Efficient ultraviolet curing pipeline repairing material and preparation method thereof
By using stearic acid amide, dimethyl phthalate, isooctanol polyoxyethylene ether compound additives and photoinitiators of 2-isopropylthioanthone and 3-methylphenylethanol in pipeline repair materials, the problem of insufficient wear resistance of existing pipeline repair materials is solved, and higher wear resistance and economic value are achieved.
Patent Information
- Application Number
- CN202411888911.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-03-14
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing photocuring pipeline repair materials have poor wear resistance during the fluid erosion process and are prone to break again, resulting in high repair frequency.
The additives made of stearic acid amide, dimethyl phthalate, and isoctanol polyoxyethylene ether are used to combine with photoinitiators of 2-isopropylthioanthone and 3-methylphenylethanol to improve the wear resistance of the repair material after curing.
It significantly improves the wear resistance of the repair material, allowing it to resist fluid erosion for a long time, reduces the frequency of pipeline repair, and has higher economic value.
Smart Images
Figure BDA0005200099690000061 
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Abstract
Description
Technical Field
[0001] The invention relates to the field of pipeline repair, and in particular to a high-efficiency ultraviolet light-cured pipeline repair material and a preparation method thereof. Background Art
[0002] Underground pipelines are pipes laid underground for the transportation of liquids, gases or loose solids. During long-term use, underground pipelines may rupture due to various reasons. If the entire pipeline needs to be replaced, the workload is huge, resulting in high maintenance costs. Therefore, for pipelines that are not seriously damaged, pipeline repair materials are usually used to repair the ruptures to restore the function of the pipeline.
[0003] Light-curing pipeline repair materials are currently the mainstream pipeline repair materials because of their fast curing speed and less impact on the overall transportation of the pipeline during interception and repair. However, since the fluid in the pipeline continuously flushes the inner wall of the pipeline, and the wear resistance of existing light-curing materials is relatively general, they are easily damaged again during the fluid flushing process. Therefore, there is still room for improvement. Summary of the invention
[0004] In order to improve the wear resistance of pipeline repair materials, the present application provides a high-efficiency UV-curable pipeline repair material and a preparation method thereof.
[0005] In the first aspect, the present application provides a highly efficient UV-curable pipeline repair material, which adopts the following technical solution: A high-efficiency ultraviolet light-curing pipeline repair material comprises the following components in parts by weight: 30-40 parts of prepolymer; 30-40 parts of monomer; 3-4 parts of photoinitiator; 5-8 parts of additives.
[0006] The auxiliary agent is a compound of stearic acid amide, dimethyl phthalate and isooctyl alcohol polyoxyethylene ether.
[0007] By adopting the above technical scheme, by adding an auxiliary agent composed of stearic acid amide, dimethyl phthalate and isooctyl alcohol polyoxyethylene ether, under the mutual cooperation of stearic acid amide, dimethyl phthalate and isooctyl alcohol polyoxyethylene ether, the repair material can be well modified, and the wear resistance of the repair material after curing can be significantly increased, so that the repair material can resist fluid erosion for a long time, and the pipeline is not easy to be damaged again after repair, which effectively reduces the frequency of repair and has higher economic value.
[0008] Preferably, the mass ratio of stearic acid amide, dimethyl phthalate and polyoxyethylene isooctyl alcohol ether is 1-2:2-3:2-3.
[0009] By adopting the above technical scheme and specifically selecting the mass ratio of stearic acid amide, dimethyl phthalate and polyoxyethylene isooctanol ether, the coordination effect of stearic acid amide, dimethyl phthalate and polyoxyethylene isooctanol ether is better, which can more significantly improve the wear resistance of the repair material after curing.
[0010] Preferably, the prepolymer is epoxy acrylate.
[0011] By adopting the above technical solution and specifically selecting epoxy acrylate, the physical properties of the repair material can be better improved, making the repair material less prone to wear after curing.
[0012] Preferably, the monomer is a compound of ethylene glycol dimethacrylate and neopentyl glycol diacrylate.
[0013] By adopting the above technical solution, by specifically selecting ethylene glycol dimethacrylate and neopentyl glycol diacrylate, the effect of combining with epoxy acrylate is better. Preferably, the mass ratio of ethylene glycol dimethacrylate to neopentyl glycol diacrylate is 15-20:15-20.
[0014] By adopting the above technical solution and specifically selecting the mass ratio of ethylene glycol dimethacrylate and neopentyl glycol diacrylate, the coordination effect of ethylene glycol dimethacrylate, neopentyl glycol diacrylate and epoxy acrylate is better, and the physical properties of the repair material after curing are better.
[0015] Preferably, the photoinitiator is a mixture of 2-isopropylthioxanthone and 3-methylphenethyl alcohol.
[0016] By adopting the above technical scheme, by specifically selecting the photoinitiator as a combination of 2-isopropylthioxanthone and 3-methylphenylethanol, the light curing speed is faster, which can well achieve the effect of rapid pipeline repair, and can make the cross-linking density higher, which can better improve the physical properties of the repair material after curing.
[0017] Preferably, the mass ratio of the 2-isopropylthioxanthone to 3-methylphenethyl alcohol is 1.5-2:1.5-2.
[0018] By adopting the above technical solution and specifically selecting the mass ratio of 2-isopropylthioxanthone and 3-methylphenylethanol, the effect of increasing the light curing speed is better, and the removal performance of the repair material after curing is better.
[0019] In a second aspect, the present application provides a method for preparing a highly efficient UV-curable pipeline repair material, using the following technical solution: A method for preparing the above-mentioned high-efficiency UV-curable pipeline repair material comprises the following steps: Step 1), mixing the prepolymer, monomer and additive uniformly to obtain a premix; Step 2), adding a photoinitiator to the premix and mixing evenly to obtain a high-efficiency UV-curable pipeline repair material.
[0020] By adopting the above technical solution, the high-efficiency UV light-curing pipeline repair material can be quickly photocured, and the efficiency of repairing pipelines is relatively high. In addition, the cured repair material has good wear resistance and is not easily damaged under fluid erosion, thereby reducing the frequency of pipeline repairs and having a relatively high economic value.
[0021] In summary, this application has the following beneficial effects: 1. Since the present application adds an auxiliary agent compounded by stearic acid amide, dimethyl phthalate and isooctyl alcohol polyoxyethylene ether, under the cooperation of stearic acid amide, dimethyl phthalate and isooctyl alcohol polyoxyethylene ether, the repair material can be well modified, and the wear resistance of the repair material after curing can be significantly increased, so that the repair material can resist fluid erosion for a long time, and the pipeline is not easy to be damaged again after repair, which effectively reduces the frequency of repair and has higher economic value.
[0022] 2. In the present application, it is preferred to specifically select the mass ratio of stearic acid amide, dimethyl phthalate and polyoxyethylene isooctanol ether so that the coordination effect of stearic acid amide, dimethyl phthalate and polyoxyethylene isooctanol ether is better, which can more significantly improve the wear resistance of the repair material after curing.
[0023] 3. In the present application, the photoinitiator is preferably selected as a combination of 2-isopropylthioxanthone and 3-methylphenylethanol, so that the photocuring speed is faster, the effect of rapid pipeline repair can be well achieved, and the cross-linking density can be higher, which can better improve the physical properties of the repair material after curing. DETAILED DESCRIPTION
[0024] The present application is further described in detail below in conjunction with embodiments.
[0025] Example 1 A highly efficient ultraviolet light curing pipeline repair material, comprising the following components: Prepolymer, monomer, photoinitiator, additive.
[0026] The prepolymer is epoxy acrylate.
[0027] The monomer is a compound of ethylene glycol dimethacrylate and neopentyl glycol diacrylate.
[0028] The photoinitiator is a compound of 2-isopropylthioxanthone and 3-methylphenylethanol.
[0029] The auxiliary agent is a compound of stearic acid amide, dimethyl phthalate and isooctyl alcohol polyoxyethylene ether.
[0030] Epoxy acrylate was purchased from Jining Fangyu Chemical Co., Ltd. with the brand name RJ351.
[0031] Ethylene glycol dimethacrylate was purchased from Jining Fangyu Chemical Co., Ltd. with the brand name EGDMA.
[0032] Neopentyl glycol diacrylate was purchased from Bashifu (Shanghai) Biopharmaceutical Technology Co., Ltd., CAS No.: 2223-82-7.
[0033] 2-Isopropylthioxanthone was purchased from Jiangsu Pulex Biotechnology Co., Ltd., CAS No.: 5495-84-1.
[0034] 3-Methylphenylethanol was purchased from Jiangsu Runfeng Synthetic Technology Co., Ltd., CAS No.: 1875-89-4.
[0035] Stearic acid amide was purchased from Jinan Junteng Chemical Co., Ltd., CAS No.: 124-26-5.
[0036] Dimethyl phthalate was purchased from Jinan Xinling Chemical Technology Co., Ltd., CAS No.: 131-11-3.
[0037] Isooctanol polyoxyethylene ether was purchased from Taizhou Jiayin Chemical Co., Ltd., CAS No.: 26468-86-0.
[0038] The preparation method of the high-efficiency UV-curable pipeline repair material comprises the following steps: Step 1), 30kg epoxy acrylate, 15kg ethylene glycol dimethacrylate, 15kg neopentyl glycol diacrylate, 1kg stearic acid amide, 2kg dimethyl phthalate, 2kg isooctyl alcohol polyoxyethylene ether are put into a stirring tank, the speed is 120r / min, stirring for 10min, mixing evenly, to obtain a premix.
[0039] Step 2), add 1.5kg 2-isopropylthioxanthone and 1.5kg 3-methylphenylethanol to the premix, rotate at 120r / min, stir for 10min, mix evenly, and obtain a high-efficiency UV-curable pipeline repair material.
[0040] Example 2 A highly efficient ultraviolet light curing pipeline repair material, comprising the following components: Prepolymer, monomer, photoinitiator, additive.
[0041] The prepolymer is epoxy acrylate.
[0042] The monomer is a compound of ethylene glycol dimethacrylate and neopentyl glycol diacrylate.
[0043] The photoinitiator is a compound of 2-isopropylthioxanthone and 3-methylphenylethanol.
[0044] The auxiliary agent is a compound of stearic acid amide, dimethyl phthalate and isooctyl alcohol polyoxyethylene ether.
[0045] Epoxy acrylate was purchased from Jining Fangyu Chemical Co., Ltd. with the brand name RJ351.
[0046] Ethylene glycol dimethacrylate was purchased from Jining Fangyu Chemical Co., Ltd. with the brand name EGDMA.
[0047] Neopentyl glycol diacrylate was purchased from Bashifu (Shanghai) Biopharmaceutical Technology Co., Ltd., CAS No.: 2223-82-7.
[0048] 2-Isopropylthioxanthone was purchased from Jiangsu Pulex Biotechnology Co., Ltd., CAS No.: 5495-84-1.
[0049] 3-Methylphenylethanol was purchased from Jiangsu Runfeng Synthetic Technology Co., Ltd., CAS No.: 1875-89-4.
[0050] Stearic acid amide was purchased from Jinan Junteng Chemical Co., Ltd., CAS No.: 124-26-5.
[0051] Dimethyl phthalate was purchased from Jinan Xinling Chemical Technology Co., Ltd., CAS No.: 131-11-3.
[0052] Isooctanol polyoxyethylene ether was purchased from Taizhou Jiayin Chemical Co., Ltd., CAS No.: 26468-86-0.
[0053] The preparation method of the high-efficiency UV-curable pipeline repair material comprises the following steps: Step 1), 35kg epoxy acrylate, 18kg ethylene glycol dimethacrylate, 18kg neopentyl glycol diacrylate, 1.5kg stearic acid amide, 2.5kg dimethyl phthalate, 2.5kg isooctyl alcohol polyoxyethylene ether are put into a stirring tank, the speed is 120r / min, stirring for 10min, mixing evenly, to obtain a premix.
[0054] Step 2), add 1.8 kg 2-isopropylthioxanthone and 1.8 kg 3-methylphenylethanol to the premix, rotate at 120 r / min, stir for 10 min, mix evenly, and obtain a high-efficiency UV-curable pipeline repair material.
[0055] Example 3 A highly efficient ultraviolet light curing pipeline repair material, comprising the following components: Prepolymer, monomer, photoinitiator, additive.
[0056] The prepolymer is epoxy acrylate.
[0057] The monomer is a compound of ethylene glycol dimethacrylate and neopentyl glycol diacrylate.
[0058] The photoinitiator is a compound of 2-isopropylthioxanthone and 3-methylphenylethanol.
[0059] The auxiliary agent is a compound of stearic acid amide, dimethyl phthalate and isooctyl alcohol polyoxyethylene ether.
[0060] Epoxy acrylate was purchased from Jining Fangyu Chemical Co., Ltd. with the brand name RJ351.
[0061] Ethylene glycol dimethacrylate was purchased from Jining Fangyu Chemical Co., Ltd. with the brand name EGDMA.
[0062] Neopentyl glycol diacrylate was purchased from Bashifu (Shanghai) Biopharmaceutical Technology Co., Ltd., CAS No.: 2223-82-7.
[0063] 2-Isopropylthioxanthone was purchased from Jiangsu Pulex Biotechnology Co., Ltd., CAS No.: 5495-84-1.
[0064] 3-Methylphenylethanol was purchased from Jiangsu Runfeng Synthetic Technology Co., Ltd., CAS No.: 1875-89-4.
[0065] Stearic acid amide was purchased from Jinan Junteng Chemical Co., Ltd., CAS No.: 124-26-5.
[0066] Dimethyl phthalate was purchased from Jinan Xinling Chemical Technology Co., Ltd., CAS No.: 131-11-3.
[0067] Isooctanol polyoxyethylene ether was purchased from Taizhou Jiayin Chemical Co., Ltd., CAS No.: 26468-86-0.
[0068] The preparation method of the high-efficiency UV-curable pipeline repair material comprises the following steps: Step 1), 40kg epoxy acrylate, 20kg ethylene glycol dimethacrylate, 20kg neopentyl glycol diacrylate, 2kg stearic acid amide, 3kg dimethyl phthalate, 3kg isooctyl alcohol polyoxyethylene ether are put into a stirring tank, the speed is 120r / min, stirring for 10min, mixing evenly, to obtain a premix.
[0069] Step 2), add 2kg 2-isopropylthioxanthone and 2kg 3-methylphenylethanol to the premix, rotate at 120 r / min, stir for 10 min, mix evenly, and obtain a high-efficiency UV-curable pipeline repair material.
[0070] Comparative Example 1 A highly efficient UV-curable pipeline repair material, compared with Example 2, differs only in that: Among the auxiliary agents, diethylhexyl maleate is used to replace stearic acid amide in equal amounts.
[0071] Di(2-ethylhexyl) maleate was purchased from Anhui Banghao Chemical Co., Ltd., CAS No.: 142-16-5.
[0072] Comparative Example 2 A highly efficient UV-curable pipeline repair material, compared with Example 2, differs only in that: Among the additives, propylene glycol diacetate was used to replace dimethyl phthalate in an equal amount.
[0073] Propylene glycol diacetate was purchased from Shandong Jinyufeng New Materials Co., Ltd., CAS No.: 623-84-7.
[0074] Comparative Example 3 A highly efficient UV-curable pipeline repair material, compared with Example 2, differs only in that: Among the auxiliary agents, an equal amount of dodecyl alcohol ester is used to replace isooctyl alcohol polyoxyethylene ether.
[0075] Dodecanol ester was purchased from Jining Tangyi Chemical Co., Ltd., CAS No.: 25265-77-4.
[0076] Comparative Example 4 A highly efficient UV-curable pipeline repair material, compared with Example 2, differs only in that: Among the auxiliary agents, diisooctyl maleate is used to replace stearic acid amide in an equal amount, propylene glycol diacetate is used to replace dimethyl phthalate in an equal amount, and dodecyl alcohol ester is used to replace isooctyl alcohol polyoxyethylene ether in an equal amount.
[0077] Di(2-ethylhexyl) maleate was purchased from Anhui Banghao Chemical Co., Ltd., CAS No.: 142-16-5.
[0078] Propylene glycol diacetate was purchased from Shandong Jinyufeng New Materials Co., Ltd., CAS No.: 623-84-7.
[0079] Dodecanol ester was purchased from Jining Tangyi Chemical Co., Ltd., CAS No.: 25265-77-4.
[0080] Comparative Example 5 A highly efficient UV-curable pipeline repair material, compared with Example 2, differs only in that: In the photoinitiator, benzophenone was used to replace 2-isopropylthioxanthone in an equal amount.
[0081] Benzophenone was purchased from Binzhou Shuangfeng Chemical Co., Ltd., CAS No.: 119-61-9.
[0082] Comparative Example 6 A highly efficient UV-curable pipeline repair material, compared with Example 2, differs only in that: In the photoinitiator, dimethylaminoethyl benzoate was used to replace 3-methylphenethanol in an equal amount.
[0083] Dimethylaminoethyl benzoate was purchased from Wuhan Jixinyibang Biotechnology Co., Ltd., CAS number: 2208-05-1.
[0084] Comparative Example 7 A highly efficient UV-curable pipeline repair material, compared with Example 2, differs only in that: In the photoinitiator, benzophenone was used to replace 2-isopropylthioxanthone in an equal amount, and dimethylaminoethyl benzoate was used to replace 3-methylphenethanol in an equal amount.
[0085] Benzophenone was purchased from Binzhou Shuangfeng Chemical Co., Ltd., CAS No.: 119-61-9.
[0086] Dimethylaminoethyl benzoate was purchased from Wuhan Jixinyibang Biotechnology Co., Ltd., CAS number: 2208-05-1.
[0087] Experiment 1 According to GB / T1689-2014 "Determination of Wear Resistance of Vulcanized Rubber" (using Akron Abrasion Tester), the wear index (%) of the samples prepared from the high-efficiency UV-curing pipeline repair materials of each embodiment and comparative example was tested. The standard rubber formula uses S 1 .
[0088] Preparation of test samples: Inject high-efficiency UV-curing pipeline repair material into the mold, 365nm UV lamp, light power 100mW / cm 2 , irradiate for 3 minutes, demould, and obtain the sample to be tested.
[0089] The specific test data of Experiment 1 are shown in Table 1.
[0090] Table 1 According to the data comparison of each embodiment and the comparative example in Table 1, the wear index of each embodiment is significantly higher than that of each comparative example. It can be seen that the wear resistance of each embodiment is significantly better than that of each comparative example, which proves that the additives compounded with stearic acid amide, dimethyl phthalate and isooctyl alcohol polyoxyethylene ether added in each embodiment can significantly improve the wear resistance of the repair material, and when the photoinitiator compounded with 2-isopropylthioxanthone and 3-methylphenylethanol is used, the wear resistance of the repair material can be further improved, so that the repair material has a faster light curing speed and better durability. After the pipeline is repaired, it is not easy to be damaged again, the repair frequency is reduced, and it has a higher economic value.
[0091] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.
Claims
1. A highly efficient UV-curable pipeline repair material, characterized by: The composition includes the following components in parts by weight: 30-40 parts of prepolymer; 30-40 parts of monomer; 3-4 parts of photoinitiator; 5-8 parts of additives.
2. The auxiliary agent is a compound of stearic acid amide, dimethyl phthalate and polyoxyethylene isooctyl alcohol ether.
3. The high-efficiency UV-curable pipeline repair material according to claim 1, characterized in that: The mass ratio of stearic acid amide, dimethyl phthalate and isooctyl alcohol polyoxyethylene ether is 1-2:2-3:2-3.
4. The high-efficiency UV-curable pipeline repair material according to claim 1, characterized in that: The prepolymer is epoxy acrylate.
5. The high-efficiency UV-curable pipeline repair material according to claim 1, characterized in that: The monomer is a compound of ethylene glycol dimethacrylate and neopentyl glycol diacrylate.
6. The high-efficiency UV-curable pipeline repair material according to claim 4, characterized in that: The mass ratio of the ethylene glycol dimethacrylate to the neopentyl glycol diacrylate is 15-20:15-20.
7. The high-efficiency UV-curable pipeline repair material according to claim 1, characterized in that: The photoinitiator is a compound of 2-isopropylthioxanthone and 3-methylphenylethanol.
8. The high-efficiency UV-curable pipeline repair material according to claim 6, characterized in that: The mass ratio of the 2-isopropylthioxanthone to 3-methylphenylethanol is 1.5-2:1.5-2.
9. A method for preparing a high-efficiency UV-curable pipeline repair material according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1), the prepolymer, monomer and additive are mixed uniformly to obtain a premix; Step 2), add a photoinitiator to the premix and mix evenly to obtain a high-efficiency UV-curable pipeline repair material.