CN113861542B - Cracking-resistant non-asphalt waterproof coiled material and preparation process thereof - Google Patents
Cracking-resistant non-asphalt waterproof coiled material and preparation process thereof Download PDFInfo
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- CN113861542B CN113861542B CN202111187868.3A CN202111187868A CN113861542B CN 113861542 B CN113861542 B CN 113861542B CN 202111187868 A CN202111187868 A CN 202111187868A CN 113861542 B CN113861542 B CN 113861542B
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- 239000000463 material Substances 0.000 title claims abstract description 56
- 238000005336 cracking Methods 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title abstract description 40
- 239000010426 asphalt Substances 0.000 title abstract description 13
- 239000000835 fiber Substances 0.000 claims abstract description 119
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 61
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 238000007710 freezing Methods 0.000 claims abstract description 18
- 230000008014 freezing Effects 0.000 claims abstract description 18
- 229920000728 polyester Polymers 0.000 claims abstract description 16
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 14
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 14
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 14
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 7
- 239000011707 mineral Substances 0.000 claims abstract description 7
- 239000004014 plasticizer Substances 0.000 claims abstract description 7
- 239000004831 Hot glue Substances 0.000 claims abstract description 6
- 239000008187 granular material Substances 0.000 claims abstract 2
- 239000002216 antistatic agent Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 12
- 238000004078 waterproofing Methods 0.000 claims description 11
- 239000012528 membrane Substances 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229910000077 silane Inorganic materials 0.000 claims description 6
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical group CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 claims description 4
- 229920004933 Terylene® Polymers 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 4
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 4
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000010345 tape casting Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 28
- 230000000052 comparative effect Effects 0.000 description 22
- 230000000694 effects Effects 0.000 description 13
- 239000000243 solution Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 9
- 238000010257 thawing Methods 0.000 description 9
- 208000037656 Respiratory Sounds Diseases 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 230000035515 penetration Effects 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 4
- 150000007530 organic bases Chemical class 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000002791 soaking Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 230000035699 permeability Effects 0.000 description 2
- 238000009832 plasma treatment Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
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- 230000007423 decrease Effects 0.000 description 1
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- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 125000005498 phthalate group Chemical group 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
- D06M10/06—Inorganic compounds or elements
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/53—Polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a cracking-resistant non-asphalt waterproof coiled material and a preparation process thereof, wherein the waterproof coiled material comprises the following raw materials in parts by weight: 100 parts of HDPE; 7-10 parts of a plasticizer; 32-36 parts of calcium carbonate; 49-52 parts of EVA hot melt adhesive; 8 to 11 portions of mineral granules; 2-4.6 parts of modified fiber; the modified fiber is obtained by freezing treatment liquid at low temperature by using polyester breathable fiber, wherein the concentration of NaOH in the treatment liquid is 0.3 to 0.52mol/L; the length of the modified fiber is 0.6-1 of the thickness of the coiled material, the raw materials are added into a mixer to be mixed at high speed, and then the mixture is melted, cast, rolled and shaped to obtain the waterproof coiled material.
Description
Technical Field
The invention relates to the field of organic waterproof materials, in particular to a cracking-resistant non-asphalt waterproof coiled material and a preparation process thereof.
Background
The waterproof roll is mainly used for building walls, roofs, tunnels and the like, can be curled into a roll-shaped flexible building material product for resisting external rainwater and underground water leakage, is used as a leakage-free connection between an engineering foundation and a building, is a first barrier for waterproofing of the whole engineering, and plays a vital role in the whole engineering.
The waterproof coiled material is prepared by taking HDPE as a main organic base material and matching with inorganic filler, a binder and other auxiliaries such as a thickening agent and the like.
The inventor of the application finds that the waterproof coiled material has good fracture resistance at room temperature or outdoor temperature of more than 20 ℃, but the fracture resistance is embodied in overall fracture resistance, and the fracture resistance is poor after fine cracks are generated. This kind of waterproofing membrane is ageing very fast because the one side that is located external environment, easily produces the crackle, and its crackle can not once only crack waterproofing membrane from the coiled material thickness, but can make liquid flow in the crackle, and ambient temperature is undulant about the freezing point of liquid freezes, can form freeze thawing cycle, further deepens the crackle, makes waterproofing membrane waterproof nature greatly decline or waterproof nature destroyed, current organic material waterproofing membrane finally.
Disclosure of Invention
The invention aims to solve the problem that the existing non-asphalt waterproof coiled material is easy to damage waterproofness because cracks are easy to deepen after the cracks are generated, and provides a non-asphalt waterproof coiled material with cracking resistance and a preparation process thereof.
In a first aspect, the invention provides a non-asphalt waterproof coiled material with cracking resistance, which is realized by adopting the following scheme: the cracking-resistant non-asphalt waterproof coiled material is prepared by mixing, heating and tape casting the following raw materials in parts by mass:
100 parts of HDPE;
7-10 parts of a plasticizer;
32-36 parts of calcium carbonate;
49-52 parts of EVA hot melt adhesive;
8-11 parts of mineral particles;
2-4.6 parts of modified fiber;
the modified fiber is obtained by freezing the terylene breathable fiber in a treatment fluid at a low temperature,
the concentration of NaOH in the treatment liquid is 0.3-0.52 mol/L;
the ratio of the length of the modified fiber to the thickness of the coiled material is 0.6-1.
By adopting the technical scheme, the pore cavities are formed in the polyester breathable fibers, and air is filled in the pore cavities, in the application, the polyester breathable fibers are subjected to low-temperature freezing treatment by the treatment liquid, sodium hydroxide crystals precipitated during freezing can penetrate into the polyester breathable fibers along with freeze-thaw cycles, and modified fibers with a large number of fine pores communicated with the pore cavities on the surfaces are obtained,
HDPE melts in this application waterproofing membrane production process, and modified fiber will be discharged by the gas in the vestibule of intercommunication under the heating pressurization (receive outside melting HDPE extrusion pressurized), so make the fibre surface sunken. The maximum sunken depth can reach 0.3 times of fiber diameter, and the sunken depth is intensively distributed in 0.21-0.26 times of fiber diameter, so that the outer side surface of the modified fiber and the organic base material of the waterproof roll can be connected and fixed at high strength in a micron order, and a foundation is provided for providing tension for the modified fiber and preventing the waterproof roll from generating cracks.
Meanwhile, naOH crystal puncture sites are uniform on the basis of the whole fiber, and for micron-sized fiber sections, the NaOH crystal puncture sites are not uniform, so that the distribution of depressions on the surface of the fiber is not uniform, the lengths of the depressions along the length of the fiber are different, but the NaOH crystal puncture sites are small, the damage to the tensile strength of the surface of the fiber is small, the depressions are formed by spontaneous depressions of the fiber instead of external cutting damage, and the strength of the fiber sections at the depressions is increased rather than reduced compared with that of the fiber sections at other positions without depressions, and then the fiber sections are combined with the waterproof coiled material through the surface of the fiber.
This is not possible with external plasma treatment, which is not "stable" to obtain fibers with a depth of depression of 0.21 to 0.26 times the diameter. On one hand, when the fiber is obtained by plasma treatment and other methods, a large amount of fibers with the defect depth larger than 0.5 time of the diameter and broken fibers are generated, even the fibers are fused together, and a large amount of static electricity is carried and is not easy to disperse; on the other hand, the strength of the fiber is reduced, and the effect is not good.
The modified fibers are short in length and are not mixed in the coiled material orderly, the mixing modes are various, and the modified fibers are bent, straight and coiled and are not spread along the surface of the coiled material, so that tensioning prestress is uniformly distributed in all dimension directions of the coiled material;
meanwhile, compared with the glass fiber gridding cloth in the existing asphalt waterproof coiled material, the glass fiber gridding cloth enhances the integral breaking strength of the waterproof coiled material, the asphalt material has the capability of self-repairing by heating as a fluid, the glass fiber gridding cloth distributed on the integral plane can effectively guide the self-repairing of the asphalt material in the waterproof coiled material of the asphalt material, but when the glass fiber gridding cloth is used for the waterproof coiled material taking HDPE as an organic base material, the expansion and contraction coefficients of the waterproof coiled material are different due to the temperature difference, and the phenomenon of more serious cracks is caused; the modified fiber is short, the tension force at a multi-dimensional angle is provided, and the crack generation and crack penetration are effectively reduced.
To sum up, this application anti cracked waterproofing membrane adds behind the modified fiber of this application for waterproofing membrane reduces to produce the crackle and hinders continuation deep of crackle under the freeze thawing cycle, then protects waterproofing membrane's waterproof performance.
Optionally, the treatment liquid also contains KCl, and the concentration of the KCl is 0.21-0.38 mol/L.
Optionally, the concentration of NaOH in the treatment solution is 0.43mol/L, and the concentration of KCl in the treatment solution is 0.31mol/L.
By adopting the technical scheme, KCl is added into the treatment liquid, and the treated modified fiber has better improvement effect on the waterproof coiled material taking HDPE as the organic base material, wherein the effect is better when the concentration of NaOH is 0.43mol/L and the concentration of KCl is 0.31mol/L.
Optionally, the length of the modified fiber is 3-5 mm.
By adopting the technical scheme, the rear degree of the existing coiled material is in the range of 1.35-5 mm, the waterproof coiled material is generally 2-5 mm, the length of the modified fiber is 3-5 mm, the modified fiber is not easy to roll in a mixing process or a casting process, the modified fiber is wound mutually, the head and the tail of the modified fiber are always in a person, the distribution is good, and the anti-crack effect is good.
Optionally, the raw material polyester breathable fiber of the modified fiber is subjected to antistatic treatment by using an antistatic agent before treatment of the treatment liquid, and the antistatic agent is a non-silane coupling type antistatic agent.
By adopting the technical scheme, the modified fiber subjected to antistatic treatment is easier to disperse and convenient to mix in the process of mixing with other raw materials, and simultaneously seems to be beneficial to the organic combination of the modified fiber and HDPE and the like. In addition, silane coupling type antistatic agent is not applicable to the application, and experiments show that silane coupling type antistatic agent has a blocking effect on the freezing and thawing puncture hole cavity of the treatment fluid, so that silane coupling type antistatic agent cannot be used.
Optionally, the antistatic agent is octadecylamine polyoxyethylene ether.
By adopting the technical scheme, the octadecylamine polyoxyethylene ether has a good effect when being used as an antistatic agent.
In a second aspect, the invention provides a preparation process of a cracking-resistant waterproof roll, which is realized by adopting the following scheme: the preparation process of the anti-cracking waterproof roll comprises the following steps:
s1, adding the raw materials into a mixer, and mixing at a high speed at 40-50 ℃ for 5-30 min;
s2, melting, casting, rolling and shaping the mixed raw materials to obtain the waterproof roll.
By adopting the technical scheme, the waterproof coiled material has good performances of crack resistance and crack deepening resistance.
In conclusion, the invention has the following beneficial effects:
1. after the modified fiber is added into the anti-cracking waterproof coiled material, cracks are reduced and the continuous penetration of the cracks under freeze-thaw cycle is prevented, so that the waterproof performance of the waterproof coiled material is protected;
2. the modified fiber with the length of 3-5 mm is not easy to roll in the mixing process or the casting process, namely the modified fiber is wound with each other, the end is always human, the distribution is good, and the anti-crack effect is good;
3. modified fiber through antistatic treatment is changeed the dispersion at the in-process of mixing with other raw materials, and convenient the mixing helps organic combination such as modified fiber and HDPE, further improves the waterproof performance protection effect of this application waterproofing membrane.
Detailed Description
Preparation example 1
The preparation method of the modified fiber comprises the following steps:
soaking polyester breathable fibers with the length of 4mm and the diameter of 50 +/-2 mu m into treatment liquid, and applying force to keep the polyester breathable fibers soaked in the treatment liquid, wherein the treatment liquid is a mixed solution of NaOH and KCl, the concentration of NaOH is 0.43mol/L, and the concentration of KCl is 0.31mol/L;
and (3) cooling and freezing the treatment liquid mixed with the polyester breathable fibers, freezing for 2h, then heating and unfreezing in a natural environment, so that one-time freezing and unfreezing is adopted as a freezing and thawing process, repeated operation is carried out for 5 times in total, and the fibers are fished out and naturally dried to obtain the modified fibers.
Preparation examples 2 to 7
A modified fiber, which is different from the modified fiber of example 1 in the length of the polyester air-permeable fiber as the raw material and the concentration of the component in the treatment liquid. The process parameters for the modified fibers of preparation examples 1-7 are shown in table one below.
TABLE I modified fiber Process parameter tables in preparation examples 1 to 7
| Preparation example 1 | Preparation example 2 | Preparation example 3 | Preparation example 4 | Preparation example 5 | Preparation example 6 | Preparation example 7 | |
| Length of fiber/μm | 4 | 4 | 4 | 3 | 5 | 6 | 2 |
| NaOH concentration/mol. L -1 | 0.43 | 0.3 | 0.52 | 0.43 | 0.43 | 0.43 | 0.43 |
| KCl concentration/mol. L -1 | 0.31 | 0.21 | 0.38 | 0.31 | 0.31 | 0.31 | 0.31 |
In addition, preparation examples 8 to 12 were also provided.
Preparation examples 8 to 12
A modified fiber is prepared by the following steps:
soaking the terylene breathable fibers with the diameter of 50 +/-2 microns in a destaticizing liquid for 20min, fishing out after soaking, and naturally drying to obtain the destaticizing treatment fibers. The destaticizing liquid is an aqueous solution of an antistatic agent.
Soaking the prepared static electricity removing fiber into a treatment solution, and applying force to keep the terylene breathable fiber soaked in the treatment solution, wherein the treatment solution is a mixed solution of NaOH and KCl.
And (3) cooling and freezing the treatment liquid mixed with the polyester breathable fibers, freezing for 2h, then heating and unfreezing in a natural environment, so that one-time freezing and unfreezing is adopted as a freezing and thawing process, repeated operation is carried out for 5 times in total, and the fibers are fished out and naturally dried to obtain the modified fibers. The process parameters for the modified fibers of preparation examples 8-12 are shown in Table two below.
TABLE II modified fiber Process parameter tables of preparation examples 8 to 12
Examples 1 to 11
The anti-cracking waterproof roll comprises the following raw materials in parts by mass: 100 parts of HDPE, 8 parts of plasticizer, 35 parts of calcium carbonate, 50 parts of EVA hot melt adhesive, 9 parts of mineral particles and 3.8 parts of modified fiber.
The preparation process comprises the following steps:
s1, adding the raw materials into a mixer, and mixing at a high speed at 40-50 ℃ for 5-30 min;
s2, melting, casting, rolling and shaping the mixed raw materials to obtain the waterproof roll product, wherein the melting temperature is 188 ℃.
The plasticizer is phthalate, the mineral particles are kaolin powder, and the particle diameters of the kaolin powder and the calcium carbonate are both 80 +/-5 mu m.
Examples 1-12 differ in the source of the modified fiber. The modified fiber sources in examples 1 to 12 are shown in table three below.
TABLE III production Process parameters for examples 1 to 12
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | |
| Modified fiber sources | Preparation example 1 | Preparation example 2 | Preparation example 3 | Preparation example 4 | Preparation example 5 | Preparation example 6 |
| Example 7 | Example 8 | Example 9 | Example 10 | Example 11 | ||
| Modified fiber sources | Preparation example 7 | Preparation example 8 | Preparation example 9 | Preparation example 11 | Preparation example 12 |
Examples 12 to 15
The anti-cracking waterproof roll material is characterized by other raw material dosage and modified fiber source based on the embodiment 1. The feed parameters for examples 12-15 are shown in Table four below.
TABLE IV raw material parameters of examples 12 to 15
| Example 12 | Example 13 | Example 14 | Example 15 | |
| Modified fiber sources | Preparation example 1 | Preparation example 1 | Preparation example 9 | Preparation example 9 |
| HDPE/kg | 100 | 100 | 100 | 100 |
| Plasticizer/kg | 7 | 10 | 7 | 9 |
| Calcium carbonate/kg | 32 | 36 | 32 | 35 |
| EVA Hot melt adhesive/kg | 49 | 52 | 49 | 50 |
| Mineral particles/kg | 8 | 11 | 8 | 10 |
| Modified fiber/kg | 2 | 4.6 | 2 | 4.5 |
Example 16
A crack-resistant waterproof coiled material is characterized in that based on the embodiment 1, the processing liquid is NaOH solution, and the concentration of NaOH is 0.43mol/L.
Example 17
A crack-resistant waterproof coiled material is characterized in that based on the embodiment 1, the processing liquid is NaOH solution, and the concentration of NaOH is 0.21mol/L.
Example 18
A crack-resistant waterproof coiled material is characterized in that based on the embodiment 1, the processing liquid is NaOH solution, and the concentration of NaOH is 0.38mol/L.
Comparative example 1
The anti-cracking waterproof roll is based on example 1, and is characterized in that the polyester breathable fibers are directly used instead of modified fibers.
Comparative example 2
The anti-cracking waterproof roll is based on example 4, and is characterized in that the polyester breathable fibers are directly used instead of modified fibers.
Comparative example 3
Based on example 5, the waterproof roll with crack resistance is characterized in that the polyester breathable fibers are used to directly replace modified fibers.
Comparative example 4
A crack-resistant waterproof roll material, which is based on the waterproof roll material in example 1, and is characterized in that the modified fiber is obtained from the modified fiber in preparation example 10.
Comparative example 5
Based on example 12, the waterproof roll with crack resistance is characterized in that the polyester breathable fibers are used to directly replace modified fibers.
Comparative example 6
Based on example 13, the waterproof roll with crack resistance is characterized in that the polyester breathable fibers are used to directly replace modified fibers.
The examples 1 to 15 and the comparative examples 1 to 6 were subjected to a freeze-thaw crack deepening resistance test, and the detection data thereof are shown in the following table five and table six.
[ test for deepening of crack by freezing and thawing ]
1. A test coiled material of 0.8m x 0.8m is unfolded, a sample cutter is adopted to open cracks on the coiled material, the opening depth is 1mm, the crack length is 2mm, the cracks are uniformly distributed at intervals, and the distribution spacing is 8cm.
2. And (2) taking the crack simulating sample which is not subjected to the waterproof and compression-resistant test after the step 1, performing freeze thawing treatment, wherein the freeze thawing treatment comprises horizontally spreading the treated sample and immersing the sample in water, the water surface is 2cm higher than the upper surface of the sample, cooling to completely freeze the water, naturally melting the sample after freezing for 30min, repeatedly freezing and thawing after the water temperature reaches 15 ℃, circulating for 50 times to obtain a freeze-thaw crack sample, and performing the waterproof and compression-resistant test.
The sample cutter includes the clamp plate and the fixed blade that is located clamp plate side, and the part that the blade is located the clamp plate outside is the thorn piece, and the thorn piece is the rectangle, and the long limit of rectangle is on a parallel with the clamp plate and long limit length is 2mm, and the perpendicular clamp plate of minor face and minor face length of rectangle are 1mm. The number of the blades is multiple, the blades and the barbed sheets are distributed on the pressing plate in a rectangular array, the barbed sheets in each row are parallel to each other, and the spaces between every two rows are 2cm; the barbed sheets of each row are positioned on the same plane, and the spaces between every two rows are 2cm.
The waterproof and compression-resistant test method refers to GB/T328.10-2007 part 10 of test method of building waterproof coiled materials: a method B in the water impermeability of asphalt and polymer waterproof coiled materials selects a 7-hole round disc for experiment, and the experimental result is measured by water pressure and water permeation time. (pass failure to permeate water within a specified time in Standard)
TABLE VI Damage crack deepening test results of examples 1 to 15 and comparative examples 1 to 7
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | |
| (0.34 MPa water pressure) water permeation time/min | 62 | 49 | 67 | 47 | 53 | 41 |
| (0.42 MPa water pressure) Water Permeability time/min | 46 | 37 | 50 | 35 | 40 | 31 |
| Example 7 | Example 8 | Example 9 | Example 10 | Example 11 | Example 12 | |
| (0.34 MPa water pressure) water permeation time/min | 31 | 80 | 99 | 63 | 72 | 53 |
| (0.42 MPa water pressure) water permeation time/min | 23 | 60 | 74 | 47 | 54 | 39 |
| Example 13 | Example 14 | Example 15 | Example 16 | Example 17 | Example 18 | |
| (0.34 MPa water pressure) water permeation time/min | 70 | 77 | 88 | 53 | 58 | 59 |
| (0.42 MPa water pressure) water permeation time/min | 53 | 56 | 65 | 40 | 42 | 43 |
| Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 | Comparative example 6 | |
| (0.34 MPa water pressure) Water Permeability time/min | 24 | 25 | 24 | 27 | 21 | 23 |
| (0.42 MPa water pressure) water permeation time/min | 17 | 19 | 18 | 20 | 16 | 17 |
By combining example 1, comparative example 1 and table six, it can be seen that the water penetration time of example 1 is far longer than that of comparative example 1 after the modified fiber is added; by combining example 4, comparative example 2 and table six, the water penetration time of example 2 is far longer than that of comparative example 2 after the modified fiber is added in the application; by combining example 5, comparative example 3 and table six, it can be seen that the water penetration time of example 5 is far longer than that of comparative example 3 after the modified fiber is added in the application; the modified fiber is added, so that compared with unmodified fiber, freeze-thaw cycle after the modified fiber is added obviously reduces damage to the waterproof property of the waterproof roll with cracks, and the waterproof property of the waterproof roll is protected.
By combining the example 1, the example 2 and the example 3, it can be known that when the thickness of the coil is 5mm, the concentration of NaOH and KCl in the treatment solution is 0.43mol/L and 0.31mol/L, and the obtained modified fiber is added into the raw materials of the present application, and then has a good waterproof protection effect on the waterproof coil under the synergistic effect of the modified fiber and other raw materials.
It can be seen from the combination of examples 1, 4, 6 and 7 that the modified fibers in examples 6, 4, 1, 5 and 7 have sequentially increased lengths, but the waterproof protection effect is firstly increased and then weakened after being increased by more than 4mm, and the waterproof protection effect is obviously reduced after being increased by 6 mm. Therefore, the length of the modified fiber is 3 to 5mm, and the modified fiber is preferably 3 to 5mm, and the ratio of the length of the modified fiber to the thickness of the coil is preferably 0.6 to 1.
By combining the examples 1, 8 and 9, the waterproof performance of the waterproof rolls of the examples 8 and 9 is better than that of the waterproof rolls of the example 1 under the freeze-thaw crack deepening test; by combining the examples 4, 5, 10 and 11, it can be known that the waterproof performance of the waterproof coiled material of the example 10 is better than that of the example 4 under the freeze-thaw crack deepening test, and the waterproof performance of the waterproof coiled material of the example 11 is better than that of the example 5 under the freeze-thaw crack deepening test; the antistatic agent is selected for treatment, so that the modified fiber subjected to antistatic treatment is easier to disperse and convenient to mix in the process of mixing with other raw materials, and meanwhile, the antistatic treatment seems to be beneficial to the organic combination of the modified fiber and HDPE and the like.
Comparative example 4 waterproof performance of the waterproof roll under the freeze-thaw crack deepening experiment is inferior to that of example 1, and the applicant finds that silane coupling agent substances are not suitable for the application and have a blocking effect on the freeze-thaw puncture cavity of the treatment solution through trying other silane coupling type antistatic agents, so that the silane coupling agent substances cannot be used.
In addition, the octadecylamine polyoxyethylene ether used in example 9 among the available antistatic agents has a good effect.
By combining example 1 and examples 16 to 18, it can be seen that when the modified fiber is obtained, the KCl is added into the treatment solution, so that the waterproof protection effect of the modified fiber on the waterproof roll material can be further improved, and the concentration of KCl is preferably 0.31mol/L.
By combining the examples 10 to 15 and the comparative examples 5 to 6, the improvement method of the application comprises the following raw materials in parts by mass: 100 parts of HDPE; 7-10 parts of a plasticizer; 32-36 parts of calcium carbonate; 49-52 parts of EVA hot melt adhesive; 8-11 parts of mineral particles; the modified fiber has better waterproof protection effect within the range of 2 to 4.6 parts.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (7)
1. The anti-cracking waterproof roll is characterized by comprising the following raw materials in parts by mass, and is obtained by mixing and heating tape casting:
100 parts of HDPE;
7-10 parts of a plasticizer;
32-36 parts of calcium carbonate;
49-52 parts of EVA hot melt adhesive;
8 to 11 portions of mineral granules;
2-4.6 parts of modified fiber;
the modified fiber is obtained by freezing the terylene breathable fiber in a treatment fluid at a low temperature,
the concentration of NaOH in the treatment liquid is 0.3 to 0.52mol/L;
the ratio of the length of the modified fiber to the thickness of the coiled material is 0.6 to 1.
2. The anti-cracking waterproof roll material as claimed in claim 1, wherein the treatment liquid also contains KCl, and the concentration of the KCl is 0.21 to 0.38mol/L.
3. The crack-resistant waterproof roll as claimed in claim 2, wherein the concentration of NaOH in the treatment solution is 0.43mol/L, and the concentration of KCl in the treatment solution is 0.31mol/L.
4. The anti-cracking waterproof roll material as claimed in claim 1, wherein the length of the modified fiber is 3-5 mm.
5. The anti-cracking waterproof roll material as claimed in claim 1, wherein the raw material of the modified fiber, namely the breathable polyester fiber, is subjected to antistatic treatment by using an antistatic agent before treatment by the treatment liquid, and the antistatic agent is a non-silane coupling type antistatic agent.
6. The anti-cracking waterproof coiled material as claimed in claim 5, wherein the antistatic agent is octadecylamine polyoxyethylene ether.
7. A process for making a crack resistant waterproofing membrane of any of claims 1~6 comprising the steps of:
s1, adding the raw materials into a mixer, and mixing at a high speed at 40-50 ℃ for 5-30min;
s2, melting, tape casting, rolling and shaping the mixed raw materials to obtain the waterproof roll product, wherein the melting temperature is 180-200 ℃.
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| CN112624723A (en) * | 2021-01-13 | 2021-04-09 | 杭州申华混凝土有限公司 | Freeze-thaw resistant concrete and preparation method thereof |
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| EP1620506B1 (en) * | 2003-05-02 | 2011-03-09 | E.I. Du Pont De Nemours And Company | Polyesters containing microfibers, and methods for making and using same |
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| JP2011084855A (en) * | 2009-09-15 | 2011-04-28 | Nagoya Oil Chem Co Ltd | Heat adhesive nonwoven fabric, sound absorption fiber sheet, and sound absorption material |
| CN101831727A (en) * | 2010-04-01 | 2010-09-15 | 东华大学 | Cotton-simulated terylene short fiber and preparation method thereof |
| CN107441963A (en) * | 2017-08-10 | 2017-12-08 | 武汉纺织大学 | A kind of preparation method of aqueous phase polymeric hollow fiber array material |
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