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Guangdong Shunde Polygao Plastic Industrial Co., Ltd.

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Plastic Polycarbonate Sheet 3mm Crystal Polycarbonate Sheet Monolithic Diamond Polycarbonate Sheet

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Brand Name :	Polygao
Model Number :	Sun Sheets & PC Embossed Sheets
Certification :	ISO9001:2008
Price :	CN¥32.47/square meters 500-999 square meters
Payment Terms :	30% TT deposit ,70% Balance before shipment
Supply Ability :	3-5days after deposit

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Plastic Polycarbonate Sheet 3mm Crystal Polycarbonate Sheet Monolithic Diamond Polycarbonate Sheet

Factory Price Plastic PC Polycarbonate 3mm Crystal PC Board Panel Monolithic Polycarbonate Diamond Polycarbonate Sheet

Does polycarbonate turn yellow?

Polycarbonate can turn yellow over time. Here are the main reasons:

Exposure to ultraviolet (UV) light: Prolonged exposure to sunlight or strong artificial UV light can cause the polymer chains in polycarbonate to break down and undergo chemical changes, leading to yellowing. This is a common issue when polycarbonate is used in outdoor applications without proper UV protection.
Thermal degradation: When polycarbonate is subjected to high temperatures for an extended period, it can undergo thermal degradation. This can occur during processing or in applications where the material is exposed to heat sources. Thermal degradation can cause the formation of chromophores, which are responsible for the yellow color.
Oxidation: Contact with oxygen and other oxidizing agents can cause oxidation of the polycarbonate material. Oxidation reactions can lead to the formation of yellow - colored degradation products. Factors such as high humidity and the presence of certain chemicals can accelerate the oxidation process.
Residual stress: Internal stresses within the polycarbonate material, which may be introduced during manufacturing or processing, can affect its stability. Over time, these stresses can cause the material to degrade and yellow.

However, it's important to note that not all polycarbonate will turn yellow. Many polycarbonate products are formulated with additives such as UV stabilizers, antioxidants, and heat stabilizers to improve their resistance to yellowing. These additives can significantly extend the lifespan and color stability of polycarbonate in various applications.

How can I prevent polycarbonate from turning yellow?

Does the color of polycarbonate change immediately after being exposed to certain conditions?

Are there any specific types of polycarbonate that are less likely to turn yellow?

Plastic Polycarbonate Sheet 3mm Crystal Polycarbonate Sheet Monolithic Diamond Polycarbonate Sheet

Products Description

Embossed Polycarbonate Sheet Specifications:
Thickness	2-10mm
Maximum width	2,100mm
Length	no limit (according to client’s requirements)
Specific gravity	1.2 g/cm3
Colors	clear, blue, green, opal, brown, bronze, etc
Package	PE film on both sides of pc plastic sheet
Embossed Polycarbonate Sheet Techniacal Data:
Impact strength	850J/m
Light transmission	80%-90% for different thickness of clear color
UV resistance	50μm UV layer, can filter 99% ultraviolet radiation in sunlight
Coefficient of thermal expansion	0.065 mm/m°c
Service temperature	-40°c to 120°c
Heat conductivity	2.3-3.9 W/m2 °c
Tensile strength	>60N/mm2
Flexural strength	100N/mm2
Tensile street at break	>65mPa
Heat deflection temperature	140°c
Soundproof index	4mm thickness--27dB,5mm--28dB,6mm--29dB

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FAQ

1.Whats the quality assurance you provided and how do you control quality ?
1)Established a procedure to check products at all stages of the manufacturing process;Besides, we also developed a procedure which identifies the inspection and test status of all items at all stages of the manufacturing process.

2)100% inspection in assembly lines.

2.How many different kinds of PC sheet you can product?
There are the following products: Glittering Polycarbonate Sheet,Multi-wall Structure Polycarbonate Sheet,Greenhouse Polycarbonate Sheet, General Polycarbonate Solid Sheet,Advertising Polycarbonate Sheet, Polycarbonate Embossed Sheet, Polycarbonate Frosted Sheet, Soundproof Polycarbonate Sheet, Greenhouse Polycarbonate Sheet etc.

3.We are in very high temperature country, twin wall polypropylene sheet can support?
A: Yes, Polycarbonate sheet Temperature Resistance can be:40 ~+120 degree centigrade

4.Do you take special orders ?
Yes , We accept customized products.

5. How to identify the UV side of the sheet?
A: The UV side is the side protected with the printed masking film. To avoid installing the sheet at the wrong side which will void the warranty, please ensure only to remove the masking film after the sheet has been installed.

6. How do I know that a twin wall polypropylene sheet has UV layer?
A: You can’t see the UV layer with the naked eyes. A laboratory test is required to prove this. Some international labs have this facility. Usually UV side layer will more thicker than the down side.

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