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//ISO 3344:1997

ISO 3344:1997

Name: ISO 3344:1997 — Reinforcement products — Determination of moisture content
SKU: ISO 3344:1997
Price: 25 EUR
Availability: InStock

Reinforcement products — Determination of moisture content

Название (английский):

ISO 3344:1997

Reinforcement products — Determination of moisture content

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 5
Дата публикации:: 8 мая 1997 г.
Издание:: ISO IS 3344 edition 2 version 1
ICS:: 59.100.01

Тип поставки:

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

Язык документа:

ruen

Срок поставки:1 рабочий день

Цена:25 €

Описание (английский):

La présente Norme internationale prescrit une méthode pour la détermination du taux d'humidité des produits de renfort tels que fils continus, fils discontinus, stratifils, fils coupés, mats, tissus et autres formes de renforts réalisés à partir de fibres de verre textile, de carbone ou d'aramide.

Abstract

Overview

ISO 3344:1997 is an international standard that specifies the method for determining the moisture content in reinforcement products. These products include continuous and discontinuous fibers, stratifils, chopped fibers, mats, fabrics, and other reinforcement forms made from textile glass fibers, carbon fibers, or aramid fibers. Accurate moisture content determination is essential for quality control and performance assessment of composite materials reinforced with these fibers.

Key Topics

Scope of Testing
The standard applies to various reinforcement products, including:
- Continuous fibers
- Discontinuous fibers
- Stratifils
- Chopped fibers
- Mats and fabrics
Definition of Moisture Content
Moisture content is defined as the mass percentage of water contained in the reinforcement product relative to its wet mass.
Test Principle
Weighing the specimen at ambient temperature before and after drying at 105°C (±3°C) to determine moisture loss.
Apparatus Required
Includes a ventilated hot-air oven, desiccator with drying agents, heat-resistant specimen supports, stainless steel tongs, precision balance (accurate to 0.1 mg), cutting templates, and suitable weighing vessels for certain fibers.
Specimen Selection and Preparation
Guidelines on specimen size, sampling locations, and quantity:
- At least one specimen per sample for continuous or discontinuous fibers, stratifils, and chopped fibers.
- Multiple specimens for fabrics (3 per meter width) spread across the sample width.
- Specimen sizes vary from 5 g to 100 cm² depending on product type.
Conditioning and Testing Atmosphere
Conditioning specimens in normal atmosphere as per ISO 291 standard to reach equilibrium moisture content or performing rapid testing for products with expected moisture content above 0.2%.
Test Procedure
Detailed stepwise instructions for
- Stabilizing and weighing the support
- Weighing initial moist specimen
- Drying specimen in oven and final weighing
Result Calculation
Moisture percentage is calculated using recorded masses before and after drying, adjusted for the support mass if applicable.
Reporting Requirements
Comprehensive reporting includes product identification, specimen details, individual and average moisture values, operational parameters, and test date.
Method Reliability
The standard notes the absence of inter-laboratory reproducibility data and mentions ongoing collaborative studies to improve confidence in the method.

Applications

ISO 3344:1997 plays a crucial role in industries and laboratories involved in composite materials manufacturing and testing, where reinforcement fibers influence mechanical properties and durability. Key application areas include:

Quality control in fiberglass, carbon fiber, and aramid fiber production
Moisture analysis during composite material preform preparation
Research and development for new reinforcement textiles and mats
Ensuring compliance with material specifications and standards
Supporting failure analysis and performance testing through moisture content evaluation

Adhering to this standard aids manufacturers and testing laboratories in achieving consistent, reproducible moisture content measurements, thereby optimizing product quality and ensuring reliable composite performance.

Related Standards

ISO 3344 references or correlates with several relevant standards that complement moisture content determination in plastic and composite materials:

ISO 291: Plastics - Standard atmospheres for conditioning and testing
ISO 1886: Methods for sampling fiber reinforcement materials for quality control
Standards on moisture measurement for other composite constituents or related plastics testing
Regional or industry-specific reinforcement product specifications incorporating ISO 3344 as a testing reference

Following these related standards alongside ISO 3344 ensures cohesive and universally accepted methods for handling and analyzing reinforcement products, contributing to international trade and regulatory compliance.

Keywords: ISO 3344, moisture content determination, reinforcement products, fibers testing, composite materials, textile glass fibers, carbon fibers, aramid fibers, quality control, moisture measurement method, hot-air oven drying, specimen conditioning, ISO standard.