How to choose metal hose connector Adhesives

Metal hose fittings selecting the basic principles of adhesives - Adhesives with special features and practical value in the metal hose connector is widely used . The world for different purposes than ten thousand kinds of adhesive above , the choice of adhesive , to be based on the following four indicators . ( 1 ) anti-media functionsAir, water, oil , acid, etc. referred to a qualitative , most preferably adhesive resistant to air dielectric function , is bonded to the adhesive member in the air the highest intensity . In the different types of gas or injection of the adhesive force of dissolution medium is quite different , and even then angle during operation of a prime mainly air , water, oil , and acids . Use adhesive should be selected using the media -resistant plastic . 2) The adhesive strength of the adhesive face of each 1cm2 , the normally gentle air medium is called Hydraulic tube fittings strength , in MPa . And the adhesive strength of tensile strength, shear strength, torsional shear strength and peel strength lengths , respectively mean adhesion member in a different direction of the force of the breaking strength . Select adhesives, should be based on the position of mechanical parts and force intelligence misinterpreted selection with suitable strength adhesive . ( 3 ) Temperature function refers to fully cured layer can withstand temperature range, such as a temperature -60oC-120oC, that is, the stick and is available in the range of -60oC to 120oC combined , exceed this limit , the adhesive force decreased significantly. Construction machinery cooled engine , the body temperature up to 130oC. Hydraulic oil up to 120oC, the selected bonding adhesive must be in this type of adhesive can withstand the temperature range. ( 4 ) curing time Curing time can be divided into the beginning of solid ( or called fixed ) time and Full cure time . It refers to the adhesive bonding at room temperature into a solid gel hereinafter gummy house at the time . Fixture is exposed adhesive layer is not due to weight loss pieces time required ; whole solid layer is fully cured , and the highest strength and resistance to media stick Sharp function best time . Fixture time adhesives can be divided by cyanoacrylate ( or Quick Adhesive ) and slow Adhesive two kinds . Cyanoacrylate Fixture time only a few seconds or tens of seconds . For more on the slow Adhesive shorten the curing time , the available heat blowing heated oven baking and other measures , but the heating temperature and time should be different types of plastic may be. Choose instant dry or slow adhesive kind , according to the different circumstances of the adhesive pieces and work needs. In general, the slow adhesive bond strength and superior anti-media performance cyanoacrylate .
The above points are selected adhesive metal hose connector fundamental principles , and only choose exactly adhesives in order to achieve the desired results, the use of metal hose restore function .