CN116082738B - Waterproof high polymer material and composite waterproof coiled material as well as preparation method and application thereof - Google Patents
Waterproof high polymer material and composite waterproof coiled material as well as preparation method and application thereof Download PDFInfo
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/241—Polyolefin, e.g.rubber
- C09J7/243—Ethylene or propylene polymers
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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- C08J2323/06—Polyethene
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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- C08J2423/08—Copolymers of ethene
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- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
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- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/124—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
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- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
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- C09J2423/00—Presence of polyolefin
- C09J2423/04—Presence of homo or copolymers of ethene
- C09J2423/046—Presence of homo or copolymers of ethene in the substrate
Abstract
The invention belongs to the technical field of waterproof materials, and particularly relates to a waterproof polymer material, a composite waterproof coiled material, a preparation method and application thereof. The waterproof high polymer material provided by the invention: 35-50 parts of ultra-high molecular weight polyethylene; 25-30 parts of linear low-density polyethylene; 15-20 parts of metallocene polyethylene; 5-10 parts of an inorganic filler; 3-5 parts of a dispersing agent; the number average molecular weight of the ultra-high molecular weight polyethylene is more than or equal to 150 ten thousand; the dispersing agent is an organic wax. The invention takes the ultra-high molecular weight polyethylene as the main material, the main material has larger molecular weight, thus having longer molecular chains, entanglement can be necessarily generated among the molecular chains, the tensile strength, the breaking elongation and the environmental stress cracking resistance of the waterproof high molecular material are improved, the tensile strength, the breaking elongation and the waterproof pressure of the obtained composite waterproof coiled material are obviously improved, the interlayer water channeling hidden trouble can be effectively avoided, and the waterproof coiled material is applicable to ultra-deep underground engineering.
Description
Technical Field
The invention belongs to the technical field of waterproof materials, and particularly relates to a waterproof polymer material, a composite waterproof coiled material, a preparation method and application thereof.
Background
Along with the continuous promotion of the urban process, the underground space is an important premise for sustainable development of cities, and is the front edge of urban disaster prevention toughness. The development of the underground space in the future is towards large span, deep burial, complex structure and the like, while ultra-deep underground engineering is deeper and more complex underground engineering.
The underground engineering is in the surrounding of the underground water for a long time, if no waterproof measure exists, or the waterproof measure exists but the waterproof effect is poor, the underground water can infiltrate into the building structure, so that the use of the underground engineering is affected, concrete corrosion, steel bar rust and foundation subsidence can be caused, and the safety of the underground engineering is directly endangered. The geological condition of the ultra-deep underground structure is complex, the ultra-deep underground structure is usually in the environment of high water pressure and high sedimentation deformation, and the selection and application of the waterproof material are related to the construction quality of the whole project and the safety and durability of the whole underground structure.
At present, the common waterproof material has poor tensile strength, elongation at break and water impermeability (0.3 mpa,120 min) and is difficult to adapt to special geological conditions of ultra-deep underground engineering.
Disclosure of Invention
The invention aims to provide a waterproof polymer material, a composite waterproof coiled material, a preparation method and application thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a waterproof high polymer material which comprises the following components in parts by weight:
35-50 parts of ultra-high molecular weight polyethylene;
25-30 parts of linear low-density polyethylene;
15-20 parts of metallocene polyethylene;
5-10 parts of an inorganic filler;
3-5 parts of a dispersing agent;
the number average molecular weight of the ultra-high molecular weight polyethylene is more than or equal to 150 ten thousand;
the dispersing agent is an organic wax.
Preferably, the number average molecular weight of the ultra-high molecular weight polyethylene is 150-250 ten thousand; the ultra-high molecular weight polyethylene is linear polyethylene.
Preferably, the linear low density polyethylene has a melt index of 1.5-2.5 g/10min and a density of 0.91-0.93 g/cm 3 。
Preferably, the melt index of the metallocene polyethylene is 2.5-3.5 g/10min, and the density is 0.91-0.92 g/cm 3 。
Preferably, the inorganic filler is one or more of glass beads, glass fiber powder, mica powder and talcum powder;
the particle size of the inorganic filler is 20-35 mu m.
Preferably, the dispersing agent is montan wax and/or polyethylene wax; the density of the dispersing agent is 0.9-0.95g/cm 3 The molecular weight is 1500-3500.
The invention provides a composite waterproof coiled material, which comprises a waterproof polymer sheet; the waterproof polymer sheet material is made of the waterproof polymer material according to the technical scheme;
sequentially stacking a first hot-melt pressure-sensitive adhesive layer and an isolation sand layer which are arranged on one surface of the waterproof polymer sheet;
and the second hot-melt pressure-sensitive adhesive layer and the isolating film layer are sequentially laminated on the other surface of the waterproof polymer sheet.
Preferably, the thickness of the waterproof polymer sheet is 1.5-2 mm; the thickness of the first hot-melt pressure-sensitive adhesive layer and the second hot-melt pressure-sensitive adhesive layer is independently 0.5-1 mm; the thickness of the isolation sand layer is 0.2-0.5 mm; the thickness of the isolation film layer is 0.035-0.045 mm.
The invention provides a preparation method of a composite waterproof coiled material, which is characterized in that the composite waterproof coiled material is prepared by the technical scheme;
the method comprises the following steps:
carrying out corona treatment on two surfaces of the waterproof polymer sheet to obtain the waterproof polymer sheet subjected to corona treatment;
sequentially coating a first hot-melt pressure-sensitive adhesive layer and a sand isolation layer on one surface of the corona-treated waterproof polymer sheet, and then carrying out first roll forming to obtain a semi-finished coiled material;
and (3) coating a second hot-melt pressure-sensitive adhesive layer and a separation film layer on the other surface of the semi-finished coiled material in sequence, and then carrying out second roll forming to obtain the composite waterproof coiled material.
The invention provides an application of a composite waterproof coiled material in ultra-deep underground engineering, wherein the composite waterproof coiled material is prepared by the composite waterproof coiled material according to the technical scheme or the preparation method according to the technical scheme.
The invention provides a waterproof high polymer material which comprises the following components in parts by weight: 35-50 parts of ultra-high molecular weight polyethylene; 25-30 parts of linear low-density polyethylene; 15-20 parts of metallocene polyethylene; 5-10 parts of an inorganic filler; 3-5 parts of a dispersing agent; the number average molecular weight of the ultra-high molecular weight polyethylene is more than or equal to 150 ten thousand; the dispersing agent is an organic wax. The waterproof high polymer material provided by the invention is compounded by three polyethylene resins of ultrahigh molecular weight polyethylene, linear low density polyethylene and metallocene polyethylene, wherein the ultrahigh molecular weight polyethylene with the number average molecular weight of more than or equal to 150 ten thousand is used as a main material, the main material has longer molecular chains, entanglement is necessarily generated among the molecular chains, meanwhile, entanglement is generated with the molecular chains of the linear low density polyethylene and the metallocene polyethylene, the aggregation state structure of the ultrahigh molecular weight polyethylene, the linear low density polyethylene and the metallocene polyethylene is tighter, and the tensile strength, the fracture elongation and the environmental stress cracking resistance of the waterproof high polymer material are improved; meanwhile, the hardness, the rigidity and the water impermeability of the waterproof high polymer material are further improved by adding the inorganic filler; the organic wax dispersing agent is added to have good compatibility with polyethylene resin, so that the processing performance and the processing efficiency of the waterproof high polymer material are improved.
The invention provides a composite waterproof coiled material, which comprises a waterproof polymer sheet; the waterproof polymer sheet material is made of the waterproof polymer material according to the technical scheme; sequentially stacking a first hot-melt pressure-sensitive adhesive layer and an isolation sand layer which are arranged on one surface of the waterproof polymer sheet; and the second hot-melt pressure-sensitive adhesive layer and the isolating film layer are sequentially laminated on the other surface of the waterproof polymer sheet. The composite waterproof coiled material provided by the invention takes the sheet material of the waterproof polymer material as a central structure, adopts a sandwich structure, adheres the isolation sand and the isolation film on the two surfaces of the waterproof polymer sheet material through the hot-melt pressure-sensitive adhesive layer, and not only forms a protective surface layer for the waterproof polymer sheet material through the isolation film and the isolation sand, but also is in post-pouring concrete contact with the isolation sand layer of the composite waterproof coiled material, improves the peeling strength of the composite waterproof coiled material and the post-pouring concrete through the isolation sand, avoids the hidden danger of interlayer channeling, and is suitable for ultra-deep underground engineering.
The invention provides a preparation method of a composite waterproof coiled material, which is characterized in that the composite waterproof coiled material is prepared by the technical scheme; the method comprises the following steps: carrying out corona treatment on two surfaces of the waterproof polymer sheet to obtain the waterproof polymer sheet subjected to corona treatment; sequentially coating a first hot-melt pressure-sensitive adhesive layer and a sand isolation layer on one surface of the corona-treated waterproof polymer sheet, and then carrying out first roll forming to obtain a semi-finished coiled material; and (3) coating a second hot-melt pressure-sensitive adhesive layer and a separation film layer on the other surface of the semi-finished coiled material in sequence, and then carrying out second roll forming to obtain the composite waterproof coiled material. According to the invention, through corona treatment on the two surfaces of the central waterproof polymer sheet, oxidation polarization groups are formed on the two surfaces of the waterproof polymer sheet, so that the two surfaces of the waterproof polymer sheet generate polarity, the bonding and adsorption of the hot-melt pressure-sensitive adhesive layer are facilitated, and then the rolling forming is adopted respectively, so that the gapless combination of the polymer sheet and the hot-melt pressure-sensitive adhesive, the hot-melt pressure-sensitive adhesive and the isolation sand, the isolation film and the composite waterproof coiled material and the concrete is improved, the interlayer water channeling hidden danger is avoided, and the waterproof sheet is suitable for ultra-deep underground engineering.
Drawings
Fig. 1 is a flowchart of preparing a waterproof polymer sheet according to an embodiment of the present invention;
fig. 2 is a flowchart of preparing a composite waterproof roll according to an embodiment of the present invention.
Detailed Description
The invention provides a waterproof high polymer material which comprises the following components in parts by weight:
35-50 parts of ultra-high molecular weight polyethylene;
25-30 parts of linear low-density polyethylene;
15-20 parts of metallocene polyethylene;
5-10 parts of an inorganic filler;
3-5 parts of a dispersing agent;
the number average molecular weight of the ultra-high molecular weight polyethylene is more than or equal to 150 ten thousand;
the dispersing agent is an organic wax.
In the present invention, all preparation materials/components are commercially available products well known to those skilled in the art unless specified otherwise.
The waterproof high polymer material provided by the invention comprises, by mass, 35-50 parts of ultra-high molecular weight polyethylene (PE-UHMW), preferably 36-48 parts, and more preferably 38-45 parts.
In the present invention, the ultra-high molecular weight polyethylene preferably has a number average molecular weight of 150 to 250 ten thousand, more preferably 155 to 245 ten thousand, and still more preferably 160 to 240 ten thousand.
In the present invention, the ultra-high molecular weight polyethylene is a linear polyethylene.
In a specific embodiment of the present invention, the ultra-high molecular weight polyethylene is specifically preferably a basic SLL-G resin manufactured by Shanghai-Bile chemical engineering Co., ltd.
In the invention, the molecular structure of the ultra-high molecular weight polyethylene is basically the same as that of the common polyethylene structural monomer, but the number average molecular weight of the ultra-high molecular weight polyethylene exceeds 150 ten thousand, entanglement is necessarily generated among molecular chains due to the chain length of the molecules, the aggregation state structure is also changed along with the entanglement, and the tensile strength, the fracture elongation, the environmental stress fracture resistance and the like of the ultra-high molecular weight polyethylene are far higher than those of the common polyethylene.
Based on the mass parts of the ultra-high molecular weight polyethylene, the waterproof high polymer material provided by the invention comprises 25-30 parts of Linear Low Density Polyethylene (LLDPE), preferably 26-29 parts, and more preferably 27-28 parts.
In the invention, the melt index of the linear low-density polyethylene is preferably 1.5-2.5 g/10min, and more preferably 1.6-2.3 g/10min; the density of the linear low density polyethylene is preferably 0.91-0.93 g/cm 3 。
In a specific embodiment of the present invention, the linear low density polyethylene is specifically preferably LLDPE 7042 or LLDPE 9047; the LLDPE 7042 or LLDPE 9047 is preferably purchased from Yangzi petrochemical, daqing petrochemical or Qilu petrochemical.
Based on the mass parts of the ultra-high molecular weight polyethylene, the waterproof high polymer material provided by the invention comprises 15-20 parts of metallocene polyethylene, preferably 16-19 parts, and more preferably 17-18 parts.
In the invention, the melt index of the Metallocene Polyethylene (MPE) is preferably 2.5-3.5 g/10min, more preferably 2.8-3.2 g/10min; the density of the metallocene polyethylene is preferably 0.91-0.92 g/cm 3 。
In a specific embodiment of the invention, the metallocene polyethylene is particularly preferably 3518CB and/or 3518PA produced by exxon chemical.
Based on the mass parts of the ultra-high molecular weight polyethylene, the waterproof high polymer material provided by the invention comprises 5-10 parts of inorganic filler, preferably 6-9 parts, and more preferably 7-8 parts.
In the present invention, the inorganic filler is preferably one or more of glass beads, glass fiber powder, mica powder and talc.
In the present invention, the particle size of the inorganic filler is 20 to 35. Mu.m.
In the present invention, the inorganic filler is more preferably an oversize product of a 600 mesh sieve and an undersize product of a 500 mesh sieve.
In the present invention, the inorganic filler can improve the hardness, rigidity and temperature resistance of the waterproof polymer material.
Based on the mass parts of the ultra-high molecular weight polyethylene, the waterproof high polymer material provided by the invention comprises 3-5 parts of dispersing agent, preferably 3.5-4.5 parts.
In the present invention, the dispersant is preferably montan wax and/or polyethylene wax.
In the invention, the density of the dispersing agent is preferably 0.9-0.95g/cm 3 。
In the present invention, the molecular weight of the dispersant is preferably 1500 to 3500, more preferably 1800 to 3200, and even more preferably 2000 to 3000.
In the invention, the dispersing agent has good compatibility with polyethylene resin, and the processing performance and processing efficiency of ultra-high molecular weight polyethylene (PE-UHMW) are improved.
The invention provides a composite waterproof coiled material, which comprises a waterproof polymer sheet; the waterproof polymer sheet material is made of the waterproof polymer material according to the technical scheme;
sequentially stacking a first hot-melt pressure-sensitive adhesive layer and an isolation sand layer which are arranged on one surface of the waterproof polymer sheet;
and the second hot-melt pressure-sensitive adhesive layer and the isolating film layer are sequentially laminated on the other surface of the waterproof polymer sheet.
The composite waterproof coiled material provided by the invention comprises a waterproof polymer sheet; the waterproof polymer sheet material is made of the waterproof polymer material according to the technical scheme. In the invention, the thickness of the waterproof polymer sheet is preferably 1.5-2 mm, more preferably 1.6-1.8 mm.
The composite waterproof coiled material provided by the invention comprises a first hot-melt pressure-sensitive adhesive layer arranged on one surface of the waterproof polymer sheet.
In the invention, the thickness of the first hot-melt pressure-sensitive adhesive layer is preferably 0.5-1 mm, more preferably 0.6-0.8 mm.
In the present invention, the first hot-melt pressure-sensitive adhesive layer is preferably a SBS or SIS series hot-melt pressure-sensitive adhesive.
In a specific embodiment of the present invention, the first hot melt pressure sensitive adhesive layer is specifically preferably XT-130F manufactured by Guangdong New Material technology Co., ltd. The XT-130F has the advantages of good coating performance, high bonding strength and excellent environmental protection performance.
The composite waterproof coiled material provided by the invention comprises an isolation sand layer arranged on the surface of the first hot-melt pressure-sensitive adhesive layer.
In the invention, the thickness of the isolation sand layer is preferably 0.2-0.5 mm, more preferably 0.3-0.4 mm.
In the present invention, the insulating sand layer is preferably a silica sand layer, and in a specific embodiment of the present invention, the insulating sand layer is preferably silica sand produced by a Huixin mining industry processing factory in Lingxiang county.
In the invention, the sand isolation layer has the functions of isolating and protecting the surface of the coiled material and reacting and bonding with post-cast concrete.
The invention provides a composite waterproof coiled material which comprises a second hot-melt pressure-sensitive adhesive layer arranged on the other surface of a waterproof polymer sheet.
In the invention, the thickness of the second hot-melt pressure-sensitive adhesive layer is preferably 0.5-1 mm, more preferably 0.6-0.8 mm.
In the present invention, the second hot-melt pressure-sensitive adhesive layer is preferably a SBS or SIS series hot-melt pressure-sensitive adhesive.
In a specific embodiment of the present invention, the second hot melt pressure sensitive adhesive layer is specifically preferably XT-130F manufactured by Guangdong New Material technology Co., ltd. The XT-130F has the advantages of good coating performance, high bonding strength and excellent environmental protection performance.
The invention provides a composite waterproof coiled material which comprises an isolating film layer arranged on the surface of a second hot-melt pressure-sensitive adhesive layer.
In the present invention, the thickness of the isolation film layer is preferably 0.035 to 0.045mm, more preferably 0.036 to 0.042.
In the present invention, the release film layer is preferably a polyester release film (PET). In a specific embodiment of the present invention, the isolating film layer is specifically preferably a polyester release film (PET) manufactured by hebei plastic industry limited.
In the invention, the isolating film layer is used as a cushion layer and is used for isolating.
The invention provides a preparation method of a composite waterproof coiled material, which is characterized in that the composite waterproof coiled material is prepared by the technical scheme;
the method comprises the following steps:
carrying out corona treatment on two surfaces of the waterproof polymer sheet to obtain the waterproof polymer sheet subjected to corona treatment;
sequentially coating a first hot-melt pressure-sensitive adhesive layer and a sand isolation layer on one surface of the corona-treated waterproof polymer sheet, and then carrying out first roll forming to obtain a semi-finished coiled material;
and (3) coating a second hot-melt pressure-sensitive adhesive layer and a separation film layer on the other surface of the semi-finished coiled material in sequence, and then carrying out second roll forming to obtain the composite waterproof coiled material.
According to the preparation method provided by the invention, firstly, glue and isolation sand are coated on one surface of a corona-treated waterproof polymer sheet material to form the upper surface of the composite waterproof coiled material; then coating glue and an isolating film on the other side of the corona-treated waterproof polymer sheet to form the lower surface of the composite waterproof coiled material; when the composite waterproof coiled material is wound, the isolation sand surface is on the inside, and the isolation film is on the outside. When the waterproof coiled material is constructed, the isolating film can be removed or not, the isolating sand surface faces upwards, and the isolating sand is bonded with post-cast concrete.
The invention carries out corona treatment on the two surfaces of the waterproof polymer sheet to obtain the waterproof polymer sheet subjected to corona treatment.
In the present invention, the method for producing a waterproof polymer sheet preferably comprises the steps of:
and sequentially stirring and mixing PE-UHMW, MPE, LLDPE, inorganic filler and dispersing agent, heating and plasticizing, extruding and calendaring to obtain the waterproof polymer sheet.
In the invention, the stirring and mixing are preferably performed in a stirring tank, and the stirring time of the stirring and mixing is preferably 10-15 min.
In the invention, the stirring and mixing are carried out to obtain the mixture. The invention preferably provides for the mixture to be heated and extruded to be calendered. In the invention, the heating plasticizing and extrusion calendaring are preferably performed in a double-screw extruder, the temperature of a feed inlet of the double-screw extruder is preferably 145+/-2 ℃, the temperature of a die head of the double-screw extruder is preferably 210+/-2 ℃, and the temperature of the double-screw extruder is gradually increased from the temperature of the feed inlet to the temperature of the die head. In the present invention, the screw rotation speed of the twin-screw extruder is preferably 8±2Hz at the time of the heating plasticization.
In the present invention, it is preferable to obtain a waterproof polymer sheet having a thickness of 1.5mm after the extrusion and the extrusion.
The waterproof polymer sheet is preferably subjected to cooling shaping, traction and rolling in sequence and then stored.
In the present invention, the specific embodiment of the corona treatment preferably includes the steps of: the waterproof polymer sheet passes through the space between two high-voltage electrodes, the air between the electrodes is ionized by the high voltage, so that electron flow is generated between the electrodes, oxidation polarization groups are formed on the two surfaces of the waterproof polymer sheet, the surfaces of the waterproof polymer sheet generate polarity, and the adhesion and adsorption of the hot-melt pressure-sensitive adhesive layer are facilitated.
In the present invention, the waterproof polymer sheet is preferably sequentially subjected to the opening and lapping before the corona treatment, and then the corona treatment is performed.
In the present invention, the corona value of the corona treatment is preferably 50±2 dynes (dyN).
After the corona-treated waterproof polymer sheet is obtained, a first hot-melt pressure-sensitive adhesive layer and a sand isolation layer are sequentially coated on one surface of the corona-treated waterproof polymer sheet, and then a first roll forming is carried out to obtain a semi-finished coiled material.
In the present invention, the sol temperature at which the first hot-melt pressure-sensitive adhesive layer is coated is preferably 150±5 ℃.
In the present invention, the pressure of the first roll forming is preferably 0.1-0.2 mpa.
After a semi-finished coiled material is obtained, a second hot-melt pressure-sensitive adhesive layer and a separation film layer are sequentially coated on the other surface of the semi-finished coiled material, and then second rolling forming is carried out to obtain the composite waterproof coiled material.
In the present invention, the sol temperature at which the second hot-melt pressure-sensitive adhesive layer is coated is preferably 150±5 ℃.
In the present invention, the pressure of the second roll forming is preferably 0.15 to 0.25mpa.
After the composite waterproof coiled material is obtained, the composite waterproof coiled material is preferably subjected to cooling, rolling, detection and packaging in sequence.
The invention provides an application of a composite waterproof coiled material in ultra-deep underground engineering, wherein the composite waterproof coiled material is prepared by the composite waterproof coiled material according to the technical scheme or the preparation method according to the technical scheme.
The invention improves the physical and mechanical properties and the watertight pressure of the composite waterproof coiled material, optimizes the glue coating process, improves the gapless combination of the high polymer sheet material, the hot-melt pressure-sensitive adhesive and the waterproof coiled material and the concrete, avoids the hidden trouble of interlayer water channeling, and is suitable for ultra-deep underground engineering.
The technical solutions provided by the present invention are described in detail below with reference to the drawings and examples for further illustrating the present invention, but they should not be construed as limiting the scope of the present invention.
Example 1
According to the flow chart shown in fig. 1: 35 parts of PE-UHMW (number average molecular weight 150 ten thousand, extruded SLL-G resin manufactured by Shanghai Bile chemical engineering Co., ltd.), 30 parts of LLDPE (melt index 2.5G/10min, density 0.91G/cm) 3 LLDPE 7042 produced by Yangzi petrochemical industry), 20 parts MPE (melt index of 3.5g/10min, density of 0.92 g/cm) 3 3518CB of Exxon chemical), 10 parts filler (500 mesh glass beads) and 5 parts dispersant (montan wax, density 0.9g/cm 3 Molecular weight 3500) is added into a stirring tank for mixingMixing, stirring for 15min, feeding into a double-screw extruder by a feeding pump, gradually heating to 210+ -2deg.C at the inlet temperature of the extruder and 8+ -2HZ at the die head temperature, plasticizing, extruding and calendaring the mixture to obtain a waterproof polymer sheet with the thickness of 1.5mm, cooling, shaping, traction and rolling.
According to the flow chart shown in fig. 2: conducting opening, lap joint and corona on the polymer sheet, wherein the corona value is 50+/-2 dyne (dyN); then one surface is coated with a hot-melt pressure-sensitive adhesive layer (XT-130F of Guangdong New Material technology Co., ltd.) at a temperature of 150+ -5deg.C, and coated with isolation sand, 0.2mm, and one-time roll forming, and the other surface is coated with a hot-melt pressure-sensitive adhesive layer (XT-130F of Guangdong New Material technology Co., ltd.) at a temperature of 0.5mm, and the sol temperature is 150+ -5deg.C, and the isolation film, 0.035mm, and the second roll forming cooling, winding, detecting and packaging to obtain the composite waterproof coiled material.
Example 2
According to the flow chart shown in fig. 1: 40 parts of PE-UHMW (number average molecular weight 250 ten thousand, extruded SLL-G resin manufactured by Shanghai Bile chemical engineering Co., ltd.), 25 parts of LLDPE (melt index of 1.5G/10min, density of 0.93G/cm) 3 LLDPE 7042 produced by Daqing petrochemical industry), 20 parts MPE (melt index of 3.5g/10min, density of 0.92 g/cm) 3 3518CB of Exxon chemical), 10 parts filler (500 mesh talc) and 5 parts dispersant (polyethylene wax, density 0.9 g/cm) 3 Molecular weight of 1500) is added into a stirring tank to be mixed and stirred for 10min, then the mixture is pumped into a double-screw extruder by a feed pump, the inlet temperature of the extruder is 145+/-2 ℃, the temperature of the extruder is gradually increased to 210+/-2 ℃ and the screw rotating speed is 8+/-2 HZ, and the mixture is plasticized, extruded and calendered into a waterproof polymer sheet with the thickness of 1.5mm, and then cooled, shaped, pulled and wound.
According to the flow chart shown in fig. 2: conducting opening, lap joint and corona on the polymer sheet, wherein the corona value is 50+/-2 dyne (dyN); one surface is coated with a hot-melt pressure-sensitive adhesive layer (XT-130F of Guangdong New Material science and technology Co., ltd.) at 0.5mm, the sol temperature is 150+ -5deg.C, isolation sand is coated, 0.2mm is formed by one-time rolling, the other surface is coated with a hot-melt pressure-sensitive adhesive layer (XT-130F of Guangdong New Material science and technology Co., ltd.) at 0.5mm, the sol temperature is 150+ -5deg.C, isolation film, 0.035mm, secondary rolling, cooling, winding, detecting and packaging to obtain the composite waterproof coiled material.
Example 3
According to the flow chart shown in fig. 1: 45 parts PE-UHMW (number average molecular weight 200 ten thousand, extruded SLL-G resin manufactured by Shanghai Bile chemical engineering Co., ltd.), 25 parts LLDPE (melt index 2.5G/10min, density 0.91G/cm) 3 LLDPE 7042 produced by Yangzi petrochemical industry), 15 parts MPE (melt index of 3.5g/10min, density of 0.92 g/cm) 3 3518CB of Exxon chemical), 10 parts filler (500 mesh mica powder) and 5 parts dispersant (montan wax, density 0.9g/cm 3 Molecular weight 3500) is added into a stirring tank to be mixed and stirred for 15min, then the mixture is pumped into a double-screw extruder by a feed pump, the inlet temperature of the extruder is 145+/-2 ℃, the temperature of the extruder is gradually increased to 210+/-2 ℃ and the screw rotating speed is 8+/-2 HZ, and the mixture is plasticized, extruded and calendered into a waterproof polymer sheet with the thickness of 1.5mm, and then cooled, shaped, pulled and wound.
According to the flow chart shown in fig. 2: conducting opening, lap joint and corona on the polymer sheet, wherein the corona value is 50+/-2 dyne (dyN); one surface of the composite waterproof coiled material is coated with a hot-melt pressure-sensitive adhesive layer (XT-130F of Guangdong New Material technology Co., ltd.) at 0.5mm, the sol temperature is 150+ -5 ℃, isolation sand is coated, 0.2mm is formed by one-time rolling, the other surface of the composite waterproof coiled material is coated with a hot-melt pressure-sensitive adhesive layer (XT-130F of Guangdong New Material technology Co., ltd.) at 0.5mm, the sol temperature is 150+ -5 ℃, the isolation membrane is 0.035mm, and the composite waterproof coiled material is obtained by secondary rolling, cooling, rolling, detecting and packaging
Example 4
According to the flow chart shown in fig. 1: 50 parts of PE-UHMW (number average molecular weight 150 ten thousand, extruded SLL-G resin manufactured by Shanghai Bile chemical engineering Co., ltd.), 25 parts of LLDPE (melt index 2.5G/10min, density 0.91G/cm) 3 LLDPE 9047 produced by Yangzi petrochemical industry), 17 parts MPE (melt index of 3.5g/10min, density of 0.92 g/cm) 3 Exxon (Ekken)Chemical 3518 CB), 5 parts filler (500 mesh glass fiber), and 3 parts dispersant (montan wax, density 0.9g/cm 3 Molecular weight 3500) is added into a stirring tank to be mixed and stirred for 15min, then the mixture is pumped into a double-screw extruder by a feed pump, the inlet temperature of the extruder is 145+/-2 ℃, the temperature of the extruder is gradually increased to 210+/-2 ℃ and the screw rotating speed is 8+/-2 HZ, and the mixture is plasticized, extruded and calendered into a waterproof polymer sheet with the thickness of 1.5mm, and then cooled, shaped, pulled and wound.
According to the flow chart shown in fig. 2: the macromolecule sheet is subjected to conducting-off, lap joint and corona, and the corona value is 50+/-2 dyne (dyN); one surface is coated with a hot-melt pressure-sensitive adhesive layer (XT-130F of Guangdong New Material science and technology Co., ltd.) at 0.5mm, the sol temperature is 150+ -5deg.C, isolation sand is coated, 0.2mm, one-time roll forming is performed, the other surface is coated with a hot-melt pressure-sensitive adhesive layer (XT-130F of Guangdong New Material science and technology Co., ltd.) at 0.5mm, the sol temperature is 150+ -5deg.C, an isolation film, 0.035mm, secondary roll forming cooling, winding, detection and packaging are performed, and the composite waterproof coiled material is obtained.
Comparative example 1
According to the flow chart shown in fig. 1: 50 parts of high density polyethylene (HDPE, number average molecular weight 15 ten thousand), 25 parts of LLDPE (melt index 2.5g/10min, density 0.91 g/cm) 3 LLDPE 7042 produced by Yangzi petrochemical industry), 17 parts MPE (melt index of 3.5g/10min, density of 0.92 g/cm) 3 3518CB of Exxon chemical), 5 parts filler (500 mesh glass fiber) and 3 parts dispersant (montan wax, density 0.9g/cm 3 Molecular weight 3500) is added into a stirring tank to be mixed and stirred for 15min, then the mixture is pumped into a double-screw extruder by a feed pump, the inlet temperature of the extruder is 145+/-2 ℃, the temperature of the extruder is gradually increased to 210+/-2 ℃ and the screw rotating speed is 8+/-2 HZ, and the mixture is plasticized, extruded and calendered into a high polymer sheet with the thickness of 1.5mm, and then cooled, shaped, pulled and wound.
According to the flow chart shown in fig. 2: conducting opening, lap joint and corona on the polymer sheet; corona value 50±2 dyne (dyN); one surface is coated with a hot-melt pressure-sensitive adhesive layer (XT-130F, guangdong New Material technology Co., ltd.) at 0.5mm, the sol temperature is 150+ -5deg.C, the isolation sand is covered, 0.2mm, one-time roll forming is performed, the other surface is coated with a hot-melt pressure-sensitive adhesive layer (XT-130F, guangdong New Material technology Co., ltd.) at 0.5mm, the sol temperature is 150+ -5deg.C, the isolation film, 0.035mm, secondary roll forming cooling, rolling, detection and packaging are performed.
Comparative example 2
According to the flow chart shown in fig. 1: 50 parts of PE-UHMW (number average molecular weight 150 ten thousand, extruded SLL-G resin manufactured by Shanghai Bile chemical engineering Co., ltd.), 25 parts of LLDPE (melt index 2.5G/10min, density 0.91G/cm) 3 LLDPE 7042 produced by Yangzi petrochemical industry) and 5 parts of filler (500 mesh glass fiber) and 3 parts of dispersing agent (montan wax with density of 0.9g/cm 3 Molecular weight 3500) is added into a stirring tank to be mixed and stirred for 15min, then the mixture is pumped into a double-screw extruder by a feed pump, the inlet temperature of the extruder is 145+/-2 ℃, the temperature of the extruder is gradually increased to 210+/-2 ℃ and the screw rotating speed is 8+/-2 HZ, and the mixture is plasticized, extruded and calendered into a high polymer sheet with the thickness of 1.5mm, and then cooled, shaped, pulled and wound.
According to the flow chart shown in fig. 2: conducting opening, lap joint and corona on the polymer sheet; corona value 50±2 dyne (dyN); one surface is coated with a hot-melt pressure-sensitive adhesive layer (XT-130F, guangdong New Material science and technology Co., ltd.) at 0.5mm, the sol temperature is 150+ -5deg.C, the isolation sand is covered, 0.2mm, one-time roll forming is performed, the other surface is coated with a hot-melt pressure-sensitive adhesive layer (XT-130F, guangdong New Material science and technology Co., ltd.) at 0.5mm, the sol temperature is 150+ -5deg.C, the isolation film, 0.035mm, secondary roll forming cooling, rolling, detection and packaging are performed.
Comparative example 3
According to the flow chart shown in fig. 1: 50 parts of PE-UHMW (number average molecular weight 150 ten thousand, extruded SLL-G resin manufactured by Shanghai Bile chemical engineering Co., ltd.), 25 parts of LLDPE (melt index 2.5G/10min, density 0.91G/cm) 3 LLDPE 7042 produced by Yangzi petrochemical industry), 17 parts MPE (melt index of 3.5g/10min, density of 0.92 g/cm) 3 3518CB of Exxon chemical), 5 parts filler (500 mesh glass beads) and 3 partsDispersing agent (montan wax, density of 0.9 g/cm) 3 Molecular weight 3500), adding into stirring tank, stirring for 15min, feeding into double screw extruder with inlet temperature 145+ -2deg.C, gradually heating to die head temperature 210+ -2deg.C and screw rotation speed 8+ -2 HZ, plasticizing, extruding, calendaring to obtain 1.5mm polymer sheet, cooling, shaping, traction, and rolling.
According to the flow chart shown in fig. 2: the polymer sheets are guided and lapped; one surface is coated with a hot-melt pressure-sensitive adhesive layer (XT-130F, guangdong New Material science and technology Co., ltd.) at 0.5mm, the sol temperature is 150+ -5deg.C, the isolation sand is covered, 0.2mm, one-time roll forming is performed, the other surface is coated with a hot-melt pressure-sensitive adhesive layer (XT-130F, guangdong New Material science and technology Co., ltd.) at 0.5mm, the sol temperature is 150+ -5deg.C, the isolation film, 0.035mm, secondary roll forming cooling, rolling, detection and packaging are performed.
Test example 1
The composite waterproof coiled materials prepared in examples 1-4 and comparative examples 1-3 were subjected to physical mechanical and waterproof performance tests, wherein the tensile strength test is referred to GB/T328.9-2007, the elongation test is referred to GB/T328.9-2007, and the peel strength test method with post-cast concrete is referred to GB/T23457-2017. The test results are shown in Table 1.
Table 1 test results of composite waterproof rolls prepared in examples 1 to 4 and comparative example 1
As can be seen from table 1: the invention adopts a (PE-UHMW) synthetic resin double-screw extrusion process, and the molecular chain length is utilized, so that entanglement is necessarily generated among the molecular chains, the aggregation state structure is also changed, and the tensile strength, the fracture elongation, the environmental stress fracture resistance and the like are far higher than those of common polyethylene; meanwhile, in order to enhance the bonding force between the polymer sheet and the hot-melt pressure-sensitive adhesive and between the waterproof coiled material and the concrete, corona is carried out on two sides of the polymer sheet. The invention can be used for finally producing the tensile strength and the water impermeability which are not achieved by the traditional process, and can be suitable for the waterproof engineering of ultra-deep underground in the future.
Although the foregoing embodiments have been described in some, but not all embodiments of the invention, other embodiments may be obtained according to the present embodiments without departing from the scope of the invention.
Claims (9)
1. A composite waterproof coiled material is characterized by comprising a waterproof polymer sheet; the waterproof polymer sheet material is made of waterproof polymer materials, and the waterproof polymer materials comprise the following components in parts by weight:
35-50 parts of ultra-high molecular weight polyethylene;
25-30 parts of linear low-density polyethylene;
15-20 parts of metallocene polyethylene;
5-10 parts of an inorganic filler;
3-5 parts of a dispersing agent;
the number average molecular weight of the ultra-high molecular weight polyethylene is more than or equal to 150 ten thousand;
the dispersing agent is organic wax; the melt index of the linear low density polyethylene is 1.5-2.5 g/10min; the melt index of the metallocene polyethylene is 2.5-3.5 g/10min;
sequentially stacking a first hot-melt pressure-sensitive adhesive layer and an isolation sand layer which are arranged on one surface of the waterproof polymer sheet;
sequentially stacking a second hot-melt pressure-sensitive adhesive layer and a separation film layer which are arranged on the other surface of the waterproof polymer sheet;
the preparation method of the composite waterproof coiled material comprises the following steps:
carrying out corona treatment on two surfaces of the waterproof polymer sheet to obtain the waterproof polymer sheet subjected to corona treatment;
sequentially coating a first hot-melt pressure-sensitive adhesive layer and a sand isolation layer on one surface of the corona-treated waterproof polymer sheet, and then carrying out first roll forming to obtain a semi-finished coiled material;
and (3) coating a second hot-melt pressure-sensitive adhesive layer and a separation film layer on the other surface of the semi-finished coiled material in sequence, and then carrying out second roll forming to obtain the composite waterproof coiled material.
2. The composite waterproof coiled material according to claim 1, wherein the ultra-high molecular weight polyethylene has a number average molecular weight of 150-250 ten thousand; the ultra-high molecular weight polyethylene is linear polyethylene.
3. The composite waterproof coiled material according to claim 1, wherein the linear low-density polyethylene has a density of 0.91-0.93 g/cm 3 。
4. The composite waterproof coiled material according to claim 1, wherein the density of the metallocene polyethylene is 0.91-0.92 g/cm 3 。
5. The composite waterproof coiled material according to claim 1, wherein the inorganic filler is one or more of glass beads, glass fiber powder, mica powder and talcum powder;
the particle size of the inorganic filler is 20-35 mu m.
6. The composite waterproof coiled material according to claim 1, wherein the dispersing agent is montan wax and/or polyethylene wax; the density of the dispersing agent is 0.9-0.95g/cm 3 The molecular weight is 1500-3500.
7. The composite waterproof roll according to any one of claims 1 to 6, wherein the waterproof polymer sheet has a thickness of 1.5 to 2mm; the thickness of the first hot-melt pressure-sensitive adhesive layer and the second hot-melt pressure-sensitive adhesive layer is independently 0.5-1 mm; the thickness of the isolation sand layer is 0.2-0.5 mm; the thickness of the isolation film layer is 0.035-0.045 mm.
8. A method for preparing a composite waterproof coiled material, which is characterized in that the composite waterproof coiled material is the composite waterproof coiled material according to any one of claims 1-7;
the method comprises the following steps:
carrying out corona treatment on two surfaces of the waterproof polymer sheet to obtain the waterproof polymer sheet subjected to corona treatment;
sequentially coating a first hot-melt pressure-sensitive adhesive layer and a sand isolation layer on one surface of the corona-treated waterproof polymer sheet, and then carrying out first roll forming to obtain a semi-finished coiled material;
and (3) coating a second hot-melt pressure-sensitive adhesive layer and a separation film layer on the other surface of the semi-finished coiled material in sequence, and then carrying out second roll forming to obtain the composite waterproof coiled material.
9. The application of the composite waterproof coiled material in ultra-deep underground engineering is characterized in that the composite waterproof coiled material is prepared by the preparation method of any one of claims 1-7 or 8.
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