Shanghai Daoqin Plastics Co., Ltd.

 1, brief introduction

nylon 66 also 称锦纶66, polyamide (PA) -66, poly already hexamethylenediamine

nylon 66 structure 式

features:

• resistant force cracking property good

• wear resistance most good polyamide (PA)

• heat resistant property good, self-extinguishing property material

• 自 lubricated property good, 仅次于 PTFE and polyoxymethylene (POM)

• oil resistant property 极佳, can solvent 于苯酚 and acid

• machine strong/high degree high, chemical stability property good

• add carbon can improve/increase its weather resistance

molding technology: large has 88% nylon 66 through injection molding processing formed various made parts, 约12% nylon 66 则 through extrusion, blow molding and other molding processing formed versus products.

drying 处理: if processing front material is 密封, that 么就没 has necessary drying. if container by 打开, that 么建议 in 85C hot gas in drying 处理. if wet degree large 于0.2%, also need 进行105C, 12 small true drying.

熔化 temperature degree: 260~290C. for additives product is 275~280C. temperature degree 应避免 high 于300C.

mold temperature degree: 建议80C.

injection pressure: usually in 750~1250bar, 取决于材 material and product design.

injection speed degree: high speed （ for/regarding reinforcement type material low 一 ）.

runner and gate: due to PA66 solid time very short, therefore gate non important. gate 孔径不 need small 于0.5*t（ this 里t is parts thick degree ）. if use hot runner, gate dimensions ratio use runner small 一, is hot runner can 够帮助 retardant material solid. if use 潜入式 gate, gate most small 直径应当 is 0.75mm.

4, nylon 66 industry chain

DuPont company separation nylon 66 Model/Grade and features

PA6 and PA66 difference, its chemical material features versus 似, 但PA6 melting point relatively low, but also process temperature degree scope/range very wide, impact resistant property and resistant solvent understanding property more strong/high. 而阿斯顿马丁 for sheet/plate material requirements standards is PA6. lower 面我们 comparison lower PA6 and PA66 difference:

PA6 chemical material features and PA66 very versus 似, however, it melting point relatively low, but also process temperature degree scope/range very wide. it impact resistant property and resistant solvent understanding property ratio PA66 need good,但吸 wet property more strong/high. is parts many quality features need to wet property effect/influence, therefore use PA6 design product need separation to this 一点. is improve/increase PA6 machine features, add various modifier. 玻璃就 is most Common additives, has is high impact resistance property also add combined formed 橡胶, 如EPDM and SBR and other.

due to nylon 66 excellent heat resistant property, chemical resistant product property, strong/high degree and processing and other, in automotive industrial to a large amount of application, currently already can used for automotive has 部位, 如发动 machine 部位, electrical appliances and 车体部位.