Shanghai Daoqin Plastics Co., Ltd.

一, what is 炭黑?

carbon 黑 is carbon （ main/primary is 石油衍生 material ）经 不完 full 燃烧形 formed fine powder 末状 准石墨 structure material 质, table/sheet pure black powder or 者粒状. carbon 黑（无 machine material ）不 solvent water; has acid alkali property separation, rear generate oxidation carbon. carbon main/primary formed separation is carbon, meanwhile micro amount hydrogen, oxygen, 硫（含硫 amount ）, 灰份（ ash content ）, 焦油（甲苯 light transmittance ） and water 份（ add hot decrease amount ）.

carbon 元素→准石墨 structure → poly 集体→附 poly 体→粒状炭黑（原 powder ）生

依靠范德华 force （ separation function force ）, one-time structure poly 集体会附 poly formed poly 体（ also 称二次 structure ）. in coating material, ink or plastics in, in outer force function lower, 炭黑 二次 structure formed one-time structure, distribution in system in.

而粒状炭黑 is is meet/satisfy 储存, 运输, anti 止污染 need, wet method or dry method pelletizing formed more large pellets.

二． what is material carbon 黑?

据2005 year statistics data 显示, carbon full year output/production volume 接近800 10,000 tons, its in 90% above is carbon 黑, used for 橡胶补 strong/high applications and automotive 轮胎; has large 约10% as is color used for ink, plastics and coating material, is material carbon 黑, color carbon or specialty carbon 黑. most stability material: has very good heat resistant property, chemical resistance and lightfast property.

三． carbon applications

炭黑 tool has excellent color, conductive or anti-static and outer absorption function, therefore can as is 橡胶, and other industrial in filling agent, coating material, ink, plastics, 化纤, leather and other industrial color agent, and conductive agent, anti-static agent, outer light agent and other by application.

四, carbon technology process （ production methods ）

full carbon production process generally is method, method （ main/primary is method and gas method ） and hot understanding method. positive in use is most important is most commonly used production process --炉 method and gas method.

1, method (油炉 method and gas method)就 is in reaction in, will liquid raw materials （ generally is 煤焦油）喷射 to hot gas and gas in, in high temperature lower hot oxidation separation understanding, formed carbon property can can through 猝熄火焰 control. rear, use system formed material carbon from gas in separation 离出.

炉 method features is Raw Materials selection scope/range very 广, production carbon property can multiple more 样. product generally is alkali property. rate high, generally is 10,000 tons grade.

2, gas method 即无槽 gas method, is from method 改进而 production process. method is will solid 态烃（ coarse 蒽） or liquid 态烃（蒽油）经 gas gas rear, and can property gas 体（ generally use gas, use 焦炉煤 gas or water gas ） mixed combined rear as is raw materials, ring 形布置 tube/pipe 网送入火房 in lower in high temperature 燃烧并经槽钢 cooling 面收集生 formed carbon process.

无槽 gas method 即火房不设槽钢 cooling 面 改进 process. this type of process production 出 颜 material carbon rate relatively method low, 但原生 pellets small, in degree and color force 方面均 has more good performance. gas method generally is acid property product. output/production volume small.

3, 滚筒炭黑 is from 传统槽 method 改进而 接触 method production process. method is use 往复运动 槽钢 as is cooling 面 收集生 formed carbon 黑, 滚筒炭黑 火焰接触面 is 回转运动 inner cold water 圆筒. mixed combined raw materials gas 燃烧火焰, and 回转滚筒接触, 炭黑沉积 in upper. by 刮刀刮 lower, 经螺旋输送 machine 送出火房, 进入风送 system recycling pelletizing.

and gas method versus ratio, 滚筒炭黑 for 燃烧 火焰 tool has more more control 手段. gas method production use production methods classification.

五, poly 集体 存 in 状态, and its for various application property effect/influence.

炭黑 poly basic in has types:

1, 粒径.

颜 material carbon 黑 原生 pellets is many combined 层面 组 formed. in very large degree upper, production process its pellets large small. in method production carbon in, pellets 粒径 变化 scope/range most large: from 10 nano to 80 nano. pellets average particle size and distribution from upper 决定 颜 material carbon property can.

“粒径” large small is in 不考虑 structure and surface active property lower large small. lower 图:

粒径 small →粒径 large

usually 我们 说 “原生 powder ”, is has pelletizing structure 炭黑. it average particle size generally in 1～20 micron between.

2, structure.

颜 material carbon 黑原生 pellets non mono separation 离状态存 in. it through material function formed poly melt and poly 集体. poly degree can through process adjustment; gas poly degree very difficult 调控. carbon 黑原始 pellets poly degree usually by is “ structure ”. high poly degree carbon by is high structure carbon 黑, low poly degree carbon by is low structure carbon 黑.

“ structure ” high low is 不考虑粒径 and surface active property high low. lower 图:

structure is 炭黑理论里 most difficult understanding concept. upper, 炭黑理论里 structure tool has types different 含义:

一, is micro 镜像学 structure concept. 梅达利 research structure is this type of structure. upper in fiber 状 炭黑 a large amount of in gas method 炭黑里.

二, is macro statistics structure concept. in 实验室里, use DBP吸附 value structure is macro statistics structure concept.

当我们 use DBP吸附 value 测定炭黑 structure 时, attention/notes is: types different 炭黑, has nitrogen value versus meanwhile, DBP吸附 value large

炭黑才 ratio DBP吸附 value small structure high.

3, surface active property.

炭黑 main/primary carbon 元素组 formed, carbon amount is 90%～99% left right has a small amount of oxygen, hydrogen, nitrogen, and and other 元素. this 里 说 surface active property, for/regarding acid property is in pellets surface formed oxygen surface how much. this acid property surface main/primary is 羧基, 酚羟基, 醌基, inner ester and other. for/regarding alkali property is 指炭黑 surface alkali property oxidation material, it effect/influence 炭黑 理化 property can, lubricating wet dispersion property, catalytic active property and electrical chemical property can.

“ surface active property ” strong/high low is 不考虑粒径 structure strong/high low. 如图9:

粒径, structure, surface active property, this types in can nitrogen surface 积, value, 挥发份, PH value and other indicators amount 描述.

meanwhile, this types in also 决定 炭黑添 add to various coating material, ink, plastics system rear performance various property 质. “存 in property 质” this 一自然辨证 method 则永远不会改变.

六, what is dispersion property? dispersion property indicators for other property can indicators has what effect/influence?

dispersion property is 一 常挂嘴边, use 词汇, 我们总 is in 考虑炭黑 in coating material system dispersion property issues. what is dispersion property 呢? upper “ dispersion property ” this concept in different combined lower use it is different:

1, in technology indicators in, “ dispersion property ” is 指: 按国家规定 testing methods, mixed combined to 亚麻仁油 in, use abrasion abrasion to requirements 时, 炭黑浆 fine degree indicators.

2, coating material production 工人反映说 certain types 炭黑“ dispersion property ”不 good, can can is 指按常规 production formulation as 时, abrasion 炭黑浆 viscosity high, method 施工, production easy 堵网, production cycle long, more abrasion still to fine degree requirements, 甚至严 heavy abrasion loss abrasion machine 械. this 时“ dispersion property ” is 指: in abrasion in from pellets dispersion formed poly 体; again dispersion formed poly difficult easy degree.

3, made formed coating material product rear, more long time, coating material 就出现“返 coarse ” phenomenon, 质检人员会说, this is is 炭黑 “ dispersion property ”不 good. this 时, “ dispersion property ”实际 upper is dispersion stability property.

4, coating material formed film rear, is has gloss, mechanical properties good, use 者也会反映说 this type of gloss good, machine property good is is 炭黑“ dispersion property ”不 good formed. this 时, “ dispersion property ”指 is in film in 炭黑颜 material and resin system mixed degree.

upper this about/regarding “ dispersion property ” 说 method in concept upper is has difference, it also is 一致. 概括 说: 炭黑 “ dispersion property ”应该 is in coating material in production, 储存, use full process in, 炭黑由 large pellets also formed poly 体, again poly 集体, uniform, stability mixed solvent coating material system and film in can force and water 平.

当炭黑 dispersion property good 时, coating material tool has below/following features:

① optical property 质如黑 degree, color force, gloss, cover/cap force and other good;

② flow property good;

③ dispersion stability property good;

④ coating film slip property, gloss maintain property, mechanical properties （如 hardness, elongation, impact strong/high degree and property ）, weather resistance improve/increase.

由此 can 见, in coating material system in in 状态, is dispersion property, is show/display other property can （如黑 degree, color force, gloss, flow property, mechanical properties ） 决定 property factors.