What is epoxy resin? What it points to is high polymer catenary two are contained in the structure or oxygen of two above annulus base the floorboard of round high polymer compound, epoxy resin belongs to colophony of hot solid sex. Epoxy resin of epoxy resin has He Te to nod: What general epoxy resin points to is double phenolic A epoxy resin. The raw material that regards annulus oxygen as glue normally is used. 1, adhesive strength is high: Epoxy resin glue is in synthetic adhesive, its stick receive intensity to stand in front row, use is extensive. 2, solidify shrinkage is small: The shrinkage of epoxy resin adhesive, can saying in masses adhesive is the smallest. Will view a group of data: Glue of phenolic aldehyde colophony: 8—10% ; Organic silicone glue: Glue of 6—8% polyester colophony: 4—8% ; Epoxy resin glue: 1—3% and the shrinkage of the epoxy resin glue after modified can fall even 0.1—0.3% . 3, be able to bear or endure chemical sex: Get not easily soda acid salt corrode, can exist in very much chemical raw material, for instance vitriolic, oil, did not wait, and won't change its property. 4, insulating property: The puncture voltage of epoxy resin can be more than character of adhesive of 35kv/mm epoxy resin: The character of epoxy resin adhesive is more, if major does not do this, what won't understand commonly is particularly all ready, do obeisance to be here high the simple character epoxy resin adhesive is summarized. 1, touch denaturation: Those who point to is annulus oxygen colloid gets the agitate of outside force, shake, shake wait for a circumstance, glue becomes rare, after outside force element stops, before colloid can restore ropy condition. 2, hardness: Those who point to is adhesive faces outside force, for instance scratch, nick, the circumstance of impress and so on, the reaction that the surface produces. 3, internal stress: Those who point to is when falling without the existence of outside force, the temperature that the internal institute of adhesive produces changes, action, because the blemish of adhesive itself is brought about,this is commonly. 4, be able to bear or endure chemical sex: Ability salt, acerbity, alkaline, solvent is other perhaps and chemical kind of corporeal ability. 5, anti-flammability: When contacting blaze, need not burn, perhaps leave to won't continue to burn after blaze. 6, be able to bear or endure suffer a gender: Glue is in insolate, drop in temperature suddenly, suffer the condition after the circumstance such as harships. 7, ageing sex: Machining after sizy solidify, keep in storage is follow-up perhaps in use process, because outside element is brought about,produce a few physics chemical perhaps change, glue becomes fragile, craze, bleb, bai Hua, the phenomenon such as pulverization. Below for a few weakness that say epoxy resin: 1, viscosity is too big, apply man-hour to may have some of inconvenience, perhaps operate a problem to arise 2, percentage elongation is smaller, condensate sex is fragile 3, can come off intensity is not high 4, without good thermal shock sex, also be not worth to the endurance of mechanical wallop
Composite material why commonly used epoxy resin? The characteristic of epoxy resin adhesive
