Modified asphalt coating composition, modified asphalt coating and method for producing the same, waterproofing membrane

Abstract

The application relates to the field of waterproof materials, and discloses a modified asphalt coating composition, a modified asphalt coating and a preparation method thereof, and a waterproof coiled material, wherein the composition contains a main agent and an auxiliary agent; the main agent comprises base asphalt, solvent oil with an aromatic hydrocarbon content of greater than or equal to 70 wt%, linear SBS, SBR, neodymium-iron-boron magnetic powder, cobalt borylate and styrene-indene resin; the content of the base asphalt is 40-55 wt% based on the total weight of the composition; the content of the solvent oil is 5-10 wt%; the content of the linear SBS is 3-5 wt%; and the content of the SBR is 3-5 wt%. The waterproof coiled material provided by the application is excellent in heat preservation, low-temperature resistance and deformation resistance and is suitable for metal roofs.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of waterproof materials, in particular to a modified asphalt coating composition, a modified asphalt coating and a preparation method thereof, and a waterproof roll material. BACKGROUND

[0002] The existing metal roof waterproofing roll material is a traditional wet-laid waterproof roll material, which is subjected to long-term ultraviolet radiation after roof construction, which can cause the film to fall off, and then the roll material to absorb heat, causing the indoor temperature to rise. At the same time, the existing asphalt roll material mainly relies on rubber materials for modification and adhesion, and the rubber ages after long-term construction exposure, causing the adhesion performance of the roll material to decrease, which can cause the metal roof waterproof roll material to fall off.

[0003] In addition, the existing roll material generally uses SBS, SBR, etc. as a modifier, which can cause performance aging after long-term ultraviolet radiation, and can cause the roll material to crack under low temperature conditions.

[0004] CN116463072A discloses a low-temperature-resistant self-adhesive polymer modified asphalt waterproof roll material, which includes a modified asphalt layer, a base layer, a modified asphalt layer and a separation layer arranged in order from bottom to top; wherein the modified asphalt layer includes the following components by weight: base asphalt 38-42 parts; base oil 10-15 parts; SBS resin 3-6 parts; SBR resin 8-12 parts; high-temperature modifier 3-5 parts; tackifier 8-12 parts; inorganic filler 25-30 parts; low-temperature asphalt modifier 4-6 parts; polyphosphoric acid 2-4 parts; nitrile rubber powder 2.8-4.5 parts; graphene oxide 0.023-0.045 parts; and multi-walled carbon nanotube 0.115-0.225 parts. This scheme utilizes the synergistic effect of multiple raw materials to improve the low-temperature mechanical properties and low-temperature adhesion properties of the waterproof roll material, but is not suitable for metal roofs.

[0005] Therefore, there is an urgent need for a waterproof roll material that has excellent heat preservation, low-temperature resistance and deformation resistance and is suitable for metal roofs to solve this defect condition. SUMMARY

[0006] The purpose of the present application is to overcome the defects of the prior art waterproof roll material suitable for metal roofs, which has poor low-temperature performance and is prone to deformation after long-term construction, causing metal roof leakage.

[0007] To achieve the above-mentioned purpose, the first aspect of the present application provides a modified asphalt coating composition, which contains a main agent and an auxiliary agent, wherein the main agent includes base asphalt, solvent oil with an aromatic hydrocarbon content of ≥70wt%, linear SBS, SBR, neodymium-iron-boron magnetic powder, cobalt boracylate and styrene-indene resin.

[0008] The content of the base bitumen is 40-55wt%, the content of the solvent oil is 5-10wt%, the content of the linear SBS is 3-5wt%, the content of the SBR is 3-5wt%, the content of the neodymium-iron-boron magnetic powder is 2-6wt%, the content of the cobalt borylate is 0.5-3wt%, and the content of the styrene-indene resin is 1-3wt%, based on the total weight of the composition.

[0009] The second aspect of the present application provides a preparation method of a modified bitumen coating material, which is performed by using each component in the composition of the first aspect, and comprises the following steps:

[0010] (1) first mixing the base bitumen and the solvent oil to obtain material A;

[0011] (2) second mixing the material A and the linear SBS to obtain material B;

[0012] (3) third mixing the material B and the SBR to obtain material C;

[0013] (4) fourth mixing the material C and the neodymium-iron-boron magnetic powder, the cobalt borylate and the styrene-indene resin to obtain material D;

[0014] (5) fifth mixing the material D and the auxiliary agent to obtain the modified bitumen coating material.

[0015] The third aspect of the present application provides a modified bitumen coating material prepared by the method of the second aspect.

[0016] The fourth aspect of the present application provides a waterproof roll material, which comprises a reinforcing metal aluminum foil film, a modified bitumen coating material and a separation film arranged in sequence.

[0017] The modified bitumen coating material is the modified bitumen coating material of the third aspect.

[0018] The waterproof material provided by the present application at least has the effects of excellent heat preservation, low temperature resistance and deformation resistance.

[0019] The waterproof roll material provided by the present application can realize long-time physical adhesion with a metal roof. DETAILED DESCRIPTION

[0020] The endpoints of the ranges and any values disclosed herein are not limited to the precise values stated. The endpoints of the ranges and any values should be interpreted as approximately between the stated values and include values near the stated values. For ranges, the endpoints are included between each respective range, and the endpoints and individual points are included in the stated ranges. New ranges can be created by combining the endpoints of the ranges and individual points with each other. These new ranges are to be considered disclosed herein.

[0021] As previously described, the first aspect of the present application provides a composition for a modified asphalt coating, which contains a main agent and an auxiliary agent, wherein the main agent comprises base asphalt, solvent oil with an aromatic hydrocarbon content of ≥ 70 wt%, linear SBS, SBR, neodymium-iron-boron magnetic powder, cobalt borylate, and styrene-indene resin.

[0022] The content of the base asphalt is 40-55 wt% based on the total weight of the composition, the content of the solvent oil is 5-10 wt%, the content of the linear SBS is 3-5 wt%, the content of the SBR is 3-5 wt%, the content of the neodymium-iron-boron magnetic powder is 2-6 wt%, the content of the cobalt borylate is 0.5-3 wt%, and the content of the styrene-indene resin is 1-3 wt%.

[0023] The neodymium-iron-boron magnetic powder and the cobalt borylate are mixed in the present application, and the neodymium-iron-boron magnetic powder is bonded to the metal roof through physical properties, which can exert a strong magnetic effect and increase the bonding effect between the modified asphalt material and the metal roof. At the same time, the cobalt borylate helps the dispersion of the material in the asphalt, because the center of the molecular structure is the boric acid group, which has amphoteric properties, can absorb acidic and basic substances in the glue, has a protective effect on metal, and can effectively protect the metal surface.

[0024] Preferably, the content weight ratio of the neodymium-iron-boron magnetic powder to the cobalt borylate is 2-4:1. The inventors have found that when the content weight ratio of the neodymium-iron-boron magnetic powder to the cobalt borylate is 2-4:1, the modified asphalt coating provided by the present application can provide a longer-term and continuous protective effect on the metal roof.

[0025] Preferably, the content of neodymium in the neodymium-iron-boron magnetic powder is 29%-32.5% wt%, the content of iron is 63.95-68.65 wt%, and the content of boron is 1.1-1.2% wt%.

[0026] Preferably, the average particle diameter of the neodymium-iron-boron magnetic powder is 30-40 μm.

[0027] Preferably, the maximum magnetic energy product of the neodymium-iron-boron magnetic powder is ≥ 45 MGOe.

[0028] Illustratively, the neodymium-iron-boron magnetic powder of the present application can be a product with the trade name of strong magnetic powder purchased from Naiyate Alloy Welding Material Co., Ltd.

[0029] Preferably, the content of cobalt in the cobalt borylate is 21 wt%-23.5 wt%.

[0030] Preferably, the solvent oil is furfural extract oil.

[0031] The furfural extracted oil is a petroleum distillate with aromatic hydrocarbon as the main component.

[0032] Particularly preferably, the content of aromatic hydrocarbon in the furfural extracted oil is 75-90 wt%. The inventors have found that in this preferred case, the modified asphalt coating provided by the present application can significantly more effectively improve the low-temperature performance of the roll material and improve the bonding effect.

[0033] SBS in the present application refers to styrene-butadiene-styrene block copolymer.

[0034] Preferably, the linear SBS in the present application has a density of 0.90-0.98 g / cm3, and a content of styrene structural units of 29-33 wt%.

[0035] SBR in the present application refers to styrene-butadiene rubber, also known as polystyrene butadiene copolymer.

[0036] Preferably, the SBR in the present application has a Mooney viscosity ML(1+4) at 100°C of 60-78, and a content of combined styrene structural units of 20-25 wt%.

[0037] Preferably, the auxiliary agent includes a filler, and the content of the filler is 20-30 wt% based on the total weight of the composition.

[0038] More preferably, the filler is light calcium carbonate with an average particle diameter of 55-85 μm.

[0039] Particularly preferably, the softening point of the styrene-indene resin is 90-105°C. The inventors have found that in this preferred case, the waterproof roll material provided by the present application has the advantages of higher adhesion, better thermal insulation, low-temperature resistance, and deformation resistance.

[0040] Preferably, the base asphalt is at least one of 50# petroleum asphalt, 70# petroleum asphalt, and 90# petroleum asphalt.

[0041] As described above, the second aspect of the present application provides a preparation method of a modified asphalt coating, which is performed by using the components in the composition of the first aspect described above, and includes the following steps:

[0042] (1) First mixing the base asphalt and the solvent oil to obtain material A;

[0043] (2) Second mixing the material A and the linear SBS to obtain material B;

[0044] (3) Third mixing the material B and the SBR to obtain material C;

[0045] (4) the material C is mixed with neodymium-iron-boron magnetic powder, boroacylated cobalt, styrene-indene resin to obtain material D;

[0046] (5) the material D is mixed with an auxiliary to obtain the modified asphalt coating material.

[0047] Preferably, in step (1), the conditions of the first mixing include: the reaction temperature is 150-170℃, and the reaction time is 20-25min.

[0048] Particularly preferably, in step (2), the conditions of the second mixing include: the reaction temperature is 150-170℃, the reaction time is 20-25min, and the stirring rate is 1400-1600rpm.

[0049] Preferably, in step (3), the conditions of the third mixing include: the reaction temperature is 150-170℃, the reaction time is 65-75min, and the stirring rate is 1400-1600rpm.

[0050] Preferably, in step (4), the conditions of the fourth mixing include: the reaction temperature is 180-190℃, the reaction time is 180-190min, and the stirring rate is 1400-1600rpm.

[0051] Further preferably, in step (5), the conditions of the fifth mixing include: the reaction temperature is 180-190℃, the reaction time is 50-60min, and the stirring rate is 1400-1600rpm.

[0052] As described above, the third aspect of the present application provides a modified asphalt coating material prepared by the method of the aforementioned second aspect.

[0053] As described above, the fourth aspect of the present application provides a waterproof roll material, which comprises a reinforced metal aluminum foil film, a modified asphalt coating material, and a release film arranged in sequence.

[0054] The modified asphalt coating material is the modified asphalt coating material of the third aspect.

[0055] Preferably, the reinforced metal aluminum foil film is a composite film of an aluminum foil and a PET film.

[0056] Preferably, the thickness of the PET film in the reinforced metal aluminum foil film is 0.06-0.08mm.

[0057] More preferably, the release film is a PET silicone oil release film.

[0058] The application does not have special requirements for the preparation method of the waterproof roll material, and those skilled in the art can use the commonly known methods in the art to prepare the waterproof roll material by applying the technical features in the first aspect, the second aspect and the third aspect of the application to make the waterproof roll material include the reinforcing metal aluminum foil film, the modified asphalt coating material and the isolation film arranged in sequence. However, in order to obtain better results, the application provides a particularly preferred specific embodiment, and the preparation method of the waterproof roll material includes the following steps:

[0059] (S1) The reinforcing metal aluminum foil film is placed on the shelf and stretched to the discharge port;

[0060] (S2) There are two upper and lower rollers with a spacing of 1-3 mm in front of the discharge port, the modified asphalt coating material of the application is coated on the aluminum foil surface of the reinforcing metal aluminum foil film, and then the upper and lower rollers are compressed, and after the compression is completed, the isolation film is covered;

[0061] (S3) After the rough roll material is cooled in the water tank, the waterproof roll material product can be obtained after being conveyed and rolled by the conveying belt, and the cooling temperature of the water tank is 30-40℃.

[0062] The application will be described in detail below by examples. In the following examples, various instruments and raw materials used without special instructions are commercially available.

[0063] Base asphalt: 70# petroleum asphalt, purchased from Sinopec Co., Ltd. Maoming Branch;

[0064] Solvent oil: furfural extracted oil, purchased from Shandong Taichang Petrochemical Technology Co., Ltd., wherein the aromatic hydrocarbon content is ≥80wt%;

[0065] Linear SBS: purchased from Li Changrong Enterprise Co., Ltd., with a product brand of 3520, a density of 0.94g / cm3, and a content of styrene structural units of 31wt%;

[0066] Star-shaped SBS: purchased from Li Changrong Enterprise Co., Ltd., with a product brand of 3412; the content of styrene structural units is 33wt%;

[0067] SBR-1: purchased from Shandong Haifang Rubber Technology Co., Ltd., with a product brand of HK-B01; the raw rubber Mooney viscosity is ML(1+4)100℃75, and the content of combined styrene structural units is 22.5-24.5wt%.

[0068] SBR-2: purchased from Shandong Haifang Rubber Technology Co., Ltd., with a product brand of HF-040; the raw rubber Mooney viscosity is ML(1+4)100℃55, and the content of combined styrene structural units is 21.5-35wt%.

[0069] Neodymium iron boron magnetic powder: purchased from Naiyate Alloy Welding Material Co., Ltd. in Nangong, with a trade name of metal neodymium iron boron strong magnetic powder N50, and an average particle diameter of 38 μm;

[0070] Borated cobalt: purchased from Sanliang Rubber and Plastic New Material Co., Ltd. in Jiangyin, with a trade name of SL-BCo23 type;

[0071] Reinforced metal aluminum foil film: purchased from Shanghai Youpurs Material Technology Co., Ltd., with a trade name of reinforced metal aluminum foil, and an aluminum foil thickness of 0.9C (1C = 0.01 mm), wherein the thickness of the PET film is 0.08 mm.

[0072] Alloy film: purchased from Shanghai Youpurs Material Technology Co., Ltd., with a trade name of alloy aluminum-plated film, and a thickness of 0.03 mm.

[0073] Combination-1: the content weight ratio of neodymium iron boron magnetic powder and borated cobalt is 3:1;

[0074] Combination-2: the content weight ratio of neodymium iron boron magnetic powder and borated cobalt is 1.5:1;

[0075] Styrene-indene resin: purchased from Qingdao Haijia Auxiliary Co., Ltd., with a softening point of 90-105℃;

[0076] Auxiliary-1: filler, light calcium carbonate, purchased from Shandong Zhongtian Mining Co., Ltd., with a trade name of industrial-grade light calcium carbonate ZT501, and an average particle diameter of 60 μm;

[0077] Auxiliary-2: fly ash, purchased from Shijiazhuang Yuanchen Mineral Products Co., Ltd., with a mesh size of 200.

[0078] Example 1

[0079] This example is used to illustrate the preparation method of the modified asphalt coating material described in the application, which comprises the following steps:

[0080] (1) first mixing base asphalt and solvent oil to obtain material A;

[0081] (2) second mixing the material A with linear SBS to obtain material B;

[0082] (3) third mixing the material B with SBR-1 to obtain material C;

[0083] (4) fourth mixing the material C with combination-1 and styrene-indene resin to obtain material D;

[0084] (5) fifth mixing the material D with auxiliary-1 to obtain the modified asphalt coating material.

[0085] The formulations used are shown in Table 1 and the process parameters used are shown in Table 2.

[0086] Examples 2-3

[0087] The procedure of Example 1 was followed except that the formulations of the components and the process parameters were not the same. The formulations and process parameters are shown in Tables 1 and 2.

[0088] Table 1 (total mass of modified bitumen coating 100 g)

[0089] Example 1 Example 2 Example 3 Modified asphalt coating designation J-1 J-2 J-3 Base asphalt, amount / g 50 52 50 Solvent oil, amount / g 8 8 10 Linear SBS, amount / g 4 3.8 3.9 SBR Type SBR-1 SBR-1 SBR-1 Amount / g 4 4 4.5 Neodymium-iron-boron magnetic powder and cobalt acylate Type Combination-1 Combination-1 Combination-1 Amount / g 7 7 7.5 Styrene-indene resin, amount / g 2 2 2.5 Auxiliary Type Auxiliary-1 Auxiliary-1 Auxiliary-1 Amount / g Balance Balance Balance

[0090] Table 2

[0091] Example 1 Example 2 Example 3 First mixing Temperature / °C 160 150 170 Time / min 20 25 20 Second mixing Temperature / °C 160 150 170 Time / min 20 20 25 Rate / rpm 1500 1400 1600 Third mixing Temperature / °C 160 150 170 Time / min 70 65 75 Rate / rpm 1500 1400 1600 Fourth mixing Temperature / °C 185 180 190 Time / min 180 185 190 Rate / rpm 1500 1400 1600 Fifth mixing Temperature / °C 185 180 190 Time / min 50 55 60 Rate / rpm 1500 1400 1600

[0092] Example 4

[0093] This example was carried out according to the procedure of Example 1 except that in the third mixing process, SBR-2 was used instead of SBR-1 in Example 1, and the amounts of the other substances were the same as in Example 1, to obtain waterproof material J-4.

[0094] Example 5

[0095] This example was carried out according to the procedure of Example 1 except that in the fifth mixing process, additive-2 was used instead of additive-1 in Example 1, and the amounts of the other substances were the same as in Example 1, to obtain waterproof material J-5.

[0096] Example 6

[0097] This example was carried out according to the procedure of Example 1 except that in the fourth mixing process, combination-2 was used instead of combination-1 in Example 1, and the amounts of the other substances were the same as in Example 1, to obtain waterproof material J-6.

[0098] Comparative Example 1

[0099] This comparative example was carried out according to the procedure of Example 1 except that in the second mixing process, 2 g of star-shaped SBS was used instead of 2 g of linear SBS in Example 1, and the amounts of the other substances were the same as in Example 1, to obtain waterproof material DJ-1.

[0100] Comparative Example 2

[0101] This comparative example was carried out according to the procedure of Example 1 except that combination 1 was not used in the fourth mixing process, and the amount of additive was increased to 7 g in the fifth mixing, to obtain waterproof material DJ-2.

[0102] Comparative Example 3

[0103] This example is carried out according to the method of Example 1, except that no styrene-indene resin is used in the fourth mixing process, and the amount of the additive is increased by 2 g in the fifth mixing, to obtain waterproof material DJ-4.

[0104] Preparation Example: Preparation of waterproof roll material using modified asphalt coating

[0105] The preparation method of the waterproof roll material is as follows:

[0106] (S1) The reinforced metal aluminum foil film is placed on the shelf and stretched to the discharge port;

[0107] (S2) There are two upper and lower rollers with a spacing of 2 mm in front of the discharge port. The modified asphalt coating in the example or the comparative example is coated on the aluminum foil surface of the reinforced metal aluminum foil film, and then the upper and lower rollers are compressed. After compression, the isolation film is covered;

[0108] (S3) After the embryonic roll material is cooled in the water tank (where the temperature of the cooling water is 30-40℃), it is conveyed by the conveying belt, wound, and then the waterproof roll material product is obtained.

[0109] Test Example

[0110] According to the national standard GB23441-2009, the partial properties of the waterproof roll material prepared in the preparation example are tested. The test results are shown in Table 3. And the aluminum plate involved in this national standard is replaced by a steel plate, specifically a 1mm thick color steel plate.

[0111] Table 3

[0112]

[0113]

[0114] As can be seen from the results in Table 3, the waterproof roll material provided by the present application has better effects of thermal insulation, low temperature resistance and adhesion to metal roof.

[0115] The preferred embodiments of the present application are described in detail above, but the present application is not limited thereto. Within the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, including the combination of various technical features in any other suitable manner. These simple modifications and combinations should also be considered as disclosed by the present application and fall within the protection scope of the present application.

Claims

1. A composition for modified bitumen coating, characterized in that, The composition contains a main agent and an auxiliary agent. The main agent includes a base pitch, a solvent oil with an aromatic content ≥70wt%, linear SBS, SBR, neodymium iron boron magnetic powder, cobalt borate, and styrene-indene resin. The SBR has a Mooney viscosity (ML(1+4)) of 60-78 at 100°C and contains 20-25wt% styrene structural units. Based on the total weight of the composition, the content of the base bitumen is 40-55 wt%, the content of the solvent oil is 5-10 wt%, the content of the linear SBS is 3-5 wt%, the content of the SBR is 3-5 wt%, the content of the neodymium iron boron magnetic powder is 2-6 wt%, the content of the cobalt borate is 0.5-3 wt%, and the content of the styrene-indene resin is 1-3 wt%.

2. The composition according to claim 1, characterized in that, The solvent oil is furfural extract oil.

3. The composition according to claim 1 or 2, characterized in that, The weight ratio of the neodymium iron boron magnetic powder to the cobalt borate is 2-4:1; And / or, the average particle diameter of the neodymium iron boron magnetic powder is 30-40 μm; And / or, the maximum magnetic energy product of the neodymium iron boron magnetic powder is ≥45 MGOe; And / or, the cobalt content in the borosilicated cobalt is 21wt%~23.5wt%; And / or, the additives include fillers; the filler content is 20-30 wt% based on the total weight of the composition; And / or, the filler is light calcium carbonate with an average particle diameter of 55-85 μm.

4. The composition according to claim 1 or 2, characterized in that, The softening point of the styrene-indene resin is 75-135℃.

5. A method for preparing a modified asphalt coating, characterized in that, This method is carried out using the components of the composition according to any one of claims 1-4, and includes the following steps: (1) The base asphalt and solvent oil are mixed for the first time to obtain material A; (2) The material A is mixed with linear SBS for a second time to obtain material B; (3) The material B is mixed with SBR for the third time to obtain material C; (4) The material C is mixed with neodymium iron boron magnetic powder, cobalt borate, and styrene-indene resin to obtain material D; (5) The material D is mixed with the additives in a fifth process to obtain the modified asphalt coating.

6. The method according to claim 5, characterized in that, In step (1), the conditions for the first mixing include: a reaction temperature of 150-170°C and a reaction time of 20-25 min; And / or, in step (2), the conditions for the second mixing include: a reaction temperature of 150-170°C, a reaction time of 20-25 min, and a stirring rate of 1400-1600 rpm; And / or, in step (3), the conditions for the third mixing include: a reaction temperature of 150-170°C, a reaction time of 65-75 min, and a stirring rate of 1400-1600 rpm; And / or, in step (4), the conditions for the fourth mixing include: a reaction temperature of 180-190°C, a reaction time of 180-190 min, and a stirring rate of 1400-1600 rpm; And / or, in step (5), the conditions for the fifth mixing include: a reaction temperature of 180-190°C, a reaction time of 50-60 min, and a stirring rate of 1400-1600 rpm.

7. The modified bitumen coating prepared by the method of claim 5 or 6.

8. A waterproof membrane, characterized in that, The waterproof membrane comprises a reinforced aluminum foil film, a modified bitumen coating, and a release liner, which are stacked sequentially. The modified bitumen coating material is the modified bitumen coating material as described in claim 7.

9. The waterproof membrane according to claim 8, characterized in that, The reinforced aluminum foil film is a composite film of aluminum foil and PET film; And / or, the thickness of the PET film in the reinforced aluminum foil film is 0.06-0.08 mm.

10. The waterproof membrane according to claim 9, characterized in that, The separator is a PET silicone oil separator.

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