The latest manufacturing technology allows polymerization of AEM grades with optimized structure and chemical composition, which provides significant improvements over the existing standard DuPont ™ Vamac® elastomers. These grades, designated and sold as Vamac® Ultra, provide true step-change improvement in processability, performance and customer value for targeted applications.
Vamac® Ultra IP (developmental name VMX-3040) is the first of the Ultra family products to be commercialized. During the development phase, a goal was to identify a product having improved performance in injection molding processes compared to Vamac® G to reduce the frequency of mold cleaning. The high viscosity of Vamac® Ultra IP compared to standard AEM grades results in better mixing as well as increased green strength of compounds, and helps to avoid collapse during extrusion processes. The optimized polymer structure ensures gains in physical properties resulting in improved performance of rubber parts such as seals, dampers and extruded hoses. Low abrasion values may allow extended use of Vamac® Ultra IP in dynamic seals.
The best physical properties of Vamac® Ultra IP are obtained in rubber parts having a hardness range between 50 and 90 Shore A. Extensions of this hardness range may be more easily achieved with Vamac® Ultra IP than standard AEM using appropriate compounding.
Vamac® Ultra IP combines dry heat resistance of 175 °C over a period of 1000 h (six weeks) with very good resistance to automotive lubricants. Exposure of peak temperatures of 200 °C are possible for up to four days. At the same time, the Tg of -31 °C provides very good low temperature flexibility.
Good compression set and compressive stress relaxation properties make Vamac® Ultra IP an excellent choice for sealing applications. Good resistance to Blow-By (hot air, acids, oil and petrol fumes), present in automotive crankcase venting systems and air ducts combined with increased dynamic resistance are additional attributes of Vamac® Ultra IP.
Like every other grade of Vamac® , Vamac® Ultra IP is halogen-free.
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基本信息
特性
低温下的柔性
良好耐磨损性
耐化学性良好
耐热性,高
无卤
硬度高
粘度,高
用途
管件
密封件
汽车领域的应用
外观
清晰/透明
形式
包
加工方法
复合
物理性能
额定值
单位制
测试方法
门尼粘度 (ML 1+4, 100°C)
MU
ASTM D1646
硬度
额定值
单位制
测试方法
肖氏硬度
ASTM D2240
邵氏 A
ASTM D2240
邵氏 A, 1 秒, 6.00 mm1
ASTM D2240
机械性能
额定值
单位制
测试方法
抗磨损性 -
Sandpaper
mm³
ISO 4649
补充信息
额定值
单位制
测试方法
MDR 2
ASTM D5289
MH
: 180°C
dNm
ASTM D5289
ML
: 180°C
dNm
ASTM D5289
Peak Rate
: 180°C
dNm/min
ASTM D5289
tc10
: 180°C
sec
ASTM D5289
tc50
: 180°C
sec
ASTM D5289
tc90
: 180°C
sec
ASTM D5289
Ts2
: 180°C
sec
ASTM D5289
Mooney Scorch -
T5
(121°C)
min
ASTM D1646
Resilience
%
ISO 4662
挥发性
wt%
内部方法
弹性体
额定值
单位制
测试方法
拉伸应力
ASTM D412
100%应变3
MPa
ASTM D412
100%应变
MPa
ASTM D412
100%应变, 150°C4
MPa
ASTM D412
100%应变, 160°C5
MPa
ASTM D412
抗张强度
ASTM D412
屈服6
MPa
ASTM D412
屈服
MPa
ASTM D412
伸长率
ASTM D412
断裂7
%
ASTM D412
断裂
%
ASTM D412
撕裂强度
ISO 34-1
--
kN/m
ISO 34-1
--
kN/m
ISO 34-1
压缩永久变形
23°C, 94 hr
%
VW PV3307
150°C, 70 hr8
%
ASTM D395
150°C, 94 hr
%
VW PV3307
150°C, 168 hr9
%
ASTM D395
150°C, 168 hr10
%
ASTM D395
175°C, 70 hr11
%
ASTM D395
175°C, 70 hr12
%
ASTM D395
175°C, 1008 hr13
%
ASTM D395
190°C, 70 hr14
%
ASTM D395
老化
额定值
单位制
测试方法
空气中拉伸强度的变化率
ASTM D573
175°C, 504 hr
%
ASTM D573
100% 应变, 175°C, 504 hr
%
ASTM D573
190°C, 168 hr
%
ASTM D573
100% 应变, 190°C, 168 hr
%
ASTM D573
空气中极限伸长率的变化率
ASTM D573
175°C, 504 hr
%
ASTM D573
190°C, 168 hr
%
ASTM D573
空气中硬度计硬度的变化率
ASTM D573
支撐 A, 175°C, 504 hr
ASTM D573
支撐 A, 190°C, 168 hr
ASTM D573
拉伸强度的变化率
ASTM D471
150°C, 168 hr, Dexron® VI
%
ASTM D471
160°C, 504 hr, Lubrizol OS 206304,5W40
%
ASTM D471
极限伸长率的变化率
ASTM D471
150°C, 168 hr, Dexron® VI
%
ASTM D471
160°C, 504 hr, Lubrizol OS 206304,5W40
%
ASTM D471
硬度计硬度的变化率
ASTM D471
支撐 A, 150°C, 168 hr, 在 Dexron® VI 中
ASTM D471
支撐 A, 160°C, 504 hr, 在 Lubrizol OS 206304、5W40 中
ASTM D471
质量变化率
ASTM D471
150°C, 168 hr, 在 Dexron® VI 中
%
ASTM D471
160°C, 504 hr, 在 Lubrizol OS 206304、5W40 中
%
ASTM D471
体积变化
ASTM D471
150°C, 168 hr, Dexron® VI
%
ASTM D471
160°C, 504 hr, Lubrizol OS 206304,5W40
%
ASTM D471
热性能
额定值
单位制
测试方法
玻璃转化温度
°C
ASTM D7426
备注
1 .
Results on Heat Ageing of Three 60 Shore A Compounds
2 .
0.5deg / 12 min
3 .
Results on Heat Ageing of Three 60 Shore A Compounds
4 .
168 hrs, Ageing in Petro Canada Dexron® VI
5 .
504 hrs, Ageing in Lubrizol® OS 206304 , 5W40
6 .
Results on Heat Ageing of Three 60 Shore A Compounds
7 .
Results on Heat Ageing of Three 60 Shore A Compounds
8 .
12 mm molded disks
9 .
Results on Heat Ageing of Three 60 Shore A Compounds
10 .
12 mm molded disks
11 .
12 mm molded disks
12 .
Results on Heat Ageing of Three 60 Shore A Compounds