관심표준 등록 : 표준업데이트 시 알림을 받을 수 있습니다.
PDF : 직접 파일 다운로드 및 인쇄 (마이페이지 확인)
PRINT : 인쇄본 우편발송, 2~3일 소요(PDF파일 미제공)
구판
판매
Plastics — Determination of the viscosity of polymers in dilute solution using capillary viscometers — Part 2: Poly(vinyl chloride) resins
| 분야 | ISO/TC 61/SC 9 : Thermoplastic materials |
|---|---|
| 적용범위 | This part of ISO 1628 specifies conditions for the determination of the reduced viscosity (also known as viscosity number) and K-value of PVC resins. It is applicable to resins in powder form which consist of homopolymers of the monomer vinyl chloride and copolymers, terpolymers, etc., of vinyl chloride with one or more other monomers, but where vinyl chloride is the main constituent. The resins may contain small amounts of unpolymerized substances (e.g. emulsifying or suspending agents, catalyst residues, etc.) and other substances added during the course of the polymerization. This part of ISO 1628 is not applicable, however, to resins having a volatile-matter content in excess of 0,5 % ± 0,1 %, when determined in accordance with ISO 1269. In addition to this, it is not applicable to resins which are not entirely soluble in cyclohexanone. The reduced viscosity and K-value of a particular resin are related to its molecular mass, but the relationship varies depending on the concentration and type(s) of other monomer(s) present. Hence homopolymers and copolymers having the same reduced viscosity or K-value may not have the same molecular mass. The values determined for reduced viscosity and K-value, for a particular sample of PVC resin, are influenced differently by the concentration of the solution chosen for the determination. Hence the use of the procedures described in this part of ISO 1628 will only give values for reduced viscosity and K-value that are comparable when the concentrations of the solutions used are identical. Limiting viscosity number is not used for PVC resins. The experimental procedures described in this part of ISO 1628 can also be used to characterize the polymeric fraction obtained during the chemical analysis of a PVC composition. However, the values calculated for the reduced viscosity and K-value in these circumstances may not indicate the actual values for the resin used to produce the composition because of the impure nature of the recovered polymer fraction. |
| 국제분류(ICS)코드 | 83.080.20 : 열가소성 수지재 |
| 페이지수 | 14 |
| Edition | 2 |
| No. | 표준번호 | 표준명 | 발행일 | 상태 |
|---|---|---|---|---|
| 1 | ISO 1628-2:2020 | Plastics — Determination of the viscosity of polymers in dilute solution using capillary viscometers — Part 2: Poly(vinyl chloride) resins | 2020-06-26 | 표준 |
| 2 | ISO 1628-2:1998 | Plastics — Determination of the viscosity of polymers in dilute solution using capillary viscometers — Part 2: Poly(vinyl chloride) resins | 1998-12-10 | 구판 |
| 3 | ISO 1628-2:1988 | Plastics -- Determination of viscosity number and limiting viscosity number -- Part 2: Poly(vinyl chloride) resins | 1988-12-29 | 구판 |
ISO 1628-1 - Plastics — Determination of the viscosity of polymers in dilute solution using capillary viscometers — Part 1: General principles 상세보기
ISO 1628-3:1991/DAmd 1 - 상세보기
ISO 1628-6:1990 - Plastics — Determination of viscosity number and limiting viscosity number — Part 6: Methyl methacrylate polymers 상세보기
ISO 1628-5:1998 - Plastics — Determination of the viscosity of polymers in dilute solution using capillary viscometers — Part 5: Thermoplastic polyester (TP) homopolymers and copolymers 상세보기
ISO 1628-4:1999 - Plastics — Determination of the viscosity of polymers in dilute solution using capillary viscometers — Part 4: Polycarbonate (PC) moulding and extrusion materials 상세보기
함께 구입한 상품이 존재하지 않습니다.
IEC TS 63134:2020 - Active assisted living (AAL) use cases 상세보기
IEC 60034-5:2020 RLV - Rotating electrical machines - Part 5: Degrees of protection provided by the integral design of rotating electrical machines (IP code) - Classification 상세보기
KS B ISO TS 25740-1 - 에스컬레이터 및 무빙워크에 대한 안전요건 — 제1부: 세계공통 필수 안전요건(GESRs) 상세보기
KS B ISO TS 8100-21 - 승객 및 화물 운송용 엘리베이터 —제21부: 세계공통 필수안전요건(GESRs)을 충족하는 세계공통 안전 파라미터(GSPs) 상세보기
KS C IEC TS 62872 - 산업 시설과 스마트 그리드 사이의 산업 공정 측정, 제어 및 자동화 시스템 인터페이스 상세보기
KS표준
핸드북
