About biology base colophony of the sex that heat up solid
Biology radical heats up solid sex colophony basically is to point to wait with oil of element of amylaceous, protein, cellulose, carapace, vegetable a few natural but renewable resources is initiative raw material, colophony of sex of solid of a kind of when be changed through a series of chemistry, biology or physics and get new-style heat, the biology origin sex that pays attention to raw material and but second birth sex.
Biology radical heats up dimensions of solid sex resinous to turn application is implementation one of important steps that colophony of hot solid sex and composite material can develop continuously.
Biology radical heats up sort of solid sex resinous
Not colophony of the epoxy resin that colophony of sex of biology radical hot solid basically includes to be raw material with renewable resources, phenolic aldehyde, saturated polyester, benzene and Qin colophony.
01 biology base epoxy resin
Epoxy resin is one of colophony of sex of solid of 3 big general heat, the condensate of the earning after reacting with all sorts of solidify agents has excellent dimension stability, mechanical function, hear resistance and solvent resistance, apply extensively at the domain such as spaceflight, aviation, car and electron consequently.
Epoxy resin has biology radical cashew is phenolic base epoxy resin, plant is oily base epoxy resin, natural balata base epoxy resin and other live thing base epoxy resin.
Cashew is phenolic base epoxy resin is used as coating, car priming paint, the line in coal tub, bucket and conduit, electric equipment and electron enclose package, and the respect such as electric layer pressing plate. When be being used as groovy epoxy resin, but dissolve at common dissolvent, be like oil and benzene, coating can be in air dry, and do not need any high solidify doses.
The plant is at present oily base epoxy resin basically has oil of vegetable of soybean oil of oxygen of annulus oxygen castor oil, annulus and other annulus oxygen. These epoxy resin can be used directly, can fall in accelerant existence from polymerization, also can join solidify agent to undertake solidify.
Natural balata also is proved to be to be able to use a design sex of high-powered hot firm of epoxy resin valuable raw material. Through changing the rate that annulus oxidizes, annulus oxidation is natural balata can have different physical quality, be like Tg, stretch, damp, oily dissolve bilges and consistence. As a result of its good reactivity and consistence, natural balata can be in annulus oxygen intensifier or “ chemistry regard as ” thinner in different oil epoxy resin, also can regard a lot of polarity as polymer, if polyvinyl chloride, nylon is mixed,get together annulus oxygen ethane those who wait is solubilizing agent.
02 biology base phenolic aldehyde colophony
Phenolic aldehyde colophony has a few good character, be like good mechanical strength, hear resistance and dimension stability, and be able to bear or endure the ability of all sorts of dissolvent, acid and water. They are flame retardant substantially, low when burn smoke. Although phenolic aldehyde colophony cannot be mixed with epoxy resin,get together acyl inferior amine competes in high-powered polymer domain, their composite material still has broad market in the structural material of aerospace and railroad industry, this gets benefit to be mixed at their good hear resistance anti-flammability, be able to bear or endure admirably ablation sex and extremely low cost.
Colophony of biology radical phenolic aldehyde basically has cashew colophony of phenol radical phenolic aldehyde, lignin base phenolic aldehyde colophony.
Cashew is phenolic base phenolic aldehyde colophony is had be able to bear or endure outstandingly effect of mineral oil bate and acid-proof and alkalescent, in the meantime, the heat-resisting, function that fight report, fight microbial function and the performance that combat insect is superior, but tensile strength is relatively inferior.
Lignin base origin of phenolic aldehyde colophony is extensive, tigidity and impact resistance are good, but reaction active is inferior, show poorer compatibility sometimes with cross-linking agent.
03 biology base colophony of not saturated polyester
In numerous biology base in colophony of not saturated polyester, the plant is oily base colophony of not saturated polyester is among them by accepted have development perspective most, also be the earliest at the same time the direction of a research that is risen by development. The plant is oily base origin of raw material of resinous of not saturated polyester basically is all sorts of natural plant oil. Vegetable oil has the price cheap, origin is rich wait for an advantage.
But, because a large number of adipose catenary exist in plant oily construction, bring about a plant colophony of not saturated polyester shows oil radical very poor thermodynamic performance, use very hard as material alone. In recent years, the plant that has good thermodynamic performance for preparation oil radical is not saturated polyester colophony, domestic and international scientists were based on such purpose to do a lot of relevant works, pass chemical modified namely or the means that physics mixes in all to the plant oil radical introduces more inside system of colophony of not saturated polyester but aggregate luscious group, thereby preparation got the is based on vegetable oil live thing with better performance base colophony of not saturated polyester.
04 biology base benzene and Qin colophony
Benzene and Qin because its are stability of temperature of transition of low combustibility, tall vitrification, high fever, low dielectric constant, low surface can and superior agglutinate performance and be applied extensively. In addition, benzene and Qin colophony can be mixed easily by phenol, uncle amine 3 kinds of raw material pass formaldehyde condensation synthesizes Mannixi. Because nature is medium rich phenol kind with amino and chemical resource, this kind of distinctive synthesis method is benzene and Qin brought very agile structure to design ability. Above is all the advantage makes benzene and colophony of sex of Qin hot solid has wide applied perspective in high-powered domain.
Benzene and Qin has larger space on raw material choice, more and more researchers try to use but second birth raw material comes preparation biology base benzene and Qin colophony. Will tell commonly, benzene and Qin is made by phenolic, amine and formaldehyde condensation polymerization, among them formaldehyde can be made by raw material methanol, because this current and main focusing is in,the raw material raw material of phenolic source and amine source is replaced on, the researcher devotes oneself to to use with oil radical benzene synthesizes a method like Qin photograph, development gives relevant performance but with oil radical product comparatives higher even living things base benzene and Qin colophony.
Biology radical heats up solid sex resinous to apply foreground
Biology radical heats up solid sex colophony is one of material of biology radical high polymer indispensable main component. The acid-proof alkaline property that it has a tradition to heat up place of solid sex stuff to have not only, heat-resisting function and dimension stability, still can let material of traditional high polymer reduce the dependence of pair of petrifaction resource at the same time, have resource conservation and the double effect that protect an environment. Because this develops biology radical to heat up in order to of solid sex material energetically,replace a tradition result from cannot the oil of renewable resources base material of hot solid sex, have very important sense to realizing the green of high polymer material to be able to develop continuously.
In the application of green aviation and green composite material drawing falls, in the country foundation of science of 973 plans, country is mixed in the collaboration between Europe government (below the support of the project such as GRAIN2, ECOCOMPASS) , the much money that Liu Xiaoqing's researcher and collaboration of beneficial Professor Xiaosu will develop is high-powered colophony of sex of biology radical hot solid undertook applied actually demonstrative, involve the field such as things of traffic of civil aviation, orbit, culture. The result makes clear, integral performance of resinous of sex of biology radical hot solid can be achieved completely or have congener petrifaction more than base product, satisfy the use requirement of downstream composite material. These are high-powered biology base dimensions of colophony of hot solid sex changed application to lay solid foundation.
High-powered biology base resinous of hot solid sex uses demonstrative figure 4 for Mr. Liu Xiaoqing
Biology radical heats up solid sex resinous to reclaim
Because heat up solid sex colophony not dissolve not the character of frit, no matter be biology radical returns be oil radical, the material after shaping reclaims without method almost recycle. Accordingly, goods of deserted colophony of hot solid sex normally in order to burn, the form such as bury is handled, current, solve colophony of hot solid sex to reclaim the main method that uses an issue can converge it is two kinds: It is firstly reversible covalent bond introduces in cross-linking network, if Diels-Alder joins, inferior amine key, shrink alkyl of oxygen of annulus of aldehyde key, 3 Qin, ester radical, silicon, make cross-linking network can be decomposed below certain condition be young member and be reclaimed. It is the chemical join in be aimed at cross-linking structure secondly, design the splitting decomposition activator that special solidify reacts or develops specific aim, if use organic initator, increase dissolve to bilge degradation of rate, catalysis. And develop biology radical but the structural characteristic that key of resinous of sex of recuperative heat solid still depends on using biology radical raw material, can make colophony is in so assure to make battle function while, have can reclaim the latent capacity that use.
From biology base colophony of hot solid sex arrives functional sex carbon base composite material
Be based on old research experience and understanding, the essence that group of Liu Xiaoqing's researcher thinks biology base material expects is carbon of implementation opposite content is effective use. Biology radical resinous is synthesized, it is biology carbon changeover makes to have character actually the high polymer material of battle function, pass the structural particularity that develops biology radical monomer at the same time, obtain flame retardant, add pliable but strong, anti-fouling, fight the functional sex such as bacterium. Around “ carbon ” this masterstroke, group of Liu Xiaoqing's researcher put forward colophony of sex of a kind of hot solid to reclaim newly politic, pass simple laser ablation namely, difficult reclaiming biology base changeover of colophony of hot solid sex is carbon of functional sex biology, realize the appreciation application that its wait for a domain in electric, heat conduction, electric heat, catalysis, formed thereby heat up ” of solid sex colophony to arrive again to “ from ” of “ biology carbon the closed circuit of ” of carbon of “ function sex, resinous of sex of implementation hot solid can develop continuously.
For better understanding from biology base colophony of hot solid sex arrives carbolic radical of composite material change a course, forum of composite material of the 2nd 2023 green invites researcher of small blueness of Liu of place of stuff of peaceful wave of Chinese Academy of Sciences to arrive at congress, share " from biology base colophony of hot solid sex arrives carbolic radical composite material " thematic report.
Report content introduces
Our newspaper tells group of will brief introduction a few progress that in functional sex biology radical heats up solid sex colophony to synthesize a respect, the key is told about use laser the revulsive technology that become carbon will at biology base colophony of hot solid sex is changed for functional sex carbon base the job of composite material, elaborate with this to “ from ” of “ biology carbon ” of biology radical colophony arrives again the mind that closed circuit of ” of “ function carbon changes.
Expert introduction
Liu Xiaoqing, technology of material of peaceful wave of the Chinese Academy of Sciences and project institute researcher, doctoral student adviser. 10 thousand people plan selected nation excellent talent, Zhejiang saves the youth youth of plan of 10 thousand people is excellent talent, obtain Zhejiang to save foundation of science of prominent young person to support.
Basically be engaged in material of biology radical high polymer, colophony of sex of high-powered hot firm reachs his to derive functional sex material with carbon element, the research of environmental protection adhesive and development.
Be in charge of in last few years or core participates in a country the plan of plan of research and development of emphasis of foundation of science of 973 tasks, country, nation, state that prop up, Chinese Academy of Sciences is special the task of multinomial scientific research such as the task. In Nano Energy, ACS Nano, progress In Polymer Science, SCI is published to research a thesis on the world-famous periodical such as Macromolecules more than 100, h- factor 55, he makes the paper more than times 6200. Application China invents patent more than 90, accredit more than 60. All previous obtains China to produce learn to grind cooperative innovation award (first prize) , the Chinese Academy of Sciences is advanced specially appointed of science and technology member first prize, the honor such as first prize of collaboration of ground of courtyard of Chinese Academy of Sciences!
