Lim

Ämnesområden: Lim; Bygg och trälim
Kommittébeteckning: SIS/TK 162 (Lim och limningsteknik)
Källa: ISO
Svarsdatum: den 28 aug 2019
Se merSe mindre
 

This part of ISO 26842 gives guidelines to select, by means of delamination-resistance tests, adhesive/wood combinations in non-severe environments, in which the products are not exposed to extreme changes in temperature and humidity.

A series of exposure cycles at various temperature and humidity values is provided to verify that the adhesive selected, or a product bonded with the adhesive, meets the necessary requirements for resistance to delamination.

This part of ISO 26842 is intended to help the user not only to select a suitable adhesive, but also to evaluate adhesives and adhesively bonded wood products.

NOTE When actual wood products are tested using this method, the test results might not be comparable because the test laboratory will not normally have had adequate control over the way the product was assembled.

This part of ISO 26842 is not intended for use in the qualification of structural components.

Ämnesområden: Lim; Bygg och trälim
Kommittébeteckning: SIS/TK 162 (Lim och limningsteknik)
Källa: ISO
Svarsdatum: den 28 aug 2019
Se merSe mindre
 

This part of ISO 26842 gives guidelines to select, by means of delamination-resistance tests, adhesive/wood combinations for use in wood products placed in severe environments, in which the products are exposed to extreme change of temperature and humidity. A series of exposure cycles at various temperature and humidity values is provided to verify that the adhesive selected, or a product bonded with the adhesive, meets the necessary requirements for resistance to delamination.

This part of ISO 26842 is intended to help the user not only to select a suitable adhesive, but also to evaluate adhesives and adhesively bonded wood products.

NOTE When actual wood products are tested using this method, the test results might not be comparable because the test laboratory will not normally have had adequate control over the way the product was assembled.

This part of ISO 26842 is not intended for use in the qualification of structural components.

Ämnesområden: Lim
Kommittébeteckning: SIS/TK 162 (Lim och limningsteknik)
Källa: CEN
Svarsdatum: den 29 aug 2019
Se merSe mindre
 

This document specifies a measuring method for the characterization of rheological properties of structural adhesives using oscillatory rheometry. The advantage of the method in comparison to rotational viscometry measurements lies in the separation of elastic and viscous material properties, thus allowing to define the viscoelastic properties. This enables more precise information concerning the flow behaviour of the materials, thereby resulting in a better understanding of their processing properties.

The method described is particularly suitable for filled and paste-like adhesives. These are frequently processed using automated pump and application systems in industrial applications and will be set precisely considering their rheological properties. As the rheological behaviour of uncured adhesives is mostly independent of their properties in the cured state, the standard can also serve for the examination of non-structural adhesives

Ämnesområden: Lim
Kommittébeteckning: SIS/TK 162 (Lim och limningsteknik)
Källa: ISO
Svarsdatum: den 4 sep 2019
Se merSe mindre
 

This International Standard specifies characteristics for adhesives for floor coverings, which comprise

— resilient floor coverings (e. g. manufactured from plastics, linoleum or rubber);

— textile floor coverings.

Adhesives for floor coverings are intended for use within a building according to the manufacturer’s specification.

This International Standard specifies requirements for establishing performance characteristics of adhesives for floor coverings with regard to their determination, evaluation and expression.

This International Standard comprises all kinds of adhesives for floor coverings irrespective of the chemical composition and the mechanism of setting. Products according to this standard can be put on the market as liquids, pastes and film adhesives for floor coverings. The products may be one-component or multi-component.

This International Standard also defines a special kind of adhesives for floor coverings, which facilitate the easy removal of the floor covering after the utilization and where the need for a permanent bond is not always required. These types of floor covering adhesives will be referred as low peel strength, release bond adhesives.

This International Standard does not

— cover adhesives for bonding parquet to the subfloor, adhesives for bonding laminate floor coverings and adhesives for ceramic tiles;

— make provisions for testing the bond strength of low peel strength, release bond adhesives for floor coverings;

— take account of all influences which may occur in practice.

Ämnesområden: Lim
Kommittébeteckning: SIS/TK 162 (Lim och limningsteknik)
Källa: CEN
Svarsdatum: den 17 okt 2019
Se merSe mindre
 

This European standard specifies test methods for determination of the suitability of two component epoxy and polyurethane adhesives for on-site repair of cracked timber structures. The standard specifies minimum requirements on bond strength and integrity. The standard provides minimum on-site repair provisions and specifies test and minimum strength requirements with drill cores from on-site repaired timber structures for verification of bond strength and integrity.