CN114933811B - High-strength elastic high polymer modified asphalt, preparation and waterproof coiled material, preparation and application thereof and airport pavement structure system - Google Patents
High-strength elastic high polymer modified asphalt, preparation and waterproof coiled material, preparation and application thereof and airport pavement structure system Download PDFInfo
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- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
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Abstract
The invention belongs to the field of modified asphalt waterproof coiled materials, and discloses high-strength elastic high polymer modified asphalt, a preparation method of the high polymer modified asphalt, a waterproof coiled material, a preparation method of the high polymer modified asphalt, an application of the high polymer modified asphalt, and an airport pavement structural system. The modified asphalt comprises the following components: petroleum asphalt, blending star-shaped SBS, blending linear SIS, urea formaldehyde modified enzymatic hydrolysis lignin, an auxiliary agent and an inorganic filler. The waterproof coiled material prepared from the high-elasticity high-polymer modified asphalt has excellent elastic recovery performance, dimensional stability and durability, and has waterproof function and buffer function.
Description
Technical Field
The invention belongs to the field of modified asphalt waterproof coiled materials, and in particular relates to high-elasticity high polymer modified asphalt, a preparation method thereof, a waterproof coiled material, a preparation method and application thereof, and an airport pavement structure system.
Background
The high polymer modified asphalt waterproof coiled material is waterproof material with asphalt as main body and has important function in civil and important waterproof building.
At present, the high polymer modified asphalt satisfies the waterproof function of most industrial and civil construction projects, but does not satisfy the special functions required by special projects or places, such as the functions of buffering, wear resistance and load bearing required by airport runways (prefabricated assembly type roads).
For example, in order to reduce vibration generated when an aircraft lands, and to ensure a certain friction force, asphalt with high performance and porous friction coefficient is covered on the rigid pavement of an airport runway. However, the runway surface has low construction speed and long construction period, and the surface is easy to crack and break. In the process of frequent take-off and landing of an airplane, the pavement is damaged and poor in flatness, so that the problems of short service life and poor flight safety of the pavement are caused, and the flight safety is endangered.
In order to solve the above problems and the problem of flexible transitional connection between a base layer and a prefabricated plate related to the current prefabricated assembly type pavement structure, a novel modified asphalt waterproof coiled material and a preparation method are needed to be provided so as to meet the structural design and performance requirements of the current prefabricated assembly type pavement (such as an airport runway).
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and provides high-strength elastic high polymer modified asphalt, a preparation and waterproof coiled material, a preparation and application and an airport pavement structural system. The waterproof coiled material prepared from the high-elasticity high-polymer modified asphalt has excellent elastic recovery performance, dimensional stability and durability, and has waterproof function and buffer function.
In order to achieve the above object, the first aspect of the present invention provides a high-elastic high polymer modified asphalt comprising the following components: petroleum asphalt, blending star-shaped SBS, blending linear SIS, urea formaldehyde modified enzymatic hydrolysis lignin, an auxiliary agent and an inorganic filler.
According to the present invention, preferably, the modified asphalt comprises the following components in parts by weight: 60-80 parts of petroleum asphalt, 5-15 parts of blending star-shaped SBS, 1-6 parts of blending linear SIS, 2-4 parts of urea formaldehyde modified enzymatic hydrolysis lignin, 3.5-14 parts of auxiliary agent and 5-10 parts of inorganic filler.
According to the present invention, preferably, the petroleum asphalt comprises the following components in parts by weight: 90# asphalt (50-60) and 200# asphalt (10-20).
In the present invention, the 90# asphalt and the 200# asphalt are each independently selected from the group consisting of middle eastern Kevlar crude oil, south America Ma Rui crude oil and Xinjiang Kelman crude oil, and more preferably Venezuela Ma Rui crude oil.
According to the invention, preferably, the auxiliary comprises the following components in parts by weight: 1-4 parts of reinforcing agent, 2-5 parts of cross-linking agent and 0.5-5 parts of stabilizing agent.
According to the present invention, preferably, the blended star SBS includes a star SBS having a molecular weight of (16-19) ten thousand and a star SBS having a molecular weight of (20-25) ten thousand, and the ratio of the amount of the star SBS having a molecular weight of (16-19) ten thousand to the amount of the star SBS having a molecular weight of (20-25) ten thousand is 1: (2.5-3.5).
In the invention, as a preferable scheme, the dosage ratio of the star SBS with the molecular weight of (16-19) to the star SBS with the molecular weight of (20-25) is 1:3, the star SBS with the molecular weight of (16-19) and the star SBS with the molecular weight of (20-25) are mixed, sheared and ground into powder, and the mixture is subjected to secondary granulation to prepare the mixed star SBS, wherein the styrene content in the formed mixed star SBS is (25-35) by weight; further preferably, the star SBS with molecular weight (16-19) ten thousand and the star SBS with molecular weight (20-25) ten thousand are each independently selected from long hong 3611 and/or Li Changrong 3411; further preferably, the star SBS with the molecular weight of (16-19) ten thousand and the star SBS with the molecular weight of (20-25) ten thousand are respectively independent in a powder state or a high expansion state.
In the invention, the blend star SBS is used as a modifier, has higher compatibility and stability in the high-strength elastic high polymer modified asphalt, and endows the waterproof coiled material formed by the high-strength elastic high polymer modified asphalt with high-strength elasticity. In the invention, the urea formaldehyde modified enzymatic hydrolysis lignin can further strengthen the tensile property of the elastomer formed by the blended star-shaped SBS, because: the phenolic hydroxyl groups in the urea formaldehyde modified enzymatic hydrolysis lignin and the double bonds of SBS form hydrogen bond action, so that the interaction between molecular chains in the material is realized, meanwhile, the urea formaldehyde modified enzymatic hydrolysis lignin has small damage to the two-phase structure after filling the SBS, the tensile property of the elastomer is improved, and the elastomer has high elasticity.
According to the present invention, preferably, the blended linear SIS (styrene-isoprene-styrene block copolymer) comprises linear SIS having a molecular weight of (15 to 20) ten thousand and linear SIS having a molecular weight of (20 to 25) ten thousand, and the ratio of the amount of linear SIS having a molecular weight of (15 to 20) ten thousand to the amount of linear SIS having a molecular weight of (20 to 25) ten thousand is 1: (0.8-1.2).
In the invention, as a preferable scheme, the dosage ratio of the linear SIS with the molecular weight of (15-20) ten thousands to the linear SIS with the molecular weight of (20-25) ten thousands is 1:1, the linear SIS with the molecular weight of (15-20) ten thousands and the linear SIS with the molecular weight of (20-25) ten thousands are mixed, sheared, ground into powder, and after uniform blending, the mixed linear SIS is prepared by secondary granulation, and the styrene content in the formed mixed linear SIS is (10-25) by weight; further preferably, the linear SIS having a molecular weight of (15-20) ten thousand and the linear SIS having a molecular weight of (20-25) ten thousand are each independently selected from Li Changrong 5516 and/or Koteng D1113P.
In the invention, the blend linear SIS has the characteristics of low modulus, good elasticity, small melt viscosity and the like, and can obviously improve the elasticity and the adhesive property of the modified asphalt.
According to the present invention, preferably, the reinforcing agent is used for further improving the strength of a waterproof roll prepared from a high-elastic-type high polymer modified asphalt, and comprises an inorganic reinforcing agent and an organic reinforcing agent, and the use ratio of the inorganic reinforcing agent to the organic reinforcing agent is 1: (0.8-1.2); preferably, the inorganic reinforcing agent is carbon black and/or white carbon black; preferably, the organic reinforcing agent is at least one of coumarone indene resin, phenolic resin and coumarone resin.
According to the present invention, preferably, the crosslinking agent is ethylene glycol dimethacrylate. In the invention, the cross-linking agent can fully swell the blending star-shaped SBS and generate cross-linking reaction to form a net structure, thereby ensuring the high-temperature stability of the high-elastic high polymer modified asphalt.
According to the present invention, preferably, the stabilizer is selected from at least one of a light stabilizer, an ultraviolet absorber, and an anti-aging agent.
According to the present invention, preferably, the inorganic filler is at least one of talc, fly ash and light calcium; the particle size of the inorganic filler is less than or equal to 200 meshes.
According to the invention, preferably, the urea formaldehyde modified enzymatic lignin is obtained by modifying enzymatic lignin with NaOH, formaldehyde and urea. Further preferably, the preparation method of urea formaldehyde modified enzymatic hydrolysis lignin comprises the following steps:
s1: mixing and stirring the enzymolysis lignin subjected to the drying treatment with NaOH aqueous solution uniformly to obtain a dissolution mixture;
s2: uniformly mixing the dissolved mixture with formaldehyde aqueous solution, and heating, refluxing and stirring to obtain a first product;
s3: and mixing and reacting the first product with urea to obtain a second product, regulating the pH value by hydrochloric acid, standing for precipitation, centrifugally washing for multiple times, and drying to obtain the urea formaldehyde modified enzymatic hydrolysis lignin.
Preferably, in step S1,
the NaOH aqueous solution is NaOH aqueous solution with the mass concentration of (1.5-2.5 percent);
the dosage ratio of the enzymolysis lignin after the drying treatment to the NaOH aqueous solution is 1: (14.5-15.5) g/mL.
Preferably, in step S2,
the formaldehyde aqueous solution is formaldehyde aqueous solution with the mass concentration of (30-50)%;
the volume ratio of the formaldehyde aqueous solution to the NaOH aqueous solution is 11: (70-80);
the heating is water bath heating at the temperature of (75-85); the reflux stirring time is (0.8-1.2) h.
Preferably, in accordance with the present invention, in step S3,
the dosage ratio of the urea to the enzymolysis lignin subjected to the drying treatment is (15-17): 1, a step of;
the hydrochloric acid is hydrochloric acid solution with the mass concentration of (11.5-12.5 percent);
the pH value of the second product is 2.5-3.5;
the temperature of the drying treatment is (75-85) DEG C.
In the invention, the enzymatic lignin is prepared according to the method of paper 'novel polyurethane auxiliary agent-enzymatic lignin development, cheng Xian, liu Xiaoling, yanqiao'.
In the invention, the preparation method of urea formaldehyde modified enzymatic hydrolysis lignin comprises the following steps: weighing 30g of dried enzymolysis lignin, putting the enzymolysis lignin into a three-necked bottle containing 450ml of 2% NaOH aqueous solution, and stirring for 15min to completely dissolve the enzymolysis lignin in the NaOH solution to obtain a dissolution mixture; adding 66mL of formaldehyde aqueous solution into the dissolution mixture, heating in a water bath to 80 ℃, and carrying out reflux stirring reaction for 1h to obtain a first product; adding 48.6g of urea into the first product, and continuing the reaction for 1h; slowly adding 12% hydrochloric acid solution after the reaction is finished, regulating the pH value to about 3, standing for precipitation, pouring out supernatant, centrifugally separating sediment at the lower layer for 3 times (aiming at washing the sediment), and then placing the centrifugally separated product into a drying box for drying at 80 ℃ until the weight is constant, thus obtaining the urea formaldehyde modified enzymatic hydrolysis lignin.
The second aspect of the invention provides a preparation method of the high-elasticity high polymer modified asphalt, which comprises the following steps:
(1) Uniformly mixing the heated petroleum asphalt with the blending star-shaped SBS, the blending linear SIS and the urea formaldehyde modified enzymatic hydrolysis lignin, and heating and homogenizing to obtain a homogenized product;
(2) And (3) mixing and stirring the homogenized product, the auxiliary agent and the inorganic filler uniformly at the temperature after the temperature is increased in the step (1) to obtain the high-elasticity high polymer modified asphalt.
According to the present invention, preferably, the heated petroleum asphalt is (160-165) °c; the temperature after the temperature rise in the step (1) is (180-195). In the invention, as a preferable scheme, the preparation method of the high-elasticity high polymer modified asphalt comprises the following steps: heating the petroleum asphalt to (160-165) DEG C, then uniformly mixing the heated petroleum asphalt with the blended star SBS, the blended linear SIS and the urea formaldehyde modified enzymatic lignin, wherein the swelling time of the blended star SBS, the blended linear SIS and the urea formaldehyde modified enzymatic lignin in the petroleum asphalt is (10-15) min, and then homogenizing (1.5-2) h at (185-195) DEG C to obtain a homogenized product; mixing and stirring the homogenized, the reinforcing agent and the crosslinking agent for 30-50 min at the temperature of 180-190 ℃ to obtain a first mixture; mixing and stirring (10-20) the first mixture and the stabilizer for a min to obtain a second mixture; and mixing and stirring (50-60) the second mixture and the inorganic filler for a min to obtain the high-elastic high polymer modified asphalt.
The third aspect of the invention provides a waterproof coiled material, which comprises an upper cladding isolating layer, an upper surface modified asphalt coating layer, a middle reinforcement layer, a lower surface modified asphalt coating layer and a lower cladding isolating layer which are sequentially arranged from top to bottom;
the upper surface modified asphalt coating material and the lower surface modified asphalt coating material are respectively and independently the high-elasticity high polymer modified asphalt.
According to the present invention, it is preferable that the upper cladding insulating layer material is fine sand having a mohs hardness of 6.5 to 7.5 and a particle diameter of (0.3 to 0.9) mm, and/or carborundum having a mohs hardness of 7.5 to 8 and a particle size of (100 to 140).
According to the present invention, it is preferable that the underlying barrier layer material is quartz sand having a mohs hardness of 7.5 to 8, a particle size of (100 to 140) mesh, and/or a polyethylene film having a softening point of (100 to 115).
According to the invention, the base of the middle reinforcement layer is preferably a polyester base, and the waterproof coiled material can be widely applied to areas with large deformation of a waterproof structure or wide use environment temperature range, preferably a longitudinal reinforced polyester base.
According to the present invention, preferably, the upper surface modified asphalt coating layer has a thickness of (1.0 to 1.5) mm.
According to the present invention, preferably, the thickness of the lower surface modified asphalt coating layer is (1.0-2.0) mm.
According to the invention, the intermediate reinforcement layer preferably has a thickness of (1.0-1.6) mm and a grammage of(200-310)g/m 2 。
According to the present invention, preferably, the thickness of the waterproof roll is (3.7-4.2) mm.
According to the present invention, preferably, the waterproof roll has an elastic recovery rate of (85-95)%.
The fourth aspect of the invention provides a preparation method of the waterproof coiled material, which comprises the following steps:
s1: coating the upper surface modified asphalt coating material and the lower surface modified asphalt coating material on the upper surface and the lower surface of the middle reinforcement layer respectively, and cooling to obtain a modified asphalt reinforcement layer;
s2: coating the upper surface of the modified asphalt reinforcement layer with the upper coating isolation layer material; carrying out water absorption and blow-drying treatment on the lower surface of the modified asphalt reinforcement layer, and coating a lower coating isolation layer material on the lower surface of the modified asphalt reinforcement layer to obtain a coiled material precursor;
s3: and (3) sequentially carrying out roller cooling shaping, conveying and packaging machine winding and cutting treatment on the coiled material precursor to obtain the waterproof coiled material.
In the present invention, as a preferred embodiment, in step S1, the method for preparing the intermediate reinforcement layer includes: sequentially spreading, drying, presoaking and squeezing the tire base to obtain the intermediate reinforcement layer; further preferably: the damping driving frequency of the unfolding treatment is synchronous with the frequency of the whole production line of the preparation method of the high-strength elastic high polymer modified asphalt waterproof coiled material; the drying treatment adopts an electromagnetic heating air conduction heating mode, and the drying temperature is (180-190); the method for pre-soaking comprises the following steps: immersing the dried tire base in a pre-immersing tank to enable the dried tire base to be immersed in pre-immersing asphalt; the temperature of the pre-soaking treatment is (180-200) DEG C, and the viscosity of the pre-soaking asphalt at 180 ℃ is (6-12) dPa.S; squeezing excess impregnating asphalt by utilizing the squeezing treatment; the device used for respectively coating the upper surface modified asphalt coating layer material and the lower surface modified asphalt coating layer material on the upper surface and the lower surface of the middle reinforcement layer comprises an oil coating tank; the coating temperature of the upper and lower surface modified asphalt coating materials is (165-185) DEG C; the coating temperature of the upper surface modified asphalt coating material and the coating temperature of the lower surface modified asphalt coating material are respectively and independently (95-105) DEG C and (80-100) DEG C; the cooling mode is circulating water cooling, and the device for cooling comprises a cooling water bed, wherein the cooling temperature is (30-60) DEG C. In the present invention, it is preferable that the upper surface-modified asphalt coating material and the lower surface-modified asphalt coating material are coated on the upper and lower surfaces of the intermediate reinforcement layer, respectively, and then the intermediate reinforcement layer is cooled in a cooling water bed.
In the present invention, preferably, in step S2, the coating temperature of the upper-cladding insulation layer material is (95-105) °c; the device for water absorption treatment is a PU sponge water absorption roller, the length of the PU sponge water absorption roller is (1-1.1) m, and the diameter of the PU sponge water absorption roller is (5-15) cm; the drying treatment adopts an electromagnetic heating air conduction heating mode, and the drying temperature is (80-100).
The fifth aspect of the invention provides the application of the waterproof coiled material in an airport pavement structural system.
The sixth aspect of the invention provides an airport pavement structure system, which comprises a precast concrete layer, a waterproof coiled material, a base adhesive layer and a concrete layer which are sequentially arranged from top to bottom;
the waterproof coiled material is the waterproof coiled material.
According to the invention, the system is preferably a prefabricated airport runway construction system.
The technical scheme of the invention has the following beneficial effects:
(1) The waterproof coiled material prepared by the high-strength elastic high polymer modified asphalt has excellent elastic recovery performance, dimensional stability and durability, and greatly improves the wear resistance, static load resistance, shearing resistance, puncture resistance, perforation resistance and service life of the conventional modified asphalt waterproof coiled material.
(2) The waterproof coiled material can be applied to the prefabricated airport pavement structure system in a compound way, plays a role in up-down buffering, and creates a novel prefabricated airport pavement structure system with high strength, high elasticity, high wear resistance and high durability.
(3) The waterproof coiled material can be subjected to hot melting construction, oil is easy to be discharged in the construction application process, the construction efficiency is high, and the labor cost is saved in construction; can also be used for cold bonding construction, is safe and environment-friendly, and saves energy consumption. The waterproof coiled material can be used as a waterproof material and a dampproof cushion layer, is not only suitable for an assembled airport runway project, but also suitable for important waterproof engineering projects, in particular to waterproof engineering such as railways, bridge tunnels and the like.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular descriptions of exemplary embodiments of the invention as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the invention.
Fig. 1 shows a schematic structural view of a waterproof roll provided by the invention.
Fig. 2 shows a schematic structural diagram of an airport pavement structural system provided by the invention.
The reference numerals are explained as follows:
1-an upper cladding isolation layer; 2-upper surface modified asphalt coating; 3-an intermediate reinforcement layer; 4-a lower surface modified asphalt coating; 5-a lower cladding isolation layer; 6-waterproof coiled materials; 7-a concrete layer; 8-prefabricating a concrete layer; 9-a base layer adhesive layer.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the preferred embodiments of the present invention are described below, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Example 1
The embodiment provides high-elasticity high polymer modified asphalt, which comprises the following components in parts by weight: 55 parts of 90# asphalt, 12 parts of 200# asphalt, 15 parts of blending star-type SBS, 3 parts of blending linear SIS, 3 parts of urea formaldehyde modified enzymatic lignin, 2 parts of a reinforcing agent (prepared by mixing carbon black and coumarone indene resin according to a ratio of 1:1), 4 parts of crosslinking agent glycol dimethacrylate, 2020 1 part of light stabilizer and 5 parts of 200-mesh light calcium carbonate;
the 90# asphalt and the 200# asphalt are respectively and independently selected from venezuela Ma Rui crude oil;
the blending star SBS is prepared by mixing star SBS with the molecular weight of (16-19) ten thousand and star SBS with the molecular weight of (20-25) ten thousand according to the dosage ratio of 1:3, shearing, grinding, blending uniformly and then granulating for the second time. The star SBS with the molecular weight of (16-19) ten thousands and the star SBS with the molecular weight of (20-25) ten thousands are selected from Li Changrong 3411.
The blend linear SIS (styrene-isoprene-styrene block copolymer) is prepared by mixing (15-20) ten thousand linear SIS with (20-25) ten thousand linear SIS according to the dosage ratio of 1:1, shearing, grinding, blending uniformly and granulating for the second time. The linear SIS with the molecular weight of (15-20) ten thousand and the linear SIS with the molecular weight of (20-25) ten thousand are selected from Li Changrong 5516.
The preparation method of the urea formaldehyde modified enzymatic hydrolysis lignin comprises the following steps: weighing 30g of dried enzymolysis lignin, putting the enzymolysis lignin into a three-necked bottle containing 450ml of 2% NaOH aqueous solution, and stirring for 15min to completely dissolve the enzymolysis lignin in the NaOH solution to obtain a dissolution mixture; adding 66mL of formaldehyde aqueous solution into the dissolution mixture, heating in a water bath to 80 ℃, and carrying out reflux stirring reaction for 1h to obtain a first product; adding 48.6g of urea into the first product, and continuing the reaction for 1h; slowly adding 12% hydrochloric acid solution after the reaction is finished, regulating the pH value to about 3, standing for precipitation, pouring out supernatant, centrifugally separating sediment at the lower layer for 3 times (aiming at washing the sediment), and then placing the centrifugally separated product into a drying box for drying at 80 ℃ until the weight is constant, thus obtaining the urea formaldehyde modified enzymatic hydrolysis lignin.
The preparation method of the high-elasticity high polymer modified asphalt comprises the following steps: heating 90# asphalt and 200# asphalt to (160-165) DEG C, then uniformly mixing the heated petroleum asphalt with the blended star SBS, the blended linear SIS and the urea formaldehyde modified enzymatic lignin, wherein the swelling time of the blended star SBS, the blended linear SIS and the urea formaldehyde modified enzymatic lignin in the petroleum asphalt is 10min, and then homogenizing for 1.5h at (185-195) DEG C to obtain a homogenized product; mixing and stirring the homogenized, the reinforcing agent and the crosslinking agent for 30min at the temperature of (180-190) ℃ to obtain a first mixture; mixing and stirring the first mixture and the stabilizer for 10min to obtain a second mixture; and mixing and stirring the second mixture and the inorganic filler for 50min to obtain the high-elastic high polymer modified asphalt.
In this embodiment, a waterproof coiled material is prepared by using the prepared high-elasticity high-polymer modified asphalt, and as shown in fig. 1, the waterproof coiled material comprises an upper surface isolation layer 1, an upper surface modified asphalt coating layer 2, a middle reinforcement layer 3, a lower surface modified asphalt coating layer 4 and a lower surface isolation layer 5 which are sequentially arranged from top to bottom; wherein, the liquid crystal display device comprises a liquid crystal display device,
the upper cladding isolation layer material is fine sand with the Mohs hardness of 7 and the grain diameter of 0.6 mm;
the lower cladding isolation layer material is quartz sand with Mohs hardness of 8 and particle size of 140 meshes;
the base of the middle reinforcement layer is national standard II base of Tianding non-woven fabric Limited company, the thickness is 1.2mm, and the gram weight is 250g/m 2 ；
The thickness of the upper surface modified asphalt coating layer is 1.2mm;
the thickness of the lower surface modified asphalt coating layer is 1.5mm;
the thickness of the waterproof coiled material is 4.0mm.
Example 2
The present embodiment provides a waterproof coiled material, and the difference between the present embodiment and embodiment 1 is that:
the high-strength elastic high polymer modified asphalt comprises the following components in parts by weight: 55 parts of 90# asphalt, 12 parts of 200# asphalt, 15 parts of blended star-shaped SBS, 3 parts of blended linear SIS, 2 parts of urea formaldehyde modified enzymatic lignin, 2 parts of a reinforcing agent (prepared by mixing carbon black and coumarone indene resin according to a ratio of 1:1), 4 parts of cross-linking agent ethylene glycol dimethacrylate, 1 part of light stabilizer 2020 and 6 parts of 200-mesh light calcium carbonate.
Example 3
The present embodiment provides a waterproof coiled material, and the difference between the present embodiment and embodiment 1 is that:
the high-strength elastic high polymer modified asphalt comprises the following components in parts by weight: 55 parts of 90# asphalt, 12 parts of 200# asphalt, 15 parts of blended star-shaped SBS, 3 parts of blended linear SIS, 3 parts of urea formaldehyde modified enzymatic lignin, 1 part of a reinforcing agent (prepared by mixing carbon black and coumarone indene resin according to a ratio of 1:1), 4 parts of crosslinking agent ethylene glycol dimethacrylate, 2020 2 parts of light stabilizer and 5 parts of 200-mesh light calcium carbonate.
Example 4
The embodiment provides a prefabricated airport pavement structure system, which is shown in fig. 2, and comprises a prefabricated concrete layer 8, a waterproof coiled material 6, a base adhesive layer 9 and a concrete layer 7 which are sequentially arranged from top to bottom;
the waterproof coiled material is the waterproof coiled material in the embodiment 1.
Comparative example 1
This comparative example provides a waterproof roll, and the difference between this comparative example and example 1 is only that:
in the high-strength elastic high polymer modified asphalt: 18 parts of blending star-shaped SBS, 0 part of blending linear SIS and the other materials and parts by weight thereof are unchanged.
Comparative example 2
This comparative example provides a waterproof roll, and the difference between this comparative example and example 1 is only that:
in the high-strength elastic high polymer modified asphalt: 0 part of blending star-shaped SBS, 18 parts of blending linear SIS and the other materials in parts by weight are unchanged.
Comparative example 3
This comparative example provides a waterproof roll, and the difference between this comparative example and example 1 is only that:
in the high-strength elastic high polymer modified asphalt:
the star SBS is non-blending star SBS, the non-blending star SBS is star SBS with molecular weight of (16-19) ten thousand, and is selected from Li Changrong 3411.
The linear SIS is non-blended linear SIS, the non-blended linear SIS is linear SIS with a molecular weight of (15-20) ten thousand, and the linear SIS is selected from Li Changrong 5516.
Other substances and parts by weight thereof are unchanged.
Comparative example 4
This comparative example provides a waterproof roll, and the difference between this comparative example and comparative example 3 is only that:
in the high-strength elastic high polymer modified asphalt: 18 parts of non-blending star-shaped SBS, 0 part of non-blending linear SIS and the other materials in parts by weight are unchanged.
Comparative example 5
This comparative example provides a waterproof roll, and the difference between this comparative example and comparative example 3 is only that:
in the high-strength elastic high polymer modified asphalt: 0 part of non-blending star-shaped SBS, 18 parts of non-blending linear SIS and the weight parts of other substances are unchanged.
Comparative example 6
This comparative example provides a waterproof roll, and the difference between this comparative example and comparative example 3 is only that:
in the high-strength elastic high polymer modified asphalt: 3 parts of urea formaldehyde modified enzymatic hydrolysis lignin is changed into 1 part, 1 part of light stabilizer 2020 is changed into 3 parts, and other substances and parts by weight are unchanged.
Comparative example 7
This comparative example provides a waterproof roll, and the difference between this comparative example and comparative example 3 is only that:
in the high-strength elastic high polymer modified asphalt: the reinforcing agent is changed from 2 parts to 0 parts, the light stabilizer 2020 is changed from 1 part to 3 parts, and other substances and parts by weight are unchanged.
Test case
The present test example performs physical and application performance tests on the waterproof rolls of examples 1 to 3 and the waterproof rolls of comparative examples 1 to 7, wherein: peel strength to base layer was evaluated with reference to JC/T1069-2008; shear performance was evaluated with reference to JC/T1069-2008 and GB/T328.22-2007; the static load resistance is evaluated according to GB/T328.25-2007; impact resistance was evaluated according to GB/T328.24-2007; puncture resistance was evaluated as per appendix B in CJ/T234-2006; the elastic recovery was evaluated with reference to NB/SH/T0737-2014, and the results are shown in Table 1.
TABLE 1
As can be seen by comparing table 1:
compared with the waterproof coiled materials of comparative examples 1-7, the waterproof coiled materials of examples 1-3 have greatly improved peel strength with a base layer, static load resistance, shearing resistance and impact resistance;
as can be seen from the comparison of example 1 with comparative examples 1 and 2, the blended star SBS and the blended linear SBS can improve the overall strength of the coil;
the elastic recovery rate of the waterproof coiled material is sorted as follows: example 1> example 2> example 3> comparative example 2> comparative example 1, the elastic recovery rate of the waterproof roll of comparative example 3 was superior to that of comparative examples 4 to 7. The blending star-shaped SBS and the blending linear SBS can improve the high elasticity of coiled materials, and the urea formaldehyde modified enzymatic hydrolysis lignin is added to further achieve a better effect.
As can be seen from Table 1, the high-strength elastic high-polymer modified asphalt can improve the physical properties and application performance of the waterproof coiled material, has better application applicability, can solve the problems that hard objects may be damaged and the risk of being pierced and scratched by steel bars may exist in the construction of the waterproof coiled material, can prevent water and moisture, can realize hot melting construction, can reach a waterproof grade I, can also serve as a cushion layer, is subjected to cold bonding construction, and is safe and environment-friendly. The method is applied to airport pavement structural layers, moistureproof projects and the like, a basement bottom plate is pre-paved with an anti-sticking waterproof system, and the high-iron bridge tunnel waterproof project has a wide prospect.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described.
Claims (14)
1. The high-elasticity high polymer modified asphalt is characterized by comprising the following components in parts by weight: 60-80 parts of petroleum asphalt, 5-15 parts of blending star-shaped SBS, 1-6 parts of blending linear SIS, 2-4 parts of urea formaldehyde modified enzymatic hydrolysis lignin, 3.5-14 parts of auxiliary agent and 5-10 parts of inorganic filler;
the petroleum asphalt comprises the following components in parts by weight: 90# asphalt (50-60) parts and 200# asphalt (10-20);
the auxiliary agent comprises the following components in parts by weight: 1-4 parts of reinforcing agent, 2-5 parts of cross-linking agent and 0.5-5 parts of stabilizing agent;
the blend star SBS comprises star SBS with the molecular weight of (16-19) ten thousands and star SBS with the molecular weight of (20-25) ten thousands, wherein the dosage ratio of the star SBS with the molecular weight of (16-19) ten thousands to the star SBS with the molecular weight of (20-25) ten thousands is 1: (2.5-3.5);
the blend linear SIS comprises linear SIS with a molecular weight of (15-20) ten thousands and linear SIS with a molecular weight of (20-25) ten thousands, wherein the dosage ratio of the linear SIS with a molecular weight of (15-20) ten thousands to the linear SIS with a molecular weight of (20-25) ten thousands is 1: (0.8-1.2);
the urea formaldehyde modified enzymatic hydrolysis lignin is obtained by modifying enzymatic hydrolysis lignin by utilizing NaOH, formaldehyde and urea;
the reinforcing agent comprises an inorganic reinforcing agent and an organic reinforcing agent, and the dosage ratio of the inorganic reinforcing agent to the organic reinforcing agent is 1: (0.8-1.2); the inorganic reinforcing agent is carbon black and/or white carbon black; the organic reinforcing agent is at least one of coumarone indene resin, phenolic resin and coumarone resin;
the cross-linking agent is ethylene glycol dimethacrylate;
the stabilizer is at least one selected from light stabilizer, ultraviolet absorber and anti-aging agent;
the inorganic filler is at least one of talcum powder, fly ash and light calcium; the particle size of the inorganic filler is less than or equal to 200 meshes.
2. The high-elastic high polymer modified asphalt according to claim 1, wherein the preparation method of urea formaldehyde modified enzymatic hydrolysis lignin comprises the following steps:
s1: mixing and stirring the enzymolysis lignin subjected to the drying treatment with NaOH aqueous solution uniformly to obtain a dissolution mixture;
s2: uniformly mixing the dissolved mixture with formaldehyde aqueous solution, and heating, refluxing and stirring to obtain a first product;
s3: and mixing and reacting the first product with urea to obtain a second product, regulating the pH value by hydrochloric acid, standing for precipitation, centrifugally washing for multiple times, and drying to obtain the urea formaldehyde modified enzymatic hydrolysis lignin.
3. The high-elastic high polymer modified asphalt according to claim 2, wherein, in step S1,
the NaOH aqueous solution is NaOH aqueous solution with the mass concentration of (1.5-2.5 percent);
the dosage ratio of the enzymolysis lignin after the drying treatment to the NaOH aqueous solution is 1: (14.5-15.5) g/mL.
4. The high-elastic high polymer modified asphalt according to claim 2, wherein, in step S2,
the formaldehyde aqueous solution is formaldehyde aqueous solution with the mass concentration of (30-50)%;
the volume ratio of the formaldehyde aqueous solution to the NaOH aqueous solution is 11: (70-80);
the heating is water bath heating at the temperature of (75-85); the reflux stirring time is (0.8-1.2) h.
5. The high-elastic high polymer modified asphalt according to claim 2, wherein, in step S3,
the dosage ratio of the urea to the enzymolysis lignin subjected to the drying treatment is (15-17): 1, a step of;
the hydrochloric acid is hydrochloric acid solution with the mass concentration of (11.5-12.5 percent);
the pH value of the second product is 2.5-3.5;
the temperature of the drying treatment is (75-85) DEG C.
6. The method for producing a high-strength elastic polymer modified asphalt according to any one of claims 1 to 5, characterized in that the method comprises the steps of:
(1) Uniformly mixing the heated petroleum asphalt with the blending star-shaped SBS, the blending linear SIS and the urea formaldehyde modified enzymatic hydrolysis lignin, and heating and homogenizing to obtain a homogenized product;
(2) And (3) mixing and stirring the homogenized product, the auxiliary agent and the inorganic filler uniformly at the temperature after the temperature is increased in the step (1) to obtain the high-elasticity high polymer modified asphalt.
7. The method for producing a high-elastic high-polymer modified asphalt according to claim 6, wherein the heated petroleum asphalt is (160-165) °c; the temperature after the temperature rise in the step (1) is (180-195).
8. The waterproof coiled material is characterized by comprising an upper cladding isolating layer, an upper surface modified asphalt coating layer, a middle reinforcement layer, a lower surface modified asphalt coating layer and a lower cladding isolating layer which are sequentially arranged from top to bottom;
the upper surface modified asphalt coating material and the lower surface modified asphalt coating material are each independently the high-elasticity high-polymer modified asphalt of any one of claims 1 to 5.
9. The waterproof roll as claimed in claim 8, wherein,
the upper cladding isolation layer material is fine sand with the Mohs hardness of 6.5-7.5 and the grain diameter of (0.3-0.9) mm and/or carborundum with the Mohs hardness of 7.5-8 and the grain size of (100-140);
the lower cladding isolation layer material is quartz sand with the Mohs hardness of 7.5-8 and the particle size of (100-140), and/or is a polyethylene film with the softening point of (100-115);
the tyre base of the middle reinforcement layer is a polyester tyre;
the thickness of the upper surface modified asphalt coating layer is (1.0-1.5) mm;
the thickness of the lower surface modified asphalt coating layer is (1.0-2.0) mm;
the thickness of the intermediate reinforcement layer is (1.0-1.6) mm, and the gram weight is (200-310) g/m 2 ；
The thickness of the waterproof coiled material is (3.7-4.2) mm;
the elastic recovery rate of the waterproof coiled material is (85-95)%.
10. The waterproof roll as claimed in claim 9, wherein,
the tyre base of the middle reinforcement layer is a longitudinal reinforced polyester tyre.
11. The method for producing a waterproof roll according to any one of claims 8 to 10, characterized in that the method comprises the steps of:
s1: coating the upper surface modified asphalt coating material and the lower surface modified asphalt coating material on the upper surface and the lower surface of the middle reinforcement layer respectively, and cooling to obtain a modified asphalt reinforcement layer;
s2: coating the upper surface of the modified asphalt reinforcement layer with the upper coating isolation layer material; carrying out water absorption and blow-drying treatment on the lower surface of the modified asphalt reinforcement layer, and coating a lower coating isolation layer material on the lower surface of the modified asphalt reinforcement layer to obtain a coiled material precursor;
s3: and (3) sequentially carrying out roller cooling shaping, conveying and packaging machine winding and cutting treatment on the coiled material precursor to obtain the waterproof coiled material.
12. Use of a water-repellent roll according to any one of claims 8-10 in an airport runway construction system.
13. An airport pavement structure system is characterized by comprising a precast concrete layer, a waterproof coiled material, a base course bonding layer and a concrete layer which are sequentially arranged from top to bottom;
the waterproof coiled material is the waterproof coiled material according to any one of claims 8 to 10.
14. The airport runway structure system of claim 13 wherein the system is a prefabricated assembled airport runway structure system.
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| CN104945919B (en) * | 2015-07-24 | 2017-06-23 | 湖北国创高新材料股份有限公司 | Pouring asphalt binder and preparation method thereof |
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