Ultrathin halogen-free flame retardant polycarbonate film and preparation method thereof

A technology of flame-retardant polycarbonate and polycarbonate, which is applied in the field of polycarbonate film and its preparation, can solve the problems of polycarbonate film that cannot reach the flame-retardant level, reduce flame retardancy, and poor support, and achieve excellent appearance, High flame retardant efficiency and good compatibility
CN102863772AInactive Publication Date: 2013-01-09SICHUAN LONGHUA FILM CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN LONGHUA FILM CO LTD
Publication Date
2013-01-09
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention discloses an ultrathin halogen-free flame retardant polycarbonate film and a preparation method thereof. Materials of the ultrathin halogen-free flame retardant polycarbonate film comprise 45% to 99% of polycarbonate resins, 0.5% to 40% of halogen-free flame retardant, 0.1% to 2% of anti-drip agents, 0.2% to 10% of modifying agents and 0.2% to 3% of auxiliaries, the materials are fully and uniformly mixed through a high-speed mixer, the mixed materials enter into a twin-screw extruder from a feeding machine to be subjected to melt extrusion granulation, and granular materials enter into the extruder from the feeding machine to prepare the film. According to the developed ultrathin halogen-free flame retardant polycarbonate film, the flame retardant rating can reach to UL94 VTM-0 grade in a thickness range from 0.025mm to 0.100mm, the relative heat resistance index can reach to 80 DEG C to 130 DEG C, and the ultrathin halogen-free flame retardant polycarbonate film is stable in performances and environment-friendly.
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Description

technical field

[0001] The invention relates to a polycarbonate film and a preparation method thereof, in particular to an ultra-thin halogen-free flame-retardant polycarbonate film and a preparation method thereof. Background technique

[0002] Polycarbonate (PC) has comprehensive and balanced mechanical properties, dimensional stability and heat resistance, especially known for its excellent impact strength and creep resistance. The visible light transmittance of PC resin is more than 90%, the thermal decomposition temperature is high, and it has excellent electrical insulation. It is widely used in many fields such as machinery, automobiles, aerospace, construction, electronics, electrical, office and household products.

[0003] In order to meet the high requirements for the flame retardancy of polycarbonate films in certain application fields, it must be flame-retardant treated. Traditional flame retardants often use halogen-containing flame retardants, although most ha...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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