CROSS- LINKED CLEAN FLAME RETARDANT WIRE AND CABLE INSULATION COMPOSITIONS FOR ENHANCING MECHANICAL PROPERTIES AND FLAME RETARDANCY
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United States of America Patent
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app pub date -
Dec 17, 2012
filing date -
Jan 27, 2010
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Abandoned
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Abstract
This invention focuses on improving mechanical properties without deteriorating flame retardancy in peroxide cross-linked and radiation cross-linked thermosetting clean flame retardant compositions. Optimal mechanical properties can be obtained by modifying the ratios of MAGNIFIN H10A/Ultracarb LH 15X in peroxide crosslinked or radiation crosslinked clean flame retardant composition. Higher tensile strength can be obtained by higher MAGNIFIN H10A content, and higher elongation at break can be obtained by higher Ultracarb LH 15X content. The invented compositions show excellent mechanical properties, flame retardancy, thermal properties, electrical properties and process ability for meeting the stringent specifications of wire and cable industry. Composition is made of 100 parts by weight of resin (polyolefin or 100 parts by weight of polyolefin/EPDM), 90-150 parts by weight of MAGNIFIN H10A/Ultracarb LH 15X as main flame retardants, 1-20 parts by weight of auxiliary secondary flame retardant agents and 0.2-1.0 parts by weight of antioxidants.
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