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  • BS 2782-7:Method 732F:1991

    Current The latest, up-to-date edition.

    Methods of testing plastics. Rheological properties Determination of viscosity number of methyl methacrylate polymers

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  28-06-1991

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    National foreword
    Committees responsible
    Method
    1. Scope
    2. Normative references
    3. Definitions and units
    4. Principle
    5. Measurements
    6. Apparatus
    7. Solvent and test solution
    8. Temperature of measurement
    9. Procedure
    10. Expression of results
    11. Test report
    Annexes
    A. Calibration of the viscometer
    B. Determination of the limiting viscosity number
    C. Bibliography
    Figure
    A.1 Kinetic energy correction as a function of the
         reciprocal of efflux time

    Abstract - (Show below) - (Hide below)

    Method for determination in dilute solution.

    Scope - (Show below) - (Hide below)

    This part of ISO 1628 specifies the conditions to be used for the determination of the viscosity number of methyl methacrylate polymer moulding and extrusion materials in dilute solution.

    It applies to methyl methacrylate (MMA) homopolymers and copolymers, and mixtures of the two with a minimum of 80 % (m/m) of MMA and up to 20 % (m/m) of other monomers, with and without additives, as defined in ISO 8257-1.

    NOTE The dilute-solution viscosity of polymers can be also expressed as a limiting viscosity number [η] (see Annex B).

    General Product Information - (Show below) - (Hide below)

    Committee PRI/82
    Development Note Also numbered as ISO 1628-6 Supersedes 87/38634 DC (06/2005) Reviewed and confirmed by BSI, October 2007. (09/2007)
    Document Type Standard
    Publisher British Standards Institution
    Status Current

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS 7825-3.7:1998 Calibration of rubber and plastics test equipment. Calibration schedules Rheological properties

    Standards Referencing This Book - (Show below) - (Hide below)

    BS 1752:1983 Specification for laboratory sintered or fritted filters including porosity grading
    BS 2782-7 Method 732A:1991 Methods of testing plastics. Rheological properties Determination of viscosity number:general conditions
    ISO 8257-1:1998 Plastics Poly(methyl methacrylate) (PMMA) moulding and extrusion materials Part 1: Designation system and basis for specifications
    ISO 3105:1994 Glass capillary kinematic viscometers — Specifications and operating instructions
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