blazas rašė:
GAdas rašė:
Medis suvaikščiojo ir atlupo fibrą, nes metalo su fibra sukibimas yra kur kas silpnesnis nei medienos su fibra; plius rankenos mediena yra gumbas, - pluoštas neina lygiai, todėl įgerdamas drėgmę ir ją atiduodamas netolygiai prisiglaudžia.
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Argi stabilizuotas medis irgi "vaikšto"?Klausimas-kam tada jį stabilizuojama?Ar stabilizacija čia kažkokia ne visai teisinga,ar dar yra kokie niuansai
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Teoriškai taip, praktiškai tai priklauso nuo proceso ir naudojamų medžiagų - pramoniniu būdu stabilizuota mediena tikrai neturėtų vaikščioti, o namudiniu tai visko gali būti... Bet tai vėlgi priklauso nuo to gamintojo - vienas procese naudoja išmirkymą tirpikliuose prieš pagrindinį "murkdymą" į polisesterinę dervą, kitas, tiesiog naudoja skiestą epoksidinę dervą, trečias naudoja metilakrilato dervą ir slėgį; bet neaišku kuris yra pakankamai "didelis" ar protingas, kad galėtų sau leisti kokybės patikrą (QC) arba produkto testavimo eksperimentus.
T.y. aš bent asmeniškai neesu matęs jokio stabilizuotos medienos sertifikato, kad ji atitiktų kažkokį (ISO, ASTM, BS, DIN) standartą.
O jų, patikėk yra sočiai:
ISO 18280:2010(en) Plastics — Epoxy resins — Test methods
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 apparent viscosity by the Brookfield Test method
ISO 2592, Determination of flash and fire points — Cleveland open cup method
ISO 3001, Plastics — Epoxy compounds — Determination of epoxy equivalent
ISO 3146:2000, Plastics — Determination of melting behaviour (melting temperature or melting range) of semi-crystalline polymers by capillary tube and polarizing-microscope methods
ISO 3219, Plastics — Polymers/resins in the liquid state or as emulsions or dispersions — Determination of viscosity using a rotational viscometer with defined shear rate
ISO 3251, Paints, varnishes and plastics — Determination of non-volatile-matter content
ISO 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 chlorine content
ISO 4625-1, Binders for paints and varnishes — Determination of softening point — Part 1: Ring-and-ball method
ISO 4630-1, Clear liquids — Estimation of colour by the Gardner colour scale — Part 1: Visual method
ISO 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 acid anhydride
ISO 9702, Plastics — Amine epoxide hardeners — Determination of primary, secondary and tertiary amine group nitrogen content
ISO 11357-3, Plastics — Differential scanning calorimetry (DSC) — Part 3: Determination of temperature and enthalpy of melting and crystallization
ISO 12058-1, Plastics — Determination of viscosity using a falling-ball viscometer — Part 1: Inclined-tube method
ISO 21048, Plastics — Epoxy resins — Determination of 1,2-glycol content
ISO 21318, Plastics — Epoxy resins — Determination of electrical conductivity of aqueous resin extracts
ISO 21627-1, Plastics — Epoxy resins — Determination of chlorine content — Part 1. Inorganic chlorine
ISO 21627-2, Plastics — Epoxy resins — Determination of chlorine content — Part 2: Easily saponifiable chlorine
ISO 21627-3, Plastics — Epoxy resins — Determination of chlorine content — Part 3: Total chlorine
https://link.springer.com/article/10.10 ... 015-0017-5