Good choice of Antibacterial epoxy powder coating with excellent anti-corrosion
In the oil field oil and water pipelines, there are a lot of bacteria, especially sulfate-reducing bacteria, iron bacteria, the existence of saprophytic bacteria and multiply incessantly and pipe scale, and are subject to severe clogging and corrosion, a direct impact on oil production, oil and water injection. Oil field water pipelines, generally using the anti-corrosion of the steel pipe lined with cement mortar, the use of strong alkali in the cement mortar to inhibit bacterial attachment and reproduction to prevent fungus formation of nodulation clogged pipes. Lined with cement mortar, poor adhesion, easy to crack off the block, will damage the transfer pump or clogged filter; cement mortar layer surface roughness, friction, and increase the transmission medium resistance and pressure affect the liquid flow rate; again due to thick cement mortar lining, the actual reduction in the displacement of the pipeline. Antibacterial epoxy powder coating a good solution to this problem, the characteristics of the powder coating for inorganic antimicrobial agent, the sterilization epoxy powder coating preparation, sterilization mechanism, anti-corrosion the sterilization epoxy powder coating pipes and range of applications, the coating technical performance, effectiveness, and use antibacterial within the economic benefits of anti-corrosion pipe.
Φ114mm × 9mm cement mortar lining of pipelines in accordance with the previous oil field oil and water pipelines sterilization approach, for example, the throughput will be reduced by 24%; to conveying the same throughput, you have to increase the diameter, thus a waste of steel about 30%. To solve this problem, Heilongjiang Branch of science and technology with the industry limited liability company, and Bodie Youth Technology Development Co., Ltd., to develop and use a special powder champion machine antibacterial agent added was successfully prepared with antibacterial, anti-corrosion , inhibit algae breeding a new type of epoxy powder coating. Traditional electrostatic spraying technology, antimicrobial epoxy powder coating in the pipe wall to form a smooth appearance after curing, stable physical and chemical properties, in full compliance with national standards of anti-corrosion coating. The coating can automatically kill inhibiting the adhesion of bacteria, mold, algae, and destroying bacteria rate of more than 98%. This technology not only in one fell swoop solve the above problems, and the additional cost is limited. The prominent advantages are: a broad spectrum of long-term antibacterial, time to add long-term automatic sterilization, heat resistance, water resistance, chemical corrosion, no resistance, the application fields of environmental pollution on human security. Years of development shows that this is a very promising antimicrobial material.
Since the late 1980s, the Japanese first began to develop a distinction between traditional, organic antibacterial agent and antifungal new inorganic antibacterial agent. It is based on a variety of inorganic materials made through a particular processing method. Antibacterial agents. With a broad spectrum of long-lasting antibacterial and environment-friendly highlight the advantages, is very promising antibacterial material. Our researchers into the field since the 1990s, because of the great advantages of the inorganic antimicrobial technology, and good prospects, Chinese Academy of Sciences, dozens of units, investment in development and applied research, and achieved gratifying results, making China the world after Japan , inorganic antimicrobial technology, the largest, fastest-growing countries. Kefa use the same industry, epoxy powder coating inorganic antibacterial agents from Bodi Youth, the antimicrobial agent is inorganic silicon oxide as a carrier, inorganic antimicrobial metal salts as active ingredients, and after the ion exchange technology allows the carrier full loading antibacterial metal ions, and then smash the most advanced method for producing ultra-fine powdered antimicrobial agent. The main physical and chemical indicators of the antimicrobial agent. Properties: white powder, pure proportion of 1.9 to 2.1; specific surface area 600m2 / g; bulkiness 0.35 ~ 0.4g/cm2; specific heat 0.26cal / g; particle size 1.27μm; pH 8 ~ 10; heat of 8,000 ° C; acid (pH = 3-4); alkali (pH = 13).
The antimicrobial agent with excellent antibacterial functional performance, the JC/T897-2002 and the Ministry of Health “disinfection technical specifications” (2002 edition), Staphylococcus aureus, minimum inhibitory concentration (MIC) is 0.156g / L; E. coli The minimum inhibitory concentration (MIC) to 0.312g / L.
Antibacterial agents of the toxicological detection of very strong to justify the use of such inorganic antibacterial agent is very safe. What is the principle of the antibacterial agent sterilization? There are several different interpretations and differences, but our practice experience should be: When bacteria, fungi and other microbes come into contact with the release of antimicrobial metal ions, these antimicrobial active ingredient with a positive charge, while the micro-organisms with negative charge, according to the Coulomb gravity, both very easy to mutual adsorption. When a certain number of microbial surface savings of antimicrobial metal ions, it will effectively breakdown the cell wall, disrupt their cell membrane, come into contact with intracellular proteins and nucleic acids. Reaches a certain concentration after a chemical reaction to protein denaturation, reducing the activity of the protease.
The basis of all life, due to protein inactivation of proteins that affect cell metabolism and respiratory function, and can not be split, reproduction until death, thus completing the whole process of bacteriostasis, sterilization. Different from traditional solvent-based organic antibacterial agents, which kill antibacterial class at the same time, consumption of (volatile) itself; this class of antibacterial agents kill cells, the antimicrobial metal ions from the cells freed itself no consumption, still exist, can continue to kill the suppression of the fungus. This is the ability to maintain long-lasting antimicrobial reason. Antibacterial epoxy powder coating with ordinary epoxy powder coating materials used and the ratio of major changes; also no significant difference in the preparation process, but fungus-resistant epoxy powder coating anti-bacterial function is very excellent. Building Materials Industry Environmental Monitoring Centre prepared by the above fungus-resistant epoxy powder coating with antibacterial function test results show that: excellent antibacterial effect, check the sample for E. coli inhibition rate of 98.2%, in line with JC/T897-2002 antibacterial performance requirements. Antibacterial epoxy powder coating anti-corrosion materials, using the following process can be made of the physical and chemical properties of compliance and antibacterial function within the anti-corrosion pipe: steel pipes a rust (Sa2 class) → test → air purge → IF heating (180 The finished pipe ± 10) ℃ → spraying powder → finished product → test → stacked.
What are the main features of anti-corrosion pipe sterilization? Includes seven aspects: anti-bacterial powder coating curing temperature (180 ± 10) ° C; coating process is simple and good preservative effect of price and cement mortar lining anti-corrosion pipe flat; uniform distribution of ultrafine inorganic antibacterial powder coating added their own safety non-toxic, coating have antibacterial agent can be bactericidal, truly sustainable, long-term; replace the cement mortar lining pipe, increasing the effective administration of the steel pipe output of basal area, which would increase throughput 24 %; pipe coating smooth surface, small friction, reducing the delivery pressure of the media, but also improve the throughput of more than 5 percent, played the role of energy-saving; have an antibacterial effect due to the coating, the harmful bacteria is difficult to attach the wall propagation can be extend pigging cycle, reduce the number of pigging to reduce costs; its life is a cement mortar lining of the tube several times. Antibacterial epoxy powder coatings, antibacterial anti-corrosion coating can automatically kill attached to the suppression of bacteria, fungi, yeast and a variety of algae. In addition to the above-mentioned oil, water injection pipe wall coating can also be used in many fields of food processing equipment, shipbuilding, construction materials, such as sterilization, anti-corrosion, anti-algae project, the coating technical indicators in full compliance with the SY/T0442-1997 standard requirements. Application of a broad and promising.
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