phenol 樹脂의 成形時의 流動性에 對하여 = On the Flowability of Phenol Resin during Moulding Process

다국어 초록 (Multilingual Abstract)

The author has condcted an experiment on the flowability of phenol resin produces by two-stage process of wood power using an extrusing-through-smallorifice tipe viscometer according to the principle of the KOKA flow-tester, and obtained the plunger displacement va. time relation with regard to the flowability of un-prerdied, completely dried, and intermediate materials. The moulding compound has first showed the minium melting viscosity as the temperature rises and ceased to flow as the setting reaction proceeds, and the fall of the melting viscosity due to contained moisture and its influence on the viscosity has been boty significant.The amount of moisture causes an increase of the flow in all cases regardless of time and temperature, the water in this case playing the role oa a lubrican to heighten its flowability. The fact that the total weight of the flow at 180℃ stood less than that at 160℃ is interpreted as the flow-time curve being the combined one of the falling viscosity due to temprature rise and the rise of viscosity due to setting reaction. It is indicated that relation between the preheat of the metal mould and flowability in the shaping process need be strictly adjusted by means of the timing of the stop of the mould and that the rational shaping can be expected only through the adaptation of temperature rise in the mould to the timing of the application of pressure.

목차 (Table of Contents)

• 1. 緖 言
• 2. 實 驗
• 1) 實驗說明 및 試料
• 2) 實驗法
• 3. 實驗結果
• 4. 考 察