Shanghai Daoqin Plastics Co., Ltd.

  polyphenylene oxide (PPO) （PPO）

1957 year: polyphenylene oxide (PPO) USA general purpose electrical appliances company using/adopting oxidation combined methods combined formed;

1964 year: USA general purpose electrical company use 2,6-二甲基苯酚 is raw materials achieve polyphenylene oxide (PPO) industrial production.

1966 year, general purpose electrical company also production modified polyphenylene oxide (PPO) （MPPO）. 1984 year, world polyphenylene oxide (PPO) amount is 163kt.

2010 year and 2015 year polyphenylene oxide (PPO) amount will separation to 8 10,000 tons and 12 10,000 tons,

modified PPO(MPPO) comprehensive property can good, formed is large general purpose engineering plastics 之一.

polyphenylene oxide (PPO) （PPO） generally 呈土黄 color powder 末状.

polyphenylene oxide (PPO) most large features :

1, in long negative lower, dimensional stability excellent and electrical insulation property;

2, use temperature degree scope/range 广, can in －127～121℃ scope/range inner long use;

3, excellent resistant water, resistant property can （Tg is 210℃, heat deflection temperature (HDT) is 190℃）;

4, products tool has relatively high tensile strength and impact resistant strong/high degree;

5, relatively good resistant creep property, wear resistance and electrical property can.

6, melt flow property 差, processing difficult.

main/primary applications:

1, 代替不锈钢 manufacturing outer medical devices.

2, machine electrical industrial in can made as gears, machine sheet/slice, pipeline, 阀门, and other solid parts and parts and other

3, used for made as electronics, electrical industrial in parts, ring framework and printing electrical sheet/plate and other.

1）MPPO density small, dimensional stability good, easy processing , heat deflection temperature (HDT) in 90 ~ 175℃, suitable manufacturing office equipment, use electrical appliances, machine 箱体, and precision parts and other.

2）MPPO dielectric constant and loss consumption positive in large general purpose engineering plastics in most low, insulation property most good, heat resistant property good, temperature degree and 周波数 effect/influence, suitable for electrical industrial. made function in wet has conditions lower electrical insulation parts, ring framework, tube/pipe base/seat, control 轴, pressure device sleeve/set, electrical appliances box/case, insulation and other.

3）MPPO resistant water and heat resistant water property good, suitable for manufacturing water table/sheet, water 泵. textile use tube/pipe resistant 蒸煮, use MPPO made tube/pipe use lifespan long.

4）锂离子 battery market large has development outlook/prospects, most outer development 出 MPPO锂离子 battery use has machine electrical understanding liquid packaging materials property can excellent use ABS or PC,

5）MPPO made as automotive table/sheet 盘, anti and other, PPO and PA alloy, especially is high resistant impact property can specifications product types used for outer parts development comparison fast.

6）MPPO can use manufacturing corrosion resistant equipment, its hydrolysis resistant property especially good, also resistant acid, alkali, resistant 芳香烃, 卤代烃, type and other property can 差, easy solvent or force cracking.

7） used for medical devices, can in hot water and machine mixed combined filler in 代替不锈钢 and other metal.

1． mono 体二甲酚 combined formed

it can from in separation to, easy to high pure mono 体.

2,6-二甲酚 and alcohol in catalytic agent in lower 甲基化 reaction technology most is formed 熟.

2． polymerization reaction:

3． selection * features viscosity [η] is 0.5~0.55 PPO and PS or HIPS按7: 3

blending, meanwhile add amount stabilizer, increase agent, flame retardant, lubricant and other;

4． blending rear di screw extrusion machine pelletizing, temperature degree control in 240~280℃,

add 入25% short glass fiber (GF) again di screw extrusion machine pelletizing to glass fiber reinforced MPPO.

* features viscosity: high poly material solvent liquid concentrated degree relatively dilute 时, its versus for viscosity for value and high poly material solvent liquid quality concentrated degree ratio value is high poly material features viscosity. features viscosity (intrinsic viscosity) is high poly material solvent liquid concentrated degree 趋于零时 “ ratio concentrated viscosity ”(ηspc) or ratio concentrated for versus for viscosity (lnηrc), 即: limc→0 ηsp/c=Inηr/c=[η](1) .

1, polyphenylene oxide (PPO) is 无定形 polymer, in melt lower property 接近*牛顿流体, due to polyphenylene oxide (PPO) melt viscosity large, therefore processing 时应该 improve/increase temperature degree and injection pressure high melt flow can force.

2, polyphenylene oxide (PPO) separation rigid property large, 玻璃化转变 temperature degree high, easy crystallization and orientation, therefore products inner internal stress high, molding rear 应该予以消 remove.

3, polyphenylene oxide (PPO) water absorption very low, micro amount water separation in high temperature lower for its chemical structure 不产生 effect/influence, is anti products surface silver streaks and bubbles, therefore in 130℃ drying 3~4h.

4, polyphenylene oxide (PPO) is 无定形 polymer, molding shrinkage small.

5, polyphenylene oxide (PPO) waste material can heavy use.

*牛顿流体: is in force rear easy deformation, 且切应 force and deformation speed rate formed positive ratio low viscous property 流体.