1, low systoleVinyl colophonyester colophony regards development vinyl as category of resinous of not saturated polyester, active is taller, solidify response rate is rapidder, there is bigger solidify shrinkage after causing solidify of vinyl ester colophony, colophony of general not saturated polyester (include groovy vinyl resin) the systole when solidify is bigger, the put oneself in another's position that can obtain 7-10% to control is contractive, rise as what ask domestic and internationally to high-powered colophony technology, the hope searchs the vinyl ester colophony with a few contractive and inferior solidify, this is initial stage of a 21 centuries domestic and international the technology that a lot of manufacturer seek hard breaks through a dot. Mechanism of low contractive resinous is relatively complex, and so a few manufacturer contract to overcome resinous solidify, through adding low contractive additive (LPA) the method will achieve a goal, but the limitation that its apply, and more manufacturer are to try hard to synthesize method and molecular design level to come up through colophony solve this technology problem, exceed vinyl of oxygen of small contractive ring loop of the enough mechanical strength that ester colophony has with its and stiffness, enough dimension stability, heat-resisting, anticorrosive the requirement of the product of contented high quality FRP with distinctive better performance. 2, impulse withstand model ester uses vinyl of vinyl ester colophony at present much circumstance is anti-corrosive circumstance, but because more intermediate hydroxyl is had in vinyl colophony, can improve rightFibre glasswet sex and caking property, raised a layer to combine the mechanical strength of goods; Other explicit member two upright cross-linking, because this element catenary is below stress action OK and stretchy, in order to absorb outside force or thermal shock, show be able to bear or endure small crack or craze. Accordingly, vinyl colophony learns in high power of a few demands function, impulse withstand get applied in the circumstance, but groovy vinyl colophony learns to pound a respect in endurance or remain at what rise, use the resin of a few vinyl of modified of rich horse acidity especially, because density of cross-linking of solidify of this type resinous is high, the molecular catenary between cross-linking dot paragraph shorter, impact resistance can be so poorer. In these resinous synthesis designs, requirement colophony element advocate the ether key on catenary is more, can increase resinous impact resistance adequately so, appeared again 2013 additionally one kind of means, be in namely through balata modified, use balata of upright carboxyl fourth nitrile namely (CTBN) with fourth nitrile balata (BNR) add pliable but strong vinyl of oxygen of methylic acrylic acid annulus ester colophony, domestic and international after this also hind kind the method made not little work, resinous of vinyl of natural balata modified is outspread rate get substantially rise, can achieve 12% . Impact strength of general vinyl resinous (without breach) do not be more than 14.00 KJ/M, and of new development of a few 21 centuries impulse withstand model can colophony of vinyl of blame balata modified achieve 22 KJ/M? Above, can the vinyl colophony of balata modified achieve 25KJ/M? , such these are impulse withstand the application with vinyl OK and very good colophony is made at a few FRP that Gao Naichong attacks, wait like helmet of athletic blowmobile, motion. 3, add stiff serve as a kind of high-powered not saturated colophony with vinyl ester colophony, vinyl resinous adds the way that stiff character is each manufacturer research all the time, because the distinctive application character of BMC/SMC gets,this is of broad client approbate, the application that goes up in car component as BMC/SMC especially, add stiff model vinyl colophony can more general not saturated colophony bears taller wallop, have the good denaturation that fight squirm and fatigue resistance. These component include wheel, seat, medicinal powder mouth of heat wearing, bar board, engine a powerful person or family is covered etc. Of course, add stiff model vinyl colophony can apply extensively at report insulation, industrial of pump valve make, golf first class. Add as a kind stiff with vinyl colophony, natural requirement colophony has the following characteristic: ① and the good wellability that enhance material and filling; Initiative low viscosity mixes ② to add stiff character quickly; The mechanical character with good ③ , include tenacity and be able to bear or endure fatigue character; ④ deposits cycle longerly; The solidify radiative peak with inferior ⑤ and inferior styrene volatilize etc. To achieve use result, in research of vinyl resinous synthesis, more current before method is: Acidity and luscious group introduces on vinyl ester element (carboxylic acid) , recycle these carboxyl and alkaline-earth metal oxide (wait like calcium of magnesian, oxidation) , but this kind of method adds stiff time to grow, need time a few days commonly, besides sensitive to water content. Also developed additionally one kind of method from this, use namely get together salt of different cyanic acid and multivariate mellow reaction in order to produce reticulate structure, achieve resinous thereby fast stiff change, this method can agree with low pressure shapes, have viscosity to control the characteristic with stable, low to requirement of temperature and humidity, long storage period, the characteristic with high intensity is united in wedlock between the layer of goods at the same time, also can use the colophony of low acid value that takes excessive alcohol to make stiff dose at the same time. 4, high temperature resistant model framework of element of resinous of vinyl colophony vinyl is epoxy resin, if use phenolic aldehyde epoxy resin to serve as raw material, criterion colophony of complex NOVOLAC vinyl has good corrosion resistance, solvent resistance to reach high temperature resistant model, we to the vinyl of oxygen of phenolic aldehyde annulus of domestic and international famous manufacturer ester colophony presses relevant specification test, the result makes clear, these resinous heat are out of shape temperature (HDT) all be between 132-137 ℃ , and the resinous of vinyl of oxygen of phenolic aldehyde annulus of a few manufacturer of domestic is hot be out of shape temperature is lower, want under 125 ℃ , but in application of practice of a few industry, raised taller requirement to resinous hear resistance, and colophony of the tall cross-linking thickness that manufacturer of domestic and international minority provides 21 centuries initial stage vinyl the heat of 898 is out of shape temperature can achieve 150 ℃ above, structure of element of this type colophony already made modified, optimized resinous heat-resisting character, styrene content also made reasonable shift contented and effective use demand. Colophony of groovier vinyl of oxygen of phenolic aldehyde annulus is had taller be able to bear or endure lukewarm temperature, can apply for a long time at the strong corrosion environment of 200 ℃ gas phase, at the same time our use experience makes clear, this type colophony can bear inside 2-3min the temperature concussion of 300 ℃ , should applying distinctly is insulation application in, can achieve above of grade of C class insulation completely. This type colophony can apply extensively at to decoke of a few smelt, electric power (FGD) the high temperature application such as equipment, wait like cooling tower, chimney and chemical conduit, at the same time this type colophony also is had be able to bear or endure the characteristic of medium of strong solvent, strong oxidisability. 5, photosensitive vinyl colophony because the not saturated Shuang Jian in vinyl colophony resinous is carried in molecular catenary, because active is taller, deserve to be designed with the element at the same time, if use the epoxy resin that oxygen of tall be surrounded by mountains is worth, use acrylic acid to replace methylic propylene base the vinyl colophony after acerbity synthesis, join smooth initator (aether of marriage of the Kun that be like benzene, benzene idol) , in order to draws ultraviolet energy, transfer colophony system, and make vinyl colophony undertakes aggregate solidify. This kind of colophony can be used at pressworking, photosensitive printing ink, use as on painter course of study photosensitive coating, the light that makes PCB go up is used to deliver the film that fight corrode in radio industry. Additional, in helping crowded technology, if use photosensitive vinyl resin, criterion but huge rises pull crowded rate, in if be pulled in cable core,pushing technology, speed can achieve 10m/min. 6, gas drying vinyl ester colophony and colophony of not saturated polyester are same, when normal temperature solidify, goods surface has tacky appearance, bring inconvenience to application. Because the oxygen in air attended the aggregate reaction of surface of vinyl ester colophony,main reason is. To overcome this weakness, researcher development went a variety of effective methods. Among them one of use namely Xi propyl aether is received in structure of vinyl ester colophony (CH2=CH—CH2—O— ) base round method will synthesize gas drying vinyl ester colophony. This kinds of colophony agrees with make makings of gel coat of high-grade gas drying, coating, cover wait. Notable is Xi propyl aether the content in colophony has one appropriate value, too small colophony cannot absorb oxygen well, as a result of “ automatic block gets together too big ” action, gas drying also can drop. 7, low styrene volatilizes technical vinyl colophony contains 35% styrene monomer of the left and right sides commonly, and the evaporate steam pressure of styrene is inferior, in because this shapes in hand paste,shaping with eject, colophony is one layer upon layer shakedown answer on mouth mould, especially eject shapes, colophony becomes mist state partly, be in consequently colophony is sufficient before solidify, styrene is sent from the brandish in colophony ceaselessly, such is in cause styrene losing at the same time, was to pollute an environment more, also was to cause the health to the worker to damage, because this each country raised liminal to styrene cost in succession (TLV) requirement, because the not saturated colophony of this attenuant to be with styrene monomer includes vinyl resin, should seek a kind of low styrene to volatilize hard technology (LSE) in order to solve this problem, so a few manufacturer are mixed use add olefin to wait as volatilize depressor, but easy cause lay up between statified, but the trend of inchoate to 21 centuries development is: It is the compound that uses a kind of adherent accelerant, can be acrylic, belt 2 alkyl (the scanty water aether that contains Shuang Jian or ester) etc; 2 it is to use evaporate steam pressure relative to taller monomer, wait like methylic styrene or vinyl toluene; 3 it is the means such as molecular structure, or it is to be in maintain overall performance while make advocate of catenary element shorten, in order to reduce styrene dosage, or it is to pass in molecular catenary paragraph on introduce other radical group or catenary paragraph, those who make the between ministry element interaction inside colophony reduces styrene further volatilize etc. On old research and experiment foundation, the low styrene that a lot of production business rolled out each to have distinguishing feature in succession on is volatile technology. This technology can apply extensively at the respect such as colophony gel coat, insulation application, be in especially in the insulation application that high temperature shapes. 8, develop of vinyl colophony breed is changed current, vinyl colophony because in all better anti-corrosive character and improved craft character, and a large number of successful application at anticorrosion circumstance, include anti-corrosive FRP is made, anticorrosion project, but in a few blame anti-corrosive when the circumstance has the composite material that high mechanical performance asks to make, at present domestic and international client can choose colophony of annulus oxygen vinyl only, created colophony application or the waste that design actually, because this is a few more domestic and international,manufacturer searchs a kind to maintain vinyl resinous in effort the new-style material of mechanical function, reasonable cost, partial company rolled out a kind of new-style high-powered not saturated colophony in time through new research and development, call vinyl polyester colophony, english name is Vinyl Polyester Resin, domestic abbreviation “VPR“ , this colophony is integrated vinyl ester colophony and characteristic of general not saturated resinous, let an user have more choices thereby. Colophony of VPR vinyl polyester is the colophony of not saturated polyester of the special structure that a kind of dissolve contains not saturated Shuang Jian at styrene fluid, colophony of VPR vinyl polyester is had better be able to bear or endure corrode function, the benzene between excel not saturated colophony, mechanical function and colophony of vinyl of oxygen of standard type annulus comparative, especially fatigue resistance can be mixed dynamic load function; Additional, more general colophony, polyester colophony has VPR vinyl to be able to bear or endure goodly again await function, at the same time colophony of VPR vinyl polyester has good Bo towing tie again infiltration function and technical properties, agree with all sorts of FRP shape craft, include fiber to twine, help all sorts of composite material technology such as paste of crowded, hand, eject. Because resinous of VPR vinyl polyester is distinctive function and relatively reasonable cost, make this new profile makings has wide applied perspective: The reinforcement of glass reinforced plastics in ① concrete; The structural material in ② shipping goods; Product of ③ large FRP makes medium structural layer material, in rectifying body spot big pot to make especially, replace constant layer of structure of compasses vinyl colophony; ④ is able to bear or endure fatigue FRP draws crowded profile, wait like athletic FRP horizontal bar. More information pays close attention to Www.cnfrp.com of composite material website please
Vinyl resinous future develops way
