BS ISO 18280:2010 pdf free download Plastics — Epoxy resins — Test methods
Epoxy resins are a family of synthetic resins,including products,which range from viscous liquids to high-melting solids. The resin molecule contains as reactive sites one or more oxirane or epoxy groups, usually inthe form of a glycidyl group.The most commercially important resin is the glycidyi ether of bisphenol A,produced by the condensation of epichlorohydrin and diphenylpropane (bisphenol A). Epoxy resins withdifferent characteristics are also produced commercially by reacting epichlorohydrin with other materials. Tobe of use, the resins must be crosslinked with a curing agent or hardener. The choice of curing agent is ofimportance in designing an epoxy resin system for a given application. The major reactive groups in the resin,the epoxy and the hydroxyl groups, react with many other groups so that many types of chemical substancecan be used as curing agents. These include acid anhydrides,aliphatic and aromatic amines andpolyaminoamides. Some curing agents will crosslink the resin at ambient temperatures while others requirethe application of heat.
This International Standard provides an overview of the ISO test methods used to characterize epoxy resins.The listed property to be determined in any given case depends on agreement between the supplier andcustomer.
2Normative references
The following referenced documents are indispensable for the application of this document.For datedreferences,only the edition cited applies. For undated references,the latest edition of the referenceddocument (including any amendments) applies.
ISO 1523,Determination of flash point — Closed cup equilibrium method
ISO 1675,Plastics — Liquid resins — Determination of density by the pyknometer method
ISO 2555,Plastics — Resins in the liquid state or as emulsions or dispersions —Determination of apparentviscosity by the Brookfield Test method
ISO 2592,Determination of flash and fire points — Cleveland open cup methodISO 3001,Plastics — Epoxy compounds – Determination of epoxy equivalent
ISO 3146:2000,Plastics — Determination of melting behaviour (melting temperature or melting range) ofsemi-crystalline polymers by capillary tube and polarizing-microscope methods
ISO 3219,Plastics — Polymers/resins in the liquid state or as emulsions or dispersions —Determination ofviscosity using a rotational viscometer with defined shear rate
ISO 3251,Paints, varnishes and plastics — Determination of non-volatile-matter contentISO 3451-1:2008,Plastics – Determination of ash —Part 1 : General methods
ISO 3521, Plastics —Unsaturated polyester and epoxy resins —Determination of overall volume shrinkage
ISO 3675,Crude petroleum and liquid petroleum products — Laboratory determination of density —Hydrometer method
ISO 4615:1979,Plastics — Unsaturated polyesters and epoxide resins —Determination of total chlorinecontent
ISO 4625-1,Binders for paints and varnishes — Determination of softening point— Part 1: Ring-and-ballmethod
ISO 4630-1, Clear liquids —Estimation of colour by the Gardner colour scale— Part 1: Visual methodISO 4895,Plastics — Liquid epoxy resins — Determination of tendency to crystallize
ISO 5661,Petroleum products — Hydrocarbon liquids —Determination of refractive index
ISO 6271-1, Clear liquids —Estimation of colour by the platinum-cobalt scale— Part 1 : Visual method
ISo 7327,Plastics —Hardeners and accelerators for epoxide resins — Determination of free acid in acidanhydride
ISO 9702,Plastics —Amine epoxide hardeners —Determination of primary, secondary and tertiary aminegroup nitrogen content
ISO 11357-3,Plastics —Differential scanning calorimetry (DSC)— Part 3: Determination of temperature andenthalpy of melting and crystallization
ISO 12058-1,Plastics —Determination of viscosity using a falling-ball viscometer— Part 1: lnclined-tubemethod
ISO 21048,Plastics — Epoxy resins -Determination of 1,2-glycol content
ISo21318,Plastics —Epoxy resins —Determination of electrical conductivity of aqueous resin extractsISO 21627-1, Plastics — Epoxy resins —Determination of chlorine content — Part 1. Ilnorganic chlorine
ISO21627-2,Plastics — Epoxy resins — Determination of chlorine content— Part 2: Easily saponifiablechlorine
ISO 21627-3,Plastics — Epoxy resins —Determination of chlorine content — Part 3: Total chlorine
3Description of test methods
3.1Physical properties
3.1.1 Determination of the melting range
3.1.1.1 Determination of the melting range using capillary methods
The test shall be performed in accordance with ISO 3146:2000,method A.