CN110283460A - A kind of liquid silica gel rubber compounding and preparation method thereof - Google Patents

A kind of liquid silica gel rubber compounding and preparation method thereof Download PDF

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Publication number
CN110283460A
CN110283460A CN201910647512.XA CN201910647512A CN110283460A CN 110283460 A CN110283460 A CN 110283460A CN 201910647512 A CN201910647512 A CN 201910647512A CN 110283460 A CN110283460 A CN 110283460A
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CN
China
Prior art keywords
silica gel
stirring rod
liquid silica
reactor tank
gel rubber
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Pending
Application number
CN201910647512.XA
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Chinese (zh)
Inventor
吴文龙
吴晓晖
沈志文
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Suzhou Yabo Cold And Heat-Shrinkable Products Co Ltd
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Suzhou Yabo Cold And Heat-Shrinkable Products Co Ltd
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Priority to CN201910647512.XA priority Critical patent/CN110283460A/en
Publication of CN110283460A publication Critical patent/CN110283460A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18Stationary reactors having moving elements inside
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04Polysiloxanes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a kind of liquid silica gel rubber compoundings and preparation method thereof, belong to liquid silica gel preparation technical field, a kind of liquid silica gel rubber compounding, is prepared by following containing content of starting materials: silica 20%-50%, oligosiloxane 45%-75%, poly- methylhydrogen silicone 1%-10%, vulcanizing agent 2%-10%, chain extender 0.1%-5% and antiplastering aid 1%-15%;The present invention can make rubber mobility preferable by vulcanizing agent, reaction can be made to increase with temperature by chain extender to accelerate, it can prevent solution consistency is excessively high to be sticked to inside device by antiplastering aid, it is worked by reciprocating drive mechanism and drives stirring rod rotation, make stirring rod that stirring cleaning assemblies be driven also to clear up device inner wall while being stirred to solution, be not in the situation that consistency is sticked to greatly very much on device to making solution reaction thoroughly, improve preparation efficiency.

Description

A kind of liquid silica gel rubber compounding and preparation method thereof
Technical field
The present invention relates to liquid silica gel preparation technical field more particularly to a kind of liquid silica gel rubber compounding and its preparation sides Method.
Background technique
Liquid silica gel with respect to solid high-temperature sulphurated siliastic for, be liquid glue, there is good fluidity, vulcanization is fast The characteristics of, the requirement of food grade can be fully achieved in safer environmental protection, according to functional group's (i.e. crosslinking points) position contained in molecular structure It sets, the liquid rubber with functional group is often divided into two major classes: one kind is that functional group is in the referred to as distant of molecular structure both ends Claw type liquid rubber;It is another kind of be active function groups in main chain in random distribution, i.e., the so-called band functional group in molecular structure Person, referred to as non-distant claw type liquid rubber, liquid silastic can be used for trade mark, product, nipple, medical supplies, coating, dipping and filling Note etc., the silica gel products such as molding die, injection molding process, Cake mould for polyester resin, polyurethane, epoxy resin etc., The moisture-proof of electronic component, delivery, the coating of insulation and Embedding Material are widely used as in electronics industry, to electronic component and group Component plays dust-proof, moisture-proof, shockproof and insulation protection, such as uses clear gel pot electronics component, can not only play anti- Shake waterproofing protection effect.
It is that CN102381896B discloses a kind of culture medium and preparation method thereof, crab flavour mushroom liquid through retrieval Authorization Notice No. Spawn incubation based formulas, including raw material and aqueous solution, raw material include following weight ratio component: white granulated sugar 1.5%-2.5%, beans Dregs of rice powder 0.1%-0.3%, yeast extract 0.1%-0.3%, potassium dihydrogen phosphate 0.05%-0.1%, magnesium sulfate 0.05%- 0.1%.The preparation method of crab-flavor mushroom liquid strain medium formula includes the following steps: that culture medium is configured, adjusts, sterilizes, connect Kind culture, due to the adoption of the above technical scheme, after culture medium of the present invention as crab flavour mushroom liquid spawn, crab flavour mushroom mycelium Grow that fast, energetic, hyphae content is high, the strain germination rate after inoculation is good, fermentation period is short, high yield rate, although this patent Yield rate can be improved, but there are still defects, may cause reaction slowly not by natural response time when prepared by raw material Thorough viscosity is excessively high, and being sticked on device inner wall should not remove.
It is that CN101844952B discloses a kind of humic acid liquid fertilizer formula and production method through retrieval Authorization Notice No., relates to And agricultural fertilizer field, which is characterized in that by humic acid >=8%, iron 0.2-1%, manganese 0.6-1%, zinc 0.3-1%, copper 0.2- 1%, boron 0.5-1%, two or more any combination >=2% of molybdenum 0.2-1% and water mix, after being sufficiently stirred Place 1~2 hour, packing be product, the product can not only balanced soil fertility, activating soil nutrient, promote nutrient it is abundant Absorption, increases yield at regulating crop growth, and can improve crop quality, improve utilization rate of fertilizer;Compared with similar products, Good with fertilizer efficiency, preparation process is simple, and raw material is easy to get, the cheap feature of preparation cost, although this patent preparation cost is low, By natural response time may cause reaction slowly there are still defect, when prepared by raw material, to be not thorough viscosity excessively high, is sticked to device It should not be removed on inner wall.
Existing liquid silica gel rubber by allowing raw material natural reaction, may should be reaction and be not thorough and cause in the preparation Liquid density is excessively high, keeps product quality unqualified and is easily sticked to be not easily cleaned on device inner wall, in order to solve the above problem I Propose a kind of liquid silica gel rubber compounding and preparation method thereof.
Summary of the invention
The purpose of the present invention is to solve the problems of the prior art, and a kind of liquid silica gel rubber compounding that proposes and Preparation method.
To achieve the goals above, present invention employs following technical solutions:
A kind of liquid silica gel rubber compounding, is prepared by following containing content of starting materials:
Dioxide-containing silica accounts for the 20%-50% of total amount;
Oligosiloxane content accounts for the 45%-75% of total amount;
Poly- methylhydrogen silicone content accounts for the 1%-10% of total amount;
Vulcanization agent content accounts for the 2%-10% of total amount;
Chain extender content accounts for the 0.1%-5% of total amount;
Anti-stick agent content accounts for the 1%-15% of total amount.
Preferably, organic peroxide can be used in the vulcanizing agent, such as dibenzoyl peroxide, 25-diformazan bases 5- Di-t-butyl peroxyhexane.
Preferably, the chain extender is the double pyrrolidones silane of methyl ethylene.
Preferably, the antiplastering aid is stearic amide.
Preferably, respectively take out 25% silica, 50% oligosiloxane, 5% poly- methylhydrogen silicone, 6% vulcanizing agent, 4% chain extender and 10% antiplastering aid simultaneously be added to inside preparation facilities, carry out heating mixing 10 Mixed solution is taken out after minute.
Preferably, it is connected with shell at the top of the reactor tank, the case top inner wall is rotatably connected to stirring rod, described Stirring rod passes through reactor tank roof and extends to inside reactor tank, and the enclosure interior is connected with reciprocating drive mechanism, described reciprocal Driving mechanism is connected with the bar wall that stirring rod is placed in enclosure interior, is connected on the bar wall that the stirring rod is placed in inside reactor tank Cleaning assemblies is mixed, is connected with feed pipe at the top of the reactor tank, the reaction pot bottom is connected with discharge nozzle.
Preferably, the reciprocating drive mechanism includes half wheel gear of driving and complete gear wheel, half gear teeth tooth of the driving Wheel is connected on case top inner wall, and the complete gear wheel is connected to stirring rod and is placed on the bar wall of enclosure interior, the driving Half wheel gear is meshed with complete gear wheel, and the stirring rod covers on the bar wall between complete gear wheel and case top inner wall It is connected to spring.
Preferably, the stirring cleaning assemblies includes paddle and scraping blade, and the paddle is connected to stirring rod and is placed in instead Answer on the bar wall inside tank, the scraping blade is connected with paddle far from one end of stirring rod, the scraping blade with react top tank structure phase It supports.
Compared with prior art, the present invention provides a kind of liquid silica gel rubber compounding and preparation method thereof, have following The utility model has the advantages that
1, raw material is passed through feed pipe according to suitable ratio together and knocked down in reactor tank by the liquid silica gel rubber compounding Portion can make rubber mobility preferable by peroxide as vulcanizing agent, be made by the double pyrrolidones silane of methyl ethylene For reaction can be made to increase with temperature for chain extender and accelerates, solution consistency can be prevented excessively high by stearic amide antiplastering aid And be sticked to inside device, by driving the rotation of half gear teeth working gear, connect when driving half wheel gear one side with teeth with complete gear wheel It will drive stirring rod rotation when touching, when half wheel gear of drive does not have the one side of tooth to contact with complete gear wheel, in the reaction of spring It will drive stirring rod reset under power, stirring rod allow to carry out reciprocating rotation, so as to drive paddle to carry out reciprocating rotation Mixed solution is stirred, accelerating solution reaction speed keeps solution mixing more uniform, and scraping blade can be to reaction top tank structure It is cleared up, viscous fluid is prevented to be sticked on inner wall, so that making solution reaction thoroughly is not in that consistency is sticked on device greatly very much Situation improves preparation efficiency.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of liquid silica gel rubber preparation facilities proposed by the present invention;
Fig. 2 is a kind of liquid silica gel rubber preparation facilities schematic diagram of internal structure proposed by the present invention;
Fig. 3 is part A structural schematic diagram in a kind of liquid silica gel rubber preparation facilities Fig. 2 proposed by the present invention.
In figure: 1, reactor tank;2, shell;3, stirring rod;4, half wheel gear of driving;5, complete gear wheel;6, spring;7, it stirs Mix leaf;8, scraping blade;9, feed pipe;10, discharge nozzle.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", "top", The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just In description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with Specific orientation construction and operation, therefore be not considered as limiting the invention.
Embodiment 1:
Referring to Fig.1-3, respectively take out 34% silica, 58% oligosiloxane, 8% poly- methyl hydrogen silicon oxygen Alkane passes through feed pipe 9 together and knocks down inside reactor tank 1, and viscosity is 2.1Pas after reaction, needs by driving half gear teeth tooth 4 work rotation of wheel will drive stirring rod 3 when half wheel gear 4 of driving one side with teeth is contacted with complete gear wheel 5 and rotate, when When half wheel gear 4 of driving does not have the one side of tooth to contact with complete gear wheel 5, it is multiple to will drive stirring rod 3 under the reaction force of spring 6 Position, allows stirring rod 3 to carry out reciprocating rotation, stirs so as to drive paddle 7 to carry out reciprocating rotation mixed solution It mixes, accelerating solution reaction speed keeps solution mixing more uniform, and scraping blade 8 can clear up 1 inner wall of reactor tank, prevent from gluing Magma is sticked on inner wall, to make solution reaction thoroughly and be not in the situation that consistency is sticked to greatly very much on device, improves preparation effect Rate.
Embodiment 2:
Referring to Fig.1-3, substantially the same manner as Example 1, the difference is that separately taking 6% vulcanizing agent, 4% chain extender Antiplastering aid with 10% passes through feed pipe 9 together and knocks down and carries out hybrid reaction inside reactor tank 1, passes through peroxide as vulcanization Agent can make rubber mobility preferable, reaction can be made with temperature as chain extender by the double pyrrolidones silane of methyl ethylene Degree increases and accelerates, and can prevent that solution consistency is excessively high to be sticked to inside device by stearic amide antiplastering aid, and solution is anti- After answering tank internal-response, density 1.5Pas, mixed solution will not because of on too thick and sticky wall in the device, thus Improve preparation efficiency.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (8)

1. a kind of liquid silica gel rubber compounding, which is characterized in that be prepared by following containing content of starting materials:
Dioxide-containing silica accounts for the 20%-50% of total amount;
Oligosiloxane content accounts for the 45%-75% of total amount;
Poly- methylhydrogen silicone content accounts for the 1%-10% of total amount;
Vulcanization agent content accounts for the 2%-10% of total amount;
Chain extender content accounts for the 0.1%-5% of total amount;
Anti-stick agent content accounts for the 1%-15% of total amount.
2. a kind of liquid silica gel rubber compounding according to claim 1, which is characterized in that the vulcanizing agent can be used organic Peroxide, such as dibenzoyl peroxide, 25-diformazan base 5-di-t-butyl peroxyhexanes.
3. a kind of liquid silica gel rubber compounding according to claim 2, which is characterized in that the chain extender is methyl second The double pyrrolidones silane of alkenyl.
4. a kind of liquid silica gel rubber compounding according to claim 3, which is characterized in that the antiplastering aid is stearic acid acyl Amine.
5. a kind of liquid silica gel method for preparing rubber as claimed in claim 4, which is characterized in that take out 25% dioxy respectively SiClx, 50% oligosiloxane, 5% poly- methylhydrogen silicone, 6% vulcanizing agent, 4% chain extender and 10% Antiplastering aid is added to inside preparation facilities simultaneously, is carried out heating mixing and is taken out mixed solution after ten minutes.
6. a kind of liquid silica gel rubber preparation facilities as claimed in claim 5, which is characterized in that described including reactor tank (1) It is connected with shell (2) at the top of reactor tank (1), shell (2) top inner wall is rotatably connected to stirring rod (3), the stirring rod (3) it passes through reactor tank (1) roof and extends to reactor tank (1) inside, the shell (2) is internally connected with reciprocating drive mechanism, institute It states reciprocating drive mechanism and is connected with the bar wall that stirring rod (3) is placed in shell (2) inside, the stirring rod (3) is placed in reactor tank (1) It is connected with mixing cleaning assemblies on internal bar wall, is connected with feed pipe (9) at the top of the reactor tank (1), the reactor tank (1) Bottom is connected with discharge nozzle (10).
7. a kind of liquid silica gel rubber preparation facilities according to claim 6, which is characterized in that the reciprocating drive mechanism Including half wheel gear (4) of driving and complete gear wheel (5), half wheel gear (4) of driving is connected to shell (2) top inner wall On, the complete gear wheel (5) is connected to stirring rod (3) and is placed on the internal bar wall of shell (2), the half wheel gear of driving (4) it is meshed with complete gear wheel (5), the stirring rod (3) is located at the bar between complete gear wheel (5) and shell (2) top inner wall Spring (6) are socketed on wall.
8. a kind of liquid silica gel rubber preparation facilities according to claim 7, which is characterized in that the stirring cleaning assemblies Including paddle (7) and scraping blade (8), the paddle (7) is connected to stirring rod (3) and is placed on the internal bar wall of reactor tank (1), The scraping blade (8) is connected with paddle (7) far from the one end of stirring rod (3), and the scraping blade (8) offsets with reactor tank (1) inner wall.
CN201910647512.XA 2019-07-17 2019-07-17 A kind of liquid silica gel rubber compounding and preparation method thereof Pending CN110283460A (en)

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Publication number Priority date Publication date Assignee Title
CN111440445A (en) * 2020-04-29 2020-07-24 杭州亨玛电力科技有限公司 Liquid silicone rubber and preparation method thereof

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