CN103044625A - Method for preparing macromolecular water-absorbent resin waterproofing agent - Google Patents
Method for preparing macromolecular water-absorbent resin waterproofing agent Download PDFInfo
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- CN103044625A CN103044625A CN 201210330112 CN201210330112A CN103044625A CN 103044625 A CN103044625 A CN 103044625A CN 201210330112 CN201210330112 CN 201210330112 CN 201210330112 A CN201210330112 A CN 201210330112A CN 103044625 A CN103044625 A CN 103044625A
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Abstract
The invention discloses a method for preparing a macromolecular water-absorbent resin waterproofing agent. The method comprises the following steps of: (1) preparing a NaOH water solution; (2) performing neutral reaction; (3) performing graft polymerization reaction; (4) condensing and drying; (5) pulverizing to obtain a finished product. By the method for preparing the macromolecular water-absorbent resin waterproofing agent, the product is polymerized once without roasting and drying, so that the procedures are shortened, the pollution to the environment is avoided, and the waterproofing agent is safe and environment-friendly; the quality of the product is stable; a gelatinous product is formed after the product is in the water; and water molecules are firmly tied by a special three-dimensional spatial network structure, so that functions of waterproofing, water stop and seepage prevention are achieved.
Description
Technical field
The present invention relates to a kind of preparation method of hydroscopic high-molecular resin water-resisting agent.
Background technology
The super strength high molecule water-absorbing resin claims again SAP, it is the new functional macromolecule material of exploitation in nearly 30 years, because it has self decades of times and even thousands of times high water-retaining capacity, the high-water performance that pressurization is not also dewatered, leakage performance, high temperature resistant property, low temperature resistant and heat-insulating property are a kind of water swelling type high molecular polymers that contains the strongly hydrophilic groups such as carboxyl and have certain degree of crosslinking.It is water insoluble, also is insoluble to organic solvent, but peculiar water absorbing properties and water retention capacity are arranged, and possesses again the advantage of macromolecular material simultaneously, to the good stability of light, heat, soda acid.
The SAP water-resisting agent is that the mutual winding physical crosslinking by chemically crosslinked and polymer molecule interchain consists of, can form the gel product with the water that absorbs, its unique three-dimensional space network structure, water molecules is firmly held onto, have high strength water conservation, waterproof, sealing and anti-leakage function.The SAP water-resisting agent produces without obnoxious flavour, mixes with concrete in proportion, can improve concrete solid intensity, and density is 0.80g/cm3, ultimate compression strength 7.9MPa; Follow according to its performance of SAP water-resisting agent, can process: sealing water proof material, sealing material, the antifog material of antisweat, damping are processed material etc. except wet stock, mud and sewage.SAP water-resisting agent material, chance water is non-leakage, can play: the functions such as waterproof, antiseep, antisweat, high-low temperature resistant, temperature adjustment, greatly improve engineering construction quality, enhancement engineering material of construction function prolongs the engineering life-span, because water-resisting agent, excellent property is durable, with low cost and reducing the construction costs, and can bring into play huge effect in the engineering construction in future.
Summary of the invention
For the deficiency that prior art exists, technical problem to be solved by this invention is, a kind of preparation method of hydroscopic high-molecular resin water-resisting agent is provided, and shortened process reduces the production time, reduces production costs; Make this object of invention SAP water-resisting agent, run into water and form the gel product, its unique three-dimensional space network structure, water molecules is firmly held onto, reach waterproof, sealing and anti-leakage function, constant product quality.
For solving the problems of the technologies described above, the technical solution used in the present invention is that a kind of preparation method of hydroscopic high-molecular resin water-resisting agent comprises the following steps:
(1) the preparation NaOH aqueous solution: be 93% NaOH 229g with concentration, be dissolved in the 600g water;
(2) neutralization reaction: the NaOH aqueous solution for preparing is joined 1500g purity continuously greater than in 99.5% the vinylformic acid, carry out neutralization reaction, the reaction times is 22-28 minute, then cools to 60-70 ℃;
(3) graft copolymerization: in the solution after the neutralization reaction, disposable adding 460-500g carboxymethyl cellulose stirs, rotating speed is 80-120r/min, add again the agent of 10g polyethylene glycol crosslinked, then add 5g hydrogen peroxide initiator, carry out graft copolymerization, the temperature in the reaction process is controlled at 90 ℃-115 ℃, and the reaction times is 0.5 hour;
(4) solidify drying: reaction mixture is diverted in the polymerization digestor, reacts that mixed solution aggregates into solid after 10-20 minute, heat of polymerization makes the material seasoning in the polymerization process;
(5) pulverize: solid phase prod is ground into particle, gets product.
Preferably, the preparation method of hydroscopic high-molecular resin water-resisting agent comprises the following steps:
(1) the preparation NaOH aqueous solution: be 93% NaOH 229g with concentration, be dissolved in the 600g water;
(2) neutralization reaction: the NaOH aqueous solution for preparing is joined 1500g purity continuously greater than in 99.5% the vinylformic acid, carry out neutralization reaction, the reaction times is 20 minutes; Then cool to 60-70 ℃;
(3) graft copolymerization: in the solution after the neutralization reaction, disposable adding 500g carboxymethyl cellulose stirs, rotating speed is 90-110r/min, add again the agent of 10g polyethylene glycol crosslinked, then add 5g hydrogen peroxide initiator, carry out graft copolymerization, the temperature in the reaction process is controlled at 80 ℃-110 ℃, and the reaction times is 0.5 hour;
(4) solidify drying: reaction mixture is diverted in the polymerization digestor; React that mixed solution aggregates into solid after 15-20 minute, heat of polymerization makes the material seasoning in the polymerization process;
(5) pulverize: solid phase prod is ground into particle, gets product.
Among the preparation method of above-mentioned hydroscopic high-molecular resin, employed vinylformic acid is in the time of 20 ℃, and proportion is 1.051 gram per centimeters
3, boiling point is 141.3 ℃, flash-point is 54.5 ℃.
The preparation method of hydroscopic high-molecular resin water-resisting agent of the present invention has following advantage and beneficial effect:
1, on production technology process, once aggregate into product, it is dry to need not baking, the process of polymerization exotherm is exactly dry process, need not starch pasting, need not the processes such as washing, saponification, make the technological process of production shorten 5 times, can in 2 hours, produce finished product, reduce production costs, thereby solve the technical barrier that the production cycle is long, cost is high.Simultaneously, produce environmentally safe, safety and environmental protection in the production process without the three wastes (waste material, waste gas, waste water).
2, constant product quality, this object of invention SAP water-resisting agent runs into water and forms the gel product, its unique three-dimensional space network structure, water molecules is firmly held onto, and reaches waterproof, sealing and anti-leakage function.
Embodiment
Embodiment 1
The preparation method of the hydroscopic high-molecular resin water-resisting agent of present embodiment comprises following content:
(1) the preparation NaOH aqueous solution: be 93% NaOH229g with concentration, be dissolved in the 600g water;
(2) neutralization reaction: it is in 99.5% the vinylformic acid that the NaOH aqueous solution for preparing is joined 1500g purity continuously, employed vinylformic acid: 1.051 gram per centimeters when proportion is 20 ℃
3, boiling point is 141.3 ℃, flash-point is 54.5 ℃; Carry out neutralization reaction, the reaction times is 20 minutes; Then cool to 60 ℃;
(3) graft copolymerization: in the solution after the neutralization reaction, disposable adding 460g carboxymethyl cellulose stirs, rotating speed is 120r/min, add again the agent of 10g polyethylene glycol crosslinked, then add 5g hydrogen peroxide initiator, carry out graft copolymerization, the temperature in the reaction process is controlled at 115 ℃, and the reaction times is 0.5 hour;
(4) solidify drying: reaction mixture is diverted in the polymerization digestor, reacts that mixed solution aggregates into solid after 20 minutes, heat of polymerization makes the material seasoning in the polymerization process;
(5) pulverize: solid phase prod is ground into particle, gets product.
Embodiment 2
The preparation method of the hydroscopic high-molecular resin water-resisting agent of present embodiment comprises following content:
(1) the preparation NaOH aqueous solution: be 93% NaOH 229g with concentration, be dissolved in the 600g water;
(2) neutralization reaction: it is in 99.5% the vinylformic acid that the NaOH aqueous solution for preparing is joined 1500g purity continuously, employed vinylformic acid: 1.051 gram per centimeters when proportion is 20 ℃
3, boiling point is 141.3 ℃, flash-point is 54.5 ℃; Carry out neutralization reaction, the reaction times is 28 minutes; Then cool to 70 ℃;
(3) graft copolymerization: in the solution after the neutralization reaction, disposable adding 500g carboxymethyl cellulose stirs, rotating speed is 80r/min, add again the agent of 10g polyethylene glycol crosslinked, then add 5g hydrogen peroxide initiator, carry out graft copolymerization, the temperature in the reaction process is controlled at 90 ℃, and the reaction times is 0.5 hour;
(4) solidify drying: reaction mixture is diverted in the polymerization digestor; React that mixed solution aggregates into solid after 10 minutes, heat of polymerization makes the material seasoning in the polymerization process;
(5) pulverize: solid phase prod is ground into particle, gets product.
Embodiment 3
The preparation method of the hydroscopic high-molecular resin water-resisting agent of present embodiment comprises following content:
(1) the preparation NaOH aqueous solution: be 93% NaOH 229g with concentration, be dissolved in the 600g water;
(2) neutralization reaction: it is in 99.5% the vinylformic acid that the NaOH aqueous solution for preparing is joined 1500g purity continuously, employed vinylformic acid: 1.051 gram per centimeters when proportion is 20 ℃
3, boiling point is 141.3 ℃, flash-point is 54.5 ℃; Carry out neutralization reaction, the reaction times is 22 minutes; Then cool to 65 ℃;
(3) graft copolymerization: in the solution after the neutralization reaction, disposable adding 460g carboxymethyl cellulose stirs, rotating speed is 90r/min, add again the agent of 10g polyethylene glycol crosslinked, then add 5g hydrogen peroxide initiator, carry out graft copolymerization, the temperature in the reaction process is controlled at 80 ℃, and the reaction times is 0.5 hour;
(4) solidify drying: reaction mixture is diverted in the polymerization digestor; React that mixed solution aggregates into solid after 15 minutes, heat of polymerization makes the material seasoning in the polymerization process;
(5) pulverize: solid phase prod is ground into particle, gets product.
Embodiment 4
The preparation method of the hydroscopic high-molecular resin water-resisting agent of present embodiment comprises following content:
(1) the preparation NaOH aqueous solution: be 93% NaOH 229g with concentration, be dissolved in the 600g water;
(2) neutralization reaction: the NaOH aqueous solution for preparing is joined 1500g purity continuously greater than in 99.5% the vinylformic acid, employed vinylformic acid: 1.051 gram per centimeters when proportion is 20 ℃
3, boiling point is 141.3 ℃, flash-point is 54.5 ℃; Carry out neutralization reaction, the reaction times is 28 minutes; Then cool to 67 ℃;
(3) graft copolymerization: in the solution after the neutralization reaction, disposable adding 500g carboxymethyl cellulose stirs, rotating speed is 110r/min, add again the agent of 10g polyethylene glycol crosslinked, then add 5g hydrogen peroxide initiator, carry out graft copolymerization, the temperature in the reaction process is controlled at 110 ℃, and the reaction times is 0.5 hour;
(4) solidify drying: reaction mixture is diverted in the polymerization digestor; React that mixed solution aggregates into solid after 20 minutes, heat of polymerization makes the material seasoning in the polymerization process;
(5) pulverize: solid phase prod is ground into particle, gets product.
The above only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment does, still belongs to the protection domain of technical solution of the present invention according to technical spirit of the present invention.
Claims (2)
1. the preparation method of a hydroscopic high-molecular resin water-resisting agent comprises the following steps:
(1) the preparation NaOH aqueous solution: be 93% NaOH 229g with concentration, be dissolved in the 600g water;
(2) neutralization reaction: the NaOH aqueous solution for preparing is joined 1500g purity continuously greater than in 99.5% the vinylformic acid, and vinylformic acid proportion in the time of 20 ℃ is 1.051 gram per centimeters
3, boiling point is 141.3 ℃, and flash-point is 54.5 ℃, carries out neutralization reaction, and the reaction times is 22-28 minute, then cools to 60-70 ℃;
(3) graft copolymerization: in the solution after the neutralization reaction, disposable adding 460-500g carboxymethyl cellulose stirs, rotating speed is 80-120r/min, add again the agent of 10g polyethylene glycol crosslinked, then add 5g hydrogen peroxide initiator, carry out graft copolymerization, the temperature in the reaction process is controlled at 90 ℃-115 ℃, and the reaction times is 0.5 hour;
(4) solidify drying: reaction mixture is diverted in the polymerization digestor, reacts that mixed solution aggregates into solid after 10-20 minute, heat of polymerization makes the material seasoning in the polymerization process;
(5) pulverize: solid phase prod is ground into particle, gets product.
2. preparation method according to claim 1 is characterized in that, comprises the following steps:
(1) the preparation NaOH aqueous solution: be 93% NaOH 229g with concentration, be dissolved in the 600g water;
(2) neutralization reaction: the NaOH aqueous solution for preparing is joined 1500g purity continuously greater than in 99.5% the vinylformic acid, and vinylformic acid proportion in the time of 20 ℃ is 1.051 gram per centimeters
3, boiling point is 141.3 ℃, and flash-point is 54.5 ℃, carries out neutralization reaction, and the reaction times is 20 minutes; Then cool to 60-70 ℃;
(3) graft copolymerization: in the solution after the neutralization reaction, disposable adding 500g carboxymethyl cellulose stirs, rotating speed is 90-110r/min, add again the agent of 10g polyethylene glycol crosslinked, then add 5g hydrogen peroxide initiator, carry out graft copolymerization, the temperature in the reaction process is controlled at 80 ℃-110 ℃, and the reaction times is 0.5 hour;
(4) solidify drying: reaction mixture is diverted in the polymerization digestor; React that mixed solution aggregates into solid after 15-20 minute, heat of polymerization makes the material seasoning in the polymerization process;
(5) pulverize: solid phase prod is ground into particle, gets product.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104087303A (en) * | 2014-06-20 | 2014-10-08 | 辽宁山水城市园林景观有限公司 | High-efficiency environmental-protection type water-retaining agent for garden greening and preparation method thereof |
| CN106832130A (en) * | 2016-12-12 | 2017-06-13 | 长安大学 | A kind of high tenacity cracking resistance cement concrete and preparation method thereof |
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- 2012-09-10 CN CN 201210330112 patent/CN103044625A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104087303A (en) * | 2014-06-20 | 2014-10-08 | 辽宁山水城市园林景观有限公司 | High-efficiency environmental-protection type water-retaining agent for garden greening and preparation method thereof |
| CN106832130A (en) * | 2016-12-12 | 2017-06-13 | 长安大学 | A kind of high tenacity cracking resistance cement concrete and preparation method thereof |
| CN106832130B (en) * | 2016-12-12 | 2019-11-08 | 长安大学 | A kind of high tenacity cracking resistance cement concrete and preparation method thereof |
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Application publication date: 20130417 |