Trunk sealing strip and preparation method thereof
A technology for sealing strips and luggage, which is applied in transportation, packaging, and vehicle parts. It can solve the problems of body sheet metal pollution, complex processing technology, and short service life, and achieve water infiltration prevention, simple processing technology, and good sealing. Effect
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Embodiment 1
[0026] The process of preparation method of the present invention is as follows:
[0027] (1) According to the formula requirements, the raw and auxiliary materials are measured and matched for the first-stage rubber material and the second-stage rubber material.
[0028] (2) One-stage raw rubber mastication: 50kg of water-stop material raw rubber is masticated on a pressurized internal mixer. The mastication time is 2 minutes, and the mastication temperature is 60°C.
[0029] (3) One-stage rubber mixing: Add carbon black, rubber filler oil, zinc oxide, stearic acid, and ethylene glycol to the plasticized raw rubber in sequence for mixing; the mixing process of the internal mixer is pressurized Banburying for 6 minutes until the temperature reaches 130°C.
[0030] (4) One-stage glue training: transport the mixed rubber section to the open mill, and carry out open-work training on the open-roll machine for 6 minutes. After the open-work training is completed, the film is slice...
Embodiment 2
[0038] Embodiment 2: The steps of the preparation method are the same as those in Embodiment 1, the difference is that: (2) the rubber masticating time of the first stage is 2min, and the masticating temperature is 60°C. (3) The mixing process of the medium internal mixer is pressure internal mixing for 7 minutes until the temperature reaches 135°C. (4) The training time on the middle open mill is 7 minutes. (5) The second-stage rubber mastication time is 0.5 min, and the mastication temperature is 45°C. (6) The mixing process of the second-stage rubber mixer is pressurized banburying for 3 minutes, and the banburying temperature is 55°C. (7) The second-stage rubber is practiced on the open mill for 5.5 minutes. (9) The temperature of the extruder is 60°C, and the temperature of the head of the extruder is 65°C. (10) The oven temperature is 240°C, the microwave power is 2Kw, and the vulcanization time is about 9 minutes.
Embodiment 3
[0039]Embodiment 3: The steps of the preparation method are the same as those in Embodiment 1, with the difference that: (2) the rubber masticating time for the first stage is 2 minutes, and the masticating temperature is 60° C. (3) The mixing process of the medium internal mixer is pressurized internal mixing for 8 minutes until the temperature reaches 140°C. (4) The training time on the medium-open mill is 8 minutes. (5) The masticating time of the second-stage rubber is 0.5 min, and the masticating temperature is 45°C. (6) The mixing process of the second-stage rubber mixer is pressurized banburying for 3.5 minutes, and the banburying temperature is 60°C. (7) The second-stage rubber is practiced on the open mill for 6 minutes. (9) The temperature of the extruder is 70°C, and the temperature of the head of the extruder is 70°C. (10) The oven temperature is 250°C, the microwave power is 2Kw, and the vulcanization time is about 8 minutes.
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Abstract
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