Shanghai Daoqin Plastics Co., Ltd.

         foaming agent is can in plastics in formed structure, manufacturing foam plastics add type additives. it can in conditions lower generate a large amount of gas 体, in formed this has or 不连续 gas 孔(即开孔 or 闭孔), make plastics formed gas solid versus combined more structure material, can reduce plastics density and hardness, or reinforcement its property and thermal insulation property.

         foaming agent types type

        按 generate gas methods different, foaming agent can separation is material foaming agent and chemical foaming agent large type.

         material foaming agent

         material foaming agent main/primary is through foaming agent material 理状态 变化 形 formed plastics in 泡孔.

        理想 material foaming agent tool conditions is:

        ① inert property, 无毒;

        ② and resin versus 容;

        ③ in resin in expand dispersion speed degree small;

        ④当 resin reaction hot amount, or to external add hot easy 于挥发.

         usually, material foaming agent separation is type: ① pressure shrink gas 体;② can solvent property solid 体;③ in low 于0℃ 挥发 property liquid 体.

         in processing process in, pressure remove 时, pressure shrink gas 体膨胀, or liquid hot 蒸发膨胀, or solvent understanding can solvent property solid material rise generate gas 体.

         commonly used property foaming agent product types has: 含5～7 carbon 脂肪烃;卤代烃; low alcohol, ether, ketone and 芳烃. usually application material foaming agent engineering plastics main/primary has ABS and aldehyde resin and other.

        (1)二 oxidation carbon foaming agent

        一 types is acid ester and water reaction formed oxidation carbon (water foaming) as is foaming agent, types is liquid oxidation carbon.

         currently main/primary used for for hot property requirements high hot pipeline temperature, packaging foam plastics and use foam plastics and other field/area; liquid oxidation carbon foaming excellent disadvantages and water foaming same, currently main/primary used for polyurethane ester soft 泡.

        (2) hydrogen fluorine chlorine 烃(HCFC) foaming agent

         separation in has hydrogen, chemical features unstable, comparison easy separation understanding.

         currently upper can substitute/replace CFC-11 most formed product is HCFC-14LB, it and more alcohol and acid ester versus solvent property good, in increase equipment conditions lower can use HCFC-14LB代替CFC-11, in to density and versus material features foam use amount need less 于CFC-11. HCFC-141B defect in raw materials price relatively high, for certain ABS and high impact resistance property polystyrene (PS) tool has solvent understanding property, its thermal conductivity ratio CFC-11 high, therefore need to foam density relatively high, can to thermal insulation 效果.

        (3)烃 type foaming agent

         used for polyurethane ester foaming agent type combined material main/primary is ring 戊烷, especially is ring hard system tool has thermal conductivity relatively low and anti-aging property can, ODP value is and other advantages, by used for 冰箱, cold and construction thermal insulation temperature and other field/area, already formed is hard 泡CFC-11 substitute/replace product 首选.

        (4) hydrogen fluorine 烷烃(HFC) foaming agent

        HFC type combined material ODP value is 零, in soft 质PU foam production in is CFC-11理想 substitute/replace product, HFC type foaming agent main/primary is HFC-134A and HFC-152A, this types foaming agent tool has low molecular weight and low 沸点, to same density and versus material features foam 体时, use amount ratio CFC-11 use amount less, and property can comparison stability, is it defect in thermal conductivity comparison high, in generally more alcohol in solvent understanding degree relatively low, processing has HFC-134A and HFC-152A combined polyether versus comparison relatively difficult, another need foaming equipment meet/satisfy processing requirements.

         chemical foaming agent

         chemical foaming agent also separation understanding property foaming agent. it can uniform dispersion resin in, hot separation understanding, can generate less types gas 体. can separation is machine foaming agent and has machine foaming agent type. has machine foaming agent is plastics in use main/primary foaming agent, main/primary is nitrogen type, 亚硝基 type and 磺酰肼 type. another also has foaming agent formed material, its foaming gas is through 两 组 separation 间 吸 hot reaction 而释放出.

        1, nitrogen type

        桔黄 color crystallization powder 末, versus for separation quality 116.1, versus for density 1.65, fine degree (200 目 through)≥99.5%, water separation ≤0.1%, ash content ≤0.1%. solvent alkali, solvent alcohol, 汽油, 苯, and other generally has machine solvent agent, difficult solvent water. separation understanding temperature degree 190～205℃, easy 燃. gas amount is 200～300ml/g, main/primary is nitrogen gas, oxidation carbon and a small amount of oxidation carbon. room temperature stability, has self-extinguishing property, in 120℃ above separation understanding generate a large amount of gas 体, in container in easy 发生爆炸.

         applications: suitable for PE, PVC, PS, PP, ABS and other. its separation understanding material 无毒, 无臭, 不污染, can made pure foam 体. product separation understanding temperature degree high, generate bubbles uniform, 致密. suitable for foam 体, pressure or add pressure foaming 体, thick or thin foaming and other various foaming products. 如PVC and increase foaming 体, polyolefin calendering and foaming 体, foaming 人造革 and other.

        2, 2, 2''-偶 nitrogen 二异丁腈

         white crystallization powder 末, versus for density 1.1, volatile content 1%, alcohol solvent material 0.1%, melting point >99℃. solvent alcohol, alcohol, alcohol, ether, ether and other has machine solvent agent, solvent water. separation understanding temperature degree 98～110℃, nitrogen gas, gas amount 130～155ml/g. room temperature lower slow separation understanding, 30℃ lower 贮存数 month rear significantly 变质, product in 10℃ below/following 存放.

         applications: especially suitable for PVC, also can used for ring oxygen resin, PS, aldehyde resin and and other. separation understanding hot amount low, 约125.6～167.5J/mol, use amount high 达40%也不致 make products 烧焦, can made products. product separation understanding temperature degree low, can used for PVC 糊. property relatively large, this large large made its application. in recent years, its as is foaming agent application already day shrink small, main/primary used as polymerization agent.

        3, nitrogen acid 二异丙 ester

        橙 color liquid 体, versus for separation quality 202, solid 点2.4℃, 沸点75.5℃(33.31Pa), mono add hot 时, 240℃ lower still stability. use salt, has machine combined material, and zinc and other heat stabilized agent can make its active 化, reduce separation understanding temperature degree. in 100～200℃ inner gas amount is 200～350ml/g. solvent Common increase agent.

         applications: liquid foaming agent, suitable for PE, PP, PVC and other. in plastics in easy dispersion, structure uniform 致密, separation understanding material 无臭, 无毒, color, 不污染, can manufacturing color shallow foam plastics. adjustment formulation and processing conditions, can made or foam 体.

        4, nitrogen acid 钡

        亮黄 color powder 末, versus for separation quality 253.37, versus for density 1.67, separation understanding temperature degree 240～250℃. gas amount 170～175ml/g, separation understanding generate nitrogen gas, oxidation carbon, oxidation carbon, carbon acid and other. in solvent agent in solvent.

         applications: high temperature foaming agent. separation understanding temperature degree high, processing safety property good. suitable for soft high polymer, especially is PP. as is nylon resin injection molding and molding use foaming agent has good 效果. also can used for hard and semi hard 质PVC, ABS and other.

        5, nitrogen acid ester

        红 color odor liquid 体. versus for separation quality 174.16. separation understanding temperature degree 110～120℃. gas amount 190ml/g. solvent increase agent. stability. for promote agent reaction. for water separation and pH 变化敏感. metal salt (Cu, Fe, Co, Pb, Al, Sn and other metal) can promote separation understanding.

         applications: PVC and its copolymer, PE, polyester, ring oxygen resin, PS, foaming agent. use amount is 0.5～10%.

        6, nitrogen amine 基苯

        黄棕 color crystallization, has odor. versus for separation quality 197.24. melting point 96～98℃, separation understanding temperature degree 150℃. gas amount 113ml/g. stability. easy from products surface crystallization, in acid property in in relatively low temperature degree lower separation understanding, belongs to property foaming agent.

         applications: can as is PVC and its copolymer, PS, PE, aldehyde resin, ring oxygen resin, and 橡胶, silicon ketone polymer foaming agent. use amount 0.1～5%.

        7, 亚硝基化 combined material type

        淡黄 color crystallization powder 末, 本身无臭, in wet lower has aldehyde 味. versus for separation quality 186.18. versus for density: 1.45. solvent understanding degree (room temperature, g/100g solvent agent): ketone 1.6, 吡啶1.8, 乙酰乙 acid ester 2.6, 乙腈5.6, 吗啉2.0, 1-硝基丙烷1.4, 二甲基甲酰 amine 14.7. in water, alcohol, 苯, ether, ketone in solvent understanding degree is 1. separation understanding temperature degree 190～205℃(空 gas in), 130～190℃(resin in or use separation understanding additives). gas amount 260～270ml/g. separation understanding gas main/primary is nitrogen gas, has a small amount of oxidation carbon and oxidation carbon and other. product easy 燃, and acid or acid 雾接触会迅 speed 起火燃烧, can and this material 质共同存放, 并应严禁明火.

         applications: as is foaming agent more used for PVC. gas amount large, foaming efficiency high. use water acid, adipic acid, 邻苯二甲 acid and other has machine acid or is foaming additives, can reduce separation understanding temperature degree (usually adjustment in 90～130℃). separation understanding hot amount large, easy formed thick products “芯烧”, separation understanding material has 恶臭. use rear can remove 臭味. product in PVC in use amount is 7～15%.

        8, N,N''-二甲基-N,N''-二亚硝基 for 苯二甲酰 amine

        商 product product in has formed separation is 70%. color powder 末, versus for separation quality 250.21, versus for density 1.2. gas in separation understanding temperature degree is 105℃, resin in is 90～105℃, gas amount is 126ml/g, separation understanding gas main/primary is nitrogen gas. pure product is material, for impact and scratch 敏感, product in inert property filler increase safety property.

         applications: can used as PVC foaming agent, especially suitable for PVC 糊, use foaming additives can made and foam 体. separation understanding hot small, can used for thick products, separation understanding material 无污染, in plastics in 会喷霜.

        9, 磺酰肼 type ——苯磺酰肼

        淡黄 color or white fine micro powder 末, versus for separation quality 172.20. versus for density 1.43～1.48, melting point 99℃. gas in separation understanding temperature degree >95℃, plastics in separation understanding temperature degree is 95～100℃. gas amount is 130ml/g, separation understanding gas in main/primary is nitrogen gas, has a small amount of water gas.

         applications: can used for PVC, aldehyde resin, polyester foaming agent. separation understanding process has hot, make products internal temperature degree rise high, most good and carbon acid hydrogen mixed combined use. product separation understanding rear generate 含硫化 combined material tool has 臭味.

        10, for 甲苯磺酰肼

         white crystallization fine micro powder 末. versus for separation quality 186. versus for density 1.40～1.42. melting point 100～110℃. easy solvent alkali, solvent alcohol, alcohol, ketone, micro solvent water, aldehyde type, solvent and 甲苯. separation understanding temperature degree 100～110℃, nitrogen gas and a small amount of water, gas amount is 110～125ml/g. in hot water in hydrolysis generate acid, 并放出 nitrogen gas. normal temperature lower wet understanding phenomenon, chemical property stability. product is can property material 质, acid 不 火.

         applications: product is low temperature foaming agent, suitable for PVC and other multiple plastics and 橡胶. gas and separation understanding 残渣无毒, 无臭, 不污染. product generate structure fine uniform, products shrinkage rate small, strong/high degree large, especially combined manufacturing foam plastics and sponge 胶. product used for PVC can made white foam 体, in combined mold surface must 镀铬. due to product separation understanding temperature degree relatively low, processing 时应避免 temperature degree high (generally low 于80℃), anti front foaming. use product can use foaming additives. product can and foaming agent H use, this types foaming agent reaction generate a large amount of hot amount, can products internal 烧焦. product 也不宜 and salt use, generate black 硫化铅沉淀.

        11, 4, 4’- oxidation di 苯磺酰肼

         white or color crystallization powder 末. versus for separation quality 358.39. versus for density 1.52. separation understanding temperature degree 140～160℃, nitrogen gas and water gas, gas amount is 120ml/g. solvent ring ketone, ethylene glycol, ether, micro solvent alcohol and temperature water, solvent and 汽油.

         applications: product is property foaming agent, has can foaming agent 之称. can used for PVC, PE, PP, ABS resin and other, can as is plastics and blending material and various combined formed foaming agent. its structure in although has ether 键, non stability. in resin in separation understanding temperature degree is 120～140℃. use carbon acid hydrogen can make its active 化, reduce separation understanding temperature degree. structure fine micro uniform, separation understanding gas and material 无毒, 无臭, 不污染 products. suitable for manufacturing PE foaming electrical cable insulation material, micro 孔PVC foam and other various foam plastics. product processing safety property high, in 100℃以 inner front foaming 之虞. product in separation understanding foaming 时放出 water, for/regarding water combined suitable.

        12, 3, 3’-二磺酰肼二苯砜

        灰 white powder 末. versus for separation quality 406.45. versus for density 1.60. in gas in separation understanding temperature degree is 148℃, in ethylene plastics in separation understanding temperature degree is 135～145℃. gas amount 110ml/g. 无毒.

         applications: product main/primary as is soft 质PVC foaming agent, can used for hard 质PVC and PE. foaming separation understanding formed gas 体无恶臭, 无毒, 但残余 material has property, can make products belt/tape color.

        13, 1, 3-苯二磺酰肼

        商 product is 50%本 product and 50% chlorine wax mixed combined material, is has white fine micro pellets material, versus for separation quality 266.29, versus for density 1.5. in gas in separation understanding temperature degree is 150℃, in plastics in separation understanding temperature degree is 115～130℃, gas amount 300ml/g.

         applications: product can as is and plastics use foaming agent, main/primary used for 橡胶. processing safety property high, front foaming property small. alkali property material can reduce its separation understanding temperature degree. separation understanding generate gas main/primary is nitrogen gas.

        14, for 甲苯磺酰氨基脲

         white fine micro powder 末. versus for separation quality 229.25. solvent 于二甲基亚砜, 二甲基甲酰 amine, 二甲基乙酰 amine, concentrated hydrogen oxidation and alkali water, solvent acid, ketone, chlorine carbon, ethylene glycol, alcohol, ether, and water. in gas in separation understanding temperature degree is 230℃, in plastics in separation understanding temperature degree is 213～225℃. gas main/primary is nitrogen gas and oxidation carbon (约2:1). separation understanding rear solid 体残余 material main/primary is for 二甲苯二硫化 material and for 甲苯磺 acid 铵, front can solvent 于苯, rear can solvent water. product in room temperature lower has good stability property, 但应避免靠近蒸汽 pipeline, and cationic light 直晒.

         applications: product is high temperature nitrogen gas foaming agent, especially suitable for high temperature processing plastics, 如ABS resin, nylon, hard 质PVC, HDPE, PP, PC and other. processing safety property good, front foaming 危险. product can used for 天然橡胶 and combined formed foaming.

        15, 4, 4’- oxygen di (苯磺酰氨基脲)

        本 product is high temperature foaming agent, separation understanding temperature degree is 210～220℃, gas amount is 145ml/g. gas main/primary is nitrogen gas and oxidation carbon.

         applications: suitable for hard 质PVC, HDPE, high soft 化点PP, PC, ABS resin and other processing temperature degree high plastics.

        16, 三肼基三嗪

         white or white powder 末. versus for separation quality 171.61. separation understanding temperature degree 235～275℃. gas amount is 247ml/g. gas main/primary is nitrogen gas and oxidation carbon.

         applications: product is high temperature foaming agent, suitable for hard and semi hard 质PVC, PP, PC, ABS resin, polyamide (PA) and other processing temperature degree high plastics. processing safety property good.

        17, 5-苯基四唑

         liquid material. versus for density 1.105(50℃).

         applications: product is high temperature foaming agent, suitable for PC, polyamide (PA) and other melt temperature degree high polymer.

        18, poly silicon oxygen 烷- poly oxygen ether copolymer (foaming 灵)

        黄 color or color viscous transparent liquid 体. acid value <0.2mgKOH/g. versus for density 1.04～1.08. viscosity 0.15～0.5Pa· s(50℃).

         applications: product is polyether type polyurethane ester foam plastics method production in use foam stabilizer. can as is polyurethane ester type, acrylic ester type coating material leveling agent. in color color sheet/slice anti light coating 布方面也 has application.

         has machine foaming agent in issues

        1, has machine foaming agent gas amount generally is machine foaming foaming agent 15%-30%, amount large, its in water and property material 质, has has and surface 喷霜;

        2, foaming separation understanding hot amount large, difficult remove, especially in products thick degree large lower, make internal plastics hot separation understanding, reduce property can;

        3, foaming agent 几乎都 is easy product, separation understanding temperature degree low, and use must small 心.

         for chemical foaming agent requirements

        1, separation understanding generate gas temperature degree scope/range 应当狭 narrow

        2, gas speed degree fast, gas rate can control

        3, 释放出 gas 体应无毒, 无腐蚀, 不燃烧, nitrogen gas most good oxidation carbon can, also can oxidation nitrogen, oxidation nitrogen gas has property, most good use

        4, chemical foaming agent easy dispersion uniform, can plastics mixed is most 佳.

        5, 价廉, stability, 无毒.

        6, separation understanding rear 残渣应无毒, color, 无嗅, 也不会 effect/influence plastics material 理, chemical property can and force property can, chemical inert property, effect/influence plastics melt speed rate and solid 化.

        7, separation understanding 时不应 a large amount of hot, effect/influence plastics melt and solid 化.

        8, separation understanding rear 残渣同 resin versus property good, 不发生残渣喷霜 or phenomenon.

        9, foaming agent separation understanding temperature degree resin melt temperature degree 应一致.