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Complete Guide to Viscosity Part 2: Measurements and Devices Explained

Posted by Vlad David on Jul 7, 2022 12:15:49 PM

This blog is the second installment in our two-part series on viscosity (with special consideration on adhesives and coatings).

In our previous viscosity blog, we discussed the properties of viscosity and how viscosity can be affected by temperature, the addition of dilution or thinning agents, and other similar factors.

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Topics: conformal coating, viscosity

Adhesives for Electric Vehicle Motors: Performance and Protection

Posted by Dan Griffin on Jun 14, 2022 10:04:30 AM

Chase Corporation, through our HumiSeal® and Resin Designs divisions, has spent the past decade preparing protection and reliability solutions for complex electronics. Notably, within the emerging EV market, we have identified needs within the assembly of EV motors where superior adhesion and protection are particularly critical.  

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Topics: Epoxy Adhesives, EV, Electric Vehicle, HumiSeal 2E25

HumiSeal® UV20Gel: Durability and Reliability for PCBs Under Thermal Stress

Posted by Chase Corp Editor on May 10, 2022 11:16:46 AM

 HumiSeal UV20Gel is a unique, strong, and flexible gel coating developed to protect PCB (Printed Circuit Boards) components against environmental conditions and vibrations. UV20Gel has proven successful in many demanding industries and product families including-

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Topics: Conformal Coatings, Electronic Protection, Vibration Suppression, Thermal Compatibility, Protection for PCB, UVGEL

The Evolution of UV Curable Conformal Coatings

Posted by Chase Corp Editor on Mar 8, 2022 10:59:29 AM

Durable Protection for Demanding Automotive Requirements

HumiSeal chemists have been designing state-of-the-art conformal coatings for nearly 70 years, first producing UV curable coatings more than two decades ago. At that time, UV curable technology was considered the next generation of coatings, mainly due to its advantages; including:

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Topics: UV Curable (Type AR/UR), Humiseal, Thermal Conductivity, Conformal Coating Costs, Autonomous cars, Car interior

Protect Yourself Against Counterfeit Conformal Coatings

Posted by Peter Manning on Feb 21, 2022 11:48:04 AM

Counterfeits exist. Our industry is no exception. We’ve pointed out counterfeit conformal coatings on two separate occasions, but it is time to do so again. Unlike most electronics components, damage attributed to counterfeit conformal coatings is often unreported as it can be challenging to tell the difference between counterfeit brands and the original coating. The best way to protect yourself against this is to purchase directly from HumiSeal or one of our authorized channel providers. 

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Topics: conformal coating, Humiseal Blog, counterfeit, Conformal Coating Costs

Complete Guide to Viscosity: Part 1

Posted by Vlad David on Jan 18, 2022 11:15:00 AM

This is the first in a short series on material viscosity, in which we will review what it is and how to measure it. We will start with the definition of viscosity. Viscosity is the internal friction of moving fluid and a measurement of the resistance of a fluid deformed by shear stress. It is measured in centiPoise. The lower the number, the less viscous the material, as can be seen by this comparison chart: starting with water at 1 cPs and ending with honey at anywhere between 2,000 – 10,000 cPs.

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Topics: conformal coating, Coating Application Preparation, conformal coating application, viscosity, Humiseal Blog

Masking Before Parylene Conformal Coating

Posted by Dan Griffin on Oct 28, 2021 11:00:00 AM

Conformal coating with parylene is a very different process compared to coating with traditional solvent-borne or UV curable materials. Parylene coating has some advantages including

  • a very thin application profile,
  • uniform and complete surface coverage, and
  • generally excellent protection and minimal outgassing potential.

On the other hand, parylene coating also presents unique challenges such as

  • a significant investment in complex equipment,
  • batch processes that limit productivity and increases costs, and
  • the user’s inability to selectively control where the coating is applied.

It is this final challenge that we will concern ourselves with within the following discussion.

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Topics: Masking, UV92, Parylene Conformal Coating, Parylene process

b* Stability Explained: Nobody Wants a Yellow LCD Display

Posted by Dan Griffin on Sep 23, 2021 9:00:00 AM

Most anyone over the age of 30 has probably seen Back to the Future and remembers Marty McFly. One line of Marty’s that inexorably drew him into ill-advised actions was the classic “Nobody calls me yellow.” Nothing good comes from yellow, and this turns out to be just as applicable in LCD screen manufacture as it was in the movie.

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Topics: LCD displays, LOCA, Liquid Optically Clear Adhesives, Yellowing

Avoiding Bubbles in LOCA During the Assembly of LCD Displays

Posted by Artee Panwar, PhD on Aug 26, 2021 10:00:00 AM

During the assembly process, the use of a liquid optically clear adhesive (LOCA) is important for ideal visual properties in LCD screen manufacture. The assembly process has evolved and advanced, but there are still potential weaknesses or defects that must be taken into account in both adhesive selection and process design. In this blog installment, we will discuss one of these potential defects: entrapped bubbles.

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Topics: Display Adhesives, LCD displays, LOCA, Liquid Optically Clear Adhesives

Eliminate HAZE & Bring Renewed Clarity to LCD Screens with Improved LOCA Adhesives

Posted by Artee Panwar, PhD on Jun 9, 2021 8:30:00 AM

Haze and lack of clarity are considered among the most vexing and stubborn of defects in the assembly of LCD screens and surfaces. Significant advances have been made in the optical quality and capability of liquid crystals and LEDs; however, these advances can be stunted by choices made further along in the assembly process. Specifically, liquid optically clear adhesives (LOCAs) used in the bonding of assembly layers can cause haze and light refraction either immediately or under certain aging conditions. The proper design of LOCA materials must take this risk of haze development into consideration. There are a number of effective approaches to minimizing or eliminating haze.

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Topics: Humiseal, Adhesive Solutions, Display Adhesives, LOCA, Liquid Optically Clear Adhesives

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