A nonlinear regression approach to model the physical aging of poly(ether imide).: An article from: Polymer Engineering and Science
A nonlinear regression approach to model the physical aging of poly(ether imide).: An article from: Polymer Engineering and Science Feature
A nonlinear regression approach to model the physical aging of poly(ether imide).: An article from: Polymer Engineering and Science Overview
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on January 1, 1997. The length of the article is 3276 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.
From the author: Differential scanning calorimetry (DSC) was used to measure the relaxation enthalpy of glassy amorphous poly(ether imide) (PEI) at three high isothermal aging temperatures between 190 and 200 [degrees] C. A three-parameter model based on the Williams-Watts relaxation function was utilized to describe the aging process of PEI, and nonlinear regression approach was used to estimate the model parameters. The prediction according to this model was found to be more accurate in comparison with the two-parameter model based on the same Williams-Watts relaxation function. Furthermore, the peculiar aging behavior at the highest aging temperature of 200 [degrees] C was explained from the molecular view point of transition from sub-[T.sub.g] [Beta]-relaxation to [Alpha]-relaxation near [T.sub.g].
Citation Details Title: A nonlinear regression approach to model the physical aging of poly(ether imide). Author: E.M. Woo Publication:Polymer Engineering and Science (Refereed) Date: January 1, 1997 Publisher: Society of Plastics Engineers, Inc. Volume: v37 Issue: n1 Page: p173(6)
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A nonlinear regression approach to model the physical aging of poly(ether imide).: An article from: Polymer Engineering and Science Specifications
Structural estimation of particle arrays at air-water interface based on silica particles with well-defined and highly grafted poly(methyl methacrylate).(Report): … from: Polymer Engineering and Science
Structural estimation of particle arrays at air-water interface based on silica particles with well-defined and highly grafted poly(methyl methacrylate).(Report): … from: Polymer Engineering and Science Feature
Structural estimation of particle arrays at air-water interface based on silica particles with well-defined and highly grafted poly(methyl methacrylate).(Report): … from: Polymer Engineering and Science Overview
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on June 1, 2010. The length of the article is 4350 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.
From the author: Silica nanoparticles with well-defined, highly grafted dense poly (methyl methacrylate) (MMA) were prepared by surface-initiated activators regenerated by electron transfer for atom transfer radical polymerization (ARGET ATRP) of methyl methacrylate with an initiator-fixed silica particle in the presence of air. Two different polymerizations of MMA were carried out under the same conditions using tris[2-(dimethylamino)ethyl]-amine ([Me.sub.6] TREN) and N,N,N’,N’,N”-pentamethyldiethy-lene-triamine (PMDETA) as the ligand, respectively. In the [CuCI.sub.2]/PMDETA system, polymerization appeared to be more controlled with a lower polydisperisty compared with the [CuCI.sub.2]/[Me.sub.6] TREN system. The monolayer of these particles was formed at the air-water interface using Langmuir-Blodgett (LB) technique. Multilayers of the particles were fabricated by repetition of LB depositing. A surface pressure-area ([pi]-A) measurement and SEM observation were used to characterize the particle arrays. POLYM. ENG. SCI., 50:1067-1074, 2010. [C]2009 Society of Plastics Engineers
Citation Details Title: Structural estimation of particle arrays at air-water interface based on silica particles with well-defined and highly grafted poly(methyl methacrylate).(Report) Author: Jung-Min Moon Publication:Polymer Engineering and Science (Magazine/Journal) Date: June 1, 2010 Publisher: Society of Plastics Engineers, Inc. Volume: 50 Issue: 6 Page: 1067(8)
Article Type: Report
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Structural estimation of particle arrays at air-water interface based on silica particles with well-defined and highly grafted poly(methyl methacrylate).(Report): … from: Polymer Engineering and Science Specifications
This is a red lighted coconut palm tree, video taken at night. You can see the leaves pulse a light pattern, which is fully adjusted through an on board controller. These trees are made from tough poly-vinyl plastic made to stand up to harsh weather. They are a real attention getter, sure to draw crowds and make your business more visible from far away.
www.twwrc.homestead.com Going to turn the original Superfly over to my son, so this is the new Superfly 2. It has been modified to take a 7″ prop, and we’ve moved the motor forward and modified the battery-holding area. This is the best yet! Still flying 2 cell 2200 mah li-poly. Added plastic canopy from Wally World purchases to protect electronics from snow.
Effects of the spin line temperature profile and melt index of poly(propylene) on melt-electrospinning.(Technical report): An article from: Polymer Engineering and Science
Effects of the spin line temperature profile and melt index of poly(propylene) on melt-electrospinning.(Technical report): An article from: Polymer Engineering and Science Feature
Effects of the spin line temperature profile and melt index of poly(propylene) on melt-electrospinning.(Technical report): An article from: Polymer Engineering and Science Overview
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on February 1, 2009. The length of the article is 2964 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.
From the author: Effects of the spin line temperature and melt index of polymer on fiber formation by the melt-electrospinning process have been studied. Employing four levels of primary heating temperatures and two levels of secondary heating temperatures provided the necessary temperature profiles. Cooling time was altered through variation in tip-to-collector distance Effects of the polymer melt index were also investigated using two types of poly(propylene) with different melt index values. Changes in diameter and structure of the electrospun fibers were then observed using scanning electron microscopy and differential scanning calorimetry. It is worth to note that providing enough cooling time in the spin line is effective in producing finer fibers. However, introducing the higher heating temperature in the spin line adversely affected fibrous shape formation. POLYM. ENG. SCI., 49:391-396, 2009. [C] 2008 Society of Plastics Engineers
Citation Details Title: Effects of the spin line temperature profile and melt index of poly(propylene) on melt-electrospinning.(Technical report) Author: C.S. Kong Publication:Polymer Engineering and Science (Magazine/Journal) Date: February 1, 2009 Publisher: Society of Plastics Engineers, Inc. Volume: 49 Issue: 2 Page: 391(6)
Article Type: Technical report
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Effects of the spin line temperature profile and melt index of poly(propylene) on melt-electrospinning.(Technical report): An article from: Polymer Engineering and Science Specifications
The poly tarp is a durable and well constructed tarp that is made to stand up to the hottest rays of sun and the wettest winter days. If you finally got that Corvette you have saved for, you need to cover it with a durable poly tarp. Made with the best materials, silver poly tarps are waterproof, mildew proof, and they can survive a few feet of snow on them! The paint job on that Corvette would sure cost a bit if damaged from an ice storm or if it was faded from the summer sun. Think of the money you will save by investing in a quality tarp!
Tarpaulins are made with 18 inch spacing of grommets instead of 36 inches. They have a 40 micron UV coating that makes their protection lasting and durable. Silver poly tarps are not only resistant to mildew and water but to tears and the boiling sun! Some acids won’t even damage a durable poly tarp! Silver is highly reflective color and poly tarps are coated on both sides for better protection against the strongest of UV rays.
The reflective poly tarp is woven from durable polyethylene material and is woven with 14 strands both horizontally and vertically per square inch for a closer and tighter weave. The bottom side of a silver poly tarp is also coated with extra UVI coating. No light will pass through this tarp! The corners of a tarpaulin are reinforced with plastic that is molded and the seams are either double stitched or heat sealed for extra durability the grommets are rust resistant so don’t worry about drops of wet rust falling onto the paint job of that corvette you are covering up with a heavy duty poly tarp. Tying the tarp down will be a cinch. With the reinforced grommets, you can pull a good, close fit with a silver poly tarp over whatever you are trying to keep protected and not have to worry about tearing.
Most Heavy duty poly tarps weigh 6.0 oz. per square yard and have a tensile strength of 1200 Denier. Some silver poly tarps have a tensile strength of 1600 denier. They can be as thick as 12 mls. A mil measures diameter in things like thread and wiring. Denier measures the density of fibers. The silver poly tarp is woven tightly for the durability needed in harsh weather and can be compared to other tarps that are different colors and weigh a lot less. Keep in mind, the higher the denier count, the stronger the tensile strength. The stronger the tarp, the better coverage you will get.
Silver is the most highly reflective of all the colors. Poly tarps made in a silver color are also coated on both sides with UVI coating and has inner material of black mesh that blocks out virtually all light! If you want that corvette to stay in tip top shape, keep it protected from the elements with a quality silver tarp!
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