Two-step process silane crosslinking low-smoke halogen-free flame-retarding polyolefin cable material and manufacturing method of same

The technology of polyolefin cable material and silane method is applied in the field of wire and cable, which can solve the problems of uncontinuous preparation process of wire and cable, prone to pre-crosslinking reaction, decreased resin fluidity, etc., and achieves the problems of improving processability and smooth surface of wire. , easy to control, smooth extrusion effect
CN106589564AInactive Publication Date: 2017-04-26上海新上化高分子材料有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
上海新上化高分子材料有限公司
Publication Date
2017-04-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a two-step process silane crosslinking low-smoke halogen-free flame-retarding polyolefin cable material and a manufacturing method of same. The cable material is composed of a silane grafted polyethylene material A and a low-smoke halogen-free flame-retarding polyolefin master batch containing a crosslinking catalyst material B, wherein the mass ratio of the silane grafted polyethylene material A to the low-smoke halogen-free flame-retarding polyolefin master batch containing the crosslinking catalyst material B is 12-25:88-75. The manufacturing method is simple, has low energy consumption and is easy to control. The cable material has good stability and high resin flowability and can be extruded smoothly during pay-off. The preparation process of an electric wire cable is free of pre-crosslinking, so that continuous pay-off is allowed and the cable has high surface smooth degree. The manufacturing method improves processability and surface smooth degree during the pay-off processing of the electric wire cable.
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Description

technical field

[0001] The invention belongs to the field of wires and cables, and relates to a two-step silane halogen-free flame-retardant cross-linked polyolefin cable material and a preparation method. Background technique

[0002] Polyethylene resin has good mechanical properties, insulation, low temperature resistance and processability, and is widely used in the field of wire and cable. However, due to its low temperature, poor resistance to environmental stress cracking and low oxygen index (LOI=18%), it is easy to burn, which greatly limits its application range.

[0003] The cross-linking modification technology of polyethylene wire and cable improves its service temperature and environmental stress cracking resistance. There are three main methods of polyethylene cross-linking, namely peroxide chemical cross-linking, silane cross-linking and radiation cross-linking. Law. Metal Hydroxide Aluminum Hydroxide (Al(OH) 3 ), magnesium hydroxide (Mg(OH) 2 ) has good l...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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