High-performance modified asphalt self-adhesive material

Abstract

The invention discloses a high-performance modified asphalt self-adhesive glue, and relates to the technical field of high polymer materials, and the high-performance modified asphalt self-adhesive glue is characterized by comprising the following components by weight: 22-32 parts of matrix asphalt; 3-8 parts of tackifying resin; 2-5 parts of a rubber powder modifier; 0.5 to 1.2 parts of polyether modified silicone oil; 0.5 to 1.2 parts of an auxiliary agent; and 15-24 parts of a filler. Compared with the prior art, the high-performance modified asphalt self-adhesive material has the advantages that the chemical property of matrix asphalt is improved through activation, the compatibility is further improved, the polyether modified silicone oil is combined to achieve the effect of reducing surface tension so as to promote rapid fusion and rapid bonding, and the high-performance modified asphalt self-adhesive material has the effects of high initial adhesion performance and high physical and mechanical properties.

Description

Technical Field

[0001] The invention relates to the technical field of polymer materials, and more specifically to a high-performance modified asphalt self-adhesive material. Background Art

[0002] With the development of modern science and technology and the construction industry, people's requirements for the quality and construction of waterproof materials are constantly improving, and the application of some high-performance, environmentally friendly waterproof materials in engineering projects is increasing year by year. Self-adhesive polymer modified asphalt waterproofing membranes have become safer and more reliable due to their unique construction convenience and adaptability to the base layer, and have been actively promoted and applied in China. At the same time, in municipal roads, bridges and other construction projects, asphalt pavement has developed into the most important pavement structure in my country because of its high driving comfort, convenient maintenance and repair, and fast traffic speed.

[0003] In order to improve the performance of asphalt materials in the prior art, asphalt materials are usually modified. For example, the Chinese patent application document with publication number CN108641611A discloses a modified asphalt self-adhesive material, a waterproof roll material and a preparation method thereof, wherein the modified asphalt self-adhesive material comprises petroleum asphalt, softening oil, shoe rubber powder, rubber modifier, tackifying resin, triethanolamine and inorganic filler, so that by adding triethanolamine that can effectively promote the coagulation of concrete, the self-adhesive modified asphalt roll material is quickly bonded to the cement of the concrete base surface, achieving a full bonding effect, thereby improving the waterproof effect of the concrete building.

[0004] However, while the modified asphalt self-adhesive material adds triethanolamine to promote rapid bonding between the material and cement, the residual triethanolamine has the problem of corrosiveness and affects the physical and chemical properties of asphalt, thereby damaging the stability of the asphalt structure, which leads to the service life and use effect of the asphalt material needing to be improved. Summary of the invention

[0005] In view of this, the purpose of this application is to provide a high-performance modified asphalt self-adhesive material to achieve the purpose of significantly improving the initial adhesion performance and physical and mechanical properties. The specific scheme is as follows: A high-performance modified asphalt self-adhesive material comprises the following components in parts by weight: 22-32 parts of base asphalt; 3-8 parts of tackifying resin; 2-5 parts of rubber powder modifier; Polyether modified silicone oil 0.5-1.2 parts; Additives 0.5-1.2 parts; 15-24 parts of filler.

[0006] Preferably, the tackifying resin is one of terpene resin, C9 petroleum resin, coumarone resin, Escorez tackifying resin or SH115L tackifying resin.

[0007] Preferably: the auxiliary agent is calcium ricinoleate, zinc stearate or zinc ricinoleate.

[0008] Preferably, the filler is talc or bentonite.

[0009] Preferably: the base asphalt has a 25°C needle penetration / (0.1mm) of 76 and a softening point of 51°C.

[0010] Preferably, the rubber powder modifier is an SBS modifier or an SBR modifier.

[0011] Preferably, the SBS modifier is an SBS modifier grafted with glycidyl methacrylate, and the grafting rate is 25.6%.

[0012] Preferably, the grafting method of the SBS modifier is to melt the SBS, add an antioxidant and stir evenly, then add active glycidyl methacrylate monomer and white oil and mix them to obtain the SBS modifier.

[0013] Preferably: it also includes a method for preparing a high-performance modified asphalt self-adhesive material, the method steps are as follows: Step 1, heating the base asphalt to 105-120°C and using ultrasonic activation to obtain activated asphalt; Step 2, mixing the activated asphalt with the polyether modified silicone oil, controlling the temperature to 125-130° C., and stirring evenly to obtain a mixed asphalt; Step 3, mixing the mixed asphalt with the rubber powder modifier and the additive, and heating to 150° C. and stirring for reaction for 0.5-1h to obtain the reaction asphalt; Step 4, mixing the reaction asphalt with the tackifying resin and the filler to obtain asphalt clinker; Step 5: Cool the asphalt clinker to room temperature and solidify it to form a shaped modified asphalt self-adhesive material.

[0014] Preferably, the ultrasonic wave is controlled to have a frequency of 20-50 kHz, an intensity of ≥0.55 W / cm, and a duration of 4-10 min.

[0015] It can be seen from the above scheme that the present application provides a high-performance modified asphalt self-adhesive material, which improves the chemical properties of the base asphalt by activation, thereby improving the compatibility, and combines polyether-modified silicone oil to achieve the effect of reducing surface tension to promote rapid fusion and rapid bonding, and makes the high-performance modified asphalt self-adhesive material have the effects of high initial adhesion and strong physical and mechanical properties. At the same time, when the SBS modifier grafted with glycidyl methacrylate is used, the base asphalt will obtain a high-performance modified asphalt self-adhesive material with significantly improved mechanical strength, effectively improved heat resistance, and improved bonding rate after the modification treatment. DETAILED DESCRIPTION

[0016] In order to make the technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0017] It should be mentioned that the polyether-modified silicone oil in the examples of the present application is a polyether-epoxy co-modified silicone oil purchased from Shandong Dayi Chemical Co., Ltd. The polyether-epoxy co-modified silicone oil has the effect of reducing surface tension to promote rapid fusion to achieve rapid bonding, and uses epoxy groups to promote bonding with the matrix asphalt to improve the mechanical strength of the high-performance modified asphalt self-adhesive compound, and the physical properties are significantly improved.

[0018] The high performance modified asphalt self-adhesive material of the present application will be described in detail below.

[0019] A high-performance modified asphalt self-adhesive material comprises, by weight, 22-32 parts of base asphalt, 3-8 parts of tackifying resin, 2-5 parts of rubber powder modifier, 0.5-1.2 parts of polyether modified silicone oil, 0.5-1.2 parts of auxiliary agent and 15-24 parts of filler.

[0020] Among them, the tackifying resin is one of terpene resin, C9 petroleum resin, coumarone resin, Escorez tackifying resin or SH115L tackifying resin. And in the embodiments of the present application, C9 petroleum resin is used as the tackifying resin. The auxiliary agent is calcium ricinoleate, zinc stearate or zinc ricinoleate. The filler can be selected as talcum powder or bentonite. Of course, other existing fillers that can improve the adhesion, heat resistance and atmospheric stability of asphalt glue can be used as fillers. They are not repeated here, and in the embodiments of the present application, talcum powder is used as filler. At the same time, the 25°C needle penetration / (0.1mm) of the base asphalt is 76, and the softening point is 51°C. The rubber powder modifier is an SBS modifier or an SBR modifier.

[0021] A method for preparing a high-performance modified asphalt self-adhesive material comprises the following steps: Step 1, heating the base asphalt to 105-120°C and using ultrasonic activation to obtain activated asphalt; Step 2, mixing the activated asphalt with the polyether modified silicone oil, controlling the temperature to 125-130° C., and stirring evenly to obtain a mixed asphalt; Step 3, mixing the mixed asphalt with the rubber powder modifier and the additive, and heating to 150° C. and stirring for reaction for 0.5-1h to obtain the reaction asphalt; Step 4, mixing the reaction asphalt with the tackifying resin and the filler to obtain asphalt clinker; Step 5: Cool the asphalt clinker to room temperature and solidify it to form a shaped modified asphalt self-adhesive material.

[0022] Preferably, the ultrasonic wave is controlled to have a frequency of 20-50 kHz, an intensity of ≥0.55 W / cm, and a duration of 4-10 min.

[0023] In order to further improve the bonding strength between the SBS modifier and the matrix asphalt, SBS grafted with glycidyl methacrylate can also be used as the SBS modifier, and the grafting rate is 25.6%.

[0024] The grafting method of the SBS modifier is to melt the SBS, add an antioxidant and stir evenly, then add active glycidyl methacrylate monomer and white oil and mix them to obtain the modified SBS. In the embodiment of the present application, the antioxidant used is the commercially available antioxidant 1010. Of course, other existing materials that can be used as antioxidants can be used, and the antioxidant mainly plays an antioxidant role.

[0025] Embodiment 1 A high-performance modified asphalt self-adhesive material comprises, by weight, 22 parts of base asphalt, 3 parts of C9 petroleum resin, 2 parts of SBS modifier, 0.5 parts of polyether modified silicone oil, 0.5 parts of calcium ricinoleate and 15 parts of talc.

[0026] Among them, the 25℃ needle penetration of the base asphalt is 76 / (0.1mm) and the softening point is 51℃.

[0027] A method for preparing a high-performance modified asphalt self-adhesive material comprises the following steps: Step 1, heat the base asphalt to 105°C, activate it with ultrasonic wave, control the ultrasonic wave frequency to 20kHz, the intensity to 0.55W / cm, and the time to 10min to obtain activated asphalt; Step 2, mixing the activated asphalt and the polyether modified silicone oil, controlling the temperature to 125° C., and stirring evenly to obtain a mixed asphalt; Step 3, mixing the mixed asphalt with the SBS modifier and calcium ricinoleate, and heating to 150° C. and stirring for reaction for 0.5 h to obtain a reaction asphalt; Step 4, mixing the reaction asphalt with C9 petroleum resin and talcum powder to obtain asphalt clinker; Step 5: Cool the asphalt clinker to room temperature and solidify it to form a shaped modified asphalt self-adhesive material.

[0028] Embodiment 2 A high-performance modified asphalt self-adhesive material comprises, by weight, 27 parts of base asphalt, 5 parts of C9 petroleum resin, 4 parts of SBS modifier, 0.9 parts of polyether modified silicone oil, 0.8 parts of zinc stearate and 20 parts of talc.

[0029] The additives are calcium ricinoleate, zinc stearate or zinc ricinoleate. The base asphalt has a 25°C needle penetration / (0.1mm) of 76 and a softening point of 51°C.

[0030] A method for preparing a high-performance modified asphalt self-adhesive material comprises the following steps: Step 1, heating the base asphalt to 115°C, using ultrasonic activation, controlling the ultrasonic frequency to 30kHz, the intensity to 0.65W / cm, and the time to 7min, to obtain activated asphalt; Step 2, mixing the activated asphalt and the polyether modified silicone oil, controlling the temperature to 127° C., and stirring evenly to obtain a mixed asphalt; Step 3, mixing the mixed asphalt with the SBS modifier and zinc stearate, and heating to 150° C. and stirring for reaction for 0.6 h to obtain a reaction asphalt; Step 4, mixing the reaction asphalt with C9 petroleum resin and talcum powder to obtain asphalt clinker; Step 5: Cool the asphalt clinker to room temperature and solidify it to form a shaped modified asphalt self-adhesive material.

[0031] Embodiment 3 A high-performance modified asphalt self-adhesive material comprises, by weight, 32 parts of base asphalt, 8 parts of C9 petroleum resin, 5 parts of SBS modifier, 1.2 parts of polyether modified silicone oil, 1.2 parts of zinc ricinoleate and 24 parts of talc.

[0032] Among them, the 25℃ needle penetration of the base asphalt is 76 / (0.1mm) and the softening point is 51℃.

[0033] A method for preparing a high-performance modified asphalt self-adhesive material comprises the following steps: Step 1, heating the base asphalt to 105-120°C, using ultrasonic activation, controlling the ultrasonic frequency to 50kHz, the intensity to 0.75W / cm, and the time to 4min to obtain activated asphalt; Step 2, mixing the activated asphalt and the polyether modified silicone oil, controlling the temperature to 130° C., and stirring evenly to obtain a mixed asphalt; Step 3, mixing the mixed asphalt with the SBS modifier and zinc ricinoleate, and heating to 150° C. and stirring for reaction for 1 hour to obtain a reaction asphalt; Step 4, mixing the reaction asphalt with C9 petroleum resin and talcum powder to obtain asphalt clinker; Step 5: Cool the asphalt clinker to room temperature and solidify it to form a shaped modified asphalt self-adhesive material.

[0034] Embodiment 4 The difference between Example 4 and Example 2 is that the SBS modifier in Example 4 is SBS grafted with glycidyl methacrylate, and the grafting rate is 25.6%.

[0035] The grafting method of the SBS modifier is to melt the SBS, add an antioxidant and stir evenly, then add active glycidyl methacrylate monomer and white oil and mix them to obtain the modified SBS. In the embodiment of the present application, the antioxidant used is the commercially available antioxidant 1010. Of course, other existing materials that can be used as antioxidants can be used, and the antioxidant mainly plays an antioxidant role.

[0036] Comparative Example 1 The difference between Comparative Example 1 and Example 4 is that silicone oil is used instead of polyether-modified silicone oil in Comparative Example 1.

[0037] Comparative Example 2 The difference between Comparative Example 2 and Example 4 is that the grafting rate of the SBS modifier used in Comparative Example 2 is 12.7%.

[0038] The performance test is based on using the high-performance modified asphalt self-adhesive material obtained in the above embodiments and comparative examples for waterproof membranes, and testing the peel strength (with aluminum plate), low-temperature flexibility, heat resistance and initial adhesion, and the test standards are as follows: 1. Peel strength: GB 23441-2009 "Self-adhesive polymer modified asphalt waterproofing membrane" 2. Low temperature flexibility: GB 23441-2009 "Self-adhesive polymer modified asphalt waterproofing membrane" 3. Heat resistance: GB 23441-2009 "Self-adhesive polymer modified asphalt waterproofing membrane" 4. Initial viscosity: Initial viscosity tester The performance test results are shown in Table 1 below: Table 1 Performance test results of Examples 1 to 4 and Comparative Examples 1 to 2

[0039] It can be seen from Table 1 above that Example 4 of the present application grafts the SBS modifier, so that the SBS modifier grafted with methacrylate glycidyl group and the base asphalt can synergistically improve the strength and achieve a significant improvement in heat resistance; in contrast, as shown in combination with Example 2, Example 4 and Comparative Example 1, the high-performance modified asphalt self-adhesive material obtained based on the adopted grafted modified SBS modifier, when replaced with silicone oil, has only a slight decrease in initial adhesion performance compared with Example 4, and even if the strength is reduced, the performance of the obtained high-performance modified asphalt self-adhesive material can still be higher than the high-performance modified asphalt self-adhesive material obtained in Example 2.

[0040] In summary, the present application provides a high-performance modified asphalt self-adhesive material, which improves the chemical properties of the base asphalt through activation, thereby improving the compatibility, and combines polyether-modified silicone oil to achieve the effect of reducing surface tension to promote rapid fusion and rapid bonding, and makes the high-performance modified asphalt self-adhesive material have the effects of high initial adhesion and strong physical and mechanical properties. At the same time, when the SBS modifier grafted with glycidyl methacrylate is used, the base asphalt will obtain a high-performance modified asphalt self-adhesive material with significantly improved mechanical strength, effectively improved heat resistance, and improved bonding rate after the modification treatment.

[0041] The "first", "second", "third", "fourth", etc. (if any) referred to in this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods or devices.

[0042] It should be noted that the descriptions involving "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0043] Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A high-performance modified asphalt self-adhesive material, characterized in that: The composition comprises the following components in parts by weight: 22-32 parts of base asphalt; 3-8 parts of tackifying resin; 2-5 parts of rubber powder modifier; Polyether modified silicone oil 0.5-1.2 parts; Additives 0.5-1.2 parts; 15-24 parts of filler.

2. A high performance modified asphalt self-adhesive material according to claim 1, characterized in that: The tackifying resin is one of terpene resin, C9 petroleum resin, coumarone resin, Escorez tackifying resin or SH115L tackifying resin.

3. The high-performance modified asphalt self-adhesive material according to claim 1, characterized in that: The auxiliary agent is calcium ricinoleate, zinc stearate or zinc ricinoleate.

4. The high-performance modified asphalt self-adhesive material according to claim 1, characterized in that: The filler is talc or bentonite.

5. The high-performance modified asphalt self-adhesive material according to claim 1, characterized in that: The base asphalt has a 25°C needle penetration / (0.1mm) of 76 and a softening point of 51°C.

6. The high-performance modified asphalt self-adhesive material according to claim 1, characterized in that: The rubber powder modifier is an SBS modifier or an SBR modifier.

7. A high performance modified asphalt self-adhesive material according to claim 6, characterized in that: The SBS modifier is an SBS modifier grafted with glycidyl methacrylate, and the grafting rate is 25.6%.

8. The high-performance modified asphalt self-adhesive material according to claim 7, characterized in that: The grafting method of the SBS modifier is to melt the SBS, add an antioxidant and stir evenly, then add active methacrylate glycidyl ester monomer and white oil and mix them to obtain the SBS modifier.

9. The high-performance modified asphalt self-adhesive material according to claim 1, characterized in that: Also included is a method for preparing a high-performance modified asphalt self-adhesive compound, the method comprising the following steps: Step 1, heating the base asphalt to 105-120°C and using ultrasonic activation to obtain activated asphalt; Step 2, mixing the activated asphalt with the polyether modified silicone oil, controlling the temperature to 125-130° C., and stirring evenly to obtain a mixed asphalt; Step 3, mixing the mixed asphalt with the rubber powder modifier and the additive, and heating to 150° C. and stirring for reaction for 0.5-1h to obtain the reaction asphalt; Step 4, mixing the reaction asphalt with the tackifying resin and the filler to obtain asphalt clinker; Step 5: Cool the asphalt clinker to room temperature and solidify it to form a shaped modified asphalt self-adhesive material.

10. A high performance modified asphalt self-adhesive material according to claim 9, characterized in that: The ultrasonic wave is controlled to have a frequency of 20-50 kHz, an intensity of ≥0.55 W / cm, and a duration of 4-10 min.

Images