Acrylate rubber as well as preparation method and application thereof
A technology of acrylate and rubber, which is applied in the field of acrylate rubber and its preparation, which can solve the problems of difficult industrialization, complex synthesis process, low gel content, etc., to avoid the use of solvents, stable reaction temperature, and oligomer content low effect
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[0015] The first aspect of the present invention provides a kind of preparation method of acrylate rubber, it is characterized in that, this preparation method comprises the following steps:
[0016] S1. Premixing: premixing the polymerization monomer and the initiator to obtain a premix;
[0017] S2. Polymerization reaction: transfer the premixed material in step S1 to a polymerization reaction device for polymerization reaction;
[0018] Wherein, the polymerization reaction device is a tubular reactor and / or a twin-screw extruder.
[0019] In the present invention, after premixing the polymerization monomer and the initiator, bulk polymerization is carried out in a tubular reactor and / or a twin-screw extruder to obtain acrylate rubber.
[0020] In the present invention, the polymerized monomers containing acrylate monomers are bulk polymerized in tubular reactors and / or twin-screw extruders, which can significantly reduce the amount of polymerization caused by the difficult...
Embodiment 1
[0065] Put 100 parts of ethyl acrylate, 2.5 parts of vinyl chloroacetate and 0.06 parts of azobisisobutyronitrile at one time into a stirring mixing tank with temperature control below 40°C and mix thoroughly. After mixing, enter the tubular reaction through a metering pump. device (the length-to-diameter ratio is 4:1), the tubular reactor is controlled at 60°C, and the reaction time is 1h. The conversion rate of the polymerized monomer in the tubular reactor is 50%, and then enters the twin-screw extruder (the long-diameter The ratio is 32:1), the temperature of the reaction section of the twin-screw extruder is controlled at 80°C, the temperature of the extrusion section of the twin-screw extruder is controlled at 70°C, the shear speed of the extruder is 65r / min, and the extrusion time is 15min. Acrylate rubber A1 was prepared. Wherein, the polymerization temperature of the tubular reactor is 20° C. lower than that of the twin-screw extruder.
[0066] After testing, the num...
Embodiment 2
[0068] Put 100 parts of ethyl acrylate, 2.5 parts of vinyl chloroacetate and 0.1 part of azobisisobutyronitrile at one time into a stirring mixing tank with temperature control below 40°C and mix them thoroughly. After mixing, enter the tube reaction through a metering pump. device (length-to-diameter ratio is 4:1), the tubular reaction is controlled at 60°C, the reaction time is 0.8h, and the conversion rate of polymerized monomer in the tubular reactor is 55%, and then enters the twin-screw extruder (long-diameter The ratio is 32:1), the temperature of the reaction section of the twin-screw extruder is controlled at 80°C, the temperature of the extrusion section of the twin-screw extruder is controlled at 70°C, the shear speed of the extruder is 65r / min, and the extrusion time is 12min. Acrylate rubber A2 was prepared. Wherein, the polymerization temperature of the tubular reactor is 20° C. lower than that of the twin-screw extruder.
[0069] After testing, the number avera...
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