Guangzhou Quanxu Technology Co Ltd
In the greenhouse strawberry planting, most people are concerned about the temperature and humidity of the greenhouse and the temperature and humidity of the soil, and often ignore the effect of carbon dioxide in the greenhouse on the growth of strawberries. In fact, the concentration of carbon dioxide is important in the growth of strawberries. Energy conversion process - photosynthesis, so scientific determination of carbon dioxide concentration in the greenhouse, and reasonable greenhouse...
Titanium dioxide is a white pigment whose main component is titanium dioxide. Therefore, the use of titanium dioxide is mainly discussed through the use of titanium dioxide. Titanium dioxide is a substance with excellent thermal stability and is an acidic amphoteric oxide. But it has photochemical activity. It is not very hygroscopic and has three crystal forms in nature: rutile, anatase and titanium. What are the uses of titanium dioxide, and what is the main purpose of titanium dioxide? 1....
Waterborne coating is new type of coating in market, but many people not have correct understanding about waterborne coatings. The waterborne coating is use water as medium, for example, interior and exterior wall paints, metal coating, car paints, ect. It is obvious that waterborne coating are widely use in various filed. Let's take a closer look at waterborne coatings. 1. Three type of waterborne coatings: water-disperse coatings, water-dilutable coatings, water-soluble coatings....
Silica is widely exist in nature, is the main component of ceramics, glass, and other none-metallic products. Especially ultrafine silica, due to it's small particles size so large specific surface, strong surface attachment, high chemical purity, good dispersion performance. With it's excellent stability, ultrafine silica is become widely use in rubber, plastics, coatings and other filed. Today let us to take a look about the application of ultrafine silica in these major filed. 1.Silica Use...
Polyester PET film is a type of plastic polymer with various uses and a substantial array of positive characteristics. Polyester plastic is made from polyethylene terephthalate (PET) and can be manipulated under certain heating conditions to form sheets, rods, films, and other shapes. Advantages of PET film. PET is exceptionally well known for providing superb optical clarity, which is especially beneficial for making display products. In addition to a choice of available textures and finishes,...
What is PET film? PET film is polyethylene terephthalate. It has excellent physical properties, heat resistance, chemical resistance and dimensional stability. With the development of technology, PET film has also been widely used. Such as glass fiber reinforced plastic industry, building materials industry, printing industry, medicine and health. In our life, a lot of packaging for food, medicine, etc. is made of PET film. As a type of PET product, PET film can be recycled again and again....
The matting agent in coating is a kind of additive that can change the optical properties of the paint film surface, can form a fine rough surface of the paint film, and the light project on the paint film can produce diffuse reflection, so as to achieve matte effect. To form a fine rough surface, the coating needs to meet two conditions:(1) there are a large number of matting agent with suitable particles size; (2) produce suitable volume shrinkage during the drying process of the paint film....
Matting is a property of coatings that delivers a smooth, delicate look and shows little-to-no sheen. Matting lowers the gloss by scattering the light in many directions leading to surface appearance less glossy. It can be used for many kinds of industry coatings. In our daily life, we encounter many matte surface: at home, automobile finishes, on the way to work, or at night in restaurants. In our homes, most of the furniture has a matte appearance and when wood panels cover the ceiling in a...
Nowadays, silica oil-based and water-based coatings are coming into our eyes, which has arouse more attention and discussion from people. People are uncertain about choosing oil or water coatings? Do you know the difference between oil-based and water-based coatings? Here are the details to help you know the difference between them. First, we need to know how do coatings work? Oil-based coatings work by penetrating into the timber. Oil-based coatings penetrate into the pores of the timber,...
Yesterday, I learned from Wuhan Textile University that at the recent Provincial Science and Technology Innovation Conference, Professor Chen Yiren's research project “The Aurora Genetic Analysis and Matting Agent Preparation for Wool Fabrics” won the third prize of Hubei Province Technology Invention. Textile fabrics, especially wool fabrics, are processed or used. Due to improper ironing or frequent friction, stretching, compression, etc., the wool scales wear, the yarns become flat, and the...
In the printing process of matt paper, there is often such a problem that the drying performance is poor, the drying speed is slow, and it is easy to “off the ink” during the post-press processing, especially when printing the black ink in the field, to give the product quality, The production cycle has had an impact. To this end, we look for reasons from the following aspects. First, the pH of the paper is tested. Because the pH value of the paper is one of the main factors affecting the...
1, ink box and photo printing paper must be used in the same package. 2. The glossy side of the photographic printing paper is the printing surface, and the printing side must be put into the paper box.If you put wrong, you can't print the image. 3. Do not touch the picture printing, or the fingerprints left on the surface of the printed sheet will produce a bad effect. 4, if the ink film of the ink box is loose, please follow the direction of the arrow to tighten the film before loading and...
I. light box cloth is divided into three types according to the production process: light box cloth with knife scraping method, light box cloth with calender-pressing method and light box cloth with pasting method: 1, knife scraping method light box clothLight box cloth process is the liquid PVC paste with a number of back scraper evenly coated on the front and back of the base cloth, and then through the drying process to make it fully integrated into a whole, after cooling molding.Its...
Speaking of the plate heat exchanger, in the structure, the four corner holes on the plate, the formation of the fluid distribution tube and the discharge manifold, two kinds of heat transfer media respectively into their respective flow channel, the formation of a countercurrent or and smooth flow through each plate heat exchange.It has good social and economic benefits.Plate assembly, two sets of interwoven, board with board between the rubber sealing strip with adhesive, its role is to...
A. refrigeration: used as a condenser and evaporator. B. Hvac: intermediate heat exchangers used with boilers, intermediate heat exchangers for high-rise buildings, etc. C. Chemical industry: soda ash industry, ammonia synthesis, alcohol fermentation, resin synthesis cooling, etc. D. metallurgical industry: aluminate mother liquor heating or cooling, steelmaking process cooling, etc. E. Machinery industry: various quenching liquid cooling, reducer lubricating oil cooling, etc. F. Power...
Piece of corrugated plate heat exchanger due to the plate bending surface special function make fluid along the narrow channel flow to break the speed change in fluid velocity (Rc = 200) has a strong end to speed up the destruction of strengthening heat transfer fluid boundary layer Cheng Xiao improve the heat transfer ability and make it has a compact structure, low metal consumption of spiritual, heat loss, installation, operation, and check the unpick and wash, strong corrosion resistance,...
What should be paid attention to in the use and maintenance of heat exchangers?Today we mainly analyze the heat exchanger in the use and maintenance of matters needing attentionDaily maintenance of heat exchangerIn daily operation, special attention should be paid to prevent the fluctuation of temperature and pressure.Cleaning of heat exchangerAfter a long time of operation, due to the corrosion, erosion, scaling, coking and other reasons of the medium, the internal and external surfaces of the...
A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid, also known as a heat exchanger.Heat exchanger plays an important role in chemical, petroleum, power, food and many other industries.In chemical production, heat exchanger can be used as heater, cooler, condenser, evaporator and reboiler, etc. Anticorrosion Pigments, Inkjet Receptive Coating, Matting Agent
Heat exchanger: equipment for changing the type of heating medium and changing the parameters of heating medium.Classification according to the heat exchange medium: water water heat exchanger Surface heat exchangers: heat exchangers in which cold and hot fluids are separated by metal walls and heat exchange is carried out through metal walls, such as shell and tube type, volume type, plate type, spiral plate type, floating coil type, etc. Hybrid heat exchanger: a heat exchanger in which cold...
PFA PFA is short for perfluorooxygenyl, or Teflon under the DuPont trademark?PFA.PFA has a low coefficient of friction, so it has excellent non-viscous properties.It is a fairly soft polymer with high stress cracking resistance and resistance to almost all solvents and chemicals.PFA can also withstand high and low temperature conditions.It provides continuous service temperatures up to 260°C (500°F).PFA has excellent flame retardant, chemical stability and high dielectric strength. FA piping is...
Digital oil canvas is a kind of adornment that is more popular on market at present, have very strong adornment sex and distinctive artistic glamour, it is a category that has aristocratic breath most in adornment picture, it got rid of the border of traditional adornment picture to bind, it is individual character make public, vogue, it is contemporary household adornment tide. Digital oil painting can be preserved for two or three hundred years if it is well maintained. The key to this lies...
Medical laser film: The structure is the base protective layer (binding layer) of photosensitive emulsion, in which the color laser film is divided into protective layer, upper photosensitive emulsion, filter layer, partition layer, middle and lower photosensitive emulsion, binding layer, substrate and anti-halo electrostatic layer.There are mainly two kinds of green sensitive film and blue sensitive film, the characteristics of which is to be used in combination with the sensitizing screen,...
Indoor/outdoor light box, window and other backlighting display occasions, stage studio background production, portrait art production, map production, POP, easy to pull treasure and other exhibition rack production, curtain, wall hanging and other home decoration production. backlit flim ● backlit flim products strictly in accordance with the quality control, process control procedures control standards. ● backlit flim jet receiving material can be well applied to HP DJ series plotter, ENCAD...
Powder coating is completely different form from general coating, it exists in the state of fine powder.Powder coating is a new type of 100% solid powder coating without solvent.So it's called powder paint.With no solvent, no pollution, recyclable, environmental protection, save energy and resources, reduce labor intensity and high mechanical strength of the film. Powder coating production process is complicated, the main steps are as follows: material, bearing, premixing, melting extrusion,...
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