Organic aerogel waterproofing membrane and preparation method and application thereof

Abstract

The application relates to the technical field of waterproof coiled materials, and discloses an organic aerogel waterproof coiled material and a preparation method and application thereof. The waterproof coiled material comprises an organic aerogel layer, and a first glue layer and a second glue layer arranged on the upper and lower surfaces of the organic aerogel layer respectively; wherein the first glue layer and the second glue layer are both formed by glue layer glue; the glue layer glue for forming the first glue layer and the second glue layer is the same or different, and is independently selected from any one of glue layer glue A; based on the total weight of the glue layer glue A, the glue layer glue A contains 20-30 wt% of naphthenic oil, 25-35 wt% of modified rubber, 40-46 wt% of petroleum resin, 0.5-1.2 wt% of an antioxidant, and 0.8-3.5 wt% of an additive; the organic aerogel waterproof coiled material provided by the application has a low thermal conductivity, can reduce heat conduction, and is greatly lightened in weight, thereby providing convenience for coiled material transportation and construction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waterproofing membranes, in particular to an organic aerogel waterproofing membrane and a preparation method and application thereof. BACKGROUND

[0002] In the traditional waterproofing field, asphalt waterproofing membranes are a common building material used for roofing and basement waterproofing of buildings. With the acceleration of urbanization and the continuous development of building technology, the market for asphalt waterproofing membranes is also showing a trend of continuous expansion, mainly applied in residential buildings, commercial buildings, engineering buildings and other fields. Asphalt waterproofing membranes can be divided into two main types: SBS modified asphalt membranes and APP modified asphalt membranes. Among them, SBS modified asphalt membranes have good flexibility and tensile strength, and are widely used in roofing and basement waterproofing fields; APP modified asphalt membranes have higher high-temperature resistance and are suitable for areas with greater climate changes.

[0003] During the production process of asphalt-based waterproofing membranes, harmful gases and waste materials may be generated, which can pollute the environment if not properly treated. Therefore, in today's advocacy of green and sustainable development, the increasing awareness of environmental protection also puts higher requirements on the new waterproofing membrane industry, promoting the development of environmentally friendly products and sustainable development of asphalt, so that the waterproofing membrane market is facing some challenges and opportunities. Therefore, in the face of such fierce market competition, enterprises need to continuously improve technology and product quality to gain a competitive advantage.

[0004] For example, CN104108214A discloses a PP antibacterial waterproofing membrane for waterproofing lining with antibacterial properties and economy, which comprises a lower fiber cloth, a waterproof lower pad, a middle fiber cloth, an antibacterial waterproof upper pad and a release film arranged in layers. The waterproof lower pad is prepared from a first composition comprising high molecular resin PE, EPDM, EVA, PP and filler material, and the antibacterial waterproof upper pad is prepared from a second composition comprising PP resin, thermoplastic elastomer resin and antibacterial material. The waterproof lower pad has good waterproofing performance and antibacterial properties, but its thermal insulation performance is poor, and the weight of the membrane is large, the construction difficulty and transportation cost are high, and the overall load on the building after construction is large. SUMMARY

[0005] The purpose of the present application is to solve the problems of low thermal insulation performance, poor heat preservation ability and large weight of the waterproofing membrane in the prior art.

[0006] To achieve the above-mentioned purpose, the first aspect of the present application provides an organic aerogel waterproofing membrane, which comprises an organic aerogel layer, and a first glue layer and a second glue layer respectively arranged on the upper and lower surfaces of the organic aerogel layer.

[0007] The first adhesive layer and the second adhesive layer are both formed by adhesive layer material; the adhesive layer material forming the first adhesive layer and the second adhesive layer is the same or different, and each is independently selected from any one of adhesive layer material A; based on the total weight of the adhesive layer material A, the adhesive layer material A contains 20-30 wt% of naphthenic oil, 25-35 wt% of modified rubber, 40-46 wt% of petroleum resin, 0.5-1.2 wt% of antioxidant, and 0.8-3.5 wt% of auxiliary agent;

[0008] In the adhesive layer material A, the modified rubber is a combination of SIS and SBS with a content weight ratio of 1-2.5:1.

[0009] The average thickness of the organic aerogel layer is 1-4 mm.

[0010] The second aspect of the present application provides a method for preparing the organic aerogel waterproof roll material of the first aspect, which comprises:

[0011] (1) applying adhesive layer material I forming the first adhesive layer to the surface of the first separation layer to form intermediate I, and

[0012] applying adhesive layer material II forming the second adhesive layer to the surface of the second separation layer to form intermediate II;

[0013] (2) bonding any one side of the organic aerogel layer to the surface of the first adhesive layer of the intermediate I, and

[0014] bonding the other side of the organic aerogel layer to the surface of the second adhesive layer of the intermediate II to obtain the organic aerogel waterproof roll material;

[0015] In step (1), the adhesive layer material I and the adhesive layer material II are the same or different, and each is independently selected from any one of adhesive layer material A; based on the total weight of the adhesive layer material A, the adhesive layer material A contains 20-30 wt% of naphthenic oil, 25-35 wt% of modified rubber, 40-46 wt% of petroleum resin, 0.5-1.2 wt% of antioxidant, and 0.8-3.5 wt% of auxiliary agent.

[0016] In the adhesive layer material A, the modified rubber is a combination of SIS and SBS with a content weight ratio of 1-2.5:1.

[0017] In step (2), the average thickness of the organic aerogel layer is 1-4 mm.

[0018] The third aspect of the present application provides the application of the organic aerogel waterproof roll material of the first aspect in the field of building waterproof materials.

[0019] By the technical scheme, the present application has at least the following advantages:

[0020] (1) The organic aerogel waterproof roll material has a low thermal conductivity, thereby having good heat insulation performance, effectively reducing the exchange of indoor and outdoor heat, and effectively reducing the energy loss. Moreover, the waterproof roll material has strong heat preservation capacity, can block the conduction of external high temperature to the indoor in summer, and can keep the indoor temperature stable in winter, thereby improving the indoor comfort.

[0021] (2) Compared with the traditional TPO roll material, the organic aerogel waterproof roll material has a low thermal conductivity, plays a role in reducing heat conduction, and greatly reduces the weight, thereby saving the transportation cost of the roll material and providing great convenience for construction.

[0022] (3) The organic aerogel waterproof roll material can play a waterproof role when applied to the waterproof field.

[0023] (4) The organic aerogel waterproof roll material has great improvement in tensile strength and elongation, and has good mechanical properties. DETAILED DESCRIPTION

[0024] The endpoints of the ranges and any values disclosed herein are not limited to the precise values recited as the exact dimensions are not critical to the present application. The endpoints of the ranges and any numerical values should be interpreted as approximately including values near the reported values. For values which are less than one, multiple, e.g., 1, can be presented as from the lower limit of the range, or to the upper limit of the range. The ranges include the whole range located between any reported numerical limits, or to the limits of the ranges. These numerical values are reported as exactly as possible. Any numerical value, however, can only be approximate. It is possible, for example, that numerical values containing small significant digits, e.g., 1, can not be the intended, but instead merely accurate within typical measuring and manufacturing tolerances. At the very least, each numerical value should at least consider measuring and manufacturing tolerances at a minimum level, e.g., 1.

[0025] As described above, the first aspect of the present application provides an organic aerogel waterproof roll material, which comprises an organic aerogel layer, and a first glue layer and a second glue layer arranged on the upper and lower surfaces of the organic aerogel layer, respectively.

[0026] The first glue layer and the second glue layer are both formed by glue layer glue, and the glue layer glue forming the first glue layer and the second glue layer is the same or different, and each is independently selected from any one of glue layer glue A; the glue layer glue A contains 20-30 wt% of naphthenic oil, 25-35 wt% of modified rubber, 40-46 wt% of petroleum resin, 0.5-1.2 wt% of antioxidant, and 0.8-3.5 wt% of auxiliary, based on the total weight of the glue layer glue A.

[0027] In the glue layer glue A, the modified rubber is a combination of SIS and SBS with a content weight ratio of 1-2.5:1.

[0028] The average thickness of the organic aerogel layer is 1-4 mm.

[0029] SIS represents a styrene-isoprene-styrene triblock copolymer, and SBS represents a styrene-butadiene-styrene triblock copolymer.

[0030] According to a preferred embodiment, the content of the styrene structural unit in the SIS is 10-20 wt%, and the content of the isoprene structural unit is 70-90 wt%, based on the total weight of the SIS.

[0031] According to a preferred embodiment, the content of the styrene structural unit in the SBS is 20-30 wt%, and the content of the butadiene structural unit is 40-60 wt%, based on the total weight of the SBS.

[0032] Further preferably, the number average molecular weight of the SBS is 1-4 million.

[0033] Preferably, the density of the thermoplastic polyurethane foaming layer is 90-110 kg / m 3 , the compressive strength is 0.8-1.5 MPa, and the water absorption is ≤2.5%.

[0034] More preferably, the tensile strength of the thermoplastic polyurethane foaming layer is 0.8-1.5 MPa, and the elongation at break is 200-500%.

[0035] Further preferably, the thermal dimensional change rate of the thermoplastic polyurethane foaming layer within 24 h at 80℃ is ≤5%, and the Shore A hardness is 16-25 degrees.

[0036] Preferably, the petroleum resin is a C5 resin and / or a C9 resin.

[0037] Preferably, the average thickness of the first adhesive layer is 0.25-0.4 mm, and the average thickness of the second adhesive layer is 0.4-0.6 mm.

[0038] Preferably, the organic aerogel layer contains at least one of a thermoplastic polyurethane foaming layer, a crosslinked polyethylene foaming layer, a crosslinked polypropylene foaming layer, and an ethylene-propylene-diene rubber foaming layer.

[0039] More preferably, the organic aerogel layer contains a thermoplastic polyurethane foaming layer, a crosslinked polyethylene foaming layer, and an ethylene-propylene-diene rubber foaming layer arranged in sequence, and the surface of the thermoplastic polyurethane foaming layer is in contact with the first adhesive layer. The inventor has found that in this preferred case, the waterproofing membrane provided by the present application has higher thermal insulation performance and better heat preservation capacity.

[0040] Further preferably, the thickness ratio of the thermoplastic polyurethane foamed layer, the crosslinked polyethylene foamed layer and the ethylene-propylene-diene rubber foamed layer is 1:0.5-1.5:0.5-1. The inventors have found that in this preferred case, the technical solution provided by the present application can obtain a waterproofing membrane with higher heat insulation performance and better heat preservation capacity.

[0041] Preferably, the Shore A hardness of the crosslinked polyethylene foamed layer and the crosslinked polypropylene foamed layer is independently 22-26 degrees. In this preferred case, the technical solution provided by the present application can obtain a waterproofing membrane with higher heat insulation performance and better heat preservation capacity.

[0042] According to one preferred embodiment, the density of the crosslinked polyethylene foamed layer is 28-40 kg / m 3 , the tensile strength is 1.5-3 MPa, the elongation at break is 140-180%, the water absorption is ≤5%, the tear strength is 0.8-1.8 kN / m, and the thermal dimensional change rate is ≤5%.

[0043] Preferably, the compressive strength of the ethylene-propylene-diene rubber foamed layer is 20-28 kPa, and the Shore C hardness is 8-12 degrees.

[0044] More preferably, the density of the ethylene-propylene-diene rubber foamed layer is 90-120 kg / m 3 , the tensile strength is 0.15-0.4 MPa, the elongation at break is 100-200%, the water absorption is ≤5%, the tear strength is 1.5-2.0 kN / m, and the thermal dimensional change rate is ≤5%.

[0045] Preferably, the weight average molecular weight of the petroleum resin is 1500-2000.

[0046] Preferably, the auxiliary agent is a combination of a light stabilizer and a crosslinking agent in a content weight ratio of 0.5-1.5:1.

[0047] Preferably, the light stabilizer is selected from light stabilizer UV-329 and / or light stabilizer UV-119.

[0048] According to one preferred embodiment, the crosslinking agent is crosslinking agent KH560.

[0049] Preferably, the waterproofing membrane further comprises a first isolation layer arranged on the surface of the first adhesive layer and / or a second isolation layer arranged on the surface of the second adhesive layer.

[0050] Preferably, the waterproofing membrane further comprises a first isolation layer arranged on the surface of the first adhesive layer and a second isolation layer arranged on the surface of the second adhesive layer, and the first isolation layer is a non-release film and the second isolation layer is a release film.

[0051] Preferably, the average thickness of the first and second separation layers is independently 0.02-0.1 mm.

[0052] According to a preferred embodiment, the average thickness of the organic aerogel layer is 1.5-3 mm.

[0053] Preferably, the non-release film is a non-silicon polymer weather-resistant film and / or an aluminum foil film.

[0054] Preferably, the release film is selected from at least one of a PET silicone oil film, a PE silicone oil film and an MPET silicone oil film.

[0055] The present application does not have special requirements for the specific type of naphthenic oil, and the specific types of naphthenic oil are exemplarily provided in the following of the present application, which should not be understood as a limitation of the present application.

[0056] Preferably, the antioxidant is selected from at least one of antioxidant 1010, antioxidant 1076 and antioxidant 168.

[0057] It should be noted that antioxidant 1010 refers to "tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester", antioxidant 1076 refers to "β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid n-octadecyl ester", and antioxidant 168 refers to "tris(2,4-di-tert-butylphenyl) phosphite".

[0058] As described above, the second aspect of the present application provides a method for preparing the organic aerogel waterproofing membrane of the first aspect, the method comprising:

[0059] (1) applying the first adhesive layer forming adhesive compound I to the surface of the first separation layer to form intermediate I, and

[0060] applying the second adhesive layer forming adhesive compound II to the surface of the second separation layer to form intermediate II;

[0061] (2) adhering one side of the organic aerogel layer to the surface of the first adhesive layer of the intermediate I, and

[0062] adhering the other side of the organic aerogel layer to the surface of the second adhesive layer of the intermediate II to obtain the organic aerogel waterproofing membrane;

[0063] In step (1), the rubber layer compound I and the rubber layer compound II are the same or different, each independently selected from any one of the rubber layer compound A; the rubber layer compound A contains, based on the total weight of the rubber layer compound A: 20-30wt% of naphthenic oil, 25-35wt% of modified rubber, 40-46wt% of petroleum resin, 0.5-1.2wt% of antioxidant, 0.8-3.5wt% of auxiliary agent;

[0064] In the rubber layer compound A, the modified rubber is a combination of SIS and SBS with a content weight ratio of 1-2.5:1.

[0065] In step (2), the average thickness of the organic aerogel layer is 1-4mm.

[0066] Preferably, in step (1), the amount of the rubber layer compound I and the rubber layer compound II satisfies: the average thickness of the first rubber layer is 0.25-0.4mm, and the average thickness of the second rubber layer is 0.4-0.6mm.

[0067] Preferably, in step (1), the rubber layer compound I and the rubber layer compound II are the same, and are prepared by a method comprising the following steps:

[0068] S1: first mixing naphthenic oil, modified rubber, petroleum resin and antioxidant to obtain a mixture I;

[0069] S2: second mixing the mixture I and auxiliary agent to obtain a mixture II;

[0070] S3: discharging and forming the mixture II to obtain the rubber layer compound.

[0071] Preferably, the conditions of the first mixing and the second mixing each independently include: vacuum degree of -0.1 to -0.02Mpa, and temperature of 120-140℃.

[0072] Preferably, the time of the first mixing is 2-3h; and the time of the second mixing is 0.3-1.2h.

[0073] Preferably, in step S3, the temperature of the discharging and forming is 80-120℃.

[0074] Preferably, the first mixing, the second mixing and the third mixing are all carried out in a reaction kettle.

[0075] As described above, the third aspect of the present application provides the use of the organic aerogel waterproofing membrane of the first aspect in the field of building waterproofing materials.

[0076] The present application will be described in detail below by examples.

[0077] In the following examples, unless otherwise specified, the instruments and materials involved are conventional instruments, reagents, materials, etc., which are available through regular commercial channels.

[0078] Organic aerogel layer:

[0079] Thermoplastic polyurethane foamed layer (TPU-1): density 93 kg / m 3 , compression strength 1.0 MPa, water absorption 1.2%, tensile strength 1.0 MPa, elongation at break 300%, thermal dimensional change rate within 24 h at 80°C ±0.17%, Shore A hardness 18 degrees.

[0080] Thermoplastic polyurethane foamed layer (TPU-2): density 105 kg / m 3 , compression strength 1.25 MPa, water absorption 0.5%, tensile strength 1.4 MPa, elongation at break 400%, thermal dimensional change rate within 24 h at 80°C ±0.12%, Shore A hardness 23 degrees.

[0081] Crosslinked polyethylene foamed layer (XPE-1), Shore A hardness 24 degrees, density 35.7 kg / m 3 , tensile strength 2.3 MPa, elongation at break 150%, water absorption 0.3%, tear strength 1.27 kN / m, thermal dimensional change rate ±4%.

[0082] Crosslinked polyethylene foamed layer (XPE-2), Shore A hardness 22 degrees, density 30.1 kg / m 3 , tensile strength 1.8 MPa, elongation at break 140%, water absorption 0.4%, tear strength 0.88 kN / m, thermal dimensional change rate ±5%.

[0083] Ethylene propylene diene rubber foamed layer (EPDM-1), compression strength 25 kPa, Shore C hardness 12 degrees, density 115 kg / m 3 , tensile strength 0.3 MPa, elongation at break 150%, water absorption 0.5%, tear strength 2.0 kN / m, thermal dimensional change rate ±4%.

[0084] Ethylene propylene diene rubber foamed layer (EPDM-2), compression strength 30 kPa, Shore C hardness 21 degrees, density 150 kg / m 3 , tensile strength 0.45 MPa, elongation at break 150%, water absorption 0.5%, tear strength 2.5 kN / m, thermal dimensional change rate ±3%.

[0085] First glue layer and second glue layer:

[0086] Naphthenic oil: purchased from Dongguan Beishan Lubricating Oil Co., Ltd., brand KN4006.

[0087] SIS: purchased from Baling Petrochemical Co., Ltd., brand 1105; the content of styrene structural unit in SIS is 15wt%, and the content of isoprene structural unit is 85wt% based on the total weight of SIS.

[0088] SBS: purchased from Baling Petrochemical Co., Ltd., brand 411; the content of styrene structural unit in SBS is 20-30wt%, and the content of butadiene structural unit is 40-60wt% based on the total weight of SBS; the number average molecular weight of SBS is 1-4 million.

[0089] Carbon five resin: purchased from Baling Petrochemical Co., Ltd., weight average molecular weight is 1500-2000.

[0090] Antioxidant 1010: purchased from BASF Chemical Co., Ltd.

[0091] Light stabilizer UV-329: purchased from BASF Chemical Co., Ltd.

[0092] Crosslinking agent KH560: purchased from BASF Chemical Co., Ltd.

[0093] First isolation layer:

[0094] Non-silicon polymer weather-resistant film: purchased from Shanghai Upers Material Technology Co., Ltd.

[0095] Second isolation layer:

[0096] PE silicone oil film: purchased from Cangzhou Zhaoyang Paper Plastic Packaging Co., Ltd.

[0097] In the following examples, 1wt% represents 7g; the thickness of the organic aerogel layer is 1.5mm.

[0098] Preparation example 1: preparation of adhesive layer compound I and adhesive layer compound II

[0099] S1: 25wt% naphthenic oil, 19wt% SIS, 10wt% SBS, 43wt% carbon five resin and 1wt% antioxidant 1010 were sequentially added into a preheated reaction kettle at 130℃, and stirring was started; after the temperature reached 130℃, constant temperature stirring was carried out under a vacuum degree of-0.07Mpa for 2.5h to carry out the first mixing, and mixture I was obtained;

[0100] S2: After the constant temperature of S1 is over, open the reactor, and then add 1wt% of light stabilizer UV-329 and 1wt% of crosslinking agent KH560 in sequence. After the feeding is completed, start the stirring, and continue the constant temperature stirring at 130°C and a vacuum degree of -0.06Mpa for 0.5h to perform the second mixing, so as to obtain the mixture II;

[0101] S3: After the constant temperature of S2 is over, cool to 100°C, and then perform the discharging and molding to obtain the rubber layer compound I (hereinafter referred to as "Z-I") and the rubber layer compound II (hereinafter referred to as "Z-II").

[0102] Comparative Preparation Example 1

[0103] According to the similar method of Preparation Example 1, except that the weight ratio of the use amount of SIS and SBS is adjusted to 0.38:1 while keeping the total use amount of SIS and SBS unchanged, and the rest is the same, the rubber layer compound I (hereinafter referred to as "DZ-I") and the rubber layer compound II (hereinafter referred to as "DZ-II") are obtained.

[0104] Example 1

[0105] (1) The Z-I (0.25mm in thickness) for forming the first rubber layer is coated on the surface of the first isolation layer (non-silicon polymer weather-resistant film) by means of the blade coating to form the intermediate I, and

[0106] The Z-II (0.5mm in thickness) for forming the second rubber layer is coated on the surface of the second isolation layer (PE silicone oil film) by means of the blade coating to form the intermediate II.

[0107] (2) The organic aerogel layer (a thermoplastic polyurethane foaming layer, a crosslinked polyethylene foaming layer and a ternary ethylene-propylene rubber foaming layer arranged in sequence) is attached to the surface of the first rubber layer of the intermediate I by means of the roller, and

[0108] The other surface of the organic aerogel layer is attached to the surface of the second rubber layer of the intermediate II by means of the roller to complete the compounding and winding, so as to obtain the organic aerogel waterproof roll material.

[0109] The material and process parameters of the present example are shown in Table 1.

[0110] In the absence of special instructions, the rest of the examples are carried out by using the same process as Example 1, except that the materials and process parameters used are different, and the specific parameters are shown in Table 1.

[0111] Table 1

[0112]

[0113] Example 4

[0114] According to the similar method of Example 1, except that the average thickness of the organic aerogel layer is kept unchanged, the thickness ratio of the thermoplastic polyurethane foamed layer, the crosslinked polyethylene foamed layer and the EPDM foamed layer is adjusted to 1:0.2:2, and the rest is the same, an organic aerogel waterproof roll material is obtained.

[0115] Example 5

[0116] According to the similar method of Example 1, except that in step (2), the average thickness of the organic aerogel layer is kept unchanged, and the organic aerogel layer is only a thermoplastic polyurethane foamed layer, and the rest is the same, an organic aerogel waterproof roll material is obtained.

[0117] Example 6

[0118] According to the similar method of Example 1, except that in step (2), the same thickness of EPDM-2 is used to replace EPDM-1, and the rest is the same, an organic aerogel waterproof roll material is obtained.

[0119] Comparative Example 1

[0120] According to the similar method of Example 1, except that in step (1), DZ-I is used to replace Z-I, and DZ-II is used to replace Z-II, and the rest is the same, an organic aerogel waterproof roll material is obtained.

[0121] Comparative Example 2

[0122] According to the similar method of Example 1, except that in step (2), the average thickness of the organic aerogel layer is 6 mm, and the rest is the same, an organic aerogel waterproof roll material is obtained.

[0123] Comparative Example 3

[0124] According to the similar method of Example 1, except that in step (2), the same thickness of TPO sheet (i.e. thermoplastic polyolefin) is used to replace the organic aerogel layer, and the rest is the same, an organic aerogel waterproof roll material is obtained.

[0125] Test Example

[0126] The organic aerogel waterproof roll materials obtained in each example are subjected to performance determination, including thermal insulation performance, heat preservation performance, waterproof performance and mechanical performance, and the specific results are shown in Table 2.

[0127] Among them, the test methods involved are as follows:

[0128] Thermal insulation performance, thermal insulation performance: the thermal conductivity of the waterproof roll material is an important index for measuring its thermal insulation performance, the lower the thermal conductivity, the weaker the heat conduction capacity of the material, the better the thermal insulation effect. Therefore, selecting a roll material with low thermal conductivity can effectively prevent heat transfer; the thermal insulation performance in the technical scheme is tested by HFM 446Lambda Small heat flow method thermal conductivity tester, and the test conditions are: the average temperature is 25 DEG C, and the temperature difference between the upper and lower plates is 20 DEG C.

[0129] Waterproof performance: test by waterproof roll material impermeable instrument, test conditions: pressure 0.2 MPa, time 120 min.

[0130] Mechanical properties: test by universal tensile testing machine instrument, test conditions: speed 100 mm / min, clamp spacing 100 mm.

[0131] Table 2

[0132]

[0133] From the above results, it can be seen that the organic aerogel waterproof roll material provided by the application has good thermal insulation performance, compared with the traditional TPO roll material, not only has a lower thermal conductivity, plays a role in reducing heat conduction, and greatly reduces the weight, greatly provides convenience for the transportation cost and construction of the roll material.

[0134] The above describes the preferred embodiments of the application, but the application is not limited thereto. Within the technical concept of the application, various simple modifications can be made to the technical solutions of the application, including the combination of various technical features in any other suitable manner, and these simple modifications and combinations should also be considered as disclosed by the application, and all belong to the protection scope of the application.

Claims

1. An organic aerogel waterproof membrane, characterized in that, The waterproof membrane includes an organic aerogel layer and a first adhesive layer and a second adhesive layer respectively disposed on the upper and lower surfaces of the organic aerogel layer; the organic aerogel layer contains a thermoplastic polyurethane foam layer, a cross-linked polyethylene foam layer and a EPDM rubber foam layer stacked in sequence, and the surface of the thermoplastic polyurethane foam layer is in contact with the first adhesive layer. Wherein, both the first adhesive layer and the second adhesive layer are formed of adhesive layer compounds; the adhesive layer compounds forming the first adhesive layer and the second adhesive layer may be the same or different, and each is independently selected from any one of adhesive layer compounds A; based on the total weight of the adhesive layer compound A, the adhesive layer compound A contains: 20-30wt% naphthenic oil, 25-35wt% modified rubber, 40-46wt% petroleum resin, 0.5-1.2wt% antioxidant, and 0.8-3.5wt% additives; In the adhesive layer compound A, the modified rubber is a combination of SIS and SBS in a weight ratio of 1-2.5:1; The average thickness of the organic aerogel layer is 1-4 mm; the thickness ratio of the thermoplastic polyurethane foam layer, the cross-linked polyethylene foam layer, and the EPDM rubber foam layer is 1:0.5-1.5:0.5-1; the density of the thermoplastic polyurethane foam layer is 90-110 kg / m³. 3 The compressive strength is 0.8-1.5 MPa, and the water absorption rate is ≤2.5%; the Shore A hardness of the cross-linked polyethylene foam layer and the cross-linked polypropylene foam layer are each independently 22-26 degrees; the compressive strength of the EPDM rubber foam layer is 20-28 kPa, and the Shore C hardness is 8-12 degrees.

2. The waterproof membrane according to claim 1, wherein, The weight-average molecular weight of the petroleum resin is 1500-2000. And / or, the additive is a combination of a light stabilizer and a crosslinking agent in a weight ratio of 0.5-1.5:

1.

3. The waterproof membrane according to claim 1, wherein, The waterproof membrane further includes a first isolation layer disposed on the surface of the first adhesive layer and / or a second isolation layer disposed on the surface of the second adhesive layer; And / or, the waterproof membrane further includes a first release layer disposed on the surface of the first adhesive layer and a second release layer disposed on the surface of the second adhesive layer, wherein the first release layer is a non-release film and the second release layer is a release film; And / or, the non-release film is a non-silicone polymer weather-resistant film and / or an aluminum foil film; And / or, the release film is selected from at least one of PET silicone film, PE silicone film and MPET silicone film.

4. A method for preparing the organic aerogel waterproof membrane according to any one of claims 1-3, characterized in that, The method includes: (1) The adhesive material I forming the first adhesive layer is coated onto the surface of the first release layer to form intermediate I, and The adhesive material II, which forms the second adhesive layer, is coated onto the surface of the second release layer to form intermediate II; (2) Adhere any side of the organic aerogel layer to the surface of the first adhesive layer of the intermediate I, and The other side of the organic aerogel layer is attached to the surface of the second adhesive layer of the intermediate II to obtain an organic aerogel waterproof membrane; In step (1), the adhesive layer material I and the adhesive layer material II may be the same or different, and each is independently selected from any one of the adhesive layer materials A; based on the total weight of the adhesive layer material A, the adhesive layer material A contains: 20-30wt% naphthenic oil, 25-35wt% modified rubber, 40-46wt% petroleum resin, 0.5-1.2wt% antioxidant, and 0.8-3.5wt% additives; In the adhesive layer compound A, the modified rubber is a combination of SIS and SBS in a weight ratio of 1-2.5:1; In step (2), the average thickness of the organic aerogel layer is 1-4 mm.

5. The method according to claim 4, wherein, In step (1), the amounts of adhesive layer I and adhesive layer II are satisfied as follows: the average thickness of the first adhesive layer is 0.25-0.4 mm, and the average thickness of the second adhesive layer is 0.4-0.6 mm.

6. The method according to claim 4 or 5, wherein, In step (1), the adhesive layer material I and the adhesive layer material II are the same, both prepared by a method including the following steps: S1: Naphthenic oil, modified rubber, petroleum resin and antioxidant are mixed in the first step to obtain mixture I; S2: Mix the mixture I and the additives a second time to obtain mixture II; S3: The mixture II is discharged and molded to obtain the adhesive layer.

7. The method according to claim 6, wherein, The conditions for the first mixing and the second mixing each independently include: a vacuum degree of -0.1 to -0.02 MPa and a temperature of 120-140°C; And / or, the first mixing time is 2-3 hours; the second mixing time is 0.3-1.2 hours; And / or, the temperature of the material discharge molding is 80-120℃.

8. The application of the organic aerogel waterproof membrane according to any one of claims 1-3 in the field of building waterproof materials.

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