CN115819741A - Corrosion-resistant high-strength manhole cover resin for gas station and preparation method of resin - Google Patents
Corrosion-resistant high-strength manhole cover resin for gas station and preparation method of resin Download PDFInfo
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- CN115819741A CN115819741A CN202111622596.5A CN202111622596A CN115819741A CN 115819741 A CN115819741 A CN 115819741A CN 202111622596 A CN202111622596 A CN 202111622596A CN 115819741 A CN115819741 A CN 115819741A
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- 239000011347 resin Substances 0.000 title claims abstract description 58
- 229920005989 resin Polymers 0.000 title claims abstract description 58
- 230000007797 corrosion Effects 0.000 title claims abstract description 38
- 238000005260 corrosion Methods 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000002253 acid Substances 0.000 claims abstract description 33
- 239000000203 mixture Substances 0.000 claims abstract description 28
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 150000008064 anhydrides Chemical class 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 27
- 239000007789 gas Substances 0.000 claims description 21
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 19
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 18
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 239000003963 antioxidant agent Substances 0.000 claims description 10
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical group CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 9
- 230000003078 antioxidant effect Effects 0.000 claims description 9
- 239000012752 auxiliary agent Substances 0.000 claims description 9
- 235000010354 butylated hydroxytoluene Nutrition 0.000 claims description 9
- 239000003431 cross linking reagent Substances 0.000 claims description 9
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000013067 intermediate product Substances 0.000 claims description 9
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 7
- 239000003054 catalyst Substances 0.000 claims description 7
- 239000003063 flame retardant Substances 0.000 claims description 7
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000006068 polycondensation reaction Methods 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 claims description 2
- 230000002745 absorbent Effects 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 125000005609 naphthenate group Chemical group 0.000 claims description 2
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 claims description 2
- UWJJYHHHVWZFEP-UHFFFAOYSA-N pentane-1,1-diol Chemical compound CCCCC(O)O UWJJYHHHVWZFEP-UHFFFAOYSA-N 0.000 claims description 2
- ARJOQCYCJMAIFR-UHFFFAOYSA-N prop-2-enoyl prop-2-enoate Chemical compound C=CC(=O)OC(=O)C=C ARJOQCYCJMAIFR-UHFFFAOYSA-N 0.000 claims description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 2
- 230000001502 supplementing effect Effects 0.000 claims description 2
- 150000002989 phenols Chemical class 0.000 claims 1
- 230000007062 hydrolysis Effects 0.000 abstract description 6
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 239000003513 alkali Substances 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 10
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000002131 composite material Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 238000013329 compounding Methods 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003574 free electron Substances 0.000 description 3
- 229920001225 polyester resin Polymers 0.000 description 3
- 239000004645 polyester resin Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 150000008065 acid anhydrides Chemical class 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 229940120693 copper naphthenate Drugs 0.000 description 2
- SEVNKWFHTNVOLD-UHFFFAOYSA-L copper;3-(4-ethylcyclohexyl)propanoate;3-(3-ethylcyclopentyl)propanoate Chemical group [Cu+2].CCC1CCC(CCC([O-])=O)C1.CCC1CCC(CCC([O-])=O)CC1 SEVNKWFHTNVOLD-UHFFFAOYSA-L 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- 150000008366 benzophenones Chemical class 0.000 description 1
- 150000001565 benzotriazoles Chemical class 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
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- 230000014759 maintenance of location Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010125 resin casting Methods 0.000 description 1
- 150000003870 salicylic acids Chemical class 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention relates to the field of IPC classified C08G, in particular to corrosion-resistant high-strength filling station well lid resin and a preparation method thereof. The corrosion-resistant high-strength manhole cover resin for the gas station at least comprises the following raw materials in percentage by mass: 40-50% of short-chain alcohol mixture and 30-40% of unsaturated acid or anhydride mixture; the acid value of the corrosion-resistant high-strength gas station well lid resin is 10-15 mgKOH/g. The well lid resin of this application preparation has good mechanical properties, heat distortion temperature to effectively strengthened the resin and in the hydrolysis resistance of outdoor environment well lid application process, acid and alkali corrosion resistance and resistant static, suitable popularization in well lid resin field has wide development prospect.
Description
Technical Field
The invention relates to the field of IPC classified C08G, in particular to corrosion-resistant high-strength filling station well lid resin and a preparation method thereof.
Background
With the development of economy and the improvement of the living standard of people, more and more families begin to select family cars for life and travel, so that gas stations such as bamboo shoots in spring after rain among cities are generally established. With increasing awareness of the protection against accidents, facilities near gasoline stations also tend to be more and more secured.
In recent years, the state carries out upgrading and reconstruction on gas stations of some nationally owned enterprises and civil enterprises, and the composite inspection well cover is widely popularized in the process, so that oil gas can be effectively prevented from leaking due to good performances, the accident rate is reduced, and particularly, the composite inspection well cover is most common in polyester resin composite materials.
The prior art (CN 201010193382.6) provides a high-strength polyester composite well lid, the composite material mainly comprises unsaturated polyester resin, heavy calcium carbonate, glass fiber, a low-shrinkage additive and the like, the patent states that the well lid provided by the high-strength polyester composite well lid has good bearing capacity, impact resistance and wear resistance, but the added filler component is easy to form micro cracks and pores in a resin composite system to help the penetration of corrosive liquid, and the added calcium carbonate and other components have poor acid-base corrosion resistance effects.
Therefore, there is a need for a polyester resin that has excellent mechanical properties, corrosion resistance, and fast curing effect.
Disclosure of Invention
In order to solve the problems, the invention provides a corrosion-resistant high-strength manhole cover resin for a gas station, which comprises the following raw materials in percentage by mass: 40-50% of short-chain alcohol mixture and 30-40% of unsaturated acid or anhydride mixture; the acid value of the corrosion-resistant high-strength gas station well lid resin is 10-15 mgKOH/g.
In a more preferable mode, the acid value of the corrosion-resistant high-strength manhole cover resin is 13 to 14mgKOH/g.
Preferably, the corrosion-resistant high-strength manhole cover resin for gas stations further comprises, by mass, 0.001 to 0.1% of an auxiliary agent and a crosslinking agent for supplementing the balance.
As a preferred embodiment, the crosslinking agent is styrene.
In a preferred embodiment, the short-chain alcohol is at least two of propylene glycol, ethylene glycol, pentanediol, butanediol, propanol, methanol, dipropylene glycol, isopropanol, and neopentyl glycol.
As a preferred embodiment, the short-chain alcohol is propylene glycol, dipropylene glycol and isopropyl alcohol.
As a preferable scheme, the mass ratio of the propylene glycol, the dipropylene glycol and the isopropanol is 20-25: 10-15: 10.
as a more preferable scheme, the mass ratio of the propylene glycol, the dipropylene glycol and the isopropanol is 23:12:10.
in a preferred embodiment, the unsaturated acid or anhydride is any two of isophthalic acid, acrylic anhydride, and maleic anhydride.
As a preferred embodiment, the unsaturated acid or anhydride is isophthalic acid and maleic anhydride.
In a preferred embodiment, the mass ratio of the isophthalic acid to the maleic anhydride is 7 to 7.5:28 to 30.
As a more preferable mode, the mass ratio of isophthalic acid to maleic anhydride is 7.5:27.5.
as a more preferable scheme, the mass ratio of the short-chain alcohol mixture to the unsaturated acid or anhydride mixture is 42-48: 33 to 37.
As a more preferable scheme, the mass ratio of the short-chain alcohol mixture to the unsaturated acid or acid anhydride mixture is 45:35.
in the application, the hydrolysis resistance and the corrosion resistance of the resin material can be effectively improved by selecting the specific short-chain alcohol mixture, the unsaturated acid or anhydride mixture and compounding the two under the specific compounding proportion. The applicant believes that: the specific and specific compounding proportion of propylene glycol, dipropylene glycol and isopropanol, as well as isophthalic acid and maleic anhydride selected in the application are matched with styrene, and the mass ratio of the two systems is 45:35, uniform resin long chains can be formed in the synthetic process of the resin, the phenomenon of active group aggregation and concentration caused by the difference of reactivity ratios of monomers used in a compounding manner in the synthetic process can be effectively reduced, effective active group chains are uniformly dispersed, chain segments of double bond structures at two ends of the chain chains are effectively formed, the overall content of secondary hydroxyl is increased, the number of ester bonds in unit content is greatly reduced, the wettability and the cohesiveness of the resin to materials such as glass fibers are improved, and the alkali resistance effect is better.
As a preferable scheme, the auxiliary agent is at least one of a filler, a catalyst, an antioxidant, a flame retardant, an ultraviolet-resistant absorbent and a flame retardant.
In a preferred embodiment, the filler is at least one of a metal oxide, a carbon material, and a fiber material.
Preferably, the flame retardant is at least one of a phosphorus flame retardant and a metal oxide flame retardant.
In a preferred embodiment, the ultraviolet absorber is at least one of salicylic acids, benzophenones and benzotriazoles.
In a preferred embodiment, the antioxidant is at least one of a phenolic antioxidant and a hindered amine antioxidant.
As a preferred scheme, the antioxidant is 2, 6-di-tert-butyl-p-cresol and hydroquinone; the mass ratio of the 2, 6-di-tert-butyl-p-cresol to the hydroquinone is 1-3: 4 to 5.
As a more preferable scheme, the mass ratio of the 2, 6-di-tert-butyl-p-cresol to the hydroquinone is 3:4.
in this application, when the mass ratio of 2, 6-di-tert-butyl-p-cresol and hydroquinone added in this application is 3. The applicant speculates that: at the moment, the synergistic action of the 2, 6-di-tert-butyl-p-cresol and the hydroquinone can simultaneously capture active free electrons in the resin and change the active free electrons into inactive electrons, so that continuous electron losing reaction is inhibited, and the number of free electrons in the whole resin system is reduced; meanwhile, the addition of the two can generate a synergistic crosslinking effect with styrene and polyester resin added in the matrix resin, so that a phenol chain segment is introduced into a resin system, the crosslinking density is enhanced, and the number of movable groups in the resin system is reduced.
As a preferable mode, the catalyst is at least one of metal naphthenates.
In a preferred embodiment, the catalyst is copper naphthenate.
Preferably, the viscosity of the corrosion-resistant high-strength manhole cover resin is 1200 to 1400 mPas, 23 ℃.
As a preferred embodiment, the corrosion-resistant high-strength manhole cover resin has a viscosity of 1300mPa · s,23 ℃.
The prepared filling station well lid resin forms a stable molecular long chain with double-end double bonds through the selected specific alcohol, anhydride and styrene raw materials and the mutual synergistic effect of the raw materials and specific auxiliaries, so that the resin has excellent curing activity, the proportion is regulated and controlled in a micro manner, the ester bond quantity, the methyl quantity beside the ester bond and the secondary hydroxyl quantity in a resin system are controlled, and a resin material with an obvious acid and alkali resistant effect, good mechanical strength and good hydrolysis resistance is formed in a synergistic manner.
The second aspect of the invention provides a preparation method of the corrosion-resistant high-strength gas station well lid resin, which comprises the following steps: (1) Adding a short-chain alcohol mixture and an unsaturated acid or anhydride mixture raw material into a reaction container, heating up under the protection of nitrogen for reflux reaction, heating up to 140-160 ℃, and carrying out reflux reaction until the acid value is less than 50mgKOH/g; (2) Gradually heating to 210-230 ℃, carrying out polycondensation reaction for 3-4 hours, and obtaining an intermediate product after the reaction is finished; (3) And adding a cross-linking agent, an auxiliary agent and the cross-linking agent into the intermediate product, and cooling until the viscosity of the product reaches a specified acid value to obtain the product.
In a preferred embodiment, the viscosity of the intermediate product is 1000 to 1150 mPas, 150 ℃.
In a preferred embodiment, the acid value of the intermediate product is 25 to 30mgKOH/g.
Has the advantages that:
1. the well lid resin of filling station that prepares in this application, it is through selecting for use specific short chain alcohol mixture, unsaturated acid or acid anhydride mixture and use both complex under the specific complex proportion, can effectively improve the hydrolysis resistance and the corrosion resisting property of resin material, by a wide margin promoted the environment suitability and the performance of filling station well lid, reduce the potential safety hazard.
2. The filling station well lid resin prepared in the application has good oxidation resistance and can effectively improve the corrosion resistance and the antistatic property of the resin when the mass ratio of 2, 6-di-tert-butyl-p-cresol to hydroquinone added in the application is 3. The resin material has long service life, excellent stability in a long-term use process, reduced damage phenomenon and good practicability and economy.
3. The filling station well lid resin of preparing in this application is different from present resin for the well lid, because the excellent acid and alkali resistance effect that itself embodies, mechanical strength and hydrolysis resistance can lie in to form effectual guard action in raw materials such as filler mixed use to reduce the holistic damage phenomenon of combined material.
Detailed Description
Example 1
Embodiment 1 in a first aspect, there is provided a corrosion-resistant high-strength manhole cover resin for a gas station, which comprises the following components in percentage by mass: 45% of short-chain alcohol mixture, 35% of unsaturated acid or anhydride mixture, 0.1% of auxiliary agent and the balance of crosslinking agent.
Wherein the acid value of the corrosion-resistant high-strength gas station well lid resin is 14mgKOH/g; the viscosity was 1300 mPas, 23 ℃.
The short-chain alcohol mixture is a mixture of propylene glycol, dipropylene glycol and isopropanol, and the mass ratio is 23:12:10.
the unsaturated acid or anhydride is isophthalic acid and maleic anhydride, and the mass ratio is 7.5:27.5.
the auxiliary agent is 0.09 percent of antioxidant and 0.01 percent of catalyst; the antioxidant is 2, 6-di-tert-butyl-p-cresol and hydroquinone, and the mass ratio is 3:4; the catalyst is copper naphthenate.
The cross-linking agent is styrene.
The second aspect further provides a preparation method of the corrosion-resistant high-strength gas station well lid resin, which comprises the following steps: (1) Adding a short-chain alcohol mixture and an unsaturated acid or anhydride mixture raw material into a reaction container, heating up under the protection of nitrogen for reflux reaction, heating up to 150 ℃, and carrying out reflux reaction until the acid value is less than 50mgKOH/g; (2) Gradually heating to 220 ℃, carrying out polycondensation reaction for 3 hours, and obtaining an intermediate product after the reaction is finished; (3) And adding the auxiliary agent and the cross-linking agent into the intermediate product, and cooling until the viscosity of the product reaches a specified acid value to obtain the product.
Wherein the viscosity of the intermediate product is 1100 mPas, 150 ℃; the acid value was 28mgKOH/g.
Example 2
The embodiment of the present invention is different from embodiment 1 in that: the short-chain alcohol mixture is 42 percent, and the unsaturated acid or anhydride mixture is 37 percent.
Example 3
The embodiment of this embodiment is the same as embodiment 1, except that: the mass ratio of the propylene glycol, the dipropylene glycol and the isopropanol is 20:15:10.
comparative example 1
The embodiment of this comparative example is the same as example 1 except that: the short chain alcohol mixture is 20% and the unsaturated acid or anhydride mixture is 40%.
Comparative example 2
The embodiment of this comparative example is the same as example 1 except that: the mass ratio of the propylene glycol, the dipropylene glycol and the isopropanol is 1:1:1.
evaluation of Performance
1. Mechanical properties: the tensile properties and flexural properties of the resin castings were tested with reference to the GB/T2567 standard, 5 specimens were tested for each example comparative example, and the average of the values obtained is shown in Table 1.
2. Heat distortion temperature: the heat distortion temperature of the resin cast body was measured in accordance with the standard GB/T1634.1, 5 specimens were tested for each example comparative example, and the average value of the measured values is shown in Table 2.
3. Corrosion resistance: soaking the samples in a.10 percent sodium hydroxide solution at the temperature of 95 ℃ for 50 hours respectively; b, soaking in 50% sulfuric acid solution at 80 ℃ for 28d, and performing flexural strength retention test according to the GB/T2567 standard, 5 samples are tested in each example comparative example, and the average value of the measured values is shown in Table 2.
TABLE 1
| Examples | Tensile strength MPa | Elongation at break% | Flexural strength MPa |
| Example 1 | 99.8 | 10.4 | 184.3 |
| Example 2 | 94.6 | 9.4 | 183.9 |
| Example 3 | 95.7 | 9.6 | 179.4 |
| Comparative example 1 | 78.6 | 6.5 | 141.5 |
| Comparative example 2 | 80.1 | 6.2 | 139.3 |
TABLE 1
The embodiment 1-3, the comparative example 1-2, and the table 1 and the table 2 show that the corrosion-resistant high-strength filling station well lid resin and the preparation process thereof provided by the invention have good mechanical properties and thermal deformation temperatures, effectively enhance hydrolysis resistance, acid-base corrosion resistance and static resistance of the resin in the application process of the well lid in the outdoor environment, are suitable for popularization in the field of well lid resins, and have wide development prospects. Wherein, the example 1 obtains the best performance index under the factors of the best preparation raw material proportion, the best preparation process and the like.
Claims (10)
1. The utility model provides a corrosion-resistant high strength filling station well lid resin which characterized in that: the raw materials at least comprise the following components in percentage by mass: 40-50% of short-chain alcohol mixture and 30-40% of unsaturated acid or anhydride mixture; the acid value of the corrosion-resistant high-strength gas station well lid resin is 10-15 mgKOH/g.
2. The corrosion-resistant high-strength manhole cover resin for gas stations of claim 1, wherein: the corrosion-resistant high-strength filling station well lid resin further comprises 0.001-0.1% of an auxiliary agent and a crosslinking agent for supplementing the balance in percentage by mass.
3. The corrosion-resistant high-strength manhole cover resin for gas stations according to any one of claims 1 to 2, wherein: the short-chain alcohol is at least two of propylene glycol, ethylene glycol, pentanediol, butanediol, propanol, methanol, dipropylene glycol, isopropanol and neopentyl glycol.
4. The corrosion-resistant high-strength manhole cover resin for gas stations as claimed in any one of claims 2 to 3, wherein: the unsaturated acid or anhydride is any two of isophthalic acid, acrylic anhydride and maleic anhydride.
5. The corrosion-resistant high-strength manhole cover resin for gas stations of claims 2 to 4, wherein: the auxiliary agent is at least one of filler, catalyst, antioxidant, flame retardant, ultraviolet-resistant absorbent and flame retardant.
6. The corrosion-resistant high-strength manhole cover resin for gas stations of claim 5, wherein: the antioxidant is at least one of phenols and hindered amine antioxidants.
7. The corrosion-resistant high-strength manhole cover resin for gas stations of claim 6, wherein: the antioxidant is 2, 6-di-tert-butyl-p-cresol and hydroquinone; the mass ratio of the 2, 6-di-tert-butyl-p-cresol to the hydroquinone is 1-3: 4 to 5.
8. The corrosion-resistant high-strength manhole cover resin for gas stations of claims 5 to 7, wherein: the catalyst is at least one of metal naphthenates.
9. The corrosion-resistant high-strength manhole cover resin for gas stations of any one of claims 1 to 8, wherein: the viscosity of the corrosion-resistant high-strength filling station well lid resin is 1200-1400 mPa & s,23 ℃.
10. A method for preparing the corrosion-resistant high-strength manhole cover resin for gas stations according to any one of claims 2 to 9, wherein the method comprises the following steps: the method comprises the following steps: (1) Adding a short-chain alcohol mixture and an unsaturated acid or anhydride mixture raw material into a reaction container, heating up under the protection of nitrogen for reflux reaction, heating up to 140-160 ℃, and carrying out reflux reaction until the acid value is less than 50mgKOH/g; (2) Gradually heating to 210-230 ℃, carrying out polycondensation reaction for 3-4 hours, and obtaining an intermediate product after the reaction is finished; (3) And adding an auxiliary agent and a cross-linking agent into the intermediate product, and cooling until the viscosity of the product reaches a specified acid value to obtain the product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111622596.5A CN115819741B (en) | 2021-12-28 | 2021-12-28 | Corrosion-resistant high-strength well lid resin for gas station and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111622596.5A CN115819741B (en) | 2021-12-28 | 2021-12-28 | Corrosion-resistant high-strength well lid resin for gas station and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115819741A true CN115819741A (en) | 2023-03-21 |
| CN115819741B CN115819741B (en) | 2023-12-19 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1419973A (en) * | 1971-12-10 | 1975-12-31 | Koppers Co Inc | Chemically resistand polyesters |
| CN103626931A (en) * | 2013-11-29 | 2014-03-12 | 浙江天和树脂有限公司 | Low-cost corrosion-resistant unsaturated polyester resin, and preparation method and use thereof |
| CN112851875A (en) * | 2021-03-05 | 2021-05-28 | 镇江利德尔复合材料有限公司 | Low-smoke low-toxicity halogen-free flame-retardant resin and preparation method and application thereof |
-
2021
- 2021-12-28 CN CN202111622596.5A patent/CN115819741B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1419973A (en) * | 1971-12-10 | 1975-12-31 | Koppers Co Inc | Chemically resistand polyesters |
| CN103626931A (en) * | 2013-11-29 | 2014-03-12 | 浙江天和树脂有限公司 | Low-cost corrosion-resistant unsaturated polyester resin, and preparation method and use thereof |
| CN112851875A (en) * | 2021-03-05 | 2021-05-28 | 镇江利德尔复合材料有限公司 | Low-smoke low-toxicity halogen-free flame-retardant resin and preparation method and application thereof |
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| CN115819741B (en) | 2023-12-19 |
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Effective date of registration: 20240328 Address after: No. 18 Chuyan Road, Huai'an Industrial Park, Huai'an City, Jiangsu Province, 223001 Patentee after: Huai'an Licheng New Material Co.,Ltd. Country or region after: China Address before: 212114 2 fine chemicals Park, Gao Zi Town, Dantu District, Zhenjiang, Jiangsu Province Patentee before: ZHENJIANG LEADER COMPOSITE CO.,LTD. Country or region before: China |