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CN106883453B - The preparation method of modified white carbon black with chemical isolation structure - Google Patents

The preparation method of modified white carbon black with chemical isolation structure Download PDF

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CN106883453B
CN106883453B CN201710165061.7A CN201710165061A CN106883453B CN 106883453 B CN106883453 B CN 106883453B CN 201710165061 A CN201710165061 A CN 201710165061A CN 106883453 B CN106883453 B CN 106883453B
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carbon black
white carbon
modified
silica
suspension
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CN106883453A (en
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张立群
郑骏驰
王益庆
韩冬礼
叶欣
张奇峰
陈莺
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Beijing University of Chemical Technology
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Beijing University of Chemical Technology
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00Use of pretreated ingredients
    • C08K9/04Ingredients treated with organic substances
    • C08K9/06Ingredients treated with organic substances with silicon-containing compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/34Silicon-containing compounds
    • C08K3/36Silica
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00Use of pretreated ingredients

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Abstract

The preparation method of modified white carbon black with chemical isolation structure is related to for the method for chemical isolation being applied to the modified field of white carbon black.White carbon black can be grafted on using silane coupling agent, and the characteristics of the organo-functional group in silane coupling agent can be reacted with particular functional group, prepares the modified white carbon black being isolated between white carbon black nano particle by organic segment.The modified white carbon black can as filler in use, stable evenly dispersed with nanoparticle form in a polymer matrix.The method of modifying is characterized in that, by a variety of methods, (I) or (II) structure is constructed between white carbon black nanoparticle, hard charcoal black track producing particle is isolated using the structure.This method can be both directly realized by with the acceptor modified white carbon black of (I) or (II) structure;The white carbon black modified by silane coupling agent of (III) structure can also be used, then further reacts to realize indirectly with by the compound of (IV) structure silane coupler modified white carbon black or (V) structure.

Description

The preparation method of modified white carbon black with chemical isolation structure
Technical field:
This application involves inorganic nanometer powder technical field of modification, the method for more particularly relating to white carbon black nano modification.
Background technique:
White carbon black is hydrated SiO 2 (SiO2-nH2Being commonly called as O) is a kind of to be usually used in the inorganic of enhancing by polymer field Powder body material.Disclosed in the micromorphology of white carbon black is studied by forefathers already, the white carbon black of naturally occurring has a three-decker: the One layer is primary partical or primary particle, is that the spheroidal particle for forming random three-dimensional chain branch structure is keyed by Si-O;The Two layers of hydroxyls dehydrate between a large amount of predecessors through surface is linked together to form secondary structure;Third layer is secondary knot Aggregation is continued by model ylid bloom action power and hydrogen bond between structure and forms big loose agglomerates.The primary particle partial size of white carbon black exists It is a kind of powder of Nano grade between 10-40nm, therefore, when white carbon black is increased in the form of primary particle for polymer material Qiang Shi, nanometer enhancement effect is significant, and reinforcing effect is good.However, there are a large amount of hydroxyls for unmodified white carbon black particle surface Base, this makes hard charcoal black track producing particle be extremely easy to reunite because of the effect of hydrogen bond between each other, this makes white carbon black be used directly in polymerization , can not be evenly dispersed with nanoscale primary partical in matrix in object enhancing, but deposited in the form of aggregation not of uniform size It is in matrix, it is special cannot to play nanofiller institute far beyond nano-scale in the base in this way for the size of the aggregate Some nanometer enhancement effects.To solve this problem, forefathers early have proposed the modified theory and method of white carbon black, wherein use White carbon black modified by silane coupling agent is accepted and is used extensively by people at present.It could be theoretically argued that silane coupling agent has silicon simultaneously Hydroxyl and organic group, silicone hydroxyl can be reacted with white carbon black surface hydroxyl, and organic group can make modified white carbon black It is not easy to autohemagglutination each other, so that white carbon black be promoted to disperse in a polymer matrix in the form of primary particle.However, traditional idol Connection agent modification does not ensure that modified white carbon black is evenly dispersed in a polymer matrix, and cannot be completely secured white carbon black with Primary particle form exists.Therefore, to guarantee in the polymer, white carbon black is long-term, is steadily dispersed in the form of primary particle.This Invention describe it is a kind of can steadily in the form of chemical isolation existing for modified white carbon black preparation method, it is white using the modification Carbon black enhances polymer, and the white carbon black in polymer may be implemented and be uniformly distributed in the form of single particle for a long time.This preparation method Simple and easy, raw material is cheap and easy to get, and product applicable surface is extensive and easy to use.
Summary of the invention:
The present invention constructs a kind of chemical isolation structure between white carbon black primary particle, to make modified white carbon black can With stable nano-dispersed structure reinforced polymer material.Meanwhile it is such with chemical isolation knot invention describes preparing The specific method of the modified white carbon black of structure.
The present invention is realized by following three kinds of specific embodiments:
Scheme one:
1. the preparation of white carbon black suspension:
Precipitated silica (filter cake, powder, suspension) plus water are taken, by white carbon black quality adjustment to suspension gross mass 3%wt-25%wt.According to the difference of white carbon black original state, stirred in the mechanical stirring equipment that revolving speed is 1000-5000rpm 3-10h etc. is mixed, uniform, stable white carbon black-water slurry is obtained.With in suspension, whether white carbon black average grain diameter reaches The following are standards by 600nm, judge whether the preparation of white carbon black suspension is completed.
2. white carbon black suspension temperature is adjusted:
Suspension known to above-mentioned white carbon black content is transferred in the ultrasonic cleaner with heating function, it is outstanding to this Supernatant liquid is stirred, and setting revolving speed is 500-2000rpm, to keep the suspension to have good mobility.Simultaneously to suspension Liquid heating, stablizes its temperature in a certain temperature value in 50-80 DEG C of section, sets supersonic frequency as 15- 40KHz。
3. white carbon black is modified:
Xiang Yixiang or more keeps constant addition white carbon black solid matter in the white carbon black suspension of temperature and holding flow regime The isolation modified version silane coupling agent with formula (I) or formula (II) structure feature for measuring 4%wt-18%wt, continues to be kept stirring And sonic oscillation.Modification time is 1-8 hours, guarantees that white carbon black suspension has good mobility during this period.
4. the drying of modified white carbon black:
The tank body inlet temperature of spray drying device is adjusted to 160-220 DEG C, while controlling equipment export temperature and existing 105-125℃.Above-mentioned modified isolated form white carbon black suspension is sucked in spray drying device tank body using peristaltic pump, After all white carbon black suspension are completely dried, dry isolated form modified white carbon black powder is collected.
Scheme two:
1. the preparation of white carbon black suspension:
Precipitated silica (filter cake, powder, suspension) plus water are taken, by white carbon black quality adjustment to suspension gross mass 3%wt-25%wt.According to the difference of white carbon black original state, stirred in the mechanical stirring equipment that revolving speed is 1000-5000rpm 3-10h etc. is mixed, uniform, stable white carbon black-water slurry is obtained.With in suspension, whether white carbon black average grain diameter reaches The following are standards by 600nm, judge whether the preparation of white carbon black suspension is completed.
2. white carbon black suspension temperature is adjusted:
Suspension known to above-mentioned white carbon black content is transferred in the ultrasonic cleaner with heating function, it is outstanding to this Supernatant liquid is stirred, and setting revolving speed is 500-2000rpm, to keep the suspension to have good mobility.Simultaneously to suspension Liquid heating, stablizes its temperature in a certain temperature value in 50-80 DEG C of section, sets supersonic frequency as 15- 40KHz。
3. white carbon black is modified:
The above white carbon black suspension is equally divided into two parts.To addition white carbon black solid masses 3%wt-15% in first part The silane coupling agent with formula (III) structure feature of wt, to addition white carbon black solid masses 3.5%wt-18%wt in second part The silane coupling agent with formula (IV) structure feature.Control the additional amount ratio with the silane coupling agent of formula (IV) structure feature The addition mole of silane coupling agent with formula (III) structure has more 15% to 35%.Continue to keep revolving speed to be 500- The stirring of 2000rpm and sonic oscillation, it is 1-6 hours modified.
4. the building of white carbon black isolation structure:
Both the above is mixed by different silane coupler modified white carbon black suspension respectively, the use of revolving speed is 500- 2000rpm mechanical stirring is uniformly mixed it, heats to the suspension, stablizes its temperature in 70-90 DEG C of section In a certain temperature value.With the use of ultrasonator, 2-10 hours are reacted
5. the drying of modified white carbon black:
The tank body inlet temperature of spray drying device is adjusted to 160-220 DEG C, while controlling equipment export temperature and existing 105-125℃.Above-mentioned modified isolated form white carbon black suspension is sucked in spray drying device tank body using peristaltic pump, After all white carbon black suspension are completely dried, dry isolated form modified white carbon black powder is collected.
Scheme three:
1. the preparation of white carbon black suspension:
Precipitated silica (filter cake, powder, suspension) plus water are taken, by white carbon black quality adjustment to suspension gross mass 3%wt-25%wt.According to the difference of white carbon black original state, stirred in the mechanical stirring equipment that revolving speed is 1000-5000rpm 3-10h etc. is mixed, uniform, stable white carbon black-water slurry is obtained.With in suspension, whether white carbon black average grain diameter reaches The following are standards by 600nm, judge whether the preparation of white carbon black suspension is completed.
2. white carbon black suspension temperature is adjusted:
Suspension known to above-mentioned white carbon black content is transferred in the ultrasonic cleaner with heating function, it is outstanding to this Supernatant liquid is stirred, and setting revolving speed is 500-2000rpm, to keep the suspension to have good mobility.Simultaneously to suspension Liquid heating, stablizes its temperature in a certain temperature value in 50-80 DEG C of section, sets supersonic frequency as 15- 40KHz。
3. white carbon black is modified:
White carbon black solid masses 4% is added into the white carbon black suspension for keeping constant temperature and holding flow regime above The isolation modified version silane coupling agent with formula (III) structure feature of wt-15%wt.Keeping revolving speed is the height of 500-2000rpm Speed stirring, and it is used cooperatively ultrasonator.The modification time is 1-8 hours, should guarantee white carbon black suspension always during this With good mobility.
4. the building of white carbon black isolation structure:
By rear white carbon black suspension modified above, continuing to use revolving speed is 500-2000rpm mechanical stirring, and outstanding to this Supernatant liquid heating, stablizes its temperature in a certain temperature value in 70-90 DEG C of section.Being added has formula (V) structure The compound of feature, additional amount is the 15-30% of the silane coupling agent additional amount with formula (III) structure, with the use of ultrasound Oscillator, reacts 4-8 hour, should guarantee during this white carbon black suspension with good mobility always.
H2N-R3-NH2
(Ⅴ)
5. the drying of modified white carbon black:
The tank body inlet temperature of spray drying device is adjusted to 160-220 DEG C, while controlling equipment export temperature and existing 105-125℃.Above-mentioned modified isolated form white carbon black suspension is sucked in spray drying device tank body using peristaltic pump, After all white carbon black suspension are completely dried, dry isolated form modified white carbon black powder is collected.
Prepared isolation modified white carbon black is characterized by experiment, organic is changed the results show that prepared by the present invention Property white carbon black structure is more loose, it is lipophilic dramatically increase, partial size is decreased obviously.The organically-modified white carbon black is added to polymer In matrix, it is uniformly dispersed good, significantly more efficient reinforcing effect can be played.
Detailed description of the invention:
Fig. 1 is by isolated form modified white carbon black made from preparation method described in embodiment 1 and the coupling agent modified hard charcoal of tradition Black scanning electron microscope (TEM) photo.
Fig. 2 is thermogravimetric (TG) map by isolated form modified white carbon black made from preparation method described in embodiment 2.
Fig. 3 is the contact angle figure by isolated form modified white carbon black made from preparation method described in embodiment 3.
Specific embodiment:
For a further understanding of the present invention, below with reference to embodiment to silane coupling agent of the present invention and preparation method thereof It is described with using preferred embodiment, but it is to be understood that these descriptions are intended merely to that spy of the invention is described in more detail It seeks peace advantage, but the claims in the present invention is not limited in any way.
Embodiment 1:
White carbon black VN3 powder is taken to be stirred by mass percentage for 15:85 with water, this white carbon black suspension is further It is stirred 10 hours under the speed of 3500rpm using high-speed stirred, uniform, stable white carbon black-water slurry is obtained with this, it is white The partial size of carbon black in water is 538nm after tested.The white carbon black-water slurry 600g is taken, is transferred to super with heating function In sound wave rinse bath, while the suspension is stirred, setting revolving speed is 800rpm, good to keep the suspension to have Mobility.Suspension is heated, until 75 DEG C, supersonic frequency is set as 30KHz.Silane coupling agent (A) is added into the suspension 9g is kept stirring, and keeps modification temperature, reacts it 4 hours.The tank body inlet temperature of spray drying device is adjusted to 160-220 DEG C, while equipment export temperature is controlled at 105-125 DEG C.By above-mentioned modified isolated form white carbon black suspension benefit With in peristaltic pump sucking spray drying device tank body, after all white carbon black suspension are completely dried, dry isolated form is collected Modified white carbon black powder.The modified white carbon black with chemical isolation structure is taken to be scanned electron microscope (SEM) observation, and Scheme to compare with the SEM of traditional acceptor modified white carbon black, it is possible to find there is white carbon black entirety after chemical isolation structure more to dredge Pine, dispersibility are more preferable.See Fig. 1.
Silane coupling agent (A)
Embodiment 2:
It takes white carbon black Z2000 suspension slurry to mix with water, white carbon black solid masses is adjusted to suspension gross mass 12%, and be stirred, this white carbon black suspension is further stirred 8 hours under the speed of 4500rpm, is obtained with this One, stable white carbon black-water slurry, the dispersity of white carbon black in water is good, and partial size is 513nm after tested.Take this White carbon black-water slurry 1000g is transferred in the ultrasonic cleaner with heating function, while stirring the suspension It mixes, setting revolving speed is 600rpm, to keep the suspension to have good mobility.Suspension is heated, until 70 DEG C, setting is super Acoustic frequency is 25KHz.Silane coupling agent (B) 10g is added into the suspension, is kept stirring, keeps modification temperature, makes its reaction 3 hours.The tank body inlet temperature of spray drying device is adjusted to 160-220 DEG C, while controlling equipment export temperature and existing 105-125℃.Above-mentioned modified isolated form white carbon black suspension is sucked in spray drying device tank body using peristaltic pump, After all white carbon black suspension are completely dried, dry isolated form modified white carbon black powder is collected.Take the powder through organic solvent Thermogravimetric analysis is carried out after extracting, and is compared with the thermogravimetric result of unmodified white carbon black, thus determines silane coupling agent (B) Scion grafting plays the role of that modified white carbon black is isolated, demonstrates white carbon black modification side of the present invention with this in white carbon black surface Method can effective modified white carbon black.See Fig. 2.
Silane coupling agent (B)
Embodiment 3:
It takes white carbon black K170 suspension slurry to mix with water, white carbon black solid masses is adjusted to suspension gross mass 10%, and be stirred, this white carbon black suspension is further used into high-speed stirred under the speed of 4000rpm and is stirred 9 hours, Uniform, stable white carbon black-water slurry is obtained with this, the dispersity of white carbon black in water is good, and partial size is after tested 487nm.The white carbon black-water slurry 500g is taken, is transferred in the ultrasonic cleaner with heating function, while to the suspension Liquid is stirred, and setting revolving speed is 800rpm, to keep the suspension to have good mobility.Suspension is heated, until 70 DEG C, supersonic frequency is set as 30KHz.Silane coupling agent (C) 5g is added into the white carbon black-water slurry, is kept stirring, keeps Modification temperature reacts it 4 hours.The white carbon black-water slurry 500g is taken again, and it is clear to be transferred to the ultrasonic wave with heating function In washing trough, while the suspension is stirred, setting revolving speed is 800rpm, to keep the suspension to have good flowing Property.Suspension is heated, until 70 DEG C, supersonic frequency is set as 30KHz.It is added into the white carbon black-water slurry silane coupled Agent (D) 4g, is kept stirring, and keeps modification temperature, reacts it 4 hours.Both the above is changed by different silane coupling agents respectively Property the mixing of white carbon black suspension, suspension is heated, until 80 DEG C, sets supersonic frequency as 20KHz.It is in speed of agitator In the case where 600rpm, react 5 hours.Above-mentioned modified isolated form white carbon black suspension is sucked into spraying do using peristaltic pump In dry equipment tank body, after all white carbon black suspension are completely dried, dry isolated form modified white carbon black powder is collected.It should After powder tabletting, the contact angle of water and the modified white carbon black is tested, and by the water contact angle of the contact angle and unmodified white carbon black It compares, sees Fig. 3.It can be seen that the hydrophily of modified white carbon black is remarkably decreased, this illustrates that organic coupling agent is present in white carbon black Surface, it was demonstrated that white carbon black method of modifying of the present invention can effective modified white carbon black.
Silane coupling agent (C)
Silane coupling agent (D)
Embodiment 4:
It takes white carbon black K160 filter cake to mix with water, white carbon black solid masses is adjusted to the 6% of suspension gross mass, and stir Mixing is mixed, this white carbon black suspension is further used into high-speed stirred under the speed of 3000rpm and is stirred 6 hours, is obtained with this Uniform, stable white carbon black-water slurry, the dispersity of white carbon black in water is good, and partial size is 459nm after tested.It takes The white carbon black-water slurry 1000g is transferred in the ultrasonic cleaner with heating function, while being carried out to the suspension Stirring, setting revolving speed are 600rpm, to keep the suspension to have good mobility.Suspension is heated, until 60 DEG C, setting Supersonic frequency is 35KHz.Silane coupling agent (C) 4g is added into the white carbon black-water slurry, is kept stirring, keeps modified temperature Degree reacts it 4 hours.Compound (E) 0.6g is added later, keeps conditions above, futher stirs reaction 4 hours.It will be upper Modified isolated form white carbon black suspension is stated using in peristaltic pump sucking spray drying device tank body, is suspended in all white carbon blacks After liquid is completely dried, dry isolated form modified white carbon black powder is collected.To the powder carry out partial size test, and with it is unmodified white The partial size of carbon black compares, and as a result see the table below one.It can be seen that the white carbon black with chemical isolation structure has minimum partial size, it is white Because of the building of chemical isolation structure, reunion volume is decreased obviously carbon black.
Compound (E)
Table one
Unmodified white carbon black Traditional modified white carbon black Modified white carbon black is isolated
Partial size 459nm 352nm 268nm
Embodiment 5:
It takes white carbon black K160 suspension to mix with water, white carbon black solid masses is adjusted to the 10% of suspension gross mass, And be stirred, this white carbon black suspension is further used into high-speed stirred under the speed of 4000rpm and is stirred 7 hours, with this Uniform, stable white carbon black-water slurry is obtained, the dispersity of white carbon black in water is good, and partial size is after tested 473nm.The white carbon black-water slurry 500g is taken, is transferred in the ultrasonic cleaner with heating function, while to the suspension Liquid is stirred, and setting revolving speed is 1000rpm, to keep the suspension to have good mobility.Suspension is heated, until 80 DEG C, supersonic frequency is set as 30KHz.Silane coupling agent (C) 3.5g is added into the white carbon black-water slurry, is kept stirring, protects Modification temperature is held, reacts it 5 hours.Compound (F) 0.5g is added later, keeps conditions above, it is small to futher stir reaction 5 When.Above-mentioned modified isolated form white carbon black suspension is sucked in spray drying device tank body using peristaltic pump, all white After carbon black suspension is completely dried, dry isolated form modified white carbon black powder is collected.The powder is taken to carry out the survey of DBP adsorptive value Examination, as a result see the table below two.Between silica particles with chemical isolation structure, there is apparent organic isolated interstice, therefore, The white carbon black that oil factor can be modified much larger than tradition.
Table two
Unmodified white carbon black Traditional modified white carbon black Modified white carbon black is isolated
DBP adsorptive value (cm3/g) 2.01 2.91 3.82
Compound (F).

Claims (7)

1.具有化学隔离结构的改性白炭黑,其特征在于,改性白炭黑一次粒子间,具有式(Ⅰ)或式(Ⅱ)特征的化学隔离结构:1. The modified silica with a chemical isolation structure is characterized in that, among the primary particles of the modified silica, there is a chemical isolation structure characterized by formula (I) or formula (II): 1)R1为-CnH2n+1,其中n为1-30,或者为-(C2H4O)mH,其中m为1-30,或者为-(C2H4O)pCqH2q+1,其中p为1-20,q为1-30;1) R 1 is -C n H 2n+1 , wherein n is 1-30, or -(C 2 H 4 O) m H, wherein m is 1-30, or -(C 2 H 4 O) p C q H 2q+1 , where p is 1-20 and q is 1-30; 2)R2为-CxH2x-,其中x为1-5;2) R 2 is -C x H 2x -, wherein x is 1-5; 3)R3为-CyH2y-,其中y为1-15。3) R 3 is -C y H 2y -, wherein y is 1-15. 2.制备如权利要求1所述的具有化学隔离结构的改性白炭黑的方法,其特征在于,通过以下三种方式在白炭黑一次粒子之间构建隔离结构:2. the method for preparing the modified white carbon black with chemical isolation structure as claimed in claim 1, is characterized in that, by following three ways, build isolation structure between primary particles of white carbon black: 1)合成并直接使用具有式(Ⅰ)或(Ⅱ)结构特征的隔离改性型硅烷偶联剂直接改性白炭黑,得到具有化学隔离结构的改性白炭黑;1) synthesizing and directly modifying the silica by using the isolation-modified silane coupling agent having the structural characteristics of formula (I) or (II) to obtain the modified silica with a chemical isolation structure; 2)分别使用具有式(Ⅲ)和式(Ⅳ)结构的硅烷偶联剂改性白炭黑,然后使两种改性白炭黑反应,得到具有化学隔离结构的改性白炭黑;2) respectively using the silane coupling agent with the structure of formula (III) and formula (IV) to modify the silica, and then reacting the two kinds of modified silica to obtain the modified silica with a chemical isolation structure; 3)使用具有式(Ⅲ)结构的硅烷偶联剂改性白炭黑,然后在将该改性白炭黑与具有式(Ⅴ)结构特征的化合物反应,得到具有化学隔离结构的改性白炭黑;3) Use the silane coupling agent with the structure of formula (III) to modify the silica, and then react the modified silica with the compound with the structure of the formula (V) to obtain the modified silica with a chemical isolation structure. carbon black; 3.如权利要求2所述的具有化学隔离结构的改性白炭黑的制备方法,其特征在于,具体实施步骤如下:3. the preparation method of the modified white carbon black with chemical isolation structure as claimed in claim 2, is characterized in that, concrete steps are as follows: 1)制备白炭黑悬浮液:将多种形态的白炭黑与水进行混合,得到白炭黑-水悬浮液,其中白炭黑固体质量为3%wt-25%wt;1) Preparation of white carbon black suspension: mixing various forms of white carbon black with water to obtain a white carbon black-water suspension, wherein the solid quality of white carbon black is 3%wt-25%wt; 2)调节白炭黑悬浮液温度:将以上白炭黑悬浮液的温度调节至50-80℃,同时设置转速为500-2000rpm,以保持该悬浮液具有流动性,另外需要配合超声处理;2) Adjust the temperature of the white carbon black suspension: adjust the temperature of the above white carbon black suspension to 50-80 ° C, and set the rotating speed to 500-2000 rpm to keep the suspension fluid, and need to cooperate with ultrasonic treatment; 3)采用以下几种方式之一改性白炭黑:3) Use one of the following ways to modify silica: 3.1)向以上白炭黑悬浮液中加入具有式(Ⅰ)或(Ⅱ)结构特征的隔离改性型硅烷偶联剂,加入量为白炭黑固体质量的4%wt-18%wt,在超声处理的配合下,充分进行白炭黑改性,期间保证白炭黑悬浮液为流动态,改性时间为1-8小时;3.1) Add the isolation-modified silane coupling agent with the structural characteristics of formula (I) or (II) to the above silica suspension, and the amount added is 4%wt-18%wt of the solid mass of silica. With the cooperation of ultrasonic treatment, the silica modification is fully carried out, and the silica suspension is guaranteed to be fluid during the period, and the modification time is 1-8 hours; 3.2)将以上白炭黑悬浮液均分为两份,向以上两份白炭黑悬浮液中分别加入具有式(Ⅲ)和式(Ⅳ)结构特征的硅烷偶联剂,在超声处理的配合下,充分进行白炭黑改性,具有式(Ⅲ)结构的硅烷偶联剂的加入量为白炭黑固体质量的3%wt-15%wt,具有式(Ⅳ)结构特征的硅烷偶联剂的加入量为白炭黑固体质量的3.5%wt-18%wt,且应控制具有式(Ⅳ)结构特征的硅烷偶联剂的加入量比具有式(Ⅲ)结构的硅烷偶联剂的加入摩尔量多出15%至35%,期间保证白炭黑悬浮液为流动态,改性时间都为1-6小时,再将以上两种分别被不同硅烷偶联剂改性的白炭黑悬浮液混合,升温至70-90℃,依然在机械搅拌及超声处理的配合下,促使白炭黑悬浮液混合均匀,反应3-6时间;3.2) Divide the above silica suspension into two parts, add silane coupling agent with the structural characteristics of formula (III) and formula (IV) to the above two parts of silica suspension respectively, and in the coordination of ultrasonic treatment. Silica is fully modified, the amount of the silane coupling agent with the structure of formula (III) is 3%wt-15%wt of the solid mass of silica, and the silane coupling agent with the structure of formula (IV) The added amount of the agent is 3.5%wt-18%wt of the solid mass of silica, and the amount of the silane coupling agent with the structure of formula (IV) should be controlled to be higher than that of the silane coupling agent with the structure of formula (III). The molar amount added is 15% to 35% more. During this period, the silica suspension is guaranteed to be fluid, and the modification time is 1-6 hours. Then the above two kinds of silica modified by different silane coupling agents are added. The suspension is mixed, and the temperature is raised to 70-90 ° C, still under the cooperation of mechanical stirring and ultrasonic treatment, to promote the uniform mixing of the silica suspension, and the reaction takes 3-6 time; 3.3)向以上白炭黑悬浮液中加入具有式(Ⅲ)结构特征的硅烷偶联剂,加入量为白炭黑固体质量的4%wt-15%wt,在超声处理的配合下,充分进行白炭黑改性,期间保证白炭黑悬浮液为流动态,改性时间为1-6小时,再向以上用硅烷偶联剂改性后的白炭黑悬浮液中加入具有式(Ⅴ)结构的化合物,其加入量为具有式(Ⅲ)结构的硅烷偶联剂加入量的15%wt-30%wt,升温至70-90℃依然在机械搅拌及超声处理的配合下,反应4-8小时;3.3) Add a silane coupling agent with the structural characteristics of formula (III) to the above silica suspension, and the amount added is 4%wt-15%wt of the solid mass of silica. Under the cooperation of ultrasonic treatment, it is fully carried out. During the modification of silica, ensure that the silica suspension is fluid, and the modification time is 1-6 hours, and then add the formula (V) to the silica suspension modified with the silane coupling agent. The compound of the formula (III) is added in an amount of 15%wt-30%wt of the amount of the silane coupling agent with the structure of formula (III), and the temperature is raised to 70-90 ℃, still under the coordination of mechanical stirring and ultrasonic treatment, the reaction 4- 8 hours; 4)改性白炭黑的干燥:将改性后的白炭黑悬浮液干燥,收集干燥后的隔离改性型白炭黑粉体,即得到具有化学隔离结构的改性白炭黑。4) Drying of modified white carbon black: drying the modified white carbon black suspension, collecting the dried isolated modified white carbon black powder, that is, to obtain modified white carbon black with a chemical isolation structure. 4.如权利要求3所述的具有化学隔离结构的改性白炭黑的制备方法,其特征在于,所述第1)步中白炭黑悬浮液的制备是使用机械搅拌工艺进行的,其搅拌速度为1000-5000rpm,时间为3-10h。4. the preparation method of the modified white carbon black with chemical isolation structure as claimed in claim 3, is characterized in that, in the described 1) step, the preparation of white carbon black suspension is to use mechanical stirring technique to carry out, its The stirring speed is 1000-5000rpm, and the time is 3-10h. 5.如权利要求3所述的具有化学隔离结构的改性白炭黑的制备方法,其特征在于,所述第2)及3)步中调节白炭黑浆液温度及白炭黑改性都是在具有加温功能的超声波清洗槽中进行的,超声频率为15-40KHz。5. the preparation method of the modified white carbon black with chemical isolation structure as claimed in claim 3, is characterized in that, in the described 2) and 3) step, regulate white carbon black slurry temperature and white carbon black modification both. It is carried out in an ultrasonic cleaning tank with heating function, and the ultrasonic frequency is 15-40KHz. 6.如权利要求3所述的具有化学隔离结构的改性白炭黑的制备方法,其特征在于,所述第3.1)步中涉及的具有式(Ⅰ)结构的硅烷偶联剂是利用具有式(Ⅲ)结构的硅烷偶联剂与式(Ⅴ)结构的二胺类化合物反应得到;具有式(Ⅱ)结构的硅烷偶联剂是利用具有式(Ⅲ)结构的硅烷偶联剂与式(Ⅳ)结构的硅烷偶联剂反应得到;反应在100-180℃,氮气保护条件下进行,搅拌反应0.5-4小时;其中R1,R2,R3所表示含义同上述相一致。6. The preparation method of the modified silica with chemical isolation structure as claimed in claim 3, wherein the silane coupling agent with the structure of formula (I) involved in the step 3.1) is made of The silane coupling agent of the formula (III) structure is obtained by reacting with the diamine compound of the formula (V) structure; the silane coupling agent of the formula (II) structure is obtained by using the silane coupling agent of the formula (III) structure and the formula The silane coupling agent of the structure (IV) is obtained by reaction; the reaction is carried out at 100-180° C. under nitrogen protection, and the reaction is stirred for 0.5-4 hours; the meanings of R 1 , R 2 and R 3 are the same as the above. 7.如权利要求3-5任意一项所述的具有化学隔离结构的改性白炭黑的制备方法,其特征在于,所述第4)步中改性白炭黑的干燥是利用喷雾干燥设备完成的,喷雾干燥设备的入口温度设置在160-220℃,同时控制设备出口温度在105-125℃。7. the preparation method of the modified white carbon black with chemical isolation structure as described in any one of claim 3-5, it is characterized in that, described the 4th) in step, the drying of modified white carbon black is to utilize spray drying When the equipment is completed, the inlet temperature of the spray drying equipment is set at 160-220°C, while the outlet temperature of the equipment is controlled at 105-125°C.
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