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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

Inactive Publication Date: 2006-06-14
大连圣迈化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The use of inorganic flame retardants to achieve the effect of flame retardancy and smoke suppression often requires a high addition amount (more than 50%), which has a greater impact on the mechanical properties of the material. Due to technical reasons, my country lags far behind in the use of inorganic flame retardants In foreign countries, the halogen-free and low-smoke materials used in important occasions are mainly imported, which also limits the development of halogen-free and low-smoke flame-retardant materials.

Method used

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  • Thermoplastic non-halogen low fume fire resistant cable isolation material and processing tech. thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1: Formulation Design

[0031] A: EPDM rubber 100 grams;

[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 grams of carbon black, 1 gram of paraffin.

[0035] Put A, B, C, and D into a high-speed mixer and stir evenly. The temperature is 100-120°C, the speed is 100-200rpm, and the mixture is complete.

[0036] Step 2: Processing

[0037] Control the temperature of the heating section of the twin-screw extruder at 150°C, add the mixed material in step 1, complete one-time processing, and pelletize after extrusion and air-cooling or water-cooling.

[0038] Step 3: Test Results

[0039] The pellets are extruded into tablets, and tested according to national standards or IEC and other standard test methods to achieve the following rele...

Embodiment 2

[0048] Step 1: Formulation Design

[0049] A: EPDM rubber 80 grams, polyethylene 20 grams;

[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 grams of carbon black, 1 gram of paraffin.

[0053] Put A, B, C, and D into a high-speed mixer and stir evenly. The temperature is 100-120°C, the speed is 100-200rpm, and the mixture is complete.

[0054] Step 2: Processing

[0055] Control the temperature of the heating section of the twin-screw extruder at 140°C, add the mixed material in step 1, complete one-time processing, and pelletize after extrusion and air-cooling or water-cooling.

[0056] Step 3: Test Results

[0057] The pellets are extruded into tablets, and tested according to national standards or UL94 and other standard test methods to achieve the following relevant technical performance...

Embodiment 3

[0066] Step 1: Formulation Design

[0067] A: ethylene propylene rubber 100 grams;

[0068] B: 100 grams of nano magnesium hydroxide;

[0069] C: 2 grams of silane coupling agent;

[0070] D: 3 grams of white carbon black, 2 grams of paraffin.

[0071] Put A, B, C, and D into a high-speed mixer and stir evenly. The temperature is 100-120°C, the speed is 100-200rpm, and the mixture is complete.

[0072] Step 2: Processing

[0073] Control the temperature of the heating section of the twin-screw extruder at 150°C, add the mixed material in step 1, complete one-time processing, and pelletize after extrusion and air-cooling or water-cooling.

[0074] Step 3: Test Results

[0075] The pellets are extruded into tablets, and tested according to national standards or IEC and other standard test methods to achieve the following relevant technical performance indicators:

[0076] Tensile strength: 13MPa Elongation at break: 290%

[0077] Heat aging performance (136℃×168h): Tensil...

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Abstract

The invention relates to a formula design for a thermoplastic halogen-free low-smoke flame-retardant cable insulating material and the manufacturing process thereof, concretely, using polyethene copolymer and / or modified ethylene-propylene rubber as a substrate, adding in halogen-free and nontoxic flame-retardant agent (nano magnesium hydroxide or aluminum hydroxide) and inorganic crystal whisker strengthening material as primary components, and adding in proper assistant, proportioning, mixing, plasticizing and making grains to make the insulating material. Its technical characters: not containing halogen, P, Al and other heavy metals; having god mechanical property, machining property and superior flame retardancy and having excellent thermal deforming, thermal ageing and thermal shock properties. The made cables have high safety and reliability. It is applied to the cables operating at 70 deg.C-105 deg.C long time, such as ship cables, cables for nuclear power plants, power and control cables for high-rise buildings, etc.

Description

technical field [0001] The invention relates to a technical invention in the field of wire and cable industry, specifically a thermoplastic halogen-free low-smoke flame-retardant cable insulation material and its processing technology, which are applied to the insulation layer of wire and cable and have flame-retardant, smoke Poison and other functional characteristics. It can also be used in household appliances, electronics, construction and other fields. It is a new type of environmentally friendly polymer functional material. Background technique [0002] Polymer materials can be seen everywhere in our daily life, such as wires and cables, electrical switches, remote controls, TV sets, washing machine casings, etc. Plastics are easy to burn, and produce a lot of harmful gas and smoke when burning. The fire hazard caused by this has become a global concern. The United States is the first country to limit the smoke and toxic gases produced by the burning of polymer mater...

Claims

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Application Information

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IPC IPC(8): H01B7/295C08L23/00C08L23/06C08L83/00H01B3/00H01B3/28H01B3/44
Inventor 赵大明严宝财王舫丛卫军张涛高绪国
Owner 大连圣迈化学有限公司
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