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Special waterproof adhesive tape for bridge expansion joint and preparation method of adhesive tape
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A waterproof tape, expansion joint technology, applied in the direction of adhesives, film/sheet adhesives, etc., can solve the problems of aging resistance, ozone resistance, oil resistance, poor surface gloss, etc., and achieve improved life and advanced technology. Simplified, effect of increased elongation at break
Inactive Publication Date: 2014-04-16
闫长贵
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Abstract
Description
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Application Information
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Problems solved by technology
Currently used waterproof tapes have disadvantages such as aging resistance, ozone resistance, oil stain resistance, and poor surface gloss.
Method used
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Examples
Experimental program
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Embodiment 1
[0067] The first step is to choose materials
[0068] Weigh 100 kg of EPDM rubber; 12 kg of low-pressure polyethylene; 17 kg of plasticizer; 14 kg of stabilizer; 35 kg of filler, 3.0 kg of accelerator, 1.2 kg of lubricant, 4.2 kg of coupling agent, vulcanizing agent 1 kg;
[0069] The second step, plastic kneading and internal mixing
[0070] Add the weighed raw materials into a plastic internal mixer and knead, the kneading temperature is controlled at 120°C, and the kneading time is controlled at 70 minutes to obtain a semi-finished product;
[0071] The third step is to enter the plasticizing machine
[0072] Put the kneaded semi-finished products into the plastic refining machine respectively, the plasticizing time in the plastic refining machine is controlled at 20 minutes, and the temperature in the plastic refining machine is controlled at 170°C;
[0074] The qualified film is sent to the cutting machine to cut into strips, and th...
Embodiment 2
[0083] The first step is to choose materials
[0084] Weigh 100 kg of EPDM rubber; 18 kg of low-pressure polyethylene; 22 kg of plasticizer; 18 kg of stabilizer; 46 kg of filler, 3.5 kg of accelerator, 2.2 kg of lubricant, 5.3 kg of coupling agent, vulcanizing agent 1.8 kg;
[0085] The second step, plastic kneading and internal mixing
[0086] Add the weighed raw materials into a plastic internal mixer and knead, the kneading temperature is controlled at 140°C, and the kneading time is controlled at 50 minutes to obtain a semi-finished product;
[0087] The third step is to enter the plasticizing machine
[0088] Put the kneaded semi-finished products into the plastic refining machine respectively, the plasticizing time in the plastic refining machine is controlled at 30 minutes, and the temperature in the plastic refining machine is controlled at 140°C;
[0090] The qualified film is sent to the cutting machine to cut into strips, and ...
Embodiment 3
[0099] The first step is to choose materials
[0100] Take by weighing 100 kilograms of EPDM rubber; 14 kilograms of low-pressure polyethylene; 19 kilograms of plasticizer; 1.6 kg of joint agent and 3.2 kg of chlorinated polyethylene, 1.4 kg of vulcanizing agent; 0.9 kg of channel black; 1.1 kg of auxiliary heat insulation additive; 1.4 kg of ultraviolet absorber;
[0101] The second step, plastic kneading and internal mixing
[0102] Put the weighed raw materials into a plastic internal mixer and knead, the kneading temperature is controlled at 130°C, and the kneading time is controlled at 60 minutes to obtain a semi-finished product;
[0103] The third step is to enter the plasticizing machine
[0104] Put the kneaded semi-finished products into the plastic refining machine respectively, the plasticizing time in the plastic refining machine is controlled at 24 minutes, and the temperature in the plastic refining machine is controlled at 160°C;
[0105] Step four, cut into...
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Abstract
The invention belongs to the technical field of special waterproof adhesive tapes for bridge expansion joints and preparation methods thereof, and discloses a special waterproof adhesive tape for a bridge expansion joint and a preparation method of the adhesive tape. The special waterproof adhesive tape is mainly technologically characterized by comprising an adhesive tape body and end sockets, wherein the cross section of the adhesive tape body is U-shaped; the end sockets are arranged at two ends of the adhesive tape body; an outfall is formed in the bottom of the adhesive tape body; a drain-pipe communicated with the outfall is arranged below the adhesive tape body. The waterproof adhesive tape is characterized in that the adhesive tape body, the end sockets and the drain-pipe are prepared from the following materials in parts by weight: 100 parts of ethylene propylene dienemonomer, 12-18 parts of low-pressure polyethylene, 17-22 parts of plasticizer, 14-18 parts of stabilizer, 35-46 parts of filler, 3.0-3.5 parts of accelerator, 1.2-2.2 parts of lubricant, 4.2-5.3 parts of coupling agent, and 1-1.8kg of vulcanizer. The adhesive tape body is adhered to the end sockets, the adhesive tape body and the drain-pipe by adopting a secondary vulcanization method. Thus, the break strength is increased by 1.7; the elongation at break is increased by 22%; the brittleness temperature is reduced to -3 DEG C; the aging coefficient is increased by 0.13.
Description
technical field [0001] The invention belongs to the technical field of special waterproof adhesive tape for bridge expansion joints and a preparation method, and in particular relates to an anti-aging special waterproof adhesive tape for bridge expansion joints and a preparation method. Background technique [0002] In newly-built passenger dedicated lines, bridges account for about 80% of the total line length. For example, the total length of bridges on the Beijing-Tianjin intercity railway accounts for 88% of the total length of the line, and the total length of bridges on the Beijing-Shanghai high-speed railway accounts for 85% of the total length of the line. Years of experience in the operation of railway bridges in my country shows that more than 90% of the bridges have various factors that affect the durability of the structure. It is related to water damage, such as alkali aggregate reaction, concrete carbonation, electrochemical corrosion of steel bars, acid rain da...
Claims
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Application Information
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