不干膠的動作原理ppt31)-經(jīng)營管理-免費閱讀
【正文】 O u t d o o r?? S ig n ifi c a n tly i m p r o v e d“ WET TI N G ” p r o p e r ties?? Ex c e ll e n t b o n d to LS Ep la s tics?? G o o d a g in g cha r a c te r istic s?? Fi ll s g a p b e tw e e n Ac r y li ca n d Ru b b e r a d h e s iv e s?? Lim ited c h e m ica l a n d U .V.r e s ista n c e?? Lim ited te m p e r a tu r ep e r fo r m a n c e(4 0 to 2 5 0 ? F)S il ico n e I n d o o r amp。O u t d o o r?? Br o a d tem p e r a tu r ep e r fo r m a n c e(1 0 0 to 5 0 0 ? F)?? Ex c e ll e n t Du r a b il ity?? H ig h co s tRubber vs Acrylic Adhesives Bond Build Up 駐留時間 Dwell Time 丙 烯 酸 類 Acrylic Adhesion Level 粘黏力 駐留時間丙 烯 酸 類Adhesion Level 橡膠類 Rubber 丙烯酸膠的化學(xué) Acrylic Adhesive Chemistry ? 交連結(jié)構(gòu) Crosslinking ? 增粘處理 Tackification ? 不同的聚合物基體 Various polymer backbones No crosslinking Highly crosslinked Increasing Crosslinking : ? Improves temperature resistance ? Provides short dwell repositionability on plastics ? Increases solvent resistance ? Improves die cutting and handling Crosslinking ? Tie polymer strands together No tackifier Maximum tackifier Increasing Tackifier: ? Increases adhesion ? Decreases temperature resistance ? Decreases solvent resistance ? Increases softness/oozing Tackification ? Adding resins to increase the adhesion to low surface energy materials Static Shear Area : ?X 1? Load : 1,000g room temp. 500g 158 deg. F Crosslinking vs Shear 200 220 100 400 9502, 9505 200MP 1,000 6,000 10,000+ 20 4,000 10,000+ Increased Crosslinking Increased Crosslinking Crosslinking vs Shear 310 300 350 300LSE 1,000 1,000 2,500+ 10 10 2,500+ Static Shear Area : ?X 1? Load : 1,000g room temp. 500g 15
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