CN116731447A - High-strength polyvinyl chloride waterproof coiled material and preparation method thereof - Google Patents
High-strength polyvinyl chloride waterproof coiled material and preparation method thereof Download PDFInfo
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- CN116731447A CN116731447A CN202310728802.3A CN202310728802A CN116731447A CN 116731447 A CN116731447 A CN 116731447A CN 202310728802 A CN202310728802 A CN 202310728802A CN 116731447 A CN116731447 A CN 116731447A
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- polyvinyl chloride
- coiled material
- waterproof coiled
- chloride waterproof
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- 239000004800 polyvinyl chloride Substances 0.000 title claims abstract description 154
- 229920000915 polyvinyl chloride Polymers 0.000 title claims abstract description 154
- 239000000463 material Substances 0.000 title claims abstract description 130
- 238000002360 preparation method Methods 0.000 title abstract description 34
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 60
- 239000004917 carbon fiber Substances 0.000 claims abstract description 60
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000011347 resin Substances 0.000 claims abstract description 31
- 229920005989 resin Polymers 0.000 claims abstract description 31
- 239000004014 plasticizer Substances 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 239000011256 inorganic filler Substances 0.000 claims abstract description 14
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 14
- 239000004595 color masterbatch Substances 0.000 claims abstract description 9
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 8
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 8
- 239000003381 stabilizer Substances 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 239000000314 lubricant Substances 0.000 claims abstract description 6
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 238000007493 shaping process Methods 0.000 claims abstract description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 106
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 53
- 229920000459 Nitrile rubber Polymers 0.000 claims description 30
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical class [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 23
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 claims description 21
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 20
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 20
- 239000002904 solvent Substances 0.000 claims description 17
- JNXDCMUUZNIWPQ-UHFFFAOYSA-N trioctyl benzene-1,2,4-tricarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C(C(=O)OCCCCCCCC)=C1 JNXDCMUUZNIWPQ-UHFFFAOYSA-N 0.000 claims description 17
- 229920000962 poly(amidoamine) Polymers 0.000 claims description 14
- 238000006116 polymerization reaction Methods 0.000 claims description 13
- 229910001701 hydrotalcite Inorganic materials 0.000 claims description 12
- 229960001545 hydrotalcite Drugs 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 239000007821 HATU Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 2
- 230000004048 modification Effects 0.000 description 11
- 238000012986 modification Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 238000012360 testing method Methods 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 230000003014 reinforcing effect Effects 0.000 description 8
- 230000014759 maintenance of location Effects 0.000 description 6
- 239000000835 fiber Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- ZFOZVQLOBQUTQQ-UHFFFAOYSA-N Tributyl citrate Chemical compound CCCCOC(=O)CC(O)(C(=O)OCCCC)CC(=O)OCCCC ZFOZVQLOBQUTQQ-UHFFFAOYSA-N 0.000 description 4
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 4
- 230000032683 aging Effects 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 4
- 239000008116 calcium stearate Substances 0.000 description 4
- 235000013539 calcium stearate Nutrition 0.000 description 4
- 238000002715 modification method Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 239000005662 Paraffin oil Substances 0.000 description 3
- 239000010426 asphalt Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000003679 aging effect Effects 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 239000007822 coupling agent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000002825 nitriles Chemical class 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- ZBBLRPRYYSJUCZ-GRHBHMESSA-L (z)-but-2-enedioate;dibutyltin(2+) Chemical compound [O-]C(=O)\C=C/C([O-])=O.CCCC[Sn+2]CCCC ZBBLRPRYYSJUCZ-GRHBHMESSA-L 0.000 description 1
- YCIGYTFKOXGYTA-UHFFFAOYSA-N 4-(3-cyanopropyldiazenyl)butanenitrile Chemical compound N#CCCCN=NCCCC#N YCIGYTFKOXGYTA-UHFFFAOYSA-N 0.000 description 1
- 206010003591 Ataxia Diseases 0.000 description 1
- 239000004709 Chlorinated polyethylene Substances 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000000412 dendrimer Substances 0.000 description 1
- 229920000736 dendritic polymer Polymers 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 238000003878 thermal aging Methods 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The application relates to the field of waterproof coiled materials, and particularly discloses a high-strength polyvinyl chloride waterproof coiled material and a preparation method thereof. The polyvinyl chloride waterproof coiled material comprises the following components in parts by weight: 80-120 parts of polyvinyl chloride resin, 0.8-1.6 parts of antioxidant, 1-2 parts of lubricant, 0.6-1.2 parts of stabilizer, 0.4-0.6 part of color master batch, 36-54 parts of plasticizer, 24-36 parts of inorganic filler and 25-30 parts of chopped carbon fiber; the preparation method comprises the following steps: and (3) uniformly mixing all the raw materials, plasticizing, extruding, shaping, cooling, traction and rolling to obtain the high-strength polyvinyl chloride waterproof coiled material. The polyvinyl chloride waterproof coiled material has excellent toughness, higher strength and wider application range, and is particularly suitable for waterproof engineering with larger base layer change.
Description
Technical Field
The application relates to the field of waterproof coiled materials, in particular to a high-strength polyvinyl chloride waterproof coiled material and a preparation method thereof.
Background
The waterproof coiled material is a flexible coiled building material product which is mainly used for building walls, roofs, tunnels, roads, landfill sites and the like, plays a role in resisting external rainwater and groundwater leakage, is used as a leakage-free connection between engineering foundations and buildings, is a first waterproof barrier of the whole engineering, and plays a vital role in the whole engineering. The waterproof coiled material can be divided into an asphalt waterproof coiled material, a high polymer modified asphalt waterproof coiled material and a synthetic high polymer waterproof coiled material according to different constituent materials. The synthetic polymer waterproof coiled material mainly comprises an ethylene propylene diene monomer waterproof coiled material, a polyvinyl chloride waterproof coiled material, a chlorinated polyethylene waterproof coiled material, a polyethylene polypropylene waterproof coiled material and the like. Among these waterproof rolls, polyvinyl chloride waterproof rolls are more economical and practical, and thus occupy a large specific gravity in the waterproof rolls.
The polyvinyl chloride waterproof coiled material is prepared by taking polyvinyl chloride resin as a main raw material, adding additives such as filler, stabilizer, colorant and the like, plasticizing, extruding, forming, cooling, traction, trimming, rolling and the like. At present, in order to enhance the plasticity of the polyvinyl chloride waterproof coiled material, the polyvinyl chloride waterproof coiled material can be strongly adapted to the deformation caused by the settlement of a base layer, and the plasticizer and the raw materials such as polyvinyl chloride resin are usually adopted for cooperation. However, it was found through repeated experiments that although the addition of the plasticizer can improve the toughness of the polyvinyl chloride waterproof roll, the tensile strength of the polyvinyl chloride waterproof roll is remarkably reduced.
Therefore, how to make the polyvinyl chloride waterproof coiled material have excellent toughness and higher strength is an important problem to be solved at present.
Disclosure of Invention
In order to solve the technical problems, the application provides a high-strength polyvinyl chloride waterproof coiled material and a preparation method thereof.
The application provides a high-strength polyvinyl chloride waterproof coiled material, which adopts the following technical scheme:
the high-strength polyvinyl chloride waterproof coiled material comprises the following raw materials in parts by weight:
80-120 parts of polyvinyl chloride resin;
0.8-1.6 parts of antioxidant;
1-2 parts of a lubricant;
0.6-1.2 parts of stabilizer;
0.4-0.6 part of color master batch;
36-54 parts of plasticizer;
24-36 parts of inorganic filler;
25-30 parts of chopped carbon fiber.
By adopting the technical scheme, the polyvinyl chloride waterproof coiled material is prepared by mixing polyvinyl chloride resin, an antioxidant, a lubricant, a stabilizer and color master batches. Meanwhile, a certain amount of plasticizer is added into the polyvinyl chloride waterproof coiled material, when the plasticizer is mixed with the polyvinyl chloride, molecular chains of the plasticizer can be inserted between polymer molecular chains, interaction force between the molecular chains is weakened, crystallinity of the polymer molecular chains is reduced, plasticity of the polyvinyl chloride waterproof coiled material is improved, the polyvinyl chloride waterproof coiled material is softer, and deformation caused by base layer settlement can be adapted to stronger.
In order to solve the problem of tensile strength reduction caused by the plasticizer, the application adopts inorganic filler to carry out filling modification on the polyvinyl chloride waterproof coiled material, and uses the stress concentration effect of the inorganic filler as a component bearing load to improve the tensile strength of the polyvinyl chloride waterproof coiled material. In addition, a certain amount of chopped carbon fibers are added into the polyvinyl chloride waterproof coiled material, and the chopped carbon fibers are matched with the inorganic filler by utilizing the high-strength characteristic of the chopped carbon fibers to be used as a reinforcing phase in the polyvinyl chloride waterproof coiled material, so that the tensile strength of the polyvinyl chloride waterproof coiled material is obviously improved. The length of the chopped carbon fiber is less than 6mm, the chopped carbon fiber is easy to disperse in a blending system, and proper orientation can be obtained in the molding process of the polyvinyl chloride waterproof coiled material, so that the reinforcing effect of the fiber is improved.
Preferably, the chopped carbon fibers are modified in the following manner:
immersing chopped carbon fibers in DMF solvent after oxidation, then adding DIPEA accelerator and HATU condensing agent, standing and activating for 15min-20min, adding PAMAM, carrying out light-proof reaction for 12h-14h at the rotating speed of 300r/min-350r/min, washing, extracting and drying to obtain PAMAM surface grafting modified chopped carbon fibers; wherein the volume ratio of the DIPEA accelerator to the DMF solvent is (1.0-1.2): 100; the mass volume ratio of the HATU condensing agent to the DMF solvent is 0.005g/ml to 0.007g/ml; the mass volume ratio of PAMAM to DMF solvent is 0.005g/ml-0.007g/ml.
By adopting the technical scheme, as the surface of the chopped carbon fiber is of a disordered layer graphite structure, the graphite crystallite size is large, the number of carbon atoms and polar functional groups with reactivity is small, and the surface is smooth, so that the interfacial adhesion between the chopped carbon fiber and the polyvinyl chloride resin is weak and is easy to damage. Therefore, the application carries out modification treatment on the chopped carbon fiber, can improve the specific surface area and the surface roughness of the chopped carbon fiber, increase the physical condensation action between the surface of the chopped carbon fiber and the polyvinyl chloride resin, and improve the interface performance between the surface of the chopped carbon fiber and the polyvinyl chloride resin, thereby further improving the tensile strength of the polyvinyl chloride waterproof coiled material.
According to the application, PAMAM (polyamide-amine dendritic polymer) is grafted on the surface of the chopped carbon fiber, so that the surface of the chopped carbon fiber generates rich polar functional groups, and an interface layer between the fiber and the resin is formed in the polyvinyl chloride waterproof coiled material, so that the interface bonding strength between the chopped carbon fiber and the polyvinyl chloride resin is improved. Further, before modifying the chopped carbon fiber, the surface of the chopped carbon fiber is subjected to reinforcement treatment, the chopped carbon fiber enters a normal pressure chemical vapor deposition system under the traction of a motor, argon is used as carrier gas, the flow of the argon is regulated to be 500ml/min, the flow of ethanol is regulated to be 30ml/min, and the chopped carbon fiber is treated for 5min at the pyrolysis temperature of 800 ℃. Compared with the traditional chopped carbon fiber surface modification method, the chopped carbon fiber modification method can reduce the possibility of strength damage of the chopped carbon fiber in the modification process, so that the reinforcing effect of the chopped carbon fiber on the polyvinyl chloride waterproof coiled material is further improved.
Preferably, the inorganic filler comprises (20-30) calcium carbonate and liquid nitrile rubber modified hydrotalcite in a weight ratio of (4-6).
By adopting the technical scheme, the tensile strength of the polyvinyl chloride waterproof coiled material is improved by adopting the calcium carbonate and the liquid nitrile rubber modified hydrotalcite as the inorganic filler. Wherein, the calcium carbonate exists as rigid particles in the polyvinyl chloride waterproof coiled material to stop crack growth in the polyvinyl chloride resin, so that the polyvinyl chloride waterproof coiled material can bear higher load. Meanwhile, the application adopts the liquid nitrile rubber to carry out coating modification on the surface of the hydrotalcite, and the hydrotalcite can be uniformly dispersed in a blending system by virtue of good compatibility of the liquid nitrile rubber and the polyvinyl chloride resin, so that the interfacial strength of the hydrotalcite and the polyvinyl chloride resin is improved, and the tensile strength of the polyvinyl chloride waterproof coiled material is improved.
Preferably, the liquid nitrile rubber modified hydrotalcite is prepared by the following method:
mixing and stirring hydrotalcite with the weight ratio of (80-90) to (10-20) and liquid nitrile rubber for 2-5 min at the rotating speed of 24000r/min-25000r/min to obtain the liquid nitrile rubber modified hydrotalcite.
Preferably, the calcium carbonate is heavy calcium carbonate.
By adopting the technical scheme, as the heavy calcium carbonate is prepared by a mechanical method, the surface is rough, the particle size is smaller, the specific surface area is larger, the smaller the particle size is, the larger the specific surface area of the filler is, the larger the base area of the filler is, the larger the binding force is, and the better the reinforcing effect is. Therefore, the heavy calcium carbonate is used as the inorganic filler, and the reinforcing effect on the polyvinyl chloride waterproof coiled material is higher than that of the light calcium carbonate under the condition of the same filling amount.
Preferably, the heavy calcium carbonate is modified by the following method:
dissolving heavy calcium carbonate in water at 75-80 ℃, adding n-butyl titanate, uniformly mixing, adding azodicarbonitrile and methyl methacrylate, magnetically stirring for 3.5-4.0 h, filtering, washing and drying to obtain modified heavy calcium carbonate; wherein the mass volume ratio of the heavy calcium carbonate to the n-butyl titanate is 50g/ml-100g/ml; the mass volume ratio of the heavy calcium carbonate to the methyl methacrylate is 5g/ml-10g/ml; the mass volume ratio of the azodicarbonyl and the methyl methacrylate is 0.12g/ml-0.15g/ml.
According to the technical scheme, in order to further improve the interface strength of the heavy calcium carbonate and the polyvinyl chloride resin, the application adopts n-butyl titanate as a coupling agent, methyl methacrylate is adsorbed on the surface of the heavy calcium carbonate, and azodicarbonitrile is used as an initiator to polymerize and modify the heavy calcium titanate. Compared with the traditional method for modifying the heavy calcium carbonate by adopting the coupling agent, the modification method provided by the application can greatly improve the modification effect of the heavy calcium carbonate, thereby improving the interface strength of the heavy calcium carbonate and the polyvinyl chloride resin.
Preferably, the plasticizer comprises trioctyl trimellitate and dioctyl phthalate in a weight ratio of (1.5-2.0): 1.
By adopting the technical scheme, the application adopts the trioctyl trimellitate and the dioctyl phthalate to be mixed and matched for use, fully plays the synergistic effect of the trioctyl trimellitate and the dioctyl phthalate, not only can greatly improve the breaking elongation of the polyvinyl chloride waterproof coiled material, but also can make up the defect of the migration of the dioctyl trimellitate and the dioctyl phthalate by utilizing the high-temperature and migration resistance of the trioctyl trimellitate, thereby improving the ageing resistance of the polyvinyl chloride waterproof coiled material.
Preferably, the raw materials further comprise 16-24 parts by weight of nitrile rubber powder.
By adopting the technical scheme, the PVC waterproof coiled material is further added with the nitrile rubber powder to be matched with the plasticizer, so that the tensile strength and the elongation at break of the PVC waterproof coiled material can be further improved, the defect that the micromolecular plasticizer is easy to migrate is overcome, and the durability of the PVC waterproof coiled material is improved.
Preferably, the polyvinyl chloride resin has a polymerization degree of 1300 to 1500.
By adopting the technical scheme, the polyvinyl chloride resin with high polymerization degree has high molecular weight, high acting force among molecular chains, small relative sliding and difficult deformation, so that the tensile strength and the elongation at break of the polyvinyl chloride waterproof coiled material can be improved by adopting the polyvinyl chloride resin with the polymerization degree of 1300-1500.
In a second aspect, the application provides a preparation method of a high-strength polyvinyl chloride waterproof coiled material, which comprises the following steps: and (3) uniformly mixing all the raw materials, plasticizing, extruding, shaping, cooling, traction and rolling to obtain the high-strength polyvinyl chloride waterproof coiled material.
By adopting the technical scheme, all raw materials are uniformly mixed in a high-speed mixer, then are put into a double-screw extruder for melt blending and extrusion, sheets with different thicknesses are obtained through forming by a three-roll machine, and the polyvinyl chloride waterproof coiled material is obtained through traction and rolling after cooling. The preparation method disclosed by the application is simple in steps, easy to operate and suitable for large-scale industrial development.
In summary, the application has the following beneficial technical effects:
1. the polyvinyl chloride waterproof coiled material has excellent toughness, higher strength and wider application range, and is particularly suitable for waterproof engineering with larger base layer change;
2. the preparation method of the polyvinyl chloride waterproof coiled material has simple steps, is easy to operate, has easily available raw materials, and is suitable for large-scale industrialized development.
Detailed Description
The present application will be described in further detail with reference to examples and comparative examples.
The antioxidant of the application can adopt one or more of antioxidant 1010, antioxidant BHT and antioxidant HLS, and the antioxidant is specifically antioxidant 1010 in the following examples and comparative examples;
the lubricant of the present application may be mineral oil or vegetable oil, and in the following examples and comparative examples, the lubricant is specifically paraffin oil;
the stabilizer of the present application may be one or more of dibutyltin dilaurate, dibutyltin maleate, calcium stearate, magnesium stearate, and in the following examples and comparative examples, the stabilizer is specifically calcium stearate;
the color master batch of the present application may be selected according to actual production requirements, and in the following examples and comparative examples, the color master batch is specifically a white color master batch.
<Material source>
The raw materials used in the application are all commercial products except special descriptions, and specifically are:
polyvinyl chloride resin, available from atabase huiteng chemical company, inc;
antioxidant 1010, available from Nanjing Milan New Material Co., ltd;
paraffin oil, purchased from Shandong Help friend lubrication technologies Co., ltd;
calcium stearate, produced from hebei lingshou county;
color master batch purchased from Qingdao Yi and Chang plastics Co., ltd.) and white in color;
chopped carbon fiber available from Toli New Material (Guangdong) limited with a length of 3mm-6mm;
DMF solvent, available from Shandong Texi chemical Co., ltd;
DIPEA accelerator (N, N-diisopropylethylamine), CAS:7087-68-5, available from Shanghai Jizhuizhu Biochemical technologies Co., ltd; HATU condensing agent, CAS:148893-10-1, available from Hubei chemical engineering Co., ltd;
PAMAM available from Wired morning source molecular New Material Co., ltd., algebraic generation 1.0, brand CYD-110A, terminal group-NH 2 ；
Liquid nitrile rubber, available from atanan two-ply chemical industry limited;
heavy calcium carbonate, produced from hebei ling shou county;
light calcium carbonate, produced from Hebei Lingshou county;
hydrotalcite purchased from Henan Wanshan New Material technology Co., ltd;
n-butyl titanate, available from Nanjing Techner, inc.;
azobisbutyronitrile, available from Shandong Kunbo biotechnology Co., ltd;
methyl methacrylate, available from ataxia san en chemical company, inc;
trioctyl trimellitate, purchased from a new materials science and technology company, a city of Weifang;
dioctyl phthalate, available from Jinan Haokun chemical industry Co., ltd;
nitrile rubber powder, available from Dongguan New Material Co., ltd.
<Examples>
Examples 1.1 to 1.3
The preparation method of the high-strength polyvinyl chloride waterproof coiled material comprises the following steps:
firstly, putting all raw materials into a high-speed mixer for uniformly mixing and stirring, discharging, wherein the specific content of each raw material is shown in table 1, then putting into a hopper of a double-screw extruder, carrying out melt blending and extrusion at the temperature of (140+/-20), then carrying out three-roll forming to obtain a sheet with the thickness of 1.5mm, cooling to the temperature of (50+/-10), and carrying out traction and winding to obtain the high-strength polyvinyl chloride waterproof coiled material; wherein, the polymerization degree of the polyvinyl chloride resin in examples 1.1 to 1.3 is 1000.
Table 1 raw material usage table units: g
| Project | Example 1.1 | Example 1.2 | Example 1.3 |
| Polyvinyl chloride resin | 80 | 120 | 100 |
| Antioxidant 1010 | 1.6 | 0.8 | 1.2 |
| Paraffin oil | 1 | 2 | 1.5 |
| Calcium stearate | 1.2 | 0.6 | 0.9 |
| Color master batch | 0.4 | 0.6 | 0.5 |
| Dioctyl phthalate | 54 | 36 | 45 |
| Light calcium carbonate | 24 | 36 | 30 |
| Chopped carbon fiber | 30 | 25 | 27.5 |
Example 2.1
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 1.3 in that: the chopped carbon fibers are modified in the following way:
immersing chopped fibers in nitric acid at 60 ℃ for oxidation for 4 hours, washing and drying, immersing the oxidized chopped carbon fibers in DMF solvent, adding DIPEA accelerator and HATU condensing agent, standing and activating for 15 minutes, adding PAMAM, carrying out light-shielding reaction for 12 hours at the rotating speed of 350r/min, repeatedly washing with water after the reaction is finished, extracting with acetone for 12 hours, and drying to obtain PAMAM surface grafting modified chopped carbon fibers; wherein, the volume ratio of the DIPEA accelerator to the DMF solvent is 1:100; the mass volume ratio of HATU condensing agent to DMF solvent is 0.007g/ml; the mass volume ratio of PAMAM to DMF solvent was 0.005g/ml.
Example 2.2
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 1.3 in that: the chopped carbon fibers are modified in the following way:
immersing chopped fibers in nitric acid at 60 ℃ for oxidation for 4 hours, washing and drying, immersing the oxidized chopped carbon fibers in DMF solvent, adding DIPEA accelerator and HATU condensing agent, standing and activating for 20 minutes, adding PAMAM, carrying out light-shielding reaction for 14 hours at the rotating speed of 300r/min, repeatedly washing with water after the reaction is finished, extracting with acetone for 12 hours, and drying to obtain PAMAM surface grafting modified chopped carbon fibers; wherein the volume ratio of the DIPEA accelerator to the DMF solvent is 1.2:100; the mass volume ratio of the HATU condensing agent to the DMF solvent is 0.005g/ml; the mass to volume ratio of PAMAM to DMF solvent was 0.007g/ml.
Example 2.3
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 2.2 in that: before the oxidation treatment of the chopped carbon fiber, the surface of the chopped carbon fiber is subjected to reinforcement treatment, specifically, the chopped carbon fiber enters a normal pressure chemical vapor deposition system under the traction of a motor, argon is used as carrier gas, the flow rate of the argon is regulated to be 500ml/min, the flow rate of ethanol is regulated to be 30ml/min, and the chopped carbon fiber is treated for 5min at the pyrolysis temperature of 800 ℃.
Example 2.4
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 1.3 in that: the chopped carbon fibers are modified in the following way: immersing chopped fibers into nitric acid at 60 ℃ for oxidation for 4 hours, cleaning and drying, immersing the oxidized chopped carbon fibers in a silane coupling agent KH550 with the mass fraction of 2% for 3 hours, and then putting the chopped carbon fibers into an oven at 110 ℃ for drying to obtain the modified chopped carbon fibers.
Example 3.1
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 1.3 in that: the inorganic filler comprises light calcium carbonate and liquid nitrile rubber modified hydrotalcite in a weight ratio of 20:6; wherein, the light calcium carbonate is 23.06g, and the liquid nitrile rubber modified hydrotalcite is 6.92g;
the preparation method of the liquid nitrile rubber modified hydrotalcite comprises the following steps:
and mixing and stirring 12g of hydrotalcite and 3g of liquid nitrile rubber for 5min at the rotating speed of 24000r/min to obtain the liquid nitrile rubber modified hydrotalcite.
Example 3.2
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 1.3 in that: the inorganic filler comprises light calcium carbonate and liquid nitrile rubber modified hydrotalcite in a weight ratio of 30:4; wherein, the light calcium carbonate is 26.47g, and the liquid nitrile rubber modified hydrotalcite is 3.53g;
the preparation method of the liquid nitrile rubber modified hydrotalcite comprises the following steps:
at 25000r/min, 27g of hydrotalcite and 3g of liquid nitrile rubber are mixed and stirred for 2min to obtain liquid nitrile rubber modified hydrotalcite.
Example 3.3
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 1.3 in that: the inorganic filler comprises light calcium carbonate and hydrotalcite in a weight ratio of 30:4; wherein, the light calcium carbonate is 26.47g and the hydrotalcite is 3.53g.
Example 4
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 3.2 in that: heavy calcium carbonate was used instead of light calcium carbonate, the remainder being the same as in example 3.2.
Example 5.1
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 4 in that: the heavy calcium carbonate is modified by the following steps: at 75 ℃, 26.47g of heavy calcium carbonate is dissolved in water, 0.5294ml of n-butyl titanate is added to be mixed uniformly, 0.635g of azodicarbonyl nitrile and 5.294ml of methyl methacrylate are added to be stirred magnetically for 4.0h, and the mixture is filtered, washed and dried while hot to obtain the modified heavy calcium carbonate.
Example 5.2
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 4 in that: the heavy calcium carbonate is modified by the following steps: at 80 ℃, 26.47g of heavy calcium carbonate is dissolved in water, 0.2647ml of n-butyl titanate is added to be mixed uniformly, 0.397g of azodicarbonyl nitrile and 2.647ml of methyl methacrylate are added to be stirred magnetically for 3.5h, and the mixture is filtered, washed and dried while being hot to obtain the modified heavy calcium carbonate.
Example 5.3
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 4 in that: the heavy calcium carbonate is modified by the following steps: 26.47g of heavy calcium carbonate and 0.397g of sodium stearate are mixed and stirred for 50min at the temperature of 70 ℃ and the rotating speed of 700r/min, and then cooled and discharged to obtain the modified heavy calcium carbonate.
Example 6.1
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 1.3 in that: the plasticizer included trioctyl trimellitate and dioctyl phthalate in a weight ratio of 1.5:1, wherein trioctyl trimellitate was 27g and dioctyl phthalate was 18g.
Example 6.2
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 1.3 in that: the plasticizer comprises trioctyl trimellitate and dioctyl phthalate in a weight ratio of 2:1, wherein the trioctyl trimellitate is 30g, and the dioctyl phthalate is 15g.
Example 6.3
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 1.3 in that: the plasticizer comprises trioctyl trimellitate and dioctyl phthalate in a weight ratio of 0.8:1, wherein the trioctyl trimellitate is 20g, and the dioctyl phthalate is 25g.
Example 6.4
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 1.3 in that: the plasticizer comprises trioctyl trimellitate and dioctyl phthalate in a weight ratio of 0.5:1, wherein the trioctyl trimellitate is 15g, and the dioctyl phthalate is 30g.
Example 6.5
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 1.3 in that: the plasticizer comprises tributyl citrate and dioctyl phthalate in a weight ratio of 2:1, wherein the tributyl citrate is 30g and the dioctyl phthalate is 15g.
Example 7.1
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 1.3 in that: 16g of nitrile rubber powder were also fed to the high-speed mixer, the remainder being the same as in example 1.3.
Example 7.2
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 1.3 in that: to the high-speed mixer was also added 24g of nitrile rubber powder, the remainder being the same as in example 1.3.
Example 8.1
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 1.3 in that: the polymerization degree of the polyvinyl chloride resin was 1300, and the rest was the same as in example 1.3.
Example 8.2
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 1.3 in that: the polymerization degree of the polyvinyl chloride resin was 1500, and the rest was the same as in example 1.3.
Example 8.3
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 1.3 in that: the polymerization degree of the polyvinyl chloride resin was 2000, and the rest was the same as in example 1.3.
Example 8.4
The preparation method of the high-strength polyvinyl chloride waterproof coiled material is different from that of the embodiment 1.3 in that: the polymerization degree of the polyvinyl chloride resin was 800, and the rest was the same as in example 1.3.
<Comparative example>
Comparative example 1
The difference from example 1.3 is that: chopped carbon fibers were not added, and the rest was the same as in example 1.3.
Comparative example 2
The difference from example 1.3 is that: the addition amount of the chopped carbon fibers was 20g, and the rest was the same as in example 1.3.
Comparative example 3
The difference from example 1.3 is that: the addition amount of the chopped carbon fibers was 50g, and the rest was the same as in example 1.3.
<Performance detection>
1. Tensile properties: the polyvinyl chloride waterproof coiled materials prepared in the examples 1-8 are subjected to the test method of the building waterproof coiled material part 9 according to GB/T328.9-2007 under standard test conditions: the method B in the high polymer waterproof coiled material tensile property is tested, a dumbbell I-shaped test piece which accords with GB/T528-2009 determination of tensile stress and strain properties of vulcanized rubber or thermoplastic rubber is adopted, and the tensile speed is (250+/-50) mm/min;
2. impermeability to water: the polyvinyl chloride waterproof coiled materials prepared in the examples 1-8 are subjected to the test method of the building waterproof coiled material part 10 according to GB/T328.10-2007 under standard test conditions: the method B in the water impermeability of asphalt and macromolecule waterproof coiled materials is tested, a cross metal slotted groove disc is adopted, the pressure is 0.3MPa, and the pressure is kept for 2 hours;
3. heat aging properties: performing thermal aging test on the polyvinyl chloride waterproof coiled materials prepared in examples 1-8 according to GB/T18244-2022 "building waterproof material aging test method", wherein the temperature is (80+/-2) DEG C, the time is 672h, placing the treated test pieces under standard test conditions for 24h, then cutting two test pieces with longitudinal and transverse tensile properties on each test piece, performing test according to the tensile property method, and calculating the tensile strength retention rate according to a formula, wherein the result is accurate to 1%; the specific results of the above performance tests are shown in Table 2.
Table 2 table of performance test results
As can be seen from Table 1, the tensile strength of the PVC waterproof coiled material prepared in the embodiment 1 of the application can reach more than 15MPa, the elongation at break is more than 375%, and the tensile strength retention rate is more than 85%, which indicates that the PVC waterproof coiled material prepared in the application can maintain higher toughness and also has higher tensile strength.
The tensile strength of the polyvinyl chloride waterproof coiled material prepared in the embodiment 2.1-2.2 is greater than that of the embodiment 1.3, which shows that the modification treatment of the chopped carbon fiber can improve the dispersibility of the chopped carbon fiber in a system, thereby improving the tensile strength of the polyvinyl chloride waterproof coiled material.
The tensile strength of the polyvinyl chloride waterproof coiled material prepared in the embodiment 2.3 is greater than that of the embodiment 2.2, which shows that the surface reinforcement treatment is performed on the chopped carbon fiber before the modification treatment is performed on the chopped carbon fiber, so that the damage of the modification treatment on the chopped carbon fiber can be reduced, the reinforcing effect of the chopped carbon fiber is further improved, and the tensile strength of the polyvinyl chloride waterproof coiled material is further improved.
Although the tensile strength of the polyvinyl chloride waterproof coiled material prepared in the embodiment 2.4 is greater than that of the embodiment 1.3, the tensile strength of the polyvinyl chloride waterproof coiled material is smaller than that of the embodiment 2.1-2.3, which shows that the modification treatment of the application has better modification effect on the chopped carbon fiber, and the modified chopped carbon fiber has stronger reinforcing effect on the polyvinyl chloride waterproof coiled material.
The tensile strength of the polyvinyl chloride waterproof coiled material prepared in the embodiment 3.1-3.2 is greater than that of the embodiment 1.3, which shows that the tensile strength of the polyvinyl chloride waterproof coiled material can be further improved by adopting light calcium carbonate and liquid nitrile rubber modified hydrotalcite as inorganic filler.
Although the tensile strength of the polyvinyl chloride waterproof coiled material prepared in the embodiment 3.3 is greater than that of the embodiment 1.3, but less than that of the embodiment 3.1-3.2, the application proves that the dispersibility of hydrotalcite in a system can be improved by modifying hydrotalcite, so that the tensile strength of the polyvinyl chloride waterproof coiled material is further improved.
The tensile strength of the polyvinyl chloride waterproof coiled material prepared in the embodiment 4 is greater than that of the embodiment 3.2, which shows that the heavy calcium carbonate has better reinforcing effect on the polyvinyl chloride waterproof coiled material compared with the light calcium carbonate.
The tensile strength of the polyvinyl chloride waterproof coiled material prepared in the embodiment 5.1-5.2 is greater than that of the embodiment 4, which shows that the dispersibility of the heavy calcium carbonate in a system can be improved by modifying the heavy calcium carbonate, so that the tensile strength of the polyvinyl chloride waterproof coiled material is improved.
Although the tensile strength of the polyvinyl chloride waterproof coiled material prepared in the embodiment 5.3 is greater than that of the embodiment 4, the tensile strength of the polyvinyl chloride waterproof coiled material is smaller than that of the embodiments 5.1-5.2, which shows that the modification effect of the modified heavy calcium carbonate by the modification method is better, so that the enhancement effect of the modified heavy calcium carbonate on the polyvinyl chloride waterproof coiled material is better.
The elongation at break of the polyvinyl chloride waterproof coiled material prepared in the embodiment 6.1-6.2 is greater than that in the embodiment 1.3, and the tensile strength retention rate is greater than that in the embodiment 1.3, which shows that the plasticizer can be further improved in plasticizing effect by mixing trioctyl trimellitate and dioctyl phthalate, and meanwhile, the heat aging performance of the polyvinyl chloride waterproof coiled material can be improved.
Although the elongation at break and the tensile strength retention of the polyvinyl chloride waterproof coiled material prepared in examples 6.3-6.4 are both greater than those of example 1.3, but lower than those of examples 6.1-6.2, the application is proved to further control the weight ratio of trioctyl trimellitate to dioctyl phthalate, and the toughness and the heat aging performance of the polyvinyl chloride waterproof coiled material can be further improved.
The elongation at break of the polyvinyl chloride waterproof coiled material prepared in the example 6.5 is lower than that of the example 1.3, and the tensile strength retention rate is almost the same as that of the example 1.3, which shows that the toughness and the heat aging performance of the polyvinyl chloride waterproof coiled material can be improved by specifically selecting trioctyl trimellitate to be matched with dioctyl phthalate for use.
The tensile strength, elongation at break and retention rate of the tensile strength of the polyvinyl chloride waterproof coiled material prepared in the embodiment 7 are all larger than those of the embodiment 1.3, which shows that the tensile property and heat aging property of the polyvinyl chloride waterproof coiled material can be further improved by adding the nitrile rubber powder into the polyvinyl chloride waterproof coiled material.
The tensile strength and the elongation at break of the polyvinyl chloride waterproof coiled material prepared in the embodiment 8.1-8.2 are both greater than those of the embodiment 1.3, which shows that the tensile property of the polyvinyl chloride waterproof coiled material can be further improved by further using the polyvinyl chloride resin with the polymerization degree of 1300-1500.
Although the tensile strength and elongation at break of the polyvinyl chloride waterproof roll prepared in example 8.3 are both greater than those of example 1.3, the tensile strength and elongation at break are almost the same as those of example 8.2, which shows that the effect of improving the tensile property of the polyvinyl chloride waterproof roll is not great when the polymerization degree of the polyvinyl chloride resin is greater than 1500, so that the polyvinyl chloride resin with the polymerization degree of 1300-1500 is selected in consideration of comprehensive cost.
The tensile strength and elongation at break of the polyvinyl chloride waterproof roll prepared in example 8.4 are smaller than those of the polyvinyl chloride waterproof roll prepared in example 1.3, which shows that the polymerization degree of the polyvinyl chloride resin is too low, and the tensile property of the polyvinyl chloride waterproof roll is reduced.
The tensile strength and elongation at break of the polyvinyl chloride waterproof coiled materials prepared in comparative examples 1 to 3 are smaller than those of example 1.3, which shows that the tensile properties of the polyvinyl chloride waterproof coiled materials are reduced without adding chopped carbon fibers or without adding chopped carbon fibers in the range of the application.
The embodiments of the present application are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (10)
1. The high-strength polyvinyl chloride waterproof coiled material is characterized by comprising the following raw materials in parts by weight:
80-120 parts of polyvinyl chloride resin;
0.8-1.6 parts of antioxidant;
1-2 parts of a lubricant;
0.6-1.2 parts of stabilizer;
0.4-0.6 part of color master batch;
36-54 parts of plasticizer;
24-36 parts of inorganic filler;
25-30 parts of chopped carbon fiber.
2. The high-strength polyvinyl chloride waterproof roll as claimed in claim 1, wherein the chopped carbon fibers are modified in the following manner:
immersing chopped carbon fibers in DMF solvent after oxidation, then adding DIPEA accelerator and HATU condensing agent, standing and activating for 15min-20min, adding PAMAM, carrying out light-proof reaction for 12h-14h at the rotating speed of 300r/min-350r/min, washing, extracting and drying to obtain PAMAM surface grafting modified chopped carbon fibers; wherein the volume ratio of the DIPEA accelerator to the DMF solvent is (1.0-1.2): 100; the mass volume ratio of the HATU condensing agent to the DMF solvent is 0.005g/ml to 0.007g/ml; the mass volume ratio of PAMAM to DMF solvent is 0.005g/ml-0.007g/ml.
3. The high-strength polyvinyl chloride waterproof coiled material according to claim 1, wherein the inorganic filler comprises (20-30): 4-6 by weight of calcium carbonate and liquid nitrile rubber modified hydrotalcite.
4. The high-strength polyvinyl chloride waterproof coiled material according to claim 3, wherein the liquid nitrile rubber modified hydrotalcite is prepared by the following method:
mixing and stirring hydrotalcite with the weight ratio of (80-90) to (10-20) and liquid nitrile rubber for 2-5 min at the rotating speed of 24000r/min-25000r/min to obtain the liquid nitrile rubber modified hydrotalcite.
5. A high strength polyvinyl chloride waterproof roll as claimed in claim 3, wherein the calcium carbonate is heavy calcium carbonate.
6. The high-strength polyvinyl chloride waterproof coiled material according to claim 5, wherein the heavy calcium carbonate is modified by the following method:
dissolving heavy calcium carbonate in water at 75-80 ℃, adding n-butyl titanate, uniformly mixing, adding azodicarbonitrile and methyl methacrylate, magnetically stirring for 3.5-4.0 h, filtering, washing and drying to obtain modified heavy calcium carbonate; wherein the mass volume ratio of the heavy calcium carbonate to the n-butyl titanate is 50g/ml-100g/ml; the mass volume ratio of the heavy calcium carbonate to the methyl methacrylate is 5g/ml-10g/ml; the mass volume ratio of the azodicarbonyl and the methyl methacrylate is 0.12g/ml-0.15g/ml.
7. The high-strength polyvinyl chloride waterproof roll as claimed in claim 1, wherein the plasticizer comprises trioctyl trimellitate and dioctyl phthalate in a weight ratio of (1.5-2.0) 1.
8. The high-strength polyvinyl chloride waterproof roll as claimed in claim 1, wherein the raw materials further comprise 16-24 parts by weight of nitrile rubber powder.
9. The high-strength polyvinyl chloride waterproof roll as claimed in claim 1, wherein the polymerization degree of the polyvinyl chloride resin is 1300-1500.
10. A method for preparing the high-strength polyvinyl chloride waterproof coiled material according to any one of claims 1 to 9, which is characterized by comprising the following steps:
and (3) uniformly mixing all the raw materials, plasticizing, extruding, shaping, cooling, traction and rolling to obtain the high-strength polyvinyl chloride waterproof coiled material.
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