CONTAINER FOR PRECISION MEMBER AND METHOD FOR PREPARING THE SAME

• Main Authors: HUR, JONG CHAN, CHI, JUN HO, CHEI, WOO SUK, LEE, EUN BYUL
• Format: Patent
• Language: English; Korean
• Published: 30.11.2016
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MAKING GRANULES OR PREFORMS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SEMICONDUCTOR DEVICES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The present invention relates to a precision member storage container prepared from a polycarbonate resin. The polycarbonate resin is a pelletized extrudate formed by extruding a polymer prepared by melting and polymerizing aromatic dihydroxy compounds and diaryl carbonate with an extruder having a vent apparatus equipped on an end. When the 35 g polycarbonate resin sample is added to 50 g of water, allowed to stand under 12 hours at 50C, and then shaken at a room temperature for 12 hours to prepare a polycarbonate resin solution by ion chromatography (IC) for the detection, the polycarbonate resin solution has chlorine ions (Cl^-), fluorine ions (F^-), and sulfuric acid ions ((SO_4)^2-) in a concentration of about 0.2 to 1.8 ppb individually. When headspace-solid phase microextraction (HS-SPME) is used to measure gas generated when the polycarbonate resin is heated, the number of detected peaks is 15 to 23 while the detection area value is 3 10^6 to 8 10^7 Area/g. The precision member storage container can preserve and transport precision members which can be predisposed to damage by a fine amount of impurities or contaminants without damage. 본 발명의 정밀 부재용 수납 용기는 폴리카보네이트 수지로부터 형성된 정밀 부재용 수납 용기이며, 상기 폴리카보네이트 수지는 방향족 디히드록시 화합물 및 디아릴카보네이트를 용융 중합하여 제조한 중합물을 끝단에 벤트(vent) 장비가 부설된 압출기로 벤트하며 압출하여 펠렛화한 압출물이고, 상기 폴리카보네이트 수지 시료 35 g을 50 g의 물에 넣고, 50℃에서 12시간 방치한 후, 상온에서 12시간 흔들어 준 용액을 IC(ion chromatography)로 검출 시, 염소 이온(Cl), 불소 이온(F) 및 황산 이온(SO)이 각각 독립적으로 0.2 내지 1.8 ppb이고, 상기 폴리카보네이트 수지 가열 시 발생하는 가스를 HS-SPME GC/MS로 측정 시, 검출되는 피크(peak) 수가 15 내지 23개이고, 검출 면적 값이 3 × 10내지 8 × 10Area/g인 것을 특징으로 한다. 상기 정밀 부재용 수납 용기는 미량의 불순물 또는 오염물질에 의해서도 손상을 입는 정밀 부재를 손상 없이 보존 및 운반할 수 있다.