Shanghai Daoqin Plastics Co., Ltd.

AS（SAN） resin brief introduction

Scientific Names acrylonitrile - styrene copolymer （acrylonitrile-styrene copolymer).英文 shrink is SAN or AS,也称 is SAN resin or AS resin. acrylonitrile and styrene copolymer formed polymer/macromolecule combined material. generally styrene 15%-50%.

AS（SAN） is acrylonitrile and styrene through method, method or emulsion method made. transparent or semi transparent water white pellets. transparent degree high, generally has shallow color and shallow color types color. versus for density 1．06-1．08g/cm3, rate 1．57, balanced water property 0．66%, heat deflection temperature (HDT) 82-105℃.

AS property can

advantages:

AS tool has high gloss, high transparency, high impact, easy color, tool has excellent heat resistant property and resistant solvent agent property. rigid property large, elastic property modulus is has thermoplastic property plastics in relatively high types. tool has relatively high chemical stability property, resistant water, oil resistant, resistant acid, resistant alkali, resistant alcohol type. weather resistance in and other.

SAN（AS） ratio polystyrene (PS) （PS） has more high impact strong/high degree and excellent heat resistant property, oil resistant property, chemical resistant property. it can very good resistant certain make polystyrene (PS) force cracking type.

disadvantages:

solvent ketone type solvent agent and certain 芳烃, chlorine 代烃, property relatively large. 　

material property can 　　

SAN（AS） tool has very strong/high 承受载荷 can force, resistant chemical reaction can force, resistant hot deformation features and stability property. SAN(AS) in add glass fiber additives can increase strong/high degree and resistant hot deformation can force, decrease small thermal expansion coefficient. SAN（AS） Vicat softening temperature is 110℃. lower deformation temperature degree is 100℃. SAN（AS） shrinkage rate is 0.3-0.7%. SAN（AS） is types hard, transparent material. styrene formed make SAN(AS)坚 hard, transparent easy processing; acrylonitrile formed make SAN（AS） tool has chemical stability property and heat stabilized property. 　

injection molding process 　　

AS processing temperature degree generally in 200-250℃ is 宜. material easy wet, processing front drying small above, its flow property ratio PS稍差一点, injection pressure high 一. drying if 储存不适当, SAN（AS） has 一 吸 wet features. drying conditions is 80℃, 2-4 small 时. 　　

熔化 temperature degree 200-270℃. if processing thick products, can use low lower 限 熔化 temperature degree. 　　

mold temperature degree 40-80℃. for/regarding reinforcement type material, mold temperature degree need ultra- 60℃. cooling system must very good design, is mold temperature degree will effect/influence products appearance, shrinkage rate and bending. 　　

injection pressure 350-1300bar

injection speed degree use high speed injection 　　

runner and gate has gate can use. gate dimensions must very 恰当, 以避免 generate strip/profile 纹, and 空隙.

AS resin processing precautions

1） drying full （ moisture content 0.1% below/following ）: 80～90℃, 2～3 small 时

2）避免 injection shot machine inner long time 滞留

3）勿 high temperature injection shot

4）回 material add amount （﹤20%）

5）避免残留应 force

injection molding Common issues 　　

溢 material flash, bubbles, shrink 痕, 熔接痕, and 黑纹, silver streaks and 斑纹, surface 划痕, surface and 花纹, 烧焦变 color and 杂质, 烧黑, gloss defect, crazing 泛白, color 不均, low, delamination 剥离, warpage deformation, demolding defect, mold heavy 腐蚀. 　

application scope 　　

1.家 use electrical appliances 方面包括空调 machine parts, electrical sheet/slice, electrical machine front sheet/plate, machine and machine base/seat, 立体声播音 machine anti 尘罩, machine and drying machine table/sheet 盘, machine water frame and other.

2. automotive parts 方面包括蓄 battery, lamp covers, table/sheet 盘, 驾驶盘, 油 滤 device, 玻璃边 frame and inner decoration and other.

3.家 use device tool 方面包括餐 tool, 杯, 盘, box/case, bottle, use tool, and 衣刷柄, device, 衣服挂勾, table/sheet 盘, device parts, toys, versus machine machine 身, dark box/case, 冰箱蔬菜 and water 果盘子, food machine and machine parts, magnetic belt/tape box/case, magnetic belt/tape and 刮脸刀架, box/case and other.

4. industrial products 方面包括 various electrical appliances, table/sheet 盘, 油清洗 device, machine 械污垢检验 table/sheet cover/cap, device, 滤斗, and tool, 笔杆, 计算尺, machine parts, use machine parts, electrical parts, box/case and other.

5.也 can formed Monofilament, main/primary used as production ABS resin mixed material.

AS manufacturing and its related product Model/Grade property can and application

Chi Mei AS color and application

1.PN-117C  PN-117  PN-127  PN-127H this material flow property can grade decrease.

PN-117 PN-127 according to color different separation is types product grade

PN-117L100 (自然 color)黄                   PN-127L100(自然 color)黄

PN-117L200 淡蓝 color)                     PN-127L150 淡蓝 color

PN-117L250 蓝 color                         PN-127L200 蓝 color

2. several AS product features and application

PN-117C color is high transparent color （ water color ）, flow property good, combined 做化妆 product box/case, food container, large type transparent material parts.

PN-117 strong/high degree and mechanical properties ratio PN-117C excellent 秀, can used for product box/case, automotive use parts, 原子笔 outer housing/shell, 家庭五金 transparent material.

PN-127 tool has heat resistant property good, mechanical properties excellent, combined high strength requirements product, 例如: water device use 滤心罐 outer housing/shell, automotive electrical bottle, 果菜榨汁 machine use container.

PN-127H heat resistant property, chemical resistance, mechanical properties excellent, type used for one-time property machine, another also can as electrical 风扇叶 sheet/slice.

PN-107 无 color transparent its chemical resistance excellent and PMMA, MS, and PS. used for product outer box/case, food container, electrical appliances sheet/plate, use tool. currently competition for is LG 82TR