標準號：BS EN ISO 8130-5-2010
中文標準名稱：粉末涂料.粉末/空氣混合物流動特性的測定
英文標準名稱：Coating powders. Determination of flow properties of a powder/air mixture
標準類型：G51
發布日期：1993/4/15 12:00:00
實施日期：1993/4/15 12:00:00
中國標準分類號：G51
國際標準分類號：87.040
適用范圍：This part of ISO 8130 specifies a method fordetermining the flow properties of a mixture ofcoating powder and air. The method reflectscommercial practice in powder spraying(see “Bibliography”, Annex B).The results obtained are influenced by thecomposition of the coating powder, its density,particle size distribution and particle shape,together with the tendency of the particles toagglomerate and to accept a triboelectric charge.NOTE 1 It is well known that the transport and sprayingcharacteristics of powders are highly dependent on their flowproperties in bulk and in air. The procedure described in thismethod is considered to be more meaningful than the “flow angle”approach sometimes used to evaluate bulk flow properties. In thelatter, the angle of the cone formed when a powder is allowed toflow through a vertical funnel on to a horizontal surface ismeasured. A given mass of powder with good flow propertiesforms a shallower cone than an equal mass of a powder withpoorer flow. The objections to the flow angle method are that it isdifficult to obtain a precise measurement and that the powder isused alone, whereas during application it is mixed with air.