Shanghai Daoqin Plastics Co., Ltd.

currently, world combined formed viscous agent development trend performance is environmental protection and high property can 化[1]. environmental protection regulations day 趋严格, 各发达国家 large force made water property viscous agent. due to water property polyurethane ester viscous agent comprehensive property can excellent 越, in type water property viscous agent in 独树一帜, in recent years to inner outer 广泛关注, especially is high property can water property polyurethane ester viscous agent development research already formed is hot 点课题[2-6]. 1, water property polyurethane ester water property polyurethane ester is made water property polyurethane ester viscous agent material and key/critical separation, it property can 直接决定胶 viscous agent most property can. according to pellets belt/tape electrical types type, water property polyurethane ester can separation is anionic 离子, cationic 离子, non 离子三 types type type. water property polyurethane ester made generally is combined formed molecular weight polyurethane ester poly 体, rear in force function lower will poly dispersion in water in. currently its made methods hydrophilic water mono expand 链, emulsification method is 主(谓 hydrophilic water mono expand method), in polyurethane ester poly separation structure in hydrophilic water property expand agent, polymer outer add emulsification agent can dispersion water in formed water property polyurethane ester. hydrophilic water mono expand method combined formed process has solvent agent method, poly material dispersion water in expand method, melt dispersion polycondensation method and other. in 四, year 代, water property polyurethane ester already has a small amount of research, due to stability property and other causes, this research as 进展不 large, to 1972 year Germany Bayer company positive will polyurethane ester water dispersion liquid as is leather coating material rear, 才开始迅 speed development [8]. 据报道, 1992 year 至1997 year water property polyurethane ester year growth rate is 8％[9]. from 70 year research water property polyurethane ester, in recent years research as separation active 跃[10]. made as tool has below/following features: (1) from product structure 看, main/primary is emulsion type, water solvent property 次之, type Common. (2) from raw materials 看, more alcohol main/primary use polyether type, polyester type 次之, polycarbonate (PC) less 见. acid ester product types more less, has TDI, HDI, MDI仅见报道. expand agent more use alcohol type, amine type relatively less use. (3) from made methods and types type 看, generally is emulsification, acid type, anionic system; outer emulsification, acid type, salt type emulsification system relatively less; melt dispersion, solid 体自发 dispersion method and other 则未涉 and. (4) from and application degree 看, heavy application development, research very less. made high property can water property polyurethane ester viscous agent, must made high property can water property polyurethane ester. large more water property polyurethane ester main/primary is property thermoplastic polyurethane (TPU), due to its coating film has crosslinked, molecular weight relatively low, resistant water property, resistant solvent agent property, film strong/high degree and other property can also relatively 差. is improve/increase water property polyurethane ester property can, must for its modified. 2, water property polyurethane ester modified from water property polyurethane ester made process process 看, polyurethane ester poly separation structure for water property polyurethane ester most property can has property effect/influence. therefore its modified main/primary from poly upper 做文章, through 改变预 poly separation structure, molecular weight large small and other and other factors to modified 目, to high property can water property polyurethane ester. 2．1 combined formed poly raw materials selection polyurethane ester poly combined formed raw materials main/primary is oligomer more alcohol and 二异氰 acid ester. oligomer more alcohol usually separation is polyether more alcohol and polyester more alcohol type, polyether more alcohol made poly has good hydrolysis stability property, relatively good flexibility property and property, low temperature resistance property can good; polyester more alcohol type poly inner poly force large, bonding strong/high degree high. outer water property polyurethane ester product generally is polyester type, inner polyether type is 主. has 文献报道[2], 以一定 ratio/proportion polyether more alcohol and polyester more alcohol mixed combined material is raw materials made poly property can relatively is 理想. another, oligomer more alcohol molecular weight and can degree for poly property can has very large effect/influence, in poly separation in 引入部 separation molecular weight amount can degree polyether, can increase poly separation crosslinked degree, from improvement water property polyurethane ester resistant water property. 二异氰 acid ester separation is aromatic and aliphatic (or ring 族)两 type. aromatic 二异氰 acid ester combined formed poly has relatively high strong/high degree, resistant yellowing, aliphatic 二异氰 acid ester due to separation structure in 不含不 saturated and di 键, its made poly resistant yellowing property can excellent 良. due to raw materials product types made, inner water property polyurethane ester use 二异氰 acid ester raw materials 以TDI is 主, outer aliphatic (or ring 族) is 主. polyester more alcohol product grade more, especially is combined water property polyurethane ester grade more add dilute less, 而异氰 acid ester more is main/primary Imported. 但随 我国 add 入WTO, versus this can is from raw materials improve/increase water property polyurethane ester property can 创造良 good conditions. remove oligomer more alcohol and 二异氰 acid ester outer, combined formed poly raw materials in also commonly used to small separation expand agent, generally has amine type and alcohol type types. amine type expand agent and acid ester reaction active property high, formed material is polyurethane ester 脲, 脲键 存 in make film hard, modulus increase large. commonly used amine type has amine, ethylene amine, ethylene amine and other. amine type expand agent generally in poly emulsification meanwhile add 入, emulsification, expand 链. has patent 报道[11], use mixed combined amine type expand agent made water property polyurethane ester dispersion liquid bonding property can excellent 良, 玻璃化 temperature degree relatively high. alcohol type expand agent has 1, 4- butanediol, ethylene glycol, shrink ethylene glycol and other, inner has research alcohol type expand agent for water property polyurethane ester property can effect/influence [12], use can degree alcohol type as expand agent can improve/increase film resistant water property. hydrophilic water property expand agent to poly separation in is made water property polyurethane ester key/critical steps 之一. currently water property polyurethane ester anionic type, emulsification is 主[8], anionic type water property polyurethane ester separation is acid salt type and acid salt type type, in application relatively more is acid salt type. 含羧基 hydrophilic water expand agent — generally has 二羟基 semi ester (简称 semi ester) and 2, 2- di 羟甲基丙 acid (DMPA). DMPA molecular weight small, relatively less use amount can provide more 羧基当 amount. in research in 发现, due to DMPA is solid 体, melting point relatively high, in reaction process in generate non-uniform phenomenon; semi and more alcohol versus property good, use amount large, to water property polyurethane ester film viscous. 以DMPA is hydrophilic water property expand agent in outer non 常流行. inner DMPA 源曾一 degree Imported, in recent years, inner already has injection molding processing processing can production. comparison Imported DMPA and Domestic DMPA expand 链效果, Domestic DMPA property can versus 当不错. 2．2白 emulsification process emulsification process is made high property can water property polyurethane ester important effect/influence factors, 笔者结 combined 实际工 as 谈几点看 method: (1) emulsification temperature degree low high, ultra- 45℃. (2) formed salt agent has machine alkali type relatively combined 适, its use amount 应严格 control. (3) selection high emulsification equipment can to semi 功倍 效果. 2．3 its it modified above to through raw materials and process selection, can made separation and crosslinked water property polyurethane ester, drying solid generally 不发生 chemical reaction, this type of methods is inner crosslinked method, more used for mono separation system. also has outer crosslinked method, in use add crosslinked agent to water property polyurethane ester in, crosslinked agent and polyurethane ester separation 子发生 chemical reaction crosslinked, outer crosslinked method versus di separation system. currently, inner outer production water property polyurethane ester 几乎都 is mono separation, 90 year di separation water property polyurethane ester to heavy 视[13], its research focus/key point is decrease/reduce reaction, increase reaction selection property and in wet low temperature lower formed film. di separation water property polyurethane ester research main/primary in in Bayer company, OECE company, Miles company and other. use acrylic ester modified water property polyurethane ester, to third generation water property polyurethane ester ", in recent years formed is inner outer research hot 点[14-18]. third generation water property polyurethane ester tool has acrylic ester and polyurethane ester advantages, positive day formed is water property polyurethane ester modified important 途径之一. 3, additives high property can water property polyurethane ester viscous agent tool has below/following features: (1) resistant water, resistant property good. (2) bonding strong/high degree high, viscous force large. (3)良 good stability property. (4) resistant melt, resistant relatively high temperature degree. (5) drying speed degree relatively fast, low ring temperature degree lower formed film property good. (6)施工 process 佳. need to above 几点, remove combined formed high property can water property polyurethane ester outer, film additives selection is important. water property polyurethane ester additives main/primary has increase agent, leveling agent (wetting agent) and other. very more property can excellent 良 配胶 additives 都产自国 outer [19], 例如Borchers company BorchigelL75 increase agent, DIC company increase agent VoncoatHV and leveling agent Megafacf-812, USA gas company surface active property agent Safinol. inner in this also very 欠缺, this is development high property can water property polyurethane ester viscous agent need breakthrough bottle 颈之一. 4, 结束语 development high property can water property polyurethane ester viscous agent most target/goal is currently positive in a large amount of use high di separation solvent agent type polyurethane ester viscous agent. 随 我国 add 入WTO day 期 临近, versus in will,我国 research development high property can water property polyurethane ester viscous agent various raw materials can and to supply. China polyurethane ester industrial 协会翁汉元秘书 long in polyurethane ester industrial "十五" development 规划建议 in, to water property polyurethane ester viscous agent is main/primary development direction 之一. inner 同行齐心协 force, is shrink short high property can viscous agent and world 发达国家 差距 as 出贡献.