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Process for preparing polycarbonate /acrylonitirle-ternary ethyl propylene rubber-styrene resin / laminated silicate nano composite material

A technology of EPDM rubber and nanocomposite materials, which is applied in the field of polymer nanocomposite material preparation to achieve the effects of increasing strength and modulus, improving flame retardancy and high production efficiency

Inactive Publication Date: 2007-01-24
SHANGHAI JIAO TONG UNIV
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  • Abstract
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Problems solved by technology

There are also reports on flame-retardant ABS / montmorillonite composites (Wang SF, et al.PolymerInternational, 2003, 52(6): 1045-1049), but layered silicates (such as montmorillonite) and flame retardants are used There is no report on synergistically improving the flame retardancy of PC / AES alloys

Method used

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  • Process for preparing polycarbonate /acrylonitirle-ternary ethyl propylene rubber-styrene resin / laminated silicate nano composite material
  • Process for preparing polycarbonate /acrylonitirle-ternary ethyl propylene rubber-styrene resin / laminated silicate nano composite material

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Embodiment 1-3

[0030] (1) Organic modification of sodium montmorillonite. 10 parts of sodium-based montmorillonite, 1000 parts of dispersion medium water, 10 parts of dimethyl dihydrogenated tallow ammonium chloride, vigorously stirred at 60°C, and carried out cation exchange reaction to obtain organic montmorillonite, which was vacuum- Dry in an oven at 80°C for 24 hours before use.

[0031] (2) Add organic montmorillonite and polycarbonate, acrylonitrile-EPDM rubber-styrene resin, flame retardant, anti-dripping agent and antioxidant to the high-speed mixing with heating device according to the formula in Table 1 Machine, mix at 100°C at 800 rpm for 30 minutes, then add the resulting mixture and all other remaining materials to a high-speed mixer and mix at room temperature at 600 rpm for 20 minutes, and finally the mixed material passes through The twin-screw extruder is extruded at 220-240° C., cooled, dried, and pelletized to obtain polycarbonate / acrylonitrile-EPDM rubber-styrene resin / ...

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Abstract

The present invention discloses process of preparing polycarbonate / acrylonitrile-ternary ethyl propylene rubber-styrene resin / laminated silicate nanometer composite material. The preparation process includes pre-mixing polycarbonate 55-80 weight portions, acrylonitrile-ternary ethyl propylene rubber-styrene resin 10-30 weight portions, flame retardant 1-10 weight portions, laminated silicate 1-10 weight portions, drippage resisting agent 0.1-2 weight portions and antioxidant 0.1-1 weight portion in a high speed mixer; and subsequent melting and extruding in an extruder. The composite material with montmorillonite of 5 weight portions has an increase in strength, modulus and thermal deformation temperature of 7 %, 11.3 % and 18.6 % separately compared with that before modification. The composite material has balanced comprehensive performance and may be used in electric appliance, electronic equipment and other fields.

Description

technical field [0001] The invention relates to a preparation method of a polymer nanocomposite material, in particular to a preparation method of a polycarbonate / acrylonitrile-EPDM rubber-styrene resin / layered silicate nanocomposite material. Background technique [0002] The flame retardants of halogen-free flame-retardant polycarbonate (PC) mostly use phosphates (esters), sulfonates (esters), antimony oxides, alkali metal and alkaline earth metal salts, siloxane and other flame retardants. . Due to the addition of flame retardants, the impact strength of PC is greatly reduced, and the patent also reports that the toughness of the material can be improved by adding rubber elastomers, styrene-based elastomers, etc. AES resin is an acrylonitrile-EPDM-styrene copolymer obtained by substituting ethylene-propylene-diene rubber (EPDM) for butadiene in acrylonitrile-butadiene-styrene copolymer (ABS). Compared to butadiene, EPDM is a more stable rubber with a small amount of dou...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08K9/04C08L55/00C08K3/34C08K5/54C08K5/524
Inventor 万超瑛刘波张勇张隐西吉继亮苏妤
Owner SHANGHAI JIAO TONG UNIV
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