Isang Paunang Salita
ISO (International Organization para sa Standardisasyon) ay isang pandaigdigang alyansa ng mga pambansang pamantayan katawan (Mga katawan ng miyembro ng ISO). Ang pagbuo ng mga internasyonal na pamantayan ay karaniwang isinasagawa sa pamamagitan ng ISO teknikal na komite. Ang bawat institusyon ng miyembro na interesado sa isang paksa kung saan ang isang teknikal na komite ay itinatag ay may karapatang kumatawan sa komite. Ang pamahalaan at mga di pampamahalaang internasyonal na organisasyon na nakikipag ugnayan sa mga organisasyon ng standardization ay kasangkot din sa gawaing ito. ISO ay gumagana nang malapit sa International Electrotechnical Commission (IEC) sa lahat ng bagay ng electrical standardization.

International standards are drafted according to the rules given in Part 2 ng Direktiba ng ISO / IEC.

Ang pangunahing tungkulin ng komite ng teknikal ay upang bumuo ng mga internasyonal na pamantayan. Draft international standards adopted by the Technical Committee will be circulated to member bodies for voting. Ang paglalathala bilang isang internasyonal na pamantayan ay nangangailangan ng pag apruba ng hindi bababa sa 75% ng mga miyembrong institusyon.

Mangyaring tandaan na ang ilang mga nilalaman ng dokumentong ito ay maaaring sumailalim sa mga karapatan sa patent. ISO ay hindi responsable para sa pagtukoy ng anumang o lahat ng naturang mga karapatan sa patent.

ISO 11998 was developed by Technical Committee ISO/TC 35, Mga pintura at barnis, Subcommittee SC 9, General test methods for paints and varnishes.

The second edition eliminates and replaces the technically revised first edition (ISO 11998:1998). The main changes are:

– The definitions of trip length and scrubbing cycle have been changed and a new term scrubbing length has been introduced;

— The coating dry film density determination method specified in Appendix A has been replaced by the new method.

ISO 11998-2006 “Determination of moisture-rub Resistance and cleanability of paint and varnish coatings”

Panimula
As stated in the introduction, this international standard is a revised version of ISO 11998:1998. The use and application of the standard has now been established worldwide and improved procedures/equipment have been proposed. The CEN/ISO Joint Working Group has approved the use of new grinding pads (different from those specified in 6.5) for inter-laboratory testing. The results of the tests are expected to be published by the end of 2006 and an early revision of the standard may begin.

1 Saklaw
The ability of the coating to withstand wear caused by repeated cleaning operations and to withstand the penetration of fouling agents is an important consideration from a practical point of view as well as from the point of view of comparing and rating such coatings. This standard describes an accelerated method for determining resistance to wet scrubbing. With regard to the cleanability of the paint, only the method itself is specified, not the fouling agent.

Note that since these properties depend not only on the quality of the coating, but also on the substrate, application method, drying conditions and other factors, the obtained results cannot be directly transferred to actual practice. Sa pamantayang ito, coatings are evaluated based on defined substrates, fixed application methods, specified drying conditions and defined wet scrubbing methods.

ISO 11998-2006 “Determination of moisture-rub Resistance and cleanability of paint and varnish coatings”

2 Mga reperensyang normatibo
The following references are required for the application of this document. Para sa mga petsang sanggunian, ang binanggit na bersyon lamang ang nalalapat. Para sa mga walang petsang sanggunian, ang bagong bersyon ng sanggunian (kasama ang anumang mga rebisyon) angkop.

ISO 1513, Mga pintura at barnis — Pagsusuri at paghahanda ng mga sample ng pagsubok

ISO 3270, Paints and varnishes and their raw materials – temperature and humidity regulated and tested

ISO 3696, analytical laboratory water use – specifications and test methods

ISO 15528, Mga Pintura, mga barnis at hilaw na materyales para sa mga pintura at barnis — Pag sampling

3 Mga tuntunin at kahulugan
Para sa mga layunin ng dokumentong ito, Ang mga sumusunod na termino at kahulugan ay nalalapat.

3.1 Cleanability

The dry coating can withstand the penetration of the fouling agent and be released from it by the cleaning process without removing more than the prescribed film thickness

3.2 Scrub cycle

A reciprocal movement of the scrub pad in both directions along the length of the scrub

3.3 Length of scrub

The stroke length plus the pad length

3.4 Trip Length

The distance traversed by the device in one stroke

3.5 Resistance to wet scrubbing

Ability of dry coated film to withstand a loss of less than the specified oil film thickness on average in the specified area when exposed to 200 wet scrubbing cycles

Tanging ang karaniwang bahagi ng impormasyon ay magagamit sa publiko. Upang makita ang buong nilalaman, Kakailanganin mong bilhin ang mga pamantayan sa pamamagitan ng mga pormal na channel.