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Thermoplastic low-smoke halogen-free high-flame-retardant polyolefin sheath material and preparation method thereof

A polyolefin sheath, thermoplastic technology, used in plastic/resin/wax insulators, organic insulators, conductors, etc., can solve problems such as difficulty and many combustibles, achieve easy operation, good compatibility, and ensure long-term service life Effect

Inactive Publication Date: 2017-07-07
天津市普立泰高分子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for unshielded digital communication cables, especially without metal shielding and tape or large logarithmic digital cables, because polyethylene resin is used for insulation, there are many combustibles, and there is no metal coating, the oxygen index is generally only It is also very difficult for a low-smoke, halogen-free, flame-retardant polyolefin sheath of about 40 to pass IEC332-3 bundled Class C combustion

Method used

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  • Thermoplastic low-smoke halogen-free high-flame-retardant polyolefin sheath material and preparation method thereof
  • Thermoplastic low-smoke halogen-free high-flame-retardant polyolefin sheath material and preparation method thereof
  • Thermoplastic low-smoke halogen-free high-flame-retardant polyolefin sheath material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0020] The preparation of embodiment 1:

[0021] Prepare the raw material formula according to the weight parts shown in Table 1, put it into the kneader and mix it evenly, control the mixing temperature at 140°C, and then send it into a single-screw extruder with a diameter of 120mm to extrude and pelletize, and the extrusion temperature is controlled At 110 to 150°C, the extrusion speed is controlled at 300 rpm, then sieved through a vibrating sieve, and finally cooled to below 50°C for packaging to complete the preparation of the finished product.

Embodiment 2

[0022] The preparation of embodiment 2:

[0023] Prepare the raw material formula according to the weight parts shown in Table 1, put it into the kneader and mix it evenly, control the mixing temperature at 150°C, and then send it into a single-screw extruder with a diameter of 120mm to extrude and pelletize, and the extrusion temperature is controlled At 110 to 150°C, the extrusion speed is controlled at 200 rpm, then sieved through a vibrating sieve, and finally cooled to below 50°C for packaging to complete the preparation of the finished product.

[0024] The main performance requirements of the thermoplastic low-smoke, halogen-free and highly flame-retardant polyolefin sheath material prepared in the embodiment of the present invention are shown in Table 2:

[0025] Table 2 shows the performance requirements of the thermoplastic low-smoke, halogen-free and highly flame-retardant polyolefin sheathing material prepared in the examples of the present invention

[0026] ...

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Abstract

The invention provides a thermoplastic low-smoke halogen-free high-flame-retardant polyolefin sheath material and a preparation method thereof. The material is mainly prepared from, by weight, 30-40 parts of ethylene-acrylate copolymer resin, 30-40 parts of polyolefin elastomer resin, 20-30 parts of polyethylene resin, 10-20 parts of compatilizer, 200-250 parts of hydroxide flame-retardant agent, 5-10 parts of charring agent, 1-2 parts of flame-retardant synergist, 0.5 part of antioxidant A, 0.5 part of antioxidant B and 5-10 parts of lubricating agent. The preparation method includes the steps that the raw materials are metered by weight and conveyed into a mastication machine to be evenly mixed, the mixture is conveyed into a single-screw extruder to be extruded and granulated, then the mixture is screened through a vibrating sieve, and finally the mixture is cooled and packaged to obtain the finished product. The preparation method is reasonable in design, the sheath material is high in oxygen index, has the environment-friendly characteristics of low fuming and low corrosion, is good in char forming characteristic and can be used as a digital communication cable sheath meeting the IEC332-3 bundling C class combustion test requirement, the preparation method is reasonable, and operation is easy.

Description

technical field [0001] The invention relates to a cable material and a preparation method thereof, in particular to a thermoplastic low-smoke halogen-free high flame-retardant polyolefin sheath for digital communication cables and a preparation method thereof. Background technique [0002] At present, for the purpose of safety and environmental protection, cables are required to be both environmentally friendly and flame retardant. It is easy to pass the environmental protection requirements, but due to the different cable structures and combustible content, passing the IEC332-3 bundled combustion test has a lot to do with the cable type and structure. As long as the materials and structure design of power cables and radio frequency cables are reasonable, they are easy to burn in bunches through IEC332-3. However, for unshielded digital communication cables, especially without metal shielding and tape or large logarithmic digital cables, because polyethylene resin is used f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L51/06C08L83/04C08K13/02C08K3/22C08K3/34C08K3/26H01B3/44H01B7/17H01B7/295
CPCC08L23/0869C08K2201/003C08K2201/011C08L23/0815C08L2201/02C08L2201/08C08L2201/22C08L2203/202C08L2205/025C08L2205/035C08L2205/08H01B3/441H01B7/18H01B7/295C08L51/06C08L83/04C08K13/02C08K2003/2224C08K3/346C08K2003/267
Inventor 汪全伟董文博汪全信
Owner 天津市普立泰高分子科技有限公司
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