Pei resin, pei granule, pei pellets manufacturer supplier in china, offering sabic ultem pei resin 2110 pei granules 21107301, high quality guanidine thiocyanate cas 593840 with reasonable price, antiestrogen exemestane acatate aromasin cas 107868304 and so on. Offers high flow, durability, excellent mechanical properties, excellent dimensional stability and easy processability with low toxicity and smoke evolution. The ultem 2000 series are glass reinforced resins to provide greater stability and improved dimensional stability while retaining excellent processibility. Also, the amorphic structure of ultem can cause relaxation under influence of bondings on the long term. China sabic ultem pei resin 2210 natural pei 22107301. Ultem standard, unfilled polyetherimide has a high dielectric strength, inherent. It is highly used in medical applications and it is also fda approved. Amorphous thermoplastics flexural modulus stiffness psi ultem 30% glassfilled 1,300,000 polycarbonate 20% glassfilled 800,000 pvc 481,000 ultem 480,000 acrylic 480,000 polysulfone 390,000 noryl. In order to eliminate these problems extruded products are annealed. Glass filled grades appear tan or greenish in color.
Ultem resin 1010 is an amorphous, transparent, flame retardant polyetherimide pei grade. In particular watch out for notchsensitive geometries. Sabic ultem r natural7101 black pei polyetherimide. It is prone to stress cracking in chlorinated solvents. Either option increases the flow length of the product by approximately 10 to 25% and will facilitate molding of complex thinwalled parts.
The bondit b45th has sufficient elasticity to absorb stresses and minimize risk of stress cracking of the ultem. The ultem tm family of amorphous thermoplastic polyetherimide pei resins offers outstanding elevated thermal resistance, high strength and stiffness, and broad chemical resistance. Pei resins are used in medical and chemical applications due to their heat resistance, solvent resistance and flame resistance. Ultem polyetherimide is a semitransparent high strength plastic material that can operate in high service temperature environments.
Injection molded part defects cracks in molded parts. Polyetherimide, acronym pei, is an amorphous engineering thermoplastic resin manufactured by sabic innovative plastics under the trade name ultem developed by ge plastics. Ultem exhibits inherent flame resistance and is extremely difficult to ignite. Polyetherimide pei is an amorphous, ambertotransparent thermoplastic with characteristics. Ultem is also fda, usda, and nsfcompliant, as well as usp class vicompliant. The ultem 2000 series is glass reinforced resins that provide greater stability and improved dimensional stability while retaining excellent processibility. Polyetherimide is able to resist high temperatures with stable electrical properties over a wide range of frequencies.
Annealing is important if you want a quality, finished part out of your stock shape. Compared to pes, peek, and kapton, ultem resin manufactured by sabic is a costeffective option with excellent machinability in high heat applications. An introduction to the grades of ultem plastic reading plastic. It offers high heat resistance, high strength and modulus, and broad chemical resistance up to. Unlike most other amorphous thermoplastics, ultem resins retain strength and resist stress cracking when exposed to automotive and aircraft fluids, aliphatic hydrocarbons, alcohols, acids, and weak aqueous solutions. Ultem pei stock shapes display property retention and resistance to environmental stress cracking when exposed to a wide variety of chemicals. Stress and cracking resistance when exposed to aircraft and automotive fluids, alcohols, acids, and more. Due to ultem s high mechanical strength and heat resistant composition, it is ideal for use in harsh environmental conditions needing chemical resistant features and high temperature resistance.
Ultem can be received in the form of rods, sheets, tube or film. Also, pei shows stress cracking in chlorinated solvents which include carbon tetrachloride, tetrachloroethylene and others. The results show crack growth in solvents at very low g i levels as compared with tests in air. Our extrusion process optimized for high performance polymer processing along with our proprietary annealing techniques result in very high quality porosity and stress free material. I think ultem is kind of brittle after looking at the cross sectional view. Ultem stock shapes are inherently flame resistant with low smoke emission. The results reported here confirm that environmental stress cracking. Ultem is resistant to hot water and steam and can withstand repeated cycles in a steam autoclave. Quantum polymers maintains a large inventory of ultem extruded rods and plates. Us fda food contact compliant in recognized colors. Ultem offers high strength and excellent resistance to flame and heat. Here are some of the most common scenarios for cracks in injection molded parts. Ultem this unfilled, generalpurpose grade combines exceptional mechanical, thermal, and electrical properties.
Unsuitable coolants used during machining can lead to subsequent stress cracking. Polyetherimides pi, pei are high performance engineering thermoplastics of amber to transparent color. Pei resin, pei granule, pei pellets manufacturer supplier in china, offering sabic ultem pei resin 2210 natural pei 22107301 black, factory price weight loss orlistat raw test steroids raw powder, recycled gf30 polyetherimide ultem pei resin plastic pellets and so on. All ultem and 2000 series are available with two options. Ultem 2300 is a 30% glassreinforced grade of ultem pei.
Offers durability, excellent mechanical properties, excellent dimensional stability and easy processability with low toxicity and smoke evolution. Solvent stress cracking studies have been carried out in o. The cost is higher than conventional engineering plastics. This high strength material offers excellent chemical resistance and ductile properties suitable for various applications, even those including steam exposure. The glass transition temperature of pei is 420 f and is prone to stress cracking in chlorinated solvents. Polyetherimide pei is ambertotransparent thermoplastic characterized by high heat resistance, high strength and modulus, excellent electrical properties that remain stable over a wide range of temperatures and frequencies, good uv and gama radiation resistance, good hydrolytic stability and excellent processibility.
A full stock parts supply service of pei ultem rods, sheets and uhmwp semifinished plastics with full machining and cutting to size. Ultem resin is an amorphous, transparent polyetherimide pei plastic offering a glass. The standard color of ultem unfilled stock shapes is light amber. Annealing is a stress relief process, which occurs when the material is exposed to heat air or fluid above its glass transition point, which allows the material to decompress back to a relaxed state. Sabic ultem 2110r natural7301 black pei polyetherimide. Ultem is an unreinforced grade offering a heat deflection temperature of 200c 392f at 264 psi and a ul 94 flammability rating of vo at 0. Ultem unfilled polyetherimide round bar on trident. Ultem engineering plastics wah lee group south eas asia. Ultem now duratron u pei is an amorphous thermoplastic. This gives the highperformance polymer greater tensile strength and rigidity than ultem, plus greater dimensional stability, meaning less movement with temperature or load changes. Ultem pei stock shapes are inherently flame resistant with low smoke emission.
The results show crack growth in solvents at very low gi levels as compared with tests in air. Aug 19, 2018 ultem resin f is an amorphous, transparent, flame retardant polyetherimide pei grade. However, ultem pei will not stand up to alkali salts such as sodium bicarbonate, potassium cyanide, sodium sulfide and others. When the bottom surface of the machine part is not flat to the ground let say flatness is about. With continuous use over 340 degrees fahrenheit, ultem has exceptional flame resistance with a limiting oxygen index and low nbs smoke evolution. Cracks in the direction of flow if the crack develops in the direction of the plastics flow into the mold cavity, the cause is molecular orientation. Ultem machining sentinel plastics experts in all plastic. Even when exposed to alcohols, acids, solvents, aliphatic hydrocarbons, and automotive and aircraft fluids, ultem retains its strength and resists cracking.
Discover aips process of machining ultem plastics in this. Ultem resin sabic ultem emco industrial plastics. Ultem standard, unfilled polyetherimide has a high dielectric strength. Surgical probes machined from ultem pei rod are autoclavable. Considerations when machining ultem pep connecticut plastics. Ultem 2300 this gives the highperformance polymer greater tensile strength and rigidity than ultem , plus greater dimensional stability, meaning less movement with temperature or load changes. The composite and adhesively bonded systems have sufficiently high residual thermal stresses to drive an array of intersecting matrixadhesive cracks even without mechanical loading. Ultem injection molding resin family ultem unreinforced general purpose grade ultem f unreinforced general purpose grade,us fda and eu food contact compliant, ultem 2300f 30% glass fiber filled, standard flow polyetherimide tg 217c. It is resistant to uv and gamma radiation, performs especially well in hot air and water environments, retains 85% of its tensile strength after 10,000 hours of immersion in boiling water and 100% of its tensile strength after 2,000 cycles in a steam autoclave at 270. Prediction of environmental stress cracking in plastics with hansen. Nov, 2012 the location of the crack can tell us a lot about its specific cause. China sabic ultem pei resin 2110 pei granules 21107301. Stress relieving before machining through an annealing process is crucial, as it reduces the likelihood that surface cracks and internal stresses will occur from the heat generated. Machining ultem is a specialization at pep connecticut plastics.
760 67 469 674 171 458 498 866 403 577 281 534 446 1258 890 1121 658 671 1347 526 846 1428 1231 958 901 207 968 1454 128 440 204 826 910 36 1625 1495 267 1221 1149 1413 475 723 1077 1356