tear resistance or tear strength is a measure of how well a material can withstand the effects of tearing. it is a useful engineering measurement for a wide variety of materials by many different test methods . for example, with rubber, tear resistance measures how the test specimen resists the growth of any cuts when under tension, it is .
ptc rubber is a silicone rubber which conducts electricity with a resistivity that increases exponentially with increasing temperature for all temperatures up to a temperature where the resistivity grows to infinity. above this temperature the ptc rubber is an electrical insulator.ptc rubber is made from polydimethylsiloxane pdms loaded with carbon nanoparticles.
silicone foam is a synthetic rubber product used in gasketing, sheets and firestops.it is available in solid, cured form as well as in individual liquid components for field installations.
silastic a portmanteau of ' silicone ' and ' plastic ' is a trademark registered in 1948 by dow corning corporation for flexible, inert silicone elastomer. the silastic trademark refers to silicone elastomers, silicone tubing and some cross-linked polydimethylsiloxane materials manufactured by dow corning, the owner of the global trademark.
self-amalgamating tape is a non-tacky silicone-rubber tape which when stretched and wrapped around cables, electrical joints, hoses and pipes combines or unites itself into a strong, seamless, rubbery, waterproof, and electrically insulating layer. unlike many other polymers and fibers, it is heat-, sunlight-, and weather-resistant.
dressings & topical silicone. silicone scar treatments are commonly used in preventing scar formation and improving existing scar appearance. a meta-study by the cochrane collaboration found weak evidence that silicone gel sheeting helps prevent scarring. however, the studies examining it were of poor quality and susceptible to bias.
rubber cement is an adhesive made from elastic polymers typically latex mixed in a solvent such as acetone, hexane, heptane or toluene to keep the fluid enough to be used. this makes it part of the class of drying adhesives: as the solvents quickly evaporate, the rubber solidifies, forming a strong yet flexible bond.
silicone can be developed into rubber sheeting, where it has other properties, such as being fda compliant. this extends the uses of silicone sheeting to industries that demand hygiene, for example, food and beverage and pharmaceutical. uses. silicones are used in many products.
green strength, or handling strength, can be defined as the strength of a material it is processed to form its final ultimate tensile strength.this strength is usually considerably lower than the final ultimate strength of a material. the term green strength is usually referenced when discussing non-metallic materials such as adhesives and elastomers such as rubber .
butyl rubber is one of the most robust elastomers when subjected to chemical warfare agents and decontamination materials. it is a harder and less porous material than other elastomers, such as natural rubber or silicone, but still has enough elasticity to form an airtight seal.
polydimethylsiloxane pdms , also known as dimethylpolysiloxane or dimethicone, belongs to a group of polymeric organosilicon compounds that are commonly referred to as silicones. pdms is the most widely used silicon-based organic polymer, and is particularly known for its unusual rheological or flow properties.
rtv silicone room-temperature- vulcanizing silicone is a type of silicone rubber made from a two-component system base plus curative; a b available in a hardness range of very soft to medium--usually from 15 to 40 shore a. rtv silicones can be cured with a catalyst consisting of either platinum or a tin compound such as dibutyltin dilaurate.
the material combines some of the properties of rubber, silicone, and other elastic polymers. it is considered to be a good vibration damping material, an acoustic insulator, and highly durable. an unusually high amount of the energy from an object dropped onto sorbothane is absorbed.
medical grade silicones are generally grouped into three categories: non implantable, short term implantable, and long-term implantable. materials approved as class v and vi can be considered medical grade. most medical grade silicones are at least class vi certified. silicone suppliers and some silicone prototyping companies provide guidelines .
silicone rubber keypads also known as elastomeric keypads are used extensively in both consumer and industrial electronic products as a low cost and reliable switching solution. silicone key web design. the technology uses the compression molding properties of silicone rubber to create angled webbing around a switch center. on depression of .