2016年5月4日星期三

polycarbonate shield for government manufactured in China

Guangdong Guoweixing Plastic Technology Co.,ltd specializing in produce polycarbonate anti-shield. We never do one time business.





 we have been in this line for more than 8 years.
supplier these shield to Arabic government, French government every year. 
If you want customized design of polycarbonate shield or other finished product, please contact Yanley,
cell/whatsapp: 86 13632269575
mail: yanley@chinagwx.com
skype: yanleywang

2016年3月30日星期三

Why GWX polycarbonate sheet applied to construction widely

Why GWX polycarbonate sheet applied to construction widely
With the development of modern construction, plastic sheets are more widely used in various kinds of buildings. They can perfectly combine the strength of traditional building structure & excellent light transmission ability of glass, which makes them more and more popular in everyday life. Here we have a collection of various kinds of polycarbonate sheets, including multiwall hollow polycarbonate sheet, solid polycarbonate sheet, corrugated polycarbonate sheet, etc. Special treatment can be done to suit different application environments, such as anti-fog treatment, anti-UV treatment, etc.

Here lets check comparison between Polycarbonate Sheet & Other Material  
GWX polycarbonate sheet product contains an excellent balance of physical, mechanical and environmental properties than other material those are maintained over a wide range of temperature and humidity conditions. Specific comparison on the properties between GWX polycarbonate sheet & other material sheets is displayed below :  


These properties decides GWX polycarbonate to be the best material for construction.

Besides this application,GWX polycarbonate sheet is used in other much large area,such as below:

1.Decoration in landscape gardening and recreational places, Singular decoration, corridors and pavilions in leisure places.
2.Interior and exterior decorations of commercial building, curtain walls of modern building. 
3.Transportation airline, containers, front wind shields of motorcycles. airplanes, trains, liners, vehicles, motors boats, submarines and police glass shields.
4. Telephone booths, advertising boards, light boxes and exhibition.
5. Instruments and meters, and military industry.
6. High class indoor decoration, such as walls, windows roofs and screens.
7. Sound-insulation walls in expressways and houses
8. Agricultural greenhouses and raising sheds.
9. Lighting of factory buildings, warehouse and markets.
10.ATM machine covers, telephone booth, gateways, garages 
11. Unbreakable material for glazing windows, roof glazing.
12.Soundproof material for partitions
13.Skylights in railway stations & bus stands.
14.Skylights for large warehouses.

2016年3月24日星期四

Goodbye glass Polycarbonate gains favor

Goodbye glass Polycarbonate gains favor
Automotive glass reached a turning point in 2005.
That year the National Highway Traffic Safety Administration issued a clarification of its regulations for automotive glazing. NHTSA's statement said polycarbonate could be used in windows in place of glass provided it met the same performance standards as glass.

"We sent the NHTSA clarification statement to 19 OEMs around the world," says Exatec LLC CEO John Madej. "It allowed us to get beyond technical and legal questions and focus on vehicle performance."
In 2005 Exatec was running about 30 prototype window programs. That jumped to 275 in 2006.
Polycarbonate is 40 to 50 percent lighter than tempered glass and 50 to 60 percent lighter than laminated glass. Designers have been shaving weight out of every part of the vehicle for decades. Windows, though, have been largely untouched.

Panoramic roofs are a styling trend that plays into polycarbonate's strengths, Madej says. Consumers like them because they allow more light into the vehicle. But designers hesitate to add more roof weight because of the risk of rollovers.
The 2006 Mercedes GL class used a polycarbonate roof panel. Daimler AG's 2008 Smart ForTwo also has a polycarbonate roof. The concept Chevrolet Volt uses polycarbonate in the doors, roof and rear hatch. The roof panel of the Volt was designed with touch controls for interior lighting.

Wade Bryant, General Motors' design manager for advanced interiors, says GM plans to use polycarbonate glazing in two unspecified vehicle programs launching between 2010 and 2012. "Polycarbonate will have a distinct advantage in any future vehicle that needs to achieve weight savings," Bryant says.
Polycarbonate is more expensive than glass. High-volume production runs and greater design flexibility may help lower this cost premium. Bryant praises polycarbonate's "formability."

"You can do channels for lighting, sharp creases and other features in polycarbonate that you can't do in glass," he says. Exatec's polycarbonate glazing technology can be used for all vehicle window applications except the front windshield. The company has developed a conductive paste that can be used to form the defroster lines on the backlight, replacing wires. Madej says the company is working with a number of automakers on projects that will be commercial after 2010. He adds: "We know we have to continue to innovate on both the polycarbonate side and the coating side to maximize performance."

Wanna know more about polycarbonate sheet, contact: 
cell/whatsapp: 0086 13632269575
mail: yanley@chinagwx.com

2016年3月21日星期一

Application of polycarbonate

Application of polycarbonate

Electronic components
Polycarbonate is mainly used for electronic applications that capitalize on its collective safety features. Being a good electrical insulator and having heat and flame resistant properties, it is used in myriad products associated with electrical and telecommunications hardware. They are used as dielectric in high stability capacitors.

Construction materials
The second largest consumer of polycarbonate is the construction industry, e.g. for dome lights, flat or curved glazing, and sound walls.


Riot shield
Polycarbonate sheet were widely use because of its high impaction.
Skylight Cover
You can see the skylight use in your community if you move your eyes on it. High light transmission. 

If you wanna know more information about these product, please email at yanley
cell/whatsapp: 0086 13632269575
mail: yanley@chinagwx.com

2016年3月17日星期四

Acrylic VS. Polycarbonate: a quantitative and qualitative comparison

Acrylic VS. Polycarbonate: a quantitative and qualitative comparison 

Acrylic often compared to Polycarbonate, which is another transparent plastic, that is sometimes used for bearing loads. Polycarbonate is sometimes called Lexan®, which is a trademark by GE Plastics. An other popular brand name for Polycarbonate is Makrolon®, owned by Bayer. Acrylic on the other hand is often called Plexiglas. Plexiglas ® is a trademark by Roehm and Hass.

Popular Uses for Acrylic (Plexiglas):
Popular Uses for Polycarbonate (Lexan):
Key characteristics, Acrylic compared to Polycarbonate:
Key characteristics, Polycarbonate compared to Acrylic:


 
Polycarbonate – Lexan
Acrylic – Plexiglas GS
Density
g/cm³
1.2
1.19
Max weight gain during immersion
%
0.35
2.1
Tensile strength σΜ at 23°C
MPa
60-70
80
Flexural strength σbB
MPa
90
115
Impact strength acU (Charpy)
kJ/m2
35
15
Flexural strength σbB
MPa
90
115
Optical Light Transmission
%
89
92
Forming Temperature
°C 
185…205
160…175
Vicat B Temperature
°C 
145
115
Velocity of Sound
m/min
2270
2750
Attenuation at 5MHz
dB/cm
24.9
6.4
Fire Rating
German DIN 4102
B2
B2 (*2)

· Motorcycle helmet visors
· Helicopter Windows, Submarine Windows
· Spectator protection in ice hockey
· Police riot control vehicles modifications
· Aquariums and Terariums (including large public aquarium walls and tunnels)

· Compact discs, DVDs
· Lighting lenses, sun-glass/eyeglass lenses, safety glasses, automotive headlamp lenses, camper windows
· Drinking bottles
· Computers: Apple, Inc.’s MacBook, iMac, and Mac mini
· Cases
· Riot shields, visors
· Instrument panels
· Bullet-proof Glass
· 
· More likely to chip
· less impact resistance then Polycarbonate, but still 10-24 times more resistant than float glass
· more resistant against evenly distributed loads then Polycarbonate
· Less likely to scratch.
· Does NOT yellow after time.
· Better clarity. Acrylic can be restored to optical clarity by polishing.

· Impact/chip resistance is much higher with Polycarbonate. (about 30 times more resistant than glass)
· More likely to scratch.
· Substantially more expensive. (roughly 2 to 3 times)
· Used for more industry applications
· Bulletproof when thick enough.
· More bendable under normal temperatures (0-20°C)
· Yellows over time due to ultraviolet rays
· Easier to work with (cut, less likely to break)
· Poorer clarity, diffuses light

                  


More information, please contact Yanley


2015年12月1日星期二

Advice of installing greenhouse



So You're Thinking About Buying a Greenhouse


Eventually every gardener considers the purchase of a greenhouse. A greenhouse offers the opportunity to enjoy gardening every month of the year. It also represents a considerable commitment in money, time, and space. This guide has been developed to help you select from the variety of available greenhouses.


You will want your greenhouse to meet both your gardening needs and your pocketbook. This guide can help you decide what type of greenhouse best fits these requirements, whether it is one from us or a different greenhouse.


1. What size greenhouse?
Greenhouse size is usually dictated by factors like available space and construction costs versus need or desire. When choosing a size, consider if the greenhouse will be used year-round, seasonally, or mainly as a sunspace. If you want a greenhouse to house an extensive collection of houseplants, then it is best to plan on building or purchasing a structure that is larger than your current space requirements. Most hobby greenhouse owners find they need a larger greenhouse than they originally thought. Upgrading later on may be more costly than ordering a larger unit from the beginning. Another important size consideration often neglected is height. You want to make sure your greenhouse has adequate head room. You need to consider both peak and eave (sidewall) height. Taller houses are also easier to heat and ventilate because the air has a greater buffer area.


2. What will the greenhouse be used for?

I want to get a head start in early spring and/or a few extra growing weeks in late fall.
This is an easy task for a greenhouse. How much extra time the greenhouse will provide will vary based on your local climate and if you choose to equip the greenhouse with automatic ventilation and heating. Any of the greenhouses we offer can be used for season extension since heating and cooling requirements are very low for this purpose.

I am interested in overwintering plants that are not hardy in my area.
Overwintering, maintaining the minimum temperature needed for plants to survive, requires heating the greenhouse even if it is for a short period of time. Greenhouses suitable for overwintering can also be used for season extending. Inexpensive greenhouses like the FlowerHouse and Little Greenhouse are fine in milder climates that you don't expect needing to heat the greenhouse more than about 30° F above the outside temperature for any extended length of time.

If you are in a colder climate with temperatures that sometimes drop to 0° F or below, a greenhouse with an insulated covering is recommended. These greenhouses are not only retain heat better, but they also generally offer a tighter seal than other greenhouses making them easier to heat. The Cross Country, Grow More,Aspen, and Sunshine models would be better suited for this purpose.

I want to grow plants in a greenhouse during the winter.
This is different from overwintering plants because plants generally need higher temperatures to grow and thrive versus just staying alive. In this case, an insulated greenhouse will be worth the extra investment because of the lower heating cost. The Cross Country, Grow More, Aspen, and Sunshine models are better greenhouses for growing in the winter.

I want a greenhouse to grow plants year round.
A tightly sealed and insulated greenhouse with high light transmission is desirable for year-round vegetables and flowers (especially in northern climates). Remember, greenhouses are designed to store heat from the sun and create a warmer environment inside of them, so use in the summer in most areas would be limited at best. A greenhouse with an evaporative cooling system is recommended to keep temperatures at a minimum when it is hot outdoors.






VIEW A COMPARISON OF THE GREENHOUSES WE OFFER


3. How elaborate do you want the greenhouse to be?
If you are just starting seedlings or wintering over a few plants and are looking for the least expensive option to do so, you should consider the FlowerHouseand Little Greenhouse. If you want your greenhouse to be a focal point as well as functional, the Sunshine and Cross Country greenhouses are among our most attractive structures. The Cape Cod and Cottage series of the Cross Country are available with a combination of glass and polycarbonate providing both beauty and function.


4. Is a building permit required?
Check local ordinances for required setbacks from property lines, design requirements, and other requirements. Call your local building department. Some hobby greenhouses may not need a permit, but it is a good idea to check anyway.



Selecting a Site for Your Greenhouse


Choosing the right site for your greenhouse will not only determine how well it works as a greenhouse, but how much you will enjoy it. There are several factors to consider in choosing your site.




1. Sunlight
If the greenhouse is going to be used primarily for starting seeds and transplants or plant propagation in the summer, place it in partial shade to minimize heat buildup. You can use a shade cloth to control the amount of sunlight reaching the interior if a partially shaded site is not available. If the greenhouse will be used for growing in late fall and winter, or growing plants to maturity, it will need maximum exposure to the sun. It should receive a minimum of 6 hours of direct sunlight everyday. It is best to position the greenhouse with the ends facing east and west. This will provide more heat gain from the sun during the winter and create less shadowing in the greenhouse. If the southern exposure is restricted, but open to the east, southeast, southwest, or west, turn the greenhouse to the winter sun. Remember the difference in sun angles from summer to winter (the sun is much lower in the winter).





Sometimes a shade tree can be an advantage, providing some shade for the greenhouse during the hot summer and letting the sun in after losing its leaves in the fall. The problem with overhanging trees is one of falling branches that can damage your greenhouse.


2. Accessibility
You want your greenhouse to be easily used. A good site should be sheltered from high winds and easily accessible from your home and garden. Remember the need to move soil, plants, fertilizer, and yourself to and from the greenhouse. Access to utilities such as electricity and water are important requirements to remember also when selecting your site.


3. Weather
Many regions have chronic weather problems such as heavy rain, snow, and/or strong winds. Heavy rains may cause drainage problems in and around the greenhouse. To avoid standing water, choose a spot on high well-drained ground or install a drainage system before the greenhouse is erected. Snow is usually not a problem as long as you provide adequate insulation and heating. Strong winds can be a real problem. In cold weather, winds blowing over a greenhouse can drain it of its interior heat escalating energy costs. Windbreaks are your most effective weapon. A windbreak is an obstacle that "breaks" up the force of the wind. Trees, shrubs, fences, and other structures can all be effective windbreaks. Remember that a windbreak can also obstruct light. Try to locate one where it will block the least amount of light.

4. Ease of construction and maintenance
A level, well drained site will obviously be easier to work with and maintain than a low, swampy, or sloped area. It is also a good idea to locate your greenhouse away from children's play areas.



What's the Best Material for Greenhouses?


There really is no best material for a greenhouse. It is hard to know what's best when there are so many different materials used to make greenhouses. Aluminum, galvanized steel, wood, PVC, glass, fiberglass, polycarbonate, polyethylene, etc. They all have their place in greenhouse construction. Your needs and budget will determine which is best for you.

2015年10月30日星期五

How to identify the quality of poly carbonate solar panels good enough?

How to choose solar panels? How to identify solar panels is good enough?

Selection of inexpensive but high-quality PC sun panels, sun panels for users is critical, you may not necessarily be appropriate, cheaper is not necessarily the best.

Let me explain the reason:

1, high-quality import pc panel means high price. Because they are made of imported raw materials to produce new poly carbonate, thermoplastic machine for solar panels and technical requirements are very high.

2, We all know that UV coated sun panels solar panels can increase service life. But the   prices are expensive. here is the thing we need to considering about the UV: thicker and using time. Since UV coating materials are expensive (several hundred thousand dollars per ton), low-grade film solar panels although India "coated with UV", in fact there is no anti-ultraviolet UV coating.

3, Surface anti-droplet plastic sheet make things easier in greenhouse applying. Plus a PC sunshine board anti Dettol process is generally used in greenhouses, coz modern greenhouse, especially the high degree of difficulty of soilless culture, the use of solar panels anti Dettol process enables PC sunshine board surface layer of fog film, not direct formation of water droplets, dropping damage cultivated flowers or plants.

4, the complex structure of solar panels price good quality. Take a simple rice-shaped solar panels, we can do rice fonts PC sun panels of 40mm, these PC sunshine plate by a plurality of stable triangular structures can enhance the structural strength of solar panels, effectively resist typhoons natural disaster. Say that the U-shaped lock plate (standing seam U plate), these PC sun board with 100% leak-proof dust-proof design, because of its excellent design has a strong stability, can reduce the input support system, Some places do not even need support.

Pls abandon the inferior PC plastic sheet

1, the number of impurities or air bubbles was caused by a variety of reasons: A low-end machinery and equipment backwardness B processing technical imperfections inside how much is one of the main raw material of recycled materials C (eg more or larger bubbles and particles, Description is poor raw materials, recycled materials and solar panels luminance bad yellow or blue.

Sunshine board as a new plastic materials, has many functions, the majority of customers are also likely to have a first contact, they may not understand what the pc sheet is? 

they called hollow sun board board either, and now the market there are many quality PC sun panels, to meet different customer needs, but on the plate, because of different quality, a lot of manufacturers and merchants are shoddy, so many grades of basic sun panels on your eyes, we probably consumer market according to the PC sunshine board is divided into 5-year, 10-year warranty, but many manufacturers in order to achieve lower prices, the quality just become poor, and you can see in China domestic market. They also sold as 10 years.

More information, contact
Yanley
cell: +86 13632269575
mail: waimao3@chinagwx.com