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Nylon 6 Composites Preparation and Properties

Author: WangYongLi
Tutor: YangXuJie
School: Nanjing University of Technology and Engineering
Course: Applied Chemistry
Keywords: Magnesium borate whisker Ammonium polyphosphate Microencapsulation Composites Nylon 6 Strengthen Flame
CLC: TQ323.6
Type: Master's thesis
Year: 2010
Downloads: 263
Quote: 0
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Abstract


Synthesized using cosolvent magnesium borate whisker, the optimum conditions for the synthesis of : preparing raw MgCl2 · 6H2O, Na2B4O7 · 10H2O, KCl in n (Mg: B: K) is 1:2:2 , reaction temperature 800 ℃, reaction time 8h. A transmission electron microscope (TEM), scanning electron microscope (SEM) observation of the structure of magnesium borate whisker , by X-ray diffraction (XRD) analysis of crystalline magnesium borate whiskers . With sodium dodecyl benzene sulfonate as a modifier for magnesium borate whisker modified to observe the modified structure of magnesium borate whisker , and measure its activation index . The results showed that the modified agent is adhered to the surface of magnesium borate whisker , magnesium borate whisker surface wettability change. Situ polymerization using melamine formaldehyde resin ammonium polyphosphate (APP) for microencapsulation . By infrared spectroscopy (FT-IR) and SEM study , melamine - formaldehyde resins have been coated on the surface APP . Thermogravimetric analysis (TG) and differential scanning calorimetry (DSC) analysis showed that , MAPP thermal decomposition temperature and APP rather , as well to maintain flame retardant properties of APP . APP microencapsulation process conditions, the peak decomposition temperature variation is also different . Respectively, before and after modification magnesium borate whiskers and ammonium polyphosphate according to the proportion of nylon 6 by twin screw extruder granulation, prepared nylon 6 composites . Using SEM and TG , on the preparation of the resulting material rheology, thermal properties, mechanical properties and flame retardance were analyzed . The results showed that the modified magnesium borate whisker reinforced nylon 6 effects and microencapsulated ammonium polyphosphate flame retardant effect is very obvious.

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CLC: > Industrial Technology > Chemical Industry > Synthetic resins and plastics industry > Polycondensation resin and plastic > Polyamide resin and plastic
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