Agent of epoxy resin solidify is as chemical as epoxy resin happening reaction, form meshy and stereo polymer, it is sth resembling a net of bag of ability of composite material framework in meshy body. Make line colophony turns tough bodily form into the additive of solid. The phyletic of solidify agent is alkalescent kind of is alkalescent kind of solidify agent WTF: Include adipose a group of things with common features 2 amine and much amine of many amine, scent a group of things with common features, other contains nitrification content and modified adipose amine. Acidity kind of is acidity kind of solidify agent: Include organic acid, acid anhydride, change boron and its complexing thing with 3 fluorine. Agent of addition addition solidify: Oxygen radical produces agent of this kind of solidify and annulus addition reaction makes solidify product one part catenary paragraph, make through progressively and aggregate reaction line element cross-linking becomes member of bodily form structure, agent of this kind of solidify calls melon solidify the agent again. Agent of catalysis catalysis solidify: Agent of this kind of solidify causes effect to epoxy resin happening only, open annulus after oxygen radical, structure of reticulate of polymerization of itself of catalytic epoxy resin, generate what be main structure with ether key to all get together content. Show in model is shown in model solidify agent is common use solidify agent, can divide again for addition polymerization model with catalysis model. Alleged addition polymerization open annulus namely the annulus of oxygen radical undertakes addition polymerization reacts, solidify agent itself attends to go in three-dimensional and reticulate structure. Agent of this kind of solidify, if add a capacity too little, criterion solidify child connective the annulus oxygen that end reacts base. Accordingly, will tell to agent of this kind of solidify, existing a right dosage. And catalysis solidify agent criterion with cation means, or anion means makes annulus oxygen base open loop addition is aggregate, eventually, solidify agent does not attend to go in reticulate structure, so nonexistent the right dosage that waits for equivalent reaction; Nevertheless, increase dosage to be able to make solidify speed is accelerated. In show in model in solidify agent, double cyanogen amine, oneself 2 acid 2 acyl hydrazine this kind of breed, fall in room temperature not dissolve at epoxy resin, and solidify reaction begins after dissolving below high temperature, also present a position of a kind of conceal consequently. So, can say for agent of functional sex conceal solidify. What agent of conceal conceal solidify points to is after mixing with epoxy resin, relatively long-term below room temperature condition stability (epoxy resin asks to be in commonly 3 months above, just have greater economic value, a good demand half an year or) of 1 year of above, and need to expose only fall in the condition such as hot, smooth, damp, begin solidify reaction namely. Agent of this kind of solidify basically is to use physics and chemical method to close of solidify agent active. So, also delimit these breed on some books for conceal solidify agent, can say actually for agent of functional sex conceal solidify. Because conceal solidify agent can mix with epoxy resin,make one juice model cooperate content, simplify of epoxy resin application cooperate formalities, its apply limits to pack glue sticky agent to seal the respect such as makings, coating to develop to coating, impregnating varnish, fill from sheet. Conceal solidify agent is caused increasingly in abroad take seriously, can say the key task that is research and development, new breed mixes all sorts of solidify agent modified cooperate new technology to emerge in endlessly, very active. Uncle amine of of amine solidify agent and intermediate amine are the lively hydrogen that goes up by azotic atom to the solidify action of epoxy resin open annulus oxygen radical is round, and made cross-linking solidify. Adipose a group of things with common features multivariate amine is like second 2 amine, oneself 2 amine, 2 ethylene 3 amine, 3 ethylene 4 amine, 2 second the active such as amino third amine is bigger, can make in room temperature solidify of epoxy resin cross-linking; And scent a group of things with common features is multivariate amine active is inferior, be like a benzene 2 amine, ability of be in 150 ℃ solidify is complete. Acid anhydride kind if binary acid of solidify agent and its anhydride arrange Ding Xi benzene of 2 acid anhydride, adjacent anhydride of 2 formic acid is OK solidify epoxy resin, but roast ability solidify must fall in higher temperature complete. Acid anhydride generates odd ester with the hydroxyl reaction in epoxy resin first, oxygen radical produces the carboxyl in odd ester and annulus addition ester is changed and geminate ester. Synthetic resin kind colophony of polyamide of quantity of small element of solidify agent is linoleic acid 2 get together body or tung-oil acid 2 get together body and adipose a group of things with common features multivariate amine is like second 2 amine, colophony of a kind of when 3 amine reaction makes 2 ethylene amber ropy shape. Agent of this kind of solidify is in of conceal solidify agent is stable below general requirement, but when the temperature with should heat constant, just show its are active and solidify epoxy resin. Be like double cyanogen amine, mix together with epoxy resin, stability is below normal temperature. If be in 145—165 ℃ , can make epoxy resin is in 30 minutes inside solidify. 3 nitrogen change thing of boracic ethylamine complexing, normal temperature also is stable, when 100 ℃ above can solidify epoxy resin. The liquid of 3 phase of epoxy resin solidify - operation time handles time (also be working hours or operating period) be solidify time partially, after mixing, colophony / solidify agent mixture is remained it is OK that the liquid is mixed the job and suit to apply. Receive to assure to be stuck reliably, total construction and position job should be operated in solidify had done inside time. Gel - enter solidify mixture to begin to enter solidify phase (also call ripe change level) , at this moment it begins gel or “ choppy ” . At this moment annulus oxygen is likely without long job, also will lose agglutinant. Any interference cannot have to its in this phase. It will become hard rubber like soft jello, you are pressed so that move it with thumb aux will be able to. Because at this moment mixture is local solidify only, new use epoxy resin still can be linked with its chemistry, accordingly this unsettled surface still can undertake sticking receiving or react. Anyhow, these ability are in the mixture that is close to solidify reduce. Solid - eventually mixture of oxygen of solidify annulus achieves solidify to turn solid into level, at this moment can sand milling and whole model. At this moment you already were pressed with thumb do not move it, in at this moment epoxy resin makes an appointment with those who have 90% to react eventually intensity, because this is OK,eliminate secures clip, put it below room temperature to maintain a certain number of angel it continues solidify. The epoxy resin that this stylish uses cannot have chemical link with it, because surface of this annulus oxygen must undertake pretreatment is like burnish appropriately, ability gets be stickinged well receiving mechanical strength. The hear resistance of the solidify temperature of solidify agent and condensate the solidify temperature of all sorts of solidify agents each are not identical, the hear resistance of condensate also has very big different. Popularly says, the solidify dose with use solidify high temperature can get the condensate with admirable heat-resisting. To agent of addition polymerization solidify, solidify temperature and hear resistance rise by following order: Adipose a group of things with common features many amine < fat < of much amine of annulus a group of things with common features is balmy a group of things with common features catalysis of acid anhydride of < of phenolic aldehyde of much amine ≈ is added get together model the hear resistance cardinal principle of solidify agent is in level of scent much amine. Anion polymerization (amine of father's younger brother and Mi Zun change ancient objects) , cation polymerization (BF3 complexing content) hear resistance is basically identical, although initiative reaction mechanism is different,this basically is, but the reticulate structure that forms ether key union eventually. Solidify reaction attributes chemical response, suffer solidify temperature the impact is very big, temperature heighten, react speed is accelerated, gel time shortens; Rise of gel time to show linear downtrend roughly along with solidify temperature to numerical value. But solidify temperature is exorbitant, often make condensate function drops, put in the upper limit of solidify temperature so; Must choose the temperature that makes solidify speed and condensate function eclectic, regard appropriate solidify as temperature. Press solidify temperature to be able to be solidify agent cent 4 kinds: Temperature of solidify of microtherm solidify agent is under room temperature; Temperature of solidify of cold curing agent is room temperature ~ 50 ℃ ; Lukewarm solidify agent is 50 ~ in 100 ℃ ; Temperature of solidify of agent of high temperature solidify is in 100 ℃ above. Belong to microtherm solidify model solidify agent breed is very few, have get together Liu alcohol, ester of much surprise cyanic acid etc; The T-31 modified amine that in recent years home develops go into operation, YH-82 modified amine all can be under 0 ℃ solidify. Belong to cold curing model a lot of more phyletic: Adipose a group of things with common features annulus of much amine, fat a group of things with common features much amine; Small element polyamide and modified fragrant amine. The Wen Gu in belonging to is changed model have one part fat Zun of amine of much amine of annulus a group of things with common features, father's younger brother, narrow one's eyes kind and 3 fluorine change boracic complexing content to wait. Belong to agent of high temperature solidify have scent a group of things with common features amine of colophony of phenolic aldehyde of much amine, acid anhydride, armour rank, amino colophony, double cyanogen and acyl hydrazine. To system of high temperature solidify, solidify temperature is divided commonly for two phase, microtherm solidify is used before gel, after achieving gel condition or more tallish than gel condition status, again high temperature heats the solidify after undertaking (Post-cure) , opposite before Duan Gu melt into beforehand solidify (Pre-cure) . The structure of solidify agent and characteristic as above, the hear resistance of the solidify temperature of solidify agent and condensate has very big concern. No less, be in same kind of solidify agent is medium, although have identical luscious base, but differ because of chemical structure, its property and condensate character are different also. Accordingly, comprehensive understanding is had identical and luscious base and the character of the agent of much amine solidify with chemical different structure, characteristic, to choice solidify agent, it is very important. In hue respect, fat annulus a group of things with common features shallow, basically be transparent, and adipose a group of things with common features with scent a group of things with common features, its are chromatic level considers showing. In viscosity respect, also have very big different, fat annulus a group of things with common features do not cross zero Pa·s, and polyamide is very sticky stiff, amount to several Pa·s, amine of scent a group of things with common features is solid state more. As it happens of working life accident and solidify sex are completely contrary, adipose a group of things with common features reactivity is tall, and fat annulus a group of things with common features, acyl amine, scent a group of things with common features is ordinal reduce. Hue: (Actor) fat annulus a group of things with common features → is adipose a group of things with common features amine of scent of → of → acyl amine (bad is ripe degree: (Low) fat annulus a group of things with common features → is adipose a group of things with common features → is balmy a group of things with common features → acyl amine (tall working life: (Long) → of scent a group of things with common features acyl amine → fat annulus a group of things with common features → is adipose a group of things with common features (short solidify sex: (Fast) adipose a group of things with common features → fat annulus a group of things with common features → of → acyl amine is balmy a group of things with common features (slow excitant: (Strong) adipose a group of things with common features → is balmy a group of things with common features → fat annulus a group of things with common features → acyl amine (the chemical structure of agent of solidify of weak much amine and property are additional, in burnish, plasticity, stick receive gender, acid-proof sex, be able to bear or endure respect of ability in swimming, also show certain regularity. Burnish: (Actor) → of scent a group of things with common features fat annulus a group of things with common features → polyamide one adipose amine (bad plasticity: (Soft) polyamide → is adipose a group of things with common features → fat annulus a group of things with common features → is balmy a group of things with common features (just stuck receive a gender: (Actor) polyamide → fat annulus a group of things with common features → is adipose a group of things with common features → is balmy a group of things with common features (fine is acid-proof quality: (Actor) → of scent a group of things with common features fat annulus a group of things with common features → is adipose a group of things with common features → polyamide (bad is able to bear or endure ability in swimming: (Actor) polyamide → is adipose amine → amine of scent of → of fat annulus amine (the chemical structure of agent of solidify of fine much amine and the property with condensate of colophony of double phenolic A are right for burnish, scent a group of things with common features is good, adipose a group of things with common features difference. This property suffers the effect of solidify temperature, lift along with temperature, burnish ameliorates. As to plasticity, luscious base span is a few more admirable from long polyamide, and the balmy amine with cross-linking high density is poor. Hear resistance and plasticity as it happens are contrary, and stick receive sexual criterion and plasticity to agree. Be able to bear or endure sex of medicines and chemical reagents (acid-proof sex) suffer chemical structure to affect, scent a group of things with common features is more admirable, adipose amine and polyamide suffer chemical easily to corrode. Be able to bear or endure ability in swimming suffers luscious matrix to measure pH indicator to control, low, scanty water spends chroma of luscious matrix quantity tall polyamide kind more be able to bear or endure water, and the scent with high concentration of luscious matrix quantity a group of things with common features a few poorer. Agents of all sorts of solidify of solidify agent with different utility can be divided by utility mix for agent of normal temperature solidify heat solidify agent. The place before be like is narrated, average performance is good when solidify of epoxy resin high temperature, but the coating that uses in building construction and stick it is difficult to receive an agent to because heat,wait, need normal temperature solidify; Use annulus of adipose amine, fat to mirror mostly so and polyamide, especially the coating that winter uses and stick receive an agent to must be used with ester of much surprise cyanic acid, or use those who have effluvial taste to get together Liu is mellow kind. As to in lukewarm solidify agent and agent of high temperature solidify, want with be being worn the hear resistance of the hear resistance of body and condensate, stick receive gender and be able to bear or endure sex of medicines and chemical reagents for fiducial will choose. The choice is much amine and acid anhydride mainly. Because acid anhydride condensate has good electric performance, use extensively at respect of electron, electric equipment so. Adipose a group of things with common features much amine condensate is stuck receive gender and alkali resistance, be able to bear or endure ability in swimming all admirable. Much amine of scent a group of things with common features is in be able to bear or endure respect of sex of medicines and chemical reagents also is admirable. Because amino azotic element and metal form hydrogenous key, have admirable antirust effect consequently. Amine mass concentration heals tall, antirust effect has healed. Agent of acid anhydride solidify and epoxy resin form ester key, showed high strength to organic acid and inorganic acid, electric function also exceeded much amine commonly. Acid anhydride kind the reaction of epoxy resin of solidify of acid anhydride of of mechanism of solidify agent solidify, need colophony / in acid anhydride system a few the accelerant such as acid of alcohol and water, dissociate, via heating the solidify with slow ability. Accordingly, acid anhydride is not direct with annulus oxygen radical action produces chemical reaction, must open the annulus of acid anhydride. , lively hydrogen contains hydroxyl in oxygen of annulus of double to the influence of acid anhydride open loop phenolic A, can open acid anhydride. One hydroxyl produces a carboxyl group, multivariate alcohol can join element of two acid anhydride rise, have cross-linking effect. Join if the glycol, glycerine, small element that contains hydroxyl gets together,contain hydroxyl compound ether, can quicken open loop reaction, water can make acid anhydride produces two carboxyl group, because this humidity is right acid anhydride solidify is influential. Ester converts reaction: This is the main reaction of epoxy resin of acid anhydride solidify, carboxyl and annulus oxygen radical addition, generate ester radical. Ester turns the carboxyl group that reaction makes, make further acid anhydride open loop, with annulus oxygen radical reacts, have a youthful look is into stereo structure; below high temperature, a few carboxyl are OK catalytic annulus oxygen base open loop, build the structure that gives priority to with ether key. , 3 class amine (amine of father's younger brother) to the influence of acid anhydride open loop 3 class amine and acid anhydride form an ion to be opposite, annulus oxygen base insert this ion to be opposite, carboxyl anion opens annulus oxygen base, make ester key, produce a new anion. For example 2- second base - Zun of 4 methylic Mi and 2, 4, 6-(N, n-2 methylic ammonia is methylic) — phenol namely K-54#(abroad weighs DMP-30#) . 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