Shanghai Daoqin Plastics Co., Ltd.

         front 言: heat stabilized agent as is PCV in commonly used additives 之一, for PVC product modified to can abrasion function. heat stabilized agent use separation less, function large, can ensure PVC in processing process in by separation understanding. below/following introduction types heat stabilized agent, from classification to function mechanism, belt/tape comprehensive understanding heat stabilized agent.

        一, is what need use heat stabilized agent

        PVC in 100～150℃时, outer light, machine force, oxygen, oxygen, chlorine hydrogen and active property metal salt and metal oxidation material and other in its separation understanding upper accelerated separation understanding speed degree.

         for PVC processing process 而言, hot separation understanding for its property 质改变不 large, main/primary is effect/influence formed product color, add heat stabilized agent can made product color property. in addition, if PVC hot separation understanding process in has oxygen gas in 话, will has 胶态炭, oxidation material, and ester combined material formed.

         that 么, is solution this type of phenomenon

        就 need in PVC processing process in add heat stabilized agent, this can in 一定程 degree upper through 取代PVC in unstable chlorine 原子, absorption chlorine hydrogen, and saturated and 部位发生 add formed reaction and other methods made PVC separation degradation.

        二, heat stabilized agent classification

        铅 salt type

        铅 salt type is PVC most commonly used heat stabilized agent, its use amount can 占PVC heat stabilized agent semi above.

         advantages: heat stabilized property excellent 良, tool has long heat stabilized property, electrical insulation property can excellent 良, weather resistance good.

         disadvantages: dispersion property 差, property large, has color property, difficult to transparent products, difficult to color color products, lubricated property, generate 硫, 隔污染.

        铅 salt type stabilizer types type:

        三 alkali acid 铅, separation is: 3PbO·PbSO4·H2O, 代号TLS, white powder 末, density 6.4g/cm³. generally and alkali 式亚磷 acid 铅一起并 use, lubricated property 而需配入 lubricant. main/primary used for PVC hard transparent products in, use amount generally is 2~7份.

        二 alkali 式亚磷 acid 铅, separation 子式: 2PbO·PbHPO3·1/2H2O, 代号DL, white powder 末, density 6.1g/cm³. its heat stabilized property low alkali acid 铅, weather resistance can good. and alkali acid use, use amount generally is alkali acid 铅 一 semi left right.

        二 alkali hard acid 铅, is DLS, 不如三 alkali acid 铅, alkali 式亚磷 acid commonly used, tool has lubricated property. and alkali acid 铅, alkali 式亚磷 acid use, use amount is 0.5~1.5份.

         is anti has powder salt stabilizer dispersion, heavy production ring 境, improve/increase stabilizer dispersion 效果, inner outer already development application composite/compounding salt heat stabilized agent. its manufacturing process is:

         in add hot and mixing/compounding conditions lower will has 协同效应 various salt stabilizer, heat stabilized agent and inner outer lubricant and other separation dispersion mixed combined rear made formed or sheet/slice salt composite/compounding stabilizer. will its 按一定份数添 add 于PVC resin in (不 again add its it stabilizer and lubricant)即 can to heat stabilized and inner outer lubricated process technology requirements.

         has material introduction, manufacturing 无尘铅 salt composite/compounding stabilizer, using/adopting salt stabilizer pellets fine micro, from and chlorine hydrogen reaction surface increase large. and inner outer lubricant 复配, make its dispersion property excellent 良, heat stabilized efficiency obvious improve/increase, use amount can decrease/reduce.

         metal type

         use amount 仅次于铅 salt large type stabilizer, its heat stabilized property 虽不如铅 salt type, has lubricated property, remove Cd, Pb outer 都无毒, remove Pb, Ca outer transparent, 无硫化污染, 因而广泛 used for soft 质PVC in, 如无毒 type, transparent type and other. metal type can is acid (month acid, hard acid, ring acid and other) metal (铅, 钡, 镉, zinc, and other) salt, its in hard acid salt most is commonly used, its heat stabilized property large small is: zinc salt >镉 salt >铅 salt >钙 salt /钡 salt. metal type generally mono use, is metal type between, or and salt and has machine and other use.

         metal type stabilizer types type:

         hard acid zinc (ZnSt), 无毒且 transparent, easy 引起“ zinc 烧”, and Ba, Ca皂并 use.

         hard acid 镉(CdSt), is important transparent stabilizer product types, property relatively large, resistant 硫化污染, and Ba皂并 use.

         hard acid 铅(PbSt), heat stabilized property good, can lubricant. disadvantages is easy 析出, transparent 差, has 毒且硫化污染严 heavy, and Ba, Cd皂并 use.

         hard acid 钙(CaSt), processing property good, 无硫化污染, transparent, and Zn皂并 use.

         hard acid 钡(BaSt), 无毒, resistant 硫化污染, transparent, and Pb, Ca皂并 use.

         hard acid 铅/镉/钡 heat stabilized agent

        ▷▷ hard acid heat stabilized can relatively good, use amount relatively more 时, reduce PVC products transparent property.

        ▷▷ hard acid not only heat stabilized can good (初期 color property small), but also PVC products transparent degree high. hard acid 镉置换PVC separation upper unstable chlorine rear formed RCOOCdCl继续 and PVC upper unstable chlorine 原子发生 reaction, formed CdCl2 make PVC upper C—Cl健 active 化, for 脱HCl has catalytic function.

        ▷▷ hard acid not only can and HCl reaction, but also can and CdCl2 reaction heavy new formed hard acid 镉.

         therefore will hard acid 铅, 隔, use can improve/increase PVC heat stabilized property and PVC products transparent property. currently, soft PVC calendering transparent film more using/adopting hard acid 铅, 镉, and amount ring oxidation combined material, acid ester formed heat stabilized system.

         hard acid 钙/ zinc composite/compounding heat stabilized agent

         hard acid 钙, zinc heat stabilized agent, price relatively low, food packaging use PVC products. research table/sheet 明, zinc stabilizer 离子化势 can high, and PVC separation upper 烯丙基 chlorine reaction, can make PVC stability, made color 效果良 good.

         usually, hard acid 钙, hard acid zinc, ring oxygen large acid ester is formed composite/compounding heat stabilized agent. value heavy is, β-二 ketone type new type heat stabilized agent and 钙, zinc stabilizer use, promote 无毒钙, zinc composite/compounding stabilizer expand large use. in 一 诸如PVC bottle, sheet/slice and other food packaging materials in use.

         has machine type

         has machine type is heat stabilized agent in most has application amount most 广泛 一 type, its advantages is: heat stabilized property ultra- 群, transparent property good, large 都无毒. disadvantages is price high (但 add amount less, generally is 0.5~2份), large disadvantages is large lubricated property.

         has machine type large separation is liquid 体, has less is solid 体. can mono use, and metal use.

         has machine type stabilizer types type:

        含硫 has machine main/primary is alcohol has machine and has machine 锡硫化 material, this category of stabilizer and Pb, Cd皂并 use generate 硫污染;含硫 has machine type transparent property good. main/primary product types has:

        (1)二巯基乙 acid ester positive 辛基锡(DOTTG), appearance is color liquid 体, heat stabilized property and transparent property good, 无毒, add amount low 于2份.

        (2)二甲基二巯基乙 acid ester 锡(DMTTG), appearance is 淡黄澄清 liquid 体, is 无毒, high 效, transparent stabilizer, used for film and transparent film in.

        (3) remove above types outer, also has 十二硫 alcohol positive 丁基锡, 二硫代乙 acid ester 二丁基锡, β-巯基丙 acid positive 辛基锡 and other.

         has machine acid salt, this type of stabilizer stability property 不如含硫 has machine 锡, 但无硫污染, main/primary 包括脂肪 acid salt and acid salt. main/primary product types has:

        (1)二 month acid positive 丁基锡(DBTL), color liquid or semi solid 体, lubricated property excellent 良, transparent property good, has 毒, and Ba, Cd皂并 use, use amount 1~2份; and acid and alcohol use, use amount 0.3~1份.

        (2)二 month acid positive 辛基锡(DOTL), has price high, lubricated property excellent 良, used for hard PVC in, use amount small 于1.5份.

        (3)马 acid positive 丁基锡(DBTM), white powder 末, has 毒, lubricated property, and month acid use, can and metal type used for transparent products in.

         has machine type

         this is types new type PVC heat stabilized agent, it tool has excellent 秀 初期 color versus and color versus maintain property, especially is in low use amount 时, heat stabilized property excellent has machine type, especially di screw extrusion machine in PVC formulation use.

         has machine type stabilizer types type:

        硫 alcohol salt type

        巯基乙 acid ester alcohol type

        巯基羧 acid ester type and acid ester type and other

        国 inner stabilizer main/primary 以三巯基乙 acid ester 锑(ST) and 以ST is main/primary formed separation composite/compounding stabilizer STH-Ⅰ and STH-Ⅱ两 types is 主. alcohol is transparent liquid 体, can used as transparent sheet/slice, film, transparent material heat stabilized agent. STH-Ⅰ can 代替京锡C-102, can made PVC color, heat stabilized property good, products transparent, color 鲜艳. STH-Ⅱ无毒, main/primary used for PVC water tube/pipe and other products.

         dilute stabilizer

        该 stabilizer is 由我国 development stabilizer, is types new type heat stabilized agent. dilute 土元素包括原字序列号 from 57~71 15 镧系元素以 and and its versus 近 钇, and other 共17 元素.

         dilute stabilizer types type:

         dilute oxidation material, hydrogen oxidation material

         dilute has machine low acid salt (如 hard acid dilute 土, acid dilute 土, water acid dilute 土, acid dilute 土, acid dilute and acid dilute and other)

         its in dilute hydrogen oxidation material heat stabilized most good, dilute has machine acid in water acid dilute need good hard acid dilute 土.

         dilute stabilizer heat stabilized property and 京锡-8831 versus 当, good salt and metal type, is salt 3倍 and Ba/Zn composite/compounding stabilizer 4倍; it 无毒, transparent, 价廉; can separation has machine type stabilizer 而广泛 application. dilute stabilizer lubricated function, and lubricant add 入. dilute stabilizer add amount is 3份 left right.

        SR series dilute composite/compounding heat stabilized agent (inner outer lubricant, heat stabilized agent and other) separation is A, B两 type, suitable for hard PVC pipe/tube, type 材. formulation lower table/sheet:

dilute stabilizer commonly used separation grade:

         liquid composite/compounding heat stabilized agent

         liquid composite/compounding heat stabilized agent has machine metal type, acid ester, retardant antioxidant and solvent agent formed. has machine metal is liquid composite/compounding stabilizer main/primary formed separation.

         liquid composite/compounding heat stabilized agent formed formed separation:

         metal has 镉/钡/ zinc, 钡/ zinc, 钙/ zinc and other;

         has machine acid has acid, acid, ring acid, combined formed acid, acid, water acid and other.

         mixed add acid ester has acid ester, acid 一苯二异辛 ester, di 酚A二亚磷 acid ester (PL-40) and poly material (PL-440) and other.

         commonly used antioxidant is di 酚A or retardant antioxidant.

         solvent agent is increase agent, high grade alcohol, high grade and other.

         main/primary product has liquid 体钡/镉/ zinc, 钡/镉, 钙/ zinc, 钡/ zinc and other composite/compounding stabilizer, already separation used for soft PVC calendering film, hard PVC transparent sheet/slice 材, PVC transparent bottle and other.

         pure has machine heat stabilized agent

         non metal has machine heat stabilized agent, 例如β-氨基巴豆 acid ester, 2-苯基吲哚, 三苯基脲 and other, as is 无毒主体 stabilizer use, its high temperature resistance property, long heat resistant property, lightfast property relatively 差, currently already very less use.

         in recent years, according to ring good and 无毒无害化 requirements, force 于不含 metal pure has machine heat stabilized agent research, already relatively good formed 果.

        例如, Ciba精化 company development tool has amine 基嘧啶二 ketone ring is core has machine ring heat stabilized agent, used for hard PVC pipe/tube extrusion molding. can to salt stabilizer heat stabilized can. also 如, Morton company development active property has machine material is pure has machine heat stabilized agent can in soft PVC products processing in substitute/replace and Ba/Zn, Ca/Zn heat stabilized system.