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

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

Example Embodiment

[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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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

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Claims

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Application Information

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Owner 大连圣迈化学有限公司
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