluminum isopropoxide, and acrylic acid.

[0027] As a further technical solution, the first base is alkali-free glass fiber cloth, and the raw material of the second base is one or both of polyethylene terephthalate and polyethylene.

[0028] As a further technical solution, the thickness of the upper coil and the lower coil is independently 1.2-1.5 mm.

[0029] The present invention also provides a method for preparing a double-layer waterproofing membrane, comprising the following steps: S1, applying an asphalt coating material on both sides of the first base respectively to form a first self-adhesive asphalt layer I and a first self-adhesive asphalt layer II to obtain an upper coiled material; S2, after mixing 50-65 parts of base asphalt, 10-15 parts of SBS, 3-8 parts of SIS, 1-10 parts of SBR, 0.5-1 parts of cross-linking agent, 10-15 parts of reinforcing agent, and 20-30 parts of filler, respectively apply them on both sides of the second tire base to form a second self-adhesive asphalt layer I and a second self-adhesive asphalt layer II, and obtain a lower layer coiled material; S3. Compound the upper layer of the roll material and the lower layer of the roll material, and compact them to obtain a double-layer waterproof roll material.

[0030] As a further technical solution, in step S3, when compounding, one of the adjacent sides of the upper layer roll material and the lower layer roll material is left with an edge that is not compounded, and the other side is compounded, and an isolation film is set on the outer side of the left edge to obtain a double-layer waterproof roll material with a bite-type overlap interface.

[0031] As a further technical solution, the length of the edge is 8 to 10 cm.

[0032] The working principle and beneficial effects of the present invention are: The invention provides an asphalt coating material, which takes petroleum asphalt as a base material, and improves the joint peeling strength of the asphalt coating material by adding a reinforcing material composed of calcium sulfate whiskers and a reinforcing additive. The asphalt coating material is applied to waterproof membrane, thereby solving the problem of poor joint peeling strength of the waterproof membrane. 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0034] In the following embodiments and comparative examples: SBS, model: D1102 JSZ; SIS, model: YH-1209; SEBS, model: G1701; SBR, model: 1500E; butyl rubber, model: IIR1751; chloroprene rubber, model: SN232; 1130A64 HD9100 polyphenylene sulfide, melt viscosity (310℃, 1000s -1 ): 240Pa·s; 6165A6 HD9100 polyphenylene sulfide, melt viscosity (310℃, 1000s -1 ): 345Pa·s; calcium sulfate whiskers, diameter 1~8μm, length 30~200μm; alkali-free glass fiber cloth, model: EWR600; light calcium carbonate, particle size: 500 mesh; bio-asphalt, specific gravity: 94 / 96, purchased from Hebei Richangsheng Chemical Co., Ltd.; high-density polyethylene base, thickness: 0.01mm; polyethylene terephthalate base, thickness: 0.02mm; polyethylene base, thickness: 0.03mm.

[0035] Example 1 A method for preparing a double-layer waterproofing membrane comprises the following steps: S1. Mix 20 parts of 110# petroleum asphalt, 5 parts of SBS, 5 parts of butyl rubber, 8 parts of polyphenylene sulfide 1130A64 HD9100, 5 parts of reinforcing material, 5 parts of bio-asphalt, and 1 part of zinc methacrylate, and apply them on both sides of the alkali-free glass fiber cloth respectively to form the first self-adhesive asphalt layer I and the first self-adhesive asphalt layer II to obtain the upper coiled material with a thickness of 1.2 mm; S2, 50 parts of 70# asphalt, 10 parts of SBS, 3 parts of SIS, 1 part of SBR, 0.5 parts of trimethoxysilane, and 20 parts of light calcium carbonate were mixed, and the mixture was coated on both sides of a high-density polyethylene tire base with a thickness of 0.01 mm, respectively, to form a second self-adhesive asphalt layer I and a second self-adhesive asphalt layer II, to obtain a lower layer coiled material with a thickness of 1.2 mm; S3, compounding the upper layer coiled material and the lower layer coiled material, and compacting them to obtain a double-layer waterproof coiled material; The preparation method of the reinforcing material comprises the following steps: adding 1.2 g of 6-maleimidocaproic acid into 400 mL of methanol, then adding 40 g of calcium sulfate whisker, heating to 35° C., stirring for 4 hours, and drying to obtain the reinforcing material.

[0036] Example 2 A method for preparing a double-layer waterproofing membrane comprises the following steps: S1. Mix 40 parts of 150# petroleum asphalt, 18 parts of SIS, 17 parts of chloroprene rubber, 9 parts of polyphenylene sulfide 1130A64 HD9100, 22 parts of reinforcing material, 27 parts of bio-asphalt, and 1 part of zinc methacrylate, and apply them on both sides of the alkali-free glass fiber cloth to form the first self-adhesive asphalt layer I and the first self-adhesive asphalt layer II, and obtain the upper coiled material with a thickness of 1.2 mm; S2, 57 parts of 90# asphalt, 12 parts of SBS, 5 parts of SIS, 6 parts of SBR, 0.7 parts of aluminum isopropylate, and 25 parts of talcum powder were mixed, and coated on both sides of a polyethylene terephthalate base with a thickness of 0.02 mm, respectively, to form a second self-adhesive asphalt layer I and a second self-adhesive asphalt layer II, to obtain a lower layer coiled material with a thickness of 1.2 mm; S3, compounding the upper layer coiled material and the lower layer coiled material, and compacting them to obtain a double-layer waterproof coiled material; The preparation method of the reinforcing material comprises the following steps: adding 1.6 g of 6-maleimidocaproic acid into 400 mL of methanol, then adding 40 g of calcium sulfate whisker, heating to 40° C., stirring for 3 hours, and drying to obtain the reinforcing material.

[0037] Example 3 A method for preparing a double-layer waterproofing membrane comprises the following steps: S1. Mix 70 parts of 200# petroleum asphalt, 30 parts of SEBS, 30 parts of styrene-butadiene rubber, 11 parts of polyphenylene sulfide 1130A64HD9100, 40 parts of reinforcing material, 50 parts of bio-asphalt, and 2 parts of zinc methacrylate, and apply them on both sides of the alkali-free glass fiber cloth to form the first self-adhesive asphalt layer I and the first self-adhesive asphalt layer II, and obtain the upper coiled material with a thickness of 1.5 mm; S2, 65 parts of 100# asphalt, 15 parts of SBS, 8 parts of SIS, 10 parts of SBR, 1 part of acrylic acid, and 30 parts of mica powder were mixed, and coated on both sides of a polyethylene base with a thickness of 0.03 mm, respectively, to form a second self-adhesive asphalt layer I and a second self-adhesive asphalt layer II, to obtain a lower layer coiled material with a thickness of 1.5 mm; S3, compounding the upper layer coiled material and the lower layer coiled material, and compacting them to obtain a double-layer waterproof coiled material; The preparation method of the reinforcing material comprises the following steps: adding 2g of 6-maleimidocaproic acid into 400mL of methanol, then adding 40g of calcium sulfate whisker, heating to 45°C, stirring for 2h, and drying to obtain the reinforcing material.

[0038] Example 4 The present embodiment is different from the embodiment 1 only in that the method for preparing the reinforcing material comprises the following steps: adding 0.6 g of 6-maleimidocaproic acid and 0.6 g of aniline-2,4-disulfonic acid to 400 mL of methanol, then adding 40 g of calcium sulfate whiskers, heating to 35° C., stirring for 4 hours, and drying to obtain the reinforcing material.

[0039] Example 5 The only difference between this embodiment and embodiment 4 is that the added amount of 6-maleimidocaproic acid is 1.08 g, and the added amount of aniline-2,4-disulfonic acid is 0.12 g.

[0040] Example 6 The only difference between this embodiment and embodiment 4 is that the added amount of 6-maleimidocaproic acid is 1.05 g, and the added amount of aniline-2,4-disulfonic acid is 0.15 g.

[0041] Example 7 The only difference between this embodiment and embodiment 4 is that the added amount of 6-maleimidocaproic acid is 0.84 g, and the added amount of aniline-2,4-disulfonic acid is 0.36 g.

[0042] Example 8 The only difference between this embodiment and embodiment 1 is that polyphenylene sulfide 1130A64 HD9100 is replaced by an equal amount of polyphenylene sulfide 6165A6 HD9100.

[0043] Example 9 The only difference between this embodiment and embodiment 1 is that polyphenylene sulfide 1130A64 HD9100 is replaced by equal amounts of polyphenylene sulfide 1130A64 HD9100 and polyphenylene sulfide 6165A6 HD9100 in a mass ratio of 1:1.

[0044] Example 10 The only difference between this embodiment and embodiment 9 is that the mass ratio of polyphenylene sulfide 1130A64 HD9100 to polyphenylene sulfide 6165A6 HD9100 is 1:5.

[0045] Embodiment 11 The only difference between this embodiment and embodiment 9 is that the mass ratio of polyphenylene sulfide 1130A64 HD9100 to polyphenylene sulfide 6165A6 HD9100 is 2:3.

[0046] Example 12 The only difference between this embodiment and embodiment 9 is that the mass ratio of polyphenylene sulfide 1130A64 HD9100 to polyphenylene sulfide 6165A6 HD9100 is 2:7.

[0047] Comparative Example 1 The only difference between this comparative example and Example 1 is that the reinforcing material is replaced by an equal amount of calcium sulfate whiskers.

[0048] Experimental Example 1 The peeling strength of the upper layer of the double-layer waterproof membrane prepared in Examples 1 to 7 and Comparative Example 1 was tested according to the method in GB / T328.20-2007 "Test methods for building waterproof membranes Part 20: Peeling performance of bitumen waterproof membrane joints", and the test results are shown in Table 1.

[0049] Table 1 Test results of double-layer waterproof membrane joint peeling strength

[0050] Compared with Comparative Example 1, the joint peeling strength of the upper layer of the double-tire-based waterproof membrane prepared in Examples 1 to 7 is higher than that of Comparative Example 1, indicating that adding a reinforcing material composed of calcium sulfate whiskers and a reinforcing agent to the asphalt coating can improve the joint peeling strength of the double-tire-based waterproof membrane.

[0051] Experimental Example 2 The heat resistance of the upper layer of the double-layer waterproof membrane prepared in Example 1 and Examples 8 to 12 was tested according to the test method in GB 18242-2008 "Elastomer modified asphalt waterproof membrane", and the test results are shown in Table 2.

[0052] Table 2 Test results of heat resistance of double-layer waterproof membrane

[0053] Compared with Example 1 and Examples 8 to 10, the heat resistance of the upper layer of the double-tire-based waterproof membrane prepared in Examples 11 to 12 is higher than that in Examples 1 and 8 to 10, indicating that the heat resistance of the double-tire-based waterproof membrane can be improved by adding polyphenylene sulfide of different melt viscosities to the upper layer and limiting the mass ratio of polyphenylene sulfide 1130A64 HD9100 to polyphenylene sulfide 6165A6 HD9100 to 2:3 to 7.

[0054] Experimental Example 3 The upper layer of the double-base waterproof membrane prepared in Example 1 was tested for tension, water impermeability, low-temperature flexibility, and oil permeability according to the method in GB 18242-2008 "Elastomer modified asphalt waterproof membrane". The test results are shown in Table 3.

[0055] Table 3 Performance test results of the upper layer of double-layer waterproof membrane

[0056] It can be seen from Table 3 that the double-layer waterproof membrane prepared in the present invention has good tensile strength, water impermeability, low-temperature flexibility, and oil permeability, and meets the use standards.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An asphalt coating material, characterized in that: The raw materials include the following components in parts by weight: 20-70 parts of petroleum asphalt, 5-30 parts of toughening agent, 5-30 parts of rubber, 8-11 parts of polyphenylene sulfide, 5-40 parts of reinforcing material, 5-50 parts of bio-asphalt, and 1-2 parts of zinc methacrylate; the raw materials of the reinforcing material include calcium sulfate whiskers and reinforcing aids, and the reinforcing aids include 6-maleimidocaproic acid.

2. An asphalt coating material according to claim 1, characterized in that: The added amount of the reinforcing agent is 3% to 5% of the mass of the calcium sulfate whisker.

3. The asphalt coating material according to claim 1, characterized in that: The reinforcing aid further comprises aniline-2,4-disulfonic acid.

4. An asphalt coating material according to claim 3, characterized in that: The mass ratio of the 6-maleimidocaproic acid to aniline-2,4-disulfonic acid is 7:1-3. 5 . The asphalt coating according to claim 1 , wherein the polyphenylene sulfide consists of a first polyphenylene sulfide and a second polyphenylene sulfide, and the first polyphenylene sulfide and the second polyphenylene sulfide have different melt viscosities.

6. An asphalt coating material according to claim 5, characterized in that: The first polyphenylene sulfide is heated at 310°C for 1000 seconds -1 The melt viscosity of the second polyphenylene sulfide is 240Pa·s at 310°C and 1000s -1 The melt viscosity is 345 Pa·s.

7. The asphalt coating material according to claim 5, characterized in that: The mass ratio of the first polyphenylene sulfide to the second polyphenylene sulfide is 2:3-7.

8. The method for preparing an asphalt coating material according to any one of claims 1 to 7, characterized in that: The following steps are involved: The asphalt coating material is obtained by mixing 20-70 parts of petroleum asphalt, 5-30 parts of toughening agent, 5-30 parts of rubber, 8-11 parts of polyphenylene sulfide, 5-40 parts of modified calcium sulfate whisker, 5-50 parts of bio-asphalt and 1-2 parts of zinc methacrylate.

9. A double-layer asphalt waterproofing membrane, characterized in that: From top to bottom, it includes an upper coil and a lower coil, the upper coil includes a first self-adhesive asphalt layer I, a first base, and a first self-adhesive asphalt layer II, and the lower coil includes a second self-adhesive asphalt layer I, a second base, and a second self-adhesive asphalt layer II; the raw materials of the first self-adhesive asphalt layer I and the raw materials of the first self-adhesive asphalt layer II each independently include the asphalt coating material described in any one of claims 1 to 7.

10. The double-layer asphalt waterproofing membrane according to claim 9, characterized in that: The raw materials of the second self-adhesive asphalt layer I and the raw materials of the second self-adhesive asphalt layer II independently include the following components in parts by weight: 50-65 parts of base asphalt, 10-15 parts of SBS, 3-8 parts of SIS, 1-10 parts of SBR, 0.5-1 parts of cross-linking agent, and 20-30 parts of filler.

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