ISO 1652:2011 PDF

Name: ISO 1652:2011 — Rubber latex — Determination of apparent viscosity by the Brookfield test method
SKU: ISO 1652:2011
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Rubber latex — Determination of apparent viscosity by the Brookfield test method

Название (английский):

ISO 1652:2011

Rubber latex — Determination of apparent viscosity by the Brookfield test method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 9
Дата публикации:: 10 марта 2011 г.
Издание:: ISO IS 1652 edition 4 version 1
ICS:: 83.040.10

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Описание (английский):

ISO 1652:2011 specifies a method for the determination of the apparent viscosity of both natural rubber latex concentrate and synthetic rubber latices by the Brookfield method. The method is also suitable for the determination of the viscosity of natural latices from sources other than Hevea brasiliensis and also for compounded latices.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 1652:2011 - "Rubber latex - Determination of apparent viscosity by the Brookfield test method" specifies a standardized procedure to measure the apparent viscosity of natural and synthetic rubber latices using a Brookfield-type rotational viscometer. The method applies to Hevea and non‑Hevea natural latices, latex concentrates and compounded latices. The standard covers sampling references, sample preparation (including dilution to a specified total‑solids content), test conditions and reporting requirements.

Key keywords: ISO 1652:2011, rubber latex viscosity, Brookfield method, apparent viscosity, viscometer, latex testing, total solids.

Key topics and technical requirements

Test principle: Torque on a rotating spindle immersed in latex is read on a scale and converted to apparent viscosity using spindle/ speed-dependent factors.

Equipment: Manual Brookfield-type viscometer (L or R instruments) with specified spindles and removable guard; glass beaker (≥85 mm internal diameter, ~600 cm³); temperature-controlled water bath.

Speeds and spindles: Standard rotational frequencies specified for the two instrument types (L and R). Spindle selection is important to keep readings in the preferred range (about 10–90 scale units).

Conversion factors: Scale readings are converted to mPa·s (cP) using factors given in the standard (examples: L1 ×1; L2 or R1 ×5; L3 or R2 ×20; R3 ×50).

Temperature control: Tests performed at 23 °C ±2 °C (or 27 °C ±2 °C in tropical climates); precise test temperature must be recorded.

Sample preparation: Total solids determined per ISO 124; dilute with high-purity water where required; remove occluded air by standing or vacuum (procedures vary with viscosity).

Precision and validation: Annex B reports precision from an interlaboratory study (repeatability/reproducibility); users should apply these data appropriately.

Reporting: Test report must reference ISO 1652, include sample ID, instrument and spindle used, solids content, temperature, result units, and any deviations.

Applications and users

Quality control and incoming inspection in rubber manufacturing (latex concentrate producers, glove and dipped goods manufacturers).

R&D and formulation labs evaluating rheological behavior of natural or synthetic latices and additives.

Laboratories performing comparative studies, process monitoring, or supplier qualification.

Regulatory and standards bodies needing reproducible viscosity data for specifications.

Practical value: standardized Brookfield testing gives consistent, comparable apparent-viscosity measurements for process control, product specification and R&D comparisons.

Related standards

ISO 123 - Rubber latex - Sampling

ISO 124 - Latex, rubber - Determination of total solids content

ISO 2555, ISO 3219 - Related viscosity test methods for polymers and emulsions

Using ISO 1652:2011 helps ensure reproducible latex viscosity data for manufacturing control, specification compliance and technical assessment.

ISO 1652:2011 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

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