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ISO 1628-2:2020
Plastics — Determination of the viscosity of polymers in dilute solution using capillary viscometers — Part 2: Poly(vinyl chloride) resins- 발행일 : 2020-06-26
- 발행기관 : ISO
상세정보
| 분야 | ISO/TC 61/SC 9 : Thermoplastic materials |
|---|---|
| 적용범위 | 1.1 This document 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 document 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. 1.2 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 might not have the same molecular mass. 1.3 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 document only gives values for reduced viscosity and K-value that are comparable when the concentrations of the solutions used are identical. 1.4 Limiting viscosity number is not used for PVC resins. 1.5 The experimental procedures described in this document 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 might 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 | 15 |
| Edition | 3 |
이력정보
| No. | 표준번호 | 표준명 | 발행일 | 상태 |
|---|---|---|---|---|
| 1 | ISO 1628-2:2020상세보기 | 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 1628-2:1998상세보기 | 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 1628-2:1988상세보기 | Plastics -- Determination of viscosity number and limiting viscosity number -- Part 2: Poly(vinyl chloride) resins | 1988-12-29 | 구판 |
관련상품
- ISO 1628-3:1991/DAmd 1 -
- ISO 1628-6:1990 - Plastics — Determination of viscosity number and limiting viscosity number — Part 6: Methyl methacrylate polymers
- 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
- 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
- ISO 1628-3:2010 - Plastics — Determination of the viscosity of polymers in dilute solution using capillary viscometers — Part 3: Polyethylenes and polypropylenes
다른 사람이 함께 구입한 상품
- 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
- ISO 1628-6:1990 - Plastics — Determination of viscosity number and limiting viscosity number — Part 6: Methyl methacrylate polymers
- 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
- ISO 1628-3:2010 - Plastics — Determination of the viscosity of polymers in dilute solution using capillary viscometers — Part 3: Polyethylenes and polypropylenes
- ISO 1628-1:2009 - Plastics — Determination of the viscosity of polymers in dilute solution using capillary viscometers — Part 1: General principles
추천 상품
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- KS C IEC TS 62872 - 산업 시설과 스마트 그리드 사이의 산업 공정 측정, 제어 및 자동화 시스템 인터페이스
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