Technical Articles

Epoxy Technology has published these technical articles:

(Plastics, Elastomers and Polymers)
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Proper mixing and handling epoxies eases the application process and allows for the best possible performance of an adhesive....
(Industrial Adhesives)
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Commonly, customers will purchase two component epoxies premixed and frozen in syringes for automated dispensing. This removes the weighing step and ensures that material has already been properly...
(Industrial Adhesives)
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Viscosity and Thixotropic Index (TI) are common terminology used to describe the rheology of an epoxy. They both play a large role on how a product will perform for a particular application....
(Industrial Adhesives)
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Air entrapment is an inevitable occurrence when any product, regardless of its rheology, is mixed. This tip discusses three techniques for removing and reducing this entrapped air....
(Industrial Adhesives)
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Many EPO-TEK products will commonly have a shelf life of one year at room temperature. Several single component materials and some UV cure systems have a six month shelf life or shorter due to the...
(Industrial Adhesives)
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Epoxies cure by a kinetically favored process known as an exothermic reaction. By adding a part B curing agent to the part A monomer, the result is a cured polymer network. Some proceed very rapidly...
(Industrial Adhesives)
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It can often come as a surprise, but crystallization is more of an inconvenience rather than a problem. The ones who are most aware of it are our customers. Frequently, a jar, bottle, bucket or...
(Industrial Adhesives)
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A major advantage of using an epoxy is that it provides a very strong, permanent bond in adhesive applications. This permanence can also act as a limitation when needing to rework, remove or...
(Industrial Adhesives)
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UV curing adhesives offer a convenient way to quickly cure a product in specific applications. These types of chemistries offer two fundamentally different cure mechanisms, cationic or free radical,...
(Industrial Adhesives)
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Selecting the correct syringe (barrel), tip, piston & adapter is crucial for optimal dispensing....
(Industrial Adhesives)
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Mix ratio of a two part epoxy is extremely important in achieving a proper cure. Epoxies use a chemical reaction between a resin and hardener which have a stoichiometric ratio that determines the...
(Industrial Adhesives)
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Silver epoxy adhesives (ECAs) have been widely used in semiconductor and electronic packaging industries since the 1960s, as a reliable connection method instead of soldering or eutectic joining of...
(Industrial Adhesives)
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In adhesive bonding the epoxy is only one part of the equation. Each substrate that is being adhered to is often as important as the adhesive selection. Physical properties such as bond strength,...
(Industrial Adhesives)
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Epoxy adhesive components can be supplied in many different shades and colors, often varying lot-to-lot in appearance. Visual color differences are monitored closely and only after proper quality...
(Industrial Adhesives)
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Room Temperature Curing Electrically Conductive Adhesives (RT ECA) are an attractive option for use with substrates and components that cannot withstand typical heat curing conditions (100°C-150°C) of...
(Industrial Adhesives)
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Epoxy resin separation ("resin bleed or bleed out") is a phenomenon that can take place when working with filled, adhesive systems dispensed onto various surfaces/substrates. It is often described as...
(Industrial Adhesives)
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For wet particle analysis, a Hegman Gauge (sometimes referred to as a grind gauge) is frequently used to determine the fineness of the grind and to analyze different types of particles within an epoxy...
(Industrial Adhesives)
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Optical or unfilled epoxy adhesives are commonly used for adhering various substrates, encapsulating components and providing protective coatings in several optical applications. They are found in...
(Industrial Adhesives)
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The unique molecular structure of epoxy allows for a large variety of mechanical properties through varying formulations. Epoxies can range from very soft and flexible to very hard and rigid. Softer...
(Industrial Adhesives)
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B-staged epoxy resin is a descriptive term used to define a one component epoxy system, using a latent (low reactivity) curing agent. This unique product can be partially cured (sometimes referred to...
(Industrial Adhesives)
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Epoxy adhesives are a great choice for many applications for their excellent adhesion, chemical and temperature resistance, as well as many other attributes. When selecting an epoxy for a specific...
(Industrial Adhesives)
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Epoxy adhesives are universally known for their high strength and toughness in bonding a wide variety of substrates found in semiconductor and electronics assembly. Although an epoxy's inherent nature...
(Industrial Adhesives)
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The Glass Transition Temperature (Tg) is one of the most important properties of any epoxy and is the temperature region where the polymer transitions from a hard, glassy material to a soft, rubbery...
(Industrial Adhesives)
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Aluminum is a popular metal that is often chosen in various manufacturing processes. It has many important physical properties including: light weight, corrosion resistance, excellent conductivity,...
(Industrial Adhesives)
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Dielectric, by definition, means any insulating medium which intervenes between two conductors. In simple terms, it suggests the absence of conduction and describes materials which are not electrical...
(Industrial Adhesives)
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Pot life, working life, and gel time are properties of an epoxy that can vary greatly from product to product. These properties play a vital role in material selection in choosing an adhesive for a...
(Industrial Adhesives)
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Polyimides are synthetic polymers containing two acyl groups (C=O) bonded to nitrogen (N); known as imides. They are supplied as a one component system and typically contain solvents. Polyimides are...
(Plastics, Elastomers and Polymers)
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Amine blush can be avoided with appropriate precautions....
(Plastics, Elastomers and Polymers)
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Sterilization is a process that effectively kills any transmissible agents (such as bacteria, viruses, fungi, spore forms, etc.) on a surface. The selection of a specific sterilization method is...
(Electrical, Optical, and Specialty Materials)
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The integration of sensor and electronics is important to reduce size, cost and power consumption for a measurement system. Sensors based on piezoelectric ceramic materials traditionally have a low...
(Industrial Adhesives)
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Epoxy based adhesives are prevalent interface materials for all levels of electronic packaging. One reason for their widespread success is their ability to accept fillers. Fillers allow the adhesive...
(Electrical, Optical, and Specialty Materials)
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Manufacturers can draw from a broad spectrum of techniques to sterilize and disinfect medical devices, and new physical and chemical processes continue to be developed. A leading reason for this...
(RF, Microwave, and Wireless Components)
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Methods for fabricating and modeling high frequency 2-2 composites and arrays are presented. The composites are suitable for arrays and small aperture single element devices operating above 20 MHz....
(Plastics, Elastomers and Polymers)
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This paper discusses silver filled and boron nitride filled epoxies for heat-sinking and thermal transfer. Case studies of thermal resistance calculations have been presented with comparisons made...
(Electrical, Optical, and Specialty Materials)
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After selecting the appropriate adhesive, determining the proper cure schedule is a very important aspect to achieving optimal adhesive performance for your specific application....
(Electrical, Optical, and Specialty Materials)
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Epoxies are used in the packaging and assembly of three opto-electronic devices, including Fiber Optics, LEDs, and LCDss. In fiber optics, you need epoxy for the cable and for the opto-packaging. The...
(Electrical, Optical, and Specialty Materials)
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This guide is an educational tool designed to assist adhesive users in gaining a more thorough understanding of adhesive properties and testing....
(Electrical, Optical, and Specialty Materials)
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This paper describes the fabrication of large (up to 45 cm2) arrays of microwells, with volumes as small as 13 fL/well and densities as high as 107 wells/cm2....
(RF, Microwave, and Wireless Components)
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The acoustic properties of passive materials for ultrasonic transducers have been measured at room temperature in the frequency range from 25 to 65 MHz using ultrasonic spectroscopy. These materials...
(Electrical, Optical, and Specialty Materials)
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When selecting an EPO-TEK product for any application, the datasheet provides excellent information, and is a useful first reference guide. It is therefore important that the datasheet be correctly...
(Electrical, Optical, and Specialty Materials)
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Luxeon Emitters dissipate approximately 1W of thermal energy and therefore heatsinking and thermal design is critical when using Luxeon Emitters to create Power Light Sources....
(Electrical, Optical, and Specialty Materials)
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An assembly process for LCoS microdisplays using inorganic alignment layers has been developed. The specific problems emerging when using this approach were identified and solved. This enables the...
(Electrical, Optical, and Specialty Materials)
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Screen print patterning is an attractive alternative to traditional semiconductor photo-lithography. Our work compared the pattern resolution and mechanical resistance of screen-printed polymers...
(Electrical, Optical, and Specialty Materials)
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Since efficient green electroluminescence ~EL! from an organic light emitting device (OLED) was first reported, there has been considerable interest in utilizing OLEDs for full color flat panel...
(Plastics, Elastomers and Polymers)
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Screen print patterning is an attractive alternative to traditional semiconductor photo-lithography. Our work compared the pattern resolution and mechanical resistance of screen-printed polymers...
(Industrial Adhesives)
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The adhesive dispensing process, can be defined as the process of transferring adhesive onto the PCB solder mask in a position suitable for holding the later placed components until the PCB is wave...
(Industrial Adhesives)
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This paper presents the results of a continuous improvement from: Designed Experiments, Viscosity measurements, Statistical Process Control, documented operating procedures, and operator training &...
(Industrial Adhesives)
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Flip-chip assembly technology is becoming more and more important to radio frequency (RF) MCM with the following advantages: automated assembly, compact size, low cost, low cross talk, and low...
(Industrial Adhesives)
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The use of solventless adhesives in the fabrication of medical devices continues to increase in all areas of the industry try to legislation that prohibits the use of solvents and solvent-laden...
(Temperature Sensing)
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Did you know that maintaining proper humidity levels in your manufacturing environment can play a critical role in ensuring proper curing and performance of your adhesive?...
(Industrial Adhesives)
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EPO-TEK® Glossary Of Terms...
(Industrial Adhesives)
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Epoxy Bleed Out in Ceramic Chip Carriers...
(Temperature Sensing)
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"We recently switched from a low temperature minimum alternate cure to the recommended data sheet cure and the epoxy cured darker than usual. Is the higher cure temperature degrading the epoxy?" Our...
(Industrial Adhesives)
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Epoxy Techniques for Hybrid Microwave Integrated Circuits...
(Industrial Adhesives)
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High Density Hermetic Assembly Using Die Attachment...
(Safety and Personal Protective Equipment)
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Skin Problems - A Top Job Hazard Precautions and Preventative Procedures of Skin Dermatitis...
(Electrical, Optical, and Specialty Materials)
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This paper discusses the advantages of a UV Hybrid Epoxy. A UV Hybrid Epoxy combines the fast tacking of a UV curing system with the long-term reliability of an epoxy. With this new adhesive line,...