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Capacity increasing modifying method for polyphenylene oxide / nylon 6 alloy

A technology of compatibilization and modification, polyphenylene ether, which is applied in the field of compatibilization and modification of polyphenylene ether/nylon 6 alloy, can solve the problems of poor mechanical properties and impact resistance, and improve compatibility and system compatibility. properties, and the effect of reducing interfacial tension

Inactive Publication Date: 2009-08-05
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Aiming at the problems of severe phase separation of polyphenylene ether / nylon 6 and poor mechanical properties, especially impact resistance, the present invention adopts nylon 6 / styrene-maleic anhydride copolymer as a compatibilizer and prepares polyphenylene oxide by melt extrusion process. Ether / nylon 6 alloy modified material

Method used

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  • Capacity increasing modifying method for polyphenylene oxide / nylon 6 alloy
  • Capacity increasing modifying method for polyphenylene oxide / nylon 6 alloy
  • Capacity increasing modifying method for polyphenylene oxide / nylon 6 alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1—3

[0024] 1. Nylon 6 and styrene-maleic anhydride copolymer were pre-dried under vacuum at 80°C for 12 hours;

[0025] 2. After mixing 50 parts of styrene-maleic anhydride copolymer and 50 parts of nylon 6, put them into a twin-screw extruder for extrusion and granulation. The screw temperature is 230-250 °C and the screw speed is 150 rpm. Continuous extrusion granulation 1 time (embodiment 1), 2 times (embodiment 2), 4 times (embodiment 3), obtain the blend of nylon 6 / styrene-maleic anhydride copolymer;

[0026] 3. Add the blend of nylon 6, polyphenylene ether and nylon 6 / styrene-maleic anhydride copolymer into the twin-screw extruder according to the ratio in Table 1 for extrusion and granulation, and the screw temperature is 240~ 250°C, screw speed 100-170 rpm, a compatibilized polyphenylene ether / nylon 6 alloy is obtained.

[0027] The performance test of the polyphenylene ether / nylon 6 alloy obtained in Examples 1-3 is shown in Table-1, figure 1It is the liquid nitrogen em...

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Abstract

The invention discloses a polyphenylether / nylon 6 alloy compatibilizing and modifying method which comprises the following steps: nylon 6 and styrene-maleic anhydride copolymer are dried in a vacuum state, and then 30-50 portions of styrene-maleic anhydride copolymer and 50-70 portions of nylon 6 are added in a double-screw extruder to be extruded and granulated so that the blend of nylon 6 / styrene-maleic anhydride copolymer is prepared; and 50-80 portions of nylon 6 dried in a vacuum state, 20-50 portions of polyphenylether and 2-20 portions of nylon 6 and styrene-maleic anhydride copolymer are extruded and granulated so that polyphenylether / nylon 6 alloy compatibilizing and modifying material is prepared. Compared with the simple blend of polyphenylether / nylon 6, the polyphenylether / nylon 6 alloy compatibilizing and modifying material has the tensile strength of 76 Mpa and the notch impact strength of 33.5 J / m which are respectively improved by 50 percent and 40 percent.

Description

technical field [0001] The invention relates to a method for modifying a polymer alloy, in particular to a method for compatibilizing and modifying a polyphenylene ether / nylon 6 alloy. Background technique [0002] Since A.S.Hay first used the oxidative coupling method to obtain high-yield, high-molecular-weight poly(2,6-dimethyl-1,4-phenylene ether) (referred to as "polyphenylene ether") in 1957, the polyphenylene ether industry has gained Rapid development. In 1966, GE successfully developed the first generation of polyphenylene ether modified products (trade name Noryl), which greatly accelerated the application and research of polyphenylene ether. So far, polyphenylene ether and modified polyphenylene ether have become the fourth largest thermoplastic engineering plastics after polyamide, polycarbonate and polyoxymethylene. Unmodified polyphenylene ether has good mechanical properties and electrical insulation properties; excellent heat resistance (Tg = 210 ° C, the ma...

Claims

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Application Information

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IPC IPC(8): C08L71/12C08L77/00C08L25/08C08L35/00B29C47/92B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C2948/92895
Inventor 王帅李波张勇
Owner SHANGHAI JIAO TONG UNIV
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