Main Menu
- Home
- Login
- Register
- Submit Article
- Latest Articles
- Most Popular Articles
- Directory Submission
- Article Distribution
- Search
Pages
Links
- ArticlesBusiness.net
- OrganizingWeb.net
- CreditCardBadCreditPeople.info
- DomainForBusiness.net
- Online2Earn.net
- Viaggiare-Informati.net
- DirectoryResearch.info
- DirectoryPlanet.net
Site Stats
-
Total Category: 23
Total articles: 530
Total authors: 3695
6 users online.
Business News
| Leader hopeful on coordinated Euro crisis response Sun, 12 Oct 2008 14:19:34 GMT |
|---|
| PARIS (AP) -- The president of the European Commission said he was very hopeful that a meeting of European leaders Sunday would take an important step toward a coordinated response to the global financial crisis.... |
| Palin has mixed record as fiscal conservative Sun, 12 Oct 2008 14:21:21 GMT |
| ANCHORAGE, Alaska (AP) -- Alaska Gov. Sarah Palin, the Republican nominee for vice president, bills herself as a fiscal conservative. But that can be a relative term when you're governor of a state gushing with oil money.... |
| Developing countries feeling fallout from meltdown Sun, 12 Oct 2008 12:43:07 GMT |
| WASHINGTON (AP) -- Searching for ways to tackle the unfolding economic crisis, global finance ministers are turning attention to the fallout in developing countries and poor nations.... |
| Efforts on global warming chilled by economic woes Sun, 12 Oct 2008 14:22:41 GMT |
| WASHINGTON (AP) -- The economic free fall gripping the nation may bring down one of the main environmental objectives: capping the greenhouse gases that are blamed for global warming.... |
| Bailout managers may be buying own securities Sun, 12 Oct 2008 14:28:01 GMT |
| WASHINGTON (AP) -- The government's plan to make sure private managers of a $700 billion bailout plan are free of conflicts of interest is weak, according to some critics, and allows too much room for abuse.... |
| Analysts: GM would need cash to acquire Chrysler Sun, 12 Oct 2008 09:14:01 GMT |
| DETROIT (AP) -- For General Motors Corp. to acquire Chrysler LLC and all of its warts, GM would have to get desperately needed cash as part of the deal. Lots of it, according to industry analysts.... |
| Tax rebate, food stamp money possible in aid plan Sun, 12 Oct 2008 09:12:45 GMT |
| WASHINGTON (AP) -- After consulting with Barack Obama, Democratic leaders are likely to call Congress back to work after the election in hopes of passing legislation that would include extended jobless benefits, money for food stamps and possibly a tax rebate, officials said Saturday.... |
| Emirates officials say nation's banks are strong Sun, 12 Oct 2008 11:01:43 GMT |
| DUBAI, United Arab Emirates (AP) -- Officials in the United Arab Emirates say the country's financial institutions remain healthy despite growing fears the global credit crisis will hurt the booming Gulf economy.... |
| Bush visits finance officials, urges cooperation Sun, 12 Oct 2008 00:23:05 GMT |
| WASHINGTON (AP) -- Global finance leaders are pledging cooperation between rich and poor nations to deal with a severe credit crisis after President Bush discussed the seriousness of the current situation.... |
| All that money you've lost _ where did it go? Sat, 11 Oct 2008 16:41:59 GMT |
| NEW YORK (AP) -- Trillions in stock market value - gone. Trillions in retirement savings - gone. A huge chunk of the money you paid for your house, the money you're saving for college, the money your boss needs to make payroll - gone, gone, gone.... |
Categories
Sponsors
FreeBusinessContent.net » Small-business » Comparison Of Acrylic With Other Materials
Article Source: FreeBusinessContent.net
Previous Article - Next Article
Rating: Not yet rated
Comparison Of Acrylic With Other Materials
Author: Savey Bakarne
Total views: 47
Word Count: 447
We can compare acrylic with other materials on the following grounds. Polystyrene is the closest clear-plastic competitor in optical properties, but its performance at lower light wavelengths does not rival that of acrylic. It begins to absorb light at about three hundred and fifty nanometers and, consequently, does not transmit it. Same is the property of acrylic. Polycarbonate is a key material in the medical device area and is normally not used for diagnostic equipment when maximum clarity is a requirement. When taking about non diagnostic applications, acrylic competes with other clear plastics. These plastics include polystyrene, styrene acrylonitrile (SAN), polyvinyl chloride (PVC), polyethylene terephthalate glycol (PETG), and clear acrylonitrile butadiene styrene (ABS). Each of this material has its own advantages and disadvantages, depending on the application.
Polycarbonate material is clearly dominant when strength and toughness are the prime requirements as it tends to be over specified, especially for large parts whose failure in a medical environment could have severe consequences. While styrene copolymers are starting to gain on polycarbonate because of their toughness, clarity, and moderate pricing. On the downside, they are fairly soft and easily scratched. Chemical resistance offered by acrylic is much better than polycarbonate. When talking of impact resistance and strength, polycarbonate is tougher, although impact-modified acrylic grades can be used in many applications that specify polycarbonate. Acrylic is better than polycarbonate in terms of clarity, scratch resistance, and ultra violet transmission, and generally offers better process ability, since polycarbonate is prone to problems related to molded-in stress, such as crazing and cracking. When compared to ABS and clear PETG, ABS is less susceptible to residual molding stresses than polycarbonate, while PETG is less susceptible to chemical attack. But neither ABS nor PETG provides the clarity, scratch resistance, or light transmission of acrylic, and PETG is more difficult to process, tending to warp under adverse molding conditions.
Poly vinyl carbonyl is often selected when a flexible material is required, although it does not provide the clarity or scratch resistance of acrylic. Other competitors of acrylic in the medical market are polystyrene and styrene-containing copolymers such as SAN. These styrene materials exhibit low melt viscosity and are easy to process, but cannot quite match the performance of acrylic in the areas of clarity and UV transmittance. Polystyrene is used typically for complex parts because of its excellent process ability, which reduces the molded-in stresses that can affect light transmission in very complex parts. Failure of plastic parts is often traced to be mistakes in design, production methods, or material choice. When selecting the material for a particular application involves careful consideration of the end-use environmental conditions and functional requirements of the part.
Article Source: FreeBusinessContent.net
About the Author
Savey Bakarne is a professional retail display specialist and teaches store owners how to gain profits from utilizing the proper Custom Retail Store Displays.
Previous Article - Next Article
Rating: Not yet rated
Login to vote
Comments
No comments posted.
Add Comment
You do not have permission to comment. If you log in, you may be able to comment.
Copy and Paste Article Code.
Login to vote
Comments
No comments posted.Add Comment
You do not have permission to comment. If you log in, you may be able to comment.Copy and Paste Article Code.
Remember: The article body, title, author bio and links may not be changed or removed. By publishing this article, you agree to all the terms in our Terms of Service.