Your location:  Home  >  Bearing News  >  World Bearing News
<<  Back

Abrasion resistant, electrically insulative epoxy

Resource from:  https://www.aerospacemanufacturinganddesign.com Likes:127
Sep 06,2021

1.jpg

Master Bond EP21NS two-part epoxy may be used for bonding, coating, sealing, and potting/encapsulating. Its nanosilica filler imparts dimensional stability and abrasion resistance. When measured according to ASTM D4060, standard test method for abrasion resistance, with CS-17 wheel for 1,000 cycles, EP21NS exhibits a very low weight loss of 25mg. This formulation is a reliable electrical insulation with a volume resistivity greater than 1015ohm-cm, an outstanding dielectric constant of 2.6 at 16.4GHz, and a dielectric strength of 450volts/mil at 75°F, for a 0.0125" thick specimen. It is serviceable over the temperature range of -80°F to 250°F.


This system has a long working life and good flow properties with a moderate mixed viscosity of 50,000cps to 90,000cps. The mix ratio of EP21NS is 1 to 1 by weight, and its optimal cure schedule is overnight at room temperature followed by 4 to 5 hours at 150°F. It features very low shrinkage upon curing, a low coefficient of thermal expansion of 30-to-35x10-6x in/in/°C and a compressive strength of 16,000psi to 18,000psi.


This compound bonds well to a variety of substrates including metals, composites, glass, ceramics, rubbers, and many plastics. EP21NS is resistant to water and salts. It is packaged in ounce kits, half-pint kits, pint kits, and quart kits. The color of Part A is translucent and Part B is amber. EP21NS does not contain solvents and is RoHS compliant.


(https://www.aerospacemanufacturinganddesign.com)
【CBCC News Statement】
1.The news above mentioned with detailed source are from internet.We are trying our best to assure they are accurate ,timely and safe so as to let bearing users and sellers read more related info.However, it doesn't mean we agree with any point of view referred in above contents and we are not responsible for the authenticity. If you want to publish the news,please note the source and you will be legally responsible for the news published.
2.All news edited and translated by us are specially noted the source"CBCC".
3.For investors,please be cautious for all news.We don't bear any damage brought by late and inaccurate news.
4.If the news we published involves copyright of yours,just let us know.

BRIEF INTRODUCTION

Cnbearing is the No.1 bearing inquiry system and information service in China, dedicated to helping all bearing users and sellers throughout the world.

Cnbearing is supported by China National Bearing Industry Association, whose operation online is charged by China Bearing Unisun Tech. Co., Ltd.

China Bearing Unisun Tech. Co., Ltd owns all the rights. Since 2000, over 3,000 companies have been registered and enjoyed the company' s complete skillful service, which ranking many aspects in bearing industry at home and abroad with the most authority practical devices in China.