If the car is like a person, if the cleaning of the car body surface is for others, then the cleaning of the car interior is for the sake of your health. Since the interior of the car has many different materials, textures and surfaces, although the space is not large, the dead angle is more likely to be contaminated, and there are many parts that need to be cleaned and maintained. If the car is like a person, if the cleaning of the car body surface is for others, then the cleaning of the car interior is for the sake of your health. Since the interior of the car has many different materials, textures and surfaces, although the space is not large, the dead angle is more likely to be contaminated, and there are many parts that need to be cleaned and maintained. When cleaning, be careful to use different cleaning agents and auxiliary tools according to different parts. How to clean and maintain the car interior? The first step: vacuuming and cleaning up the car interior: the first step of cleaning should first remove the dust inside the car, sweep away the large dirt, and then use the vacuum cleaner to suck the dust in the gap between the carpet and the seat. Step 2: Cleaning the control room: The instrument panel and steering wheel are mostly plastic and leather products, which are easy to adhere to dust, but it is also convenient to clean. It must be noted that because the instrument panel is exposed to sunlight for a long time (detailed picture quote), it is easy to age and embrittlement, so it is best to choose a good quality surface wax coating, then wipe it with a clean cotton cloth, so that it will be good. Protect the instrument panel. Step 3: Clean the air conditioning duct: Remove the air conditioning air outlet, insert the thin tube of the air conditioner cleaning agent into the air conditioning duct, and spray the appropriate amount of air conditioner cleaning agent. Then turn off the air conditioning air outlet, turn on the air conditioning inner circulation, start the engine, and idle for about 10 minutes. Clean the air conditioning filter at the same time. The fourth step: the cleaning of the seat: 1, the fabric fabric seat: the seat of the clean flannel or other fabric must be careful. Spray the high-efficiency foam cleaning solution to the dirt and leave it for a while. After the foam is completely blotted, wipe it repeatedly with a clean dry towel until the stain is removed. 2, leather seat: usually clean with a strong alkaline cleaning agent, such as soapy water, wash and wipe with a cotton tissue. However, since the leather and leather of the leather chair are frequently washed with water, it is prone to cracks and affects the service life. Therefore, it is recommended to purchase special cleaning products such as leather cream and leather care cleaner for cleaning. Step 5: Cleaning the roof of the car: The roof canopy is generally free from other dirt, and only the high-efficiency foam cleaning solution can be used to clean the roof. If there is dirt that is difficult to clean, use a toothbrush or other tool to assist in cleaning. Step 6: Wipe the window, door, foot pad, foot pedal, etc.: This only needs to be cleaned with the corresponding cleaning agent, and the process is relatively simple. Step 7: Spray air freshener: In the end, this process will vary from person to person. If you don't like the smell of air freshener, you don't have to. However, air fresheners do not have the effect of anti-virus sterilization.
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At present, the five most commonly used Thermosetting Plastics in various fields are PU, epoxy resin (EP), silicone, unsaturated polyester (UP) and phenolic resin (PF).
Thermosetting Plastic has the following advantages:
Thermosetting plastic has a large rigidity and is extremely elastic and plastic deformation.The temperature has little influence on stiffness, and under the same load and temperature, the creep variable is much smaller than thermoplastic.Good heat resistance;The plastic parts are quite stable when heated.The size of the plastic parts is good. Thermosetting plastic is less affected by temperature and humidity, and Thermosetting plastic can be reduced after forming, making Thermosetting plastic easy to make plastic parts with high precision than thermoplastic ruler.Excellent electrical performance.Resistance to arc and voltage, etc.Good corrosion resistance, weak acid, weak base and organic solvents;Good processability, can be processed by various molding methods and other advantages.
Most thermosetting plastics have the following characteristics:
(1) excellent chemical resistance.
(2) it is usually brittle hard plastic, which can be filled with various fillers to form composite materials.
(3) compared with thermoplastic resin, the molding cycle is longer.
(4) all kinds of modification can be carried out, depending on the combination of resin, crosslinking agent, additive, etc., which can form composite materials with different properties.
(5) good heat resistance, the use of high temperature, Tg of thermosetting polyimide (PI) is about 350 ℃.
(6) can be used as raw materials to meet the application of various fields.Only 5% is used as injection molding material.
(7) the waste is generally used as filler after pulverization, which is difficult to recycle and pollutes the environment.
Due to the high heat resistance of thermosetting plastic, good dimensional stability, good line performance, anti-aging properties are better than thermoplastic plastic and low price, so it is widely used.The disadvantage is that the mechanical properties are poor and need to be enhanced.
It is mainly composed of thermosetting resins, which are involved in various necessary additives to form the plastic of the products.In the process of manufacturing or forming, the liquid will be liquid, which will not melt after curing or melt or soften again.Common thermosetting plastics include phenolic plastic, epoxy plastic, amino plastic, unsaturated polyester, alkyd plastics, etc.Thermosetting plastic and thermoplastic plastics constitute two major components of synthetic plastic.
Thermosetting plastic heating for the first time can soften the flow, heated to a certain temperature, react a crosslinking reaction and curing hardens, this change is irreversible, since then, heating again, already no longer soft flow.It is the use of this characteristic to make the molding process, using the plasticization flow of the initial heating, filling the cavity under pressure, and solidifying to become the product that determines the shape and size.
Thermosetting plastic is distinguished by a chemical reaction that is hardened by heating, pressing or adding the hardener at a definite temperature.After hardening, plastic chemical structure changes, the texture is hard, dissolves in the solvent, heating also no longer softens, if the temperature is too high then decompose.In thermoplastic plastic, the chains of resin molecules are linear or branched, and there is not any chemical bond between the molecular chains, which soften the flow when heated.The process of cooling and hardening is a physical change.
Formaldehyde cross linked plastic includes phenolic plastic, amino plastic (such as urea-formaldehyde - melamine - formaldehyde, etc.).Other cross linked types of plastic include unsaturated polyester, epoxy resin, prevalence, diallyl ester resin, etc.
The commonly used thermosetting plastics are phenolic resin, urea-formaldehyde resin, melamine resin, unsaturated polyester resin, epoxy resin, silicone resin, polyurethane, etc.
Production:Phenolic resin PF (Bakelite sheet)
Phenolic resin is a part of the longest plastic varieties in history, commonly known as bakelite or electric wood, and the appearance is yellowish or black, which is the typical representative of thermosetting plastic.Bakelite sheet molding often use a variety of filling materials, according to different filling materials used, the product performance is also different, Bakelite sheet as molding material, mainly used in the field of need heat resistance, but also as a bonding agent used in plywood, grinding wheel and the brake pads.
Thermosetting Plastics
Thermosetting Plastic,Thermoset Molding Plastic,Mould Thermosetting Plastic,Thermoplastic Type Plastic
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