CR-39 - Wikipedia
ウェブPrincipally used for the detection of alpha radiation emitting radionuclides (especially radon gas), the radiation-sensitivity properties of CR-39 are also used for proton and neutron dosimetry and historically cosmic ray investigations.
PPG CR-39 Monomer | PPG Optical Materials
ウェブPerformance. Our proprietary PPG CR-39 allyl-diglycol-carbonate (ADC) monomer combines the optics of glass with the durability of a thermoset material. The benefits are clear.
Lens Material Properties - EyeWiki
ウェブ2024年2月12日 · CR-39 which stands for Columbia resin #39 is the most commonly used plastic polymer lens material. The lenses block 80% of ultraviolet light without treatment, and can be tinted and coated to provide further ultraviolet light blocking.
ウェブ2006年4月20日 · Copolymers - Several copolymer formulations of CR-39 monomer can be produced to meet needs for specific combinations of properties such as increased heat distortion temperature, impact resistance, …
Properties of CR-39 polymer material. - ResearchGate
ウェブThe distinctive optical properties (refractive index of 1.55, abbe number of 41.91) of this polymer, the high refractive index of the polymer helps to focus light and increase the ray bending to...
CR39 Lens Technology : Imperial Optics
ウェブWHAT IS CR39? CR-39 plastic, or” Columbia Resin #39” named after a resin formulation used by the original manufacturer, has become one of the most common plastics used to make lenses. CR-39 is an optical degree for plastic polymer which is measured by the light weight, chemical resistance properties and tint-ability.
Optical, structural, and chemical properties of CR-39 ...
ウェブ2016年11月18日 · Poly-allyl-diglycol-carbonate polymer (CR-39) with chemical formula C 12 H 18 O 7 is one of the most important polymers, which has been extensively used for a number of applications, e.g. detection of ions, biological filters, magnetic nano-wires as magneto resistive sensors, etc.
Polymerisation, structure and track recording properties of CR-39
ウェブ1991年1月1日 · The structure of the CR-39 network can be characterised by two main parameters: 1. the concentration of effective diethylene dicarbonate crosslinks which actually join two polyallyl chains (as opposed to "dangling"links and free monomer molecules which both contain unpolymerised allyl groups) and 2. the average length of …
Measurement of thermal and optical properties of CR-39 solid ...
ウェブ2013年8月1日 · The CR-39 detector is selected because of its good sensitivity, stability against various environmental factors, and high degree of optical clarity [2], [3]. CR-39 is convenient for the detection of alpha particles and fast neutrons because of its high detection efficiency, high sensitivity, and short etching time [4].
The Polymer Physics of CR-39 - Oxford Academic
ウェブ1987年8月1日 · Abstract. CR-39 polymer is a highly cross-linked thermoset prepared by polymerisation of diethylene glycol bis (allyl carbonate) monomer. The polymerisation is i.
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