CN116178823A - Compression-resistant corrosion-resistant chemical barrel and preparation method thereof - Google Patents
Compression-resistant corrosion-resistant chemical barrel and preparation method thereof Download PDFInfo
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- CN116178823A CN116178823A CN202310204505.9A CN202310204505A CN116178823A CN 116178823 A CN116178823 A CN 116178823A CN 202310204505 A CN202310204505 A CN 202310204505A CN 116178823 A CN116178823 A CN 116178823A
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- 239000000126 substance Substances 0.000 title claims abstract description 107
- 238000005260 corrosion Methods 0.000 title claims abstract description 106
- 230000007797 corrosion Effects 0.000 title claims abstract description 104
- 230000006835 compression Effects 0.000 title claims abstract description 51
- 238000007906 compression Methods 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title abstract description 67
- 239000000945 filler Substances 0.000 claims abstract description 39
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 23
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 23
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 21
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 239000004014 plasticizer Substances 0.000 claims abstract description 14
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 12
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 12
- 229920002994 synthetic fiber Polymers 0.000 claims description 40
- 239000012209 synthetic fiber Substances 0.000 claims description 40
- 238000003756 stirring Methods 0.000 claims description 29
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 16
- 239000004005 microsphere Substances 0.000 claims description 16
- 229910052863 mullite Inorganic materials 0.000 claims description 16
- ZFOZVQLOBQUTQQ-UHFFFAOYSA-N Tributyl citrate Chemical group CCCCOC(=O)CC(O)(C(=O)OCCCC)CC(=O)OCCCC ZFOZVQLOBQUTQQ-UHFFFAOYSA-N 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 12
- 239000002270 dispersing agent Substances 0.000 claims description 12
- -1 polyethylene Polymers 0.000 claims description 11
- 238000005303 weighing Methods 0.000 claims description 11
- 229920001328 Polyvinylidene chloride Polymers 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 239000005033 polyvinylidene chloride Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 239000004709 Chlorinated polyethylene Substances 0.000 claims description 8
- 239000002033 PVDF binder Substances 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000000071 blow moulding Methods 0.000 claims description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 8
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 238000009987 spinning Methods 0.000 claims description 2
- 239000012257 stirred material Substances 0.000 claims 1
- 238000013329 compounding Methods 0.000 abstract description 6
- 229920002521 macromolecule Polymers 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 28
- 238000012360 testing method Methods 0.000 description 15
- 239000000463 material Substances 0.000 description 14
- 239000002253 acid Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 238000005336 cracking Methods 0.000 description 8
- 239000000975 dye Substances 0.000 description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000006229 carbon black Substances 0.000 description 5
- 239000004801 Chlorinated PVC Substances 0.000 description 4
- 229920000457 chlorinated polyvinyl chloride Polymers 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 229920002620 polyvinyl fluoride Polymers 0.000 description 4
- LZBCVRCTAYKYHR-UHFFFAOYSA-N acetic acid;chloroethene Chemical compound ClC=C.CC(O)=O LZBCVRCTAYKYHR-UHFFFAOYSA-N 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- HGAZMNJKRQFZKS-UHFFFAOYSA-N chloroethene;ethenyl acetate Chemical compound ClC=C.CC(=O)OC=C HGAZMNJKRQFZKS-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 206010059866 Drug resistance Diseases 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- RIVXQHNOKLXDBP-UHFFFAOYSA-K aluminum;hydrogen carbonate Chemical compound [Al+3].OC([O-])=O.OC([O-])=O.OC([O-])=O RIVXQHNOKLXDBP-UHFFFAOYSA-K 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
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- 239000000575 pesticide Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004408 titanium dioxide Substances 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
- 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
-
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- 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
Abstract
The application relates to the technical field of macromolecules, in particular to a compression-resistant corrosion-resistant chemical barrel and a preparation method thereof. The compression-resistant corrosion-resistant chemical barrel comprises the following raw materials in parts by weight: 70-90 parts of low-density polyethylene, 5-10 parts of high-density polyethylene, 13-18 parts of compression-resistant corrosion-resistant filler, 0.5-1.5 parts of antioxidant, 1-3 parts of plasticizer and 0.1-1 part of dye. The chemical barrel prepared by compounding the low-density polyethylene and the high-density polyethylene in the weight part range has the advantages of better compression resistance, wear resistance, corrosion resistance and the like.
Description
Technical Field
The application relates to the technical field of macromolecules, in particular to a compression-resistant corrosion-resistant chemical barrel and a preparation method thereof.
Background
The chemical bucket is a container, and is mostly manufactured by plastic, and is also called a plastic chemical bucket and a plastic chemical bucket; most of chemical barrels are integrally formed by blow molding polyethylene, and have the advantages of acid and alkali resistance, corrosion resistance, leakage resistance, no fading and the like, so that the chemical barrels are widely used in the fields of chemical industry, dyes, medicines, pesticides and the like.
When the chemical bucket is applied to loading chemical raw materials, liquid medicine and the like, such as hydrofluoric acid, concentrated hydrochloric acid, perchloric acid and the like, the corrosion acidity of the acids is strong, and when the chemical bucket is corroded for a long time, the phenomenon of corrosion of the chemical bucket can be caused, so that the chemical bucket is easy to crack or split and the like in the use process, and the phenomenon of leakage of the chemical raw materials in the chemical bucket is caused.
Furthermore, when the chemical barrels are in a transportation process or a use process, most chemical barrels are heavy, and the impact or the shaking can lead to the discharge of gas in chemical raw materials or liquid medicine, at the moment, the chemical barrels are swelled, and the phenomenon of explosion can be caused when the chemical barrels are serious, so that the practicability of the chemical barrels is reduced.
Disclosure of Invention
In order to enable a chemical barrel to obtain better corrosion resistance and compression resistance, the application provides a compression-resistant corrosion-resistant chemical barrel and a preparation method thereof.
In a first aspect, the application provides a compression-resistant corrosion-resistant chemical barrel, which comprises the following raw materials in parts by weight: 70-90 parts of low-density polyethylene
5-10 parts of high-density polyethylene
0.5-1.5 parts of antioxidant
1-3 parts of plasticizer
Dye 0.1-1 parts.
The chemical barrel prepared from the raw materials in the weight part range has good corrosion resistance, compression resistance and the like, and further can reduce the phenomena of cracking, corrosion and the like when the chemical barrel is applied to containing chemical materials or liquid medicines. The durability of the chemical barrel is improved.
Wherein, the low density polyethylene has better tensile strength, puncture resistance, tear resistance and other properties. High density polyethylene, HDPE for short, is a thermoplastic resin with high crystallinity and non-polarity. The composite material has good toughness, mechanical strength, environmental stress cracking resistance, wear resistance, acid resistance, alkali resistance, corrosion of various salts and the like, so that the performance of the composite material can be integrated through the composite use of the low-density polyethylene and the high-density polyethylene, the corrosion resistance, toughness, strength and the like of the chemical barrel are better, the phenomenon that the chemical barrel breaks in the use or transportation process is further reduced, the leakage phenomenon when the chemical barrel contains chemical raw materials is also reduced, and the practicability of the chemical barrel is further improved.
And the antioxidant can improve the oxidation resistance of the chemical barrel and reduce the corrosion of the chemical barrel. In addition, the plasticizer can play a plasticizing role, so that the processing efficiency of the chemical barrel is improved; the dye is one of titanium dioxide, carbon black and iron oxide red, so that the chemical barrel is rich in color.
Preferably, the plasticizer is tributyl citrate and/or DOP.
Preferably, 13-18 parts by weight of compression-resistant and corrosion-resistant filler is also included in the raw materials of the chemical bucket.
In order to further strengthen the corrosion resistance and the compressive property of chemical industry bucket, this application adds the corrosion-resistant packing of resistance to compression, and this corrosion-resistant packing of resistance to compression has higher toughening effect, intensity and corrosion resistance, and then can further improve the corrosion resistance and the compressive effect of chemical industry bucket, appears the phenomenon of seepage when reducing chemical industry bucket splendid attire chemical raw materials, also reduces the phenomenon such as damage, blasting, fracture appear in the in-process of transportation of chemical industry bucket.
Preferably, the compression-resistant corrosion-resistant filler is composed of the following raw materials in parts by weight:
mullite 3-7 parts
3.2-5.6 parts of synthetic fiber
2-5 parts of organic silicon microsphere
0.8 to 1.7 parts of dispersing agent
1-3 parts of compatilizer.
The raw material composition and the weight part range of the raw materials are preferably selected, and the compression-resistant and corrosion-resistant filler has the effects of corrosion resistance, compression resistance and the like, wherein mullite is a compound of aluminum bicarbonate and silicon dioxide, has good strength, wear resistance and the like, and further can strengthen the strength of the compression-resistant and corrosion-resistant filler and improve the compression-resistant effect of the chemical barrel. The synthetic fiber is a general name of various synthetic fibers, has better corrosion resistance, toughness, strength and the like, and the organic silicon microsphere is a multifunctional special organic silicon resin microsphere, has wear resistance and fluidity modification, and the dispersing agent has better dispersing effect, so that the raw material system of the compression-resistant and corrosion-resistant filler is fully and uniformly mixed. In addition, the compatilizer not only can improve the compatibility among mullite, synthetic fibers and organic silicon micropowder, but also can improve the compatibility of the anti-corrosion filler and low/high-density polyethylene.
Therefore, the compression-resistant corrosion-resistant filler prepared from mullite, synthetic fibers, organosilicon microspheres, a dispersing agent and a compatilizer has better corrosion resistance, wear resistance, toughness and strength, so that the toughness, strength, compression resistance, wear resistance and corrosion resistance of the chemical bucket can be enhanced, the corrosion phenomenon of the chemical bucket when the chemical bucket contains chemical raw materials is reduced, or the phenomena of breakage, cracking and explosion occur in the transportation process, and the practicability and durability of the chemical bucket are improved.
Preferably, the grain diameter of the mullite is 0.2-2 mu m, the grain diameter of the organosilicon microsphere is 25-45nm, the length of the synthetic fiber is 10-15 mu m, and the grain diameter is 0.03-0.08 mu m.
The synthetic fiber, the organic silicon microsphere, the mullite and the like with the particle size range and the length range are better selected, and the compressive corrosion resistant filler prepared after compounding the synthetic fiber, the organic silicon microsphere and the mullite has better toughness, strength, wear resistance and corrosion resistance, so that the compressive corrosion resistant filler is used for a chemical barrel, can enhance the toughness, strength, corrosion resistance and wear resistance of the chemical barrel, further causes the chemical barrel to corrode when containing chemical raw materials, enhances the compressive strength of the chemical barrel, and reduces the phenomena of breakage, abrasion, cracking and the like.
Preferably, the compatilizer is prepared from chlorinated polyethylene, epoxy acrylate and ternary vinyl chloride-vinyl acetate copolymer in a weight ratio of 1: (1.2-1.5): (1.1-1.3), wherein the dispersing agent is polyethylene wax.
The chlorinated polyethylene has better ageing resistance, corrosion resistance and good compatibility with other high polymer materials, and the epoxy acrylate has excellent solvent resistance, acid and alkali resistance, adhesive force, drug resistance, cohesiveness and toughness, and the ternary vinyl chloride-vinyl acetate resin has high toughness and corrosion resistance of vinyl chloride, strong adhesiveness and plasticity of vinyl acetate and better adhesion.
Therefore, the compatilizer obtained by compounding chlorinated polyethylene, epoxy acrylate and ternary vinyl chloride-acetate resin can not only improve the compatibility among mullite, synthetic fibers and organosilicon micropowder, but also improve the compatibility of the anti-corrosion filler and low/high-density polyethylene. The prepared chemical barrel has better strength, toughness, wear resistance and corrosion resistance. Meanwhile, the compression resistance effect of the chemical barrel is enhanced, and phenomena of corrosion, explosion, swelling and cracking and the like of the chemical barrel are reduced.
Preferably, the synthetic fiber is modified synthetic fiber, and the preparation of the modified synthetic fiber comprises the following raw materials in parts by weight:
1.0-1.8 parts of polytetrafluoroethylene is weighed according to parts by weight, heated to be molten, cooled to 180-200 ℃, 1.2-1.5 parts of polyvinylidene fluoride is added, stirring is carried out for 20-40min, the stirring speed is 800-1200r/min, cooled to 150-170 ℃, 3.6-4.8 parts of polyvinylidene chloride is added, stirring is uniform, and the stirring speed is 500-700r/min, thus obtaining the stirring material. And transferring the mixture to a screw extruder for extrusion, wherein the screw temperature is set as follows: the first section 225-235 ℃, the second section 240-250 ℃ and the fourth section 255-265 ℃ and the sixth section 235-245 ℃ to obtain a composite material, filtering impurities, hot air spinning and shearing to obtain the modified synthetic fiber.
The polytetrafluoroethylene obtained by the preparation method is a high molecular compound prepared by polymerizing tetrafluoroethylene, has excellent chemical stability, corrosion resistance, sealing property and ageing resistance, but has softer mechanical property, very low surface energy, usually shows non-tackiness and is not easy to be bonded with other polymers. Therefore, the polyvinylidene fluoride is heated until the polyvinyl fluoride is in a molten state, the melting temperature of the polyvinyl fluoride is about 300 ℃ generally, the temperature is reduced, and the polyvinylidene fluoride is added, so that the polyvinyl fluoride has good chemical resistance, processability, fatigue resistance, creep resistance and compatibility with resin, and is fully and uniformly mixed with the polyvinyl fluoride under high-speed shearing; and then polyvinylidene chloride is added to be easily mixed with the polyvinylidene chloride and the chlorinated polyvinyl chloride, and the polyvinylidene chloride has low permeability, toughness and the like, so that the prepared modified synthetic fiber has better corrosion resistance, toughness, strength and the like. The chemical barrel has better corrosion resistance and compression resistance, and reduces the phenomenon of corrosion or cracking in the use process when the chemical barrel contains strong acid.
Preferably, the compression-resistant corrosion-resistant filler is prepared by the following steps: according to the weight portions, 3 to 7 portions of mullite, 3.2 to 5.6 portions of synthetic fiber, 2 to 5 portions of organosilicon microsphere, 0.8 to 1.7 portions of dispersing agent and 1 to 3 portions of compatilizer are uniformly mixed, heated to 130 to 150 ℃, stirred for 10 to 20 minutes, cooled, crushed and sieved for 80 to 150 meshes, and the compression-resistant and corrosion-resistant filler is obtained.
The compression-resistant corrosion-resistant filler obtained by the preparation method is used for chemical barrels, and has better wear resistance, corrosion resistance, compression resistance and the like.
In a second aspect, the application provides a preparation method of a compression-resistant corrosion-resistant chemical barrel, which adopts the following technical scheme: weighing 70-90 parts of low-density polyethylene, 5-10 parts of high-density polyethylene, 13-18 parts of compression-resistant corrosion-resistant filler, 1-3 parts of plasticizer and 0.5-1.5 parts of antioxidant according to parts by weight, uniformly mixing, and blow molding to obtain the chemical bucket.
Preferably, the preparation method of the compression-resistant corrosion-resistant chemical bucket comprises the following steps: weighing 70-90 parts of low-density polyethylene, 5-10 parts of high-density polyethylene, 13-18 parts of compression-resistant corrosion-resistant filler, 1-3 parts of plasticizer and 0.5-1.5 parts of antioxidant according to parts by weight, uniformly mixing, and blow molding to obtain the chemical bucket.
The modified barrel prepared by the preparation method has better corrosion resistance, toughness, wear resistance and the like.
In summary, the present application has the following beneficial effects:
1. the low-density polyethylene and the high-density polyethylene are used in a compounding way, so that the performances of the chemical bucket can be combined, and the corrosion resistance, toughness, strength and the like of the chemical bucket are good. And then strengthen the compressive effect of chemical industry bucket, reduce its phenomenon that appears damaging, also reduce the chemical industry bucket and appear the phenomenon that corrodes at splendid attire strong acid, improve the practicality of chemical industry bucket.
2. The compression-resistant and corrosion-resistant filler obtained by compounding mullite, synthetic fibers, organic silicon microspheres, a dispersing agent and a compatilizer has better corrosion resistance, toughness, strength, wear resistance and the like. Further enhance the compressive property and corrosion resistance of the chemical industry, reduce the phenomenon of corrosion when the chemical industry barrel contains strong acid, also reduce the phenomena of abrasion, breakage, explosion and the like of the chemical industry barrel in the transportation process, and improve the practicability of the chemical industry barrel.
3. The modified composite fiber obtained by compounding polytetrafluoroethylene, polyvinylidene chloride and polyvinylidene chloride is used for compression-resistant and corrosion-resistant filler, so that the compression-resistant and corrosion-resistant filler has better corrosion resistance, strength, toughness, wear resistance and the like, the compression resistance and corrosion resistance of the chemical bucket are improved, and the phenomena of corrosion or breakage and the like are reduced.
Detailed Description
The present application is further described in detail below in connection with the preparation examples and examples.
Performance parameters of a portion of the feedstock;
TABLE 1 sources of partial raw materials
Preparation example of modified synthetic fiber
Preparation example 1
A modified synthetic fiber comprising the steps of: weighing 1.0kg of polytetrafluoroethylene, heating to melt, cooling to 180 ℃, adding 1.2kg of polyvinylidene fluoride, stirring for 20min at a stirring rate of 800r/min, cooling to 150 ℃, adding 3.6kg of polyvinylidene chloride and 5kg of chlorinated polyvinyl chloride, and stirring for 30min at a stirring rate of 500r/min; obtaining a stirring material, transferring the stirring material to a screw extruder for extrusion, and setting the screw temperature of the screw extruder to be: the first section 225 ℃, the second section to the fourth section 240 ℃, the fifth section 255 ℃ and the sixth section 235 ℃ to obtain a composite material, then placing the composite material into a filter to filter impurities, then placing the filter into a filament drawing device to carry out hot air filament drawing to obtain filaments, and then cutting the obtained synthetic filaments into filaments with the length of 10 mu m by a cutting device to obtain the modified synthetic fibers.
Preparation example 2
A modified synthetic fiber comprising the steps of: weighing 1.5kg of polytetrafluoroethylene, heating to melt, cooling to 190 ℃, adding 1.4kg of polyvinylidene fluoride, stirring for 30min at a stirring rate of 1000r/min, cooling to 160 ℃, adding 4.2kg of polyvinylidene chloride and 6kg of chlorinated polyvinyl chloride, stirring for 40min at a stirring rate of 600r/min; obtaining a stirring material, transferring the stirring material to a screw extruder for extrusion, and setting the screw temperature of the screw extruder to be: the first section 230 ℃, the second section to the fourth section are 245 ℃, the fifth section 265 ℃ and the sixth section 240 ℃ to obtain a composite material, the composite material is placed into a filter to filter impurities, then a filament drawing device is placed into the filter to carry out hot air filament drawing to obtain filaments, and the obtained synthetic filaments are cut into filaments with the length of 12 mu m through a cutting device to obtain the modified synthetic fibers.
Preparation example 3
A modified synthetic fiber comprising the steps of: weighing 1.8kg of polytetrafluoroethylene, heating to melt, cooling to 200 ℃, adding 1.5kg of polyvinylidene fluoride, stirring for 40min at a stirring rate of 1200r/min, cooling to 170 ℃, adding 4.8kg of polyvinylidene chloride and 7kg of chlorinated polyvinyl chloride, stirring for 40min at a stirring rate of 700r/min; obtaining a stirring material, transferring the stirring material to a screw extruder for extrusion, and setting the screw temperature of the screw extruder to be: the first section 235 ℃, the second section to the fourth section are 245 ℃, the fifth section 250 ℃ and the sixth section 245 ℃ to obtain a composite material, the composite material is placed into a filter to filter impurities, then a filament drawing device is placed into the filter to carry out hot air filament drawing to obtain filaments, and the obtained synthetic filaments are cut into filaments with the length of 15 mu m through a cutting device to obtain the modified synthetic fibers.
Preparation of comparative example
Preparation of comparative example 1
The preparation comparative example 1 is different from the preparation example 1 in that: the polyvinylidene fluoride is replaced by polytetrafluoroethylene in equal amount.
Preparation example of compression-resistant and corrosion-resistant filler
Preparation example 4
The compression-resistant corrosion-resistant filler is prepared by the following steps: the weight (kg) ratio is 1:1.2:1.1, weighing chlorinated polyethylene, epoxy acrylate and ternary vinyl chloride-acetate resin, and uniformly mixing to obtain a compatilizer; and then weighing 3kg of mullite, 3.2kg of synthetic fiber (commercially available), 2kg of organosilicon microspheres, 0.8kg of dispersing agent and 1kg of compatilizer, uniformly mixing, heating to 130 ℃, stirring for 10min to obtain mixed filler, cooling the mixed filler to room temperature, hardening, putting the mixed filler into a crushing inlet for crushing, and sieving the mixed filler with 80-150 meshes to obtain the compression-resistant corrosion-resistant filler.
Preparation example 5
Preparation 5 differs from preparation 4 in that: the weight (kg) ratio of chlorinated polyethylene, epoxy acrylate and ternary vinyl chloride-vinyl acetate resin is 1:1.3:1.2; mullite 5kg, synthetic fiber 4.5kg (commercially available), organosilicon microsphere 3kg, dispersant 1.3kg, and compatilizer 2kg.
Preparation example 6
Preparation example 6 differs from preparation example 5 in that: the weight (kg) ratio of chlorinated polyethylene, epoxy acrylate and ternary vinyl chloride-vinyl acetate resin is 1:1.5:1.3; 7kg of mullite, 5.6kg of synthetic fiber (commercially available), 5kg of organosilicon microspheres, 1.5kg of dispersing agent and 3kg of compatilizer.
Preparation examples 7 to 10
Preparation examples 7 to 10 differ from preparation example 5 in that modified synthetic fibers were used and the sources of the modified synthetic fibers were different, as shown in Table 1 in detail;
TABLE 1 sources of modified synthetic fibers of preparation examples 7-10
| Preparation example | Sources of modified synthetic fibers |
| Preparation example 7 | Preparation example 1 |
| Preparation example 8 | Preparation example 2 |
| Preparation example 9 | Preparation example 3 |
| Preparation example 10 | Preparation of comparative example 1 |
Preparation of comparative example
Preparation of comparative example 2
The preparation comparative example 2 is different from the preparation example 5 in that: the synthetic fibers are replaced with organosilicon microspheres in equal amounts.
Preparation of comparative example 3
The preparation of comparative example 3 differs from that of preparation 5 in that: the compatibilizers are replaced with synthetic fibers in equal amounts.
Preparation of comparative example 4
The preparation comparative example 4 differs from the preparation example 5 in that: the epoxy acrylate is replaced by ternary vinyl chloride-vinyl acetate copolymer in equal amount.
Examples
Example 1
The preparation of the compression-resistant corrosion-resistant chemical barrel comprises the following steps:
weighing 70kg of low-density polyethylene, 5kg of high-density polyethylene, 1kg of plasticizer (tributyl citrate), 0.5kg of antioxidant and 0.1kg of dye (white carbon black) into a mixer in sequence, uniformly mixing to obtain a mixed material, and collecting the mixed material into blow molding equipment for blow molding to obtain the chemical bucket.
Example 2
Example 2 differs from example 1 in that: 80kg of low-density polyethylene, 7kg of high-density polyethylene, 2kg of plasticizer (tributyl citrate), 1kg of antioxidant and 0.5kg of dye (white carbon black).
Example 3
Example 3 differs from example 1 in that: 90kg of low-density polyethylene, 10kg of high-density polyethylene, 3kg of plasticizer (tributyl citrate), 1.5kg of antioxidant and 1kg of dye (white carbon black).
Example 4
Example 4 differs from example 2 in that: also included was 1.3kg of the pressure-resistant and corrosion-resistant filler obtained in preparation example 4. The preparation of the compression-resistant corrosion-resistant chemical barrel comprises the following steps:
70kg of low-density polyethylene, 5kg of high-density polyethylene, 1kg of plasticizer (tributyl citrate), 13kg of compression-resistant corrosion-resistant filler obtained in preparation example 1, 0.5kg of antioxidant and 0.1kg of dye (white carbon black) are sequentially added into a mixer to be uniformly mixed to obtain a mixed material, and the mixed material is then collected into blow molding equipment to be blow molded to obtain a chemical barrel.
Example 5
Example 5 differs from example 4 in that: also included was 1.5kg of the pressure-resistant and corrosion-resistant filler obtained in preparation example 5.
Example 6
Example 6 differs from example 4 in that: also included was 1.8kg of the pressure-resistant and corrosion-resistant filler obtained in preparation example 6.
Examples 7 to 13
Examples 7-13 differ from example 5 in that: the materials are obtained by adopting different sources of compression-resistant and corrosion-resistant fillers, and are specifically shown in table 2;
TABLE 2 sources of compression and corrosion resistant fillers for examples 4-13
| Examples | Compression-resistant corrosion-resistant filler |
| Example 4 | Preparation example 4 |
| Example 5 | Preparation example 5 |
| Example 6 | Preparation example 6 |
| Example 7 | Preparation example 7 |
| Example 8 | Preparation example 8 |
| Example 9 | Preparation example 9 |
| Example 10 | Preparation example 10 |
| Example 11 | Preparation of comparative example 2 |
| Example 12 | Preparation of comparative example 3 |
| Example 13 | Preparation of comparative example 4 |
Comparative example
Comparative example 1
Comparative example 1 differs from example 1 in that: the low density polyethylene is replaced with the high density polyethylene in equal amounts.
Comparative example 2
Comparative example 2 is different from example 1 in that: the high density polyethylene is replaced with the low density polyethylene in equal amounts.
Performance test
Detection method/test method
1. Impact strength test: the mixed materials obtained in examples 1 to 13 and comparative examples 1 to 2 were put into an injection molding machine to be injection molded into test samples (the dimensions of the test samples for tensile strength were referred to the national standard GB/1040.1 to 2018, the dimensions of the test samples for impact strength were referred to the national standard GB/T1843-2008), the tensile strength was measured with reference to the national standard GB/T1040.1 to 2018, and the impact strength was measured with reference to the national standard GB/T1843-2008. The first batch of test samples is used for directly detecting the impact strength, and the recorded impact strength is A. And the other batch of test samples are placed in acid liquor (the acid liquor is composed of 0.5kg of hydrofluoric acid, 5kg of nitric acid with the mass fraction of 67% and 4.5kg of deionized water) for soaking, the temperature of the acid liquor is 35 ℃, after soaking for 24 hours, the test samples are taken out and washed clean, the test samples are placed in an oven at 50 ℃ for drying for 5 hours, after taking out, the test samples are placed for 2 hours, then the impact strength is detected, the impact strength is recorded as A1, and the corrosion rate is = [ (a-A1)/A ]. 100%, and the specific is shown in a table 3.
2. Corrosion resistance test: the barrels obtained in examples 1 to 13 and comparative examples 1 to 2 were cut into test bars of 20 x 10cm, immersed in a closed container filled with hydrofluoric acid, sealed and placed in an environment with a humidity of 50 ℃ and a temperature of 30 ℃, and after 7 days, whether the bars were corroded or not was observed, and when the bars were corroded, the test bars were unqualified, as shown in table 3.
3. Compression test: the chemical barrels obtained in examples 1 to 13 and comparative examples 1 to 2 were inspected, and 250Kpa of water pressure was injected into the chemical barrels, and the test was carried out for 30 minutes, and the test was qualified when no rupture or leakage occurred.
4. Drop test: the chemical barrels obtained in examples 1 to 13 and comparative examples 1 to 2 were filled with water, sealed, and allowed to fall freely from a 10m bench, and after falling, whether or not breakage, cracking, etc. occurred was checked.
TABLE 3 Experimental data for examples 1-13 and comparative examples 1-2
As can be seen from the combination of example 1 and comparative example 2 and the table 3, the tensile strength of comparative example 2 is lower than that of example 1, which means that the chemical barrels obtained by mixing the low density polyethylene with the high density polyethylene in a weight ratio have a good compression-resistant effect.
As can be seen from the combination of example 1 and comparative example 1 and Table 3, comparative example 1 has a higher corrosion rate than example 1, indicating that the tensile strength is improved by adding high-density polyethylene alone, but the corrosion resistance is reduced, indicating that the chemical bucket obtained by mixing low-density polyethylene with high-density polyethylene in a weight ratio has better corrosion resistance.
In combination with example 4 and example 2, it can be seen that the corrosion resistance and the pressure resistance effect of the chemical industry pass are increased when the pressure-resistant and corrosion-resistant filler is added.
In combination with example 4 and example 7, it can be seen that example 4 has a significantly lower tensile strength than example 7 and a higher corrosion rate. Furthermore, the modified synthetic fiber prepared by the method is used for the chemical barrel, so that the corrosion resistance, toughness and strength of the chemical barrel can be further enhanced, and further the phenomenon of corrosion or cracking of the chemical barrel can be reduced.
As can be seen from a comparison of examples 8 and examples 11-13, examples 11-13 have significantly lower tensile strengths than example 8 and have higher corrosion rates. Further, it is shown that the effect is better when three kinds of chlorinated polyethylene, epoxy acrylate and ternary vinyl chloride-acetate resin are compounded; and when the compatilizer or the synthetic fiber is not added, the corrosion resistance, strength and the like of the prepared chemical barrel are reduced.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.
Claims (10)
1. The compression-resistant corrosion-resistant chemical bucket is characterized by comprising the following raw materials in parts by weight:
70-90 parts of low-density polyethylene
5-10 parts of high-density polyethylene
0.5-1.5 parts of antioxidant
1-3 parts of plasticizer
Dye 0.1-1 parts.
2. The pressure-resistant corrosion-resistant chemical drum according to claim 1, wherein: the plasticizer is tributyl citrate and/or DOP.
3. The pressure-resistant corrosion-resistant chemical drum according to claim 1, wherein: 13-18 parts by weight of compression-resistant corrosion-resistant filler is also included in the raw materials of the chemical bucket.
4. A pressure and corrosion resistant chemical drum according to claim 3, wherein: the compression-resistant corrosion-resistant filler consists of the following raw materials in parts by weight:
mullite 3-7 parts
3.2-5.6 parts of synthetic fiber
2-5 parts of organic silicon microsphere
0.8 to 1.7 parts of dispersing agent
1-3 parts of compatilizer.
5. The pressure-resistant corrosion-resistant chemical drum according to claim 4, wherein: the grain diameter of the mullite is 0.2-2 mu m, the grain diameter of the organosilicon microsphere is 25-45nm, the length of the synthetic fiber is 10-15 mu m, and the grain diameter is 0.03-0.08 mu m.
6. The pressure-resistant corrosion-resistant chemical drum according to claim 5, wherein: the compatilizer is prepared from chlorinated polyethylene, epoxy acrylate and ternary vinyl chloride-vinyl acetate copolymer resin in a weight ratio of 1: (1.2-1.5): (1.1-1.3); the dispersing agent is polyethylene wax.
7. The pressure and corrosion resistant chemical drum of claim 6, wherein said synthetic fibers are modified synthetic fibers comprising the steps of:
weighing 1.0-1.8 parts by weight of polytetrafluoroethylene, heating to melt, cooling to 180-200 ℃, adding 1.2-1.5 parts by weight of polyvinylidene fluoride, stirring for 20-40min at a stirring rate of 800-1200r/min, cooling to 150-170 ℃, adding 3.6-4.8 parts by weight of polyvinylidene chloride, stirring uniformly, and stirring at a stirring rate of 500-700r/min; the stirred material was obtained and transferred to a screw extruder for extrusion, the screw temperature was set to: the first section 225-235 ℃, the second section 240-250 ℃ and the fourth section 255-265 ℃ and the sixth section 235-245 ℃ to obtain a composite material, filtering impurities, hot air spinning and shearing to obtain the modified synthetic fiber.
8. A pressure and corrosion resistant chemical drum according to any of claims 4-7, characterized in that said pressure and corrosion resistant filler is made by the steps of:
according to the weight portions, 3 to 7 portions of mullite, 3.2 to 5.6 portions of synthetic fiber, 2 to 5 portions of organosilicon microsphere, 0.8 to 1.7 portions of dispersing agent and 1 to 3 portions of compatilizer are uniformly mixed, heated to 130 to 150 ℃, stirred for 10 to 20 minutes, cooled, crushed and sieved for 80 to 150 meshes, and the compression-resistant and corrosion-resistant filler is obtained.
9. A pressure and corrosion resistant chemical drum according to claim 1 or 2, comprising the steps of:
weighing 70-90 parts of low-density polyethylene, 5-10 parts of high-density polyethylene, 1-3 parts of plasticizer and 0.5-1.5 parts of antioxidant according to parts by weight, uniformly mixing, and blow molding to obtain the chemical bucket.
10. A method for preparing a pressure-resistant corrosion-resistant chemical drum according to any one of claims 3 to 8, comprising the steps of:
weighing 70-90 parts of low-density polyethylene, 5-10 parts of high-density polyethylene, 13-18 parts of compression-resistant corrosion-resistant filler, 1-3 parts of plasticizer and 0.5-1.5 parts of antioxidant according to parts by weight, uniformly mixing, and blow molding to obtain the chemical bucket.
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Non-Patent Citations (3)
| Title |
|---|
| 周惠久 等: "《新材料辞典》", vol. 1, 31 December 1996, 上海科学技术文献出版社, pages: 288 * |
| 朱洪法: "《精细化工常用原材料手册》", vol. 1, 31 December 2003, 金盾出版社, pages: 417 - 418 * |
| 郭锺福 等: "《合成材料手册 性能•应用•品名•缩写》", vol. 1, 28 February 1986, 上海科学技术出版社, pages: 17 - 18 * |
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