Non-asphalt-based biomass waterproof coiled material and preparation method thereof

Abstract

The invention discloses a non-asphalt-based biomass waterproof coiled material and a preparation method thereof. The non-asphalt-based biomass waterproof coiled material comprises a main body material layer, a non-asphalt-based self-adhesion layer and an anti-adhesion layer which are sequentially stacked, the main body material layer comprises a base film and a biomass charcoal aerogel layer coated on the surface of at least one side of the base film. The main body material layer with the biomass carbon aerogel layer is obtained by coating the base film with the biomass carbon aerogel powder, so that the non-asphalt-based biomass waterproof coiled material prepared by the preparation method has good heat resistance limit and relatively high combustion grade, the heat conductivity coefficient is greatly reduced, and the service life of the non-asphalt-based biomass waterproof coiled material is prolonged. And the non-asphalt-based self-adhesive layer coiled material can be effectively prevented from flowing and dripping due to the temperature of the external environment.

Description

Technical Field

[0001] This application belongs to the technical field of building waterproof materials, and particularly relates to a non-asphalt-based biomass waterproof coiled material and a preparation method thereof. Background Art

[0002] In the field of building waterproofing, non-asphalt-based coiled materials, as a new type of polymer composite waterproof material, are widely used in waterproof and anti-seepage projects such as building basements, subways, tunnels, caverns, and municipal construction due to their superior performance.

[0003] However, the conventional non-asphalt-based waterproof coiled materials on the current market can only achieve a simple waterproof effect and cannot achieve a more efficient flame retardant and heat insulation effect. Therefore, it is necessary to optimize the non-asphalt-based waterproof coiled materials so that their performance will not decline due to environmental temperature in hot summers or cold winters and can maintain a good waterproof effect for a long time. Summary of the Invention

[0004] The embodiments of this application provide a non-asphalt-based biomass waterproof coiled material and a preparation method thereof, which can enable the waterproof coiled material to maintain good performance for a long time in hot summers or cold winters, will not decline due to extreme changes in environmental temperature, and can play a good waterproof role.

[0005] In a first aspect, the embodiments of this application provide a non-asphalt-based biomass waterproof coiled material, including: a main material layer, a non-asphalt-based self-adhesive layer, and a release layer that are sequentially laminated; wherein, the main material layer includes a base film and a biomass carbon aerogel layer coated on at least one surface of the base film, and the biomass carbon aerogel layer includes biomass carbon aerogel powder.

[0006] According to the embodiments of the first aspect of this application, the coating amount of the biomass carbon aerogel powder on the base film is 0.5% - 5%.

[0007] According to the embodiments of the first aspect of this application, the thickness of the self-adhesive layer is 1.3 mm - 1.8 mm; the thickness of the main material is 0.6 mm - 0.8 mm; the thickness of the release layer is 0.03 mm - 0.05 mm.

[0008] According to the embodiments of the first aspect of this application, the biomass carbon aerogel powder is prepared by the following preparation method, and the method includes:

[0009] Adding biomass materials to an alkaline aqueous solution with a pH value of 8 - 12, and the mass ratio of the biomass materials to the alkaline aqueous solution is 1:1 - 5 to obtain a biomass material dispersion system;

[0010] Adding an epoxy cross-linking agent to the biomass material dispersion system and performing a gelation reaction to obtain a biomass gel; wherein, the mass ratio of the epoxy cross-linking agent to the biomass materials is 1:0.5 - 3;

[0011] React the biomass gel at 180 - 200 °C, and obtain biomass solids after washing;

[0012] Freeze-dry the biomass solids, and obtain biomass carbon aerogel powder after grinding.

[0013] According to the embodiments of the first aspect of the present application, the step of freeze-drying the biomass solids includes:

[0014] Freeze the biomass solids at a temperature of -20 °C to -10 °C for 20 to 25 hours, and then dry them in a freeze-dryer.

[0015] According to the embodiments of the first aspect of the present application, the biomass material is selected from wood, straw, rice husk, lignin or a combination thereof.

[0016] According to the embodiments of the first aspect of the present application, the alkaline aqueous solution with a pH value of 8 - 12 is an aqueous solution of an alkali metal hydroxide or a soluble alkaline earth metal hydroxide.

[0017] According to the embodiments of the first aspect of the present application, the epoxy cross-linking agent is selected from epichlorohydrin, ethylene oxide, propylene oxide, epoxy butene or a combination thereof.

[0018] According to the embodiments of the first aspect of the present application, the non-bituminous self-adhesive layer comprises the following raw material components in mass percentage:

[0019] Softening oil, 25 - 35 wt%; modifier, 15 - 20 wt%; tackifier, 25 - 30 wt%; plasticizer, 5 - 7 wt%; filler, 15 - 25 wt%; pigment, 0 - 1 wt%.

[0020] According to the embodiments of the first aspect of the present application, the softening oil comprises at least one of naphthenic oil, rubber oil, waste engine oil and polyisobutene.

[0021] According to the embodiments of the first aspect of the present application, the modifier is SBS, which is a star structure, the styrene content is 20% - 30%, and the molecular weight is 150,000 - 450,000.

[0022] According to the embodiments of the first aspect of the present application, the tackifier comprises at least one of C5 resin, rosin resin, terpene resin, coumarone resin.

[0023] According to the embodiments of the first aspect of the present application, the plasticizer is at least one of tributyl phosphate, diphenyl octyl phosphate, trioctyl phosphate.

[0024] According to the embodiments of the first aspect of the present application, the filler comprises at least one of heavy calcium carbonate, talcum powder, light calcium carbonate, calcined kaolin.

[0025] In a second aspect, the present application provides a method for preparing a non-asphalt-based biomass waterproof coiled material, comprising the following steps: coating biomass carbon aerogel powder on at least one side of a base film to obtain a biomass carbon aerogel layer, so as to form a main material layer; coating a non-asphalt-based self-adhesive coating on the main material layer to form a non-asphalt-based self-adhesive layer; and forming a release layer on the non-asphalt-based self-adhesive layer to obtain the non-asphalt-based biomass waterproof coiled material.

[0026] According to an embodiment of the second aspect of the present application, the main material layer is prepared by the following method: dispersing an adhesive, biomass carbon aerogel powder and a solvent uniformly according to a mass ratio of 100:1 to 10:5 to 15, and coating the mixture on at least one side surface of the base film to obtain the main material layer.

[0027] The main material layer of the non-asphalt-based biomass waterproof coiled material in the present application comprises a base film and a biomass carbon aerogel layer. The biomass carbon aerogel layer is formed by coating biomass carbon aerogel powder on the base film, so that the non-asphalt-based biomass waterproof coiled material prepared in the present application has a good heat resistance limit, a relatively high combustion rating, and a greatly reduced thermal conductivity. It can effectively block accidents such as the coiled material flowing, dripping, and catching fire due to high external environmental temperatures, avoid the performance degradation of the non-asphalt-based coating due to external temperature changes, improve the heat insulation and flame retardant effects of the coiled material, and also have a certain delaying effect on the attenuation of the long-term heat aging performance of the coiled material; it also has the advantages of being thin, low-cost, and convenient for transportation, is suitable for large-scale industrial production, and has broad market prospects and development potential. Detailed Embodiments

[0028] The features and exemplary embodiments of various aspects of the present application will be described in detail below. For the purpose of making the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application.

[0029] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0030] The non-asphalt-based waterproof coiled material has the advantages of strong adhesion, good weather resistance, convenient construction, etc., but currently it cannot achieve a more efficient flame retardant and heat insulation effect. During application and storage, due to the relatively high outdoor temperature, especially in the south where the surface temperature can reach 60 - 70 °C, it is very easy for the non-asphalt-based coating material to flow and deform, and accelerate aging at high temperatures, as well as some other potential safety hazards. On the other hand, due to the long-term storage of the coiled material in the warehouse and the inability to maintain a constant temperature indoors, our coiled material is very likely to deform, which seriously affects the appearance of the coiled material.

[0031] In view of the above problems, the inventors of the present application optimized the non-asphalt-based waterproof coiled material, so that the waterproof coiled material can maintain good performance for a long time in hot summers or cold winters, will not decline due to extreme changes in environmental temperature, and can play a good waterproof role.

[0032] In a first aspect, an embodiment of the present application provides a non-asphalt-based biomass waterproof coiled material, comprising: a main material layer, a non-asphalt-based self-adhesive layer and a release layer stacked in sequence; wherein, the main material layer includes a base film and a biomass carbon aerogel layer coated on at least one surface of the base film, and the biomass carbon aerogel layer includes biomass carbon aerogel powder.

[0033] The main material layer of the non-asphalt-based biomass waterproof coiled material in the present application includes a base film and a biomass carbon aerogel layer.

[0034] In some embodiments, the base film is selected from an aluminized foil film, a composite film.

[0035] In some embodiments, the aluminized foil film is formed by electroplating a layer of aluminum on the surface of a polymer film to endow the base film with certain structural strength and protect the coil material. Among them, the polymer includes PET, PE, PETG, PP, etc. PET, PE, PETG, and PP respectively refer to polyethylene terephthalate, polyethylene, polyethylene terephthalate-1,4-cyclohexanedimethanol ester, and polypropylene, all of which are film materials suitable for the base film. The biomass carbon aerogel layer is disposed on the side opposite to the aluminized side of the film.

[0036] The base film can also be formed by plating a layer of other metal on the surface of the film layer.

[0037] In some embodiments, the composite film is selected from films formed by extrusion of PET, PE, PETG, PP, etc., or films formed by compounding or co-extrusion compounding of two or more of them after extrusion.

[0038] In this application, the biomass carbon aerogel layer is formed by coating the surface of the base film with biomass carbon aerogel powder. The biomass carbon aerogel layer is disposed on one side surface of the composite film, or the biomass carbon aerogel layer is disposed on both side surfaces of the composite film.

[0039] In some embodiments, the anti-sticking layer is formed by mineral particles, such as reaction sand, natural sand, cement sand, machine-made sand, etc.

[0040] Compared with the asphalt-based formulation, the waterproof coil material in the embodiments of this application is a non-asphalt-based formulation, which is excellent in physical properties and aging resistance, and the system is more stable. The main material layer in the non-asphalt-based biomass waterproof coil material of this application includes a base film and a biomass carbon aerogel layer. The biomass carbon aerogel layer is formed by coating biomass carbon aerogel powder on the base film, so that the non-asphalt-based biomass waterproof coil material prepared in this application has a good heat resistance limit, a relatively high combustion rating, and a greatly reduced thermal conductivity. It can effectively block accidents such as the flowing, dripping, and fire of the waterproof coil material caused by high external environmental temperature, avoid the performance decline of the non-asphalt-based coating due to external temperature changes, improve the heat insulation and flame retardant effects of the coil material, and also have a certain delay in the attenuation of the thermal aging performance of the coil material for a long time; it also has the advantages of light weight, low cost, and convenient transportation, is suitable for large-scale industrial production, and has broad market prospects and development potential.

[0041] In recent years, the country has been advocating a low-carbon and environmentally friendly lifestyle, and the new waterproof industry standard in 2023 has put forward higher requirements for waterproof coil materials, gradually tending to be more environmentally friendly. The biomass carbon aerogel powder in the embodiments of this application uses waste biomass as raw material, which not only realizes the resource utilization of waste, but also conforms to the national concept of low-carbon environmental protection, which has important significance for thoroughly implementing the newly introduced waterproof regulations.

[0042] In some embodiments, the coating amount of the biomass carbon aerogel powder on the base film is 0.5% to 5%. Preferably, the thickness of the aerogel coating on the base film is controlled within 0.05 mm to 0.15 mm.

[0043] The coating amount refers to the percentage of the mass of the biomass carbon aerogel powder in the total mass of the coated base film.

[0044] The inventors of the present application found during production that excessive coating amount and thickness affect the flexibility of the coil on the one hand and result in higher costs on the other hand; however, when the coating amount and thickness are too small, the heat insulation performance is weak. Therefore, controlling the coating amount and thickness of the biomass carbon aerogel powder on the base film within the above ranges can achieve better comprehensive performance.

[0045] Exemplarily, the coating amount of the biomass carbon aerogel powder on the base film is 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%.

[0046] In the embodiments of the present application, when the coating amount of the base film and the thickness of the biomass carbon aerogel layer are within the above suitable ranges, the stability can be improved. A relatively thick biomass carbon aerogel layer may lead to insufficient flexibility of the main material layer, while a too thin layer may result in insufficient heat insulation effect.

[0047] In some embodiments, the thickness of the self-adhesive layer is 1.3 mm - 1.8 mm; the thickness of the main material layer is 0.6 mm - 0.8 mm; the thickness of the anti-adhesive layer is 0.03 mm - 0.05 mm.

[0048] In the embodiments of the present application, by setting the thicknesses of the main material layer, the self-adhesive layer, and the anti-adhesive layer within the above ranges, it helps to balance between flexibility and heat insulation performance. In some embodiments, the biomass carbon aerogel powder is prepared by the following preparation method, and the method includes:

[0049] Adding the biomass material into an alkaline aqueous solution with a pH value of 8 - 12, and the mass ratio of the biomass material to the alkaline aqueous solution is 1:1 - 5 to obtain a biomass material dispersion system;

[0050] Adding an epoxy cross-linking agent to the biomass material dispersion system and performing a gelation reaction to obtain a biomass gel; wherein, the mass ratio of the epoxy cross-linking agent to the biomass material is 1:0.5 - 3;

[0051] Reacting the biomass gel at 180 - 200 °C, and after washing, obtaining a biomass solid;

[0052] Freeze-drying the biomass solid and grinding it to obtain the biomass carbon aerogel powder.

[0053] In some embodiments, the biomass material is selected from wood, straw, rice husk, lignin, or a combination thereof, i.e., a raw material capable of providing cellulose and / or lignin. It is obtained by pulverizing and sieving through a 60-mesh to 120-mesh sieve to remove impurities.

[0054] The mass ratio here refers to the mass ratio of the biomass material to the alkaline aqueous solution. The alkali treatment is to break the C-C structure of lignin and make it fall off from cellulose and hemicellulose. Exemplarily, the wood is eucalyptus, pine, etc.

[0055] In some embodiments, the alkaline aqueous solution with a pH value of 8 to 12 is an aqueous solution of alkali metal hydroxide or soluble alkaline earth metal hydroxide.

[0056] Exemplarily, the pH value of the alkaline aqueous solution can also be 8.1, 8.3, 8.5, 8.7, 8.9, 9.0, 9.1, 9.2, 9.3, 9.4, 9.6, 9.8, 10, 10.2, 10.4, 10.5, 10.6, 10.7, 10.9, 11, 11.2, 11.4, 11.6, 11.8, 11.7, 12.

[0057] In some embodiments of the present application, the alkali metal hydroxide is selected from sodium hydroxide, potassium hydroxide, or a combination thereof; the soluble alkaline earth metal hydroxide is barium hydroxide. Exemplarily, the alkaline aqueous solution is a 2-5% NaOH solution.

[0058] Exemplarily, the mass ratio of the biomass material to the aqueous solution in the alkaline environment can be 1:1, 1:1.2, 1:1.5, 1:1.8, 1:2, 1:2.1, 1:2.3, 1:2.5, 1:2.7, 1:2.85, 1:2.95, 1:3.1, 1:3.4, 1:3.6, 1:3.75, 1:3.8, 1:4.0, 1:4.3, 1:4.6, 1:4.7, 1:4.81, 1:4.9.

[0059] In some embodiments, the epoxy crosslinking agent is selected from epoxyalkanes and / or epoxyalkenes. The epoxy crosslinking agent can react with the hydroxyl, amino, and carboxyl active groups contained in the hydrolyzed biomass material in the biomass gel, the epoxy group will open the ring, and a covalent bond between the oxygen atom and the carbon atom forms a crosslinked structure.

[0060] In some embodiments, the epoxy crosslinking agent is selected from epichlorohydrin, ethylene oxide, propylene oxide, epoxybutene, or a combination thereof.

[0061] In an embodiment of the present application, the epoxy crosslinking agent is epichlorohydrin. The chloropropyl group will undergo a substitution reaction with a nucleophilic substance or nucleophilic group to form a new compound. In addition to the epoxy group forming a covalent bond with the active group, the chloropropyl group of epichlorohydrin will also react with other active groups in the biomass material to form a crosslinked structure.

[0062] Exemplarily, the mass ratio of the epoxy crosslinking agent to the biomass material can also be 1:0.6, 1:0.7, 1:0.9, 1:1, 1:1.1, 1:1.3, 1:1.4, 1:1.5, 1:1.6, 1:1.7, 1:1.8, 1:1.9, 1:2.0, 1:2.2, 1:2.4, 1:2.5, 1:2.7, 1:2.8, 1:2.9, 1:3.0.

[0063] After adding the epoxy crosslinking agent, it can be dispersed by mechanical stirring or magnetic stirring to make it fully mixed evenly. The magnetic stirring speed does not exceed 500 rpm / min.

[0064] Exemplarily, the step of reacting the biomass gel at 180 - 200 °C includes transferring the obtained biomass gel into a polytetrafluoroethylene hydrothermal reaction kettle and reacting at a temperature of 180 - 200 °C for 8 - 12 h to obtain a black carbon aerogel; washing the black carbon aerogel with ethanol and distilled water 3 - 5 times respectively to obtain a biomass solid.

[0065] In some embodiments, the step of freeze-drying the biomass solid includes:

[0066] Freezing the biomass solid at a temperature of -20 °C to -10 °C for 20 hours to 25 hours and drying it in a freeze-dryer.

[0067] Freezing the water-containing biomass solid below the freezing point to convert water into ice, and then converting the ice in the biomass solid into vapor and removing it under a higher vacuum. Sublimating the small and evenly distributed ice crystals in the biomass solid into water vapor and removing them under high vacuum conditions, which can retain the components of the biomass solid to the greatest extent.

[0068] Exemplarily, put the biomass solid into the refrigerator and freeze it for 24 h, and place the frozen sample in a freeze-dryer for drying.

[0069] The applicant notes that the freezing temperature, freezing time and freeze-drying parameter settings have an impact on the formation of the biomass carbon aerogel powder. Different freezing drying temperatures and times will affect the pore structure and specific surface area of the aerogel. When the drying temperature and time are within the above range, the pore structure size of the aerogel can be uniform.

[0070] In the embodiments of the present application, the biomass carbon aerogel powder uses waste biomass as raw material, and through sol-gel method, carbonization and freeze-drying, a biomass carbon aerogel with low density, good flame retardancy and excellent heat insulation effect is successfully prepared. This not only realizes the resource utilization of biomass raw material waste, but also conforms to the national concept of low-carbon environmental protection. Preparing the biomass carbon aerogel by freeze-drying has lower requirements for equipment in terms of pressure and temperature than supercritical drying; and the operation is simple, with low requirements for operators, relatively mild operating conditions and relatively low costs. The above method is simple and easy to operate, suitable for large-scale industrial production, and has broad market prospects and development potential.

[0071] In some embodiments, the non-bituminous self-adhesive layer comprises the following raw material components in mass percentage:

[0072] Softening oil, 25-35 wt%; modifier, 15-20 wt%; tackifier, 25-30 wt%; plasticizer, 5-7 wt%; filler, 15-25 wt%; pigment, 0-1 wt%.

[0073] In some embodiments, the softening oil comprises at least one of naphthenic oil, rubber oil, waste engine oil and polyisobutene.

[0074] In some embodiments, the modifier is SBS, with a star structure, styrene content of 20%-30%, and molecular weight of 150,000-450,000.

[0075] In some embodiments, the tackifier comprises at least one of C5 resin, rosin resin, terpene resin and coumarone resin.

[0076] In some embodiments, the plasticizer is at least one of tributyl phosphate, diphenyl octyl phosphate and tributyl phosphate.

[0077] In some embodiments, the filler comprises at least one of heavy calcium carbonate, talcum powder, light calcium carbonate and calcined kaolin.

[0078] The non-asphalt-based self-adhesive layer is formed by a non-asphalt-based coating material. In the prior art, the non-asphalt-based coating material is prone to flow deformation at 60-70°C, accelerated aging at high temperatures, and some other safety hazards. In view of the above situation, in this application, a main material layer with a biochar aerogel layer is obtained by coating biochar aerogel powder on a base film, so that the non-asphalt-based bio-based waterproof coiled material prepared in this application has a good heat resistance limit, a relatively high combustion rating, and a greatly reduced thermal conductivity. It can effectively block accidents such as the coiled material flowing, dripping, and catching fire due to high external environmental temperatures, avoid the performance degradation of the coiled material caused by the change of the external temperature of the non-asphalt-based coating material, improve the heat insulation and flame retardant effects of the coiled material, and also have a certain delay in the attenuation of the heat aging performance of the waterproof coiled material for a long time.

[0079] In a second aspect, this application provides a method for preparing a non-asphalt-based bio-based waterproof coiled material, including the following steps:

[0080] Coat biochar aerogel powder on at least one side of the base film to obtain a biochar aerogel layer, so as to form a main material layer;

[0081] Coat a non-asphalt-based self-adhesive coating material on the main material layer to form a non-asphalt-based self-adhesive layer; form an anti-sticking layer on the non-asphalt-based self-adhesive layer to obtain a non-asphalt-based bio-based waterproof coiled material.

[0082] In this application, a main material layer with a biochar aerogel layer is obtained by coating biochar aerogel powder on a base film, so that the non-asphalt-based bio-based waterproof coiled material prepared in this application has a good heat resistance limit, a relatively high combustion rating, and a greatly reduced thermal conductivity. It can effectively block accidents such as the coiled material flowing, dripping, and catching fire due to high external environmental temperatures, avoid the performance degradation of the coiled material caused by the change of the external temperature of the non-asphalt-based coating material, improve the heat insulation and flame retardant effects of the coiled material, and also have a certain delay in the attenuation of the heat aging performance of the waterproof coiled material for a long time. It also has the advantages of being light and thin in material, low in cost, and convenient in transportation, is suitable for large-scale industrial production, and has broad market prospects and development potential.

[0083] In some embodiments, the main material layer is prepared by the following method: uniformly disperse an adhesive, biochar aerogel powder, and a solvent in a mass ratio of 100:1 to 10:5 to 15, and coat it on at least one side surface of the base film to obtain the main material layer.

[0084] In some embodiments, the adhesive is selected from silicone adhesives, polyurethane adhesives, epoxy resin adhesives, or combinations thereof.

[0085] In some embodiments, the silicone adhesive is selected from YNR-2050, YNR-1050, or a combination thereof. YNR-2050 and YNR-1050 are purchased from Wuxi Xiyano New Material Technology Co., Ltd. or Shenzhen Jipeng Silicon Fluoride Materials Co., Ltd.

[0086] In some embodiments, the polyurethane adhesive is selected from JD-9288, JD-9160, or a combination thereof. JD-9288 and JD-9160 are purchased from Dongguan Jiudian Adhesive Industry Co., Ltd.

[0087] In some embodiments, the epoxy resin adhesive is selected from epoxy resin E-44, epoxy resin E-51, or a combination thereof. Epoxy resin E-44 and epoxy resin E-51 are purchased from Jinan Qiwei Chemical Co., Ltd.

[0088] Exemplarily, the mass ratio of the adhesive, biochar aerogel powder to the solvent can also be 100:2:6, 100:3.5:7, 100:4:8, 100:4.8:8.1, 100:5:9, 100:7:10, 100:8:11, 100:9:12, 100:10:12, 100:10:5.

[0089] Embodiment

[0090] The following examples more specifically describe the content disclosed in the present application. These examples are only for illustrative purposes, as various modifications and changes within the scope of the present application are obvious to those skilled in the art. The following are the requirements, models / grades, or available sources of some raw materials / materials used in the examples:

[0091] Talc powder, with an average particle size of 100 mesh to 300 mesh;

[0092] Adhesive, select silicone adhesive, grade YNR-2050, sold by Wuxi Xiyano New Material Technology Co., Ltd.

[0093] SBS, grade 411, manufactured by Yueyang Baling Petrochemical.

[0094] Terpene resin, grade T100, manufactured by Shanghai Kayin Chemical Co., Ltd.

[0095] Example 1

[0096] A non-bituminous bio-based waterproof coiled material includes a main material layer, a non-bituminous self-adhesive layer, and a release layer stacked in sequence. A biochar aerogel layer is coated on one side of the base film of the main material layer. Among them, the non-bituminous self-adhesive layer is formed by a non-bituminous coating material, and the raw materials of the non-bituminous coating material are as follows: based on the total weight of the non-bituminous self-adhesive layer,

[0097] Softening oil (waste engine oil), 25 wt%;

[0098] Modifier (SBS411), 15 wt%;

[0099] Tackifier (terpene resin), 27 wt%;

[0100] Plasticizer (trioctyl phosphate), 7 wt%;

[0101] Filler (talc powder), 25 wt%;

[0102] Pigment (iron oxide red), 1 wt%.

[0103] The preparation of the above non-asphalt-based biomass waterproof coiled material includes the following steps:

[0104] 1) Preparation of biomass carbon aerogel powder:

[0105] Put 60 g of biomass waste (eucalyptus and pine with a mass ratio of 1:1) into a beaker, add 60 mL of 2% NaOH solution by mass fraction, (10 mL) deionized water, and add 80 g of epichlorohydrin under magnetic stirring. Stir to make it completely mixed evenly, and carry out a gelation reaction for 8 h to obtain a biomass gel.

[0106] Transfer the obtained biomass gel to a polytetrafluoroethylene hydrothermal reaction kettle, react at a temperature of 180 °C for 10 h to obtain a black carbon aerogel. Wash the biomass waste after hydrothermal treatment 5 times with ethanol and distilled water respectively, then put it into the refrigerator and freeze for 24 h. Place the frozen sample in a freeze dryer for drying (the freezing temperature is -20 °C and the freezing time is 20 hours), and grind it into powder with a particle size of 200 mesh to obtain biomass carbon aerogel.

[0107] 2) Preparation of the main material layer:

[0108] Mix the binder with the biomass carbon aerogel powder prepared above. The addition amount of the aerogel powder is 5% of the binder amount (100 parts by weight of the binder), and add 10% of the solvent by weight of the binder, and stir evenly to obtain a biomass carbon aerogel composition. Among them, the solvent is anhydrous ethanol.

[0109] Provide an aluminized foil film as the base film; coat the biomass carbon aerogel composition prepared above on one side of the aluminized foil film. The length of the aluminized foil film is 1000 mm and the width is 960 mm. The coating amount on the base film is 0.5 wt%, and the coating amount refers to the percentage of the mass of the biomass carbon aerogel powder in the total mass of the coated base film.

[0110] 3) Preparation of the waterproof coiled material:

[0111] S1: Add 25 wt% of softening oil to the metal storage tank in proportion, stir at 500 rpm, heat up to 110 °C, then add 15 wt% of modifier, and keep the temperature for 20 min.

[0112] S2: Add 27 wt% of tackifier to S1, raise the reaction conditions to 600 rpm, the temperature is 120 °C, and the heat preservation time is 30 min.

[0113] S3: Add 7 wt% of plasticizer to S2, raise the reaction conditions to 600 rpm, the temperature is 160 °C, and the time is 2.5 h.

[0114] S4: Add 25 wt% of filler and 1 wt% of pigment to S3, raise the reaction conditions to 1000 rpm, the temperature is 160 °C, and the time is 45 min, then discharge and form to obtain the non-asphalt based coating material.

[0115] S5: After the reaction is completed, pour the above coating material onto the main material layer, form it, extrude it with a metal roller, cover the non-asphalt based coating material with an anti-sticking layer, the anti-sticking layer is reaction sand, and after cooling, a waterproof coiled material is obtained. The thickness of the self-adhesive layer is 1.5 mm; the thickness of the main material is 0.6 mm; the thickness of the anti-sticking layer is 0.04 mm.

[0116] Example 2

[0117] A non-asphalt based biomass waterproof coiled material, comprising a main material layer, a non-asphalt based self-adhesive layer and an anti-sticking layer which are sequentially laminated. A biomass carbon aerogel layer is coated on one side of the base film of the main material layer. Among them, the non-asphalt based self-adhesive layer is formed by a non-asphalt based coating material, and the raw materials of the non-asphalt based coating material are as follows: based on the total weight of the non-asphalt based self-adhesive layer,

[0118] Softening oil (waste engine oil), 30 wt%;

[0119] Modifier (SBS), 15 wt%;

[0120] Tackifier (terpene resin), 30 wt%;

[0121] Plasticizer (trioctyl phosphate), 5 wt%;

[0122] Filler (talc powder), 19 wt%;

[0123] Pigment (iron oxide red), 1 wt%.

[0124] The preparation process of the above non-asphalt based biomass waterproof coiled material is similar to that of Example 1, except that: a) the raw materials of the non-asphalt based coating material are provided according to Example 2;

[0125] b) The coating amount on the base film is 1%.

[0126] Example 3

[0127] A non-asphalt-based biomass waterproof coiled material, comprising a main material layer, a non-asphalt-based self-adhesive layer and a release layer which are sequentially laminated. A biomass carbon aerogel layer is coated on one side of the base film of the main material layer. Among them, the non-asphalt-based self-adhesive layer is formed by a non-asphalt-based coating material. The raw materials of the non-asphalt-based coating material are as follows: based on the total weight of the non-asphalt-based self-adhesive layer,

[0128] Softening oil (waste engine oil), 30 wt%;

[0129] Modifier (SBS), 20 wt%;

[0130] Tackifier (terpene resin), 25 wt%;

[0131] Plasticizer (tributyl phosphate), 7 wt%;

[0132] Filler (talc powder), 17.5 wt%;

[0133] Pigment (iron oxide red), 0.5 wt%.

[0134] The preparation process of the above non-asphalt-based biomass waterproof coiled material is similar to that of Example 1, except that: a) the raw materials of the non-asphalt-based coating material are provided according to Example 3;

[0135] b) The coating amount on the base film is 2%.

[0136] Example 4

[0137] A non-asphalt-based biomass waterproof coiled material, comprising a main material layer, a non-asphalt-based self-adhesive layer and a release layer which are sequentially laminated. A biomass carbon aerogel layer is coated on one side of the base film of the main material layer. Among them, the non-asphalt-based self-adhesive layer is formed by a non-asphalt-based coating material. The raw materials of the non-asphalt-based coating material are as follows: based on the total weight of the non-asphalt-based self-adhesive layer,

[0138] Softening oil (waste engine oil), 35 wt%;

[0139] Modifier (SBS), 15 wt%;

[0140] Tackifier (terpene resin), 28 wt%;

[0141] Plasticizer (trioctyl phosphate), 6 wt%;

[0142] Filler (talc powder), 15.5 wt%;

[0143] Pigment (iron oxide red), 0.5 wt%.

[0144] The preparation process of the above non-asphalt-based biomass waterproof coiled material is similar to that of Example 1, except that: a) the raw materials of the non-asphalt-based coating are provided according to Example 4;

[0145] b) The coating amount on the base film is 5%.

[0146] Comparative Example 1

[0147] A non-asphalt-based biomass waterproof coiled material includes a main material layer, a non-asphalt-based self-adhesive layer, and a non-stick layer that are sequentially stacked. Among them, the non-asphalt-based self-adhesive layer is formed by a non-asphalt-based coating, and the raw material composition of the non-asphalt-based coating is the same as that of Example 1.

[0148] The preparation process of the above non-asphalt-based biomass waterproof coiled material is similar to that of Example 1, except that:

[0149] The biomass carbon aerogel layer is not coated on the base film.

[0150] Comparative Example 2

[0151] A non-asphalt-based biomass waterproof coiled material includes a main material layer, a non-asphalt-based self-adhesive layer, and a non-stick layer that are sequentially stacked. Among them, the non-asphalt-based self-adhesive layer is formed by a non-asphalt-based coating, and the raw material composition of the non-asphalt-based coating is the same as that of Example 2.

[0152] The preparation process of the above non-asphalt-based biomass waterproof coiled material is similar to that of Example 2, except that:

[0153] The biomass carbon aerogel layer is not coated on the base film.

[0154] Comparative Example 3

[0155] A non-asphalt-based biomass waterproof coiled material includes a main material layer, a non-asphalt-based self-adhesive layer, and a non-stick layer that are sequentially stacked. Among them, the non-asphalt-based self-adhesive layer is formed by a non-asphalt-based coating, and the raw material composition of the non-asphalt-based coating is the same as that of Example 3.

[0156] The preparation process of the above non-asphalt-based biomass waterproof coiled material is similar to that of Example 3, except that:

[0157] The biomass carbon aerogel layer is not coated on the base film.

[0158] Test results:

[0159] Perform performance tests on the waterproof coiled materials of the above examples and comparative examples for the following items:

[0160] 1. Heat resistance test

[0161] Sampling and testing were carried out in accordance with Part 14 of the national standard GB / T 328-2007 "Test Methods for Building Waterproofing Membranes". The heat resistance test conditions used were hot air oven thermal aging at 70°C to 150°C;

[0162] 2. Combustion rating test

[0163] The detection standard for the combustion performance rating is GB50016-2006 "Code for Fire Protection Design of Buildings".

[0164] 3. Thermal conductivity test

[0165] The detection standard for the thermal conductivity is GB / T 22588-2008 "Measurement of Thermal Diffusivity or Thermal Conductivity by the Flash Method".

[0166] Record the performance test results in Table 1 below:

[0167] Table 1 Test data of examples and comparative examples

[0168]

[0169]

[0170] In Table 1, "≤2mm" represents the sliding distance of the waterproofing membrane during the heat resistance performance test.

[0171] Combining the content of the above examples and comparative examples and the performance test data in Table 1, it can be concluded that:

[0172] For the non-asphaltic biomass waterproofing membranes of Examples 1-4 of this application, the biomass carbon aerogel layer formed by coating the aluminized foil film with biomass carbon aerogel powder can effectively improve the combustion rating of the waterproofing membrane, and all can reach the A-level combustion rating, indicating that the biomass flame-retardant and heat-insulating self-adhesive waterproofing membrane has good flame retardancy.

[0173] Moreover, as the coating amount of the biomass carbon aerogel composition on the aluminized foil film of the waterproofing membrane increases from 0.5% to 5%, the heat resistance of the waterproofing membrane gradually increases accordingly. Its heat resistance changes from no flow and no dripping at 85°C to no flow and no dripping at 125°C. At the same time, as the coating amount of the biomass carbon aerogel powder on the aluminized foil film of the waterproofing membrane increases from 0.5% to 5%, the thermal conductivity of the waterproofing membrane at 25°C gradually decreases accordingly, and the thermal conductivity decreases from the initial 0.045 W / (m·K) to 0.021 W / (m·K).

[0174] Compared with the waterproof coiled materials without coating the biomass carbon aerogel composition on the aluminized foil film in Comparative Examples 1-3, their heat resistance is only no flowing and no dripping at 70 °C; the combustion rating only reaches B2 level, and the thermal conductivity at 25 °C is as high as 0.055 W / (m·K) to 0.058 W / (m·K). The non-asphalt-based biomass waterproof coiled material of the embodiment of the present application forms a biomass carbon aerogel layer by coating 1%-10% of the biomass carbon aerogel on the surface of the aluminized foil film, so that the heat resistance temperature of the biomass flame-retardant, heat-insulating and self-adhesive waterproof coiled material is increased by 30 °C to 60 °C; the combustion rating is increased to A level; and the thermal conductivity of the waterproof coiled material is reduced to 17% to less than 50% of the original thermal conductivity. It shows that as the thickness of the biomass carbon aerogel layer increases, the heat resistance of the waterproof coiled material is improved and the thermal conductivity is reduced, which can effectively improve the flame-retardant performance and heat resistance of the waterproof coiled material.

[0175] As described above, only the specific embodiments of the present application are provided. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes described above can refer to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present application.

Claims

1. A non-asphalt-based biomass waterproofing membrane, characterized in that: include: A main material layer, a non-asphalt-based self-adhesive layer and an anti-adhesive layer are sequentially stacked; Wherein, the main material layer comprises a base film and a biomass carbon aerogel layer coated on at least one side of the base film, and the biomass carbon aerogel layer comprises biomass carbon aerogel powder.

2. The non-asphalt-based biomass waterproofing membrane according to claim 1, characterized in that: The coating amount of the biomass carbon aerogel powder on the base film is 0.5% to 5%.

3. The non-asphalt-based biomass waterproofing membrane according to claim 2, characterized in that: The thickness of the self-adhesive layer is 1.3 mm-1.8 mm; the thickness of the main material layer is 0.6 mm-0.8 mm; and the thickness of the anti-adhesive layer is 0.03 mm-0.05 mm.

4. The non-asphalt-based biomass waterproofing membrane according to claim 1, characterized in that: The biomass carbon aerogel powder is prepared by the following preparation method, which comprises: Adding the biomass material to an alkaline aqueous solution with a pH value of 8 to 12, wherein the mass ratio of the biomass material to the alkaline aqueous solution is 1:1 to 5, to obtain a biomass material dispersion system; Adding an epoxy crosslinking agent to the biomass material dispersion system to perform a gelation reaction to obtain a biomass gel; wherein the mass ratio of the epoxy crosslinking agent to the biomass material is 1:0.5-3; reacting the biomass gel at 180-200° C. and washing to obtain a biomass solid; The biomass solid is freeze-dried and ground to obtain biomass carbon aerogel powder.

5. The non-asphalt-based biomass waterproofing membrane according to claim 1, characterized in that: The step of freeze-drying the biomass solids comprises: The biomass solid is frozen at a temperature of -20°C to -10°C for 20 to 25 hours and dried in a freeze dryer.

6. The non-asphalt-based biomass waterproofing membrane according to claim 4, characterized in that: The biomass material is selected from wood, straw, rice husk, lignin or a combination thereof; and / or The alkaline aqueous solution with a pH value of 8 to 12 is an aqueous solution of an alkali metal hydroxide or a soluble alkaline earth metal hydroxide; and / or The epoxy crosslinking agent is selected from epichlorohydrin, ethylene oxide, propylene oxide, butylene oxide or a combination thereof.

7. The non-asphalt-based biomass waterproofing membrane according to claim 1, characterized in that: The non-asphalt-based self-adhesive layer comprises the following raw material components in percentage by mass: Softening oil, 25-35wt%; Modifier, 15-20wt%; Tackifier, 25-30wt%; Plasticizer, 5-7 wt%; Filler, 15-25wt%; Pigment, 0~1wt%.

8. The non-asphalt-based biomass waterproofing membrane according to claim 7, characterized in that: The softening oil comprises at least one of cycloparaffin oil, rubber oil, waste engine oil and polyisobutylene; and / or, The modifier is SBS, which has a star-shaped structure, a styrene content of 20%-30%, and a molecular weight of 150000-450000; and / or, The tackifier comprises at least one of C5 resin, rosin resin, terpene resin and coumarone resin; and / or, The plasticizer is at least one of trioctyl phosphate, diphenyl monooctyl phosphate, and tributyl phosphate; and / or, The filler includes at least one of heavy calcium carbonate, talc, light calcium carbonate and calcined kaolin.

9. A method for preparing a non-asphalt-based biomass waterproofing membrane according to any one of claims 1 to 8, characterized in that: The steps include: Coating biomass carbon aerogel powder on at least one side of the base film to obtain a biomass carbon aerogel layer to form a main material layer; Applying a non-asphalt-based self-adhesive coating material on the main body material layer to form a non-asphalt-based self-adhesive layer; A release layer is formed on the non-asphalt-based self-adhesive layer to obtain a non-asphalt-based biomass waterproofing membrane.

10. The method for preparing the non-asphalt-based biomass waterproofing membrane according to claim 9, characterized in that: The main material layer is prepared by the following method: The binder, the biomass carbon aerogel powder and the solvent are evenly dispersed in a mass ratio of 100:1 to 10:5 to 15, and coated on at least one side surface of the base film to obtain the main material layer.

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