What new applications have appeared in the adhesive industry? For example, anti-corrosion: the steam pipes of ships use aluminum silicate and asbestos to achieve the purpose of heat insulation, but the condensed water is alternately generated due to leakage or hot and cold, and is accumulated on the outer wall of the steam pipe of the bottom layer; The steam pipe has been subjected to high temperature for a long time, and the role of soluble salts is very serious. To this end, the aluminum silicate bottom layer water glass series adhesive can be used as a coating material to form an enamel-like coating layer having a thermal expansion coefficient similar to that of the pipe material, and the thermal stress is small and does not crack. In mechanical installations, components are often bolted. Long-term exposure of the bolted device to the air creates crevice corrosion. During mechanical work, the bolts sometimes loosen due to severe vibration.
To solve this problem, the connecting members can be bonded with an inorganic adhesive in a mechanical installation and then bolted. This can not only play the role of reinforcement, but also anti-corrosion effect. Another example is used as biomedical: material hydroxyapatite Ca10(PO4)6(OH)2 (referred to as HA) bioceramic composition is close to the inorganic component of human bone, has good biocompatibility, and can form with bone. A strong chemical bond is the ideal hard tissue replacement material. However, the prepared HA implant has a high general elastic modulus and low strength, and the activity is not satisfactory. Global Coatings.com understands that phosphate glass adhesives are used to bond HA raw material powders at a lower than conventional sintering temperature by the action of adhesives, thereby reducing the modulus of elasticity and ensuring material activity. Cohesion Technologies, Inc. announced that they have developed a Coseal sealant that can be used for heart bonding and has been successfully used clinically.
In comparison with 21 cases of cardiac surgery in Europe, the use of Coseal surgery significantly reduced surgical adhesions compared to other methods. Subsequent clinical studies have shown that Coseal sealant has great potential for development in heart, gynaecology and abdominal surgery. The application of adhesives in medicine has been hailed as a new growth point in the adhesive industry. A structural glue consisting of epoxy or unsaturated polyester. Among contemporary defense technologies, stealth submarines are one of the symbols of naval equipment modernization. An important method of submarine stealth is to lay a sound-absorbing tile on the submarine's outer shell. The anechoic tile is a rubber with sound absorbing properties. In order to achieve a firm bond between the anechoic tile and the boat wall steel, it depends on the adhesive. Used in the military field: tank maintenance, military boat assembly, light bombers for military aircraft, thermal protection layer bonding of missile warheads, preparation of camouflage materials, anti-terrorism and counter-terrorism.
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