High-strength double-lap-joint double-polymer film-based waterproof coiled material and preparation method therefor

Abstract

The present invention relates to the technical field of waterproof coiled materials, and provides a high-strength double-lap-joint double-polymer film-based waterproof coiled material, sequentially comprising, from top to bottom, an anti-adhesive protective layer, a first permeable reaction adhesive layer, a first polymer film base layer, a second permeable reaction adhesive layer, a second polymer film base layer, a third permeable reaction adhesive layer, and an isolation film. The raw materials of the first permeable reaction adhesive layer, the second permeable reaction adhesive layer, and the third permeable reaction adhesive layer each independently comprise the following components in parts by mass: 30-40 parts of asphalt, 1-3 parts of carboxylated styrene-butadiene rubber, 5-15 parts of SBS, 2-5 parts of a tackifier, 3-8 parts of a plasticizer, 0.2-1 part of an antioxidant, 30-50 parts of a filler, and 3-12 parts of a cyanoaniline compound. By means of the described technical solution, the problem in the prior art that the stretching performance of double-lap-joint polymer waterproof coiled materials is poor is solved.

Description

High-strength double-lap double-polymer membrane-based waterproofing roll and preparation method thereof Technical Field

[0001] The present invention relates to the technical field of waterproof coiled materials, and in particular to a high-strength double-lapped double-polymer membrane-based waterproof coiled material and a preparation method thereof. Background Art

[0002] Waterproof membranes are flexible waterproof materials with a certain width and thickness that can be rolled into a roll. They are currently the most widely used type of waterproof material. They provide waterproofing by being firmly adhered to the surface of a structure (such as a roof). Therefore, engineering requirements for waterproof membranes require sufficient water resistance and flexibility, as well as mechanical strength, elongation, and fracture resistance, as well as temperature and atmospheric stability to adapt to the environment.

[0003] With the development of society, newly developed double-lap polymer waterproofing membranes have become increasingly popular due to their excellent water resistance and impermeability. For example, Chinese invention patent application number 202310735680.0 discloses a double-lap polymer waterproofing membrane comprising an anti-adhesive protective layer, a first osmotic reactive adhesive layer, a first polymer membrane base, a second osmotic reactive adhesive layer, a second polymer membrane base, a third osmotic reactive adhesive layer, and a separator. The osmotic reactive adhesive layer acts as an adhesive between the layers, and its performance directly affects the tensile properties of the membrane.

[0004] Summary of the Invention

[0005] The present invention provides a high-strength double-lap double polymer membrane-based waterproofing coiled material and a preparation method thereof, which solves the problem of poor tensile performance of the double-lap polymer waterproofing coiled material in the related art.

[0006] The technical solutions of the present invention are as follows:

[0007] The high-strength double-lap double polymer membrane-based waterproof membrane comprises, from top to bottom, an anti-sticking protective layer, a first permeable reactive adhesive layer, a first polymer membrane base layer, a second permeable reactive adhesive layer, a second polymer membrane base layer, a third permeable reactive adhesive layer, and an isolation membrane. The raw materials of the first permeable reactive adhesive layer, the second permeable reactive adhesive layer, and the third permeable reactive adhesive layer independently include the following components in parts by mass: 30-40 parts of asphalt, 1-3 parts of carboxylated styrene-butadiene rubber, 5-15 parts of SBS, 2-5 parts of tackifier, 3-8 parts of plasticizer, 0.2-1 part of antioxidant, 30-50 parts of filler, and 3-12 parts of cyanoaniline compounds.

[0008] SBS is a styrene-butadiene-styrene block copolymer.

[0009] As a further technical solution, the cyanoaniline compound includes one or both of 2,6-dicyanoaniline and 2-cyanoaniline.

[0010] As a further technical solution, the plasticizer includes one or both of dibutyl phthalate and dioctyl phthalate;

[0011] The tackifier includes one or both of petroleum resin and rosin resin;

[0012] The antioxidant includes one or both of antioxidant 1010 and antioxidant 168;

[0013] The filler includes one or both of talc powder and heavy calcium powder.

[0014] As a further technical solution, the mass ratio of the plasticizer to the cyanoaniline compound is 1:1-2.

[0015] The present invention limits the mass ratio of the plasticizer to the cyanoaniline compound to 1:1-2, thereby further improving the tensile properties of the waterproof membrane.

[0016] As a further technical solution, the first polymer film base layer and the second polymer film base layer are each independently a polyethylene terephthalate film base layer.

[0017] As a further technical solution, the anti-sticking protective layer includes one of a PE film layer and a mineral sand layer.

[0018] As a further technical solution, when the anti-sticking protective layer is a mineral sand layer, the material of the mineral sand layer is one of quartz sand, mullite sand, and sintered sand.

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

[0020] The present invention also provides a method for preparing a high-strength double-lap double-polymer membrane-based waterproofing membrane, comprising the following steps:

[0021] S1. Prepare an anti-sticking protective layer, a first polymer film base layer, a second polymer film base layer, and a release film in order from top to bottom;

[0022] S2. Heat the asphalt to 180-190°C, mix it evenly with carboxylated styrene-butadiene rubber, SBS, tackifier, plasticizer, antioxidant, filler and cyanoaniline compound, and then apply it between the anti-sticking protective layer and the first polymer membrane base layer, between the first polymer membrane base layer and the second polymer membrane base layer, and between the second polymer membrane base layer and the isolation membrane, respectively, and calender to obtain the first permeation reaction adhesive layer, the second permeation reaction adhesive layer and the third permeation reaction adhesive layer in turn to obtain a high-strength double-lap double polymer membrane-based waterproof membrane.

[0023] As a further technical solution, in step S2, the mixture is mixed evenly and then cooled to 140-150°C.

[0024] The working principle and beneficial effects of the present invention are:

[0025] 1. The present invention uses asphalt, carboxylated styrene-butadiene rubber, SBS, tackifier, plasticizer, antioxidant, filler, and cyanoaniline compounds as raw materials for the penetration reaction adhesive layer, thereby improving the tensile properties of the waterproof membrane.

[0026] 2. The cyanoaniline compounds of the present invention improve the tensile properties of the waterproof membrane. This is because the cyanoaniline compounds react not only with the plasticizer but also with the polyethylene terephthalate (PET) substrate of the polymer membrane, thereby enhancing the tensile properties of the waterproof membrane. Furthermore, the cyanoaniline compounds provide high interlayer bonding strength, preventing separation of the adhesive layer from the polymer membrane during stretching. DETAILED DESCRIPTION

[0027] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention, in conjunction with the embodiments of the present invention. It should be understood that the embodiments described herein are merely a portion of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0028] In the following examples and comparative examples, the carboxylated styrene butadiene rubber is an ultrafine powder of carboxylated styrene butadiene rubber, brand Narpow VP201, purchased from Beijing Beihuayan Company, affiliated to Beijing Research Institute of Chemical Industry of Sinopec Corporation;

[0029] The talc powder contains 60 wt% silicon dioxide and 15 wt% magnesium oxide, and has a particle size of 400 mesh.

[0030] Heavy calcium carbonate powder is a 400-mesh heavy calcium carbonate powder.

[0031] Example 1

[0032] S1, prepare 0.15mm thick PE film as anti-sticking protective layer, 0.3mm thick polyethylene terephthalate film as first polymer film base, 0.3mm thick polyethylene terephthalate film as second polymer film base, 0.15mm thick PE film as isolation film;

[0033] S2. Heat 35 parts of 90# asphalt to 185°C, mix evenly with 2 parts of carboxylated styrene-butadiene rubber, 10 parts of SBS 4452, 3.5 parts of petroleum resin C9, 5 parts of dibutyl phthalate, 0.6 parts of antioxidant 1010, 40 parts of talc and 3 parts of 2-cyanoaniline, cool to 145°C and introduce into between calendering rollers through a pump, and cover between the anti-sticking protective layer and the first polymer film base layer, between the first polymer film base layer and the second polymer film base layer, and between the second polymer film base layer and the isolation film respectively, and calender to obtain the first permeation reaction adhesive layer, the second permeation reaction adhesive layer and the third permeation reaction adhesive layer in sequence to obtain a high-strength double-lap double polymer membrane-based waterproof membrane.

[0034] Example 2

[0035] S1, prepare quartz sand as an anti-sticking protective layer, 0.1mm thick polyethylene terephthalate film as a first polymer film base, 0.5mm thick polyethylene terephthalate film as a second polymer film base, and 0.15mm thick PE film as a separator;

[0036] S2. Heat 30 parts of 90# asphalt to 180°C, mix evenly with 1 part of carboxylated styrene-butadiene rubber, 5 parts of SBS 4452, 2 parts of 424 rosin resin, 3 parts of dioctyl phthalate, 0.2 parts of antioxidant 168, 30 parts of heavy calcium powder and 3 parts of 2-cyanoaniline, cool to 140°C, and introduce into between calendering rollers through a pump to cover between the anti-sticking protective layer and the first polymer film base layer, between the first polymer film base layer and the second polymer film base layer, and between the second polymer film base layer and the isolation film, respectively, and calender to obtain the first osmotic reaction adhesive layer, the second osmotic reaction adhesive layer and the third osmotic reaction adhesive layer in sequence to obtain a high-strength double-lap double polymer membrane-based waterproof membrane, and embed quartz sand on the surface of the first osmotic reaction adhesive layer by calendering to form an anti-sticking protective layer.

[0037] Example 3

[0038] S1, prepare sintered sand as an anti-sticking protective layer, 0.5 mm thick polyethylene terephthalate film as a first polymer film base, 0.1 mm thick polyethylene terephthalate film as a second polymer film base, and 0.15 mm thick PE film as a separator;

[0039] S2. Heat 40 parts of 90# asphalt to 190°C, mix evenly with 3 parts of carboxylated styrene-butadiene rubber, 15 parts of SBS 4452, 2 parts of 424 rosin resin, 3 parts of petroleum resin C9, 3 parts of dioctyl phthalate, 5 parts of dibutyl phthalate, 0.2 parts of antioxidant 168, 0.8 parts of antioxidant 1010, 30 parts of heavy calcium powder, 20 parts of talc, and 3 parts of 2-cyanoaniline, cool to 150°C, and introduce the mixture into the calendering rollers through a pump to cover the anti-sticking protective layer between the anti-sticking protective layer and the first polymer film base layer, between the first polymer film base layer and the second polymer film base layer, and between the second polymer film base layer and the isolation film, and calender to obtain the first osmotic reaction adhesive layer, the second osmotic reaction adhesive layer, and the third osmotic reaction adhesive layer in sequence to obtain a high-strength double-lap double polymer membrane-based waterproof membrane, and embed sintered sand on the surface of the first osmotic reaction adhesive layer by calendering to form an anti-sticking protective layer.

[0040] Example 4

[0041] The difference from Example 1 is:

[0042] S2. Heat 35 parts of 90# asphalt to 185°C, mix evenly with 2 parts of carboxylated styrene-butadiene rubber, 10 parts of SBS 4452, 3.5 parts of petroleum resin C9, 5 parts of dibutyl phthalate, 0.6 parts of antioxidant 1010, 40 parts of talc and 5 parts of 2-cyanoaniline, cool to 145°C and introduce into between calendering rollers through a pump, and cover respectively between the anti-sticking protective layer and the first polymer film base layer, between the first polymer film base layer and the second polymer film base layer, and between the second polymer film base layer and the isolation film, and calender to obtain the first permeation reaction adhesive layer, the second permeation reaction adhesive layer and the third permeation reaction adhesive layer in sequence to obtain a high-strength double-lap double polymer membrane-based waterproof membrane.

[0043] Example 5

[0044] The difference from Example 1 is:

[0045] S2. Heat 35 parts of 90# asphalt to 185°C, mix evenly with 2 parts of carboxylated styrene-butadiene rubber, 10 parts of SBS 4452, 3.5 parts of petroleum resin C9, 5 parts of dibutyl phthalate, 0.6 parts of antioxidant 1010, 40 parts of talc and 7 parts of 2-cyanoaniline, cool to 145°C and introduce into between calendering rollers through a pump, and cover between the anti-sticking protective layer and the first polymer film base layer, between the first polymer film base layer and the second polymer film base layer, and between the second polymer film base layer and the isolation film respectively, and calender to obtain the first permeation reaction adhesive layer, the second permeation reaction adhesive layer and the third permeation reaction adhesive layer in sequence to obtain a high-strength double-lap double polymer membrane-based waterproof membrane.

[0046] Example 6

[0047] The difference from Example 1 is:

[0048] S2. Heat 35 parts of 90# asphalt to 185°C, mix evenly with 2 parts of carboxylated styrene-butadiene rubber, 10 parts of SBS 4452, 3.5 parts of petroleum resin C9, 5 parts of dibutyl phthalate, 0.6 parts of antioxidant 1010, 40 parts of talc and 10 parts of 2-cyanoaniline, cool to 145°C and introduce into between calendering rollers through a pump, and cover respectively between the anti-sticking protective layer and the first polymer film base layer, between the first polymer film base layer and the second polymer film base layer, and between the second polymer film base layer and the isolation film, and calender to obtain the first permeation reaction adhesive layer, the second permeation reaction adhesive layer and the third permeation reaction adhesive layer in sequence to obtain a high-strength double-lap double polymer membrane-based waterproof membrane.

[0049] Example 7

[0050] The difference from Example 1 is:

[0051] S2. Heat 35 parts of 90# asphalt to 185°C, mix evenly with 2 parts of carboxylated styrene-butadiene rubber, 10 parts of SBS 4452, 3.5 parts of petroleum resin C9, 5 parts of dibutyl phthalate, 0.6 parts of antioxidant 1010, 40 parts of talc and 12 parts of 2-cyanoaniline, cool to 145°C and introduce into between calendering rollers through a pump, and cover respectively between the anti-sticking protective layer and the first polymer film base layer, between the first polymer film base layer and the second polymer film base layer, and between the second polymer film base layer and the isolation film, and calender to obtain the first permeation reaction adhesive layer, the second permeation reaction adhesive layer and the third permeation reaction adhesive layer in sequence to obtain a high-strength double-lap double polymer membrane-based waterproof membrane.

[0052] Example 8

[0053] The difference from Example 1 is:

[0054] S2. Heat 35 parts of 90# asphalt to 185°C, mix evenly with 2 parts of carboxylated styrene-butadiene rubber, 10 parts of SBS 4452, 3.5 parts of petroleum resin C9, 5 parts of dibutyl phthalate, 0.6 parts of antioxidant 1010, 40 parts of talc and 7 parts of 2,6-dicyanoaniline, cool to 145°C and introduce into between calendering rollers through a pump, and cover between the anti-sticking protective layer and the first polymer film base layer, between the first polymer film base layer and the second polymer film base layer, and between the second polymer film base layer and the isolation film respectively, and calender to obtain the first permeation reaction adhesive layer, the second permeation reaction adhesive layer and the third permeation reaction adhesive layer in sequence to obtain a high-strength double-lap double polymer membrane-based waterproof membrane.

[0055] Comparative Example 1

[0056] The only difference from Example 1 is that 2-cyanoaniline was not added.

[0057] The waterproof membranes obtained in Examples 1 to 8 and Comparative Example 1 were tested for tensile properties according to the method in GB / T 35467-2017 “Wet-laid waterproof membranes”. The test results are recorded in Table 1.

[0058] Table 1 Tensile properties of waterproof membrane

[0059] As can be seen from Table 1, the maximum longitudinal tensile force of the waterproof membrane provided by the present invention is above 1192 N / 50 mm, and the maximum transverse tensile force is above 1270 N / 50 mm, and has good tensile properties.

[0060] Compared with Comparative Example 1, Example 1 adds a cyanoaniline compound, while Comparative Example 1 does not add a cyanoaniline compound. The maximum longitudinal tensile force and the maximum transverse tensile force of the waterproof membrane obtained in Example 1 are higher than those in Comparative Example 1, indicating that the addition of cyanoaniline compounds can improve the tensile properties of the waterproof membrane.

[0061] Compared with Examples 4 to 7, Example 1 shows that the mass ratio of the plasticizer to the cyanoaniline compound in Example 1 is 5:3, the mass ratio of the plasticizer to the cyanoaniline compound in Example 4 is 1:1, the mass ratio of the plasticizer to the cyanoaniline compound in Example 5 is 5:7, the mass ratio of the plasticizer to the cyanoaniline compound in Example 6 is 1:2, and the mass ratio of the plasticizer to the cyanoaniline compound in Example 7 is 5:12. The maximum longitudinal and transverse tensile forces of the waterproof membranes obtained in Examples 4 to 6 are higher than those in Example 1 and Example 7. This indicates that when the mass ratio of the plasticizer to the cyanoaniline compound is 1:1 to 2, the tensile properties of the waterproof membrane can be further improved.

[0062] The present invention conducted various performance tests on the waterproof membrane obtained in Example 1, and the reference test methods are recorded in Table 2. The test results are recorded in Table 3.

[0063] Table 2 Test items and test methods

[0064] Table 3 Performance of waterproof membrane

[0065] 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. High-strength double-lap double polymer membrane-based waterproof membrane, which includes, from top to bottom, an anti-adhesive protective layer, a first permeable reactive adhesive layer, a first polymer membrane base layer, a second permeable reactive adhesive layer, a second polymer membrane base layer, a third permeable reactive adhesive layer, and a separator, characterized in that: The raw materials of the first permeable reactive adhesive layer, the second permeable reactive adhesive layer and the third permeable reactive adhesive layer independently include the following components in parts by mass: 30 to 40 parts of asphalt, 1 to 3 parts of carboxylated styrene-butadiene rubber, 5 to 15 parts of SBS, 2 to 5 parts of tackifier, 3 to 8 parts of plasticizer, 0.2 to 1 part of antioxidant, 30 to 50 parts of filler, and 3 to 12 parts of cyanoaniline compounds.

2. The high-strength double-lap double polymer membrane-based waterproofing membrane according to claim 1, characterized in that: The cyanoaniline compound includes one or both of 2,6-dicyanoaniline and 2-cyanoaniline.

3. The high-strength double-lap double polymer membrane-based waterproofing membrane according to claim 1, characterized in that: The plasticizer includes one or both of dibutyl phthalate and dioctyl phthalate; The tackifier includes one or both of petroleum resin and rosin resin; The antioxidant includes one or both of antioxidant 1010 and antioxidant 168; The filler includes one or both of talc powder and heavy calcium powder.

4. The high-strength double-lapped double polymer membrane-based waterproofing membrane according to claim 3, characterized in that: The mass ratio of the plasticizer to the cyanoaniline compound is 1:1-2.

5. The high-strength double-lapped double polymer membrane-based waterproofing membrane according to claim 1, characterized in that: The first polymer film base layer and the second polymer film base layer are each independently a polyethylene terephthalate film base layer.

6. The high-strength double-lapped double polymer membrane-based waterproofing membrane according to claim 1, characterized in that: The anti-sticking protective layer includes one of a PE film layer and a mineral sand layer.

7. The high-strength double-lapped double polymer membrane-based waterproofing membrane according to claim 6, characterized in that: When the anti-sticking protective layer is a mineral sand layer, the material of the mineral sand layer is one of quartz sand, mullite sand and sintered sand.

8. The high-strength double-lapped double polymer membrane-based waterproofing membrane according to claim 1, characterized in that: The isolation film includes one of a PP film and a PE film.

9. The method for preparing a high-strength double-lapped double polymer membrane-based waterproofing membrane according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Prepare an anti-sticking protective layer, a first polymer film base layer, a second polymer film base layer, and a release film in order from top to bottom; S2. Heat the asphalt to 180-190°C, mix it evenly with carboxylated styrene-butadiene rubber, SBS, tackifier, plasticizer, antioxidant, filler and cyanoaniline compound, and then apply it between the anti-sticking protective layer and the first polymer membrane base layer, between the first polymer membrane base layer and the second polymer membrane base layer, and between the second polymer membrane base layer and the isolation membrane, respectively, and calender to obtain the first permeation reaction adhesive layer, the second permeation reaction adhesive layer and the third permeation reaction adhesive layer in turn to obtain a high-strength double-lap double polymer membrane-based waterproof membrane.

10. The method for preparing the high-strength double-lapped double polymer membrane-based waterproofing membrane according to claim 9, characterized in that: After the mixture is uniformly mixed in step S2, the temperature is lowered to 140-150°C.

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