Shanghai Daoqin Plastics Co., Ltd.

        一, formulation 方面

        1, need formed is chlorine polyvinyl chloride (PVC) plastics (PVC-C) hot water tube/pipe and power/electricity, cable tube/pipe is what need add chlorine polyvinyl chloride (PVC) (CPVC) different 份数?

         this is is chlorine poly chlorine dilute (CPVC) indicators has standards, its in for processing chlorine amount 67.0±0.1% is important, Japan CPVC moisture content (即挥发 material)≤0.1%, 我们国 inner can moisture content is 主0.2%, can maintain year 不变, can month 不变. therefore, use pure CPVC as sheet/plate, testing its heat resistant indicators, Japan CPVC can to 131℃, inner can to 126℃.

         in formulation in add remove increase agent outer additives and its it high poly material, make temperature degree decline, again add upper equipment, mold, process temperature degree and pressure and in screw time and cooling 牵引, expand and other methods has effect/influence, in 2001 year 2 month to month in Japan Kaneka chemical industry 株式会社 research experiment/testing, product testing is 维卡≤116℃, 因而, for/regarding and inner standards PVC—C hot water tube/pipe is ≥11O℃ indicators, is has 余.

        也就 is use 100份 CPVC and various additives combined, in process conditions and equipment, mold and other 支撑, true as 才会 关;至于 pipe fittings ≥103℃, can 适当添 add 10份PVC or increase 0.1—0.2 lubricated and stabilizer can.

         this again strong/high lower, power/electricity cable tube/pipe is 55份CPVC and 45份PVC main/primary raw materials ratio is good. chemical industry 部北京 chemical industry research in experiment/testing 室搞 50份CPVC for 50份PVC experiment/testing, 结果不但没 has improve/increase, decline, this mechanism research 人员一直 in research, 我们就 toward recommendation 55份CPVC for 45份PVC is full can comparison can 靠 达 to 维卡≥93℃ Japan and inner industry standards, its it additives need attention/notes. another, for/regarding thick in 3mm thin tube/pipe 维卡应 in 90℃±14℃ scope/range inner.

        2, is what need add 入MBS rear also need add CPE?

         strong/high degree improve/increase, 但鉴于 its di more, for outer 线 照射会 generate fracture phenomenon, strong/high degree decline, this in pipe/tube to 工, and 时埋设 lower, strong/high degree decline semi 需5—7天, therefore, formulation in add 入6—8份MBS(it make temperature degree decline more, this is MBS also features), also add 入3份CPE can improve/increase resistant and weather resistance. rear design in 西北寒 cold and 西南潮 wet outer strong/high 烈照射 formulation, meet/satisfy power/electricity system high pressure and ultra-high pressure cable pipe/tube.

        3, is what add in CPE时 need add liquid wax (白油)?

         according to 31届 world plastics engineering year USA 方面 报道, in 亚利桑 that and new 泽西州 寒 cold and and high temperature in experiment/testing, CPE in has 白油存 in lower, it resistant impact property can formed 几倍, 十几倍 and 几十倍 改进 and improve/increase, rear in 无锡同样做 experiment/testing, Shanghai plastics made as formed strip/profile to chemical industry 部广州1 aging research as large gas aging test, 结果二 year strip/profile comparison 平直, and USA engineering 师 做 一样. this 里 几倍, 十几倍, 几十倍 improve/increase is in formulation 不变 情况 lower processing equipment, mold, process conditions effect/influence has 差异.

         production use plastics upper CPE 3份, add 入0.3份 白油, lower, if most good, has 吸完 白油留 lower formulation in again use. this is 检验CPE this thermoplastic property elastomer good bad methods, is good.

        4, CPE in PVC材 material in impact resistant 效果:

        白油 increase CPE impact resistant property can principle: due to CPE pellets in has amount large property CPE separation 子, this separation versus in 一起, in processing process in difficult uniform dispersion to PVC in, therefore dispersion property 差, effect/influence material impact resistant can force. add 入10% 白油 can make CPE property separation 子舒展, 便于移动 dispersion to PVC separation in, from increase PVC材 material impact resistant can force.

        5, is what in production chlorine polyvinyl chloride (PVC) and polyvinyl chloride (PVC) products 时不提倡 use hard acid 钙?

         this is is hard acid in high 于160℃ temperature degree and long time add hot in, easy make white poly chlorine dilute plastics is micro color, it can and separation understanding HCL起 reaction, formed very chlorine 化钙 化 combined material, for products application property can, is 不利, 因而, currently in poly 卤代烯烃 plastics products processing 时, generally add hard acid 钙, in injection molding 时, pressure lubricated stability property can requirements lower add less 一点, 当然, in has oxidation titanium (titanium powder) lower, add 入0.06—0.12份 carbon acid or 0.09—0.19份 carbon acid hydrogen can upper to disadvantages.

        二, processing process

        1, and key points

        A, add hot 顺序

        CPVC or and PVC先进捏 and 锅, rear is stabilizer, its is add its it various additives, most rear is make system improve/increase impact strong/high degree MBS and CPE add material. this need introduction is poly 卤代烯烃 is need stabilizer 进入, anti hot chlorine hydrogen (HCL) rear accelerated separation understanding, its 余东西 rear add 入, is let stabilizer and poly 卤代烯烃 increase machine 会, most rear add 入MBS and CPE add 白油, is make 整 配 material system material features 显示出, this is use requirements.

        B, and temperature degree

        捏 and temperature degree 宜≤105℃. currently has production mono to ≥110℃, this is good, and to and function, has requirements, high and temperature degree and long time to material belt/tape hot force, for pipe/tube in the future property can and 安装施工 use belt/tape issues.

        C, di screw extrusion machine production 时 扭矩

        鉴于含 has CPVC raw materials, its processing flow property relatively 差, therefore, remove in formulation in this 一情况 outer, also 扭矩定 in 35～60才 can production, generally 40—55 comparison good, this need adjustment temperature degree, pressure, most rear again improvement formulation, make can production, formed product property can can to 原 想象 requirements standards, formed 功.

        D, expand requirements

        PVC—C hot water tube/pipe need expand 口, is use pipe fittings 连接, power/electricity cable sleeve/set tube/pipe need expand 口, this in tube/pipe 璧关口形状, increase thick 方面均 for equipment has requirements, focus/key point in adjustment pipe/tube hot time, temperature degree can make pipe/tube expand 口区不 deformation. generally expand temperature degree ratio extrusion temperature degree need high more, extrusion temperature degree requirements ultra- 195℃ is 宜, expand temperature degree in 250℃ left right, Domestic table/sheet 反映300 more degree has, this need attention/notes.

        三, power/electricity cable sleeve/set tube/pipe in ring sheet/slice hot pressure shrink force standards indicators is need 修改

         for/regarding power/electricity cable expand sleeve/set tube/pipe ring sheet/slice hot pressure shrink force this indicators, is in 取50 mm wide pipe/tube, in 80℃ ring in 放置一定 time, rear need speed degree pressure drop to 一定形变时 force, industry standards in 8.5 mm and 9.5 mm thick pipe/tube is to standards, tube/pipe and thick small pipe/tube its ring sheet/slice hot pressure shrink force non 随函数 decline, therefore, industry standards in use method small 于8.5 mm pipe/tube, ring sheet/slice hot pressure shrink force is 主0.3KN is good, already notice power/electricity tube/pipe testing 部门, in the future industry standards is must 考虑.

         another, for/regarding power/electricity cable sleeve/set tube/pipe density is power/electricity cable sleeve/set tube/pipe important indicators, can is very more production 厂都不 heavy 视, large has combined 格, this 厂家应当改进, make power/electricity 输送运行 safety. this 厂家未知 is already 经落实 measures ensure density in scope/range inner, 否则, this “入网证” 发出, is 会出现严 heavy issues, most rear also can can 追究刑事 responsibility.

        四, use power/electricity cable sleeve/set tube/pipe attention/notes issues and hot water tube/pipe issues

        埋 power/electricity cable sleeve/set tube/pipe thick according to use combined different selection. as 汽20 experiment/testing, 悬臂梁承 pressure experiment/testing, production enterprise specifications can selection in 路承载, also is in has machine non belt/tape, 人行绿化 belt/tape, another, also has deep shallow, lower has water water, 冻土层 避 let formed is need 考虑. power/electricity design research is Shanghai has production enterprise has design specification, according to specification can selection use.

         hot water tube/pipe is can use, in outer 旅店里都 cold hot water separation strip/profile tube/pipe 线, hot water tube/pipe leading upper has Tap water is not drinkable说明“ water tube/pipe inner hot water can use ”, is, inner requirements 如 份严格, can use Shanghai ring chemical industry material has company 经营 熊牌 钙 zinc stabilizer formulation, can combined standards, has machine issues already 经根本不 can use in upper water tube/pipe 方面.

        五, material recommendation

         for/regarding PVC—C power/electricity tube/pipe use filling material can use heavy carbon acid 钙, need use light active carbon acid 钙, PVC—C hot water tube/pipe is use pure CPVC, titanium powder use amount relatively more, carbon acid 钙就不宜 add or property add 0.5—1份即 can. this 里提一 lower PVC—C power/electricity tube/pipe color, generally using/adopting machine material, has has machine material in high temperature 时, generate separation understanding, make color deep, in Japan Kaneka research experiment/testing, 也证实 this 一点.

         most rear, need production combined standards, especially is use can very safety use pipe/tube, also has very more need attention/notes issues