Shanghai Daoqin Plastics Co., Ltd.

bonding technology is made production in key/critical technology 之一, bonding technology formed 败直接 effect/influence to quality and its lifespan. bonding quality good bad main/primary 决定于胶 viscous agent formed and made, meanwhile 亦不容 overlook its bonding process. 　1．胶 liquid made (1) solvent agent formed made liquid 应严格 selection combined solvent agent, 首先考虑 is polyurethane ester in solvent agent in solvent understanding property and solvent agent 本身 挥发 degree. solvent understanding property can according to solvent understanding degree parameters versus 近 原则 确定. solvent agent speed degree need 恰当, viscous process 而定. speed degree fast, easy in by viscous material surface film, retardant internal solvent agent 继续蒸发. gas in wet degree large 时, due to absorption hot amount, also easy in surface water 珠, effect/influence bonding quality. generally using/adopting mixed combined solvent agent, its is is improve/increase polymer in solvent agent in solvent understanding property, make most 佳状态; is can 借助挥发 speed degree and high low versus combined solvent agent adjustment viscous agent can use time. in use in, also 需考虑 solvent agent property and price. made use polyurethane ester commonly used has machine solvent agent material property lower table/sheet. table/sheet made use polyurethane ester liquid commonly used has machine solvent agent material property solvent agent solvent understanding degree parameters, SP property separation 数, P 沸点, ℃ 挥发 speed degree, min丙 ketone acid ester ketone ring ketone 9．4 9．1 9．2 8．9 10．1 0．695 0．167 0．510 0．001 0．380 58．5 77．2 79．6 110．6 155．6 3．5 4．3 5．4 6．6 14．6 注: polyurethane ester solvent understanding degree parameters is 10. *挥发 speed degree methods is 取5g solvent agent in 58℃ lower full time (min). 　　配 made use polyurethane ester liquid use mixed combined solvent agent formed (quality ratio)如 lower, can 供参考: 　　①甲苯: ketone: ketone: 35: 25: 25 　　②甲苯: ketone: ring ketone: 35: 30: 15 　　③甲苯: ketone: acid ester: 5: 2: 3 　　④丁 ketone: ketone: l: 1 　　⑤丁 ketone: ketone: ring ketone: 50: 33: 2 　　⑥丁 ketone: ketone: acid ester 二25: 30: 30 　　⑦丙 ketone: acid ester 二65: 17　(2) solid content about/regarding liquid in solid content (％), production use polyurethane ester viscous agent injection molding processing processing 家, generally control in 15％ left right, outer injection molding processing processing generally control in 18％ left right. liquid in solid 体, main/primary is polyurethane ester elastic property 胶粒, outer also add other additives, formulation in add 1％ nano oxidation silicon （VK-SP15）, not only can improve/increase use polyurethane ester （PU）胶 viscous agent adhesion strong/high degree, also can make water stability property large large long. is nano oxidation silicon （VK-SP15） in viscous agent and agent system in uniform dispersion rear, can formed 一 二 oxidation silicon poly 集体网络, poly through surface silicon alcohol 基（Si－OH） and polymer separation formed hydrogen 键, make system flow property to made, system viscosity increase, from to increase function, meanwhile, in force function lower, hydrogen and oxidation silicon 网络受 to bad, system viscosity decline, 即发生触变效应, 便于施工, 一旦剪切 force remove, oxidation silicon and hydrogen also heavy new formed. from has anti 止PU胶储存期间 沉 drop and use process in 流挂. 　(3) viscosity use polyurethane ester viscous agent viscosity generally is 1200-2000mPa?s(25℃). 　2． bonding process 　(1)鞋帮 and shoe sole 处理鞋帮(鞋面)如 is leather need machine 械打毛, PVC人造革 and PU combined formed can use agent coating 刷, dry rear coating 胶. shoe sole (large 底)若 is 橡胶, TPR, 仿皮底, 肉皮底 and other can using/adopting TCCA chlorine 化处理, can use coating agent 处理. PU, PVC, EVA shoe sole use coating agent 处理. 　(2) coating 胶鞋帮面 and shoe sole coating PU胶必 must coating uniform, generally coating is 0.2—0.5mm relatively 适宜. di coating amount is 18-26g(shoe sole 18-26g／ di, 鞋帮10-14g/ di). coating rear need let its drying 30min or outer 灯于50℃于燥20min, again 经70-80℃ hot active separation types (胶层呈 transparent 状)即 can add pressure combined, gas pressure (皮鞋 requirements 0.5—0.6MPa pressure)20秒钟, 经修整, rear 入库.