Delibrate of modified of phenolic aldehyde resinous

Polyvinyl alcohol shrinks colophony of aldehyde modified phenolic aldehyde
What use at most on industry is to use polyvinyl alcohol to shrink colophony of aldehyde modified phenolic aldehyde, it can progress colophony is right the felt force of fibre glass, improve brittleness of phenolic aldehyde resinous, add the mechanical strength of complex material, drop solidify rate is helpful for dropping next shape pressure. Use as the phenolic aldehyde colophony of modified is commonly use ammonia water or magnesian the phenol formaldehyde resin that makes activator composition. Use as the polyvinyl alcohol of modified shrinks aldehyde is general to shrink fourth aldehyde is mixed shrink armour aldehyde. When using general its dissolve at alcohol, regard resinous as solvent. Use shrink the colophony that methylic echo comprises aldehyde and phenolic aldehyde hydroxide is colophony of 1 kind of outstanding carrier of special type printing ink.

Colophony of polyamide modified phenolic aldehyde
The phenolic aldehyde colophony of classics polyamide modified progressed endurance of concussion of phenolic aldehyde resinous and caking property. Use as the polyamide of modified is a kind of hydroxide methylic change polyamide, methylic or vivid hydrogen is comprising use hydroxide colophony process medium or the intent that fit echo makes chemical bond and arrives at modified in colophony solidify process. The thin wall canal such as the fishing rod that makes with this colophony has outstanding mechanical function.

Colophony of phenolic aldehyde of annulus oxygen modified
The complex material that mixture of colophony of phenolic aldehyde of sex of the solid that use heat and double phenolic A epoxy resin makes can hold a good qualities of 2 kinds of resinous concurrently, improve their respective blemish, arrive at the intent of modified next. This kind of mixture has the caking property with outstanding epoxy resin, improved brittleness of phenolic aldehyde resinous, have the hear resistance with phenolic aldehyde outstanding colophony together, improved the blemish with epoxy resin poorer hear resistance. This kind of modified is the hydroxide in passing phenolic aldehyde colophony methylic with epoxy resin medium hydroxyl reachs annulus oxygen radical undertakes chemical echo, and oxygen radical has the link in the phenolic hydroxyl in phenolic aldehyde colophony and epoxy resin chemical echo, final cross-linking arrives at an intent into mixed and disorderly bodily form construction, it is 1 kind uses the widest phenolic aldehyde to add measure of pliable but strong.

Colophony of phenolic aldehyde of organic silicon modified
Organic silicone is had outstanding hear resistance and be able to bear or endure wet sex. Can pass the phenolic hydroxyl in using organic silicon monomer and resin of linear phenolic aldehyde or hydroxide methylic fit echo will improve phenolic aldehyde resinous hear resistance and be able to bear or endure ability in swimming. Choose different organic silicon monomer or its mix monomer and modified of phenolic aldehyde colophony, but the colophony of modified phenolic aldehyde of different function, have extensive alternative. The complex data that uses preparation of colophony of phenolic aldehyde of organic silicon modified can be in course of study of 200-260 ℃ dirty is used proper and long-term, can serve as instantaneous high temperature resistant data, use as the ablation data such as rocket, missile.

Colophony of boracic modified phenolic aldehyde
Because be in construction of element of phenolic aldehyde resinous,introduced inorganic boracic element, make hear resistance of resinous of boracic modified phenolic aldehyde, instantaneous high temperature resistant gender, be able to bear or endure ablation sex and mechanical function are better than colophony of general phenolic aldehyde much. They are multi-purpose at rocket, missile and space the category serves as the dimensional technique such as the aircraft to be able to bear or endure outstandingly ablation data.
The commonnest is use boric acid and phenol echo, generate ester of boric acid benzene, again as resonant as much polyformaldehyde or formaldehyde aqueous solution, make a phenolic aldehyde resin that contains boron. Condensate of colophony of boracic phenolic aldehyde arrives in the incomplete carbon rate of 900 ℃ 70% , differentiation peak temperature is as high as 625 ℃ . In addition, introduced in construction of element of boracic phenolic aldehyde flexible bigger - B-O- key, endurance and mechanical function progress somewhat; Boron contains in solidify commodity 3 construct to cross-linking, make its are able to bear or endure ablation function and be able to bear or endure excel of neutron radiate function is general phenolic aldehyde colophony. The labyrinthian intensity of the pressing plate of layer of carbolic cloth boracic phenolic aldehyde that makes arrives at 420 MPa, shear strength is as high as 39.7 MPa; Oxygen, acetylene quality ablating rate only 0.0364 G/s, than carbon / low 20%[2] of data of baric phenolic aldehyde. Resinous of the double phenolic A that the law comprises use formaldehyde aqueous solution boracic phenolic aldehyde is able to bear or endure ability in swimming had further progress.

Colophony of balata modified phenolic aldehyde
Choose in mixing method to add fourth nitrile balata phenolic aldehyde colophony in all, it is the useful idea that add pliable but strong. The 2% ～ that balata attends a quantity to be colophony quality commonly 10% , result of concussion pliable but strong can progress 100% above. Because sex of both photograph dissolve is poor, can use upright carboxyl group so or carry amine radical man nitrile balata and phenolic aldehyde hydroxide are methylic and resonant, comprise colophony of phenolic aldehyde of echo balata modified. This colophony can be used extensively at the category such as aerospace.

Alkyne radical or colophony of phenolic aldehyde of Xi propyl modified
It is the mother's body with line phenolic aldehyde commonly, in phenolic oxygen or benzene is introduced on benzene annulus propyl of acetylene radical, acetylene radical, alkyne. Its solidify basically is a course different the group of luscious group will finish, changed way of solidify of condensation of traditional phenolic aldehyde. The polymerization of acetylene radical and alkyne propyl is opposite easier, and benzene acetylene base the solidify temperature with higher need. Besides colophony of alkyne propyl phenolic aldehyde some enlarge catenary and outside having higher molecular quality, the molecular quality of these polymer is inferior. Colophony contrast has these phenolic aldehyde colophony that pass addition polymerization solidify and traditional hot solid sex very good thermal stability and higher incomplete carbon rate.
Chemistry of the Chinese Academy of Sciences was undertaken alkyne propyl changes phenolic aldehyde resinous to comprise delibrate, this kinds of colophony of place preparation is had crackajack technical, doesn't the viscosity of 100 ℃ surmount 400 Mpa? S; Colophony can undertake heating up solidify in 200-250 ℃ ; Hot condensate hear resistance has than colophony of traditional phenolic aldehyde showing improve, DMA indicates colophony condensate has the vitrification temperature that is as high as 370 ℃ , TGA indicates its are initiative temperature of hot become divided is in 400 ℃ above.
Use acyl of double Ma Lai inferior amine and Xi propyl change colophony of line phenolic aldehyde (BMAN) copolymerization can be made those who reserve to shape at RTM is high temperature resistant colophony. Is this colophony in 100 ℃ / the viscosity <150 Mpa inside 8 H? S, apply to RTM to shape technology and mould pressing technology. And this colophony is had crackajack high temperature resistant function, DMA is analysed indicate Tonset of temperature of inflection point of curve of quantity of pattern of colophony mould system is in 390 ℃ above, vitrification temperature > 400 ℃ . Quartz fiber / complex material also has BMAN colophony better high temperature resistant function, can use below 350 ℃ .

Colophony of ester of phenolic aldehyde cyanic acid
Ester of phenolic aldehyde cyanic acid is to show with line phenolic aldehyde colophony is framework commonly, phenolic hydroxyl the ramification of phenolic aldehyde colophony that luscious group replaces and is formed by cyanic acid ester, in the fit below heat and activator effect 3 annulus change echo, build the network of tall cross-linking density that contains a lot of3 Qin annulus tectonic macromolecule. Its solidify echo is from solidify system, break out without volatile young member when solidify, shorten rate is low. This kinds of colophony has both acyl of the processing technique function of fourth epoxy resin, double Ma Lai inferior the high temperature function of amine and phenolic aldehyde resinous are flame retardant and characteristic. This colophony still has outstanding interpose report function, it is the admirable data that number of preparation high speed and high frequency affix an official seal brush fittings of circuit board and insulation of high-power electric machinery, also be manufacturer together tall function appears a tectonic data and aerospace to construct with tall function data of matrix of complex material optimal.
Designing institute of delibrate of Beijing glass reinforced plastics combines the unit such as northwest industry university, choose improvement phenol, the bromic law that change cyanogen comprised colophony of monomer of ester of phenolic aldehyde cyanic acid, reach hot weightlessness to analyse with experiment of infra-red, gel (the token that TGA) had construction and function to its. The phenol with the tradition - the bromic law that change cyanogen is comparative, improvement phenol - the compositive goods that the bromic law that change cyanogen got the function is stabilized, this commodity is 6.5min in the gel hour when 200 ℃ , fumy, nigrescent picture is not had when gel, solidify colophony is led in the incomplete carbon below atmosphere of the nitrogen when 800 ℃ for 63.6% . Manage of 637 place, Hua Dong are versed in the unit such as the university also undertook delibrate of this type resinous works.

Colophony of benzene evil Qin
The intermediate body benzene that adds up to compound of content, amine and formaldehyde to comprise a kind to contain heterocycle to construct for material with phenolic apperception is evil Qin. Heating and / or below the effect of activator, benzene is evil body can break out among Qin open loop is aggregate, generate contain nitrogen and resinous of similar phenolic aldehyde is meshy and tectonic. General we call this kind of new-style colophony colophony of phenolic aldehyde of open loop polymerization. Colophony of evil Qin is in this kind of benzene shape there is young member acquit in solidify process. Open loop does not have acquit of small element content in aggregate process, improved sex of processing of phenolic aldehyde resinous, finished product hole leads low, function to progress greatly.
　
Colophony of xylene modified phenolic aldehyde
Colophony of xylene modified phenolic aldehyde is the xylene link that introduces hydrophoby construction in construction of element of phenolic aldehyde resinous, from this the phenolic aldehyde resinous after modified is able to bear or endure sex of ability in swimming, alkali resistance, hear resistance and electric insulation function get improvement.

Colophony of formaldehyde of 2 benzene aether
Colophony of formaldehyde of 2 benzene aether is to use 2 benzene aether to replace phenol and formaldehyde condensation polymerization and become, fibre glass of resinous of formaldehyde of 2 benzene aether enhances complex material to have outstanding heat-resisting function, can use as material of H class insulation, it still is had crackajack anti-radiant function, hygroscopic very low also.

Acyl of double Ma Lai inferior colophony of amine modified phenolic aldehyde
The acyl of double Ma Lai with outstanding hear resistance is introduced in phenolic aldehyde colophony inferior amine, because of both between addition of shift of fit pH indicator is resonant, cut off to some of phenolic hydroxyl is had so or close the effect, make the temperature of hot become divided of modified resin progresses apparently, about improving frictional resistance data high temperature resistant the function has very big effect.
Acyl of double Ma Lai inferior colophony of amine modified phenolic aldehyde has crackajack hear resistance, heat is out of shape temperature (HDT) is 273 ℃ , vitrification temperature (Tg) is production value and use volume growth very nimble. Abroad can choose the main reason of phenolic aldehyde glass reinforced plastics extensively, it is this kinds of commodity has its collective advantage in functional respect; The 2 production that are phenolic aldehyde glass reinforced plastics and contrast of delibrate development work are adept, touch simply all sorts of technology measure. Contrast to it, china reachs his to use a field in the production of phenolic aldehyde glass reinforced plastics, put in the distance with very big move with abroad, make shape method is not much, be confined to belt of mould pressing, cloth to surround, the hand that reachs near future development papers a technology to wait. RTM, pull crowded wait for phenolic aldehyde glass reinforced plastics to shape technical measure, just just start, but show very strong development momentum.




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