CN115418149A - Non-asphalt-based non-cured waterproof coating and preparation method thereof - Google Patents
Non-asphalt-based non-cured waterproof coating and preparation method thereof Download PDFInfo
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- CN115418149A CN115418149A CN202210917987.8A CN202210917987A CN115418149A CN 115418149 A CN115418149 A CN 115418149A CN 202210917987 A CN202210917987 A CN 202210917987A CN 115418149 A CN115418149 A CN 115418149A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D157/00—Coating compositions based on unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D157/02—Copolymers of mineral oil hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer 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
Abstract
The invention discloses a non-asphalt-based non-cured waterproof coating and a preparation method thereof, and the raw materials for preparing the waterproof coating comprise: plasticizers, SBR modifiers, SBS modifiers, tackifying resins, dispersing aids, crosslinking agents, accelerators, fillers, optional antioxidants, optional odor scavengers, and optional pigments. The waterproof coating disclosed by the invention has good extensibility and heat aging resistance.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a non-asphalt-based non-cured waterproof coating and a preparation method thereof.
Background
The non-asphalt-based non-cured waterproof coating mainly comprises materials such as softening oil, petroleum resin, rubber and the like, and has good high-temperature and low-temperature performances, but the waterproof product has certain defects in extensibility and aging resistance, and the non-asphalt-based non-cured waterproof coating has good extensibility due to good extensibility of asphalt compared with the conventional asphalt-based non-cured waterproof coating, and has no material with excellent extensibility in the non-asphalt-based non-cured waterproof product, so that the non-asphalt-based waterproof coating has certain defects in extensibility. Meanwhile, in the existing non-asphalt-based non-cured waterproof coating, in order to enable a high polymer material to realize a creep state, more small-molecule oil is required to be added to soften the high polymer material, and the small-molecule oil volatilizes during thermal aging, so that the elongation performance is reduced rapidly, and the aging resistance is poor.
Therefore, the development of the non-asphalt-based non-cured waterproof coating with high extension and high stability (with thermal aging resistance) is of great significance for improving the waterproof reliability of the non-asphalt-based non-cured waterproof coating in a long-term service process and realizing the waterproof requirement with the same service life as a building.
Disclosure of Invention
The invention aims to provide a non-asphalt-based non-cured waterproof coating and a preparation method thereof, so that the prepared waterproof coating has high extensibility and heat aging resistance.
In order to achieve the above object, an aspect of the present invention provides a non-asphalt-based non-curable waterproof coating material, which is prepared from raw materials including: plasticizers, SBR modifiers, SBS modifiers, tackifying resins, dispersing aids, crosslinking agents, accelerators, fillers, optional antioxidants, optional odor scavengers, and optional pigments.
According to the present invention, preferably, the raw materials for preparing the waterproof coating material comprise, by weight: 25-50 parts of plasticizer, 5-10 parts of SBR modifier, 5-10 parts of SBS modifier, 20-30 parts of tackifying resin, 2-7 parts of dispersing aid, 0.01-0.5 part of cross-linking agent, 0.01-0.5 part of accelerator, 10-20 parts of filler, 0-3 parts of antioxidant, 0-1 part of odor removing agent and 0-5 parts of pigment.
In the present invention, it is preferable that the crosslinking agent is 0.01 to 0.2 part and the accelerator is 0.01 to 0.2 part.
According to the present invention, preferably, the cross-linking agent is 1-p-toluenesulfonylimidazole.
According to the present invention, preferably, the accelerator is at least one of a sulfenamide-based accelerator, a thiourea-based accelerator, and a xanthate-based accelerator.
In the invention, the catalyst reaction crosslinking technology is adopted, and the extensibility and the thermal aging resistance of the non-cured product are improved on the premise of not influencing other properties of the non-cured product. The selected cross-linking agent and the selected accelerator are all materials which are used for the first time in the field of non-cured product waterproofing.
According to the invention, a 1-p-methyl benzenesulfonylimidazole material is used as a crosslinking agent in the modification process, sulfenamides, thiourea, xanthates and other materials are used as accelerators, the crosslinking agent initiates rubber to perform crosslinking reaction, the accelerators improve the crosslinking rate and crosslinking quality, the rubber crosslinking net structure can improve the ductility of the rubber and improve the technical index of non-cured extensibility, and meanwhile, the net structure after rubber crosslinking has heat resistance and improves the long-term heat-resistant aging stability, so that the heat aging resistance and the heat aging extension performance of a non-cured product can be improved.
According to the present invention, preferably, the plasticizer is at least one of polyisobutylene, naphthenic oil, and paraffinic oil;
the number average molecular weight of the polyisobutene is preferably from 450 to 2400.
According to the present invention, preferably, the SBR modifier is styrene butadiene rubber powder; the content of the styrene butadiene rubber powder rubber is 50-90%;
the SBS modifier is prepared from styrene and butadiene in a mass ratio of (3-4): (6-7) linear SBS.
According to the present invention, preferably, the tackifying resin is at least one of a C5 petroleum resin, a hydrogenated C5 petroleum resin, a C9 petroleum resin, a hydrogenated C9 petroleum resin, a terpene resin, a rosin resin, and a coumarone resin;
the dispersing auxiliary agent is at least one of polyethylene wax, polypropylene wax, polyamide wax, oxidized polyethylene wax, modified polypropylene wax and modified polyamide wax;
the antioxidant is at least one of antioxidant 1076, antioxidant 1010, antioxidant 1024, antioxidant 1098, antioxidant 2246 and antioxidant 168.
According to the present invention, preferably, the filler is at least one of heavy calcium carbonate, light calcium carbonate and talc;
the pigment is at least one of iron oxide red, chromium oxide green and iron blue.
Another aspect of the present invention provides a method for preparing the above waterproof coating material, comprising:
(1) Adding a plasticizer into the reaction kettle, and heating;
(2) Adding SBR modifier and SBS modifier, swelling and grinding;
(3) Adding a cross-linking agent, an accelerator, an optional antioxidant and an optional deodorant to perform a cross-linking reaction;
(4) Adding tackifying resin and dispersing auxiliary agent, and stirring;
(5) Adding the pigment and stirring;
(6) Adding a filler, and stirring to obtain a non-asphalt-based non-cured waterproof coating;
wherein step (5) is an optional step.
In the present invention, step (5) is an optional step: when pigment addition is required, step (5) is present; when no pigment addition is required, step (5) is removed and step (6) becomes a new step (5).
According to the present invention, it is preferred that, among others,
(1) Adding a plasticizer into the reaction kettle, and heating to 130-160 ℃;
(2) Adding SBR modifier and SBS modifier, controlling temperature at 170-180 deg.c for swelling and 170-190 deg.c for grinding;
(3) Adding a cross-linking agent, an accelerating agent, an optional antioxidant and an optional deodorant, and controlling the temperature to be 170-180 ℃ to carry out cross-linking reaction;
(4) Adding tackifying resin and dispersing auxiliary agent, and stirring at 160-170 ℃;
(5) Adding pigment, and stirring at the temperature of 150-160 ℃;
(6) Adding a filler, and stirring at the temperature of 140-150 ℃ to obtain the non-asphalt-based non-cured waterproof coating;
wherein the step (5) is an optional step.
In the invention, preferably, in the step (2), the SBR modifier is added, stirred for 30-50min, and then the SBS modifier is added for swelling and grinding; wherein, the swelling time is preferably 15-30min, and the grinding time is preferably 60-90min.
In the step (3), the time of the crosslinking reaction is preferably 60 to 90min.
In the present invention, step (5) is an optional step: when pigment addition is required, step (5) exists; and (3) when pigment is not required to be added, removing the step (5), and changing the step (6) into a new step (5), namely adding the filler after the step (4), and stirring at the controlled temperature of 140-150 ℃ to obtain the non-asphalt-based non-cured waterproof coating.
The technical scheme of the invention has the following beneficial effects:
the waterproof coating disclosed by the invention can solve the problems of low extensibility, low construction coating efficiency and easiness in occurrence of hidden danger of water leakage points of a non-asphalt-based non-cured waterproof coating, and has good extensibility and heat aging resistance.
The waterproof coating disclosed by the invention has high extensibility and good construction ductility, so that the single coating rate of the waterproof coating is improved in construction, and the hidden danger of a water leakage point caused by multiple coatings due to poor ductility is avoided.
The waterproof coating disclosed by the invention is low in formula investment and high in performance technical effect, and has obvious market advantages in application.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention is further illustrated by the following examples:
in each of the following examples and comparative examples, the accelerator used was N-oxydiethylene-2-benzothiazolesulfenamide; the oxidized polyethylene wax is purchased from Honeywell corporation and has the mark number of 8903; the odor eliminator used was purchased from Zhonghai cis-da under the designation SD-10FG.
Example 1
The embodiment provides a non-asphalt-based non-cured waterproof coating, and the specific raw material composition is shown in table 1;
TABLE 1
| Serial number | Raw material | Quantity, kg |
| 1 | Plasticizer | 34.9 |
| 2 | SBR modifier | 5 |
| 3 | SBS modifier | 6 |
| 4 | Tackifying resins | 25 |
| 5 | Dispersing aid | 3 |
| 6 | Deodorant | 1 |
| 7 | Crosslinking agent | 0.05 |
| 8 | Accelerator | 0.05 |
| 9 | Antioxidant agent | 2 |
| 10 | Pigment(s) | 3 |
| 11 | Filler material | 20 |
The plasticizer is a mixture of polyisobutylene (with a number average molecular weight of 1300) and naphthenic oil, and the mass ratio of the polyisobutylene (with the number average molecular weight of 1300) to the naphthenic oil mixture is 1:4; the SBR modifier is styrene butadiene rubber powder with the rubber content of 90 percent; the SBS modifier is styrene/butadiene with the mass ratio of 3:7 linear SBS; the tackifying resin is a mixture of C5 petroleum resin and C9 petroleum resin, and the mass ratio of the C5 petroleum resin to the C9 petroleum resin is 3:2; the dispersing auxiliary agent is polyethylene wax; the cross-linking agent is 1-p-methyl benzenesulfonylimidazole; the accelerator is N-oxydiethylene-2-benzothiazole sulfonamide; the antioxidant is antioxidant 1076; the pigment is iron oxide red; the filler is heavy calcium carbonate.
The preparation method comprises the following steps: adding polyisobutylene and naphthenic oil into a reaction kettle, heating to 145 ℃, adding an SBR modifier at 145 ℃, stirring for 45min, adding an SBS modifier, swelling for 20min at 175 ℃, controlling the temperature to be 180 ℃, grinding for 60min by using a colloid mill, then adding a cross-linking agent, an accelerant, a deodorant and an antioxidant, controlling the temperature to be 175 ℃, stirring for 60min, adding a tackifying resin and a dispersing auxiliary agent, stirring for 30min at 165 ℃, adding a pigment, stirring for 30min at 155 ℃, adding a filler, stirring at 145 ℃, and uniformly stirring to obtain the non-asphalt-based non-cured waterproof coating.
Example 2
The embodiment provides a non-asphalt-based non-cured waterproof coating, and the specific raw material composition is shown in table 2;
TABLE 2
Wherein the plasticizer is naphthenic oil; the SBR modifier is styrene butadiene rubber powder with the rubber content of 80 percent; the SBS modifier is styrene/butadiene with the mass ratio of 4:6 linear SBS; the tackifying resin is C5 petroleum resin; the dispersing auxiliary agent is oxidized polyethylene wax; the cross-linking agent is 1-p-methyl benzenesulfonylimidazole; the accelerator is N-oxydiethylene-2-benzothiazole sulfonamide; the antioxidant is antioxidant 1010; the pigment is chromium oxide green; the filler is talcum powder.
The preparation method comprises the following steps: adding naphthenic oil into a reaction kettle, heating to 145 ℃, adding an SBR modifier at 145 ℃, stirring for 45min, adding an SBS modifier, swelling for 20min at 175 ℃, controlling the temperature at 180 ℃, grinding for 60min by using a colloid mill, then adding a cross-linking agent, an accelerant, a deodorant and an antioxidant, controlling the temperature at 175 ℃, stirring for 60min, adding a tackifying resin and a dispersing aid, stirring for 30min at 165 ℃, adding a pigment, stirring for 30min at 155 ℃, adding a filler, stirring at 145 ℃, and uniformly stirring to obtain the non-asphalt-based non-cured waterproof coating.
Example 3
The embodiment provides a non-asphalt-based non-cured waterproof coating, and the specific raw material composition is shown in table 3;
TABLE 3
Wherein the plasticizer is naphthenic oil; the SBR modifier is styrene butadiene rubber powder with the rubber content of 50 percent; the SBS modifier is styrene/butadiene with the mass ratio of 3:7, linear SBS; the tackifying resin is C5 petroleum resin; the dispersing auxiliary agent is oxidized polyethylene wax; the cross-linking agent is 1-p-methyl benzenesulfonylimidazole; the accelerator is N-oxydiethylene-2-benzothiazole sulfonamide; the filler is talcum powder.
The preparation method comprises the following steps: adding naphthenic oil into a reaction kettle, heating to 145 ℃, adding an SBR modifier at 145 ℃, stirring for 45min, adding an SBS modifier, swelling for 20min at 175 ℃, controlling the temperature to be 180 ℃, grinding for 60min by using a colloid mill, adding a cross-linking agent and an accelerant, controlling the temperature to be 175 ℃, stirring for 60min, adding tackifying resin and a dispersing auxiliary agent, stirring for 30min at 165 ℃, adding a filler, stirring at 145 ℃, and uniformly stirring to obtain the non-asphalt-based non-cured waterproof coating.
Comparative example 1
The comparative example provides a conventional non-asphalt based non-cured waterproof coating, and the specific formulation composition is shown in table 4.
TABLE 4
The plasticizer is a mixture of polyisobutylene (with a number average molecular weight of 1300) and naphthenic oil, and the mass ratio of the polyisobutylene (with the number average molecular weight of 1300) to the naphthenic oil mixture is 1:4; the SBR modifier is styrene butadiene rubber powder with the rubber content of 90 percent; the SBS modifier is styrene/butadiene with the mass ratio of 3:7 linear SBS; the tackifying resin is a mixture of C5 petroleum resin and C9 petroleum resin, and the mass ratio of the C5 petroleum resin to the C9 petroleum resin is 3:2; the dispersing auxiliary agent is polyethylene wax; the antioxidant is antioxidant 1076; the pigment is iron oxide red; the filler is heavy calcium carbonate.
The preparation method comprises the following steps: adding polyisobutylene and naphthenic oil into a reaction kettle, heating to 145 ℃, adding an SBR modifier at 145 ℃, stirring for 45min, adding an SBS modifier, swelling for 20min at 175 ℃, controlling the temperature to be 180 ℃, grinding for 60min by using a colloid mill, adding a deodorant and an antioxidant, controlling the temperature to be 175 ℃, stirring for 60min, adding a tackifying resin and a dispersing auxiliary agent, stirring for 30min at 165 ℃, adding a pigment, stirring for 30min at 155 ℃, adding a filler, stirring at 145 ℃, and uniformly stirring to obtain the non-asphalt-based non-cured waterproof coating.
Test example
Examples 1-3 and comparative example 1 were tested for performance wherein extensibility and post heat aging extensibility were performed as described in standard JC/T2428-2017, wherein heat aging extensibility was extended for test time (from 7 days to 28 days) and thermal isolation was performed as described in standard JTG E20-2011 (T0661-2011) with the specific test results set forth in table 5.
TABLE 5
| Test items | Example 1 | Example 2 | Example 3 | Comparative example 1 |
| Extensibility in mm | 67 | 89 | 45 | 25 |
| Elongation after Heat aging (70 ℃,28 days)/mm | 55 | 76 | 39 | 10 |
| Thermal isolation (163 ℃,48 h)/. Deg.C | 5 | 3 | 7 | 15 |
As shown in Table 5, the ductility, the elongation after thermal aging, and the thermal segregation in the examples are all higher than those in the comparative examples, wherein the ductility retention rate after thermal aging is more than 80%, and the thermal segregation is 5 ℃ on average, so it can be seen that the non-asphalt-based non-cured waterproof coating of the present invention has excellent high ductility, thermal stability, and excellent ductility and long-term durability in construction.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. The non-asphalt-based non-cured waterproof coating is characterized by comprising the following raw materials: plasticizers, SBR modifiers, SBS modifiers, tackifying resins, dispersing aids, crosslinking agents, accelerators, fillers, optional antioxidants, optional odor scavengers, and optional pigments.
2. The waterproof coating material according to claim 1, wherein the raw materials for preparing the waterproof coating material comprise, in parts by weight: 25-50 parts of plasticizer, 5-10 parts of SBR modifier, 5-10 parts of SBS modifier, 20-30 parts of tackifying resin, 2-7 parts of dispersing aid, 0.01-0.5 part of cross-linking agent, 0.01-0.5 part of accelerator, 10-20 parts of filler, 0-3 parts of antioxidant, 0-1 part of odor removing agent and 0-5 parts of pigment.
3. The waterproof coating material according to claim 1 or 2, wherein the crosslinking agent is 1-p-toluenesulfonylimidazole.
4. The waterproof coating material according to claim 1 or 2, wherein the accelerator is at least one of a sulfenamide-based accelerator, a thiourea-based accelerator, and a xanthate-based accelerator.
5. The waterproof coating material according to claim 1 or 2, wherein the plasticizer is at least one of polyisobutylene, naphthenic oil, and paraffinic oil;
the number average molecular weight of the polyisobutene is preferably from 450 to 2400.
6. The waterproof coating material according to claim 1 or 2, wherein the SBR modifier is styrene-butadiene rubber powder; the content of the styrene butadiene rubber powder rubber is 50-90%;
the SBS modifier is prepared from styrene and butadiene in a mass ratio of (3-4): (6-7) linear SBS.
7. The waterproof coating material according to claim 1 or 2, wherein the tackifier resin is at least one of a C5 petroleum resin, a hydrogenated C5 petroleum resin, a C9 petroleum resin, a hydrogenated C9 petroleum resin, a terpene resin, a rosin resin, and a coumarone resin;
the dispersing auxiliary agent is at least one of polyethylene wax, polypropylene wax, polyamide wax, oxidized polyethylene wax, modified polypropylene wax and modified polyamide wax;
the antioxidant is at least one of an antioxidant 1076, an antioxidant 1010, an antioxidant 1024, an antioxidant 1098, an antioxidant 2246, and an antioxidant 168.
8. The waterproof coating material according to claim 1 or 2, wherein the filler is at least one of heavy calcium carbonate, light calcium carbonate, and talc;
the pigment is at least one of iron oxide red, chromium oxide green and iron blue.
9. The method for preparing a waterproof coating material according to any one of claims 1 to 8, characterized by comprising:
(1) Adding a plasticizer into the reaction kettle, and heating;
(2) Adding SBR modifier and SBS modifier, swelling and grinding;
(3) Adding a cross-linking agent, an accelerator, an optional antioxidant and an optional deodorant to perform a cross-linking reaction;
(4) Adding tackifying resin and dispersing auxiliary agent, and stirring;
(5) Adding pigment and stirring;
(6) Adding a filler, and stirring to obtain a non-asphalt-based non-cured waterproof coating;
wherein step (5) is an optional step.
10. The production method according to claim 9, wherein,
(1) Adding a plasticizer into the reaction kettle, and heating to 130-160 ℃;
(2) Adding SBR modifier and SBS modifier, controlling temperature at 170-180 deg.c for swelling and 170-190 deg.c for grinding;
(3) Adding a cross-linking agent, an accelerating agent, an optional antioxidant and an optional deodorant, and controlling the temperature to be 170-180 ℃ to carry out cross-linking reaction;
(4) Adding tackifying resin and dispersing auxiliary agent, and stirring at 160-170 ℃;
(5) Adding pigment, and stirring at the temperature of 150-160 ℃;
(6) Adding a filler, and stirring at the temperature of 140-150 ℃ to obtain a non-asphalt-based non-cured waterproof coating;
wherein step (5) is an optional step.
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