There are many grades of PVC. The viscosity or K value commonly used in the industry indicates the average molecular weight (or average degree of polymerization) of PVC, that is, the length of the PVC molecular chain, which determines the grade of the resin and the corresponding processing parameters. The molecular weight of the resin is related to the physical and mechanical properties of the product.
PVC used to be the largest general-purpose plastic in the world, and it is widely used. It is widely used in construction materials, industrial products, daily necessities, floor leather, floor tiles, artificial leather, pipes, wires and cables, packaging films, bottles, foam materials, sealing materials, fibers, etc
SG3 (K-70, S1300): mostly used for soft products, hoses, wires and cables, films, shoe materials, toys, auto parts etc.
PVC RESIN SG3 has high purity, less fish eyes, easy to blister, high temperature resistance, insulation, soft product texture, etc. It is mainly used to produce soft products such as wires and cables, agricultural films, conveyor belts, and daily plastic products.
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The space between the top of the piston and the cylinder head after the piston reaches top dead center, where the fuel burns.
Compression Ratio
The total volume of the piston at the bottom dead center is divided by the total volume of the piston at top dead center (combustion chamber volume, the resulting value is called the compression ratio).
Connecting Rod
The connecting rod connecting the crankshaft and the piston in the engine.
Cooling System
The loop of coolant can be used to remove excess heat from the engine to prevent overheating of the system. Water-cooled engines include water jackets, water pumps, water tanks, and thermostats.
Crankcase
The lower part of the engine is where the crankshaft is running, including the lower part of the cylinder block and the oil pan.
Crankshaft
The main rotating mechanism of the engine, after the connecting rod is installed, can take up and down (reciprocating) movement of the connecting rod into a loop (rotational motion.
Crankshaft Gear
A gear or key gear mounted on the front end of a crankshaft, usually used to actuate a camshaft gear, chain, or toothed belt.
Cylinder Block
The basic structure of the engine, all engine accessories are installed on the engine, including the engine cylinder and crankcase the upper half.
Cylinder Head
The cover of the engine and the components that enclose the vapours include water jackets, valves and cooling fins.
Detonation
For the impact or explosion of the flame, in the combustion chamber of the spark ignition engine, because the compressed air-fuel mixture spontaneously ignites, some of the mixture of the Ng and Y U-ignited lamps are re-ignited (after ignition of the spark plug). ), and thus made a pop sound.
Displacement
In a certain loop operation of the engine, the ability to send all the air and mixture into all cylinders is also the volume that a piston can discharge from one stroke to another stroke.
Engine
A machine that converts thermal energy into mechanical energy: a device that burns fuel to produce mechanical power; it can sometimes be considered an engine.
Fan Belt
A belt driven by a crankshaft whose main purpose is to drive engine fans and pumps.
Float Level
In the carburetor buoy chamber, the buoy floats up against the needle valve and blocks the oil inlet so that the oil will no longer flow into the float chamber and the height of the oil surface.
Four-Stroke Cycle
Intake, compression, power, exhaust four strokes. Four strokes to adjust a complete loop.
Gasket
Made of paper, rubber sheet or copper sheet, placed between the two planes to enhance the sealing material.
Gear Lubricant
A lubricated gear oil, usually SAE 90 oil.
Heat-Control Valve
A thermostatically operated valve in the engine exhaust manifold can direct exhaust heat into the intake manifold before the engine reaches normal operating temperatures.
Knock
Metallic crashes with engine speed are usually caused by loose or worn bearings.
Main Bearing
Bearings that support the crankshaft in the engine.
Manifold Pressure
The pressure in the intake manifold when the turbocharger is operating.
Manifold Vacuum
Refers to the vacuum inside the intake manifold, which is the vacuum created by the cylinder during the intake stroke.
Oil Pan
Bits in the lower part of the engine: removable, and will be sealed by the axle box as a housing for the oil sump.
Oil filter (Oil filter)
A device that filters out dirt as it passes through.
Oil Pump
In the lubrication system, the oil can be forced from the oil pan to the engine moving parts.
Ping (Ping)
The detonation that occurs when the engine is accelerating is caused by too early ignition timing or too low fuel octane.
Piston
A moving part mounted in a cylinder that can accept or transmit power when the pressure changes. In terms of the engine, it refers to a circular machine that slides up and down in the cylinder and uses a connecting rod to force the crankshaft to rotate.
Piston Pin
A tubular metal block that connects pistons or connecting rods.
Piston Ring
There are two types of rings that break into the piston groove: the compression ring and the oil ring. The compression ring can be used to seal the compressed air in the combustion chamber; the oil ring is used to scrape excess oil from the cylinder.
Pressure Cap
A tank cap with a valve allows the cooling system to maintain a higher or more efficient temperature under pressure.
Radiator
In a cooling system, a device that removes hot air from the cooler, that is, a coolant that absorbs the engine's overheating and sends the low-temperature coolant to the engine.
Spark plug
A combination of two electrodes and an insulator provides a spark ignition component for the engine's steam engine.
Spark Test
A quick inspection method of the ignition system. First, close the metal end of the high-voltage wire to the gas letter cover, and then start the engine to check the spark.
Supercharger
In the air intake system of the engine, the pump that mixes the incoming air or air fuel pressure. This increases the amount of flammable fuel, while increasing engine power.
Thermostat
It is a thermostat device that usually contains a temperature-sensing element that opens or closes the flow of air, gas or liquid by expansion or contraction.
Turbocharger
A supercharger driven by the exhaust of an engine can typically increase horsepower by 25 to 30%.
Two-Stroke Cycle
The two stroke loop engine, fuel entry, compression, combustion and exhaust take place between the piston strokes.
Valve Clearance
In the OHC engine, the clearance between the rocker arm and the top of the valve stem. In valve trains, the gap between closed valves.
Valve Tming
The timing at which the valve opens or closes in conjunction with the piston position.
Valve Train
The engine's valve operation mechanism includes the components from the camshaft to the valve.
Vibration Damper
The device connected with the cranking crankshaft is used to counter the torsional vibration of the crankshaft (ie, the phenomenon that the crankshaft is twisted by the impact force of the cylinder ignition).
Wastegate
The control device in the turbocharger can limit the pressure increase to avoid damage to the engine and the pulley booster.
Water Jackets
Refers to the space between the cylinder block and the inner shell of the cylinder head, and the coolant circulates between them.
Water Pump
In the cooling system, the action of the water pump keeps the coolant circulating between the engine water jacket and the water tank.
PVC Resin is a kind of non-crystalline linear polymer compound. The larger the relative molecular mass, the higher the viscosity, the higher the molecular weight, and the higher the tensile strength, impact strength, and elastic modulus of the product, but the flow of the resin melt Decline in sex and plasticity. The viscosity number is usually used to indicate the molecular weight of the polymer, and the polymer model is divided
Automotive professional terminology
Combustion Chamber