Nylon 66 (PA66) has good mechanical performance, wearability to reach be able to bear or endure chemistry is caustic wait for an advantage, apply in the domain such as electric equipment of car, electron extensive. But PA66 belongs to flammability material, and the meeting when combustion has frit drop, put in very big safe risk, be opposite consequently of PA66 flame retardant modified considers to have important sense. Of PA66 flame retardant the system ever was given priority to with containing bromic fire retardant for a time, but bromic department fire retardant faces the problem such as more serious environmental protection and CTI all the time.

Current, red phosphorus fire retardant because its are flame retardant efficiency is tall, sexual price is compared exceedingly good, applicable at flame retardant PA66 material. However, red phosphorus fire retardant is mixed high in high temperature, air, humidity below alkalescent environment, easy and bibulous, bring about material acidification. Generated phosphoric acid can arise to metallic component corrode, the electric function that causes a product drops. Ba Sifu is new-style red phosphorus is flame retardant nylon reacts to prevent the acidification of red phosphorus, increase the stability of red phosphorus, at present effective method is red phosphorus of Fu of small capsule bag, this kind of method is to pass former an aggregate means, a kind of stable polymer material is formed in surface of red phosphorus pink, can isolate so red phosphorus and oxygen and the contact that water divides, reduce the acidification reaction of red phosphorus thereby, increase the use stability of material. And the different colophony that wrap Fu is flame retardant to red phosphorus enhance nylon the effect will be distinct, this research chooses the fire retardant of two kinds of red phosphorus of phenolic aldehyde colophony and Fu of bag of close amine colophony, the fire retardant that studies cladding of these two different bags is right flame retardant enhance PA66 material the influence of each function. Material comprises basically as follows: Is red phosphorus of Fu of bag of close amine colophony flame retardant does the mother expect (colophony of MC450) , phenolic aldehyde is Bao Fugong phosphor flame retardant does the mother expect (PF450): ? ?0% of  of compose of boil in water for a while. Flame retardant enhance nylon the recipe of 66 is: The nylon of 58% 66, of 12% flame retardant mother makings, the Bo fine of 30% . Can see, PA66 - 1# and PA66 - 2# all can achieve 1.6 Mm V-0 flame retardant grade, material all does not arise when combustion drippy, two kinds of red phosphorus that wrap Fu are flame retardant enhance PA66 to be had exceedingly good flame retardant the effect. The index of glowing silk combustibility of PA66-1# and PA66-2# (GWFI) all can achieve 960 ℃ , temperature is lighted since glowing silk (GWIT) can achieve 775 ℃ . Two kinds of red phosphorus that wrap Fu are flame retardant the perpendicular burning behavior of material, glowing silk tries function to be able to reach very good level. Still can see, PA66 - # PA66 of 1 summary prep above - the CTI of 2# , two kinds of red phosphorus that wrap Fu are flame retardant the CTI of PA66 material is in 450V above, the application of OK and contented most industry asks. Mechanical function is mechanical function is flame retardant the main base performance that enhances nylon to win application. Can see, PA66 - the tensile strength of 1# , flexural strength is higher, it is 164 MPa and 256 MPa respectively, compare PA66 - 2# parts tower above 5% with 6% . The breach impact strength of PA66-2# and without breach impact strength taller, it is 10.5kJ/m2 and 66.9 KJ/m2 respectively, compare PA66 - 1# parts tower above 3% with 21% . The material whole of preparation of two kinds of red phosphorus that wrap Fu is mechanical performance is higher, the function that can satisfy each domains asks. The exterior and odour wrap Fu red phosphorus from two kinds flame retardant the outward appearance of the print that note model that enhances PA66 can see, what close amine colophony includes preparation of Fu red phosphorus is flame retardant enhance PA66 (PA66 - surface of 1# ) print is slick, color is bright-coloured, the surface appears without float fine. What phenolic aldehyde colophony includes preparation of Fu red phosphorus is flame retardant enhance PA66(PA66 - color of 2#) print surface is inhomogenous, float fine is more. Because,this basically is close amine colophony its itself is a kind of very exquisite and smooth pink style, after as the bag cladding introduces, can have lubricant effect to whole data system, material surface is so slick, without apparent float fine. Wrap two kinds Fu red phosphorus flame retardant after enhancing PA66 grain makings to place 2h in 80 ℃ , check its odour size. PA66 - 1# material odour is apparent, have stronger excitant taste. PA66 - 2# odour is lesser, without apparent excitant odour. Because be in,this basically is former a reaction of the polymerization that wrap Fu is medium, young member of amine of resinous of Fu of close amine bag is not easy purify is clean, and the odour itself of amine material is bigger bring about. Because bibulous rate PA66 contains amine radical and carbonyl, easy form hydrogen to bolt with water element, because this is easy when use bibulous, generation adds model effect, bring about material bulk to expand, tigidity drops, apparent creep happens below stress action. Will study different bag Fu is flame retardant through checking the bibulous rate of material red phosphorus is bibulous to material the influence of rate, can see, the bibulous rate of two kinds of material is rise as the addition of time. The initiative and bibulous rate of PA66-1# and PA66-2# is adjacent, but the addition as bibulous time, the bibulous rate of different material appears to be distinguished apparently. Among them, red phosphorus of Fu of bag of phenolic aldehyde colophony is flame retardant nylon (PA66 - the bibulous rate of 2#) is inferior, the bibulous rate of 90d is 5.8% , and red phosphorus of Fu of bag of close amine colophony is flame retardant nylon (PA66 - the bibulous rate of 1# ) slightly tall, the bibulous rate of 90 D is 6.4% . Because itself of phenolic aldehyde colophony is bibulous,this basically is rate is low, and photograph of close amine colophony is stronger to water imbibition of phenolic aldehyde colophony, be able to bear or endure hydrolysis sex is opposite poorer bring about. Mix sheet metal to function of corrosion of metals red phosphorus is flame retardant enhance nylon material to be placed together in high temperature in tall wet environment, sheet metal observes after 240h corrode a circumstance. Carry sheet metal corrode a circumstance to judge different Bao Fugong phosphor is flame retardant enhance the nylon influence to function of corrosion of metals. Mix from blank appearance join different Bao Fugong phosphor is flame retardant the plan of corrosion of metals that strengthens nylon material can see, do not add the blank kind of modified nylon, metallic surface is corroded less, what slight air and lunt place cause corrode mark, PA66 - sexes of pair of corrosion of metals of 1# are opposite better, metallic surface glossiness is better, a few place have corrode a phenomenon, and PA66 - the corrosion of metals of 2# is serious, sheet metal surface loses luster completely, sheet copper surface is corroded become angry apparent. Red phosphorus of Fu of bag of colophony of this specification close amine is flame retardant red phosphorus of Fu of bag of colophony of nylon comparing phenolic aldehyde is flame retardant nylon is right of metallic copper corrode smaller. On put together, adopt preparation of close amine colophony and red phosphorus of Fu of bag of phenolic aldehyde colophony two kinds flame retardant enhance PA66 material, the material of preparation of two kinds of red phosphorus that wrap Fu all can achieve 1.6 MmV-0 flame retardant level, can rise through heater of 775 ℃ bright light temperature, CTI also can achieve 450V above. Red phosphorus of Fu of close amine bag is flame retardant the tensile strength that enhances PA66 material, flexural strength is higher, and red phosphorus of Fu of phenolic aldehyde bag is flame retardant the concussion performance of PA66 material is better. Additional, red phosphorus of Fu of bag of phenolic aldehyde colophony is flame retardant the odour that enhances PA66 is less than close amine to include Fu material, bibulous rate is inferior also. Red phosphorus of Fu of bag of close amine colophony is flame retardant the outward appearance that enhances PA66 is better, to the metal caustic smaller. Reference material: The red phosphorus that wrap Fu is flame retardant the function research that enhances PA66, internet data