Flexible, wear-resistant, halogen-free and flame-retardant sheath material used for elevator cables, and preparation method of sheath material
A soft and wear-resistant elevator cable technology, applied in the field of elevator cables, to achieve the effect of satisfying wear resistance and disturbance resistance, improving aging resistance temperature and wear resistance, and excellent aging resistance
Inactive Publication Date: 2017-02-08
ORIGIANL DOW ADVANCED COMPOUNDS SHANGHAI
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Problems solved by technology
[0003] At present, most of the elevator cables in the industry (CN 103724877 A, CN 104140615 A) still use PVC as the sheath material. Although they are excellent in flame retardancy, they continuously produce halogen-containing toxic gases during the combustion process.
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[0022] Further elaborate technical characteristics of the present invention below in conjunction with embodiment:
[0023] The preparation method of the soft wear-resistant halogen-free flame-retardant sheath material for elevator cables of the present invention is as follows:
[0024] In the following preferred embodiments, the raw material components were weighed according to the proportions in Table 1, placed in a high-speed mixer and mixed for 4-8 minutes, and then the mixture was plasticized and kneaded in the twin-screw, and then entered into the single-screw extruder. Granules; the processing temperature of the twin-screw is: conveying section 135-140°C, melting section 135-140°C, mixing section 140-145°C, exhaust section 140-145°C, homogenizing section 160-165°C, machine head 160-165°C; single-screw temperature: first zone 160-165°C, second zone 160-165°C, third zone 155-160°C, head 155-160°C, pelletized and air-cooled before packaging. Table 1 is the embodiment formu...
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Abstract
The invention provides a flexible, wear-resistant, halogen-free and flame-retardant sheath material used for elevator cables. The sheath material comprises, by weight, 35-50 parts of an ethylene-vinyl acetate copolymer (EVA), 20-40 parts of an ethylene-octylene block copolymer (OBC), 15-25 parts of high density polyethylene (HDPE), 5-15 parts of a compatilizer, 30-60 parts of a flame retardant, 0.8-2 parts of an antioxidant and 0.5-1.5 parts of a lubricant. The invention also discloses a preparation method of the flexible, wear-resistant, halogen-free and flame-retardant sheath material used for elevator cables. The flexible, wear-resistant, halogen-free and flame-retardant sheath material used for elevator cables has the characteristics of excellent flexibility, good wear resistance, low smoke, no halogen and flame retardation, and is especially suitable for elevator cables of high-rise elevators, subways, shopping malls and important public places.
Description
technical field [0001] The invention relates to a soft, wear-resistant, halogen-free flame-retardant sheath material for elevator cables and a preparation method thereof, in particular to elevator cables suitable for high-rise elevators, subways, shopping malls and important public places, which have excellent flexibility, wear resistance and low smoke Halogen-free flame retardant sheath compound. Background technique [0002] As the floors get higher and higher, there are different degrees of high requirements for the running speed of the elevator and the lifting height of the elevator. Since the elevator room is a small and nearly closed space, and there are many cables such as control, lighting, and fans in the elevator room, it increases the difficulty of the performance and wiring of the accompanying cables. The requirements of high-speed elevator accompanying cables include: high running speed, long running stroke, high tensile strength, good flexibility and wear resi...
Claims
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IPC IPC(8): C08L23/08C08L53/00C08L23/06C08L51/06C08K13/02C08K5/3492C08K5/134C08K5/372C08K5/098H01B3/44B29B9/06B29C47/92B29C48/92
CPCC08L23/0853B29B9/06B29C48/92B29C2948/92704C08L53/00C08L2201/02C08L2201/22C08L2203/202C08L2205/035C08L2205/08C08L2207/062H01B3/441C08L23/06C08L51/06C08K13/02C08K5/34928C08K5/1345C08K5/372C08K5/098
Inventor 蔡荷菲宋刚翁文彪
Owner ORIGIANL DOW ADVANCED COMPOUNDS SHANGHAI