Thermoplastic non-halogen low fume fire resistant cable isolation material and processing tech. thereof
A cable insulation, low-smoke flame-retardant technology, which is applied to the insulation layer of wires and cables, thermoplastic halogen-free low-smoke flame-retardant cable insulation materials and processing technology fields, can solve the limitation of the development of halogen-free low-smoke flame retardant materials and the influence of material mechanical properties. Larger and other problems, to achieve the effects of superior processing performance, improved compatibility, and improved mechanical properties
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[0029] Example 1
[0030] Step 1: Recipe Design
[0031] A: 100 grams of EPDM rubber;
[0032] B: 90 grams of aluminum hydroxide with a particle size of 3 μm, 30 grams of magnesium salt whiskers, the diameter of which is 1 μm, and the aspect ratio of the whisker material is 80;
[0033] C: 2 grams of silane 172 coupling agent, 3 grams of zinc stearate;
[0034] D: 2 g of carbon black and 1 g of paraffin.
[0035] Put A, B, C, D into a high-speed stirring mixer and stir evenly, the temperature is 100-120°C, the rotation speed is 100-200rpm, and the mixing is complete.
[0036] Step 2: Processing
[0037] The temperature of the heating section of the twin-screw extruder is controlled at 150°C, the mixed materials in step 1 are added, and the one-time processing is completed.
[0038] Step 3: Test Results
[0039] The pellets are extruded and pressed into tablets, tested according to the national standard or IEC and other standard test methods and reached the following rele...
Example Embodiment
[0047] Example 2
[0048] Step 1: Recipe Design
[0049] A: 80 grams of EPDM rubber, 20 grams of polyethylene;
[0050] B: 80 grams of nano-magnesium hydroxide, 40 grams of magnesium salt whiskers, the diameter of which is 1 μm, and the aspect ratio of the whisker material is 70;
[0051] C: 2 grams of silane 171 coupling agent;
[0052] D: 2 g of carbon black and 1 g of paraffin.
[0053] Put A, B, C, D into a high-speed stirring mixer and stir evenly, the temperature is 100-120°C, the rotation speed is 100-200rpm, and the mixing is complete.
[0054] Step 2: Processing
[0055] The temperature of the heating section of the twin-screw extruder is controlled at 140°C, the mixed materials in step 1 are added, and the one-time processing is completed.
[0056] Step 3: Test Results
[0057] The pellets are extruded and pressed into tablets, tested according to the national standard or UL94 and other standard test methods and reached the following relevant technical performa...
Example Embodiment
[0065] Example 3
[0066] Step 1: Recipe Design
[0067] A: 100 grams of ethylene-propylene rubber;
[0068] B: 100 grams of nano-magnesium hydroxide;
[0069] C: 2 grams of silane coupling agent;
[0070] D: 3 grams of white carbon black and 2 grams of paraffin.
[0071] Put A, B, C, D into a high-speed stirring mixer and stir evenly, the temperature is 100-120°C, the rotation speed is 100-200rpm, and the mixing is complete.
[0072] Step 2: Processing
[0073] The temperature of the heating section of the twin-screw extruder is controlled at 150°C, the mixed materials in step 1 are added, and the one-time processing is completed.
[0074] Step 3: Test Results
[0075] The pellets are extruded and pressed into tablets, tested according to the national standard or IEC and other standard test methods and reached the following relevant technical performance indicators:
[0076] Tensile strength: 13MPa Elongation at break: 290%
[0077] Thermal aging performance (136℃×168...
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