High-strength self-repairing waterproof roll and preparation method thereof

Abstract

The invention discloses a high-strength self-repairing waterproof coiled material and a preparation method thereof, and belongs to the technical field of waterproof coiled materials. The waterproof coiled material is prepared from the following raw materials in parts by weight: 60 to 80 parts of matrix asphalt, 50 to 60 parts of palm oil-based diol, 16 to 20 parts of PET (Polyethylene Terephthalate) fibrofelt, 16 to 20 parts of SBS (Styrene Butadiene Styrene) thermoplastic elastomer, 9 to 11 parts of naphthenic oil, 6 to 10 parts of plant waste, 6 to 10 parts of antibacterial additive, 1 to 2 parts of amino functional group siloxane and 0.8 to 1.0 part of chemical root inhibitor. The proportion of the palm oil-based diol and the SBS thermoplastic elastomer in the waterproof coiled material enables the waterproof coiled material to have excellent self-repairing capability. When the surface of the waterproof coiled material has micro cracks or is damaged, the self-repairing component in the material can effectively repair the cracks and recover the waterproof performance of the waterproof coiled material. The inorganic silver salt antibacterial additive is used, it is ensured that the waterproof roll can inhibit breeding of bacteria and fungi in the using process, the bacteria are prevented from corroding the material, and the durability and sanitation of the roll are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproof coiled materials, and more particularly to a high-strength self-repairing waterproof coiled material and a preparation method thereof. Background Art

[0002] Waterproof membranes are commonly used in the construction industry, widely used in roofs, basements, tunnels, and other projects to prevent water penetration and ensure the safety of building structures. However, traditional waterproof membranes often have shortcomings, such as susceptibility to environmental influences, aging and damage, and a gradual decline in waterproofing effectiveness over long-term use. Therefore, improving the durability and self-healing capabilities of waterproof membranes has become a key research and development direction for waterproof materials.

[0003] At present, there are some self-healing waterproof membrane products on the market, which mainly improve their crack resistance by adding self-healing materials (such as polymers, elastomers, microcapsules, etc.) into the membrane. However, the self-healing effect of existing technologies is still relatively limited, especially when exposed to extreme environments for a long time, the performance of the waterproof membrane is still at risk of decline.

[0004] Furthermore, existing waterproofing membranes mostly use traditional chemical raw materials and synthetic materials, such as asphalt and polyethylene. While these materials offer some waterproofing properties, they are environmentally unfriendly and consume significant amounts of energy during production, resulting in high costs and difficulty meeting the demands of environmental protection and energy conservation. Therefore, developing a waterproofing membrane with both excellent self-healing properties and environmental advantages has become a pressing challenge within the industry.

[0005] A search of existing literature found that the Chinese patent application with publication number CN109504301A and publication date March 22, 2019 disclosed a pre-laid waterproof membrane and its preparation method, which includes, from top to bottom, an upper surface mineral granular layer, a modified asphalt layer, a polyester felt layer, a self-adhesive layer and an isolation membrane layer; the modified asphalt layer has a thickness of 2.5 mm; the raw materials required for the modified asphalt layer include: mixed asphalt, SBR rubber, polyolefin resin, dipropylene glycol-butyl ether, flame retardant, polyether-siloxane copolymer Wet270 and synergist; although this patent application can extend the service life of the waterproof membrane and improve its overall performance, its cost is relatively high and it is difficult to meet the needs of green environmental protection and energy saving. Summary of the Invention

[0006] 1. Technical problems to be solved

[0007] In response to the problems existing in the prior art, the purpose of the present invention is to provide a high-strength self-repairing waterproof membrane and a preparation method thereof, which not only has excellent self-repairing performance, but also has good waterproofness, antibacterial properties, mechanical strength and environmental protection.

[0008] 2. Technical solution

[0009] To solve the above problems, the present invention adopts the following technical solutions.

[0010] A high-strength self-repairing waterproof membrane is composed of the following raw materials in parts by weight: 60-80 parts of base asphalt, 50-60 parts of palm oil-based glycol, 16-20 parts of PET fiber felt, 16-20 parts of SBS thermoplastic elastomer, 9-11 parts of naphthenic oil, 6-10 parts of plant waste, 6-10 parts of antibacterial additives, 1-2 parts of amino-functional siloxane, and 0.8-1.0 part of a chemical root inhibitor.

[0011] Furthermore, the high-strength self-repairing waterproof membrane is composed of the following raw materials in parts by weight: 70 parts of matrix asphalt, 55 parts of palm oil-based glycol, 18 parts of PET fiber felt, 18 parts of SBS thermoplastic elastomer, 10 parts of cyclohexane oil, 8 parts of plant waste, 8 parts of antibacterial additives, 1.5 parts of amino-functional silicone, and 0.9 parts of chemical root inhibitor.

[0012] The method for preparing the high-strength self-repairing waterproof membrane comprises the following steps:

[0013] 1) First, add the base asphalt and palm oil-based glycol in a weight ratio of 60-80 parts and 50-60 parts to a stirring device, and control the stirring speed and temperature to ensure that the two components are completely mixed;

[0014] 2) Add 16-20 parts by weight of PET fiber felt to the above mixed solution, ensuring that it is evenly distributed, continue heating to 160-180°C while stirring, then add 16-20 parts of SBS thermoplastic elastomer, continue heating and stirring until it is completely dissolved and evenly dispersed;

[0015] 3) Mix 9-11 parts of naphthenic oil and 6-10 parts of plant waste in proportion, add them to the asphalt mixture, keep stirring and heat to 170-190°C to ensure that the two are fully mixed and the composition is uniform;

[0016] 4) Add 6-10 parts of antimicrobial additive to the mixture, then add 1-2 parts of amino-functional siloxane, continue stirring and heat to 180-200° C. to ensure that all ingredients are fully reacted;

[0017] 5) After the mixture is prepared, add 0.8 to 1.0 parts of a chemical root inhibitor and stir evenly; after all the ingredients are mixed and reacted, cool the mixture to room temperature; and form the cooled mixture into a waterproof membrane through a mold or a roller pressing device.

[0018] Furthermore, the stirring speed in step 1) is 130-150 r / min, and the temperature is 140-150°C.

[0019] Preferably, the antibacterial additive is an inorganic silver salt antibacterial agent, and the plant waste is a mixture of walnut kernels, tangerine peels, and banana peels in a weight ratio of 1:1.3-1.5:1-2.

[0020] Preferably, in step 2), after the SBS thermoplastic elastomer is added, the stirring temperature is maintained at 160-170° C., and this step lasts for 20-30 minutes to ensure that the SBS thermoplastic elastomer can be fully dissolved and evenly dispersed.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] 1) The combination of palm oil-based glycol and SBS thermoplastic elastomer in the waterproof membrane gives it excellent self-healing capabilities. When microcracks or damage appear on the surface of the waterproof membrane, the self-healing component in the material can effectively repair the cracks and restore its waterproof performance.

[0024] 2) The addition of matrix asphalt provides the basic waterproofing effect of the waterproof membrane, while the mixture of SBS thermoplastic elastomer and naphthenic oil enhances its barrier ability to moisture, ensuring that the waterproof membrane can still effectively waterproof even when exposed to extreme environmental conditions for a long time.

[0025] 3) The present invention uses an inorganic silver salt antibacterial additive to ensure that the waterproof membrane can inhibit the growth of bacteria and fungi during use, prevent bacteria from eroding the material, and improve the durability and hygiene of the membrane.

[0026] 4) The preparation method of the present invention provides the membrane with excellent processing properties. By controlling the stirring speed, temperature, and mixing time, uniform mixing and reaction of all ingredients can be ensured, resulting in stable physical and chemical properties. The waterproof membrane exhibits good fluidity and operability during the preparation process, facilitating large-scale production and construction.

[0027] 5) The addition of PET fiber felt effectively enhances the mechanical strength of the waterproof membrane, improves its wear resistance and tensile strength, and ensures that the membrane can maintain good structural stability when subjected to external forces.

[0028] 6) The coiled material of the present invention has a tensile strength of 21.6-22.3 MPa and a notched impact strength of 88.6-90.3 kJ / m 2 , water absorption rate 0.9~1.2% and tensile strength after aging 19.2~21.1Mpa, its data is better, and it has higher heat resistance, water resistance and mechanical properties. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Example 1:

[0031] A high-strength self-repairing waterproof membrane is composed of the following raw materials in parts by weight: 60 parts of base asphalt, 50 parts of palm oil-based glycol, 16 parts of PET fiber felt, 16 parts of SBS thermoplastic elastomer, 9 parts of cyclohexane oil, 6 parts of plant waste, 6 parts of antibacterial additive, 1 part of amino-functional siloxane, and 0.8 part of a chemical root inhibitor; the antibacterial additive is an inorganic silver salt antibacterial agent, and the plant waste is a mixture of walnut kernels, tangerine peels, and banana peels in a weight ratio of 1:1.3:1.

[0032] A method for preparing a high-strength self-repairing waterproof membrane comprises the following steps:

[0033] 1) Add base asphalt and palm oil-based glycol in a weight ratio of 60 parts to 50 parts into a stirring device, and control the stirring speed and temperature to ensure that the two components are completely blended; the stirring speed is 130 r / min and the temperature is 140°C.

[0034] 2) 16 parts by weight of PET fiber felt was added to the mixed solution to ensure uniform distribution, and the mixture was heated to 160° C. and stirred continuously. Then, 16 parts of SBS thermoplastic elastomer was added, and the mixture was heated and stirred continuously until it was completely dissolved and uniformly dispersed. After the SBS thermoplastic elastomer was added, the stirring temperature was maintained at 160° C., and this step was continued for 20 minutes to ensure that the SBS thermoplastic elastomer was fully dissolved and uniformly dispersed.

[0035] 3) Mix 9 parts of naphthenic oil and 6 parts of plant waste in proportion, add them to the asphalt mixture, keep stirring and heat to 170°C to ensure that the two are fully mixed and the composition is uniform;

[0036] 4) Add 6 parts of antimicrobial additive to the mixture, then add 1 part of amino-functional siloxane, continue stirring and heat to 180°C to ensure that all ingredients are fully reacted;

[0037] 5) After the mixture is completed, add 0.8 parts of chemical root inhibitor and stir evenly; after all ingredients are mixed and reacted, cool the mixture to room temperature; and form the cooled mixture into a waterproof membrane through a mold or a rolling device.

[0038] Example 2

[0039] A high-strength self-repairing waterproof membrane is composed of the following raw materials in parts by weight: 70 parts of base asphalt, 55 parts of palm oil-based glycol, 18 parts of PET fiber felt, 18 parts of SBS thermoplastic elastomer, 10 parts of cyclohexane oil, 8 parts of plant waste, 8 parts of antibacterial additive, 1.5 parts of amino-functional siloxane, and 0.9 part of a chemical root inhibitor; the antibacterial additive is an inorganic silver salt antibacterial agent, and the plant waste is a mixture of walnut kernels, tangerine peels, and banana peels in a weight ratio of 1:1.4:1.5.

[0040] A method for preparing a high-strength self-repairing waterproof membrane comprises the following steps:

[0041] 1) Add base asphalt and palm oil-based glycol in a weight ratio of 70 parts and 55 parts to a stirring device, and control the stirring speed and temperature to ensure that the two components are completely mixed; the stirring speed is 140 r / min and the temperature is 145°C.

[0042] 2) 18 parts by weight of PET fiber felt was added to the mixed solution to ensure uniform distribution, and the mixture was heated to 170° C. and stirred continuously. Then, 18 parts of SBS thermoplastic elastomer was added, and the mixture was heated and stirred continuously until it was completely dissolved and uniformly dispersed. After the SBS thermoplastic elastomer was added, the stirring temperature was maintained at 165° C., and this step was continued for 25 minutes to ensure that the SBS thermoplastic elastomer was fully dissolved and uniformly dispersed.

[0043] 3) Mix 10 parts of naphthenic oil and 8 parts of plant waste in proportion, add them to the asphalt mixture, keep stirring and heat to 180°C to ensure that the two are fully mixed and the composition is uniform;

[0044] 4) Add 8 parts of antimicrobial additive to the mixture, then add 1.5 parts of amino-functional siloxane, continue stirring and heat to 190° C. to ensure that all ingredients are fully reacted;

[0045] 5) After the mixture is completed, add 0.9 parts of chemical root inhibitor and stir evenly; after all ingredients are mixed and reacted, cool the mixture to room temperature; and form the cooled mixture into a waterproof membrane through a mold or a rolling device.

[0046] Example 3

[0047] A high-strength self-repairing waterproof membrane is composed of the following raw materials in parts by weight: 80 parts of base asphalt, 60 parts of palm oil-based glycol, 20 parts of PET fiber felt, 20 parts of SBS thermoplastic elastomer, 11 parts of cyclohexane oil, 10 parts of plant waste, 10 parts of antibacterial additive, 2 parts of amino-functional siloxane, and 1.0 part of a chemical root inhibitor; the antibacterial additive is an inorganic silver salt antibacterial agent, and the plant waste is a mixture of walnut kernels, tangerine peels, and banana peels in a weight ratio of 1:1.5:2.

[0048] A method for preparing a high-strength self-repairing waterproof membrane comprises the following steps:

[0049] 1) Add base asphalt and palm oil-based glycol in a weight ratio of 80 parts and 60 parts to a stirring device, and control the stirring speed and temperature to ensure that the two components are completely mixed; the stirring speed is 150 r / min and the temperature is 150°C.

[0050] 2) 20 parts by weight of PET fiber felt was added to the mixed solution to ensure uniform distribution, and the mixture was heated to 180° C. and stirred continuously. Then, 20 parts of SBS thermoplastic elastomer was added, and the mixture was heated and stirred continuously until it was completely dissolved and uniformly dispersed. After the SBS thermoplastic elastomer was added, the stirring temperature was maintained at 170° C., and this step was continued for 30 minutes to ensure that the SBS thermoplastic elastomer was fully dissolved and uniformly dispersed.

[0051] 3) Mix 11 parts of naphthenic oil and 10 parts of plant waste in proportion, add them to the asphalt mixture, keep stirring and heat to 190°C to ensure that the two are fully mixed and the composition is uniform;

[0052] 4) Add 10 parts of antimicrobial additive to the mixture, then add 2 parts of amino-functional siloxane, continue stirring and heat to 200°C to ensure that all ingredients are fully reacted;

[0053] 5) After the mixture is completed, add 1.0 part of a chemical root inhibitor and stir evenly; after all the ingredients are mixed and reacted, cool the mixture to room temperature; and form the cooled mixture into a waterproof membrane through a mold or a rolling device.

[0054] Experimental example

[0055] Taking patent publication number CN109504301A, patent name "A pre-laid waterproofing membrane and its preparation method" as reference document 1; taking patent publication number CN117445492A, patent name "Anti-aging modified asphalt waterproofing membrane and its preparation method" as reference document 2, the following comparative experiments were conducted:

[0056] Mechanical properties testing

[0057]

[0058] As can be seen from the table above, the coils obtained in Examples 1-3 have a tensile strength of 21.6-22.3 MPa and a notched impact strength of 88.6-90.3 kJ / m 2 , water absorption rate 0.9~1.2% and tensile strength after aging 19.2~21.1Mpa, its data is better, and it has higher heat resistance, water resistance and mechanical properties.

[0059] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A high-strength self-repairing waterproof membrane, characterized in that The invention is composed of the following raw materials in parts by weight: 60-80 parts of base asphalt, 50-60 parts of palm oil-based glycol, 16-20 parts of PET fiber felt, 16-20 parts of SBS thermoplastic elastomer, 9-11 parts of naphthenic oil, 6-10 parts of plant waste, 6-10 parts of antibacterial additive, 1-2 parts of amino functional group silicone, and 0.8-1.0 part of chemical root inhibitor.

2. The high-strength self-repairing waterproof membrane according to claim 1, characterized in that: The invention is composed of the following raw materials in parts by weight: 70 parts of base asphalt, 55 parts of palm oil-based glycol, 18 parts of PET fiber felt, 18 parts of SBS thermoplastic elastomer, 10 parts of naphthenic oil, 8 parts of plant waste, 8 parts of antibacterial additive, 1.5 parts of amino functional group silicone, and 0.9 parts of chemical root inhibitor.

3. The method for preparing a high-strength self-repairing waterproof membrane according to claim 1, characterized in that The steps include: 1) First, add the base asphalt and palm oil-based glycol in a weight ratio of 60-80 parts and 50-60 parts to a stirring device, and control the stirring speed and temperature to ensure that the two components are completely mixed; 2) Add 16-20 parts by weight of PET fiber felt to the above mixed solution, ensuring that it is evenly distributed, continue heating to 160-180°C while stirring, then add 16-20 parts of SBS thermoplastic elastomer, continue heating and stirring until it is completely dissolved and evenly dispersed; 3) Mix 9-11 parts of naphthenic oil and 6-10 parts of plant waste in proportion, add them to the asphalt mixture, keep stirring and heat to 170-190°C to ensure that the two are fully mixed and the composition is uniform; 4) Add 6-10 parts of antimicrobial additive to the mixture, then add 1-2 parts of amino-functional siloxane, continue stirring and heat to 180-200° C. to ensure that all ingredients are fully reacted; 5) After the mixture is prepared, add 0.8 to 1.0 parts of a chemical root inhibitor and stir evenly; after all the ingredients are mixed and reacted, cool the mixture to room temperature; and form the cooled mixture into a waterproof membrane through a mold or a roller pressing device.

4. The method for preparing a high-strength self-repairing waterproof membrane according to claim 3, characterized in that: The stirring speed in the step 1) is 130-150 r / min, and the temperature is 140-150°C.

5. The high-strength self-repairing waterproof membrane according to claim 1, characterized in that: The antibacterial additive is an inorganic silver salt antibacterial agent, and the plant waste is a mixture of walnut kernels, tangerine peels and banana peels in a weight ratio of 1:1.3-1.5:1-2.

6. The method for preparing a high-strength self-repairing waterproof membrane according to claim 3, characterized in that: In the step 2), after the SBS thermoplastic elastomer is added, the stirring temperature is maintained at 160-170° C., and the duration of this step is 20-30 minutes to ensure that the SBS thermoplastic elastomer can be fully dissolved and evenly dispersed.

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