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Low Friction Plastic Technology For Single-use Drug Delivery Devices

Start-up coefficient of friction and stick-slip (or “stiction”) elimination are dominant performance drivers in single-use drug delivery devices that have moving parts. RTP Company has completed a rigorous investigation that establishes and defines a new friction test to measure and compare plastic-against-plastic friction behavior that occurs at initial startup. This new test uses forces and speeds that characterize the action of injection pens, auto-injectors, stop cocks, inhalers, safety syringes and other devices. This paper describes the newly created friction test method, and its core data point known as Glide FactorSM, as well a series of tests to compare the friction behavior of select polymers and internal lubricants for use in single-use drug delivery devices. The use of internally lubricated plastics can eliminate costly secondary operations to apply a topical lubricant, reduce the total amount of silicone that reaches the patient via the device, and improve the overall quality of the device. The goal of this paper is to share a tribological database that enables device designers to screen plastic-on-plastic friction pairs to optimize safe and effective material selections.

Posted in: White Papers, White Papers, Coatings & Adhesives

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Evaluating the Chemistry of Brake Pads using SEM-EDS

Brake pads are a critical part of a vehicle’s overall braking system. With the broad diversity of available brake pad types, sub-types and unique chemistries there is an open question as to which brake pad provides the best overall performance.

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Driving Auto Performance Through Lubricant Selection

Underhood temperatures are gradually rising as aerodynamics dictate tighter packaging and large engines are being replaced by smaller turbocharged and supercharged engines for improved fuel efficiency. With ambient temperatures under the hood exceeding 120 °C (248 °F), finding a lubricant that can withstand the high temperatures for an extended period of time is key.

Posted in: White Papers, Coatings & Adhesives

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Design Tips For Using Coatings

When designing parts for coatings, there are some things you’ll want to take into account. Even the most impeccably designed parts sometimes face problems during the coating process. By following a few basic design tips, you can avoid potential issues down the road. Read our white paper to learn more.

Posted in: White Papers, Coatings & Adhesives

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Ultra Low Thermal Resistant Adhesives for Electronic Applications

As advances in epoxy and silicone materials constantly evolve, manufacturers of advanced electronic systems will find that adhesives offer the ability to meet nearly any combination of requirements for thermal, environmental, and structural stability. As product manufacturers face greater challenges in assembling die, package, and other components into products able to cope with increasing heat loads, adhesives are particularly versatile for bonding, sealing and coating. Moreover, the use of filler materials in adhesives can help to fine tune the specific performance demands required to extend product lifecycles and meet manufacturing requirements. Learn more about why and how ultra low thermally conductive adhesives are the preferred fastening approach in applications requiring careful thermal management.

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Adhesives, Sealants and Coatings for the Aerospace Industry

From prototype to assembly line, our materials have aided in the success of many companies across the aerospace industry. This 28 page catalog features a variety of products that are widely used for structural bonding, sealing and gap filling. These formulations ensure reliability in the assembly of aircraft structures, components, interiors and MRO applications.

Posted in: White Papers, White Papers

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Evaluating Electrically Insulating Epoxies

Dielectric constant, dissipation factor, dielectric strength, surface and volume resistivity are all fundamental electrical properties of epoxies. How they are measured, what values are desirable and how they react to changes in temperature, fillers and other variables are considered in this paper. The specific composition of resin and curing agents will also affect the electrical properties of a cured epoxy system. Three major types of curing agents are explained in this paper along with their benefits and trade-offs with respect to electrical properties.

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