阅读说明：本技术 一种双胎基防水卷材及其制备方法 (Double-base waterproof coiled material and preparation method thereof ) 是由 郑宪明 韩春风 王晨 苑冰 于 2020-05-26 设计创作，主要内容包括：本发明涉及建筑材料技术领域,尤其涉及一种双胎基防水卷材及其制备方法。所述双胎基防水卷材的结构从上至下依次为：上表面隔离层、上层改性沥青胶、上层改性聚乙烯胎基、中间改性沥青胶、下层改性聚乙烯胎基、下层改性沥青胶、下表面隔离层。本发明的双胎基防水卷材强度大、延伸率大,解决了传统材质强度与延伸率之间的矛盾,且不透水性好、热稳定性优异,很好地保证了卷材的防水效果,本发明未添加任何再生物质,极大地提升了产品品质,提高了产品的使用寿命。(The invention relates to the technical field of building materials, in particular to a double-base waterproof coiled material and a preparation method thereof. The structure of two child base waterproofing membrane is from last to down being in proper order: the upper surface isolation layer, the upper modified asphalt mastic, the upper modified polyethylene base, the middle modified asphalt mastic, the lower modified polyethylene base, the lower modified asphalt mastic and the lower surface isolation layer. The double-base waterproof roll has high strength and high elongation, solves the contradiction between the strength and the elongation of the traditional material, has good water impermeability and excellent thermal stability, well ensures the waterproof effect of the roll, is not added with any regenerated substance, greatly improves the product quality, and prolongs the service life of the product.)

1. The utility model provides a two child base waterproofing membrane, its characterized in that, two child base waterproofing membrane's structure is from last to being down in proper order: the upper surface isolation layer, the upper modified asphalt mastic, the upper modified polyethylene base, the middle modified asphalt mastic, the lower modified polyethylene base, the lower modified asphalt mastic and the lower surface isolation layer.

2. The double-base waterproof roll as claimed in claim 1, wherein the upper surface isolation layer is a polyolefin elastomer film of 0.015 to 0.020mm, or a polyethylene silicone oil film of 0.038 to 0.045mm, or a sand surface of 30 to 60 mesh fine sand; the lower surface isolation layer is a polyolefin elastomer film with the thickness of 0.015-0.020 mm or a polyethylene silicon oil film with the thickness of 0.038-0.045 mm.

3. The double-base waterproof roll as claimed in claim 1 or 2, wherein the upper layer modified asphalt mastic, the middle modified asphalt mastic and the lower layer modified asphalt mastic each comprise the following components in parts by weight: 48-53 parts of petroleum asphalt, 8-11 parts of naphthenic rubber softening oil, 4-6 parts of SBS rubber, 3-5 parts of styrene butadiene rubber, 1-3 parts of butyl rubber, 1-3 parts of SIS rubber, 2-4 parts of polypropylene particles and 18-28 parts of stone powder.

4. The double-base waterproof roll according to claim 1 or 2, wherein the upper modified polyethylene base and the lower modified polyethylene base are both 0.09-0.15 mm modified high-density polyethylene bases.

5. The double-base waterproof roll as claimed in claim 3, wherein the glue preparation method of the modified asphalt mastic in the upper layer of modified asphalt mastic, the middle modified asphalt mastic and the lower layer of modified asphalt mastic comprises the following steps:

(1) mixing petroleum asphalt and naphthenic rubber softening oil, and then heating for the first time to 110-130 ℃ for 1-2 hours to obtain a mixture A;

(2) heating the mixture A for the second time after obtaining the mixture A, heating the mixture A to 160-170 ℃, and mixing the mixture A with butyl rubber, wherein the heating time is 20-40 min; continuing heating for the third time, heating to 190-200 ℃, and mixing for 50-70 min to obtain a mixture B;

(3) adding SBS rubber, styrene butadiene rubber and SIS rubber into the mixture B, and mixing for 1-2 h at constant temperature to obtain a mixture C;

(4) adding polypropylene particles into the mixture C, mixing for 1-2 h at constant temperature, and refining to obtain a mixture D;

(5) adding stone powder into the mixture D, mixing for 1-2 h at constant temperature, gelatinizing, and preserving heat to obtain the modified asphalt mastic.

6. The double-base waterproof roll material according to claim 5, wherein the rotation speed in the first temperature rise process in the step (1) is 120-130 r/min; in the step (2), the rotating speed of the mixture after the second temperature rise is 230-250 r/min, and the rotating speed of the mixture after the third temperature rise is 120-130 r/min.

7. The double-base waterproof roll according to claim 5 or 6, wherein the rotation speed of the mixing in the step (3) is 230 to 250 r/min; in the step (4), the rotating speed of the polypropylene particles is 120-130 r/min, and the rotating speed of the mixture after the polypropylene particles are added is 230-250 r/min.

8. The double-base waterproof roll material according to claim 5, wherein the rotation speed during the stone powder adding in the step (5) is 120-130 r/min, and the rotation speed of the mixture after the stone powder adding is 230-250 r/min; the temperature of heat preservation is 165-180 ℃.

9. A method for preparing a double-base waterproof roll material according to any one of claims 1 to 8, wherein the method comprises the following steps: the lower surface isolation layer, the lower layer modified asphalt mastic and the lower layer modified polyethylene base are formed by a double-roller pouring process, the middle modified asphalt mastic and the upper layer modified polyethylene base are formed by a double-roller pouring process, and the upper layer modified asphalt mastic and the upper surface isolation layer are formed by a blade coating process.

10. The preparation method of claim 9, wherein the long side of the upper surface separation layer is provided with a 6-12 cm overlapping edge.

Technical Field

The invention relates to the technical field of building materials, in particular to a double-base waterproof coiled material and a preparation method thereof.

Background

The modified asphalt waterproof coiled material is mainly used for waterproofing buildings, at present, the hot-melt construction waterproof coiled material commonly used in the building industry is mainly modified asphalt polyethylene base waterproof coiled material and SBS modified asphalt waterproof coiled material, and the pre-paved waterproof coiled material is mainly polyester base modified asphalt and macromolecule pre-paved P.

The SBS modified asphalt waterproof coiled material has the tensile strength of type II of 800N/5cm at most, the elongation of 40 percent, the water impermeability of 0.3MPa/30min and the thermal dimensional stability of less than or equal to 0.7 percent. The coiled material base is not waterproof, is easy to rot in underground environment, has low elongation, and can shrink slightly in the production process. During construction, the coiled material and the base layer cannot be fully adhered due to the fact that the coiled material is heated twice by fire and small shrinkage is generated by day and night temperature difference, a water channeling channel is formed, and the leakage rate is high.

The tensile strength of the modified asphalt polyethylene tire waterproof coiled material is more than or equal to 200N/5cm, the elongation is more than or equal to 120 percent, the water impermeability is 0.4MPa/120min, and the thermal dimensional stability is less than or equal to 2.5 percent. The coiled material matrix adopts common polyethylene as the matrix before, and has low strength, large elongation and poor thermal stability. The polyethylene can be melted at 120 ℃, the glue temperature can reach 160-180 ℃ during production, deformation can be generated, the temperature of the tire body can reach 130-150 ℃ when the tire body is heated instantly during hot melting construction, the temperature changes day and night after secondary heating, the coiled material bulges and cannot be fully adhered to a base surface, a water channeling channel is formed, and the leakage rate is high.

Besides the influence of the carcass on the waterproof performance of the coiled material, the modified asphalt rubber compound is also important for the waterproof effect. The asphalt in the asphalt sizing materials of the SBS modified asphalt waterproof coiled material and the modified asphalt polyethylene tire waterproof coiled material plays roles in sealing and bonding, and the rubber plays roles in improving the high-low temperature performance of the asphalt, improving the bonding strength and the like. However, most manufacturers in the industry reduce the asphalt amount by 30-35% when producing the rubber making ingredients, reduce the SBS rubber by 1-2%, add a part of regenerated rubber powder and regenerated used oil, and achieve the purposes of reducing the cost and meeting part of indexes. However, the modified asphalt rubber material has low adhesive force, poor aging resistance and large water-proof effect, and water channeling and water leakage often occur. The lap joint limit adhesion force is low after the hot melt construction, can not form full adhesion with the bonding of basic unit and easily produces scurry water, belongs to non-canned type waterproofing membrane, and has the weather resistance poor, and life is short, the high scheduling problem of seepage rate, in addition in case the seepage is difficult to restore.

Disclosure of Invention

The invention aims to provide a double-base waterproof roll and a preparation method thereof, the double-base waterproof roll has high strength and high elongation, solves the contradiction between the strength and the elongation of the traditional material, has good water impermeability and excellent thermal stability, and well ensures the waterproof effect of the roll.

In order to achieve the above object, the present invention provides the following technical solutions:

the invention provides a double-base waterproof roll, which sequentially comprises the following structures from top to bottom: the upper surface isolation layer, the upper modified asphalt mastic, the upper modified polyethylene base, the middle modified asphalt mastic, the lower modified polyethylene base, the lower modified asphalt mastic and the lower surface isolation layer.

Preferably, the upper surface isolation layer is a polyolefin elastomer film with the thickness of 0.015-0.020 mm, or a polyethylene silicon oil film with the thickness of 0.038-0.045 mm, or a sand surface consisting of 30-60 meshes of fine sand; the lower surface isolation layer is a polyolefin elastomer film with the thickness of 0.015-0.020 mm or a polyethylene silicon oil film with the thickness of 0.038-0.045 mm.

Preferably, the upper layer modified asphalt mastic, the middle modified asphalt mastic and the lower layer modified asphalt mastic comprise the following components in parts by weight: 48-53 parts of petroleum asphalt, 8-11 parts of naphthenic rubber softening oil, 4-6 parts of SBS rubber, 3-5 parts of styrene butadiene rubber, 1-3 parts of butyl rubber, 1-3 parts of SIS rubber, 2-4 parts of polypropylene particles and 18-28 parts of stone powder.

Preferably, the upper modified polyethylene base and the lower modified polyethylene base are both modified high-density polyethylene bases with the thickness of 0.09-0.15 mm.

Preferably, the rubber preparation method of the modified asphalt mastic in the upper layer of modified asphalt mastic, the middle layer of modified asphalt mastic and the lower layer of modified asphalt mastic comprises the following steps:

(1) mixing petroleum asphalt and naphthenic rubber softening oil, and then heating for the first time to 110-130 ℃ for 1-2 hours to obtain a mixture A;

(2) heating the mixture A for the second time after obtaining the mixture A, heating the mixture A to 160-170 ℃, and mixing the mixture A with butyl rubber, wherein the heating time is 20-40 min; continuing heating for the third time, heating to 190-200 ℃, and mixing for 50-70 min to obtain a mixture B;

(3) adding SBS rubber, styrene butadiene rubber and SIS rubber into the mixture B, and mixing for 1-2 h at constant temperature to obtain a mixture C;

(4) adding polypropylene particles into the mixture C, mixing for 1-2 h at constant temperature, and refining to obtain a mixture D;

(5) adding stone powder into the mixture D, mixing for 1-2 h at constant temperature, gelatinizing, and preserving heat to obtain the modified asphalt mastic.

Preferably, the rotating speed in the first temperature rise process in the step (1) is 120-130 r/min; in the step (2), the rotating speed of the mixture after the second temperature rise is 230-250 r/min, and the rotating speed of the mixture after the third temperature rise is 120-130 r/min.

Preferably, the rotation speed of the mixing in the step (3) is 230-250 r/min; in the step (4), the rotating speed of the polypropylene particles is 120-130 r/min, and the rotating speed of the mixture after the polypropylene particles are added is 230-250 r/min.

Preferably, the rotation speed of adding the stone powder in the step (5) is 120-130 r/min, and the rotation speed of mixing after adding is 230-250 r/min; the temperature of heat preservation is 165-180 ℃.

The invention also provides a preparation method of the double-base waterproof roll, which comprises the following steps: the lower surface isolation layer, the lower layer modified asphalt mastic and the lower layer modified polyethylene base are formed by a double-roller pouring process, the middle modified asphalt mastic and the upper layer modified polyethylene base are formed by a double-roller pouring process, and the upper layer modified asphalt mastic and the upper surface isolation layer are formed by a blade coating process.

Preferably, the long edge of the upper surface isolation layer is provided with a 6-12 cm overlapping edge.

The invention has the beneficial effects that:

(1) the double-base waterproof coiled material has high tensile strength and high elongation, successfully solves the contradiction between the strength and the elongation of the traditional material, and has the advantages of high strength of SBS coiled materials and super-long extensibility of polyethylene base: the tensile force of the coiled material is more than or equal to 600N/5cm, the elongation of the coiled material is more than 150 percent and is more than the national standard index (more than or equal to 120 percent) of the original polyethylene tire coiled material.

(2) The formula of the double-base waterproof roll material disclosed by the invention does not contain any regenerated substance, so that the product quality is greatly improved, the service life of the double-base waterproof roll material is 2-3 times that of the traditional asphalt waterproof roll material, and the service life of underground engineering can be as long as that of a building.

(3) The double-base waterproof roll has double water pressure penetration resistance, and the water impermeability of the roll is 0.8MPa/120min, which is more than 2 times that of the traditional waterproof roll. The corrosion resistance and the chloride ion permeability resistance are excellent, wherein the content of the rubber accounts for 12-15% of the total amount, and the regenerated substances are added in a zero way, so that the colloid of the coiled material is fine and compact, and in addition, the double-layer modified polyethylene material base with extremely high corrosion resistance is obtained, and the extremely excellent corrosion resistance and the chloride ion permeability resistance of the product are achieved. The physical and chemical indexes of the product are not affected even if the product is soaked in a saturated saline solution (NaCl), a 10% alkali solution (NaOH) or a 20% acid solution (HCl) for a long time.

(4) The double-base waterproof coiled material has stable thermal dimension change, the base of the product is made of modified polyethylene, the actually measured average value of the thermal dimension stability is less than or equal to 1.5%, and the performance of the double-base waterproof coiled material is superior to that of the traditional polyethylene base coiled material. The defect of poor thermal dimensional stability of the traditional ethylene tire coiled material is overcome, the phenomena of serious wrinkles, bulging and edge warping of the waterproof layer caused by temperature change are avoided, and the waterproof effect is ensured.

(5) The double-base waterproof coiled material has safe and reliable construction waterproof performance, the hot-melt welding quality of the waterproof lap of the coiled material is the primary waterproof safety barrier of the waterproof layer of the coiled material, the lap peeling strength of the polyethylene double-base waterproof coiled material can reach 3.0N/mm at most and is more than 2-3 times of the lap peeling strength of the existing common asphalt-base coiled material, and the waterproof lap of the coiled material is safer and more reliable.

Drawings

FIG. 1 is a schematic structural view of a double-base waterproofing roll according to the present invention;

fig. 2 is a schematic structural diagram of the pair-roller pouring device of the invention.

Detailed Description

The invention provides a double-base waterproof roll, which sequentially comprises the following structures from top to bottom: the upper surface isolation layer, the upper modified asphalt mastic, the upper modified polyethylene base, the middle modified asphalt mastic, the lower modified polyethylene base, the lower modified asphalt mastic and the lower surface isolation layer.

In the invention, the upper surface isolation layer is preferably a 0.015-0.020 mm polyolefin elastomer film, or a 0.038-0.045 mm polyethylene silicon oil film, or a sand surface consisting of 30-60 meshes of fine sand, and is further preferably a 0.018-0.020 mm polyolefin elastomer film, or a 0.040-0.045 mm polyethylene silicon oil film, or a sand surface consisting of 40-50 meshes of fine sand.

In the invention, the lower surface isolation layer is preferably a 0.015-0.020 mm polyolefin elastomer film or a 0.038-0.045 mm polyethylene silicon oil film, and is further preferably a 0.018-0.020 mm polyolefin elastomer film or a 0.040-0.045 mm polyethylene silicon oil film.

In the invention, the upper layer modified asphalt mastic, the middle modified asphalt mastic and the lower layer modified asphalt mastic preferably comprise the following components in parts by weight: 48-53 parts of petroleum asphalt, 8-11 parts of naphthenic rubber softening oil, 4-6 parts of SBS rubber, 3-5 parts of styrene butadiene rubber, 1-3 parts of butyl rubber, 1-3 parts of SIS rubber, 2-4 parts of polypropylene particles and 18-28 parts of stone powder; further preferably comprises the following components in parts by weight: 50-53 parts of petroleum asphalt, 10-11 parts of naphthenic rubber softening oil, 5 parts of SBS rubber, 4 parts of styrene butadiene rubber, 3 parts of butyl rubber, 2 parts of SIS rubber, 3 parts of polypropylene particles and 20-28 parts of stone powder.

In the present invention, the petroleum asphalt is preferably commercially available No. 90 petroleum asphalt.

In the invention, the total mass of the SBS rubber, the styrene-butadiene rubber, the butyl rubber and the SIS rubber is preferably 12-15% of the total mass of the modified asphalt rubber, and is further preferably 13-14% of the total mass of the modified asphalt rubber.

In the present invention, the SBS rubber is styrene-butadiene-styrene block copolymer rubber.

In the present invention, the particle size of the styrene-butadiene rubber is preferably <20 mesh, and more preferably <15 mesh.

In the present invention, the particle size of the butyl rubber is preferably 1 to 2cm, and more preferably 1.5 to 2 cm.

In the present invention, the SIS rubber is a styrene-isoprene-styrene block copolymer rubber.

In the invention, the stone powder is talcum powder, and the granularity of the talcum powder is preferably 100-300 meshes, and is further preferably 150-200 meshes.

The main component of the modified asphalt rubber is petroleum asphalt, and SBS rubber, styrene butadiene rubber, butyl rubber and SIS rubber are added, so that the performance of the modified asphalt is improved. The four rubbers can be uniformly dispersed in the asphalt to form a three-dimensional network structure to play a complementary role, the content of the four components plays an important role in the performance of the modified asphalt sizing material, the high-temperature performance, the low-temperature performance and the elasticity of the asphalt can be obviously improved, and the cohesion, the viscosity, the acid and alkali resistance and the weather resistance of the asphalt sizing material of the coiled material bonding layer are increased. The high-content rubber is not easy to dissolve in asphalt, the naphthenic base rubber softening oil for assisting dissolution is added, so that the high-content rubber can fully play a role, and the thermal stability of the modified asphalt mastic is improved by adding the polypropylene particles.

In the invention, the upper layer modified polyethylene base and the lower layer modified polyethylene base are both preferably modified high-density polyethylene bases with the thickness of 0.09-0.15 mm, and more preferably modified high-density polyethylene bases with the thickness of 0.10-0.13 mm.

In the present invention, the method for preparing the modified asphalt mastic in the upper layer of modified asphalt mastic, the middle layer of modified asphalt mastic and the lower layer of modified asphalt mastic preferably comprises the following steps:

(1) mixing petroleum asphalt and naphthenic rubber softening oil, and then heating for the first time to 110-130 ℃ for 1-2 hours to obtain a mixture A;

(2) heating the mixture A for the second time after obtaining the mixture A, heating the mixture A to 160-170 ℃, and mixing the mixture A with butyl rubber, wherein the heating time is 20-40 min; continuing heating for the third time, heating to 190-200 ℃, and mixing for 50-70 min to obtain a mixture B;

(3) adding SBS rubber, styrene butadiene rubber and SIS rubber into the mixture B, and mixing for 1-2 h at constant temperature to obtain a mixture C;

(4) adding polypropylene particles into the mixture C, mixing for 1-2 h at constant temperature, and refining to obtain a mixture D;

(5) adding stone powder into the mixture D, mixing for 1-2 h at constant temperature, gelatinizing, and preserving heat to obtain modified asphalt mastic;

further preferably comprising the steps of:

(1) mixing petroleum asphalt and naphthenic rubber softening oil, and then heating for the first time to 120 ℃ for 1.5 hours to obtain a mixture A;

(2) heating the mixture A for the second time after obtaining the mixture A, heating the mixture A to 165 ℃, and mixing the mixture A with butyl rubber, wherein the heating time is 30 min; continuing to heat for the third time, heating to 195 ℃, and mixing for 60min to obtain a mixture B;

(3) adding SBS rubber, styrene butadiene rubber and SIS rubber into the mixture B, and mixing for 1.5h without changing the temperature to obtain a mixture C;

(4) adding polypropylene particles into the mixture C, mixing for 1.5h at constant temperature, and refining to obtain a mixture D;

(5) adding stone powder into the mixture D, mixing for 1.5h at constant temperature to form gel, and keeping the temperature to obtain the modified asphalt mastic.

In the invention, the rotation speed in the first temperature rise process in the step (1) is preferably 120-130 r/min, and more preferably 125 r/min.

In the invention, the butyl rubber in the step (2) is preferably pre-cut into 1cm in diameter, softened by naphthenic rubber softening oil at 195 ℃ for 60min, refined by a colloid mill and then re-dispersed in asphalt, which is beneficial to improving the compatibility of rubber and solving the problems of solubility and uniformity during processing of high-content rubber modified asphalt.

In the invention, the rotation speed of the mixing after the second temperature rise in the step (2) is preferably 230 to 250r/min, more preferably 240r/min, and the rotation speed of the mixing after the third temperature rise is preferably 120 to 130r/min, more preferably 125 r/min.

In the invention, the rotation speed of the mixing in the step (3) is preferably 230-250 r/min, and more preferably 240 r/min; the rotation speed when the polypropylene particles are added in the step (4) is preferably 120-130 r/min, more preferably 125r/min, and the rotation speed of mixing after the addition is preferably 230-250 r/min, more preferably 240 r/min.

In the invention, the rotation speed during adding the stone powder in the step (5) is preferably 120-130 r/min, more preferably 125r/min, and the rotation speed of mixing after adding is preferably 230-250 r/min, more preferably 240 r/min; the temperature of the heat preservation is preferably 165-180 ℃, and further preferably 168-180 ℃.

In the present invention, the temperature of the heat-retaining in the step (5) may also preferably be: 165-175 ℃ in summer and 175-180 ℃ in winter.

But modified asphalt glue film forms after the hot melt and glues with the basic unit, and bonding strength is high for two child base waterproofing membrane, effectively improves the bonding sealing performance of two child base waterproofing membrane and basic unit, avoids because of the waterproof engineering seepage phenomenon that the bonding effect of coiled material and basic unit is poor and cause.

The invention also provides a preparation method of the double-base waterproof roll, which comprises the following steps: the lower surface isolation layer, the lower layer modified asphalt mastic and the lower layer modified polyethylene base are formed by a double-roller pouring process, the middle modified asphalt mastic and the upper layer modified polyethylene base are formed by a double-roller pouring process, and the upper layer modified asphalt mastic and the upper surface isolation layer are formed by a blade coating process.

In the invention, the long edge of the upper surface isolation layer is preferably provided with a 6-12 cm overlapping edge, and further preferably provided with a 10cm overlapping edge.

The following will explain in detail a dual-base waterproofing membrane and a method for manufacturing the same according to the present invention with reference to the following examples, but they should not be construed as limiting the scope of the present invention.