panimula
ISO (International Organization para sa Standardisasyon) ay isang pandaigdigang pederasyon ng mga pambansang pamantayan ng 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 grupo ng miyembro na interesado sa isang paksa kung saan ang isang teknikal na komite ay itinatag ay may karapatang kumatawan sa Komite. Mga internasyonal na organisasyon, ang mga pamahalaan at mga non government organization na nakikipag ugnayan sa ISO ay kasangkot din sa gawaing ito. ISO ay gumagana nang malapit sa International Electrotechnical Commission (IEC) sa lahat ng bagay ng electrical standardization.

International pamantayan ay drafted alinsunod sa mga patakaran na ibinigay sa Bahagi 2 ng Direktiba ng ISO / IEC.

Ang pangunahing tungkulin ng komite ng teknikal ay upang bumuo ng mga internasyonal na pamantayan. Ang draft international standard na pinagtibay ng Technical Committee ay ipapakalat sa mga miyembro ng mga katawan para sa pagboto. Publication as an international standard requires approval by a vote of at least 75% of the member bodies.

ISO 18280-2010 “Plastic epoxy dagta test pamamaraan”

Mangyaring tandaan na ang ilang mga elemento ng dokumentong ito ay maaaring maging paksa ng mga karapatan sa patent. Ang ISO ay hindi mananagot para sa pagtukoy ng anuman o lahat ng naturang patente.

ISO 18280 was developed by Technical Committee ISO/TC 61, Mga plastik, Subcommittee SC 12, Thermosetting Materials.

Ang ikalawang edisyon ay kinakansela at pinalitan ang unang edisyon (ISO 18280:2005), which was revised to include the following additional test methods:

– Determination of softening point (tingnan sa 3.1.2);

– Determination of the content of 1, 2-glycol (tingnan sa 3.2.3);

– Determination of the conductivity of aqueous resin extracts (tingnan sa 3.2.4).

ipakilala ang
The purpose of this international standard is to outline the ISO test methods used to characterize epoxy resins. Appropriate and necessary test methods for the characterization of epoxy resins prior to polymerization are listed, along with a brief description of the principles involved.

ISO 18280-2010 “Plastic epoxy dagta test pamamaraan”

Due to the particularity of thermosetting resins such as epoxy resins, the performance of pre-crosslinking (useful characteristics for processing) and post-crosslinking (inherent characteristics) is different. ISO 3673-2 gives a procedure for determining the inherent properties of crosslinked (or cured) epoxy resins.

1 Saklaw ng Aplikasyon
Epoxy resins are a class of synthetic resins that include products ranging from viscous liquids to high melting point solids. Resin molecules contain one or more ethylene oxide or epoxy groups as reaction sites, usually in the form of glycidyl. The commercially important resin is the glycidyl ether of bisphenol A, made from the condensation of epichlorohydrin and diphenylpropane (bisphenol A). Epoxy resins with different properties can also be commercially produced by reacting epichlorohydrin with other materials. In order to be used, the resin needs to be cross-linked with a hardener or hardener. The choice of curing agent is very important in designing an epoxy resin system for a given application. The main reactive groups in the resin, the epoxy and hydroxyl groups, react with many other groups, so a variety of chemicals can be used as curing agents. These include anhydrides, aliphatic and aromatic amines, and polyamides. Some curing agents cross-link the resin at ambient temperatures, while others require heat.

This international standard Outlines ISO test methods for characterizing epoxy resins. The listed attributes to be determined in any given case depend on the agreement between the supplier and the customer.

ISO 18280-2010 “Plastic epoxy dagta test pamamaraan”

2 Normatibong mga dokumento ng sanggunian
Ang mga sumusunod na reference file ay kinakailangan para sa application ng dokumentong ito. Para sa mga petsang sanggunian, ang binanggit na bersyon lamang ang nalalapat. Para sa mga walang petsang pagbanggit, isang bagong bersyon ng referenced dokumento (kasama ang anumang mga rebisyon) angkop.

ISO 1523, Determination of flash point – closed cup equilibrium method

ISO 1675, Plastics-liquid resins – Determination of density by pycnometer method

ISO 2555, mga plastik na – liquid resins or emulsions or dispersions – Determination of apparent viscosity by the Brinell test method

ISO 2592, determination of flash point and ignition point – Cleveland open-cup method

ISO 3001, mga plastik na – epoxy compounds – determination of epoxy equivalent

ISO 3146:2000, Mga plastik – Determination of the melting behaviour of semi-crystalline polymers by capillary and polarizing microscopy (melting temperature or melting range)

ISO 3219, Mga plastik – polymers/resins in liquids or emulsions or dispersions – Determination of viscosity using a rotary viscometer with a specified shear rate

ISO 3251, Mga Pintura, varnishes and plastics – Determination of the content of non-volatile substances

ISO 18280-2010 “Plastic epoxy dagta test pamamaraan”

ISO 3451-1:2008, mga plastik na – Determination of ash – Bahagi 1: General method

ISO 3521, mga plastik na – unsaturated polyesters and epoxy resins – determination of total volume shrinkage

ISO 3675, crude oil and liquid petroleum products – Laboratory determination of density – hydrometer method

ISO 4615:1979 Mga plastik – unsaturated polyesters and epoxy resins – Determination of total chlorine content

ISO 4625-1 Adhesives for paints and varnishes – Determination of softening point – Bahagi 1: Global method

ISO 4630-1, transparent liquids – Estimation of colour by the Gardner colour scale – Bahagi 1: visual method

ISO 18280-2010 “Plastic epoxy dagta test pamamaraan”

ISO 4895, mga plastik na – liquid epoxy resins – determination of crystallization tendency

ISO 5661, petroleum products – hydrocarbon liquids – Determination of refractive index

ISO 6271-1, transparent liquids – Assessment of colour by the platinum-cobalt scale – Bahagi 1: visual method

ISO 7327, mga plastik na – hardeners and promoters of epoxy resins – Determination of free acids in anhydrides

ISO 9702, mga plastik na – amine epoxy hardeners – Determination of primary amine, secondary amine and tertiary amine nitrogen content

ISO 11357-3 Mga plastik – Differential scanning calorimetry (DSC) – Bahagi 3: Determination of melting and crystallization temperature and enthalpy

ISO 12058-1, mga plastik na – Determination of viscosity using a falling ball viscometer – Bahagi 1: inclined tube method

ISO 21048, Determination of plastic-epoxy resin-1, 2-ethylene glycol content

ISO 21318, mga plastik na – epoxy resins – Determination of electrical conductivity of water-based resin extracts

ISO 18280-2010 “Plastic epoxy dagta test pamamaraan”

ISO 21627-1, mga plastik na – epoxy resins – Determination of chlorine content – Bahagi 1. Inorganic chlorine

ISO 21627-2, mga plastik na – epoxy resins – Determination of chlorine content – Bahagi 2: easily saponifiable chlorine

ISO 21627-3, mga plastik na – epoxy resins – Determination of chlorine content – Bahagi 3: Total chlorine

ISO 18280-2010 “Plastic epoxy dagta test pamamaraan”

Ang standard information section lamang ang pampubliko. Upang makita ang buong nilalaman, kailangan mong bilhin ang pamantayan sa pamamagitan ng mga opisyal na channel.