Ultraviolet Curing Resin Property Measuring Apparatus

An ultraviolet curing resin property measuring apparatus for determining the viscosity or viscoelasticity of a specimen on the basis of a detected torque, comprising:

• a rotating plate supported rotatably about a center axis;
• a torque detection plate disposed on the same axis parallel to the rotating plate, with a given gap left between the two plates;
• a torque detection means for detecting a torque exerted on the torque detection plate through the specimen of an ultraviolet curing resin held between the rotating plate and the torque detection plate when the rotating plate is turned;
• a total reflection prism, applied to either the rotating plate or the torque detection plate, which is made from a material that has a greater refractive index than the ultraviolet curing resin and transmits infrared light;
• an ultraviolet transmitting plate, applied to the other plate, which is made from a material that transmits ultraviolet light;
• an ultraviolet irradiation means disposed on the other side of the ultraviolet transmitting plate from the specimen, for directing an ultraviolet beam onto the specimen through the ultraviolet transmitting plate;
• an infrared irradiation means for directing an infrared beam into the total reflection prism;
• an infrared detection means for detecting the infrared beam emerging from the total reflection prism after total reflection from the interface between the prism and the specimen;
• and
• a spectrum analysis means for analyzing the infrared absorption spectrum of the specimen on the basis of the infrared beam detected by the infrared detection means,
• wherein, while the viscosity or viscoelasticity of the ultraviolet curing resin in the curing process is measured, the spectrum analysis means simultaneously measures the infrared absorption spectrum of the ultraviolet curing resin.

An ultraviolet curing resin property measuring apparatus for determining the viscosity or viscoelasticity of a specimen on the basis of a detected torque, comprising:

• a rotating plate supported rotatably about a center axis;
• a torque detection plate disposed on the same axis parallel to the rotating plate, with a given gap left between the two plates;
• a torque detection means for detecting a torque exerted on the torque detection plate through a specimen of an ultraviolet curing resin held between the rotating plate and the torque detection plate when the rotating plate is turned;
• a light transmitting plate, applied to either the rotating plate or the torque detection plate, which is made from a material that transmits ultraviolet light and infrared light;
• an ultraviolet irradiation means disposed on the other side of the light transmitting plate from the specimen, for directing an ultraviolet beam onto the specimen through the light transmitting plate;
• an infrared irradiation means for directing an infrared beam into the light transmitting plate;
• and
• a gap detection means for detecting the gap between the rotating plate and the torque detection plate on the basis of the phase difference between an infrared beam reflected from the interface between the light transmitting plate and the specimen and an infrared beam reflected from the back side of the specimen through the interface,
• wherein, after adjusting the gap by using the gap detection means, the measuring apparatus measures the viscosity or viscoelasticity of the ultraviolet curing resin in the curing process.