Oil resistant type silane natural cross-linking low smoke halogen-free flame retardant polyolefin cable material and preparation method thereof
A polyolefin cable material, natural cross-linking technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of not meeting the oil resistance requirements of marine cable sheath materials, limiting the scope of use, etc., saving costs, shortening construction period, The effect of improving the surface quality
Active Publication Date: 2013-03-20
SHANGHAI KAIBO SPECIAL CABLE FACTORY
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Problems solved by technology
In addition, although the silane cross-linked low-smoke halogen-free flame-retardant polyolefin cable material does not need the complicated link of irradiation, it needs boiling water or steam bath cross-linking process.
Moreover, the silane crosslinked low-smoke, halogen-free, flame-retardant polyolefin cable material still cannot meet the oil resistance requirements related to marine cable sheathing materials, which limits its application range
Method used
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[0045]
[0046] The preparation method of oil-resistant silane natural cross-linking low-smoke halogen-free flame-retardant polyolefin cable material, the silane graft A material and the catalyst masterbatch are uniformly mixed according to the weight ratio, and extruded through the single-screw extruder I, embodiment 1-4 Place it under natural conditions for 2 to 7 days, boil water for 1 to 2 hours in Example 5-6 in warm water at 70°C to 80°C; the oil-resistant silane naturally cross-linked low-smoke halogen-free flame-retardant polyolefin cable material can be prepared . The higher the ambient temperature, the greater the humidity, the smaller the material thickness and coil size, the shorter the time required for natural crosslinking.
[0047] The extrusion temperature of the single-screw extruder I is: 120-130°C in the feeding section, 130-140°C in the mixing section, 135-145°C in the homogenizing section, and 145°C in the head part.
[0048]
[0049] Wherein, the p...
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Abstract
The invention discloses an oil resistant type silane natural cross-linking low smoke halogen-free flame retardant polyolefin cable material and a preparation method thereof; the oil resistant type silane natural cross-linking low smoke halogen-free flame retardant polyolefin cable material of the invention comprises silane grafting material A and catalyst master batch in a weight ratio of 95:3-5, wherein the silane grafting material A comprises the following components according to the parts by weight: 100 parts of polyolefin resin, 120-150 parts of first fire retardant, 1-2 parts of first lubricant, 0.2-0.4 part of first antioxidant, 3-5 parts of silane, 0.2-0.8 part of initiator and 0.1-1.0 part of anti-pre-crosslinking agent; the catalyst master batch comprises the following components according to the parts by weight: 100 parts of polyolefin resin, 120-135 parts of second fire retardant, 3-5 parts of second lubricant, 5-10 parts of second antioxidant and 4-8 parts of high effective catalyst. The invention can be adopted for the production of polyolefin cable material.
Description
technical field [0001] The invention relates to an oil-resistant silane natural crosslinking low-smoke halogen-free flame-retardant polyolefin cable material and a preparation method thereof. Background technique [0002] Cross-linked oil-resistant low-smoke, halogen-free, flame-retardant polyolefin materials are mainly peroxide cross-linked materials and irradiation cross-linked materials in the domestic market. Imported silane cross-linked low-smoke, halogen-free, flame-retardant and oil-resistant polyolefin materials , its price is expensive, and there are not many cable manufacturers used, generally from Italian Padanaplast company and Korean DYM company. [0003] Peroxide crosslinking is to melt and extrude the polyolefin insulating material added with peroxide crosslinking agent at a temperature lower than the decomposition temperature of peroxide, and then enter the high-temperature and high-pressure special pipeline to complete crosslinking. The organic peroxide fir...
Claims
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IPC IPC(8): C08L23/00C08K13/02C08K3/22C08K5/09C08K5/098C08K5/5415B29C47/92H01B7/295B29C48/92
CPCB29C48/919B29C48/04B29C48/08B29C48/397B29C48/9185B29C48/92B29C2948/92561B29C2948/92704B29C2948/92895
Inventor 吴爱华项健汪晓明
Owner SHANGHAI KAIBO SPECIAL CABLE FACTORY