Technical!
General information on NM’s data specifications
The respective products’ technical data are based on the following:
» Mixing ratios are specified in parts by weight.
» The data indicates approximate values, attained for each product with appropriate conditioning times and temperatures.
» Viscosity is measured at +25°C; other values at +20°C if not otherwise indicated.
» Chemical resistence meassured by completely immersed sample in the respective fluids at 20°C
In regards to shelf life, normally stored products shall be used within one year. Epoxy resins can crystallise even at normal temperatures and must then be heated to about +50°C prior before use.
Epoxy products that are exposed to UV light will yellow, more or less. Color changes may occur.
We retain the right to alter both products and data.
We cannot take responsibility for application areas of which we are not knowledgeable.
The user shall assess the products for his or her particular field of application; we only guarantee the material properties.
Please feel free to contact us so that we can help in resolving any problems you may encounter.
Since our standard colours are older than such the NCS®©-systemet, the translation is only approximate.
NM colour 14 NCS 3010 Y10R RAL 7031 |
NM colour 15 NCS 4030 G10Y RAL 6011 |
NM colour 16 NCS 5040 G10Y RAL 7031 |
NM colour 17 NCS 2502 B RAL 7040 |
NM colour 18 NCS 4502 B RAL 7001 |
NM colour 19 NCS 5040 Y90R RAL 3009 |
NM colour 20 NCS 2060 Y20R RAL 1034 |
NM colour 37 NCS 1040 B10G RAL - |
| NM colour 24 Black |
NM colour 27 White |
The translation from our standard colours into NCS®©- and RAL-koden is only approximate.
Thanks to expanded laboratory resources, we can now produce virtually any color with relatively short delivery time. After we receive information about wanted color from a color map or obtain a color sample, we can say how close we are to your request, any additional costs and delivery time.
We have today more than 400 different colors recipes, which are properly tested.
In addition to our range shown by the data sheets, we also manufacture a lot of taylor made products.
Please contact us and we will be more than happy to help you to solve your problem.
Glossary
Potlife
Potlife is a way of specifying a hard plastic’s reactivity. Normally, it indicates the time required for a resin-hardener mixture of 100 grams to increase the temperature from +20°C to +50°C. For slow systems, the time is indicated that is needed for the viscosity to double. If larger amounts are mixed, the potlife is shorter because of the heat released during the reaction.
Hardening time
Hardening time is the time that passes until no improvement in strength can be measured. This normally occurs after 7 days at room temperature. By raising the temperature to +30°C, the hardening time is halved.
Primer
Primer is the first layer that is applied to a surface. Another term used is priming.
A primer is intended to provide good wetting and adhesion for subsequent coats. On absorbent substrates, the primer also prevents the intake of succeeding coats.
Carbonatisation
During the time that an amine-epoxy mixture is hardening, the surface is exposed to the carbon dioxide that is present in air. The free amines then form a compound that is called amine carbonate. The thin film of amine carbonate is usually invisible to the naked eye, but if it is present, adhesion to the following coat is degraded.
For this reason, sanding between coats is recommended. Working "wet-on-wet" seldom entails any problems.
Dew point
Air at a specific temperature can dissolve a certain amount of water vapour. This amount is called the air’s vapour concentration at saturation point. At +20°C, air can dissolve 17.28 grams of water vapour per m³. The relative atmospheric humidity is then equal to 100%. If the atmospheric humidity is 60%, it thus contains 10.37 grams of water per m³. The colder the air, the less water vapour can be retained. When warm air with a certain amount of water vapour is cooled, the air’s vapour concentration at saturation point will be reached and further reduction of the temperature leads to water being released from the air, i.e. dew.
Exothermic
When heat is released during a chemical reaction, the reaction is said to be exothermic. The opposite is when heat must be applied; this reaction is referred to as endothermic.
HDT
HDT is the abbreviation for Heat Deflection Temperature. HDT is the temperature at which a plastic’s physical properties are degraded.
Thixotropic
Thixotropic is an indication of a special consistency of a liquid. When not agitated, the consistency is nearly solid, but becomes liquid under agitation.