125 DEG C irradiation cross-linking low-smoke halogen-free flame-retardant polyolefin cable material
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A polyolefin cable material and irradiation technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of difficulty in pelletizing production, increase in screw torque, difficulty in insulation extrusion, etc. The effect of excellent heat aging resistance
Inactive Publication Date: 2015-11-25
STATE GRID SHANDONG ELECTRIC POWER +1
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(2) After adding a large amount of inorganic flame retardant, the processing fluidity of the material is very poor, and the screw torque rises sharply, which makes the granulation production very difficult, and the insulation extrusion is also very difficult. How to improve the processing performance of these materials is the first Two technical keys
(3) If the material melts and drips during burning, it is easier to spread the fire, aggravate the fire, and expose a new surface of the material to accelerate combustion
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Embodiment 1
[0016] A 125°C irradiation cross-linked low-smoke halogen-free flame-retardant polyolefin cable material, comprising the following formula by weight: 60 parts of EVA, 40 parts of HDPE, 45 parts of aluminum hydroxide, 45 parts of magnesium hydroxide, and 5 parts of calcium-zinc composite stabilizer , 10 parts of softening agent, 5 parts of flame retardant, 10 parts of compatibilizer, 11 parts of antioxidant OSP, 0.5 parts of lubricant, 4 parts of crosslinking agent, and the compatibilizer is maleic anhydride grafted PE.
Embodiment 2
[0018] A 125°C irradiation cross-linked low-smoke halogen-free flame-retardant polyolefin cable material, including the following weight ratio formula: 65 parts of EVA, 45 parts of HDPE, 50 parts of aluminum hydroxide, 50 parts of magnesium hydroxide, and 8 parts of calcium-zinc composite stabilizer , 12 parts of softening agent, 8 parts of flame retardant, 15 parts of compatibilizer, 11.2 parts of antioxidant OSP, 0.8 parts of lubricant, 5 parts of crosslinking agent, and the compatibilizer is maleic anhydride grafted PE.
Embodiment 3
[0020] A 125°C irradiation cross-linked low-smoke halogen-free flame-retardant polyolefin cable material, comprising the following formula by weight: 90 parts of EVA, 60 parts of HDPE, 60 parts of aluminum hydroxide, 60 parts of magnesium hydroxide, and 10 parts of calcium-zinc composite stabilizer , 15 parts of softening agent, 10 parts of flame retardant, 18 parts of compatibilizer, 11.5 parts of antioxidant OSP, 1 part of lubricant, 6 parts of crosslinking agent, and the compatibilizer is maleic anhydride grafted PE.
[0021] After testing, all the performances of the product meet the standards. The test results are compared with VDE standard, IEC standard and United Carbide product DFDA21472NT, as shown in Table 1.
[0022] Table 1:
[0023]
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Abstract
The invention discloses a 125 DEG C irradiation cross-linking low-smoke halogen-free flame-retardant polyolefin cable material, and belongs to the field of cable material formulas. The 125 DEG C irradiation cross-linking low-smoke halogen-free flame-retardant polyolefin cable material comprises 60-90 parts of EVA, 40-60 parts of HDPE, 45-60 parts of aluminum hydroxide, 45-60 parts of magnesium hydroxide, 5-10 parts of calcium-zinc compound stabilizer, 10-15 parts of softening and strengthening agents, 5-10 parts of flame retardant agents, 10-18 parts of compatibilizer, 1-1.5 parts of antioxygen OSP-1, 0.5-1 part of lubricant and 4-6 parts of cross-linking agents. The environmentally friendly cable material has the advantages of being low in smoke, free of halogen and toxin, flame retardant and resistant to high temperature, and meanwhile the mechanical property, the processing property, the flame retardant property and the high temperature resistance of the cable material all reach a higher level.
Description
technical field [0001] The invention belongs to a cable material formula, in particular to a 125°C irradiation cross-linked low-smoke halogen-free flame-retardant polyolefin cable material. Background technique [0002] 125°C radiation cross-linked low-smoke, halogen-free, flame-retardant polyolefin cable material is an environmentally friendly flame-retardant cable material developed to meet the characteristics of low-smoke, halogen-free, non-toxic, flame-retardant, and high-temperature resistance. It is a radiation cross-linkable cable material that uses polyolefin as the base material, aluminum hydroxide, magnesium hydroxide and other inorganic flame retardant materials as the flame retardant, and is blended, plasticized and granulated. The development of 125°C radiation cross-linked low-smoke halogen-free flame-retardant polyolefin cable materials must solve the following technical key points: (1) Since flame retardants containing halogens cannot be used, only aluminum h...
Claims
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