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A technology of cable sheath and silane coupling agent, which is applied to rubber insulators, organic insulators, etc., and can solve problems such as low temperature resistance, mechanical tensile properties that need to be improved, and poor flame retardancy
Pending Publication Date: 2021-05-07
国网河南省电力公司西峡县供电公司
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[0005] The above two sheaths can protect the cable to a certain extent, but the flame retardancy is poor,
Method used
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Embodiment 1-5
[0027] In embodiment 1-5, a kind of preparation method of cable sheath comprises the following steps:
[0028] S1: Put fluorosilicone rubber, styrene-butadiene rubber, nitrile-butadiene rubber, and xylene in an internal mixer, 80°C, and banbury at a speed of 300r / min for 30min;
[0029] S2: Add decabromodiphenylethane, silane coupling agent, bentonite, dimethyl tetrachloroterephthalate to step S1, keep the rotation speed and temperature constant, and continue banburying for 20 minutes;
[0030] S3: The mixture obtained in step S2 is placed in an extruder, extruded, and dried.
[0031] In Examples 1-5, the silane coupling agent is KH550, and the particle size of bentonite is 200-300 mesh.
Embodiment 6
[0033] This embodiment provides a cable sheath and a preparation method thereof, which is the same as Embodiment 3, but the difference from Embodiment 3 is that in this embodiment, 1.3 parts by weight of artificial spider silk and 0.7 parts by weight of ultraviolet absorbing agent UV-O. In the preparation method of this embodiment, artificial spider silk and ultraviolet absorber UV-O are added together with decabromodiphenylethane, silane coupling agent, bentonite, and dimethyl tetrachloroterephthalate.
Embodiment 7
[0035]This embodiment provides a cable sheath and a preparation method thereof, which is the same as Embodiment 3, but the difference from Embodiment 3 is that in this embodiment, 1.4 parts by weight of artificial spider silk and 0.8 parts by weight of ultraviolet absorbing agent UV-O. In the preparation method of this embodiment, artificial spider silk and ultraviolet absorber UV-O are added together with decabromodiphenylethane, silane coupling agent, bentonite, and dimethyl tetrachloroterephthalate.
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Abstract
The invention discloses a cable sheath and a preparation method thereof, and belongs to the technical field of power cable protection, the cable sheath is prepared from the following raw materials by weight: 15-20 parts of fluorosilicone rubber, 8-12 parts of styrene butadiene rubber, 5-10 parts of nitrile rubber, 1.2-1.8 parts of decabromodiphenyl ethane, 1.2-2 parts of a silane coupling agent, 2.5-3.5 parts of bentonite, 1.7-2.5 parts of dimethyl tetrachloroterephthalate, and 100-150 parts of xylene. The oxygen index of the cable sheath reaches 37 or above, and the cable sheath is good in flame retardant property; at normal temperature, the elongation at break reaches 682% or above, the tensile strength reaches 36.81 Mpa or above, and the mechanical property is excellent; under the condition of 200 DEG C, the elongation at break reaches 468% or above, and the tensile strength reaches 23.68 Mpa or above.
Description
technical field [0001] The invention relates to the technical field of power cable protection, in particular to a cable sheath and a preparation method thereof. Background technique [0002] With the rapid development of urbanization, life is becoming more and more intelligent, so more electricity needs to be consumed. A cable is made of one or more mutually insulated conductors covered with an insulating layer and a protective layer. It is used to transmit power or information from one place to another. It has a wide range of applications in power transmission, information transmission, etc. . The mechanical properties, high temperature resistance and flame retardancy of the existing cable sheaths need to be improved, especially the toughness is poor, and there are great safety hazards in long-term use. [0003] The patent document with the publication number CN108948496A discloses an underground cable sheath material, which belongs to the technical field of cable sheath ...
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