The occurrence that avoids pneumatic tire solved traditional pneumatic tire to become flat. Flat. Need to maintain regularly, cannot bear acuteness the question that impact. Compare at traditional pneumatic tire, avoid pneumatic tire to have following advantage: ? Zhao Yun is handsome ⒅ uncut jade of dizzy Piao of  of ニ of straightforward advice of  of Gan of Weng of ⑽ of ァ of Zhan Meng of curtain ⒐ ひ does 3 banner deceive rely on? of palm  buy? ? Avoiding pneumatic tire is with high polymer elastomer is spoke, through the structure design and elastomer oneself function achieve quality of the automobile body that prop up to reach be out of shape the destination that attracts shake. The elastomer that applies at avoiding pneumatic tire needs to have the following character [1]:(The tigidity with certain 1) , can rise to support automobile body action (the tenacity with certain 2) , achieve alterable form to absorb shock, raise travel the purpose of comfortable sex (3) appearance remembers a gender, after tire load is out of shape recoverable, ask the tigidity of material is mixed namely flexible must achieve proper balance (the fatigue resistance with good 4) can, in tire load travel, elastomer needs to bear ceaseless drawing - reduce a circulation. ? ? Get together double-loop the fifth of the ten Heavenly Stem 2 Xi? PDCPD is a kind firm soft and the high polymer material of aid, by double-loop the fifth of the ten Heavenly Stem 2 Xi (DCPD) passes open loop easy a polymerization (ROMP) reaction is made. Its monomer DCPD basically originates oil splitting decomposition makes the component of C3 heat up in a steamer in ethylene and by-product of coal coking plant, have source the advantage with extensive, low price in addition, because the monomer DCPD viscosity of PDCPD is low, because this applies to reaction,inject shapes craft, injection process need not charge mould pressing force exorbitantly, and can shape the products with preparation sophisticated appearance. At the same time PDCPD still is had be able to bear or endure exceedingly goodly soda acid sex and be able to bear or endure ability in swimming. Above advantage makes PDCPD has tremendous latent capacity in the application that avoids pneumatic tire field. But PDCPD is a kind of project plastic, to not the PDCPD of modified, its are basic and mechanical performance is not outstanding. Should make its applicable at avoiding pneumatic tire in, still need to pass change its cross-linking rate or introduce flexible the elastomer that the structure is its modified a kind of function to satisfy requirement [2] . ? ? 01 1. Does each other wear a network modified? Consistence introduces in PDCPD taller flexible high polymer material, include the elastomer such as balata and polyurethane, form each other to wear network structure with PDCPD (see figure below) . Is specific means: ?  Lou wishs Le is swollen hard Mu Xianfu badger falls in ヌ Zuo CPD, leave group in appropriate condition next.

02 2. Tall cross-linking modified? Pass introduce cross-linking agent or the cross-linking that freedom radical initator will come to increase PDCPD appropriately is spent. Pure DCPD is a kind of cross-linking spends inferior colophony, because this is mechanical performance is poorer. In applying actually, can spend in order to raise its cross-linking through adding person cross-linking agent, make PDCPD is in thereby mechanical and be able to bear or endure lukewarm performance side satisfies actual application. 03 3. Polyurethane graft modified? What can accuse to opposite element quality is flexible high polymer material, include polyamide ﹑ fragrant fishing line. Polyurethane, its two end use molecular chain fall borneol Xi Feng Duan, in order to gift the ability of its and DCPD copolymerization. Below activator action, flexible high polymer material and PDCPD form whole three-dimensional cross-linking structure [3] . The function of modified hind PDCPD? From the watch 1 can you see: ? Photograph of DCPD of Jia hammer male Yu is compared, each other wears the drawing model quantity of network modified PDCPD. Tensile strength, rupture percentage elongation and the drawing model quantity that fight impact strength to raise; to pass the PDCPD of tall cross-linking modified of the sort that adjusts cross-linking agent and dosage somewhat, curve modular quantity. Flexural strength, fight impact strength and be able to bear or endure lukewarm function all raises PDCPD of modified of; polyurethane graft rupture percentage elongation and fight impact strength to rise considerably, other and mechanical function also is improved somewhat. ? ?