CN105419009B - A kind of method that semi-open type superheated steam spray drying process prepares high filled composite rubber master batch - Google Patents
A kind of method that semi-open type superheated steam spray drying process prepares high filled composite rubber master batch Download PDFInfo
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Abstract
A kind of method that semi-open type superheated steam spray drying process prepares high filled composite rubber master batch, is related to the preparation field of the high filled composite rubber master batch of rubber.The present invention is using modifying agent to inorganic filler modification, it is dispersed in rubber latex after grinding, the technique that high filled composite rubber master batch is prepared using drying process with atomizing again, successively include: plus water prepares inorganic filler suspension, modifier treatment is added, inorganic filler suspension after being fully ground is added in rubber latex, is stirred evenly and is spray-dried under the conditions of no demulsification, and powder or the compound rubber master batch product of microballon shape are obtained.Present invention process is simple, and rubber constituent retains completely, solves the problems, such as it is high fill rubber master batch, no flocculant is pollution-free, and drying time is short, and human factor is few, can consecutive production, stable product quality is easy to industrialize.Nano combined rubber master batch of the invention can make inorganic filler can be evenly dispersed in the form of nanoscale in rubber matrix, can be used for the fields such as tyres for passenger cars, engineering tread rubber.
Description
Technical field
The present invention relates to a kind of methods that semi-open type superheated steam spray drying process prepares high filled composite rubber master batch.This method
Gained rubber height fills nano combined rubber master batch and is mainly used in car tread rubber, the fields such as engineering tread rubber.
Background technique
Tradition prepares the method for rubber using rubber latex as raw material, through acid coagulation, then through tabletting or granulation, drying and dehydrating
And manufactured rubber.Not only the preparation time period is long for traditional handicraft, and essentially manual operation, and there are large errors.It produced
It is desiccant that a large amount of acid is needed in journey, and the waste water generated in treatment process can not be handled, and pollutes environment.Meanwhile tradition preparation
Rubber process quality is not easy to control, and it is poor to result in homogeneity of product.
In rubber industry field, drying process with atomizing has a small amount of application.But rubber latex makes since its viscosity is larger
It obtains and is easy viscous wall in spray-drying process, block feed pipe, or even the problems such as blocking atomizer, constrain and be spray-dried in rubber
The application in the dry field of glue.
To solve the above-mentioned problems, nanometer composite technology is introduced into spray drying art by people.It is inorganic in traditional handicraft
Addition manner of the filler in rubber matrix is often that dry method is kneaded.It is either added in open mill addition or mixer, all
It there is highly energy-consuming, is not easy to realize the effect of nano-dispersion, this is also the pass for obtaining composite material combination property and being obviously improved
Key technology.
Instantly, rubber master batch technology becomes the hot spot of rubber materials research, and the inorganic fillers such as carbon black, white carbon black, clay are in rubber
Nano-dispersion in lotion becomes the emphasis studied in rubber master batch technology.
Inorganic filler is after inorganic agent is handled, the shape after mutually interspersed buffer action in the mixed process with rubber latex
At well dispersed inorganic filler and the compound structure of rubber grain.And also because of inorganic filler between latex particle and latex particle
In the presence of forming a kind of mutually isolated effect so that the blocking blocking feed pipe of adhesion between latex particle, to solve spraying
Drying process prepares the difficult point of plugging during rubber.
Qiao Jin fine strain of millet professor of Beijing Chemical Institute of China Petrochemical Corporation et al. has invented a kind of full vulcanization powder
Preparation method (the patent No.: 00816450.9) of last rubber.They are the emulsion particle crosslinking sulphur that rubber latex is realized using irradiation
Change, after be spray-dried the powdered rubber vulcanized entirely.It is easily dispersed in plastic substrate, can be used to prepare various
Toughened plastics and thermoplastic elastomer (TPE).Zhu Yuefeng professor of Tsinghua University et al. has invented a kind of powder day of carbon nano-tube modification
Right rubber (the patent No.: 200510058999.6)；They are dispersed in water after handling carbon nano tube surface, with Heveatex
Then mixing prepares the powder natural rubber containing carbon nano-tube modification using spray drying process.
But spray drying, using there is many problems, is spray-dried to limit in rubber dryness in rubber materials
The development in field.Major limitation is in drying process, and it is more serious to will lead to rubber thermo-oxidative ageing since local temperature is excessively high,
Phenomena such as even burning.Most importantly rubber dryness, can be because of rubber viscous, so that latex blocks pipeline, wall built-up
Phenomena such as occur.
Superheated steam belongs to advanced technologies in spray drying technology in dry field at present, and drying mechanism is that will suspend
The liquid charging stocks such as liquid, solution form fine atomized droplets, considerably increase liquid charging stock under the action of high speed centrifugation or high pressure
Heated specific surface area in dried medium, dramatically shortens rate of drying, meanwhile, superheated steam spray drying device
Since its dried medium decreases material to ensure that material will not generate localized hyperthermia in the drying process for steam
Thermal oxide and degree of aging.
Using semi-open type Vapojet dryer, this is because vapor in the drying process, is continuously increased, if closure
Superheated steam, spraying tower pressure interior force can increase as the reaction time extends.When pressure reaches 1.5MPa, pressure valve can be automatic
It opens, extra vapor is discharged in tower, to realize that tower pressure interior force balances.
By modified to inorganic filler, mixed grinding uses the high filling of spray drying preparation nano combined after forming mixed liquor
Rubber master batch, the process employs a relatively simple efficiently step drying modes, reduce in traditional handicraft and flocculate, the processes such as washing,
Shorten the process time and saves cost simultaneously.And condensed water, ethyl alcohol for generating in process of production etc. will also make as recycling
With.It is just being in response to the policy of national environmental protection, is reducing the waste and environmental pollution of water resource,
Summary of the invention
The purpose of the present invention is to propose to it is a kind of it is easy to operate, at low cost, to be easy to industrialized novel high filling nano combined
Rubber master batch production technology provides a kind of high method for filling nano combined rubber master batch of semi-open type superheated steam spray drying process preparation.
Inorganic filler is predominantly configured to suspension slurry by processing step, is blended clearly, is stirred evenly with glue after modification grinding
Under conditions of guaranteeing mixed liquor without demulsification, carries out superheated steam and be spray-dried to obtain the high nano combined rubber master batch of filling.
In this technique, inorganic filler number is 25~120 parts, in the mixing of general dry method, still belongs to high number filling work
Skill.By the inorganic filler of modifier treatment, particle surface structure is changed during milled processed, with rubber latex
Effect forms the mixed emulsion not being demulsified, and forms 30~100 μm after the effect of the atomizer high speed centrifugation of spray drying device
Fine drop, biggish specific surface area quick dewatering drying in 100~350 DEG C of steam medium, because containing a large amount of
Filler exists, and forms preferable separation layer, so that forming powdered or graininess sizing material will not occur because of viscosity itself
Phenomena such as adhesion, wall built-up.It is finally acted on again through air inducing and brings delivery area into, obtained powder height and fill nano combined rubber master batch.In this way
Rubber master batch preparation process, solve in traditional handicraft that acid adding processing, wastewater treatment is not easy, the blob of viscose that flocculates is not easy to clean, dry for flocculation
The problems such as room drying time is long.In addition, because of inorganic filler after modified, the inorganic fillers energy such as white carbon black, carbon black, clay
It is more preferably compatible with sizing material, also solve conventional dry be kneaded in inorganic filler be not easy in rubber matrix that dispersion, energy consumption is high, dust
The problems such as big.Superheated steam drying process with atomizing is because superheated steam exists, the contact different from hot-air directly with sizing material, so that
Sizing material drying efficiency is fast, avoids in conventional drying processes the features such as drying time is long, sizing material is oxidizable, aging, and what is obtained receives
Meter Fu He rubber master batch thermal history is low, deterioration by oxidation is few, low power consumption and other advantages.
Technique of the invention is solved using following steps:
1. a kind of method that semi-open type superheated steam spray drying process prepares high filled composite rubber master batch, it is characterized in that: add water
The inorganic filler suspension that formulation content is 2%~30% grinds 15min after modifier treatment is added, will that treated is inorganic
Rubber latex is added in filler suspension, and inorganic filler quality is the 25~120% of rubber latex dry glue quality, after mixing evenly
To inorganic filler/rubber latex mixing suspension, particulate matter diameter is 5~20 μm in mixing suspension, spray drying treatment,
Atomization droplets diameter is 30~100 μm, 150~350 DEG C of spray drying device inlet temperature, 100~120 DEG C of outlet temperature, is obtained
To the compound rubber master batch of powdered rubber.
Further, inorganic filler is carbon black, white carbon black or clay.
When inorganic filler is hydrocarbon black powder, suspension concentration is 3~30%, and carbon black loading is rubber latex dry glue quality
30~60%.Modifying agent selects ethyl alcohol as size, and ethanol consumption is the 50~100% of carbon black mass.
When inorganic filler is white carbon black powder, suspension concentration is 10~30%, and white carbon black dosage is rubber latex dry glue
The 30~120% of quality.Modifying agent selects polyethylene glycol, silicon oxygen coupling agent, polyalcohol, dosage be white carbon black quality 1%~
5%, white carbon black suspension need to handle 1~3h before mixing with latex under 70~90 DEG C of heating conditions.
When inorganic filler be clay, suspension concentration be 2~20%, clay dosage be rubber latex dry glue quality 25~
120%.Modifying agent is quaternary ammonium salt, the quaternary ammonium salt that the used preferred main chain of quaternary ammonium salt is 12 to 18 containing carbon number, with clay
Mass ratio is 0.1%~5%.
Further, rubber latex is the clear lotion of glue, nature rubber latex, SBR emulsion, neoprene latex, butyronitrile
The mixing of rubber latex, butadiene-styrene-vinyl pyridine rubber lotion, butadiene-vinylpyridine rubber lotion and above-mentioned rubber latex.
Inorganic filler selects solid powder that water is added to be configured to suspension, handles to obtain uniform suspension through inorganic agent, than
As carbon black and the more difficult infiltration of water form more uniform suspension, it is therefore desirable to size processing be added, along with grinder is anti-
It can be prepared into homogeneous aqueous solution under multiple grinding.And white carbon black is easy to happen sedimentation agglomeration after adding water to be configured to suspension, need
It is heavy to form uniform aqueous solution that the anti-drop of some organic modifiers is added.Inorganic clay organises by quaternary ammonium salt-modified
Afterwards, lamellar structure changes, and piece interlamellar spacing increases, so that better effect is good when acting on micelle.
Uniform carbon black, white carbon black suspension are added in rubber latex after stirring, because of the effect of modifying agent, may make a large amount of
Inorganic particulate and rubber particles act on together, well dispersed rubber master batch product can be obtained after rapid dry.
And clay is added to the water hydration and forms clay liquid, and modifying agent appropriate is added, it can be by the piece interlayer of clay
Away from increase, so that the latex particle in rubber latex more preferably enters the piece interlayer of clay alteration clay, in spray drying wink
Between in drying process, the structure of latex particle insertion clay layer is able to intact reservation, the preferable clay filled rubber of forming properties
Glue product.
Beneficial effects of the present invention
A kind of method that semi-open type superheated steam spray drying process prepares high filled composite rubber master batch, processing step predominantly will
Inorganic filler is configured to well dispersed suspension slurry, is blended after modification grinding with rubber latex, stirs evenly guarantor
It under conditions of card is without demulsification, is spray-dried to obtain nano combined rubber master batch, the advantages of this method is:
1. avoiding using strong acid as coagulator, no sewage treatment is environmental-friendly.
2. reducing production cost, the waste of water resource is reduced.
3. the present invention is modified inorganic filler using modifying agent, it is dispersed in rubber matrix to improve inorganic filler.
4. non-glue ingredient retains completely, the quality of rubber is promoted.
5. simple process, equipment requirement is low, high production efficiency.
6. superheat steam drying, product thermal history is low, deterioration by oxidation is few.
7. the nano combined rubber master batch of the method for the present invention preparation, solves dust from flying caused by dry method mixing process, dirty
The problem of contaminating environment, reduces environmental pollution, saves cost.
8. preparation process of the invention, saves flocculation time, life cycle of the product is shortened, saves manpower and energy consumption,
Technique artifical influence factor is small, the stable product of readily available quality, is suitable for successional industrialized production.
Facilities and equipments of the invention are conventional equipment, all properties testing standard according to corresponding national standard into
Row.
Specific embodiment
Embodiment 1
Commercially available carbon black N234 powder 30g is added in 970g water, after mixing evenly, 15g ethyl alcohol is added, is ground after stirring
15min obtains carbon black suspension.Under stiring, it is mixed into the natural lotion that 333.3g solid content is 30%, obtaining partial size is 5 μm
The mixed liquor stirred evenly is carried out semi-open type superheated steam spray drying treatment by the mixed liquor of micelle, and atomized drop control exists
30 μm, spray drying inlet temperature is 150 DEG C, and outlet temperature is 80 DEG C, powdered nano combined rubber master batch is obtained, in drying process
Condensing recovery ethyl alcohol.Take above-mentioned rubber master batch 130phr, ZnO 5phr, stearic acid 2phr, anti-aging agent 1010NA 1phr, accelerant CZ
1.2phr, sulphur 2phr, refining glue survey curing curve and rubber processing performance after parking 8h, vulcanize at 143 DEG C, survey mechanical performance.
Embodiment 2
Commercially available carbon black N330 powder 60g is added in 140g water, after mixing evenly, 60g ethyl alcohol is added, is ground after stirring
15min obtains carbon black suspension.Under stiring, it is mixed into the Heveatex that 333.3g solid content is 30%, obtaining partial size is 20 μm
The mixed liquor stirred evenly is carried out semi-open type superheated steam spray drying treatment by the mixed liquor of micelle, and atomized drop control exists
100 μm, spray drying inlet temperature is 350 DEG C, and outlet temperature is 120 DEG C, obtains powdered nano combined rubber master batch, drying process
Middle condensing recovery ethyl alcohol.Above-mentioned rubber master batch 160phr is taken, remaining step is the same as embodiment 1.
Embodiment 3
Commercially available carbon black N110 powder 50g is added in 450g water, after mixing evenly, 30g ethyl alcohol is added, is ground after stirring
15min obtains carbon black suspension.Under stiring, it is mixed into the styrene-butadiene latex that 250g solid content is 40%, obtaining partial size is 10 μm of glue
The mixed liquor stirred evenly is carried out semi-open type superheated steam spray drying treatment by the mixed liquor of grain, and atomized drop is controlled in 50 μ
M, spray drying inlet temperature are 250 DEG C, and outlet temperature is 100 DEG C, obtains powdered nano combined rubber master batch, cold in drying process
Solidifying recycling ethyl alcohol.Above-mentioned rubber master batch 150phr is taken, remaining step is the same as embodiment 1.
Embodiment 4
Commercially available carbon black N234 powder 50g is added in 450g water, after mixing evenly, 30g ethyl alcohol is added, is ground after stirring
15min obtains carbon black suspension.Under stiring, field Heveatex and 125g solid content that 200g solid content is 25% are mixed into
For 40% SBR emulsion, the mixed liquor that partial size is 5 μm of micelles is obtained, the mixed liquor stirred evenly is subjected to semi-open type mistake
Hot steam spray drying treatment, atomized drop are controlled at 70 μm, and spray drying inlet temperature is 300 DEG C, outlet temperature 120
DEG C, obtain powdered nano combined rubber master batch, condensing recovery ethyl alcohol in drying process.Above-mentioned rubber master batch 150phr is taken, remaining step is same
Embodiment 1.
Embodiment 5
Commercially available white carbon black powder 30g is added in 270g water, after mixing evenly, 0.3g PEG 8000 is added,
70 DEG C of heating are lower to handle 3h, and 15min is ground after processing, obtains white carbon black suspension.Under stiring, being mixed into 200g solid content is
40% styrene-butadiene emulsion obtains the mixed liquor containing partial size for 1 μm of micelle, and the mixed liquor stirred evenly is carried out semi-open type overheat
Steam spray is dried, and atomized drop is controlled at 30 μm, and spray drying inlet temperature is 350 DEG C, and outlet temperature is 120 DEG C,
Obtain powdered nano combined rubber master batch.Above-mentioned rubber master batch 130phr is taken, remaining step is the same as embodiment 1.
Embodiment 6
Commercially available white carbon black powder 120g is added in 280g water, after mixing evenly, 4g isobutyl ethyl triethoxy silicane is added
Alkane handles 1h under 90 DEG C of heating, grinds 15min after processing, obtain white carbon black suspension.Under stiring, it is solid to be mixed into 166.7g
The concentrated natural latex that content is 60% obtains the mixed liquor that partial size is 6 μm of micelles, the mixed liquor stirred evenly is carried out half-open
Formula superheated steam spray drying treatment, atomized drop are controlled at 60 μm, and spray drying inlet temperature is 220 DEG C, and outlet temperature is
110 DEG C, obtain powdered nano combined rubber master batch.Above-mentioned rubber master batch 180phr is taken, remaining step is the same as embodiment 1.
Embodiment 7
Commercially available white carbon black powder 60g is added in 140g water, after mixing evenly, 2.4g n-butanol is added, adds at 90 DEG C
Heat is lower to handle 2h, is poured into colloid mill after processing and grinds 15min, obtains white carbon black suspension.Under stiring, 250g is mixed into contain admittedly
The neoprene latex that amount is 40%, obtains the mixed liquor that partial size is 8 μm of micelles, and the mixed liquor stirred evenly is carried out semi-open type
Superheated steam spray drying treatment, atomized drop are controlled at 80 μm, and spray drying inlet temperature is 180 DEG C, outlet temperature 100
DEG C, obtain the nano combined rubber master batch of graininess.Above-mentioned rubber master batch 160phr is taken, remaining step is the same as embodiment 1.
Embodiment 8
Commercially available white carbon black powder 60g is added in 140g water, after mixing evenly, 2.4g silicon oxygen coupling agent KH590 is added,
2h is handled under 90 DEG C of heating, is poured into after processing and grinds 15min in colloid mill, obtain white carbon black suspension.Under stiring, it is mixed into
The butadiene-vinylpyridine rubber lotion that the SBR emulsion and 125g solid content that 125g solid content is 40% are 40%, obtaining partial size is 10 μm
The mixed liquor stirred evenly is carried out semi-open type superheated steam spray drying treatment by the mixed liquor of micelle, and atomized drop control exists
70 μm, spray drying inlet temperature is 280 DEG C, and outlet temperature is 110 DEG C, obtains the nano combined rubber master batch of graininess.Above-mentioned rubber master batch
160phr, remaining step is the same as embodiment 1.
Embodiment 9
Commercially available natural sodium bentonite 500g is added in 10L deionized water, it is small that 5 are stirred under the revolving speed of 800r/min
When, after standing 24 hours, obtain clay/water slurry that solid content is 2.0%；1250g clay/water slurry is taken, 1g is added
Cetyl ammonium bromide is poured into after processing and grinds 15min in colloid mill, and white carbon black suspension is obtained.Under stiring, it is mixed into
The clear lotion of glue that 1250g solid content is 8% obtains the mixed liquor that partial size is 13 μm of micelles, the mixed liquor stirred evenly is carried out
Semi-open type superheated steam spray drying treatment, atomized drop are controlled at 70 μm, and spray drying inlet temperature is 280 DEG C, outlet temperature
Degree is 90 DEG C, obtains powdered nano combined rubber master batch.Above-mentioned rubber master batch 125phr, remaining step is the same as embodiment 1.
Embodiment 10
By commercially available natural sodium bentonite 100g be added 400g deionized water in, obtain solid content be 20% clay/
Water slurry is added 1g octadecyl bromination ammonium, pours into after processing and grind 15min in colloid mill, obtains uniform clay and suspends
Liquid.Under stiring, it is mixed into the natural lotion that 333.3g solid content is 30%, the mixed liquor that partial size is 15 μm of micelles is obtained, will stir
It mixes uniform mixed liquor and carries out semi-open type superheated steam spray drying treatment, atomized drop is controlled at 90 μm, is spray-dried import
Temperature is 260 DEG C, and outlet temperature is 110 DEG C, obtains powdered nano combined rubber master batch.Take above-mentioned rubber master batch 200phr, remaining step
With embodiment 1.
Embodiment 11
Commercially available natural sodium bentonite 50g is added in 450g deionized water, clay/water that solid content is 10% is obtained
Suspension is added 1g tetradecyl ammonium chloride, pours into after processing and grind 15min in colloid mill, obtain uniform slurry.
Under stiring, it is mixed into the butadiene-styrene-vinyl pyridine rubber lotion that 250g solid content is 40%, the mixed liquor that partial size is 10 μm of micelles is obtained, will stir
It mixes uniform mixed liquor and carries out semi-open type superheated steam spray drying treatment, atomized drop is controlled at 30 μm, is spray-dried import
Temperature is 350 DEG C, and outlet temperature is 110 DEG C, obtains powdered nano combined rubber master batch.Take above-mentioned rubber master batch 150phr, remaining step
With embodiment 1.
Embodiment 12
Commercially available natural sodium bentonite 60g is added in 340g deionized water, clay/water that solid content is 15% is obtained
Suspension is added 1.2g lauryl ammonium chloride, pours into after processing and grind 15min in colloid mill, obtains uniform clay and suspends
Liquid.Under stiring, the butadiene-styrene-vinyl pyridine rubber lotion that 125g solid content is 40% and the nitrile rubber that 125g solid content is 40% are mixed into
Lotion, obtains the mixed liquor that partial size is 20 μm of micelles, and the mixed liquor stirred evenly is carried out the spray drying of semi-open type superheated steam
Processing, atomized drop are controlled at 40 μm, and spray drying inlet temperature is 350 DEG C, and outlet temperature is 110 DEG C, obtain powdered receive
Meter Fu He rubber master batch.Above-mentioned rubber master batch 150phr is taken, remaining step is the same as embodiment 1.
Comparative example 1
Begin to pratise on machine in double roller by formula: natural gum (cloud mark 1) 100phr, carbon black 30phr, remaining compounding agent are as implemented
Example 1, remaining step such as embodiment 1.
Comparative example 2
Begin to pratise on machine in double roller by formula: natural gum (cloud mark 1) 100phr, white carbon black 30phr, remaining compounding agent are strictly according to the facts
Example 1 is applied, remaining step such as embodiment 1.
Comparative example 3
Begin to pratise on machine in double roller by formula: natural gum (cloud mark 1) 100phr, clay 20phr, remaining compounding agent is as implemented
Example 1, remaining step such as embodiment 1.
Comparative example 4
It begins to pratise on machine in double roller by formula: nitrile rubber 100phr, carbon black (N330) 50phr, remaining compounding agent such as embodiment
1, remaining step such as embodiment 1
Comparative example 5
It begins to pratise on machine in double roller by formula: neoprene 100phr, white carbon black 60phr, remaining compounding agent such as embodiment 1,
Remaining step such as embodiment 1
Comparative example 6
It begins to pratise on machine in double roller by formula: natural gum and butadiene-styrene rubber epoxy glue 100phr, carbon black 50phr, remaining compounding agent
Such as embodiment 1, remaining step such as embodiment 1.
Comparative example 7
Commercially available carbon black N234 powder 30g is added in 970g water, after mixing evenly, 15g ethyl alcohol is added, is poured into after stirring
15min is ground in colloid mill, obtains carbon black suspension.The field natural emulsion for being 25% with 400g mass percent is stirred
Mixing is added sulfuric acid solution and flocculates, and cleaning to neutrality, drying obtains the nano combined material of 30g carbon black/100g natural rubber
Material begins to pratise on machine by formula in double roller: taking above-mentioned material 130phr, remaining compounding agent such as embodiment 1, remaining step such as embodiment
1。
Comparative example 8
Commercially available white carbon black powder 30g is added in 970g water, after mixing evenly, 0.3g PEG 8000 is added,
90 DEG C of heating are lower to handle 2h, is poured into colloid mill after processing and grinds 15min, obtains white carbon black suspension.With 400g mass percentage
It is stirred mixing than the field natural emulsion for 25%, sulfuric acid solution is added and flocculates, cleans to neutrality, drying obtains
30g white carbon black/100g natural rubber nanocomposite begins to pratise on machine by formula in double roller: taking above-mentioned material 130phr,
Remaining compounding agent such as embodiment 1, remaining step such as embodiment 1.
Comparative example 9
Commercially available natural sodium bentonite 500g is added in 10L deionized water, it is small that 5 are stirred under the revolving speed of 800r/min
When, after standing 24 hours, obtain clay/water slurry that solid content is 2.0%；1000g clay/water slurry is taken, with 400g
The field natural emulsion that mass percent is 25% is stirred mixing, and sulfuric acid solution is added and flocculates, and cleaning to neutrality is dried
It is dry to obtain 20g clay/100g natural rubber nanocomposite, it begins to pratise on machine in double roller by formula: taking above-mentioned material
120phr, remaining compounding agent such as embodiment 1, remaining step such as embodiment 1.
The comparison of one embodiment and comparative example mechanical performance of table
Claims (2)
1. a kind of method that semi-open type superheated steam spray drying process prepares high filled composite rubber master batch, it is characterised in that: add water
The inorganic filler suspension that mass percent concentration is 2%~30% is prepared, grinds 15min after modifier treatment is added, it will
Rubber latex is added in inorganic filler suspension after processing, and inorganic filler quality is the 25~120% of rubber latex dry glue quality,
Inorganic filler/rubber latex mixing suspension is obtained after mixing evenly, and particulate matter diameter is 5~20 μ in mixing suspension
M, semi-open type superheated steam spray drying treatment, atomization droplets diameter are 30~100 μm, spray drying device inlet temperature
150~350 DEG C, 100~120 DEG C of outlet temperature, obtain the powdered or compound rubber master batch of microballon shape rubber；
Wherein, inorganic filler is carbon black, white carbon black or clay；
(1) it is 3~30% that hydrocarbon black powder, which prepares suspension quality percent concentration, and carbon black loading is rubber latex dry glue quality
30~60%；Modifying agent selects ethyl alcohol as size, and ethanol consumption is the 50~100% of carbon black mass；
(2) white carbon black powder prepare suspension concentration be 10~30%, white carbon black dosage be rubber latex dry glue quality 30~
120%；Modifying agent selects polyethylene glycol, silicon oxygen coupling agent, polyalcohol, and dosage is the 1%~5% of white carbon black quality, white carbon black
Suspension needs to handle 1~3h under 70~90 DEG C of heating conditions before mixing with latex；
(3) slurry concentration is 2~20%, and clay dosage is the 25~100% of rubber latex dry glue quality；Modifying agent
For quaternary ammonium salt, quaternary ammonium salt is the quaternary ammonium salt that the carbon containing number of main chain is 12 to 18, and the mass ratio with clay is 0.1%~5%.
2. preparation method according to claim 1, it is characterised in that: rubber latex is the clear lotion of glue, natural rubber cream
Liquid, SBR emulsion, neoprene latex, acrylonitrile-butadiene rubber latex, butadiene-styrene-vinyl pyridine rubber lotion, butadiene-vinylpyridine rubber lotion,
Or the mixing of above-mentioned rubber latex.
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| CN107312208B (en) * | 2017-08-10 | 2019-02-19 | 青岛科技大学 | A kind of white carbon black/rubber composite material preparation method |
| CN107325305B (en) * | 2017-08-10 | 2023-06-02 | 青岛科技大学 | Continuous production equipment for atomization drying of filler emulsion |
| CN107457933B (en) * | 2017-08-10 | 2019-04-02 | 青岛科技大学 | A kind of filler/rubber composite material preparation method |
| CN107325343B (en) * | 2017-08-10 | 2019-01-04 | 青岛科技大学 | A kind of graphene/rubber composite material preparation method |
| CN107556714A (en) * | 2017-10-13 | 2018-01-09 | 铜陵市永创变压器电子有限公司 | A kind of preparation method of transformer framework plastic composite |
| CN107556621A (en) * | 2017-10-13 | 2018-01-09 | 铜陵市永创变压器电子有限公司 | A kind of preparation method of nano aluminium oxide butadiene-styrene rubber capillary polypropylene composite shock-absorbing cushion material |
| CN109206679A (en) * | 2018-08-24 | 2019-01-15 | 中国工程物理研究院材料研究所 | It is a kind of that high-density packing is realized to uniform highly filled method in latex |
| CN111171390B (en) * | 2020-01-17 | 2021-12-14 | 青岛科技大学 | Preparation method of white carbon black/natural rubber composite material |
| CN117050405B (en) * | 2023-09-27 | 2024-02-02 | 惠东县合成化工实业有限公司 | High-strength sole adhesive and production process thereof |
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