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ISO 8987:2005 PDF — Plastics — Phenolic resins — Determination of reactivity on a B-trans… — GOST Standards

//ISO 8987:2005

ISO 8987:2005

Name: ISO 8987:2005 — Plastics — Phenolic resins — Determination of reactivity on a B-transformation test plate
SKU: ISO 8987:2005
Price: 25 EUR
Availability: InStock

Plastics — Phenolic resins — Determination of reactivity on a B-transformation test plate

Название (английский):

ISO 8987:2005

Plastics — Phenolic resins — Determination of reactivity on a B-transformation test plate

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 4
Дата публикации:: 23 сентября 2005 г.
Издание:: ISO IS 8987 edition 3 version 1
ICS:: 83.080.10

Тип поставки:

Full version25 €Ask AI2 €Read online 24h10 €Read online 72h15 €

Язык документа:

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Срок поставки:1 рабочий день

Цена:25 €

Описание (английский):

ISO 8987:2005 specifies methods for the determination of the B-transformation time of phenolic resins at a specified temperature and under specified conditions on a heated test plate. Two methods are described, each with a different test plate: Method A -- plate with depressions in the form of segments of spheres; Method B -- flat plate without depressions.

Abstract

Overview

Key topics and technical requirements

Scope and principle: Measures the time from initial contact of 0.5 g ± 0.05 g of resin with a heated plate until the resin reaches the B‑stage (gel/elastic behavior).
Two methods:
- Method A: Plate with depressions (segments of spheres). Agitation performed with a glass rod; B‑stage indicated when filaments formed with the rod break on lifting.
- Method B: Flat chromed plate (~15 × 15 cm). Resin spread with a spatula and stirred; B‑stage indicated when the material no longer stretches and appears gel‑like or rigid.
Apparatus and measurement control:
- Thermostatic control with temperature measurement accuracy of ±0.5 °C.
- Plate heating device or integrated heated plate; molten salts may be used as the heat‑transfer medium where applicable.
- Ancillary equipment: glass rod (Method A), spatula (Method B), balance (0.01 g readability), syringe for liquid resins, precise stopwatch.
Test procedure: Start the timer when resin contacts the plate; follow prescribed agitation/stirring patterns; record time to B‑stage in minutes and seconds.
Performance: Reported repeatability ±4% and reproducibility ±10%.
Test report requirements: Reference the standard and method used, sample identification, plate temperature, individual and mean B‑transformation times, and test date.

Applications and users

ISO 8987:2005 is practical for:

Manufacturers and formulators of phenolic resins who need to evaluate resin reactivity for molding, adhesives, laminates, coatings and other thermosetting applications.
Quality control and production laboratories monitoring batch‑to‑batch consistency.
R&D and polymer chemists developing or modifying phenolic resin systems and curing schedules.
Third‑party test labs and certification bodies performing standardized comparative testing.

Keywords: ISO 8987:2005, phenolic resins reactivity, B‑transformation test plate, Method A, Method B, heated test plate, thermostatic control, test method.

Related standards

Developed by ISO/TC 61 (Plastics), Subcommittee SC 12 (Thermosetting materials). For broader context, consult other ISO standards on plastics and thermosetting resin testing published by ISO/TC 61.

Технические детали

Технический комитет: ISO/TC 61/SC 12 - Thermosetting materials
SKU: ISO 8987:2005

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Открыть превью (2 стр.)

ISO 8987:2005

Abstract

Overview

Похожие стандарты

Key topics and technical requirements

Applications and users

Related standards

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