Polymer adhesive as well as preparation method and application thereof

Abstract

The invention relates to the technical field of waterproof coiled materials. The invention discloses a polymer adhesive as well as a preparation method and application thereof. The polymer glue comprises the following raw materials: styrene resin, ethylene propylene diene monomer, naphthenic oil, SIS, SBS, silicone oil sustained-release microcapsules, light calcium carbonate, tackifying resin, a light stabilizer and an anti-aging agent. The preparation method comprises the following steps: putting styrene resin, ethylene propylene diene monomer, SIS, SBS, naphthenic oil, silicone oil slow-release microcapsules and light calcium carbonate into an internal mixer, and mixing to obtain a premix; and sequentially adding tackifying resin, a light stabilizer and an anti-aging agent into the premix, carrying out melt blending, and extruding to obtain the polymer adhesive. The invention also discloses an application of the polymer adhesive in a waterproof coiled material. The polymer adhesive prepared by the invention is excellent in aging resistance and excellent in adhesive property.

Description

Technical Field

[0001] The present application relates to the technical field of waterproof roll materials, and in particular to a polymer adhesive and a preparation method and application thereof. Background Art

[0002] As a waterproof material widely used in construction and infrastructure construction, the core function of waterproof membrane is to provide a continuous and reliable waterproof barrier to prevent moisture from penetrating into the structure of the building, ensure the integrity of the structure and extend its service life. However, although waterproof membrane has made great progress in design and manufacturing, it still has insufficient bonding performance in practical applications. The bonding performance of waterproof membrane is directly related to its long-term waterproof effect, which greatly limits the effectiveness and reliability of waterproof membrane. Therefore, it is urgent to develop a polymer adhesive with excellent aging resistance and excellent bonding performance. Summary of the invention

[0003] In order to solve at least one of the above technical problems and develop a polymer adhesive with excellent aging resistance and excellent bonding performance, the present application provides a polymer adhesive and a preparation method and application thereof.

[0004] On the one hand, the present application provides a polymer glue, whose raw material composition includes, by weight: 20-30 parts of styrene resin, 25-35 parts of EPDM rubber, 5-12 parts of cyclohexane oil, 8-12 parts of SIS, 9-16 parts of SBS, 7-15 parts of silicone oil sustained-release microcapsules, 10-20 parts of light calcium carbonate, 20-30 parts of tackifying resin, 3-5 parts of light stabilizer, and 1-3 parts of antioxidant.

[0005] By adopting the above technical scheme, the present application adopts specific raw materials and balances various components, and the prepared polymer adhesive has excellent bonding performance, weather resistance, long-term stability and durability. The present application selects styrene resin and EPDM rubber as the base polymers. Styrene resin can provide good bonding and cohesion, enhance the hardness and temperature resistance of the adhesive, and EPDM rubber can provide excellent flexibility, weather resistance and chemical resistance, enhance the elasticity of the adhesive, and help resist stress cracking; the addition of two thermoplastic elastomers, SIS and SBS, can improve the elasticity, toughness and adhesion of the polymer adhesive. SIS can improve the initial adhesion, which helps the waterproof membrane to quickly adhere to the base surface at the beginning of construction and provide an immediate bonding effect. SBS can provide better high temperature stability and low temperature toughness, ensuring the stable bonding and weather resistance of the waterproof membrane during long-term use; Silicone When the polymer glue is under stress, the oil slow-release microcapsules rupture and release silicone oil to help repair microcracks and improve the self-healing ability of the polymer glue; cyclohexane oil acts as a plasticizer to improve the fluidity and flexibility of the polymer glue, while helping to reduce costs; light calcium carbonate acts as a filler to increase the volume of the polymer glue, reduce costs, and also improve its mechanical strength and wear resistance; tackifying resins increase the viscosity of the polymer glue and improve adhesion to the substrate; light stabilizers protect the polymer glue from the effects of ultraviolet radiation, delay its aging process, and maintain long-term performance stability; antioxidants inhibit oxidation reactions in the polymer glue, prevent performance degradation due to oxidation, and extend its service life.

[0006] Optionally, the method for preparing the silicone oil sustained-release microcapsules comprises the following steps: B1. Add gum arabic to water, mix, heat to dissolve, then add Naki montmorillonite, stir and mix, ultrasonically disperse for 20-25 minutes, add silicone oil, mix and stir for 40-45 minutes, and emulsify to obtain an emulsion; B3. Add a 0.8% triethylenetetramine solution dropwise into the emulsion, heat to react for 1.5-2 hours, filter, wash, and dry at 50-60° C. for 10-12 hours to obtain the silicone oil sustained-release microcapsules.

[0007] By adopting the above technical solution, the entire preparation process forms microcapsules containing silicone oil through emulsification, reaction, curing and other steps. These microcapsules are evenly distributed in the polymer glue and can be activated when the waterproof membrane is damaged to release silicone oil, which can reduce the surface energy of the crack tip, reduce the driving force of crack expansion, and promote crack repair, thereby improving the self-repair ability and overall waterproof performance of the waterproof membrane. This method solves the problem of performance degradation that traditional waterproof membranes are prone to after long-term use to a certain extent, and enhances the service life and reliability of the product.

[0008] Optionally, in step B1, the weight ratio of gum arabic, water, montmorillonite and silicone oil is (2-4):100:(1-2):(3-5); in step B3, the volume ratio of triethylenetetramine solution and emulsion is 1:4.

[0009] Optionally, the weight ratio of SIS to SBS is 1:(1-1.5).

[0010] By adopting the above technical scheme, the present application controls the weight ratio of SIS and SBS, which can ensure that the polymer adhesive in the application of waterproof membrane has the advantages of rapid bonding and initial adhesion, as well as long-term stability, weather resistance, chemical resistance and temperature resistance, thereby significantly improving the comprehensive performance and service life of the waterproof membrane.

[0011] Optionally, the antioxidant is antioxidant A.

[0012] Optionally, the tackifying resin is terpene SYLVARES 1105.

[0013] Optionally, the light stabilizer is an ultraviolet light absorber UV-326.

[0014] Optionally, the cyclopentane oil is cyclopentane oil KN-4010.

[0015] In a second aspect, the present application provides a method for preparing the above-mentioned polymer glue, comprising the following steps: S1, putting styrene resin, EPDM rubber, SIS, SBS, naphthenic oil, silicone oil sustained-release microcapsules and light calcium carbonate into an internal mixer, mixing and kneading to prepare a premix; S2, adding a tackifying resin, a light stabilizer and an antioxidant to the premix in sequence, and extruding after melt blending to obtain the polymer glue.

[0016] By adopting the above technical solution, the preparation method adopted in the present application is simple, easy to operate, improves production efficiency, and is suitable for industrial production.

[0017] In a third aspect, the present application provides the application of the above-mentioned polymer adhesive in waterproof membrane.

[0018] By adopting the above technical solution, the polymer glue prepared in the present application has excellent aging resistance and excellent bonding performance. When applied to waterproof coiled materials, it can improve the bonding strength between the waterproof coiled materials and the substrate, and can also enhance the service life and reliability of the waterproof coiled materials.

[0019] In summary, the present invention includes at least one of the following beneficial technical effects: 1. This application uses specific raw materials and balances various components to produce a polymer adhesive with excellent bonding properties, weather resistance, long-term stability and durability. This application uses styrene resin and EPDM rubber as base polymers. Styrene resin can provide good bonding and cohesion, enhance the hardness and temperature resistance of the adhesive, EPDM rubber can provide excellent flexibility, weather resistance and chemical resistance, enhance the elasticity of the adhesive, and help resist stress cracking; the addition of two thermoplastic elastomers, SIS and SBS, can improve the elasticity, toughness and adhesion of the polymer adhesive. SIS can improve the initial adhesion, which helps the waterproof membrane to quickly adhere to the base surface at the beginning of construction and provide an immediate bonding effect. SBS can provide better high temperature stability and low temperature toughness, ensuring the stable bonding and weather resistance of the waterproof membrane during long-term use; Silicone When the polymer glue is under stress, the oil slow-release microcapsules rupture and release silicone oil to help repair microcracks and improve the self-healing ability of the polymer glue; cyclohexane oil acts as a plasticizer to improve the fluidity and flexibility of the polymer glue, while helping to reduce costs; light calcium carbonate acts as a filler to increase the volume of the polymer glue, reduce costs, and also improve its mechanical strength and wear resistance; tackifying resins increase the viscosity of the polymer glue and improve adhesion to the substrate; light stabilizers protect the polymer glue from the effects of ultraviolet radiation, delay its aging process, and maintain long-term performance stability; antioxidants inhibit oxidation reactions in the polymer glue, prevent performance degradation due to oxidation, and extend its service life.

[0020] 2. The preparation method adopted in this application is simple, easy to operate, improves production efficiency, and is suitable for industrial production.

[0021] 3. The polymer glue prepared in the present application has excellent aging resistance and bonding performance. When applied to waterproof roll materials, it can improve the bonding strength between the waterproof roll materials and the substrate, and can also enhance the service life and reliability of the waterproof roll materials. DETAILED DESCRIPTION

[0022] The present application is further described in detail below with reference to the embodiments.

[0023] The polymer glue provided in the present application comprises, by weight, 20-30 parts of styrene resin, 25-35 parts of EPDM rubber, 5-12 parts of cyclohexane oil, 8-12 parts of SIS, 9-16 parts of SBS, 7-15 parts of silicone oil sustained-release microcapsules, 10-20 parts of light calcium carbonate, 20-30 parts of tackifying resin, 3-5 parts of light stabilizer, and 1-3 parts of antioxidant.

[0024] The present application provides a method for preparing the above-mentioned polymer glue, comprising the following steps: S1, putting styrene resin, EPDM rubber, SIS, SBS, naphthenic oil, silicone oil sustained-release microcapsules and light calcium carbonate into an internal mixer, mixing and kneading to prepare a premix; S2, adding a tackifying resin, a light stabilizer and an antioxidant to the premix in sequence, and extruding after melt blending to obtain the polymer glue.

[0025] The polymer adhesive prepared by the present application adopts specific raw materials and balances various components, and has excellent bonding performance, weather resistance, long-term stability and durability, and the preparation method is simple, easy to operate, and improves production efficiency, and is suitable for industrial production. The polymer adhesive prepared by the present application is applied to waterproof coiled materials, which can improve the bonding strength between the waterproof coiled materials and the substrate, and can also enhance the service life and reliability of the waterproof coiled materials. Specific embodiments

[0026] Preparation Example 1-3 Preparation Example 1 This preparation example provides a silicone oil sustained-release microcapsule, and the preparation method thereof comprises the following steps: B1. Gum arabic was added to water and mixed, heated to dissolve, then Naki montmorillonite was added and stirred, ultrasonically dispersed for 20 minutes, silicone oil was added, mixed and stirred for 45 minutes, and emulsified to obtain an emulsion; B3. Add a 0.8% triethylenetetramine solution dropwise into the emulsion, heat and react for 1.5 hours, filter, wash, and dry at 50° C. for 12 hours to obtain the silicone oil sustained-release microcapsules.

[0027] Wherein, in step B1, the weight ratio of gum arabic, water, nano-montmorillonite and silicone oil is 2:100:1:3; in step B3, the volume ratio of triethylenetetramine solution and emulsion is 1:4.

[0028] Preparation Example 2 This preparation example provides a silicone oil sustained-release microcapsule, and the preparation method thereof comprises the following steps: B1. Gum arabic was added to water and mixed, heated to dissolve, then Naki montmorillonite was added and stirred, ultrasonically dispersed for 22 minutes, silicone oil was added, mixed and stirred for 43 minutes, and emulsified to obtain an emulsion; B3. Add a 0.8% triethylenetetramine solution dropwise into the emulsion, heat and react for 1.8 hours, filter, wash, and dry at 55° C. for 11 hours to obtain the silicone oil sustained-release microcapsules.

[0029] Wherein, in step B1, the weight ratio of gum arabic, water, nano-montmorillonite and silicone oil is 3:100:2:4; in step B3, the volume ratio of triethylenetetramine solution and emulsion is 1:4.

[0030] Preparation Example 3 This preparation example provides a silicone oil sustained-release microcapsule, and the preparation method thereof comprises the following steps: B1. Gum arabic was added to water and mixed, heated to dissolve, then Naki montmorillonite was added and stirred, ultrasonically dispersed for 25 minutes, then silicone oil was added, mixed and stirred for 40 minutes, and emulsified to obtain an emulsion; B3. Add a 0.8% triethylenetetramine solution dropwise into the emulsion, heat and react for 2 hours, filter, wash, and dry at 60° C. for 10 hours to obtain the silicone oil sustained-release microcapsules.

[0031] Wherein, in step B1, the weight ratio of gum arabic, water, nano-montmorillonite and silicone oil is 4:100:2:5; in step B3, the volume ratio of triethylenetetramine solution and emulsion is 1:4.

[0032] Examples 1-3 Example 1 The present embodiment provides a polymer glue, and its raw material composition includes, by weight: 20 parts of styrene resin, 25 parts of EPDM rubber, 5 parts of naphthenic oil, 8 parts of SIS, 9 parts of SBS, 7 parts of silicone oil sustained-release microcapsules, 10 parts of light calcium carbonate, 20 parts of tackifying resin, 3 parts of light stabilizer, and 1 part of antioxidant; The cyclohexane oil is cyclohexane oil KN-4010, the silicone oil sustained-release microcapsules are prepared by Preparation Example 1, the tackifying resin is terpene SYLVARES 1105, the light stabilizer is ultraviolet light absorber UV-326, and the antioxidant is antioxidant A.

[0033] The preparation method comprises the following steps: S1. Put styrene resin, EPDM rubber, SIS, SBS, naphthenic oil, silicone oil sustained-release microcapsules and light calcium carbonate into an internal mixer, and mix them at 140° C. for 20 min to prepare a premix; S2. Add tackifying resin, light stabilizer and antioxidant to the premix in sequence, mix at 90° C. for 30 minutes to obtain polymer glue.

[0034] Example 2 This embodiment provides a polymer glue, and its raw material composition includes, by weight: 25 parts of styrene resin, 30 parts of EPDM rubber, 9 parts of naphthenic oil, 10 parts of SIS, 10 parts of SBS, 12 parts of silicone oil sustained-release microcapsules, 15 parts of light calcium carbonate, 25 parts of tackifying resin, 4 parts of light stabilizer, and 2 parts of antioxidant; The cyclohexane oil is cyclohexane oil KN-4010, the silicone oil sustained-release microcapsules are prepared by Preparation Example 1, the tackifying resin is terpene SYLVARES 1105, the light stabilizer is ultraviolet light absorber UV-326, and the antioxidant is antioxidant A.

[0035] The preparation method comprises the following steps: S1. Put styrene resin, EPDM rubber, SIS, SBS, naphthenic oil, silicone oil sustained-release microcapsules and light calcium carbonate into an internal mixer, and mix them at 140° C. for 20 min to prepare a premix; S2. Add tackifying resin, light stabilizer and antioxidant to the premix in sequence, mix at 90° C. for 30 minutes to obtain polymer glue.

[0036] Example 3 This embodiment provides a polymer glue, and its raw material composition includes, by weight: 30 parts of styrene resin, 35 parts of EPDM rubber, 12 parts of naphthenic oil, 12 parts of SIS, 16 parts of SBS, 15 parts of silicone oil sustained-release microcapsules, 20 parts of light calcium carbonate, 30 parts of tackifying resin, 5 parts of light stabilizer, and 3 parts of antioxidant; The cyclohexane oil is cyclohexane oil KN-4010, the silicone oil sustained-release microcapsules are prepared by Preparation Example 1, the tackifying resin is terpene SYLVARES 1105, the light stabilizer is ultraviolet light absorber UV-326, and the antioxidant is antioxidant A.

[0037] The preparation method comprises the following steps: S1. Put styrene resin, EPDM rubber, SIS, SBS, naphthenic oil, silicone oil sustained-release microcapsules and light calcium carbonate into an internal mixer, and mix them at 140° C. for 20 min to prepare a premix; S2. Add tackifying resin, light stabilizer and antioxidant to the premix in sequence, mix at 90° C. for 30 minutes to obtain polymer glue.

[0038] Comparative Examples 1-3 Comparative Example 1 The difference between Comparative Example 1 and Example 2 is that silicone oil sustained-release microcapsules are not added in Comparative Example 1.

[0039] Comparative Example 2 The difference between Comparative Example 2 and Example 2 is that in Comparative Example 2, an equal amount of SIS is used instead of SBS.

[0040] Comparative Example 3 The difference between Comparative Example 3 and Example 2 is that in Comparative Example 3, an equal amount of SBS is used instead of SIS.

[0041] Example 4 This example is based on Example 2, except that the silicone oil sustained-release microcapsules in this example are prepared by Preparation Example 2.

[0042] Example 5 This example is based on Example 2, except that the silicone oil sustained-release microcapsules in this example are prepared by Preparation Example 3.

[0043] Example 6 This example is based on Example 4, and the total weight of SIS and SBS is maintained at 20 parts by weight. The difference is that the weight ratio of SIS to SBS in this example is 1:1.2.

[0044] Example 7 This example is based on Example 4, and the total weight of SIS and SBS is maintained at 20 parts by weight. The difference is that the weight ratio of SIS to SBS in this example is 1:1.5.

[0045] Experimental testing The polymer adhesives obtained in Examples 1-7 and Comparative Examples 1-3 were extruded into sheets, and release paper was laid on the sheets to roll them up, thereby obtaining waterproof rolls.

[0046] Test items and test methods The waterproof rolls made of the polymer adhesives obtained in Examples 1-7 and Comparative Examples 1-3 were subjected to the following performance tests: Waterproof performance: The waterproofness of the lap joints of the polymer glue produced is tested according to GB 55030-2022 "General Specification for Waterproofing of Buildings and Municipal Engineering".

[0047] Aging resistance: According to GB / T 16422.3-2014, the prepared polymer adhesive was subjected to an artificial climate aging test to observe whether there were cracks.

[0048] Adhesion performance: Test the joint peeling performance of polymer adhesive according to GB / T 328.21-2007 "Test methods for building waterproof membranes Part 21".

[0049] The polymer adhesives prepared in Examples 1-7 and Comparative Examples 1-3 were tested for lap joint water impermeability, aging resistance, joint shear performance, and joint peeling performance. The test results are shown in Table 1.

[0050] Table 1 Combining the test results of Examples 1-3, Comparative Examples 1-3 and Table 1, it can be seen that the polymer glue prepared by the raw material composition and ratio of the present application has excellent bonding performance, weather resistance, long-term stability and durability, and the waterproof roll obtained has better comprehensive performance. The addition of silicone oil slow-release microcapsules can be activated when the waterproof roll is damaged to release silicone oil, thereby improving the self-repair ability and overall waterproof performance of the waterproof roll. The addition of two thermoplastic elastomers, SIS and SBS, can improve the elasticity, toughness and adhesion of the polymer glue.

[0051] Combining the test results of Examples 4-5, Example 2 and Table 1, it can be seen that the use of silicone oil sustained-release microcapsules prepared according to Preparation Example 2 can better ensure the bonding performance and aging resistance of the polymer glue, so that the comprehensive performance of the waterproof membrane prepared is better.

[0052] Combining the test results of Examples 6-7, Example 4 and Table 1, it can be seen that when the weight ratio of SIS to SBS is 1:(1-1.5), especially when the weight ratio of SIS to SBS is 1:1.2, the bonding performance and aging resistance of the obtained polymer adhesive are better, and the comprehensive performance of the waterproof membrane obtained thereby is better.

Claims

1. A polymer glue, It is characterized in that The raw materials include, by weight: 20-30 parts of styrene resin, 25-35 parts of EPDM rubber, 5-12 parts of cyclohexane oil, 8-12 parts of SIS, 9-16 parts of SBS, 7-15 parts of silicone oil sustained-release microcapsules, 10-20 parts of light calcium carbonate, 20-30 parts of tackifying resin, 3-5 parts of light stabilizer and 1-3 parts of antioxidant.

2. The polymer glue according to claim 1, It is characterized in that The preparation method of the silicone oil sustained-release microcapsules comprises the following steps: B1. Add gum arabic to water, mix, heat to dissolve, then add Naki montmorillonite, stir and mix, ultrasonically disperse for 20-25 minutes, add silicone oil, mix and stir for 40-45 minutes, and emulsify to obtain an emulsion; B3. Add a 0.8% triethylenetetramine solution dropwise into the emulsion, heat to react for 1.5-2 hours, filter, wash, and dry at 50-60° C. for 10-12 hours to obtain the silicone oil sustained-release microcapsules.

3. The polymer glue according to claim 2, It is characterized in that In the step B1, the weight ratio of gum arabic, water, montmorillonite and silicone oil is (2-4):100:(1-2):(3-5), and in the step B3, the volume ratio of triethylenetetramine solution and emulsion is 1:

4.

4. The polymer glue according to claim 1, It is characterized in that The weight ratio of SIS to SBS is 1:(1-1.5).

5. The polymer glue according to claim 1, It is characterized in that The antioxidant is antioxidant A.

6. The polymer glue according to claim 1, It is characterized in that The tackifying resin is terpene SYLVARES1105.

7. The polymer glue according to claim 1, It is characterized in that The light stabilizer is ultraviolet light absorber UV-326.

8. The polymer glue according to claim 1, It is characterized in that The naphthenic oil is naphthenic oil KN-4010.

9. A method for preparing the polymer glue according to any one of claims 1 to 8, It is characterized in that The following steps are involved: S1, putting styrene resin, EPDM rubber, SIS, SBS, naphthenic oil, silicone oil sustained-release microcapsules and light calcium carbonate into an internal mixer, mixing and kneading to prepare a premix; S2, adding a tackifying resin, a light stabilizer and an antioxidant to the premix in sequence, melt-blending and then extruding to obtain the polymer glue.

10. Use of the polymer adhesive according to any one of claims 1 to 8 in waterproofing membranes.

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