Shanghai Daoqin Plastics Co., Ltd.

据 statistics, 2014 year inner nylon sheet/slice output/production volume ultra- 325 10,000 tons, nylon use amount in engineering plastics in 位居第一! nylon material due to high degree for and hydrogen and other 效应, tool has very high crystallization degree, from tool non excellent force property can. therefore, injection molding grade glass fiber reinforced nylon a large amount of used for automotive, electronics and other high industry.

however, nylon in add glass fiber (GF) and other reinforcement material 时, melt flow index small, difficult injection molding processing; this for nylon products dimensional stability and surface generate very large effect/influence!

图: plastics made parts in “ fiber exposure ” phenomenon, nylon engineering plastics technology micro forum

how to can reduce nylon injection molding processing difficult degree? 威海晨源 separation new material has company R&D production 出第四代 new type polymer/macromolecule material —树枝状 polymer. polymer is types flow improvement agent, it can formed increase nylon MFI, also can force property can reduce.

20世纪80 year 代初, 树枝状 polymer USA chemical 家Tomalia DA博士发明并 formed combined formed. 近10 more year, 树枝状 polymer due to above features, in material field/area to very more application, nano grade material device, nano grade catalytic agent and other. its 实树枝状 polymer in polymer/macromolecule material processing also has more vast application, ratio 如: reduce melt viscosity, improvement flow property, improve/increase filler dispersion property, 利于吹 film and other.

is what 说树枝状 polymer can improvement nylon processing flow property? 我们 举 例子: has 两份平均 molecular weight same property polymer （称 is A） and 树枝状 polymer （称 is B）, lower 图 示:

图: property polymer A and 树枝状 polymer B

1.首先 comparison it flow property can: A due to is property, very easy 缠结, easy crystallization; B is 树枝状, tool has high degree structure （主链 short, more ）, due to 空间位 retardant function, separation 子间缠结 relatively less, tool has low melt viscosity features.

2. its is force property can : 树枝状 polymer surface a large amount of can make its tool very good function, ensure tool has relatively large separation force, from maintain very good material force property can.

lower 面我们 through table/sheet 格 说明 in di screw extrusion pelletizing process in, add different Model/Grade 树枝状 polymer belt/tape machine pressure, machine electrical 流, nylon force property can 变化程 degree, and melt flow index improve/increase degree:

formulation : 1 is PA66, 2 is 75%PA66 +25%GF, 3 is 70%PA66 +30%GF

如 upper table/sheet 示: add a small amount of 701 series 树枝状 polymer, extrusion machine machine pressure decrease small 25-40%, machine electrical decrease small 10% above, for extrusion machine requirements large degree reduce. tensile strength decrease small 5-18%, is MFI increase degree non large, to 94-570%, from large large its injection molding processing! another, 801 series 树枝状 polymer loss plastics force property can, but also can improves pure PA66 MFI , need according to demand selection combined Model/Grade 树枝状 polymer.

当然, 树枝状 polymer not only can improve/increase plastics MFI, it also less has below/following types function:

1. plastics toughened modified: 树枝状 polymer structure toughening agent tool has excellent flow property and dispersion property, especially combined high filling and high toughened system, can decrease/reduce toughening agent use amount from to reduce cost function, 树枝状 toughening agent substitute/replace 传统POE应 used for PP system 时, can ratio and other 份数POE improves 40%~60% above impact strong/high degree.

2. application in transparent property plastics and film field/area : versus for/regarding polymer/macromolecule material, 树枝状 polymer 玻璃化 temperature degree more low, more easy formed film, easy crystallization, combined transparent property plastics and film field/area application, can substitute/replace fluorine polymer PPA application in PE film field/area.

图: PE film

3. function 化: 树枝状 polymer surface a large amount of can make its can tool very high chemical active property, can through modified obtain more more function property 基团, 树枝状 polymer through surface a large amount of different can can achieve in different plastics and product types in application.

图: Shanghai large chemical chemical industry 学院朱 new long （ left ） and 威海晨源 separation new material has company 李武松 general manager （北 large 博士）

about/regarding separation 子(CYD)

威海晨源 separation new material has company is 亚洲首家 R&D, production 树枝状 polymer material high new technology type enterprise, has 树枝状 polymer field/area 唯一院士工 as 站, core in 树枝状 polymer R&D and application areas tool has 20 more experience 积累.

晨源 separation 子(CYD) in is large 学, large 学, in provide 树枝状 polymer used for 科学实验之 rear, already achieve 树枝状 polymer industry 化! 至今, already to large 利亚, USA and Europe and other full 球各 订 mono, widely used in plastics, coating material ink, material medical grade, nano material, catalytic agent 载体, water and other field/area.