CN108250996B - Salt and alkali resistant three-dimensional colorful decorative waterproof coiled material and preparation method and application thereof - Google Patents
Salt and alkali resistant three-dimensional colorful decorative waterproof coiled material and preparation method and application thereof Download PDFInfo
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Abstract
The application relates to a salt and alkali resistant three-dimensional colorful decorative waterproof coiled material and a preparation method and application thereof. The utility model provides a waterproofing membrane includes the child base, sets up the modified asphalt layer of salt alkali and the saline and alkaline modified asphalt layer down on the upper and lower surface of child base respectively, sets up the colored overburden of keeping away from child base one side on the modified asphalt layer of salt alkali at last to and set up the isolation layer of keeping away from child base one side on the modified asphalt layer of salt alkali under. The waterproof coiled material has excellent high and low temperature performance, high elasticity, high viscosity, saline-alkali resistance, waterproofness and decorative functions, and is particularly suitable for being applied to coastal or high-saline-alkali areas.
Description
Technical Field
The application belongs to the field of building materials, relates to a waterproof roll, and particularly relates to a salt and alkali resistant three-dimensional colorful decorative waterproof roll, and a preparation method and application thereof.
Background
Since the 80 s, SBS (styrene-butadiene-styrene ternary block copolymer) modified asphalt waterproof coiled materials have low price, convenient construction, good waterproof effect and other high-quality performances, and are rapidly popularized and applied in the building waterproof industry, so that SBS modified asphalt waterproof coiled materials become one of the most important and most common coiled material products in waterproof materials. With the expansion of the application range of SBS and the research, SBS modified asphalt has certain defects. SBS can improve the high-temperature and low-temperature properties of asphalt to some extent, but is not as effective as resin in improving high-temperature properties and as poor as rubber in improving low-temperature properties, and is not ideal for improving fatigue properties of asphalt. In addition, in coastal areas or high saline-alkali areas, as the seaside atmosphere and the marine environment contain more NaCl and MgCl particles, the content of chloride ions is relatively high, the surface of a building is difficult to form a stable protective rust layer, and in addition, the coastal areas have the characteristics of strong illumination, rich rainfall, moist air, acid rain and the like, the common SBS modified asphalt waterproof coiled material is extremely easy to corrode under the special environmental condition, and the waterproof performance is also extremely easy to attenuate. Therefore, it is necessary to develop a modified asphalt waterproof roll with excellent saline-alkali resistance.
The gutta-percha is a natural colloid extracted from leaves, bark and seeds of eucommia ulmoides, has the same chemical composition with natural rubber, and is (C)5H8)nExcept that the molecular chain configurations of the two are different, the natural rubber is cis-polyisoprene, and the natural gutta-percha is trans-polyisoprene. Natural gutta-percha is a hard rubber and belongs to a non-elastomer. The gutta-percha has three characteristics of double bond, flexibility and trans-structure, and the modified gutta-percha can be used as a rubber elastic material. Similar to the modification of natural rubber, gutta percha is generally subjected to vulcanization modification, so that trans-polyisoprene long-chain molecules in the gutta percha are crosslinked. The properties of the gutta percha can be controlled by controlling the degree of crosslinking, so that the gutta percha becomes a thermoplastic hard material, a thermoelastic hard material or a rubber type material. At present, eucommia ulmoides is studied for preparing modified asphalt, for example, aged autumn and the like study the vulcanization crosslinking degree of the eucommia ulmoides for asphalt modification (see, "study on the vulcanization crosslinking degree of the eucommia ulmoides for asphalt modification", aged autumn and the like, highway, 8 months in 2013, 8 th period, 267-plus 270 pages), and the Chinese patent application publication No. CN105111757A discloses high-viscosity modified asphalt, wherein the asphalt adopts styrene copolymer, Sasobit asphalt modifier, eucommia ulmoides rubber, styrene butadiene rubber and sulfur as modifying components to interact with matrix asphalt to prepare the high-viscosity modified asphalt.
However, in the method of CN105111757A, the whole base asphalt and the other modified components except sulfur are heated, stirred uniformly, and then added with sulfur and sheared, because the amount of sulfur used is very small (0.2-1.5 wt%) relative to the amount of base asphalt, sufficient crosslinking of the modified components such as gutta percha and styrene copolymer cannot be ensured. Therefore, when the modified asphalt is used in a waterproof roll, performance indexes such as waterproofness and extensibility are not very ideal. Therefore, it is necessary to develop a modified asphalt suitable for a waterproof roll.
Disclosure of Invention
In order to overcome at least a problem that SBS modified asphalt waterproofing membrane exists among the prior art, this application provides a three-dimensional colorful decoration waterproofing membrane of salt and alkali tolerant type on the one hand, and it includes the child base, set up on the child base upper and lower surface last salt and alkali tolerant modified asphalt layer and lower salt and alkali tolerant modified asphalt layer, set up the colored overburden of keeping away from child base one side on last salt and alkali tolerant modified asphalt layer to and set up the isolation layer of keeping away from child base one side on lower salt and alkali tolerant modified asphalt layer.
In one embodiment, the raw materials of the saline-alkali resistant modified asphalt layer comprise the following components in parts by weight:
wherein the composite modifier comprises the following raw materials in parts by weight: SBS: 20-75 parts of eucommia ulmoides gum: 20-75 parts of sulfur: 5-10 parts, polysulfide: 5-10 parts.
In one embodiment, the raw materials of the saline-alkali resistant modified asphalt layer comprise the following components in parts by weight:
wherein the composite modifier comprises the following raw materials in parts by weight: SBS: 45 parts of eucommia ulmoides gum: 45 parts, sulfur: 4 parts, polysulfide: 6 parts.
In one embodiment, the raw materials of the saline-alkali resistant modified asphalt layer comprise the following components in parts by weight:
wherein the composite modifier comprises the following raw materials in parts by weight: SBS: 50 parts of eucommia ulmoides gum: 50 parts, sulfur: 5 parts, polysulfide: 5 parts of the raw materials.
In one embodiment, the raw materials of the saline-alkali resistant modified asphalt layer comprise the following components in parts by weight:
wherein the composite modifier comprises the following raw materials in parts by weight: SBS: 40 parts of eucommia ulmoides gum: 40 parts, sulfur: 6 parts, polysulfide: 4 parts.
In one embodiment, the base is a polyester felt, a fiberglass felt, or a fiberglass reinforced polyester felt.
In one embodiment, the polysulfide is selected from one, or a mixture of two or three, of tetramethylthiuram disulfide, dithiodimorpholine, and dibenzothiazyl disulfide. When a mixture of two or three of them is used, there is no particular limitation on their weight ratio.
In one embodiment, the anti-salt alkali agent is selected from one or both of sodium dihydrogen phosphate and dipotassium hydrogen phosphate. When a mixture of the two is preferably used, it is preferable that the molar ratio of sodium dihydrogen phosphate to dipotassium hydrogen phosphate is 1:5 to 5:1, and more preferably 1: 1.
In one embodiment, the antacid-alkaline agent is selected from a mixture of one or more of epoxy resin, tackifying resin and quartz powder. When a mixture of two or three of them is used, there is no particular limitation on their weight ratio.
In one embodiment, the filler is selected from a mixture of one or more of talc, ground calcium carbonate, mica powder, bentonite, calcium silicate powder and kaolin. When a mixture of two or more of them is used, there is no particular limitation on the weight ratio thereof.
In one embodiment, the softening oil is selected from a mixture of one or more of reduced line oil, furfural extract oil, aromatic oil, and naphthenic oil. When a mixture of two or more of them is used, there is no particular limitation on their weight ratio.
In one embodiment, the barrier layer is a polyethylene film.
In one embodiment, the color coat is ceramic sintered sand.
In one embodiment, the saline alkali resistant modified asphalt layer optionally further comprises a mixture of one or more selected from amorphous propylene copolymer (APAO), High Density Polyethylene (HDPE), and polypropylene (PP) as a reinforcing agent.
In one embodiment, the preparation method of the composite modifier comprises the following steps: and heating SBS and gutta-percha to 180 ℃ under stirring, adding the same weight parts of base asphalt prepared by uniformly stirring 100# asphalt and 10# asphalt at 180 ℃ under 170 ℃ according to the raw material proportion in the saline-alkali resistant modified asphalt, uniformly mixing, adding sulfur and polysulfide under stirring, and keeping for 10-30 minutes to obtain the modified asphalt.
The second aspect of the application provides a preparation method of the salt and alkali resistant three-dimensional colorful decorative waterproof roll, which comprises the following steps:
step 1: preparation of modified asphalt
1 a: heating 100# asphalt and 10# asphalt to 180 ℃ under stirring until the asphalt and the 10# asphalt are uniformly mixed to obtain base asphalt, and preserving heat for later use;
1 b: heating SBS and gutta-percha to 160-180 ℃ under stirring, adding the equal weight parts of the matrix asphalt prepared in the step 1a under stirring, uniformly mixing, adding sulfur and polysulfide under stirring, and keeping for 10-30 minutes;
1 c: adding the rest matrix asphalt, softening oil, anti-salt-alkali agent, anti-acid-alkali agent and optional reinforcing agent in sequence, stirring while adding until the mixture is uniform, finally adding filler and uniformly mixing, and discharging;
step 2: base coating
Drying the base and carrying out oil immersion treatment; enabling the tire base soaked with the oil to enter a coating pool, and coating the modified asphalt prepared in the step 1 to two sides of the tire base;
and step 3: film pressing
Coating modified asphalt on the base, cooling to the temperature of 100-120 ℃ of the lower modified asphalt layer, and pressing the isolation layer by using a laminator;
and 4, step 4: covering sand
The temperature of the modified asphalt layer on the waterproof roll is controlled to be 120-130 ℃, and the upper surface of the modified asphalt layer is uniformly covered with ceramic sintered sand by a sand covering machine.
In one embodiment, the temperature of the tire base oil immersion in step 2 is 190-200 ℃ and the coating temperature of the modified asphalt is 180-190 ℃.
In one embodiment, the thicknesses of the upper and lower saline-alkali resistant modified asphalt layers are respectively 0.5-1.5mm, preferably 0.8-1.2 mm; the thickness of the color covering layer is 0.5-3 mm. Wherein the thicknesses of the upper and lower saline-alkali resistant modified asphalt layers can be the same or different.
The third aspect of the application provides an application of the salt and alkali resistant three-dimensional multicolor decorative waterproof coiled material in building waterproof, wherein the waterproof coiled material is constructed by a hot melting method.
In one embodiment, the three-dimensional multicolor decorative waterproof roll is preferably applied to coastal areas or high-saline-alkali areas.
The features described in the above embodiments of the present application may be combined in any combination as long as conventional knowledge in the art is not violated.
The salt and alkali resistant three-dimensional colorful decorative waterproof coiled material has the following beneficial effects:
1. the asphalt matrix is modified by adopting a composite modifier prepared from SBS and gutta percha under the crosslinking action of sulfur and polysulfide, and the obtained modified asphalt has excellent high-low temperature performance, high elasticity, high viscosity and waterproofness, and is beneficial to the saline-alkali resistance and acid-alkali resistance of the waterproof roll; the modified asphalt comprises a main component, a main component and a main component, wherein partial asphalt matrix, SBS and gutta-percha are vulcanized together, and sulfur and polysulfide can be fully contacted with SBS, gutta-percha and the asphalt matrix, so that cross-linking;
2. the sodium dihydrogen phosphate and the dipotassium hydrogen phosphate are very stable in an alkaline environment, the epoxy resin and the tackifying resin are very stable in an acidic environment, the strength of quartz powder is good, the structural stability is good, and the modified asphalt waterproof coiled material is acid-base resistant;
3. the ceramic sintered sand on the surface layer enhances the strength and the resistance to damage, can effectively resist sunshine, oxidation and corrosion, and enhances the durability of the waterproof roll;
4. the salt and alkali resistant three-dimensional colorful decorative waterproof coiled material is constructed by a hot melting method, is not influenced by the environmental temperature, can be exposed for construction, can be used all the year round, has excellent dimensional stability and is reliable and durable due to hot joint; and
5. the sintered sand layer can play a decorative role, and only the construction is needed to correctly align the patterns, so that the product has beautiful appearance patterns, rich and colorful colors and strong stereoscopic impression, thereby achieving the effect of integration of waterproof decoration.
Detailed Description
The salt and alkali resistant three-dimensional colorful decorative waterproof roll material of the present application is further described below with reference to specific examples. These examples are intended to be illustrative of the present application only and are not intended to limit the scope of the present application. Experimental procedures without specific conditions noted in the following examples are generally performed according to conditions conventional in the art or as recommended by the manufacturer. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. In addition, any methods and materials similar or equivalent to those described herein can be used in the methods of the present application.
Example 1: screening of vulcanizing agent in composite modifier
In order to select a composite modifier with excellent properties, the crosslinking effect of several commonly used rubber vulcanizing agents on a mixture of SBS and gutta percha with an asphalt matrix was examined in examples, and four technical indexes of softening point, ductility, segregation and elastic recovery were measured on the prepared modified asphalt precursor (i.e., the modified asphalt in which only a part of the asphalt matrix is mixed and no softening oil, salt and alkali resistant agent and acid and alkali resistant agent are added, with respect to the modified asphalt described in the present application), which is referred to herein as "modified asphalt precursor".
On the basis of the preliminary test in the early stage, the dosage of the vulcanizing agent is determined to be about 10 percent of the dosage of the SBS and the gutta percha, and the dosage of the asphalt matrix which is crosslinked together with the SBS and the gutta percha is approximately equal to the total weight of the SBS and the gutta percha. The type and amount (parts by weight) of vulcanizing agent tested is shown in table 1 below:
table 1: different kinds of vulcanizing agents and the amount thereof
60 parts of 100# asphalt, 30 parts of 10# asphalt, 45 parts of SBS and 45 parts of eucommia ulmoides gum are matched with the vulcanizing agent.
The modified asphalt precursor was prepared as follows: step (1): heating 100# asphalt and 10# asphalt to 170 ℃ under stirring until the asphalt and the 10# asphalt are uniformly mixed to obtain matrix asphalt, and preserving heat for later use; and a step (2): and (2) heating SBS and gutta-percha to 160 ℃ under stirring, adding the same weight of the matrix asphalt prepared in the step 1a under stirring, uniformly mixing, adding the vulcanizing agent in the table 1 under stirring, and keeping for 20 minutes to obtain the asphalt.
The softening point is the temperature at which the asphalt can flow under the action of external force, and the softening point is tested by adopting a ring and ball method in the embodiment. The higher the softening point, the better the heat resistance of the asphalt. The specific test method refers to GB/T4507-2014.
Ductility is the length (cm) of an asphalt or modified asphalt at a specified temperature at a rate of 50mm per minute to break. The larger the ductility value, the better the plasticity of the asphalt. The specific test method refers to GB/T4508-2010.
The segregation is an index for characterizing the compatibility of the modifier and the asphalt matrix and the storage stability. The lower the segregation, the better the compatibility of the modifier with the asphalt matrix and the better the storage stability. The specific test method refers to the test procedure for road engineering asphalt and asphalt mixture (JTGE20-2011), wherein the storage stability of the asphalt mixture for 48 hours is regulated, and the segregation softening point difference is less than or equal to 2.5.
The elastic recovery is primarily characterized by the ability of the asphalt to recover deformation after being pulled down to a specified length at a constant rate. The higher the elastic recovery rate, the stronger the ability of asphalt to recover deformation. The specific test method refers to the road engineering asphalt and asphalt mixture test procedure (JTG E20-2011), and the 25 ℃ elastic recovery rate of the asphalt mixture is not less than 75 in the procedure.
Further, the modified asphalt prepared by the method described in example 1 of CN105111757A was designated as modified asphalt No. 11.
The results of the softening point, ductility, segregation and elastic recovery measured under the same conditions for the modified asphalt precursors No. 1 to 10-3 and the modified asphalt No. 11 described above are shown in Table 2 below.
Table 2: results of testing the softening point, ductility, segregation and elastic recovery of each modified asphalt precursor/modified asphalt
As can be seen from the results in Table 2 above, the overall performance data for Nos. 1-5 using a single curative type is poorer, and inferior to Nos. 6-1 to 10-3 using the mixed curatives. In addition, the performance data of the hybrid vulcanizing agents of No. 6-1 to No. 10-3 using the hybrid vulcanizing agent are best, wherein the weight ratio of the sulfur (S) to the tetramethylthiuram disulfide (TMTD) is 1:1, the weight ratio of the sulfur (S) to the dithiodimorpholine (DTDM) is 1:1, and the weight ratio of the sulfur (S) to the dibenzothiazyl disulfide (MBTS) is 1:1, of No. 6-1 to No. 7-1. Therefore, when the salt and alkali resistant three-dimensional colorful decorative waterproof coiled material is prepared subsequently, a mixture containing sulfur and polysulfide (such as tetramethyl thiuram disulfide, dithiodimorpholine and dibenzothiazyl disulfide) in a weight ratio of 1:1 is selected as a vulcanizing agent, and SBS and gutta percha are combined as a composite modifier to modify an asphalt matrix, so that the modified asphalt waterproof coiled material is prepared.
Example 2: preparation of salt and alkali resistant three-dimensional colorful decorative waterproof coiled material 1
The weight parts of the raw materials are as follows:
the preparation method comprises the following steps:
step 1: preparation of modified asphalt
1 a: heating 100# asphalt and 10# asphalt to 170 ℃ under stirring until the asphalt and the 10# asphalt are uniformly mixed to obtain matrix asphalt, and preserving heat for later use;
1 b: heating SBS and gutta-percha to 160 ℃ under stirring, adding the equal weight parts of the matrix asphalt prepared in the step 1a while stirring, uniformly mixing, adding sulfur and tetramethyl thiuram disulfide while stirring, and keeping for 20 minutes;
1 c: sequentially adding the rest matrix asphalt, naphthenic oil, aromatic oil, sodium dihydrogen phosphate, dipotassium hydrogen phosphate, epoxy resin and quartz powder, stirring while adding until the mixture is uniformly mixed, finally adding talcum powder, uniformly mixing and discharging;
step 2: base coating
Drying the polyester felt base, and performing oil immersion treatment at 190 ℃; enabling the tire base soaked with the oil to enter a coating pool, and coating the modified asphalt prepared in the step 1 to two sides of the tire base at 180 ℃, wherein the coating thickness is 1.1mm of a lower modified asphalt layer and 0.9mm of an upper modified asphalt layer;
and step 3: film pressing
Coating modified asphalt on the base, cooling to 120 deg.C, and pressing with a laminator to obtain polyethylene film;
and 4, step 4: covering sand
And controlling the temperature of the modified asphalt layer on the waterproof roll to be 120 ℃, and uniformly covering ceramic sintered sand on the upper surface of the modified asphalt layer by using a sand covering machine, wherein the sand covering thickness is 1.0 mm.
Example 3: preparation of salt and alkali resistant three-dimensional colorful decorative waterproof coiled material 2
The weight parts of the raw materials are as follows:
the preparation method comprises the following steps:
step 1: preparation of modified asphalt
1 a: heating 100# asphalt and 10# asphalt to 180 ℃ under stirring until the asphalt and the 10# asphalt are uniformly mixed to obtain matrix asphalt, and preserving heat for later use;
1 b: heating SBS and gutta-percha to 170 ℃ under stirring, adding the same weight parts of the base asphalt prepared in the step 1a while stirring, uniformly mixing, adding sulfur and dithiodimorpholine while stirring, and keeping for 10 minutes;
1 c: sequentially adding the rest matrix asphalt, the reduced line oil, the furfural extract oil, the sodium dihydrogen phosphate, the dipotassium hydrogen phosphate, the tackifying resin and the quartz powder, stirring while adding until the mixture is uniformly mixed, and finally adding the heavy calcium carbonate and the mica powder, uniformly mixing and discharging;
step 2: base coating
Drying the glass fiber reinforced polyester felt base, and performing oil immersion treatment at 200 ℃; enabling the tire base soaked with the oil to enter a coating pool, and coating the modified asphalt prepared in the step 1 to two sides of the tire base at 190 ℃, wherein the coating thickness is 1.2mm of a lower modified asphalt layer and 0.8mm of an upper modified asphalt layer;
and step 3: film pressing
Coating modified asphalt on the base, cooling to 120 deg.C, and pressing with a laminator to obtain polyethylene film;
and 4, step 4: covering sand
And controlling the temperature of the modified asphalt layer on the waterproof roll to be 120 ℃, and uniformly covering ceramic sintered sand on the upper surface of the modified asphalt layer by using a sand covering machine, wherein the sand covering thickness is 1.1 mm.
Example 4: preparation of salt and alkali resistant three-dimensional colorful decorative waterproof coiled material 3
The weight parts of the raw materials are as follows:
the preparation method comprises the following steps:
step 1: preparation of modified asphalt
1 a: heating 100# asphalt and 10# asphalt to 170 ℃ under stirring until the asphalt and the 10# asphalt are uniformly mixed to obtain matrix asphalt, and preserving heat for later use;
1 b: heating SBS and gutta-percha to 170 ℃ under stirring, adding the same weight parts of the matrix asphalt prepared in the step 1a while stirring, uniformly mixing, adding sulfur and dibenzothiazyl disulfide while stirring, and keeping for 15 minutes;
1 c: sequentially adding the rest matrix asphalt, aromatic oil, naphthenic oil, linear reduction oil, sodium dihydrogen phosphate, dipotassium hydrogen phosphate and quartz powder, stirring while adding until the mixture is uniformly mixed, finally adding bentonite and calcium silicate powder, uniformly mixing and discharging;
step 2: base coating
Drying the polyester felt base, and performing oil immersion treatment at 195 ℃; enabling the tire base soaked with the oil to enter a coating pool, and coating the modified asphalt prepared in the step 1 to two sides of the tire base at 185 ℃, wherein the coating thickness is 1.0mm of a lower modified asphalt layer and 1.0mm of an upper modified asphalt layer;
and step 3: film pressing
Coating modified asphalt on the base, cooling to 120 deg.C, and pressing with a laminator to obtain polyethylene film;
and 4, step 4: covering sand
And controlling the temperature of the modified asphalt layer on the waterproof roll to be 130 ℃, and uniformly covering ceramic sintered sand on the upper surface of the modified asphalt layer by using a sand covering machine, wherein the sand covering thickness is 1.2 mm.
Comparative example 1: preparation of gutta-percha-free waterproof roll 4
The formulation was the same as in example 2 except that no gutta-percha was added, and a waterproof roll 4 containing no gutta-percha was prepared by the method of example 2.
Comparative example 2: preparation of SBS-free waterproofing roll 5
The formulation was the same as in example 2 except that SBS was not added, and a SBS-free waterproofing membrane 5 was prepared by the method of example 2.
Comparative example 3: preparation of Sulfur-and polysulfide-free waterproofing roll 6
A water-repellent coil 6 free of sulfur and polysulfide was produced by the same method as in example 2, except that no sulfur and polysulfide were added, and the formulation was the same as in example 2.
Comparative example 4: preparation of waterproofing membrane 7 without salt and alkali resistant agent
A water-proof roll 7 containing no salt-alkali inhibitor was produced by the same method as in example 2, except that no salt-alkali inhibitor, i.e., sodium dihydrogen phosphate and dipotassium hydrogen phosphate (molar ratio 1:1), was added.
Comparative example 5: preparation of waterproof roll 8 not containing acid and alkali resistant agent
The formulation was the same as in example 2 except that the acid and alkali resistant agents, epoxy resin and quartz powder, were not added, and a waterproof roll 8 not containing the acid and alkali resistant agent was prepared by the method of example 2.
Comparative example 6: saline-alkali resistant waterproof roll 9 further prepared by adopting modified asphalt prepared in CN105111757A
The preparation method comprises the following steps:
step 1: modified asphalt was prepared by the method described in example 1 of CN 105111757A;
step 2: adding the naphthenic oil and the aromatic oil, the sodium dihydrogen phosphate, the dipotassium hydrogen phosphate, the epoxy resin and the quartz powder in the embodiment 2 at 185 ℃ into the modified asphalt obtained in the step 1, stirring while adding until the materials are uniformly mixed, finally adding the talcum powder, uniformly mixing and discharging; wherein the amounts of naphthenic oil, aromatic oil, sodium dihydrogen phosphate and dipotassium hydrogen phosphate (molar ratio 1:1), epoxy resin, quartz powder and talc are respectively converted to 9.3 parts, 10.7 parts, 6.7 parts, 2.7 parts, 4 parts and 20 parts in accordance with the amount of the base asphalt described in example 1 of CN105111757A (100 parts) and the amount of the asphalt base in the above-described example 2 of the present application (750 parts);
and step 3: coating a tire base: drying the polyester felt base, and performing oil immersion treatment at 190 ℃; enabling the tire base soaked with the oil to enter a coating pool, and coating the modified asphalt prepared in the step (2) to two sides of the tire base at 180 ℃, wherein the coating thickness is 1.1mm of a lower modified asphalt layer and 0.9mm of an upper modified asphalt layer;
and 4, step 4: film pressing: coating modified asphalt on the base, cooling to 120 deg.C, and pressing with a laminator to obtain polyethylene film;
and 5: sand covering: and controlling the temperature of the modified asphalt layer on the waterproof roll to be 120 ℃, and uniformly covering ceramic sintered sand on the upper surface of the modified asphalt layer by using a sand covering machine, wherein the sand covering thickness is 1.0 mm.
Performance testing
The modified asphalt waterproofing membranes prepared in the above examples and comparative examples were tested with reference to the requirements associated with GB 18242-2008 "elastomer modified asphalt waterproofing membrane". The results are shown in Table 3 below:
table 3: results of measuring Properties of Water-repellent coil materials prepared in examples 2 to 4 and comparative examples 1 to 6
The test result shows that the waterproof coiled material prepared by modifying the asphalt matrix by adopting the composite modifier prepared from SBS and gutta percha under the crosslinking action of sulfur and polysulfide accords with the national detection standard, has excellent index performance, particularly excellent saline-alkali resistance, high and low temperature performance and good waterproof effect, and is particularly suitable for coastal areas and high saline-alkali areas.
Compared with the waterproof coiled materials of comparative examples 1-5, the modified asphalt waterproof coiled material has the advantages that the sulfur and polysulfide are used as the cross-linking agents to carry out cross-linking treatment on the mixture of SBS and gutta-percha, the obtained composite modifier can improve the compatibility of SDS, gutta-percha and matrix asphalt and improve various performances of the obtained asphalt composition, so that the prepared modified asphalt waterproof coiled material has better high and low temperature performances and good high elasticity and high viscosity, and is beneficial to the saline-alkali resistance and acid-alkali resistance of the waterproof coiled material. And the modified asphalt waterproof coiled material prepared by crosslinking SBS and gutta-percha without adopting sulfur and polysulfide or crosslinking a mixture of SBS and gutta-percha is poor in overall performance. The modified asphalt waterproof coiled material which is not added with the anti-salt and alkali agent or the anti-acid and alkali agent has poor saline-alkali resistance and acid-alkali resistance, and does not meet the national relevant standards.
In addition, the saline-alkali resistant waterproof roll material of comparative example 6, which was further produced using the modified asphalt prepared in CN105111757A, was greatly different from the waterproof roll materials of examples 2 to 4 of the present application in waterproof property, tensile force, elongation, acid-alkali resistance and saline-alkali resistance. Analysis suggests that this difference is mainly due to differences in the preparation methods. In CN105111757A, all the base asphalt and the other modified components except sulfur are heated, stirred uniformly, and then added with sulfur for shearing, because the amount of sulfur is very small relative to the amount of base asphalt, the modified components such as gutta percha and styrene copolymer are not crosslinked sufficiently, resulting in a non-tight structure of the obtained modified asphalt. In the method, partial asphalt matrix is vulcanized together with SBS and gutta-percha, and sulfur and polysulfide can be fully contacted with SBS, gutta-percha and asphalt matrix, so that cross-linking is very sufficient, a large-range three-dimensional network structure can be formed, and then the residual asphalt matrix is added and filled in the three-dimensional network structure, so that the obtained modified asphalt structure is more compact and has more excellent waterproof performance; on the basis of the excellent waterproof performance, the acid and alkali resistant agent and the salt and alkali resistant agent are matched, so that the acid and alkali resistant performance and the salt and alkali resistant performance are also excellent.
The above description is not intended to limit the present application, nor is the present application limited to the above examples. Those skilled in the art should also realize that changes, modifications, additions and substitutions can be made without departing from the true spirit and scope of the application, which is limited only by the claims.
Claims (14)
1. A salt and alkali resistant three-dimensional colorful decorative waterproof coiled material comprises a base, an upper salt and alkali resistant modified asphalt layer and a lower salt and alkali resistant modified asphalt layer which are arranged on the upper surface and the lower surface of the base, a colorful covering layer arranged on one side, far away from the base, of the upper salt and alkali resistant modified asphalt layer, and an isolation layer arranged on one side, far away from the base, of the lower salt and alkali resistant modified asphalt layer;
the saline-alkali resistant modified asphalt layer comprises the following raw materials in parts by weight:
wherein the composite modifier comprises the following raw materials in parts by weight: SBS: 45 parts of eucommia ulmoides gum: 45 parts, sulfur: 4 parts, polysulfide: 6 parts of (1);
the preparation method of the composite modifier comprises the following steps: and heating SBS and gutta-percha to 180 ℃ under stirring, adding the same weight parts of base asphalt prepared by uniformly stirring 100# asphalt and 10# asphalt at 180 ℃ under 170 ℃ according to the raw material proportion in the saline-alkali resistant modified asphalt, uniformly mixing, adding sulfur and polysulfide under stirring, and keeping for 10-30 minutes to obtain the modified asphalt.
2. A salt and alkali resistant three-dimensional colorful decorative waterproof coiled material comprises a base, an upper salt and alkali resistant modified asphalt layer and a lower salt and alkali resistant modified asphalt layer which are arranged on the upper surface and the lower surface of the base, a colorful covering layer arranged on one side, far away from the base, of the upper salt and alkali resistant modified asphalt layer, and an isolation layer arranged on one side, far away from the base, of the lower salt and alkali resistant modified asphalt layer;
the saline-alkali resistant modified asphalt layer comprises the following raw materials in parts by weight:
wherein the composite modifier comprises the following raw materials in parts by weight: SBS: 50 parts of eucommia ulmoides gum: 50 parts, sulfur: 5 parts, polysulfide: 5 parts of a mixture;
the preparation method of the composite modifier comprises the following steps: and heating SBS and gutta-percha to 180 ℃ under stirring, adding the same weight parts of base asphalt prepared by uniformly stirring 100# asphalt and 10# asphalt at 180 ℃ under 170 ℃ according to the raw material proportion in the saline-alkali resistant modified asphalt, uniformly mixing, adding sulfur and polysulfide under stirring, and keeping for 10-30 minutes to obtain the modified asphalt.
3. A salt and alkali resistant three-dimensional colorful decorative waterproof coiled material comprises a base, an upper salt and alkali resistant modified asphalt layer and a lower salt and alkali resistant modified asphalt layer which are arranged on the upper surface and the lower surface of the base, a colorful covering layer arranged on one side, far away from the base, of the upper salt and alkali resistant modified asphalt layer, and an isolation layer arranged on one side, far away from the base, of the lower salt and alkali resistant modified asphalt layer;
the saline-alkali resistant modified asphalt layer comprises the following raw materials in parts by weight:
wherein the composite modifier comprises the following raw materials in parts by weight: SBS: 40 parts of eucommia ulmoides gum: 40 parts, sulfur: 6 parts, polysulfide: 4 parts of a mixture;
the preparation method of the composite modifier comprises the following steps: and heating SBS and gutta-percha to 180 ℃ under stirring, adding the same weight parts of base asphalt prepared by uniformly stirring 100# asphalt and 10# asphalt at 180 ℃ under 170 ℃ according to the raw material proportion in the saline-alkali resistant modified asphalt, uniformly mixing, adding sulfur and polysulfide under stirring, and keeping for 10-30 minutes to obtain the modified asphalt.
4. The halokali-tolerant three-dimensional multicolor decorative waterproof roll material according to any one of claims 1 to 3, wherein the base is a polyester felt, a glass fiber felt or a glass fiber reinforced polyester felt;
the softening oil is selected from one or more of a mixture of reduced line oil, furfural extract oil, aromatic oil and naphthenic oil;
the filler is selected from one or a mixture of more of talcum powder, heavy calcium carbonate, mica powder, bentonite, calcium silicate powder and kaolin;
the isolating layer is a polyethylene film;
the color covering layer is ceramic sintered sand.
5. The halokali-tolerant three-dimensional multicolor decorative waterproof sheet material according to claim 4, wherein the polysulfide is selected from one or a mixture of two or three of tetramethylthiuram disulfide, dithiodimorpholine and dibenzothiazyl disulfide.
6. The alkali-tolerant three-dimensional multicolor decorative waterproof roll according to claim 5, wherein the alkali-tolerant agent is selected from one or two of sodium dihydrogen phosphate and dipotassium hydrogen phosphate;
the acid and alkali resistant agent is selected from one or a mixture of more of epoxy resin, tackifying resin and quartz powder.
7. The alkali-tolerant three-dimensional multicolor decorative waterproof roll according to claim 6, wherein the alkali-tolerant agent is a mixture of sodium dihydrogen phosphate and dipotassium hydrogen phosphate.
8. The alkali-tolerant three-dimensional multicolor decorative waterproof roll according to claim 7, wherein the molar ratio of sodium dihydrogen phosphate to dipotassium hydrogen phosphate is 1:5 to 5: 1.
9. The alkali-tolerant three-dimensional multicolor decorative waterproof roll according to claim 7, wherein the molar ratio of sodium dihydrogen phosphate to dipotassium hydrogen phosphate is 1: 1.
10. The salttolerant alkali three-dimensional multicolor decorative waterproof roll of claim 5, which further comprises a mixture of one or more selected from amorphous propylene copolymer (APAO), High Density Polyethylene (HDPE) and polypropylene (PP) as a reinforcing agent.
11. The method for preparing the salt and alkali resistant three-dimensional multicolor decorative waterproof roll material of any one of claims 1 to 10, comprising the following steps:
step 1: preparation of modified asphalt
1 a: heating 100# asphalt and 10# asphalt to 180 ℃ under stirring until the asphalt and the 10# asphalt are uniformly mixed to obtain base asphalt, and preserving heat for later use;
1 b: heating SBS and gutta-percha to 160-180 ℃ under stirring, adding the equal weight parts of the matrix asphalt prepared in the step 1a under stirring, uniformly mixing, adding sulfur and polysulfide under stirring, and keeping for 10-30 minutes;
1 c: adding the rest matrix asphalt, softening oil, anti-salt-alkali agent, anti-acid-alkali agent and optional reinforcing agent in sequence, stirring while adding until the mixture is uniform, finally adding filler and uniformly mixing, and discharging;
step 2: base coating
Drying the base and carrying out oil immersion treatment; enabling the tire base soaked with the oil to enter a coating pool, and coating the modified asphalt prepared in the step 1 to two sides of the tire base;
and step 3: film pressing
Coating modified asphalt on the base, cooling to the temperature of 100-120 ℃ of the lower modified asphalt layer, and pressing the isolation layer by using a laminator;
and 4, step 4: covering sand
The temperature of the modified asphalt layer on the waterproof roll is controlled to be 120-130 ℃, and the upper surface of the modified asphalt layer is uniformly covered with ceramic sintered sand by a sand covering machine.
12. The method as claimed in claim 11, wherein the temperature of the tire base oil immersion in the step 2 is 190-200 ℃ and the coating temperature of the modified asphalt is 180-190 ℃.
13. Use of the alkali-tolerant three-dimensional multicolor decorative waterproofing membrane according to any one of claims 1 to 10 in construction waterproofing, wherein the waterproofing membrane is constructed by a hot-melt method.
14. The use according to claim 13, wherein the waterproofing membrane is applied to coastal areas or areas with high saline and alkaline areas.
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| CN114657797A (en) * | 2022-03-29 | 2022-06-24 | 山东锦绣防水科技有限公司 | Waterproof coiled material and preparation method thereof |
| CN116285399B (en) * | 2023-03-10 | 2024-04-12 | 天津市禹神建筑防水材料有限公司 | Corrosion-resistant elastomer modified asphalt waterproof coiled material and preparation method thereof |
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| CN203449667U (en) * | 2013-07-17 | 2014-02-26 | 张连伟 | Saline-alkaline tolerance modified colored bituminous waterproof roll |
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