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hot solid property BMC plastics features, 你都知道吗?
BMC模 plastics 团状模 plastics tool has excellent electrical properties, mechanical properties, heat resistant property, chemical resistant property, also various molding process, can meet/satisfy various product for property can requirements, therefore 越 越受 to large use 户 喜爱.
团状模 plastics (BMC模 plastics) is types hot solid property plastics, its in mixed combined various inert property filler, fiber reinforcement material, catalytic agent, stabilizer and material, formed types used for compression molding or injection molding viscous “油灰状” composite/compounding material. 团状模 plastics (BMC模 plastics) through short fiber high degree filling and reinforcement, glass fiber reinforcement material 占10%至30%, long degree usually in 1/32英寸至1/2英寸(12.5mm) between.
according to different most application areas, made composite/compounding material can control dimensions, flame retardant property and resistant electrical property good, tool has very high electrical strong/high degree, corrosion resistant property and resistant property, mechanical properties 卓越, shrinkage property low color stability. 团状模 plastics (BMC模 plastics) flow features and insulation and flame retardant property good, for/regarding fine and dimensions requirements various application non suitable. material has 75 types color can selection, can powder agent spray coating or water property coating material.
property 质: short glass fiber and saturated and polyester material mixed combined formed 团状预浸 material. using/adopting pressure, 传递模塑, injection molding and other process molding, made products mechanical properties good, dimensional stability high, surface light degree good, resistant water, oil resistant, resistant property excellent 良, heat resistant, electrical property can excellent 良, especially is resistant electrical property can to 190s left right. formulation formed resin material, main/primary formed separation sheet/slice plastics, filler increase more, generally use increase agent, again will resin material and short glass fiber (long degree 约3~25mm)充 separation mixed combined made. main/primary used for electrical appliances, electrical machine, electrical, table/sheet, machine manufacturing, chemical industry equipment, construction, 交通运输, national defense and other 部门.
⒈ generally property can: BMC模 plastics (DMC) specific gravity relatively large, in 1.3-2.1 between; products appearance light 亮, good, has hard thick heavy 感觉; use add hot generate very more 油烟, has styrene odor; certain product types BMC模 plastics (DMC) flame resistant, certain product types also easy 燃烧, rear lower machine material 质.
2. dimensional stability: BMC模 plastics (DMC) 线膨胀系数 is (1.3-3.5)×10-5K-1, ratio generally thermoplastic property plastics small, make BMC模 plastics (DMC) tool has very high dimensional stability and dimensions degree. temperature degree for BMC模 plastics (DMC) dimensional stability effect/influence very small, wet degree effect/influence relatively heavy, BMC模 plastics wet rear 会膨胀. BMC模 plastics (DMC) 线膨胀系数 and 钢, aluminum very 接近, therefore can and its composite/compounding.
⒊ machine strong/high degree: BMC模 plastics (DMC) tensile, bending, impact strong/high degree and other property can high thermoplastic property plastics, resistant creep ratio thermoplastic property plastics good.
⒋ resistant water and solvent agent property: BMC模 plastics (DMC) for water, alcohol, 脂肪烃, 油脂, tool has good corrosion resistant property, is resistant ketone, chlorine carbon hydrogen combined material, 芳香烃, acid alkali and other. BMC模 plastics (DMC) water absorption low, 浸泡一天 rear insulation property can still very good.
⒌ heat resistant property: BMC模 plastics (DMC) heat resistant property ratio generally engineering plastics need good, heat deflection temperature (HDT) HDT is 200-280℃, can long in 130℃ temperature degree lower use.
⒍ resistant aging property: BMC模 plastics (DMC) resistant aging property can very good, in inner can use 15-20 year, outer 暴晒10 year rear its strong/high degree maintain rate in 60% above.
⒎ electrical property can: BMC模 plastics (DMC) resistant electrical property most 突出, can to 190秒 left right.
⒏ low gas property: BMC模 plastics (DMC) using/adopting styrene crosslinked agent in solid rear still has 0.1% 残留, add hot 时会发出臭味. therefore used for food device tool (如 micro 波炉餐 tool) BMC模 plastics (DMC)应 selection 无残留 styrene mono type UP resin.
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