不干膠的動(dòng)作原理ppt31)-經(jīng)營(yíng)管理-文庫(kù)吧資料
2024-08-23 21:23本頁(yè)面
【正文】 strate Inpatibilty ? 表面結(jié)構(gòu) Textured Surface ? 表面污染 Surface Contamination – 離型劑 Mold Release, 塵埃 Dust Particles ? 增塑劑的遷移 Plasticiser Migration – 軟質(zhì)聚氯乙烯 Flexible PVC, 橡膠 Rubber ? 殘留水份 Outgassing of Moisture – 聚碳 Polycarbonate 表面污染 Surface Contamination ? 油脂 , 指紋 , 水 , 油 和注塑用的離型劑 Grease, Finger Print, Moisture, Oil, Mold Release Chemicals – 防止膠與背材接合 Create a barrier bewteen adhesive and substrate ? 塵埃 , 石粉 , 纖維持等 Dust, Talc, Fiber, Particle Contamination – 影響膠的黏性 Affects tackiness of adhesive – 減少有效的接觸面積 Reduce contact surface area 剝離力與剪力的測(cè)試 Peel vs Shear Test 剝離力 Peel 衡量 measures 粘黏力 Adhesion 剪力 Shear 衡量 measures 內(nèi)聚力 Cohesion 剪 力 Shear Strength ? Shear measures Cohesion the internal strength of adhesive ? Typically – Soft Adhesive Low Shear – Firm Adhesive High Shear – Thick Adhesive Low Shear – Thin Adhsive High Shear 靜 態(tài) 剪 力 Static Shear Strength ? Time Required to shear a defined area of tape from a test panel at constant load ? Variables – Load – Test Panel Material and Surface Conditions – Temperature Load Tape Test Panel 動(dòng) 態(tài) 剪 力 Dynamic Shear Strength ? Force Required to shear a standard area of tape from a test panel at constant speed ? Variable – Speed – Test Panel Material and Surface Conditions – Temperature 剝離力 Peel Strength ? Peel measures Adhesion the bonding strength of adhesive ? Typically – Soft Adhesive High Peel – Firm Adhesive Low Peel – Thick Adhesive High Peel – Thin Adhsive Low Peel 靜 態(tài) 剝 離 強(qiáng) 度 Static Peel Adhesion ? Time Required to peel a defined length of tape from a test panel at specific angle at constant load ? Variables – Load – Test Panel Material and Surface Conditions – Temperature 動(dòng) 態(tài) 剝 離 強(qiáng) 度
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