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Nano kaoline fire-resistant synergistic halogen-free non-phosphor cable sheath material

A nano-kaolin, cable sheathing material technology, used in non-phosphorus polyolefin flame retardant cable sheathing material, low smoke, halogen-free field, can solve the problem of unsatisfactory flame retardant performance and mechanical properties, complex manufacturing process, low purity, etc. problems, to achieve the effect of improved tensile strength, convenient material acquisition, high purity and whiteness

Inactive Publication Date: 2006-10-25
NINGBO SHIP PLASTIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the unsatisfactory flame retardancy and mechanical properties of the composite material manufactured by using nano-montmorillonite as a flame-retardant synergistic filler in the prior art, complex manufacturing process and high cost, and montmorillonite sheet layer With the defects and shortcomings of high negative charge, whiteness and low purity, it is difficult to promote and apply on a large scale in the field of industrialization, and to inve

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  • Nano kaoline fire-resistant synergistic halogen-free non-phosphor cable sheath material

Examples

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Example Embodiment

[0040] Example 1: 50 parts of ethylene-vinyl acetate copolymer, 30 parts of ethylene-octene copolymer, 20 parts of maleic anhydride grafted polyethylene, 80 parts of silane-treated aluminum hydroxide, and 30 parts of polymer-coated magnesium hydroxide parts, 5 parts of zinc borate, 25 parts of nano-kaolin, 4 parts of macromolecular silicone, 1 part of zinc stearate, 2 parts of antioxidant, added to a high-speed mixer and mixed for 10 minutes. Then, the obtained mixture is melted and pelletized in a twin-screw extruder at 120-150° C., and dried to obtain the flame-retardant cable sheath material of the present invention. Test results: The oxygen index is 36.4, the tensile strength is 12.6Mpa, the elongation at break is 216%, and the vertical combustion reaches the FV-0 level.

Example Embodiment

[0041] Example 2: 60 parts of ethylene-vinyl acetate copolymer, 20 parts of ethylene-butene copolymer, 20 parts of maleic anhydride grafted ethylene-vinyl acetate copolymer, 90 parts of silane-treated aluminum hydroxide, polymer package Coated with 30 parts of aluminum hydroxide, 5 parts of zinc borate, 15 parts of nano-kaolin, 4 parts of macromolecular silicone, 1 part of macromolecular wax, 1 part of zinc stearate, 2 parts of antioxidant, added to a high-speed mixer and mixed for 10 minutes . Then, the obtained mixture is melted and pelletized in a twin-screw extruder at 120-150° C., and dried to obtain the flame-retardant cable sheath material of the present invention. Test results: The oxygen index is 35.8, the tensile strength is 12.2Mpa, the elongation at break is 202%, and the vertical combustion reaches the FV-0 level.

Example Embodiment

[0042] Example 3: 50 parts of ethylene-vinyl acetate copolymer, 20 parts of low density polyethylene, 20 parts of maleic anhydride grafted polyethylene, 10 parts of maleic anhydride grafted ethylene-vinyl acetate copolymer, silane treated hydrogen Add 70 parts of aluminum oxide, 60 parts of polymer-coated aluminum hydroxide, 5 parts of zinc borate, 10 parts of nano-kaolin, 3 parts of polymer silicone, 1 part of zinc stearate, and 2 parts of antioxidant. 10 minutes. Then, the obtained mixture is melted and pelletized in a twin-screw extruder at 120-150° C., and dried to obtain the flame-retardant cable sheath material of the present invention. Test results: The oxygen index is 35.4, the tensile strength is 12.6Mpa, the elongation at break is 174%, and the vertical combustion reaches the FV-0 level.

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Abstract

The invention discloses a compound material manufacture technology that uses modified nanometer kaolin to take place of nanometer montorillonite clay as antiflaming synergic action bulking agent. It contains matrix resin, fire retardant, antiflaming synergic action bulking agent, lubricant, and antioxidant; the matrix resin is the mixture of ethylene vinyl acetate copolymer, thermoplastic elastomer and grafting compound. The fire retardant contains three type fire retardants; and the antiflaming synergic action bulking agent is kaolin. The weight portions of the constituents are: 100 portions matrix resin, 100-140 portions fire retardant, 10-30 portions, 1-5 portions lubricant, 1-3 portions antioxidant. The invention has the advantages of low cost, easy technology, and excellent flame retardant property.

Description

technical field [0001] The invention relates to a manufacturing technology of a flame-retardant composite material with ethylene-vinyl acetate copolymer as the main matrix resin, especially a low-smoke, halogen-free, non-phosphorus polyolefin flame-retardant cable with nano-kaolin as a flame-retardant synergist Sheath material. Background technique [0002] Flame-retardant cable sheathing materials are usually made of matrix resin with fillers such as flame retardants, lubricants and antioxidants. In addition to certain flame-retardant properties, they also require sufficient mechanical strength. The main indicators include Tensile strength, elongation at break, oxygen index, horizontal and vertical burning ratings, and more. The early flame-retardant cable sheath materials were almost all halogen-containing, and these products were eliminated because they easily released toxic gases and produced a lot of smoke when burned. Later, colleagues invented a halogen-free product...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08K3/22C08K3/34C08K5/10C08K5/524C08K5/54C08L23/06C08L51/00H01B7/295
Inventor 张文阳应建波
Owner NINGBO SHIP PLASTIC CO LTD
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