CN103833601A - Foaming agent preparation process based on control of epoxy chloropropane amount - Google Patents
Foaming agent preparation process based on control of epoxy chloropropane amount Download PDFInfo
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- CN103833601A CN103833601A CN201210482250.4A CN201210482250A CN103833601A CN 103833601 A CN103833601 A CN 103833601A CN 201210482250 A CN201210482250 A CN 201210482250A CN 103833601 A CN103833601 A CN 103833601A
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- epoxy chloropropane
- whipping agent
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Abstract
The invention discloses a foaming agent preparation process based on control of the epoxy chloropropane amount. The foaming agent preparation process comprises the steps: (a) firstly, according to a certain proportion, adding epoxy chloropropane, sodium hydrogen sulfite, deionized water, a catalyst and an initiator into a reactor, and controlling the epoxy chloropropane amount to be 30%-50% of the total monomer amount; (b) under a condition of stirring, adjusting the reaction temperature of the reaction system, and carrying out a reaction for a period of time; (c) after aging the reactants for a period of time at a certain temperature, carrying out deionized water treatment; (d) distilling under a certain pressure, then cooling, and thus obtaining the target product. The foaming agent used in the petroleum exploitation field can be successfully prepared, moreover, the epoxy chloropropane amount is greatly reduced, the reaction conversion rate is high, the surface activity is improved, and the foam performance of the product is good; and moreover, by controlling the epoxy chloropropane amount in the preparation procedure, the reaction conversion rate and the product quality are improved.
Description
Technical field
The present invention relates to a kind of whipping agent preparation technology based on controlling epoxy chloropropane consumption.
Background technology
Whipping agent is exactly to make rubber, plastics form the material of microvoid structure.Can be solid, liquid or gas, comprise chemical foaming agent and pneumatogen.
So-called whipping agent is exactly the material that makes object material pore-forming, and it can be divided into chemical foaming agent and pneumatogen and tensio-active agent three major types.Chemical foaming agent is that those can discharge the gas such as carbonic acid gas and nitrogen after thermal degradation, and in polymkeric substance composition, forms the compound of pore; Pneumatogen be exactly foam pore be by the variation of the physical aspect of a certain material, form by expansion, the volatilization of liquid or the dissolving of solid of pressurized gas; Whipping agent all has higher surfactivity, can effectively reduce the surface tension of liquid, and arranges and surround air at liquid film surface electric double layer, forms bubble, then forms foam by single isolated bubbles.
Chemical foaming agent has again dividing of inorganic foaming agent and organic blowing agent.
Organic blowing agent mainly contains following a few class:
1. azo-compound;
2. sulfonyl hydrazines compound
3. nitroso compound.
Inorganic foaming agent mainly contains following classification:
Carbonate: a kind of inorganic foaming agent, using more is mainly calcium carbonate, magnesiumcarbonate, sodium bicarbonate.Wherein sodium bicarbonate is white powder, proportion 2.16.Decomposition temperature is about 100-140 DEG C, and emits part CO2, loses whole CO2 during to 270 DEG C.Water-soluble and be insoluble to alcohol.
Water glass: i.e. water glass, when mixing with glass powder and being heated to 850 DEG C of left and right, with glass reaction and emit a large amount of gas, simultaneously can reinforcement material resistance to compression and tensile strength, use mainly as the whipping agent of preparing multicellular glass.
Silicon carbide: the main whipping agent using in current multicellular glass industrial production, when 800-900 DEG C of sintering, emit a large amount of gas.
Carbon black: be also a kind of very handy whipping agent, add heat release CO2, foaming effect is good, but that shortcoming is price is higher.
Conventional pneumatogen has lower boiling alkane and fluorocarbon.Pneumatogen is Compositional type pneumatogen, not only has the advantages such as foam expansion is high, froth stability good, bleeding quantity is low, can also play certain modifying function to magnesia cement simultaneously, reduces the probability of product scumming.Pneumatogen has been widely used in the production of the foaming magnesite such as PLASTIC LAMINATED, light cellular partition board goods at present, and (magnesite fire-proof Men Xin etc.) have the key effect that it concerns the success or failure of the matter in some product.
The whipping agent whipping agent of the whipping agent of broad sense and narrow sense has broad sense and two concepts of narrow sense.These two concepts are to have certain difference, and it can distinguish whipping agent and the applicability whipping agent of non-applicability.
1. the whipping agent of broad sense refers to that all its aqueous solution can produce in a large number tensio-active agent or the surfactant of foam in the situation that of introducing air.Because most of tensio-active agents and surfactant all have the ability of a large amount of foamings, therefore, the whipping agent of broad sense has comprised most of tensio-active agents and surfactant.Thereby the scope of the whipping agent of broad sense is very large, kind is a lot, and its performance quality differs greatly, and has selectivity very widely.
The technical features such as the foam expansion of the whipping agent of broad sense (producing bubble ability), froth stability (operability) do not have strict requirement, only represent that it has the ability of certain a large amount of foams of generation, and can the foam of generation have actual purposes not define.
2. the whipping agent of the whipping agent narrow sense of narrow sense refers to that those not only can produce a large amount of foams, and foam has excellent properties, can meet the technical requirements of various products foaming, really can be for the production of actual tensio-active agent or surfactant.The maximum difference of it and broad sense whipping agent is exactly its using value, and what embody its using value is its excellent properties.It is strong especially that its excellent properties shows as foaming power, and unit volume bubble production volume is large, and foam is highly stable, can be for a long time froth breaking not, foam exquisiteness, and the consistency of working medium is good etc.
The whipping agent of narrow sense is exactly the whipping agent of industrial practical application, and the whipping agent generally it has often been said just refers to this class narrow sense whipping agent.Only have the whipping agent of narrow sense just to have the value of research and development.
In plastics, add some fillers, just can make some performance of plastics be improved, be more suitable for thus in some special purpose.In order to reduce the density and hardness of plastics, or strengthen its thermal insulation or sound-proofing, optimal filler is exactly space.The plastics that contain space or abscess, are categorized as porous plastics.Along with the degree of foaming, the difference of the volume share of the foam that namely cause in space, the performance of porous plastics and base plastic may have sizable difference.Whipping agent is a kind of chemical, can be added in plastics, and at the appropriate time of the course of processing, it can emit gas, makes to form in plastics abscess.
The formation of plastic foam generally can be divided into four-stage.First stage, whipping agent must be evenly dispersed in polymkeric substance completely, and polymkeric substance is liquid or molten state conventionally.Whipping agent now can form real solution in polymkeric substance, or is to be only evenly dispersed in polymkeric substance, forms two-phase system.Subordinate phase, after a large amount of single bubble formation, this system has been transformed into the system of a gas dispersion in liquid.Now often to add nucleating agent, to promote a large amount of small bubbles to form.Nucleating agent is generally superfine inert particle, and they provide position for the formation of new gas phase.
Phase III, the initial abscess forming is in continuous swell, and this is to have entered abscess because have more gas to spread and see through polymkeric substance.If enough long during this period of time, single abscess just will contact with each other.Break if separate the wall of single abscess, so, by this coalescent mode, will form larger abscess.If be mainly by the abscess foam forming that interconnects, be referred to as perforating foam.If the foam being formed by mutual disjunct abscess is just closed pore formula foam.If allowed, abscess is coalescent unrestrictedly to go on, and foam will subside so, and this is because gas has all automatically been separated with polymkeric substance.
Fourth stage, when polymer viscosity increases, when abscess can not increase again, foam will be stablized.Adopt cooling, crosslinked or other method can increase polymer viscosity.The rear three phases of foaming process, from the time, can be as short as part second, the longlyest also can not exceed several seconds.The formation of foam, requires polymkeric substance to be in a liquid state.For this reason, can pass through heating for dissolving or plasticizing polymerization thing.The production process of porous plastics is almost the same with any common plastics production process, conventionally passes through extrusion molding, rotational moulding and injection moulding, and the process such as plastipaste processing and thermoforming.By the same token, the plastics of any kind can be made porous plastics substantially.Polyvinyl chloride (hard and soft all can), polystyrene, polypropylene, ABS and polyethylene, all in commercial quantity make porous plastics.Heat-resistant engineering plastic and thermosetting polymer are also like this.
In the technological process of preparing whipping agent, epoxy chloropropane consumption will directly have influence on reaction conversion ratio and quality product, and suitable epoxy chloropropane consumption of how to confirm, seems particularly important to the preparation technology of whipping agent.
Summary of the invention
The object of the invention is to overcome the shortcoming and defect of above-mentioned prior art, a kind of whipping agent preparation technology based on controlling epoxy chloropropane consumption is provided, this technique can successfully be prepared the whipping agent for field of petroleum exploitation, and epoxy chloropropane consumption shortens greatly, reaction conversion ratio is high, improved surfactivity, product foaming properties is good; And in preparation process, pass through to control epoxy chloropropane consumption, thereby improved reaction conversion ratio and quality product.
Object of the present invention is achieved through the following technical solutions: a kind of whipping agent preparation technology based on controlling epoxy chloropropane consumption, comprises the following steps:
(a) first, according to a certain percentage epoxy chloropropane, sodium bisulfite, deionized water, catalyzer, initiator are added in reactor, and control epoxy chloropropane consumption accounts for 30%～50% of monomer total amount;
(b) under whipped state, regulate the temperature of reaction of reaction system, make its reaction for some time;
(c) after reactant for some time of ageing at a certain temperature, carry out deionized water processing;
(d) under certain pressure, distill, then cooling, obtain target product.
Described catalyzer is alkaline catalysts.
Described epoxy chloropropane consumption accounts for 35% of monomer total amount.
Described epoxy chloropropane consumption accounts for 45% of monomer total amount.
Described epoxy chloropropane consumption accounts for 40% of monomer total amount.
In sum, the invention has the beneficial effects as follows: can successfully prepare the whipping agent for field of petroleum exploitation, and epoxy chloropropane consumption shortens greatly, reaction conversion ratio is high, has improved surfactivity, and product foaming properties is good; And in preparation process, pass through to control epoxy chloropropane consumption, thereby improved reaction conversion ratio and quality product.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.
Embodiment:
A kind of whipping agent preparation technology based on controlling epoxy chloropropane consumption who the present invention relates to, comprises the following steps:
(a) first, according to a certain percentage epoxy chloropropane, sodium bisulfite, deionized water, catalyzer, initiator are added in reactor, and control epoxy chloropropane consumption accounts for 30%～50% of monomer total amount;
(b) under whipped state, regulate the temperature of reaction of reaction system, make its reaction for some time;
(c) after reactant for some time of ageing at a certain temperature, carry out deionized water processing;
(d) under certain pressure, distill, then cooling, obtain target product.
Described catalyzer is alkaline catalysts.
Described epoxy chloropropane consumption accounts for 35% of monomer total amount.
Described epoxy chloropropane consumption accounts for 45% of monomer total amount.
Described epoxy chloropropane consumption accounts for 40% of monomer total amount.
In the technological process of preparing whipping agent, epoxy chloropropane consumption will directly have influence on reaction conversion ratio and quality product, and suitable epoxy chloropropane consumption of how to confirm, seems particularly important to the preparation technology of whipping agent.In order to obtain best epoxy chloropropane consumption, the present invention has done the impact experiment of different epoxy chloropropane consumptions on reaction conversion ratio and quality product, result is known by experiment: different epoxy chloropropane consumptions is very large on reaction conversion ratio and quality product impact, suitably increase epoxy chloropropane consumption, can improve reaction conversion ratio, but, in the time that epoxy chloropropane consumption is brought up to certain value, increase again epoxy chloropropane consumption, not only can not improve reaction conversion ratio, also the quality of product will be reduced, therefore after considering, epoxy chloropropane consumption of the present invention accounts for 40% of monomer total amount, and the best is 30%.
The above, be only preferred embodiment of the present invention, not the present invention done to any pro forma restriction, every foundation technical spirit of the present invention, and any simple modification, equivalent variations that above embodiment is done, within all falling into protection scope of the present invention.
Claims (5)
1. the whipping agent preparation technology based on controlling epoxy chloropropane consumption, is characterized in that, comprises the following steps:
(a) first, according to a certain percentage epoxy chloropropane, sodium bisulfite, deionized water, catalyzer, initiator are added in reactor, and control epoxy chloropropane consumption accounts for 30%～50% of monomer total amount;
(b) under whipped state, regulate the temperature of reaction of reaction system, make its reaction for some time;
(c) after reactant for some time of ageing at a certain temperature, carry out deionized water processing;
(d) under certain pressure, distill, then cooling, obtain target product.
2. the whipping agent preparation technology based on controlling epoxy chloropropane consumption according to claim 1, is characterized in that, described catalyzer is alkaline catalysts.
3. the whipping agent preparation technology based on controlling epoxy chloropropane consumption according to claim 1, is characterized in that, described epoxy chloropropane consumption accounts for 35% of monomer total amount.
4. the whipping agent preparation technology based on controlling epoxy chloropropane consumption according to claim 1, is characterized in that, described epoxy chloropropane consumption accounts for 45% of monomer total amount.
5. the whipping agent preparation technology based on controlling epoxy chloropropane consumption according to claim 1, is characterized in that, described epoxy chloropropane consumption accounts for 40% of monomer total amount.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210482250.4A CN103833601A (en) | 2012-11-25 | 2012-11-25 | Foaming agent preparation process based on control of epoxy chloropropane amount |
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| CN201210482250.4A CN103833601A (en) | 2012-11-25 | 2012-11-25 | Foaming agent preparation process based on control of epoxy chloropropane amount |
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| CN103833601A true CN103833601A (en) | 2014-06-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105037218A (en) * | 2015-07-08 | 2015-11-11 | 如皋市万利化工有限责任公司 | Production process for dodecyl hydroxysulfobetaine |
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2012
- 2012-11-25 CN CN201210482250.4A patent/CN103833601A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105037218A (en) * | 2015-07-08 | 2015-11-11 | 如皋市万利化工有限责任公司 | Production process for dodecyl hydroxysulfobetaine |
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Application publication date: 20140604 |