不干膠的動(dòng)作原理ppt31)-經(jīng)營(yíng)管理(參考版)
2024-08-19 21:23本頁(yè)面
【正文】 Peel 。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(shí)間 Dwell Time 丙 烯 酸 類 Acrylic Adhesion Level 粘黏力 駐留時(shí)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 158 deg. F ASTM D3330 90 degree, 72 hour room temp dwell * Typical values not for specification purposes Adhesive Stainless ABS Polypropylene (2 mil) Steel 100 92 73 13 200MP 103 57 22 350 63 61 39 300LSE 73 72 70 300 72 83 52 Adhesive Peel Performance 粘接不牢的各種因素 What Causes Bond Failure? ? 不乾膠與背材的相互作用 AdhesiveSub
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