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Ultraviolet cross-linked low-smoke, halogen-free and flame-retardant polyolefin material and preparation method thereof

A technology of photocrosslinking and ultraviolet light, applied in the direction of plastic/resin/wax insulators, organic insulators, electrical components, etc., can solve the problems of low extrusion speed, insufficient crosslinking degree, volatilization and decomposition of photosensitizers and other materials, and achieve The effect of increasing the degree of cross-linking and improving the thermal elongation performance

Active Publication Date: 2020-05-01
河北尚华新材料股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the low extrusion speed of UV-crosslinked low-smoke halogen-free flame-retardant polyolefin materials in current cable materials, insufficient crosslinking degree after UV irradiation, environmental protection problems in the production process, and the volatilization and decomposition of materials such as photosensitizers etc., the present invention provides an ultraviolet light cross-linked low-smoke halogen-free flame-retardant polyolefin material and a preparation method thereof

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  • Ultraviolet cross-linked low-smoke, halogen-free and flame-retardant polyolefin material and preparation method thereof
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[0028] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] The concrete formula of embodiment 1-5 provided by the invention and comparative example 1-4 is as shown in table 1:

[0030] The preparation method of embodiment 1-5 provided by the invention is identical with comparative example 1-4, concrete preparation method:

[0031] Heat and stir the photo-initiated cross-linking agent in the mixer according to the metering ratio, the stirring temperature is 55°C, batching once every 2 hours, and send the photo-initiated cross-linking agent to the auxiliary feeding of the twin-screw extruder after metering by the metering pump Mouth injection, mixed with other raw materials o...

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Abstract

The invention relates to the technical field of photoelectric cables, and specifically discloses an ultraviolet cross-linked low-smoke, halogen-free and flame-retardant polyolefin material and a preparation method thereof. The ultraviolet cross-linked low-smoke halogen-free flame-retardant polyolefin material comprises the following raw materials: a matrix resin material, a photo-initiation cross-linking agent, a flame retardant, a processing auxiliary agent and an antioxidant, wherein a photo-crosslinking auxiliary agent in the photo-initiation cross-linking agent comprises active amine withpolymerization activity and methylene bisacrylamide. The preparation method comprises the following steps: mixing the raw materials according to a specific sequence, carrying out extrusion granulating, and carrying out ultraviolet irradiation crosslinking so as to be able to obtain the ultraviolet cross-linked low-smoke, halogen-free and flame-retardant polyolefin material. Through optimization design of a formula and a process for the ultraviolet cross-linked low-smoke, halogen-free and flame-retardant polyolefin material, ultraviolet irradiation rapid crosslinking and rapid extrusion production are realized; and the ultraviolet cross-linked low-smoke, halogen-free and flame-retardant polyolefin material has the characteristics of environmental protection, high flame retardance, aging resistance and the like.

Description

technical field [0001] The invention relates to the field of polymer material preparation, in particular to a low-smoke, halogen-free, flame-retardant polyolefin material for photoelectric cables and a preparation method thereof. Background technique [0002] Low-smoke, halogen-free, flame-retardant polyolefin materials are being widely promoted and applied in the field of cable preparation due to their environmental protection, low-smoke, and non-toxic characteristics. The change of molecular structure, transforming to body shape and network molecular structure, thus greatly improving the use temperature limit, physical and mechanical properties, environmental resistance of polyolefin materials, etc. Linked technologies and processes are being actively researched. [0003] Ultraviolet light cross-linking technology was first applied to products and materials such as emulsion transparent materials, film materials, fibers, etc., due to the relatively small volume of its equi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/00C08J3/28C08J3/24C08F2/50C08L23/08C08L23/06C08L51/06C08L83/04C08K13/02C08K3/22C08K3/32C08K3/38C08K5/3492H01B3/44
CPCC08F2/50C08J3/246C08J3/28C08J2323/08C08J2423/06C08J2423/08C08J2451/06C08J2483/04C08K3/22C08K3/32C08K3/38C08K5/0025C08K5/34928C08K13/02H01B3/441
Inventor 孟强杜敬亮尹会凯杜敬辉李兴旺杜振录
Owner 河北尚华新材料股份有限公司
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