The tense rhythm and unreasonable lifestyle seriously affect the mind and body of modern people. Among them, home feng shui also plays an accompaniment to our health. The pressure from the outside world is beyond our control, but whether or not to create a healthy feng shui for yourself depends on your mind. 1. The bed is located under the beam and column: the beam and column are indispensable to bear gravity in the building structure. But if the bed is placed under the beam and pillar, it is the "beam pressing ceiling" in Feng Shui taboo. Not to mention that it will adversely affect people's luck in all aspects, but just the extension of Liang Zhu's pressure, it is easy to make people frequently fatigued, or do not sleep soundly, or feel good sleep and wake up but still feel very tired. This situation is not conducive to rest, moving the bed position away will help sleep. If the space is limited and cannot be removed, you need to plan early during the decoration, use the ceiling to separate the beams, and use other decorative methods to change the visual impression of the column. 2. The bedroom is converted from a bathroom: This situation is usually more common in remodeled houses, just like the landlords who rent a group now, in order to rent as many houses as possible, their own bathroom is changed into a bedroom. However, in the bathroom system of modern buildings, upstairs and downstairs are all bathrooms. Living in such a remodeled bedroom, surrounded by the filthiness of the upstairs and downstairs toilets, can you rest? The converted house in the bathroom cannot live, everyone careful. 3. Improper decoration of the bedroom: the bedroom should be warm and comfortable. But some friends pursued visual effects too much when decorating, especially some young people, in order to show their individuality and aesthetic vision, use various colors to build up the feeling they want. As everyone knows, this situation is very unfavorable for healthy feng shui, especially in the bedroom, too rich colors, suppressed patterns, and uncomfortable ornaments may affect sleep. 4. The bed is close to the kitchen stove and faucet: the position of the bed is very important, and the position must be selected carefully when it is placed. If the bedroom is next to the kitchen, it is best to avoid the wall next to the kitchen when laying the bed. Because the faucet is too close, even if it is separated by a wall, it is inevitable that there is damp gas. For days, rheumatism and other diseases are easy to come to the door; and the fire of the stove is easy to cause high blood pressure or other blood gas disorders. 5. The bed is close to the toilet and bathroom facilities: we said that the head of the bed should lean against the wall, but not all walls are suitable for relying on. Close to the wall of the bathroom, the bed needs to be avoided. How can I sleep soundly next to the toilet? Showers are splashing, and moisture will inevitably overflow. Therefore, the bed must be far away from the bathroom. 6. The bed should not be located directly under the chandelier: it is very common for the bed to be under the lamp. If it is a general ceiling lamp, it is better, and if it is the lamp that hangs down, it is best to replace it. Otherwise, the shadow under the lamp can easily cause nightmares, especially for children and frail people. 7. The head of the bed is not leaned or back to the window: Feng Shui theory believes that the head of the bed should be leaned behind. In traditional Chinese medicine, there are such expressions as "avoiding wind like arrows" and "a fairy is also afraid of the wind behind the head". If the head of the bed is facing the window or the head of the bed is not leaning, the wind will easily blow from behind. And the resistance in sleep state is the weakest, and it is blown by the wind behind the head for a long time, which not only affects sleep, but also easily produces migraine and other phenomena. Editor in charge: Gococo Coco
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 Dongguan Noegem Plastic Products Co.,Ltd , http://www.noegempLastic.com