Shanghai Daoqin Plastics Co., Ltd.

摘 need from color property can, products physical properties, heavy metal content and property can and other discussion use stabilizer production to water pipe/tube formulation process requirements, discussion use stabilizer production to water pipe fittings formulation process requirements. through series formulation and process experiment/testing for stabilizer 进行 甄选. key/critical 词: stabilizer, extrusion, to water tube/pipe 一, front has material amount standards （mg/kg）铅（Pb）1000镉（Cd）100汞（Hg）1000六价铬（Cr6+）1000 more bromine 联苯（PBB）1000 more bromine ether （PBDE）1000欧盟 for electronics electrical machine equipment in material use 指令(RestrictionofHazardousSubstances,简称 RoHS) will 于2006 year 7 month 1 day 生效, its in remove electrical machine electronics and other product in material 质: 铅, 汞, 镉, 六价铬, more bromine and more bromine ether. meanwhile, waste electronics electrical machine equipment ring 境指令(WasteElectricalandElectronicEquipment,简称WEEE)(2002/96/EC)也 already 于2003 year 2 month 颁布, 并于2005 year 8 month 13 day positive strong/high made 实施, 该指令针 for various electrical appliances product product 收集, ring use and recycling requirements and specification. RoHS 指令: 　2002/95/EC core inner 容卫生部《生 active use water water equipment and anti material safety evaluation specification 》（2001）, for and active use water 接触 输配 water tube/pipe water heavy metal content as 严格限定, requirements As≤0.005mg/L, Cd≤0.0005mg/L, Cr≤0.005mg/L, Al≤0.02mg/L, Pb≤0.001mg/L, Hg≤0.0002mg/L, Fe≤0.06mg/L, Mn≤0.02mg/L, Cu≤0.2mg/L, Zn≤0.2mg/L, Ba≤0.05mg/L, Ni≤0.002mg/L, Sb≤0.0005mg/L, Ag≤0.005mg/L, Sn≤0.002mg/L. standards ratio GB/T10002.1-1996里 heavy metal content control （Pb≤0.3mg/L, Sn≤0.02mg/L, Cd≤0.01mg/L, Hg≤0.001mg/L） more 严格. 卫生部 standards ratio 技监局 standards requirements content decrease/reduce 300倍, decrease/reduce 10倍, decrease/reduce 20倍, decrease/reduce 5倍. therefore, in PVC processing process in usually use Pb, Cd, Ba, Sn, Sb and other heavy metal stabilizer, has machine and alcohol stabilizer, to 严格限 made. its 实, has machine is 一定限 degree 无毒, remove as is heavy metal its content to control outer, has machine in alcohol 一定程 degree has 毒, odor difficult 闻, but also 会腐蚀 copper and other metal 元素. in upper 流行 甲基锡 stabilizer, generally is 一甲基锡, 二甲基锡 and 三甲基锡 mixed combined material, its in 一甲基锡 low 毒, 二甲基锡 and 三甲基锡 has 毒. another due to alcohol and alcohol in cationic light lower 暴晒会 separation understanding generate material make products color, therefore outer product use to made. therefore, in inner outer in focus/key point development and application stabilizer. zinc is its in important product types. zinc 无毒, zinc heat stabilized property can difficult to PVC processing requirements, especially is for/regarding hard 质PVC products, processing process easy 出现初期 color 而变红. in transparent products upper, zinc transparent property can 差, easy pressure 析, or water whitening phenomenon. for inner production current situation, 肇庆市森德利 chemical industry has company formed deep 圳市森德利 plastics additives has company 专门研 made development new type zinc stabilizer ――CZX series, achieve amount production. CZX series is types 特殊 钙, zinc, dilute has machine salt property combined material, for 不含Pb, Cd, Ba, Cr, Sb, As, Hg, Se and other property heavy metal. CZX series appearance is white solid powder 末, can use 普通钙 zinc stabilizer 而出现 初期 color “变红” phenomenon, especially combined to water pipe/tube, and 百叶窗帘, cable, toys, furniture material, automotive trim parts and other need 无毒 场 combined. comparison inner outer types type stabilizer in UPVC to water pipe/tube upper application. in extrusion process process flow property can, stability property can and products physical properties, resistant property can and other 方面进行 一 series experiment/testing. 二, 实验部 separation 2．1 main/primary raw materials PVC resin powder S-1000, S-700（齐鲁石化, 四川德 cationic and other 产）; impact resistant modifier CPE135A, processing modifier ACR-201, titanium powder, filler, PE wax and other is market 购买. zinc or dilute composite/compounding stabilizer, Imported and 湖南, and other; stabilizer CZX－118, deep 圳市森德利 plastics additives has company. 2．2 equipment high speed combined machine （200 rise ）, cooling mixed combined machine （500 rise ）, 江苏张家港 100 million machine has company 产; Φ60锥 type di screw extrusion machine and extrusion 模头, 广东联塑科技 has company 产. 东华300 electrical 脑 injection molding parts molding machine, machine has company. 2．3 实验 methods will PVC resin powder, composite/compounding stabilizer, inner outer lubricant, impact resistant modifier, processing modifier, increase agent, filler and other Raw Materials 按一定 配 ratio combined machine in combined, adjustment temperature degree, screw speed, add material speed degree, speed degree, cooling water true degree and other processing process, in Φ60锥 type di screw extrusion machine upper extrusion pipe/tube. adjustment temperature degree, injection pressure, injection speed degree and other processing process, in injection molding parts molding machine upper injection pipe fittings. 三, extrusion basic formulation and its process 3．1 basic formulation using/adopting solid its it material types type and use amount, solid stabilizer use amount, 仅改变 stabilizer product types basic formulation experiment/testing, 以求达 to data can ratio property. basic formulation table/sheet 1 示. table/sheet 1 extrusion basic formulation Tab1 Basic description for extrusion Raw Materials formulation 1湖南钙 zinc formulation 2广东 certain dilute formulation 3 Imported zinc formulation 4CZX－118PVC S-1000100100100100CPE-135A7777ACR 2010.50.50.50.5 stabilizer 4.04.04.04.0PE-WAX1.01.01.01.0CaCO315151515TiO22.52.52.52.53．2 basic process combined temperature degree hot mixed 110℃ cold mixed 55℃ extrusion temperature degree screw screw screw screw screw 五段165℃ 165℃ 160℃ 155℃ 160℃ method temperature degree 165℃ injection molding parts mold temperature degree injection molding parts mold 一段170℃ injection molding parts mold 二段185℃3．3 basic electrical 流: formulation 1 is 60安, data large; formulation 2-4均 is 40安 left right, data positive 常. pressure: formulation 1 is 27.8MPa, data large; formulation 2 is 17.8MPa, data low, formulation 3-4均 is 21.8MPa left right, data positive 常. melt temperature degree: formulation 1 is 175℃, data large; formulation 2 -4均 is 165℃ left right, data positive 常. product appearance: formulation 1 product obvious color; formulation 3略呈黄 color, formulation 2, 4 product is positive white. 3．4 添 add has machine experiment/testing in upper basic formulation in add 入0.5PHR has machine 锡TM-181, formulation 1 product 略呈黄 color, formulation 3, 4 product positive 常, formulation 2 product obvious black. 四, extrusion process main/primary difficulty/challenge analysis and solution countermeasures 4．1 初期 color property can can 看出, 普通钙 zinc stabilizer （如 formulation 1） stability property can relatively 差, melt extrusion 塑化时“ 早塑化”不 resistant temperature, make extrusion pressure and melt temperature degree rise high; resistant color property can 差, from make product 出现红 color. formulation 3, 4 use stabilizer heavy metal, stability property can good, can relatively good solution color issues. 4．2 products physical properties for/regarding resistant pressure property can and tensile strength 关系, has 人（1）曾提出 Naday公式PB time 之爆破 water pressure (MPa)f tensile strength (MPa)t tube/pipe thick (cm)Dm PVC tube/pipe in 线口径(cm)D PVC tube/pipe outer 径(cm)f PVC tube/pipe outer 径(cm) can 见, in tube/pipe thick 一样 情况 lower, resistant pressure property can and tensile strength has 关. zinc stabilizer basic formed is metal hard acid and hard acid zinc, metal add more easy make product impact strong/high degree and tensile strength reduce, from 而导致 resistant water pressure （ resistant pressure property can ） reduce. tensile strength remove and formulation in material types type and amount has outer, also and pipe/tube degree has 关（见 table/sheet 2）. table/sheet 2 different degree pipe/tube tensile strength and fracture elongation Tab2 Pipe extension intensity and opened-elongate coefficient for different plasticity degree %204060657080 tensile strength MPa394346444334 pipe/tube 塑化程 degree remove and formulation material has outer, also can through extrusion machine and temperature degree adjustment. screw speed and formulation property can versus for 应, effect/influence 塑化. due to 普通钙 zinc stabilizer heat stabilized property can 差, temperature degree rise high screw speed add fast, products easy color, therefore its processing process scope/range to made. 4． 3 metal content and products property can formulation 2 use stabilizer has and has machine in alcohol chemical reaction heavy metal 元素, therefore tube/pipe property can and resistant color property can separation good, due to heavy metal to tube/pipe made, 并不适 combined used for production to water pipe/tube. formulation 3, 4 use stabilizer heavy metal, stability property can good, can relatively good solution color issues. 五, 结 论 use deep 圳市森德利 plastics additives has company production 无毒钙 zinc stabilizer, meanwhile combined combined production process, can improvement products color property can, resistant pressure impact resistant and other physical properties, meanwhile meet/satisfy 卫生部门 for heavy metal content control and other and other property can requirements, production combined to water tube/pipe. Production PVC-U water-in pipe and pipe-fittings with non-poisonous stabilizer （JunXu, ZHaoHan Chen, HongGuang Chen） Abstract Discuss how to fix up the factor including initial color-changing, physics function, hygiene function etc when produce PVC-U water-in pipe and pipe fitting with non-poisonous stabilizer. Red-changing and bad luster while molding are also discussed. Key words: Non-poisonous stablilizer, extrude, mould