мочевины формальдегидных смол, формальдегид мочевины литье

With the base material of UF or melamine-formaldehyde resin, the UF produced is powder UF processed by using various resins and stuffings and then adding additives according to different usages and requirements. They are suitable for hot-press molding and various products can be made of different UF through perfect pressing technique. With smooth appearance and bright color, wearable, self-extinguishing, non-toxic, arc-resistant, non-explosive, heat endurable, flame resistant and with little smoke, the products are widely applied in electronics, electric appliances, household utensils and machinery, especially in currently popular pressed tableware. Technical index of UFTwo main categories Four subcategoriesUF plasticMelamine plasticHousehold seriesElectric appliance seriesTableware seriesNon-explosive seriesItemUF1 P - A/HUF1 P - A1/HMF1 P - A 3 A 5/HMF4 P - C/HLiquidity mm142 152142 152413 153146 156Volatile%4.04.04.03.5 4.0Flexural Strength MPa80808070Impact strength(gap) KJ/m 2 min1.51.51.71.9hot deformation temperature °C min115115145145water absorption (cold water) mg max1001005050mould shrinkage (percent)0.60 1.000.60 1.000.50 1.000.20 1.00Dielectric strength MV/m min5.07.024h insulation resistance after 24h in water M Ω min10 510 4proof tracking index V min600600Arc resistance S min180Incandescence Resistance, grade11Appearance: the surface is smooth and bright, without air bubble or crack, and with bright color and luster after molded.Test condition: 1. Test shall be carried out at indoor temperature of 23±2(°C), or correct data can not be obtained. 2. The above index is in accordance with national standards, and some indexes can be enhanced as the user requires since our technical strength is strong.