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Very-low density inflame-retarding halogen-free cable material and preparation method
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A cable material and density technology, applied in the direction of insulating cables, cables, circuits, etc., can solve the problems of flame-retardant sheath materials or insulating materials with reduced mechanical properties and increased cable material density.
Active Publication Date: 2013-08-28
上海至正新材料有限公司
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Problems solved by technology
Highly filled inorganic flame retardant, although it brings good flame retardant effect, it leads to a substantial increase in the density of the cable material and a decrease in the mechanical properties of the flame retardant sheath material or insulating material
Method used
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preparation example Construction
[0059] The preparation method of the cable can adopt conventional techniques in the art.
[0060] Preparation
[0061] The third aspect of the present invention provides a method for preparing the extremely low-density flame-retardant halogen-free cable material of the present invention, the preparation method comprising the following steps:
[0062] Mix flame retardant A, flame retardant B, lubricant, and antioxidant according to the stated ratio until the temperature reaches 90°C±5°C, discharge and place, and extrude and granulate with other components according to the ratio to obtain the described Very low density flame retardant halogen-free cable compound.
[0063] In a specific embodiment of the present invention, in the preparation method, a twin-screw granulator is used for extrusion granulation, and the four temperature sections in the extrusion granulation process are: feeding section 115-125°C, The conveying section is 125-135°C, the melting section is 135-145°C, ...
Embodiment 1
[0072] Each component name and each component parts by weight are as follows:
[0073]
[0074]
[0075] The preparation method of the above-mentioned invention comprises the following processing steps:
[0076] Mix ammonium polyphosphate, pentaerythritol, melamine, Irganox 1010, and zinc stearate in proportion to a temperature of 90°C±5°C, leave the material out, and extrude and granulate with other components in proportion. The four temperature sections in the extrusion granulation process are: feeding section 115-125°C, conveying section 125-135°C, melting section 135-145°C, die head 140-150°C.
[0077] The product in Example 1 is subjected to a performance detection test, and each performance value is as shown in the performance example.
Embodiment 2
[0079] Each component name and each component parts by weight are as follows:
[0080]
[0081] The preparation method of above-mentioned cable material is identical with embodiment 1
[0082] The product in Example 2 is subjected to a performance detection test, and each performance value is as shown in the performance example.
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Abstract
The invention provides a very-low density inflame-retarding halogen-free cable material. Components of the cable material include, by weight parts, 100 parts of basic resin, 15 to 20 parts of inflame retardant A, 21 to 52 parts of inflame retardant B, 0.5 to 3 parts of oxidation inhibitor and 0.2 to 3 parts of lubricant. The basic resin includes the following components: ethylene-octene copolymer(POE) and ethylene- vinylacetate copolymer (EVA) according to the weight ratio of (20 to 35):(65 to 80). The inflame retardant A is magnesium hydroxide, the inflame retardant B is the mixture of ammonium polyphosphate (APP), pentaerythritol and melamine (M), the weight ratio of the ammonium polyphosphate (APP), the pentaerythritol (PT) and the melamine (M) is (10 to 25):(10 to 25):(1 to 5):(10 to20). The invention further provides a preparation method of the low-smoke halogen-free inflame-retardant cable material which is very low in density, fine in inflame retardance and excellent in mechanical performance.
Description
technical field [0001] The invention relates to a halogen-free cable material and a preparation method thereof, in particular to an extremely low-density flame-retardant halogen-free cable material and a preparation method thereof. Background technique [0002] The low-smoke halogen-free flame-retardant cable is basically composed of a metal material part and a non-metal material part. When the metal material part is fixed, the weight of the cable per unit length is determined by the non-metal part. The density of the insulating material and sheath material of the low-smoke halogen-free flame-retardant cable directly determines the weight of the cable. Low-smoke, halogen-free and flame-retardant cables with low unit length and weight will bring great convenience during laying, transportation and installation. [0003] For flame retardant sheathing or insulating materials for cables, polymers are generally selected as the matrix resin. The materials are designed to achieve ...
Claims
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Application Information
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