Plastic and rubber(PA processing aids)
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CYD COMPANY
Please�mail�to�[email protected]�to�get�more�info�and�details.�
Tel:�86-631-5582881�
Add:�No.369-13,Industrial�District,Weihai�City,Shandong�Province,China,264205�
CYD Dendritic Polymers-Plastics and Rubber Additives
Polyamide (PA) Processing Aids
Product Description
Dendritic� polymers� as� "the� fourth� class� of� new� polymer� materials",� are�
attractive� to� the� scientific� world� and� industrial� circles.� The� novelty� of� these�
materials� includes� highly� branched� molecular� structure,� a� large� number� of�
surface� functional� groups,� void� space� in� molecules,� monodisperse� molecular�
weight�distribution�and�nanoscale�dimensions.�The�structural�characteristics�of�
dendritic�polymers� lead�to�unique�properties�such�as�excellent�solubility�and�
dispersion� properties,� low� melt� viscosity� and� solution� viscosity,� difficult� to�
crystallize�and�easy�to�form�film,�showing�unparalleled�nano�features.�
�
Dendritic�polymers�are�excellent�modifiers�for�polyamide�(PA)�because�of�the�
unique� structure� and� physicochemical� characteristics.� 1)� Improve� tensile�
strength,� flexural� strength,� impact� strength� and� rheological� properties�
(improve� melt� fluidity,� lower� plasticizing� temperature)� in� PA6� ; 2) Used� as�
compatilizer�for�PA6,�PP�or�other�nylon,�such�as�PA11,�PA1010�,�improve�both�
compatibility�and�mechanical�properties;�3)�Improve�dispersion�of�glass�fibers,�
carbon� fibers� and� various� inorganic� fillers� in� PA6;� 4)� Decrease� spinning�
temperature� of� nylon� to� reduce� thermal� degradation;� 5)� Endow� PA6� with�
excellent� low� temperature� toughness,� thereby� increase� performance� of� low�
temperature�resistance.�
�
Excellent performance of nylon system with dendritic polymers:
• Improve�mechanical�properties�of�PA6,�such�as�tensile�strength,�flexural�
strength,�impact�strength,�etc.;�
• Improve�flowability,�processability�of�PA6;�
CYD COMPANY
Please�mail�to�[email protected]�to�get�more�info�and�details.�
Tel:�86-631-5582881�
Add:�No.369-13,Industrial�District,Weihai�City,Shandong�Province,China,264205�
• Lower�processing�temperature�,�reduce�thermal�decomposition�of�PA6,�
decrease�energy�consumption,�save�cost;�
• Improve�the�low�temperature�resistance�performance�of�PA6;�
• Improve�compatibility�of�PA6�with�other�nylon�systems�or�other�resins�such�
as�PP;�
• Improve�dispersion�of�inorganic�fillers�such�as�glass�fiber�in�the�PA�system.�
�
Basic Physical Properties
No.� Test�Items� Unit� Index�
1� Appearance� ---� Viscous�liquid�or�solid�
2� Volatile� %�(w/w)� ≤ 2%�
3� Density� g/ml� 1.0~1.5�
PA6 performance improved by dendritic polymers--1
Preparation methods: The�premixed�material�of�dendritic�polymers�and�PA6�was�
dried� firstly� and� then� extruded� and� granulated� from� Twin-screw� extruder�
(screw� length-diameter� ratio� � L/D=30,� screw� diameter� ф =35mm),� heating�
temperature��section:�zone�1�100�℃,�zone�2�200�℃,�zone�3�227�℃,�zone�4�230�
℃,�zone�5�215�℃,�screw�speed�80r/min.�The�granulated�material�was�dried�in�
vacuum� drying� oven� at� 80℃� around� 12h,� and� then� injected� into� standard�
samples� from� M20-55� Injection� Machine(Maximum� injection� pressure�
1700kg/cm3)�for�test�of�stretch,�impact�and�bend,�the�mold�temperature�was�
room�temperature.�
�
In� PA6� systems,� 1.5%� dendritic� polymers� will� increase� the� tensile� strength�
from� 75.4MPa� to� 77.2MPa,� improved� by� 2.4%;� bending� strength� increased�
from� 139.5MPa� to� 146.3MPa,� enhanced� by� 4.9%;� bending� modulus� raised�
CYD COMPANY
from� 1901.0MPa� to� 1958.7MPa,� improved� by� 3.0%;� elongation� at� break,�
impact�strength�show�best�performance�when�dosage�was�1%,�enhanced�from�
168.8%,�33.9J/m�to�202.5%,�39.5J/m,�raised�19.96%�and�16.52%.�
�
As�shown�in�Figure�1,�PA6�with�1.5%�dendritic�polymers,�melt�index�of�blend�
was� increased� from� 18.2g/10min� to� 46.7g/10min,� enhanced� by� 156%,� thus�
improving�processing�performance.�
�
As� shown� in� Figure� 2,� complex� viscosity� of� blend� was� obviously� decreased�
with� dosage� increasing� of� dendritic� polymers,� maximum� initial� complex�
viscosity� was� reduced� around� 70%,� and� then� a� little� increase,� so� with� 1.5%�
dendritic�polymers,�rheological�properties�of�dendritic�polymers/PA6�reached�
best.�
Melt Index
Figure�1�Effect�of�dendritic�polymers�dosage�on�melt�index�of�nylon�blends�
Please�mail�to�[email protected]�to�get�more�info�and�details.�
Tel:�86-631-5582881�
Add:�No.369-13,Industrial�District,Weihai�City,Shandong�Province,China,264205�
CYD COMPANY
Figure�2�Effect�of�dendritic�polymers�dosage�on�rheological�properties�of�PA�blend�
PA6 performance improved by dendritic polymers--2
Preparation methods:
Blend� of� PA6/dendritic� polymers� (0.1-2.0%� of� PA6� amount)� was� melted� and�
extruded�through�Twin-screw�extruder,�then�dried�in�vacuum�around�12h�and�
injected�into�standard�samples,� injection�pressure�80bar,�back�pressure�5bar,�
maintaining pressure�60bar,�the�mold�temperature�was�30℃.�
�
As� shown� in� Table� 1,� compared� with� pure� PA6� system� at� different�
temperature,� melt� index� of� system� was� greatly� increased� after� adding�
dendritic�polymers,�when�dosage�was�2.0%,�melt�index�at�235℃,�245℃,�255℃�
and�265℃�was�improved�by�41.3%,�46.1%,�37%,�36.1%.�
�
As� shown� in� Table� 2,� with� 0.5%� dendritic� polymers� as� additives,� injection�
molding�temperature�was�decreased�10℃�compared�with�pure�PA6�system,�if�
increase� the� dosage� to� 2.0%,� processing� temperature� lowered� 15℃,� thus�
reducing�thermal�degradation�during�processing.�
Dendritic� polymers� as� additives� can� significantly� improve� mechanical�
properties� of� PA6,� with� 2.0%� dosage,� the� yield� strength,� tensile� modulus,�
Please�mail�to�[email protected]�to�get�more�info�and�details.�
Tel:�86-631-5582881�
Add:�No.369-13,Industrial�District,Weihai�City,Shandong�Province,China,264205�
CYD COMPANY
Please�mail�to�[email protected]�to�get�more�info�and�details.�
Tel:�86-631-5582881�
Add:�No.369-13,Industrial�District,Weihai�City,Shandong�Province,China,264205�
notched� impact� strength� and� flexural� strength� were� increased� by� 12.8%,�
30.8%,�44.2%,�17.5%.�
Table 1 Melt flow index of PA6/Dendritic polymers blends with different
dendritic polymers contents.�(Load: 2.16 kg)
MFI(g/10min) Dendritic polymers
content(wt%) 235℃ 245℃ 255℃ 265℃
Pure PA6 13.8 19.1 25.4 32.1
0.1 13.6 18.5 24.8 31.6
0.5 16.2 21.2 27.5 33.2
1.0 17.1 22.5 29.2 35.0
2.0 19.5 27.9 34.8 43.7
� Table 2 Injection molding temperatures of PA6/Dendritic polymers blends�
Barrel temperature(℃) Dendritic polymers
content(wt%) Ⅰ Ⅱ Ⅲ Ⅳ
Pure PA6 220 235 230 220
0.1 215 230 225 215
0.5 210 225 220 210
1.0 210 220 215 205
2.0 205 215 210 205
CYD COMPANY
Please�mail�to�[email protected]�to�get�more�info�and�details.�
Tel:�86-631-5582881�
Add:�No.369-13,Industrial�District,Weihai�City,Shandong�Province,China,264205�
Dendritic polymers improve compatibility performance of PA6/PA1010
3.0%�content�dendritic�polymers�was�added�to�blend�of�PA6/PA1010,�tensile�
strength was� enhanced� 18.8%� which� from� 66.1MPa� to� 78.5MPa,� bending�
strength� was� increased� by� 15.7%� which� from� 82.2MPa� to� 95.1MPa,� and�
flexural�modulus�was�raised�by�26.4%�which�from�1938MPa�to�2450MPa.�The�
data� shows� that� dendritic� polymers� play� compatibilization� effect� in� blends�
systems,�strengthen�the�interface�binding�between�PA6�and�PA1010,�and�also�
improve�processing�fluidity.�
Applicable Grades:CYD-P Series, CYD-PR121, CYD-PR526, CYD-PU738,
CYD-PD529 etc.