CN115873435A - Polymer cement waterproof coating and preparation process thereof - Google Patents
Polymer cement waterproof coating and preparation process thereof Download PDFInfo
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- CN115873435A CN115873435A CN202211611676.5A CN202211611676A CN115873435A CN 115873435 A CN115873435 A CN 115873435A CN 202211611676 A CN202211611676 A CN 202211611676A CN 115873435 A CN115873435 A CN 115873435A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention provides a polymer cement waterproof coating and a preparation process thereof, wherein the waterproof coating comprises a component A and a component B; the component B comprises an auxiliary agent for slowly releasing moisture; the component A comprises styrene-butadiene latex, modified paraffin emulsion, acrylic emulsion, water, sodium diisooctyl succinate and a defoaming agent. The component B also comprises cement, quartz sand, heavy calcium carbonate and a melamine water reducing agent. The polymer cement waterproof coating has good water resistance, can be well compounded with a wet-laid coiled material, and cannot cause bubbling and falling of the coiled material. Effectively overcomes the defect that the polymer cement waterproof coating can not be constructed with a wet-laid coiled material in a composite way.
Description
Technical Field
The invention relates to the field of building waterproof coatings, in particular to a polymer cement waterproof coating and a preparation process thereof.
Background
The general building and municipal engineering waterproof standard puts forward higher requirements on the durability of materials from the aspects of defining and improving the working life of the waterproof design of the engineering. The coating and rolling composite waterproof method can ensure that the waterproof layer is fully bonded with the base surface and the thickness of the waterproof layer, greatly improves the reliability of waterproof engineering, and is valued by researchers in the industry.
The polymer cement waterproof coating is a water-based waterproof coating, is green and environment-friendly, has high cost performance, can be sprayed or roll-coated for construction, is convenient to construct, has high efficiency and wide application, and is the waterproof coating which accounts for the largest proportion in the current waterproof industry.
The construction of the wet-laid waterproof roll does not use open fire, has low requirements on a basic layer, and can save the construction period most effectively, so that the wet-laid waterproof roll is widely applied.
If the existing polymer cement waterproof coating and the wet-laid waterproof coiled material are constructed by adopting a coating and rolling composite waterproof method, the problems that the coiled material and the coating cannot be bonded after the wet-laid waterproof coiled material is constructed, the coating is not dry after the construction, and the wet-laid coiled material bubbles, delaminates and even falls off exist.
If the existing polymer cement waterproof coating and wet-laid waterproof coiled material are constructed by adopting a coating and rolling composite waterproof method, the wet-laid waterproof coiled material is covered on the surface of the coating, and except that a small part of water participates in cement hydration reaction, the water in the polymer cement waterproof coating volatilizes in the film forming process, so that the wet-laid coiled material is bubbled, delaminated and even falls off. Meanwhile, after the polymer cement waterproof coating is covered by the wet-laid coiled material, moisture in the coating cannot be quickly dispersed, and the phenomenon of no drying is easy to occur.
The inventor team of the company is hard to explore, the technical problems are solved, and key technical indexes of the quality of the waterproof engineering are improved.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a polymer cement waterproof coating and a preparation process thereof, and the following aims are achieved: the polymer cement waterproof coating has good water resistance, can be well compounded with a wet-laid coiled material, and cannot cause bubbling and falling of the coiled material.
In order to realize the purpose, the technical scheme is as follows:
a polymer cement waterproof coating comprises a component A and a component B; the component B comprises an auxiliary agent for slowly releasing moisture; the component A comprises styrene-butadiene latex, modified paraffin emulsion, acrylic emulsion, water, sodium diisooctyl succinate and a defoaming agent.
The component B also comprises cement, quartz sand, heavy calcium carbonate and a melamine water reducing agent.
The component A comprises the following raw materials in parts by weight: 85-90 parts of styrene-butadiene latex, 1-1.5 parts of modified paraffin emulsion, 5-8 parts of acrylic emulsion, 2-5 parts of water, 0.4-0.5 part of sodium diisooctyl succinate and 0.2-0.4 part of defoaming agent.
The component B comprises the following raw materials in parts by weight: 0.5 to 0.8 part of HS auxiliary agent, 40 to 45 parts of cement, 40 to 45 parts of quartz sand, 10 to 20 parts of triple superphosphate and 0.5 to 0.8 part of melamine water reducing agent.
The auxiliary agent for slow release of water: the raw material components comprise the following components in parts by weight: 20 plus or minus 2 parts of hydroxypropyl methylcellulose, 10 plus or minus 1 part of sodium hydroxymethyl cellulose, 300 plus or minus 10 parts of sodium hydroxide solution and 30 plus or minus 2 parts of N-isopropyl acrylamide.
The preparation process of the auxiliary agent for slowly releasing the water comprises the following steps: and (3) fully dissolving hydroxypropyl methylcellulose and sodium hydroxymethyl cellulose in a sodium hydroxide solution to obtain a mixed solution. Adding N-isopropyl acrylamide into the mixed solution, and uniformly mixing the N-isopropyl acrylamide and the mixed solution by ultrasonic oscillation to obtain a jelly; the gum was then dry ground to 85 mesh.
The quartz sand: the fineness is 80 to 120 meshes; the heavy calcium: the fineness is 200 meshes.
The acrylic emulsion comprises: the particle size is 30nm.
The auxiliary agent for slow release of water: the raw material components comprise the following components in parts by weight: 20 parts of hydroxypropyl methylcellulose, 10 parts of sodium hydroxymethyl cellulose, 300 parts of sodium hydroxide solution with the mass percentage concentration of 1%, and 30 parts of N-isopropyl acrylamide.
When in use, the component A and the component B are mixed according to the ratio of 2:3, and uniformly stirring. The impermeability of the waterproof coating is 1.1-1.4 MPa, the peel strength of the sealing dry-solid and wet-laid coiled material is 3.5-3.8N/mm, and the peel strength of the waterproof coating after the wet-laid coiled material is soaked in water is 3.0-3.5N/mm.
The preparation method of the polymer cement waterproof coating comprises the steps of preparing an HS (high-speed) auxiliary agent, preparing a component A and preparing a component B; the preparation of the HS auxiliary agent comprises the following steps: and (3) sufficiently dissolving hydroxypropyl methylcellulose and sodium hydroxymethyl cellulose in a sodium hydroxide solution to obtain a mixed solution A. And then adding the N-isopropyl acrylamide into the mixed solution A, and fully oscillating and uniformly mixing by using ultrasonic waves to obtain a jelly. The gum was then dried and ground to 85 mesh to give the HS adjuvant.
The invention has the following beneficial effects:
(1) The invention provides the polymer cement waterproof coating capable of being effectively bonded with the wet-laid waterproof coiled material, which is constructed in a composite way with the wet-laid coiled material, does not foam, delaminate or fall off, overcomes the defect that the polymer cement waterproof coating cannot be constructed in a composite way with the wet-laid coiled material, develops a new application method of the polymer cement waterproof coating, and improves the application value and market value of the polymer cement waterproof coating.
(2) The waterproof coating has good construction performance; the coating has long opening time, good viscosity and good fitting degree with the coiled material, and effectively solves the problem of preventing the vertical face of the coiled material from falling off or the abnormal part from warping.
(3) The waterproof coating has a self-layering function, and the small-particle-size emulsion can permeate into the base layer, so that the adhesion between the coating and the base surface is improved. And meanwhile, the coating has excellent water resistance.
(4) According to the invention, by adding the specific auxiliary agent for slowly releasing the moisture and matching with the proper aggregate ratio and cement proportion, the physical performance is ensured, the moisture in the paint is absorbed and stored, the moisture is slowly released in the later period for the hydration reaction of the cement, and the moisture is prevented from being greatly volatilized in a short time. The waterproof coating disclosed by the invention can be well adhered to a wet-laid coiled material on the basis of excellent waterproof effect. After construction, the wet-laid coiled material does not foam, delaminate or fall off. The phenomenon of drying can not occur.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Example 1 Polymer cement waterproof coating and preparation Process thereof
The preparation process of the polymer cement waterproof coating comprises the following steps:
step 1, preparing HS auxiliary agent
An auxiliary agent for slowly releasing water (hereinafter referred to as HS auxiliary agent): the raw material components comprise the following components in parts by weight: 20 parts of hydroxypropyl methylcellulose, 10 parts of sodium hydroxymethyl cellulose, 300 parts of sodium hydroxide solution and 30 parts of N-isopropyl acrylamide.
The hydroxypropyl methyl cellulose: is hydroxypropyl methylcellulose with 3 ten thousand viscosity;
the sodium hydroxide solution: the mass percentage concentration is 1%.
And (3) sufficiently dissolving hydroxypropyl methylcellulose and sodium hydroxymethyl cellulose in a sodium hydroxide solution to obtain a mixed solution A. And then adding the N-isopropyl acrylamide into the mixed solution A, and fully oscillating and uniformly mixing by using ultrasonic waves to obtain a jelly. The gum was then dried and ground to 85 mesh to give the HS adjuvant.
Step 2, preparing the component A
The component A comprises the following raw materials in parts by weight: 90 parts of styrene-butadiene latex, 1 part of modified paraffin emulsion, 5 parts of acrylic emulsion, 2 parts of water, 0.4 part of sodium diisooctyl succinate and 0.4 part of defoaming agent.
The modified paraffin emulsion comprises the following components: model CT3360, available from Keohal (Shanghai) chemical Co., ltd;
the acrylic emulsion comprises the following components: particle size 30nm, model PR3500, purchased from Xinte Ma Chemicals GmbH;
the defoaming agent comprises the following components: is a mineral oil defoamer.
Mixing styrene-butadiene latex, modified paraffin emulsion, acrylic emulsion, water, sodium diisooctyl succinate and a defoaming agent to prepare the component A.
Step 3, preparing the component B
The component B comprises the following raw materials in parts by weight: 0.5 part of HS auxiliary agent, 40 parts of cement, 45 parts of quartz sand, 15 parts of heavy calcium carbonate and 0.5 part of melamine water reducing agent.
The quartz sand: the fineness is 80 meshes;
the heavy calcium: the fineness is 200 meshes.
And uniformly mixing the HS auxiliary agent, the cement, the quartz sand, the triple superphosphate and the melamine water reducing agent to prepare the component B.
And 4, when in use, mixing the component A and the component B according to the ratio of 2:3, and uniformly stirring.
Example 2 Polymer cement waterproof coating and preparation technology thereof
The preparation process of the polymer cement waterproof coating comprises the following steps:
step 1, preparing HS auxiliary agent
An auxiliary agent for slowly releasing water (hereinafter referred to as HS auxiliary agent): the raw material components comprise the following components in parts by weight: 20 parts of hydroxypropyl methylcellulose, 10 parts of sodium hydroxymethyl cellulose, 300 parts of sodium hydroxide solution and 30 parts of N-isopropyl acrylamide.
And (3) sufficiently dissolving hydroxypropyl methylcellulose and sodium hydroxymethyl cellulose in a sodium hydroxide solution to obtain a mixed solution A. And then adding the N-isopropyl acrylamide into the mixed solution A, and fully oscillating and uniformly mixing by using ultrasonic waves to obtain a jelly. The gum was then dried and ground to 80 mesh to give the HS adjuvant.
Step 2, preparing the component A
The component A comprises the following raw materials in parts by weight: 90 parts of styrene-butadiene latex, 1 part of modified paraffin emulsion, 5 parts of acrylic emulsion, 2 parts of water, 0.4 part of sodium diisooctyl succinate and 0.4 part of defoaming agent.
The modified paraffin emulsion comprises the following components: model CT3360, available from Keohal (Shanghai) chemical Co., ltd;
the acrylic emulsion comprises: particle size 30nm, model PR3500, purchased from Xinte Ma Chemicals GmbH;
the defoaming agent comprises the following components: is a silicone defoaming agent.
Mixing styrene-butadiene latex, modified paraffin emulsion, acrylic emulsion, water, sodium diisooctyl succinate and a defoaming agent to prepare the component A.
Step 3, preparing the component B
The component B comprises the following raw materials in parts by weight: 0.8 part of HS auxiliary agent, 40 parts of cement, 45 parts of quartz sand, 15 parts of heavy calcium carbonate and 0.5 part of melamine water reducing agent.
The quartz sand: the fineness is 80 meshes;
the heavy calcium carbonate: the fineness is 200 meshes.
And uniformly mixing the HS auxiliary agent, cement, quartz sand, heavy calcium carbonate and a melamine water reducing agent to prepare the component B.
And 4, when in use, mixing the component A and the component B according to the ratio of 2:3, and stirring uniformly.
Example 3 Polymer cement waterproof coating and preparation Process thereof
The preparation process of the polymer cement waterproof coating comprises the following steps:
step 1, preparing HS auxiliary agent
An aid for slow release of water (hereinafter referred to as HS aid): 20g of hydroxypropyl methylcellulose with 3 ten thousand of viscosity and 10g of sodium hydroxymethyl cellulose are fully dissolved in 1 percent sodium hydroxide solution with the mass fraction of 300 g. And then adding 30 parts of N-isopropyl acrylamide into the solution, fully oscillating and uniformly mixing by using ultrasonic waves to obtain a jelly, and then drying and grinding the jelly to more than 80 meshes to obtain the HS auxiliary agent.
Step 2, preparing the component A
The component A comprises the following raw materials in parts by weight: 85 parts of styrene-butadiene latex, 1.5 parts of modified paraffin emulsion, 8 parts of acrylic emulsion, 2 parts of water, 0.5 part of sodium diisooctyl succinate and 0.2 part of defoaming agent.
The modified paraffin emulsion comprises the following components: model CT3360, available from Keohal (Shanghai) chemical Co., ltd;
the acrylic emulsion comprises: particle size 30nm, model PR3500, purchased from Xinte Ma Chemicals GmbH;
the defoaming agent comprises the following components: a polyether defoamer.
Mixing styrene-butadiene latex, modified paraffin emulsion, acrylic emulsion, water, sodium diisooctyl succinate and a defoaming agent to prepare the component A.
Step 3, preparing the component B
The component B comprises the following raw materials in parts by weight: 0.5 part of HS auxiliary agent, 45 parts of cement, 40 parts of quartz sand, 15 parts of triple superphosphate and 0.8 part of melamine water reducing agent.
The quartz sand: the fineness is 80 meshes;
the heavy calcium carbonate: the fineness is 200 meshes.
And uniformly mixing the HS auxiliary agent, cement, quartz sand, heavy calcium carbonate and a melamine water reducing agent to prepare the component B.
Step 4, when in use, the component A and the component B are mixed according to the ratio of 2:3, and uniformly stirring.
The performance indexes of the polymer cement waterproof coatings prepared in examples 1 to 3 were measured:
detecting the tensile strength, the elongation at break, the impermeability and the bonding strength of untreated, moist base surfaces and immersion treatment according to GB/T23445-2009 Polymer Cement waterproof paint; sealing and testing the bonding strength between the dry solid and the base surface in a closed environment after preparing a sample according to GB/T23445-2009; according to a test of 5.2.12 in the TB/T2965-2018 standard, directly pasting a matched wet-laid coil on the surface after coating, and testing the peel strength of the sealing dry-solid and wet-laid coils; according to a test of 5.2.12 in TB/T2965-2018 standard, directly pasting a matched wet-laid coil on the surface after coating the paint, maintaining for 14 days, and according to a test after soaking of 5.9 in JC/T1069-2008 (2017) standard and a peel strength after soaking of the wet-laid coil; water absorption was tested as JG/T375-2012; the specific test results are shown in the following table:
as can be seen from the above table, the polymer cement waterproofing coating prepared by the present invention: the tensile strength is 2.4-2.7MPa, the tensile strength retention rate after soaking is 84-86%, the elongation at break is 106-125%, the elongation at break after soaking is 92-110%, the bonding strength of a common base layer is 1.4-1.8 MPa, the bonding strength of a wet base layer is 1.3-1.6MPa, the bonding strength of the base layer after soaking is 1.3-1.8MPa, the bonding strength of a sealing dry-bonded and base surface is 1.5-2.0MPa, the impermeability (mortar back surface) is 1.1-1.4 MPa, the peeling strength of the sealing dry-bonded and wet-laid coiled materials is 3.5-3.8N/mm, the peeling strength of the sealing dry-bonded and wet-laid coiled materials after soaking is 3.0-3.5N/mm, the water absorption rate is 4.2-6.5%, and the open time is 28-45min.
The waterproof coating has good water resistance, and can maintain excellent waterproof performance under the conditions of long-term shady and wet environment such as underground and tunnels and the like, and under the water environment, the retention rate of tensile strength after soaking is 84-86%, the elongation at break after soaking is 92-110%, the bonding strength of the base layer after soaking is 1.3-1.8MPa, the peel strength of the base layer after soaking is 3.0-3.5N/mm, and the water absorption is 4.2-6.5%. On the basis of the performances, the impermeability (mortar back surface) of the waterproof coating is 1.1-1.4 MPa, the peel strength of the sealing dry-solid and wet-laid coiled materials is 3.5-3.8N/mm, the peel strength of the waterproof coating after soaking in water is 3.0-3.5N/mm, and the waterproof coating has the water slow release performance and can completely meet the requirements of wet-laid construction; the composite construction with the wet-laid coiled material has no bubbling, layering and falling off.
Except for special description, the proportions are mass ratios, and the percentages are mass percentages.
It is clear that many more embodiments can be varied within the inventive concept and that all changes that come within the scope of the invention are desired to be protected.
Claims (10)
1. A polymer cement waterproof coating is characterized in that: comprises a component A and a component B; the component B comprises an auxiliary agent for slowly releasing moisture; the component A comprises styrene-butadiene latex, modified paraffin emulsion, acrylic emulsion, water, sodium diisooctyl succinate and a defoaming agent.
2. The polymer cement waterproofing coating according to claim 1, wherein: the component B also comprises cement, quartz sand, heavy calcium carbonate and a melamine water reducing agent.
3. The polymer cement waterproofing coating according to claim 1, wherein: the component A comprises the following raw materials in parts by weight: 85-90 parts of styrene-butadiene latex, 1-1.5 parts of modified paraffin emulsion, 5-8 parts of acrylic emulsion, 2-5 parts of water, 0.4-0.5 part of sodium diisooctyl succinate and 0.2-0.4 part of defoamer.
4. The polymer cement waterproofing coating according to claim 2, characterized in that: the component B comprises the following raw materials in parts by weight: 0.5 to 0.8 part of HS auxiliary agent, 40 to 45 parts of cement, 40 to 45 parts of quartz sand, 10 to 20 parts of triple superphosphate and 0.5 to 0.8 part of melamine water reducing agent.
5. The polymer cement waterproofing coating according to claim 1, wherein: the auxiliary agent for slow release of water: the raw material components comprise the following components in parts by weight: 20 plus or minus 2 parts of hydroxypropyl methylcellulose, 10 plus or minus 1 part of sodium hydroxymethyl cellulose, 300 plus or minus 10 parts of sodium hydroxide solution and 30 plus or minus 2 parts of N-isopropyl acrylamide.
6. The polymer cement waterproofing coating according to claim 1, wherein: the preparation process of the auxiliary agent for slowly releasing the water comprises the following steps: sufficiently dissolving hydroxypropyl methylcellulose and sodium hydroxymethyl cellulose in a sodium hydroxide solution to obtain a mixed solution; adding N-isopropyl acrylamide into the mixed solution, and uniformly mixing the N-isopropyl acrylamide and the mixed solution by ultrasonic oscillation to obtain a jelly; the gum was then dry ground to 85 mesh.
7. The polymer cement waterproofing coating according to claim 2, characterized in that: the quartz sand: the fineness is 80 to 120 meshes; the heavy calcium: the fineness is 200 meshes.
8. The polymer cement waterproofing coating according to claim 1, wherein: the acrylic emulsion comprises the following components: the particle size is 30nm.
9. The polymer cement waterproofing coating according to claim 5, wherein: the auxiliary agent for slow release of water: the raw material components comprise the following components in parts by weight: 20 parts of hydroxypropyl methylcellulose, 10 parts of sodium hydroxymethyl cellulose, 300 parts of sodium hydroxide solution with the mass percentage concentration of 1%, and 30 parts of N-isopropyl acrylamide.
10. The polymer cement waterproofing coating according to claim 1, wherein: the impermeability of the waterproof coating is 1.1-1.4 MPa, the peel strength of the sealing dry-solid and wet-laid coiled material is 3.5-3.8N/mm, and the peel strength of the waterproof coating after the wet-laid coiled material is soaked in water is 3.0-3.5N/mm.
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Cited By (1)
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| CN116496668A (en) * | 2023-04-28 | 2023-07-28 | 江苏凯伦建材股份有限公司 | Polymer cement waterproof paint and application thereof |
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