Ⅰ. Types of Engineering Plastic Sheets
Yiheda commonly uses four types of engineering plastic sheets: acrylic sheet (PMMA), polycarbonate sheet (PC), polyvinyl chloride sheet (PVC), and aluminum-plastic composite sheet, of which the first three are plastic sheets.
Ⅱ. Features
1. Acrylic sheet (PMMA)
Introduction |
Acrylic is also known as PMMA or plexiglass, with the chemical name polymethyl methacrylate. It is polymerized from methyl methacrylate (PMMA) monomers. All the acrylic sheets sold by our company are cast acrylic sheets. |
Density |
1.15~1.2g/cm³ |
Light Transmittance |
Over 92% |
Operating Temperature |
-30℃~60℃ |
Main Features |
- Excellent transparency: With crystal-like transparency, it is known as "plastic crystal," with a light transmittance of over 92%, providing soft light and clear vision. |
Applications |
With excellent light transmittance, diverse colors and surface textures, good plasticity, and long lifespan, it is widely used in industries such as instrument parts, automotive lights, optical lenses, and transparent pipelines. |
2. Polycarbonate sheet (PC)
Introduction |
PC sheet, also known as polycarbonate sheet or Capron sheet, is an engineering plastic with excellent comprehensive properties. It has outstanding physical, mechanical, electrical, and thermal properties, and is renowned as the "King of Transparent Plastics." |
Density |
1.2g/cm³ |
Light Transmittance |
85%~92% |
Operating Temperature |
-40℃~95℃ |
Main Features |
- Impact resistance: Its impact strength is 250-300 times that of ordinary glass, 30 times that of acrylic sheets of the same thickness, and 10-20 times that of tempered glass. It is known as "unbreakable glass" and "sounding steel." |
Applications |
Suitable for environments requiring high impact resistance, sound insulation, and some degree of thermal insulation. It is widely used for protective covers, machine guards, and sound barriers. |
3. Polyvinyl chloride board (PVC)
Introduction |
PVC, also known as polyvinyl chloride, is naturally a pale yellow, semi-transparent granular material with a glossy finish. It can be classified into PVC transparent sheets and opaque PVC sheets. Currently, our company only supplies PVC transparent sheets, which have a slight blue-purple tint. |
Density |
1.38~1.4g/cm³ |
Light Transmittance |
Above 80% |
Operating Temperature |
-15°C~60°C |
Main Features |
- Flame Retardancy: PVC has a flame retardant value above 40, does not self-ignite, and does not promote combustion. It burns when in contact with flames but extinguishes immediately once the flame is removed. |
Applications |
Suitable for environments where high light transmittance is not required, but corrosion resistance, flame retardancy, and various processing needs are important. It is widely used in protective covers, interior parts, drinking water tanks, liquid level displays, and more. |
4. Aluminum-plastic composite panel
Introduction |
Aluminum-plastic composite panels are made of multiple layers of materials. The upper and lower layers are high-purity aluminum alloy plates, and the middle layer is a non-toxic, low-density polyethylene (PE) core. The front surface is also covered with a protective film. |
Density |
The weight is approximately 4.0~5.5 kg per square meter (5mm thickness). |
Light Transmittance |
/ |
Operating Temperature |
-40°C~70°C |
Main Features |
- Flame Retardancy: The core of the aluminum-plastic panel is made of flame-retardant PE plastic, and both sides are covered by highly non-combustible aluminum layers. Therefore, it is a safe fire-resistant material that meets building code fire resistance requirements. |
Applications |
Suitable for harsh environments where light transmission is not required. Aluminum-plastic panels can generally replace other materials and offer a more economical solution. |
5. Characteristics and common surface hardness of acrylic, PVC and PC sheets
Property | Acrylic (PMMA) | Polycarbonate (PC) | PVC |
---|---|---|---|
Surface Hardness | Hardness can reach 4H; hardened coatings can reach 4-6H. | N/A | N/A |
Light Transmittance | Up to 93% | Approximately 85-90% | Over 80% |
Impact Resistance | 30 times that of ordinary glass; 2-20 times that of tempered glass | Best impact resistance (250-300 times that of ordinary glass) | More brittle than both acrylic and PC |
Flame Resistance | Generally flammable; flame-retardant versions are available | Difficult to ignite, self-extinguishing | Best flame resistance (UL94 V-0 grade) |
Cutting Tolerance | ±0.3mm for lengths and widths <1000mm; ±0.5mm for lengths and widths >1000mm | N/A | N/A |
Price per kg | Higher than PVC, lower than PC | Highest | Lowest |
Ⅲ. Physical and Chemical Properties
1. Acrylic sheet (PMMA)
Properties |
Unit |
Numerical |
|
MECHANICA |
SPECIFIC GRAVITY |
|
1.19-1.2 |
ROCKWELL HARDNESS |
Kg/cm2 |
M-100 |
|
SHEARSTRENGTH |
Kg/cm2 |
630 |
|
RUPTURE |
Kg/cm2 |
1050 |
|
TENSILESTRENGTH |
Kg/cm2 |
760 |
|
YIELD |
Kg/cm2 |
1260 |
|
IMPACTSTRENGTH |
Cal/Gr°C |
0.35 |
|
THERMAL |
SPECIFICHEAT |
Cal/xee/cm/°C/cm |
|
THERMALSEFORMATIONTEMP |
℃ |
100 |
|
MAXIMUM CONTINUOUS SERVICE TEMPERATURE |
℃ |
85 |
|
THERMALFORMINGTEMP |
℃ |
140-180 |
|
COEFFICIENTOFLINERTHERMALEXPANSION |
Cm/cm/°C |
6x10-5 |
|
OPTICAL |
LIGHTTRANSMITTANCE |
% |
93 |
REFRACTIVEINDEX |
|
1.49 |
|
ELECTRICAL |
DIELICTRICSTRENGTH |
KV/mm |
20 |
SURFACERESISTIVETY |
Ohm |
≥1016 |
|
MISCELLANEOUS |
WATER(24HRS)ABSORPTION |
% |
0.3 |
BURNING RATE |
IN/MIN |
1.3 |
Chemical |
Resistance |
Chemical |
Resistance |
Chemical |
Resistance |
Chemical |
Resistance |
Chemical |
Resistance |
Concentrated hydrochloricacid |
△ |
Methanol |
△ |
Butanone |
△ |
Chlorobenzene |
X |
Acetonitrile |
x |
Hydrochloricacid |
O |
Ethanol |
△ |
Methylisobutylketone |
x |
Gasoline |
|
Acrylonitrile |
x |
Concentrated hydrochloricacid |
X |
Isopropylalcohol |
△ |
Cyclohexanone |
X |
Kerosene |
0 |
Twohaveamine |
0 |
Sulfuricacid |
0 |
Butanol |
△ |
Ethylormate |
X |
Turpentine |
0 |
Dimethylformami |
X |
Concentratednitricacid |
X |
Denaturedalcohol |
△ |
Ethylacetate |
X |
Solventnaphtha |
0 |
Aniline |
X |
Aceticacid |
0 |
Benzenecarbonicacid |
X |
Ethylacetate |
x |
Mineral oil |
0 |
Saltwater |
O |
Glacialaceticacid |
X |
Formaldehyde |
0 |
Propylacetate |
X |
Olive oil |
0 |
Sea |
0 |
Aceticacid |
0 |
Acetaldehyde |
X |
Butylacetate |
X |
Transformer oil |
0 |
Soapywater |
O |
Formicacid |
X |
Benzenecarbonicacid |
△ |
Dibutylphthalate |
0 |
Cotton oil |
0 |
Peroxide |
0 |
Phenol |
X |
Meathyletheri |
△ |
Dioctylphthalate |
0 |
urfuran |
X |
Citric acid |
0 |
sodiumhydroxide |
0 |
Ether |
△ |
Methylmethacrylate |
X |
Furfuralalalcchol |
X |
Detergent |
0 |
Aquaammonia |
0 |
Isopropyl |
X |
Benzene |
X |
Furfuryalalcchol |
x |
Lacquer thinner |
X |
Ethane |
0 |
Propylenechloride |
△ |
oluene |
X |
Tetrahydrofuran |
x |
|
|
|
0 |
Dioxane |
X |
Xylene |
X |
Nitromethane |
X |
|
|
|
0 |
Fibrsolvent |
△ |
Chloroform |
X |
Nitroethane |
X |
|
|
Medicinalkane |
0 |
Acetone |
X |
Carbontetrachloride |
△ |
Nitrobenzene |
x |
|
|
Note: O-No corrosion X-No resistance (short-term or rapid corrosion will cause product damage) △-Limited resistance (if corrosion continues, it will cause product damage) |
2. Polycarbonate Sheet (PC)
Properties |
Unit |
Numerical |
|
MECHANICA |
SPECIFIC GRAVITY |
- |
1.2 |
ROCKWELL HARDNESS |
Kg/cm2 |
M-77 |
|
FLEXURAL STRENGTH |
Kg/cm2 |
1000 |
|
IMPACT STRENGTH |
J/m |
850 |
|
TENSILES TRENGTH |
Kg/cm2 |
>600 |
|
MODULUS OF ELASTICITY |
MPa |
2400 |
|
TENSILE STRESS AT BREAK |
MPa |
>65 |
|
ELONGATION AT BREAK |
% |
100% |
|
THERMAL |
SPECIFIC HEAT |
KJ/Kg |
1.17 |
THERMAL SEFORMATION TEMP |
℃ |
140 |
|
SERVICE TEMPERATURE |
℃ |
-40~+120 |
|
HEAT CONDUCTIVITY |
W/m2°C |
2.3~3.9 |
|
COEFFICIENT OF THERMAL EXPANSION |
Mm/mC |
0.065 |
|
OPTICAL |
LIGHT TRANSMITTANCE |
% |
88 |
MISCELLA NE OUS |
EFFECT OF SOUNDPROOF |
dB |
-20 |
WATER(24HRS) ABSORPTION |
% |
0.2 |
|
Note: 6.0mm PC board test data |
Chemical Name |
Suitability |
Chemical Name |
Suitability |
Chemical Name |
Suitability |
Chemical Name |
Suitability |
Chemical Name |
Suitability |
Acetaldehyde |
X |
Ammonium sulfide |
X |
Blood and plasma |
O |
Carbon disulfide |
X |
Cod liver oil |
O |
Acetic acid (10%) |
O |
Amyl acetate |
X |
Borax |
O |
Carbon monoxide |
O |
Coffee |
△ |
Acetic acid (conc.) |
△ |
Pentanol |
△ |
Boric acid |
O |
Carbon tetrachloride |
X |
Cooking oil |
O |
Acetone |
X |
Aniline |
X |
Brake fluid |
X |
Castor oil |
O |
Copper sulfate (sat.) |
O |
Acetylene |
O |
Antimony trichloride (sat.) |
O |
Bromine |
X |
Tomato sauce |
O |
Cresol |
X |
Acrylonitrile |
X |
Aqua regia (HCl₂SO₄=3:1) |
△ |
Bromobenzene |
X |
Potassium hydroxide |
X |
Copper chloride (sat.) |
O |
Allspice powder |
X |
Arsenic acid (20%) |
O |
Butane |
O |
Sodium hydroxide |
X |
Cuprous chloride (sat.) |
O |
Allyl alcohol |
△ |
Car wax |
△ |
Butter |
O |
Chlorine (dry) |
△ |
Cyclohexylamine |
O |
Aluminum ammonium sulfate |
O |
Baby lotion |
O |
Butyl acetate |
X |
Chlorine (moist) |
X |
Cyclohexanol |
△ |
Aluminum oxide (sat.) |
O |
Animal fat |
O |
Butanol |
O |
Chlorobenzene |
X |
Cyclohexanone |
X |
Aluminum oxalate |
O |
Barium chloride |
O |
Butylene glycol |
O |
Chloroform |
X |
Naphthene |
O |
Aluminum sulfate (sat.) |
O |
Battery electrolyte |
O |
Butyric acid |
X |
Chocolate |
O |
Cleaner |
△ or O |
Ammonia gas |
X |
Beer |
O |
Calcium chloride (sat.) |
O |
Alum (sat.) |
O |
Naphtha |
X |
Ammonium hydroxide |
X |
Beet soup |
O |
Calcium hypochlorite |
O |
Chromium trioxide (20%) |
O |
Kerosene |
△ |
Ammonium carbonate |
△ |
Benzaldehyde |
X |
Calcium nitrate |
O |
Cinnamon |
O |
Gasoline |
△ |
Ammonium chloride |
O |
Benzene |
X |
Calcium soap fat |
O |
Citric acid (10%) |
O |
Paint |
X |
Ammonium fluoride |
X |
Benzoic acid |
X |
Camphor oil |
X |
Clove |
X |
|
|
Ammonium hydroxide |
X |
Benzyl alcohol |
X |
Carbolic acid |
X |
Coal gas |
O |
|
|
Ammonium nitrate |
O |
Betadine |
O |
Carbon sulfite |
X |
Coca-Cola |
△ |
|
|
Ammonium sulfate (sat.) |
O |
Bleach (sodium hypochlorite) |
O |
Carbon dioxide (moist) |
O |
Cocoa drink |
△ |
|
|
Notes: O – Non-corrosive X – Non-resistant (damage occurs in a short time or due to rapid corrosion) △ – Limited resistance (prolonged corrosion can lead to product damage) |
3. Polyvinyl chloride sheet (PVC)
Properties |
Unit |
Numerical |
|
MECHANICA |
SPECIFIC GRAVITY |
|
1.45 |
ROCKWELL HARDNESS |
Kg/cm2 |
82 |
|
FLEXURAL STRENGTH |
Kg/cm2 |
765 |
|
TENSILES TRENGTH |
Kg/cm2 |
612 |
|
MODULUS OF ELASTICITY |
MPa |
3000 |
|
TENSILE STRESS AT BREAK |
MPa |
90 |
|
ELONGATION AT BREAK |
% |
|
|
THERMAL |
THERMAL SEFORMATION TEMP |
℃ |
98 |
TEMPERATURE RESISTANCE (CONTINUOUS) |
℃ |
60 |
|
TEMPERATURE RESISTANCE (SHORT TIME) |
℃ |
65 |
|
MELTING POINT |
℃ |
120 |
|
OPTICAL |
LIGHT TRANSMITTANCE |
% |
80 |
MISCELLANEOUS |
STATIC FRICTION COEFFICIENT |
|
0.5 |
WATER(24HRS) ABSORPTION |
% |
0.12 |
|
Note: PVC transparent board test data |
Chemical Name |
Suitability |
Chemical Name |
Suitability |
Chemical Name |
Suitability |
Chemical Name |
Suitability |
Chemical Name |
Suitability |
Sulfuric acid (10%) |
O |
Chlorinated solvents |
X |
Benzaldehyde |
X |
Diacetone alcohol |
X |
Turbine oil |
△ |
Sulfuric acid (70%) |
X |
Sodium chloride |
△ |
Xylene |
X |
Dimethylformamide |
O |
Brake oil |
△ |
Hydrochloric acid (10%) |
△ |
Calcium chloride |
△ |
Dibutyl phthalate |
O |
Dioxane |
X |
Fuel oil |
O |
Acetic acid (50%) |
O |
Barium chloride |
△ |
Acetylene |
O |
Ethyl acrylate |
O |
Petroleum |
△ |
Nitric acid (30%) |
△ |
Aluminum chloride |
△ |
Propane |
△ |
Ethyl cellulose |
O |
Lubricating oil |
△ |
Nitric acid (60%) |
X |
Copper chloride |
△ |
Butane |
O |
Ethylene dichloride |
△ |
Mineral oil |
△ |
Carbonic acid |
△ |
Mercuric chloride |
O |
Hexane |
X |
Phosphorus chloride |
X |
Kerosene |
X |
Oxalic acid |
X |
Ammonium chloride |
△ |
Hexanal |
X |
Potassium cyanide |
△ |
Turpentine |
△ |
Sodium hydroxide |
X |
Liquid ammonia |
X |
Acetone |
X |
Silicone oil |
X |
Tar |
X |
Calcium hydroxide |
X |
Ammonium hydroxide |
X |
Propylene |
X |
Silicon tetrachloride |
O |
Oleic acid |
△ |
Potassium hydroxide |
△ |
Ammonia gas |
X |
Cyclohexanone |
△ |
Air |
O |
Water-lubricant emulsion |
△ |
Barium hydroxide |
△ |
Ammonium nitrate |
△ |
Cyclohexanol |
△ |
Hydrogen |
△ |
Bleach |
O |
Methanol |
X |
Ammonium nitrite |
O |
Acetamide |
O |
Helium |
△ |
Salad oil |
△ |
Ethanol |
△ |
Ammonium phosphate |
△ |
Aluminum bromide |
O |
Liquefied petroleum gas |
O |
Beer |
△ |
Propanol |
O |
Mercury |
△ |
Arsenic acid |
O |
Steam |
X |
Citric acid |
O |
Butanol |
X |
Benzene |
X |
Butyl acetate |
O |
Hydrogen peroxide (30%) |
O |
Vegetable oil |
△ |
Chlorine |
△ |
Phenol |
△ |
Calcium bisulfite |
X |
Sodium peroxide |
△ |
Fatty acid |
△ |
Liquid chlorine |
X |
Benzene ring |
△ |
Acetate solvent |
X |
Gasoline |
X |
Milk |
O |
Chloroform |
X |
Aniline |
X |
Dibutyl ether |
X |
Light gasoline |
△ |
Soap solution |
O |
Notes: O – Fully suitable X – Not suitable △ – Conditionally suitable (suitable under specific conditions) |
Ⅳ. Installation Methods of Profile Plate
1. Angle code fixation
The plate needs to be punched, and the hole position needs to correspond to the screw hole of the extruded angle seat, and then installed in one piece, which is simple and convenient.
2. Flat fixation
The plate needs to be punched, installed with the profile T-nut, and laid flat on the profile frame, which is easy to install and beautiful in appearance.
3. Panel pressure strip (U-shaped groove strip) fixation
The plate does not need additional processing. First place the plate in the slot, and then install and fix it with the corresponding pressure strip. It is easy to install, the plate can be removable, and there is a range requirement for the thickness of the plate (depending on the pressure strip model 3~5mm)
4. Glass glue fixation
The plate does not need additional processing. Directly place the plate in the aluminum profile slot, and then apply glass glue to fix it. The installation is stable and cannot be removed.
5. Interval fixing block fixation
The plate needs to be punched, and the installation method is similar to the angle code fixation. The plate fixing hole position can be customized.
For detailed installation instructions, see: Profile plate fixing method example (yhdfa.com)
V. Antistatic Plate
Antistatic plate requirements:
The surface resistance of our antistatic plate is 105~108 Ω;
● Antistatic performance is not easily affected by humidity and temperature, and is resistant to salt spray;
● Beautiful appearance, excellent light transmittance, UV resistance, and low gas volatility;
● Excellent surface hardness and resistance to chemical solvent erosion, and can withstand alcohol and other wipes;
● Excellent coating durability, high mechanical strength, and excellent processing performance;
● Does not damage the physical properties of the substrate (acrylic, PC, PVC).
Precautions for use:
● Antistatic sheets should not be placed in a high temperature environment for a long time, which will cause the antistatic effect to deteriorate;
● The board surface is prohibited from contacting strong acids, strong alkalis and corrosive organic solvents;
● When processing antistatic sheets, be careful not to scratch or bump the surface of the sheet to avoid damaging the surface coating and causing the sheet to lose its antistatic effect;
● Antistatic sheets cannot be hot-bent, which will affect the antistatic effect;
● When bonding antistatic sheets, the surface to be bonded should be ground off by about 0.5mm in advance, and then bonded with special glue. At present, our company's antistatic sheet products: antistatic acrylic sheet, antistatic PC sheet, antistatic PVC sheet.
Antistatic treatment method: All are surface treatment, spray antistatic agent on the surface of the sheet.
Storage and handling matters:
●Store the board at room temperature and in a ventilated and dry environment. Do not expose the board directly to sunlight, heat sources or humidity;
●Do not remove the protective film before using the board, because daily dust and dirt will adhere to the surface of the board due to static electricity, and the protective film also protects the board from wear and scratches;
●Avoid warping. The board should be stored naturally and flat. If it needs to be stored vertically, it is best to store the board at a small angle and place a support underneath.
Find your suitable engineering plastic sheets for your project today! Contact us for expert advice and customized solutions.