CN104926195A - High-performance waterproof agent and preparing method thereof - Google Patents
High-performance waterproof agent and preparing method thereof Download PDFInfo
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- CN104926195A CN104926195A CN201510416266.9A CN201510416266A CN104926195A CN 104926195 A CN104926195 A CN 104926195A CN 201510416266 A CN201510416266 A CN 201510416266A CN 104926195 A CN104926195 A CN 104926195A
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Abstract
The invention discloses a high-performance waterproof agent and a preparing method thereof. The waterproof agent is made from, by weight, 2-8 parts of trichloromethylsilane, 3-7 parts of sodium hydroxide, 5-10 parts of sodium acetate, 4-9 parts of polyving akohol, 0.2-0.5 part of methylcellulose, 10-20 parts of sodium silicate, 3-8 parts of ferric chloride, and 200-300 parts of water. The method comprises the steps of weighing all the materials according to the weight proportion accurately, and mixing and stirring trichloromethylsilane, sodium hydroxide, sodium acetate and half the water to obtain a solution A; adding polyving akohol and methylcellulose to the rest of water, heating the mixture to 80-90 DEG C, adding the solution A while stirring, and obtaining a solution B after sufficient dissolution; adding sodium silicate and ferric chloride to the solution B in sequence, continuing to stir the mixture to an even state, and cooling the mixture to indoor temperature. The waterproof agent is low in alkalinity and high in waterproof performance.
Description
Technical field
The present invention relates to a kind of high performance water proof agent and preparation method thereof, belong to concrete construction water-proof material technical field.
Background technology
Water-resisting agent mainly by reducing hole and blocking capillary channel, reducing water-absorbent and water-permeable under hydrostaticpressure, realizing improving concrete impervious water-repellancy and weather resistance.In recent years, domestic concrete waterproofer main direction of studying has inorganic silicon water-resisting agent, waterproofing agent of organosilicon and inorganic silicon-organosilicon composite water-proof agent.Inorganic silicon water-resisting agent mainly reduces concrete hollow gap by inorganic silicon compound (as inorganic silicate), improves density and impermeability.Waterproofing agent of organosilicon mainly makes concrete surface form hydrophobic surface by silicoorganic compound (as methyl silicon sodium alcoholate), improves impervious.But inorganic silicon-organosilicon composite water-proof agent had both possessed inorganic silicon water-resisting agent and has reduced space, improves the function of waterproof, and combining again the function of waterproofing agent of organosilicon hydrophobic surface waterproof, is a kind of multi-functional water-resisting agent.
Inorganic silicic acid salt water-repellent mainly refers to the water-resisting agent of composition based on water glass or potassium silicate.Be main component as Chinese patent CN 101811841 B document discloses a kind of with water glass, and with the water resistance realizing raising water-resisting agent be target inorganic water-proof agent and method for making thereof.But its waterproof membrane insufficient strength formed, easily ftractures.In order to solve the such technical problem of inorganic silicic acid salt water-repellent, people also studied waterproofing agent of organosilicon.Waterproofing agent of organosilicon mainly refers to that methyl silanol or methyl silicon sodium alcoholate are the water-resisting agent of main component.Methyl silicon sodium alcoholate is the raw material that synthesis has the poly-methyl silicon ether of water resistance, thus can form one deck polysiloxane film at concrete surface and have water-proof function.As Chinese patent CN1218081 A document discloses a kind of Research on silicone waterproof agent for instruction containing sodium methyl silicate 3.0-4.0%, Tai-Ace S 150 0.0-0.06% and water 96-97%.Although it has the function of certain waterproof, there is that alkalescence is comparatively large, emulsion instability problem.Alkalescence is comparatively large, and easy absorbing carbon dioxide, decreases the formation of methyl siliconic acid, thus decreases poly-methyl silicon ether, and then reduces water resistance.Emulsion is unstable, is easily broken through waterproof layer by water and affects water resistance.In order to solve the problem of waterproofing agent of organosilicon, people start the research attempting other silicoorganic compound.As Chinese patent CN 1778860 A document discloses a kind of containing monomethyl trichlorosilane 0.1-2 part, sodium hydroxide 2-6 part, high-effect water-proof agent of water 3-7 part and preparation method thereof.Although the water resistance of waterproofing agent of organosilicon has had certain improvement, comparatively large, that emulsion the is unstable problem of organosilicon alkalescence has not still been resolved.
That studies water-resisting agent along with people gos deep into, and people start to study the carrying out of inorganic silicon and organosilicon composite water-proof agent.Inorganic silicon-organosilicon composite water-proof agent not only has polymer emulsion, and also has film forming subsidiary material cement.Cement can carry out hydration reaction with the water in liquid material, forms inorganic silicon-organosilicon composite membrane, so inorganic silicon-organosilicon composite water-proof agent has good water resistance.Therefore, it is little by little widely applied to the waterproof of construction floor, toilet, vault etc.At present, someone reports the situation about inorganic silicon-organosilicon composite water-proof agent already, as Chinese patent CN 102557726 B document discloses the water-resisting agent of a kind of " a kind of high-permeability multi-effect concrete water-proofing agent and preparation method thereof " by name, this water-resisting agent has excellent penetrating power, maximum depth of penetration reaches 30mm, greatly improve waterproofing layer thickness, and can also construction cost be saved.But this water-resisting agent is water white transparency alkaline mixed solution, its pH value is 10 ~ 12, and the alkalescence of water-resisting agent is comparatively large, and easily alkali-aggregate reaction corroded steel reinforcement occurs, affect the life-span of concrete endurance quality and building, this constitutes very large hidden danger to the safety of building.In addition, concrete surrounding environment is again often complicated and changeable, and this proposes higher demand for development to the water-proof function of inorganic silicon-organosilicon composite water-proof agent undoubtedly.Therefore, develop a kind of high performance water proof agent and very important effect is played to concrete construction.
Summary of the invention
For above-mentioned the deficiencies in the prior art, technical problem to be solved by this invention proposes the low and high performance water proof agent that water resistance is good and preparation method thereof of a kind of alkalescence.
The present invention for the taked technical scheme that solves the problem is:
A kind of high performance water proof agent, is made up of each component of following weight: monomethyl trichlorosilane 2 ~ 8 parts, 3 ~ 7 parts, sodium hydroxide, sodium-acetate 5 ~ 10 parts, polyvinyl alcohol 4 ~ 9 parts, methylcellulose gum 0.2 ~ 0.5 part, water glass 10 ~ 20 parts, 3 ~ 8 parts, iron(ic) chloride, 200 ~ 300 parts, water.
Its weight is as follows:
Monomethyl trichlorosilane 5 parts, 5 parts, sodium hydroxide, sodium-acetate 8 parts, polyvinyl alcohol 7 parts, methylcellulose gum 0.35 part, water glass 15 parts, 6 parts, iron(ic) chloride, 250 parts, water.
In the present invention, described monomethyl trichlorosilane can react with sodium-acetate and generate methyl triacetoxysilane; Methyl silicon resin is generated with water generation hydrolysis reaction; React with sodium hydroxide and generate sodium methyl silicate.Methyl triacetoxysilane and methyl silicon resin can penetrate into inside concrete and generate water-fast gelinite, blocking inside concrete space, closes capillary channel, increases degree of compactness, form reliable permanent water-resistant layer, concrete work-ing life can be extended; Sodium methyl silicate is a kind of good waterproof antifreezing agent, has hydrophobicity, the intrusion of anti-sealing, thus makes concrete avoid breaking.In addition, these compounds each other and complicated physical-chemical reaction all can occur between hydrolysis product of cement, improve early age strength of concrete, and improve concrete performance.
Polyvinyl alcohol has good dispersiveness and cohesiveness, can improve concrete intensity, reduces concrete cracking.
Methylcellulose gum has good wettability, dispersiveness, cementability, thickening property, emulsifying property, water-retentivity and film-forming properties, can improve the care action of concrete self, reduces concrete lack of water cracking, thus improves concrete impervious water-proof function.
Water glass, iron(ic) chloride are inorganic waterproof materials, and when mixing concrete, water glass with the hydrated product calcium hydroxide reaction produced during concrete hydrating, can form C-S-H (xCaOSiO
2yH
2o) gel, blocking and closed capillary channel, improve concrete impervious water-proof function.In general, organosilicate and concrete are all aobvious alkalescence, and in such a situa-tion, iron ion both can be combined into ferric hydroxide colloid with hydroxide ion to iron(ic) chloride, hydrolysis reaction self also can occur simultaneously and generate ferric hydroxide colloid.But ferric hydroxide colloid has very strong adsorptivity, the cracking that concrete strength causes not can be reduced.Therefore, iron(ic) chloride not only improves concrete water-repellancy, and reduces concrete alkalescence, and certain basis has been established in the practical application for high performance water proof agent.
The preparation method of described high performance water proof agent, comprises the steps:
(1) weigh by each ingredients weight parts proportion speed, by the monomethyl trichlorosilane weighed up, sodium hydroxide and sodium-acetate join in the water of half and stir, and stirring velocity is 300 ~ 450r/min, and churning time is 20 ~ 25min, obtains solution A;
(2) polyvinyl alcohol and methylcellulose gum are joined in second half water, be heated to 80 ~ 90 DEG C, under whipped state, add solution A, continue to be heated to 80 ~ 90 DEG C, after treating all fully to dissolve, stop heating, obtain solution B;
(3) in solution B, add water glass and iron(ic) chloride successively continue to be stirred to evenly, treat that temperature naturally cools to room temperature, stop stirring, high performance water proof agent can be obtained.
During product practical application of the present invention, spraying method or spread coating can be adopted to construct.
The invention has the beneficial effects as follows:
Water-resisting agent disclosed in this invention has three kinds of gelinite waterproof layers: silicon gel waterproof layer, inorganic silica gels waterproof layer, ferric hydroxide colloid waterproof layer, greatly increase concrete water resistance; Iron ion can be combined into ferric hydroxide colloid with hydroxide ion simultaneously, effectively reduces concrete alkalescence (pH value is 8.0 ~ 9.0), extends concrete work-ing life.Therefore, water-resisting agent of the present invention can be applicable to the waterproof of roofing, vault and toilet etc.
Embodiment
Embodiment 1
A kind of high performance water proof agent, it is made up of each component of following weight: monomethyl trichlorosilane 5 parts, 5 parts, sodium hydroxide, sodium-acetate 8 parts, polyvinyl alcohol 7 parts, methylcellulose gum 0.35 part, water glass 15 parts, 6 parts, iron(ic) chloride, 250 parts, water.
The preparation process of described high performance water proof agent is:
(1) weigh by each ingredients weight parts proportion speed, by the monomethyl trichlorosilane weighed up, sodium hydroxide and sodium-acetate join in the water of half and stir, and stirring velocity is 375r/min, and churning time is 23min, obtains solution A;
(2) polyvinyl alcohol and methylcellulose gum are joined in second half water, be heated to 85 DEG C, under whipped state, add solution A, continue to be heated to 85 DEG C, after treating all fully to dissolve, stop heating, obtain solution B;
(3) in solution B, add water glass and iron(ic) chloride successively continue to be stirred to evenly, treat that temperature naturally cools to room temperature, stop stirring, high performance water proof agent can be obtained.The pH value of this high performance water proof agent is 8.5.
Embodiment 2
A kind of high performance water proof agent, it is made up of each component of following weight: monomethyl trichlorosilane 2 parts, 3 parts, sodium hydroxide, sodium-acetate 5 parts, polyvinyl alcohol 9 parts, methylcellulose gum 0.5 part, water glass 20 parts, 8 parts, iron(ic) chloride, 300 parts, water.
The preparation process of described high performance water proof agent is:
(1) weigh by each ingredients weight parts proportion speed, by the monomethyl trichlorosilane weighed up, sodium hydroxide and sodium-acetate join in the water of half and stir, and stirring velocity is 450r/min, and churning time is 20min, obtains solution A;
(2) polyvinyl alcohol and methylcellulose gum are joined in second half water, be heated to 80 DEG C, under whipped state, add solution A, continue to be heated to 80 DEG C, after treating all fully to dissolve, stop heating, obtain solution B;
(3) in solution B, add water glass and iron(ic) chloride successively continue to be stirred to evenly, treat that temperature naturally cools to room temperature, stop stirring, high performance water proof agent can be obtained.The pH value of this high performance water proof agent is 8.0.
Embodiment 3
A kind of high performance water proof agent, it is made up of each component of following weight: monomethyl trichlorosilane 8 parts, 7 parts, sodium hydroxide, sodium-acetate 10 parts, polyvinyl alcohol 4 parts, methylcellulose gum 0.2 part, water glass 10 parts, 3 parts, iron(ic) chloride, 200 parts, water.
The preparation process of described high performance water proof agent is:
(1) weigh by each ingredients weight parts proportion speed, by the monomethyl trichlorosilane weighed up, sodium hydroxide and sodium-acetate join in the water of half and stir, and stirring velocity is 300r/min, and churning time is 25min, obtains solution A;
(2) polyvinyl alcohol and methylcellulose gum are joined in second half water, be heated to 90 DEG C, under whipped state, add solution A, continue to be heated to 90 DEG C, after treating all fully to dissolve, stop heating, obtain solution B;
(3) in solution B, add water glass and iron(ic) chloride successively continue to be stirred to evenly, treat that temperature naturally cools to room temperature, stop stirring, high performance water proof agent can be obtained.The pH value of this high performance water proof agent is 9.0.
Embodiment 4
A kind of high performance water proof agent, it is made up of each component of following weight: monomethyl trichlorosilane 4 parts, 4 parts, sodium hydroxide, sodium-acetate 7 parts, polyvinyl alcohol 6 parts, methylcellulose gum 0.3 part, water glass 12 parts, 5 parts, iron(ic) chloride, 225 parts, water.
The preparation process of described high performance water proof agent is:
(1) weigh by each ingredients weight parts proportion speed, by the monomethyl trichlorosilane weighed up, sodium hydroxide and sodium-acetate join in the water of half and stir, and stirring velocity is 350r/min, and churning time is 24min, obtains solution A;
(2) polyvinyl alcohol and methylcellulose gum are joined in second half water, be heated to 83 DEG C, under whipped state, add solution A, continue to be heated to 83 DEG C, after treating all fully to dissolve, stop heating, obtain solution B;
(3) in solution B, add water glass and iron(ic) chloride successively continue to be stirred to evenly, treat that temperature naturally cools to room temperature, stop stirring, high performance water proof agent can be obtained.The pH value of this high performance water proof agent is 8.3.
Embodiment 5
A kind of high performance water proof agent, it is made up of each component of following weight: monomethyl trichlorosilane 7 parts, 6 parts, sodium hydroxide, sodium-acetate 9 parts, polyvinyl alcohol 8 parts, methylcellulose gum 0.4 part, water glass 18 parts, 7 parts, iron(ic) chloride, 275 parts, water.
The preparation process of described high performance water proof agent is:
(1) weigh by each ingredients weight parts proportion speed, by the monomethyl trichlorosilane weighed up, sodium hydroxide and sodium-acetate join in the water of half and stir, and stirring velocity is 400r/min, and churning time is 22min, obtains solution A;
(2) polyvinyl alcohol and methylcellulose gum are joined in second half water, be heated to 87 DEG C, under whipped state, add solution A, continue to be heated to 87 DEG C, after treating all fully to dissolve, stop heating, obtain solution B;
(3) in solution B, add water glass and iron(ic) chloride successively continue to be stirred to evenly, treat that temperature naturally cools to room temperature, stop stirring, high performance water proof agent can be obtained.The pH value of this high performance water proof agent is 8.7.
We test the pH value of high performance water proof agent, time of coagulation, ultimate compression strength, folding strength, the performance such as permeable pressure and absorbed dose, and result is as shown in table 1.
The performance test results of table 1 high performance water proof agent
Certainly, just the preferred embodiments of the disclosure is described in detail above, not limits practical range of the present invention with this, and all equivalence changes done according to principle of the present invention, structure and structure, all should be covered by protection scope of the present invention.
Claims (3)
1. a high performance water proof agent, it is characterized in that: it is made up of each component of following weight: monomethyl trichlorosilane 2 ~ 8 parts, 3 ~ 7 parts, sodium hydroxide, sodium-acetate 5 ~ 10 parts, polyvinyl alcohol 4 ~ 9 parts, methylcellulose gum 0.2 ~ 0.5 part, water glass 10 ~ 20 parts, 3 ~ 8 parts, iron(ic) chloride, 200 ~ 300 parts, water.
2. high performance water proof agent according to claim 1, is characterized in that: its weight is as follows: monomethyl trichlorosilane 5 parts, 5 parts, sodium hydroxide, sodium-acetate 8 parts, polyvinyl alcohol 7 parts, methylcellulose gum 0.35 part, water glass 15 parts, 6 parts, iron(ic) chloride, 250 parts, water.
3. the preparation method of a kind of high performance water proof agent according to claim 1, is characterized in that: comprise the steps:
(1) weigh by each ingredients weight parts proportion speed, by the monomethyl trichlorosilane weighed up, sodium hydroxide and sodium-acetate join in the water of half and stir, and stirring velocity is 300 ~ 450r/min, and churning time is 20 ~ 25min, obtains solution A;
(2) polyvinyl alcohol and methylcellulose gum are joined in second half water, be heated to 80 ~ 90 DEG C, under whipped state, add solution A, continue to be heated to 80 ~ 90 DEG C, after treating all fully to dissolve, stop heating, obtain solution B;
(3) in solution B, add water glass and iron(ic) chloride successively continue to be stirred to evenly, treat that temperature naturally cools to room temperature, stop stirring, high performance water proof agent can be obtained.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107984833A (en) * | 2017-11-27 | 2018-05-04 | 桂林市和鑫防水装饰材料有限公司 | A kind of heat-resisting EPDM rubber rolling material |
| KR20210014098A (en) * | 2018-06-04 | 2021-02-08 | 위원 장 | Concrete waterproofing anticorrosive |
| CN114806398A (en) * | 2022-04-01 | 2022-07-29 | 北京华夏先河新材料有限公司 | Protective agent for improving self-protection capability of active cement concrete and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103952075A (en) * | 2014-05-20 | 2014-07-30 | 陆玉珍 | Hydrophobic waterproof coating for building |
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- 2015-07-15 CN CN201510416266.9A patent/CN104926195A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103952075A (en) * | 2014-05-20 | 2014-07-30 | 陆玉珍 | Hydrophobic waterproof coating for building |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107984833A (en) * | 2017-11-27 | 2018-05-04 | 桂林市和鑫防水装饰材料有限公司 | A kind of heat-resisting EPDM rubber rolling material |
| KR20210014098A (en) * | 2018-06-04 | 2021-02-08 | 위원 장 | Concrete waterproofing anticorrosive |
| EP3725752A4 (en) * | 2018-06-04 | 2021-05-05 | Yuwen Zhang | Concrete waterproofing agent |
| JP2021528345A (en) * | 2018-06-04 | 2021-10-21 | 張郁文 | Concrete water repellent |
| KR102584419B1 (en) | 2018-06-04 | 2023-09-27 | 위원 장 | Concrete waterproofing anti-corrosion agent |
| CN114806398A (en) * | 2022-04-01 | 2022-07-29 | 北京华夏先河新材料有限公司 | Protective agent for improving self-protection capability of active cement concrete and preparation method thereof |
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Application publication date: 20150923 |