Composition for evaluating maintenance performance of pipeline and preparation method thereof

Abstract

The invention relates to a composition for evaluating the maintenance performance of a pipeline, and the composition for evaluating the maintenance performance of the pipeline comprises the following components: grease, modified metal oxide, dirt particles, an organic nutrient source, fibers, an additive and water, wherein the modified metal oxide is obtained by blending an intermediate product obtained after hydroxylated metal oxide is grafted with carboxymethyl cellulose with Arabic gum. The carboxymethyl cellulose is introduced into the modified metal oxide, so that the compatibility with other components is enhanced, and the Arabic gum is also introduced, so that the compatibility between the modified metal oxide and other components is further enhanced under the action of hydrogen bonds and the like, and the stability of each component is enhanced. According to the method, the coexistence condition of various stains in the real environment of the household pipeline is accurately simulated, so that the evaluation result better fits the actual use effect, a reliable basis is provided for research and development and quality detection of pipeline maintenance products and product selection of consumers, and the method has a good application prospect.

Description

Technical Field

[0001] The present invention relates to the technical field of daily chemical cleaning, in particular to a composition for pipeline maintenance performance evaluation and a preparation method thereof. Background Art

[0002] In modern household life, plumbing systems are like the blood vessels of the human body, carrying out vital tasks such as water supply and drainage, and gas delivery. They are critical infrastructure that ensures the normal operation of daily life. However, with the passage of time and increased frequency of use, household plumbing faces numerous maintenance challenges. These issues not only affect the normal use of the pipes but also pose a threat to residents' quality of life and safety.

[0003] Kitchen pipes are a major reservoir for grease and food debris. During cooking, large amounts of grease flow into the pipes along with wastewater, gradually clinging to the inner walls. Statistics show that the average household generates several liters of oily kitchen wastewater daily. This grease accumulates in the pipes, along with food debris like rice grains and vegetable scraps. These common organic nutrients provide a breeding ground for bacteria and microorganisms. Over time, this not only creates unpleasant odors but also breeds pests like cockroaches, seriously impacting household hygiene. Furthermore, the accumulation of grease and food debris can reduce the inner diameter of pipes, hindering water flow and even causing blockages. Surveys show that approximately 70% of kitchen pipes experience varying degrees of blockage after one to two years of use, causing significant inconvenience to residents.

[0004] Bathroom plumbing issues are equally important. Hair is a common cause of clogged bathroom pipes, with the average household experiencing one to two hair-related blockages per month. Dirt particles like shower gel and shampoo residue and shed skin can become entangled with hair, further exacerbating the clog. Furthermore, bathrooms are humid, making metal parts prone to rust. Metal debris entering pipes not only affects drainage but can also accelerate corrosion. Once corroded and perforated, leaks can occur, wasting water resources and potentially damaging interior decor, resulting in financial losses for the household.

[0005] At present, there are many kinds of household pipe maintenance products on the market, including pipe unclogging agents, cleaners, etc. However, the quality of these products varies greatly, and consumers often lack reliable references when choosing. There are many shortcomings in the existing evaluation methods for pipe maintenance products. First, the evaluation environment is too single and cannot truly simulate the complex situations faced by household pipes during actual use. For example, the existing evaluation methods usually only consider one or several factors, and cannot comprehensively evaluate the performance of maintenance products under the combined effects of various stains such as grease, fiber, dirt, and metal debris; second, the evaluation cycle is generally long, and it usually takes weeks or even months to get results. This not only increases the cost and time cost of the evaluation, but also cannot meet the needs of rapid research and development and promotion of new pipe maintenance products; third, the uneven distribution of dirt makes the test results unreliable. Specifically, inorganic particulate dirt and organic dirt have different adhesion to the pipe. Inorganic particulate dirt (such as dust, metal oxides) are mainly attached through van der Waals forces, electrostatic effects, mechanical interlocking, etc., combined with... The adhesion of inorganic particulate matter to the pipe is relatively weak, and organic dirt (such as grease and protein) is usually attached by hydrogen bonds, hydrophobic effects, and entanglement of polymer chains with the pipe surface. The flexibility and stickiness of organic matter may make it more difficult to fall off. Therefore, inorganic particulate dirt usually has lower adhesion than organic dirt and is easier to fall off. When the distribution of inorganic particulate dirt and organic dirt in artificial dirt is uneven, the adhesion of artificial dirt to the pipe may be significantly different, resulting in non-repeatability of test results, uncertainty in the test process, or causing test results from different people and in different environments to vary greatly, ultimately leading to the inability to accurately evaluate the effectiveness of pipeline maintenance products; Fourth, some evaluation methods require the use of professional instruments and equipment for testing. For ordinary consumers and small businesses, there are problems such as high equipment cost and difficulty in operation, which limits the widespread application of evaluation methods.

[0006] Therefore, it is of great practical significance to develop a pipeline maintenance performance evaluation composition and its preparation method, as well as a corresponding evaluation method, which can truly simulate the complex environment of household pipelines, has a short evaluation cycle, uniform dirt distribution, and does not require professional instruments.

[0007] The present invention aims to solve the above-mentioned problems existing in the prior art and provide a scientific, efficient and convenient technical means for the research and development and quality inspection of household pipeline maintenance products, thereby improving the maintenance level of household pipelines and ensuring the quality of life of residents. Summary of the Invention

[0008] The present invention provides a composition for evaluating pipeline maintenance performance and a preparation method thereof. The composition for evaluating pipeline maintenance performance of the present invention comprises components such as grease, modified metal oxides, and dirt particles. It accurately simulates the coexistence of multiple stains in the real environment of household pipelines, making evaluation results more consistent with actual usage, significantly shortening the evaluation cycle, and improving the research and development efficiency of pipeline maintenance products. It also ensures uniform distribution of components, enhances the reliability of evaluation results, simplifies the evaluation process, reduces reliance on specialized instruments and equipment, and makes the evaluation method more universal and operational. This provides a reliable basis for the research and development, quality testing, and consumer product selection of pipeline maintenance products, and has promising application prospects.

[0009] The object of the present invention is to provide a composition for evaluating pipeline maintenance performance and a preparation method thereof. The composition for evaluating pipeline maintenance performance comprises the following components in mass fractions:

[0010]

[0011] The modified metal oxide is an intermediate product obtained by grafting carboxymethyl cellulose with hydroxylated metal oxide and then blending with gum arabic.

[0012] Furthermore, the mass ratio of the intermediate product to gum arabic is 1:(0.05-0.1).

[0013] Furthermore, the oil is selected from one or more of animal oil, vegetable oil and mineral oil.

[0014] In household pipes, grease wastewater generated by cooking is the main source of pipe grease. Grease will gradually adhere to the inner wall of the pipe, affecting the water flow rate and providing conditions for the growth of microorganisms. The present invention simulates this situation by rationally mixing grease components.

[0015] Furthermore, the animal oil is selected from one or more of beef tallow, mutton tallow, lard and fish oil.

[0016] Furthermore, the vegetable oil is selected from one or more of soybean oil, rapeseed oil, peanut oil, corn oil, and palm oil.

[0017] Furthermore, the mineral oil is selected from one or more of white oil, engine oil, and lubricating oil.

[0018] Furthermore, the dirt particles are selected from one or more of mud, dust, and scale.

[0019] In daily life, pipes are exposed to dirt from various sources, such as mud and sand that enter the pipes through floor drains, dust in the air that flows into the pipes with water, and scale formed by long-term deposition of water in the pipes. The present invention uses these components to simulate a real dirt environment.

[0020] Furthermore, the silt is selected from one or more of river sand, sea sand and mountain sand.

[0021] Furthermore, the dust is selected from one or more of construction dust, industrial dust, and domestic dust.

[0022] Furthermore, the dirt particles need to be screened through a 20-100 mesh sieve.

[0023] Furthermore, the organic nutrient source is selected from one or more of carbohydrates, proteins, fats, and nitrogen-containing compounds.

[0024] Organic nutrient sources are commonly found in food scraps in home kitchens and human excrement in bathrooms. They provide nutrients for microbial growth in pipes, accelerating the accumulation of dirt and odor in the pipes. The present invention uses these ingredients to simulate actual conditions.

[0025] Furthermore, the carbohydrates are selected from one or more of monosaccharides (such as glucose and fructose), disaccharides (such as sucrose and maltose), polysaccharides (such as starch and cellulose), and sugar processing by-products (such as molasses).

[0026] Furthermore, the protein is selected from one or more of animal protein (such as milk powder, egg white powder, fish meal) and plant protein (such as soybean meal, peanut cake meal).

[0027] Furthermore, the fat is selected from one or more of animal fat (such as butter, chicken fat) and vegetable oil waste (such as oil residue after oil pressing).

[0028] Furthermore, the nitrogen-containing compounds are selected from one or more of urea and amino acid substances (such as sodium glutamate).

[0029] Furthermore, the fibers are selected from one or more of natural fibers and chemical fibers.

[0030] In the home bathroom, hair and clothing fibers dropped by people during daily washing will enter the pipes with the water flow, becoming a common cause of pipe blockage. The present invention simulates such blockage by adding fibers.

[0031] Furthermore, the natural fiber is selected from one or more of hair, cotton fiber, hemp fiber, wool fiber, and silk fiber.

[0032] Furthermore, the chemical fiber is selected from one or more of polyester fiber, nylon fiber and acrylic fiber.

[0033] Furthermore, the natural fibers need to be chopped into pieces with a length of 2-3 cm.

[0034] Furthermore, the chemical fibers need to be cut into segments or broken up.

[0035] Furthermore, the additive is selected from one or more of acidic substances and alkaline substances.

[0036] Some cleaning products and fermented food residues in the home may produce acidic substances that enter the pipes. The acidic substances will corrode the pipe material and affect the service life of the pipes. The present invention uses them as an optional component to simulate the corresponding corrosive environment.

[0037] Some detergents used for household cleaning may contain alkaline substances that flow into the pipes. The alkaline substances will also have a certain impact on the pipes. The present invention uses it as an optional component to simulate the situation of the pipes in an alkaline environment.

[0038] Furthermore, the acidic substance is selected from one or more of inorganic acids (such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid) and organic acids (such as acetic acid, citric acid, oxalic acid, tartaric acid).

[0039] Furthermore, the alkaline substance is selected from one or more of strong bases (such as sodium hydroxide, potassium hydroxide) and weak base salts (such as sodium carbonate, sodium bicarbonate, potassium carbonate, potassium bicarbonate).

[0040] Another object of the present invention is to provide a method for preparing the composition for evaluating pipeline maintenance performance, comprising the following steps:

[0041] S1, mixing metal oxide and hydrogen peroxide, and ultrasonically treating the mixture to obtain hydroxylated metal oxide;

[0042] S2, blending the hydroxylated metal oxide and the silane coupling agent, heating and stirring to react, to obtain a silane coupling agent-modified hydroxylated metal oxide;

[0043] S3, blending the silane coupling agent-modified hydroxylated metal oxide, carboxymethyl cellulose, and an activator, heating and stirring to react, to obtain an intermediate product;

[0044] S4, blending the intermediate product and gum arabic, and stirring uniformly to obtain a modified metal oxide;

[0045] S5, adding grease to the simulated pipeline;

[0046] S6. Blending the fibers and dirt particles to obtain a blend, and adding 40-60 wt% of the blend to the simulated pipeline;

[0047] S7, adding modified metal oxide and organic nutrient source into the simulated pipeline;

[0048] S8. Add the remaining blend, additives, and water to the simulated pipeline to obtain the composition for pipeline maintenance performance evaluation.

[0049] Furthermore, in step S1, the metal oxide is selected from one or more of iron chips, copper chips, aluminum chips, stainless steel chips, brass chips, and aluminum alloy chips.

[0050] During long-term use, metal components in household pipes will produce metal oxides due to corrosion, friction, and other reasons. These metal oxides not only affect the drainage performance of the pipes, but may also accelerate pipe corrosion. The present invention incorporates them to enhance the realism of the simulation.

[0051] Furthermore, in step S2, the temperature of the heating and stirring reaction is 70-90°C.

[0052] Furthermore, in step S3, the mass ratio of the silane coupling agent-modified hydroxylated metal oxide to the carboxymethyl cellulose is 1:(0.3-2).

[0053] Furthermore, in step S3, the temperature of the heating and stirring reaction is 30-50°C.

[0054] Furthermore, the material of the simulated pipe is selected from one or more of PVC, PPR, and metal pipe.

[0055] Furthermore, the simulated pipe has a diameter of 2-5 cm and a length of 20-50 cm.

[0056] Another object of the present invention is to provide an application of the above-mentioned composition for pipeline maintenance performance evaluation in pipeline maintenance product development and quality inspection.

[0057] Another object of the present invention is to provide a method for evaluating the performance of pipeline maintenance products using the above-mentioned composition for evaluating pipeline maintenance performance.

[0058] Furthermore, the performance evaluation method has a cycle of 1-7 days.

[0059] The present invention has the following beneficial effects:

[0060] The present invention provides a composition for evaluating pipeline maintenance performance and a preparation method thereof. The composition comprises components such as grease, a modified metal oxide, and dirt particles. The modified metal oxide is prepared by first grafting a hydroxylated metal oxide with a silane coupling agent, then reacting the amino groups on the silane coupling agent with activated carboxyl groups on carboxymethyl cellulose to produce an intermediate product, which is then blended with gum arabic. The modified metal oxide incorporates the organic group carboxymethyl cellulose, enhancing compatibility with the remaining components and facilitating uniform dispersion. Gum arabic, which contains numerous hydroxyl groups, further enhances the compatibility of the modified metal oxide with the remaining components through hydrogen bonding and other interactions. The interactions enhance the stability of the components and prevent accidental dislodging.

[0061] This product meticulously selects a variety of ingredients to comprehensively simulate the complex contamination environment found in household plumbing. Each component precisely corresponds to various types of actual household plumbing stains. In kitchen plumbing, ingredients like grease and organic nutrients simulate the accumulation of everyday oil and food residue. In bathroom plumbing, fibrous materials like hair and dandruff, as well as debris from rusted metal parts, are also realistically simulated. This highly accurate simulation allows for precise testing of the performance of pipe maintenance products in real-world use scenarios, providing a reliable basis for product development and quality testing, ensuring that evaluation results are more closely aligned with real-world usage.

[0062] In terms of efficiency, traditional evaluation cycles can take weeks or even months, but this invention shortens this to 1-7 days, significantly accelerating product development and iteration, reducing R&D costs for companies, and enabling faster market entry for new products. This evaluation method eliminates reliance on specialized instruments and instead employs simple, intuitive visual scoring and tactile evaluation methods, making it accessible to both ordinary consumers and small businesses. This streamlines the evaluation process, lowers the barrier to entry, promotes fair competition, fosters healthy development of the pipeline maintenance product market, and facilitates consumer selection. DETAILED DESCRIPTION

[0063] In order to more clearly illustrate the technical solutions of the present invention, the following examples are given. Unless otherwise stated, the raw materials, reactions and post-processing methods mentioned in the examples are common raw materials on the market and technical methods well known to those skilled in the art.

[0064] The terms "preferred," "preferably," "more preferred," and the like, used herein, refer to embodiments of the invention that may provide certain benefits under certain circumstances. However, other embodiments may also be preferred under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.

[0065] It should be understood that, except in any operating examples, or where otherwise indicated, all numbers expressing, for example, quantities of ingredients used in the specification and claims are to be understood as being modified in all instances by the term "about." Accordingly, unless indicated to the contrary, the numerical parameters set forth in the following specification and appended claims are approximations that may vary depending upon the desired properties to be obtained by the present invention.

[0066] The examples of the present invention use the following raw materials:

[0067] Soybean oil was purchased from Yihai Kerry Food Marketing Co., Ltd.

[0068] Butter was purchased from Luohe Nori Halal Oil Co., Ltd.

[0069] White oil was purchased from Maoming Yuanmao Petrochemical Co., Ltd.

[0070] The metal oxides were iron and copper chips in a mass ratio of 1:1. The iron chips were purchased from Hebei Chisheng Metal Products Co., Ltd., and the copper chips were purchased from Jiangxi Copper Group Co., Ltd.

[0071] The river sand was dirt particles purchased from Guangzhou Huizhong Sand Industry Co., Ltd.

[0072] Construction dust is dirt particles that collect around construction sites;

[0073] Scale is dirt particles that are formed by the long-term deposition of water in pipes;

[0074] Starch was an organic nutrient source purchased from Shandong Fuyang Biotechnology Co., Ltd.;

[0075] Milk powder was an organic nutrient source and was purchased from Yili Dairy Co., Ltd.;

[0076] Hair is fiber and is collected from offline barbershops;

[0077] Cotton fiber was purchased from Shandong Huafang Co., Ltd.

[0078] Acetic acid was used as an additive and was a 1 mol / L aqueous solution of acetic acid purchased from Jiangsu Suopu Chemical Co., Ltd.

[0079] Sodium carbonate was used as an additive, which was a 1 mol / L sodium carbonate aqueous solution purchased from Tianjin Bohai Chemical Co., Ltd.

[0080] Gum Arabic, molecular weight 300,000, was purchased from Shanghai MacLean Biochemical Technology Co., Ltd.;

[0081] Carboxymethyl cellulose, molecular weight 200,000, was purchased from Shanghai Jingchun Industrial Co., Ltd.;

[0082] KH550 is a silane coupling agent purchased from Guangzhou Yinuo Chemical Technology Co., Ltd.

[0083] MES, 2-morpholineethanesulfonic acid buffer solution, pH 6, purchased from Zhongshan Dixin Chemical Co., Ltd.;

[0084] 1-Ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride, activator, purchased from Zhongshan Dixin Chemical Co., Ltd.;

[0085] N-hydroxysuccinimide, an activator, was purchased from Guangdong Wengjiang Chemical Reagent Co., Ltd.;

[0086] The simulated pipe is made of PVC, with a diameter of 3 cm and a length of 30 cm.

[0087] The components and their mass fractions of Examples 1-3 of the present invention and Comparative Example 1 are shown in Table 1:

[0088] Table 1 Components and their mass fractions of Examples 1-3 and Comparative Example 1

[0089]

[0090]

[0091] The preparation method of the antibacterial washing machine tank cleaning block composition of Examples 1-3 above comprises the following steps:

[0092] S1. Mixing a metal oxide and 20 wt% hydrogen peroxide in a mass ratio of 1:10, ultrasonically treating the mixture for 1 h, filtering, washing, and drying the mixture to obtain a hydroxylated metal oxide;

[0093] S2, using 95 wt % ethanol as a solvent, blending the hydroxylated metal oxide and the silane coupling agent in a mass ratio of 1:0.1, heating to 80° C. and stirring for reaction for 3 h, centrifuging, washing, and drying to obtain a silane coupling agent-modified hydroxylated metal oxide;

[0094] S3. Using MES as a solvent, the silane coupling agent-modified hydroxylated metal oxide, carboxymethyl cellulose, 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride, and N-hydroxysuccinimide are blended in a mass ratio of 1:1:0.2:0.1, heated to 40° C., stirred for reaction for 15 h, centrifuged, washed, and dried to obtain an intermediate product;

[0095] S4, blending the intermediate product, gum arabic, and water in a mass ratio of 1:0.1:1, stirring evenly, and drying to obtain a modified metal oxide;

[0096] S5. Melt soybean oil, beef tallow, and white oil, mix them evenly, drip them into the simulated pipe, rotate the simulated pipe, and cool naturally;

[0097] S6. Evenly mix the hair, cotton fiber, river sand, construction dust, and scale to obtain a blend, add 50 wt% of the blend to the simulated pipe, and compact;

[0098] S7, adding the modified metal oxide, starch, and milk powder into the simulated pipe in sequence and shaking;

[0099] S8. Add the remaining blend, acetic acid, sodium carbonate, and water to the simulated pipeline in sequence and shake to obtain the composition for pipeline maintenance performance evaluation.

[0100] Comparative Example 1

[0101] The difference between Comparative Example 1 and Example 1 is that the carboxymethyl cellulose in step S3 is replaced by acetic acid, and the remaining components and preparation method are the same as those in Example 1.

[0102] Test Case

[0103] Performance tests were performed on the compositions for pipeline maintenance performance evaluation of Examples 1-3 and Comparative Example 1.

[0104] Test method:

[0105] Prepare:

[0106] L1. The compositions for pipeline maintenance performance evaluation of Examples 1-3 and Comparative Example 1 were respectively placed into simulated pipes (made of PVC, 3 cm in diameter, 30 cm in length). Three simulated pipes were prepared for each composition.

[0107] L2. Three commercially available pipeline maintenance products were added to the simulated pipelines of each composition: A (Mootaa, model 500 mL, purchased from Hengyi Trading Co., Ltd.), B (GREEN GOBBLER, model 458 mL, purchased from the Indonesian market), and C (Global Warehouse Pipeline Maintenance Agent, model 500 mL, purchased from Taobao);

[0108] L3, repeat L1 and L2 once as a control;

[0109] test:

[0110] Cleaning effect evaluation: During the 5-day evaluation period, the cleanliness of the inner wall of the pipe should be observed at least once a day, including the peeling of dirt, grease residue, and fiber removal. The initial state is used as a control to evaluate the cleaning ability of the maintenance product on various types of dirt in the composition. The visual scoring method is used to divide the cleanliness into multiple levels (e.g., 1-5 points, 1 point means almost no cleaning effect, 5 points means complete cleaning).

[0111] Scaling inhibition assessment: After the 5-day evaluation period, the formation of new scale on the inner wall of the pipeline and the reduction of existing scale are observed. The same scoring system of 1-5 points is used. 1 point indicates that a large amount of new scale is generated and the existing scale is not reduced. 2 points indicate that a small amount of new scale is generated and the existing scale is slightly reduced. 3 points indicate that there is basically no new scale generation and the existing scale is reduced to a certain extent. 4 points indicate that there is no new scale generation and the existing scale is significantly reduced. 5 points indicate that the existing scale has almost completely disappeared and no new scale is generated.

[0112] Inner wall smoothness assessment: After the 5-day evaluation period, the smoothness of the inner wall of the pipe is felt by visual observation and touch, using a scoring system of 1-5 points. 1 point means that the inner wall is still rough, with obvious bumps and depressions; 2 points means that the roughness of the inner wall is slightly reduced; 3 points means that the inner wall feels relatively smooth, but some minor unevenness can still be detected; 4 points means that the inner wall is relatively smooth, with only very slight unevenness; 5 points means that the inner wall is very smooth, with almost no unevenness.

[0113] Data recording and analysis: Record the scores of various indicators at each evaluation time point, conduct statistical analysis on the scores of cleaning effect, scale inhibition and inner wall smoothness, and obtain the maintenance performance of the maintenance product by combining the scores to judge the quality of the maintenance product.

[0114] The test results are shown in Table 2.

[0115] Table 2 Performance test results of the composition used for pipeline maintenance performance evaluation

[0116]

[0117]

[0118] As can be seen from Table 2, the cleaning effect scores obtained by using different pipeline maintenance products in Examples 1-3 are all clearly distinguished, the scaling inhibition scores are all clearly distinguished, and the inner wall smoothness scores are also clearly distinguished, indicating that the examples can well distinguish the use effects of different pipeline maintenance products, and the repeated test scores of the same pipeline maintenance product are close, indicating that the examples have good reproducibility and high reliability; in Comparative Example 1, the carboxymethyl cellulose of S3 is replaced by acetic acid, so that the modified metal oxide does not introduce cellulose groups, which reduces the compatibility with the remaining components and makes the components easily agglomerated, resulting in no obvious distinction in the cleaning effect scores obtained by using different pipeline maintenance products, no obvious distinction in the scaling inhibition scores, and no obvious distinction in the inner wall smoothness scores, indicating that Comparative Example 1 cannot distinguish the use effects of different pipeline maintenance products, and the repeated test scores of the same pipeline maintenance product have obvious differences, indicating that Comparative Example 1 has poor reproducibility and low reliability.

[0119] The above results show that the embodiment of the present invention can comprehensively and accurately evaluate the performance of pipeline maintenance products, providing a reliable basis for research and development and quality inspection. The comparison example is unreasonable in simulation, resulting in large evaluation errors, and is unable to effectively distinguish between good and bad pipeline maintenance products, making it difficult to meet market and enterprise needs. This highlights the advantages and feasibility of the evaluation method of the embodiment.

[0120] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

[0121] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A composition for evaluating pipeline maintenance performance, characterized in that: The composition for evaluating pipeline maintenance performance includes the following components in mass fractions: The modified metal oxide is an intermediate product obtained by grafting carboxymethyl cellulose with hydroxylated metal oxide and then blending with gum arabic.

2. The composition for pipeline maintenance performance evaluation according to claim 1, characterized in that: The mass ratio of the intermediate product to gum arabic is 1:(0.05-0.1).

3. The composition for pipeline maintenance performance evaluation according to claim 1, characterized in that: The oil is selected from one or more of animal oil, vegetable oil and mineral oil.

4. The composition for pipeline maintenance performance evaluation according to claim 1, characterized in that: The dirt particles are selected from one or more of mud, dust, and scale.

5. The method for preparing the composition for pipeline maintenance performance evaluation according to any one of claims 1 to 4, characterized in that: A method for preparing a composition for evaluating pipeline maintenance performance comprises the following steps: S1, mixing metal oxide and hydrogen peroxide, and ultrasonically treating the mixture to obtain hydroxylated metal oxide; S2, blending the hydroxylated metal oxide and the silane coupling agent, heating and stirring to react, to obtain a silane coupling agent-modified hydroxylated metal oxide; S3, blending the silane coupling agent-modified hydroxylated metal oxide, carboxymethyl cellulose, and an activator, heating and stirring to react, to obtain an intermediate product; S4, blending the intermediate product and gum arabic, and stirring uniformly to obtain a modified metal oxide; S5, adding grease to the simulated pipeline; S6. Blending the fibers and dirt particles to obtain a blend, and adding 40-60 wt% of the blend to the simulated pipeline; S7, adding modified metal oxide and organic nutrient source into the simulated pipeline; S8. Add the remaining blend, additives, and water to the simulated pipeline to obtain the composition for pipeline maintenance performance evaluation.

6. The method for preparing the composition for pipeline maintenance performance evaluation according to claim 5, characterized in that: In step S1, the metal oxide is selected from one or more of iron chips, copper chips, aluminum chips, stainless steel chips, brass chips, and aluminum alloy chips.

7. The method for preparing the composition for pipeline maintenance performance evaluation according to claim 5, characterized in that: In step S2, the temperature of the heating and stirring reaction is 70-90°C.

8. The method for preparing the composition for pipeline maintenance performance evaluation according to claim 5, characterized in that: In step S3, the mass ratio of the silane coupling agent-modified hydroxylated metal oxide to the carboxymethyl cellulose is 1:(0.3-2).

9. The method for preparing the composition for pipeline maintenance performance evaluation according to claim 5, characterized in that: In step S3, the temperature of the heating and stirring reaction is 30-50°C.

10. Use of the composition for pipeline maintenance performance evaluation according to any one of claims 1 to 4 in pipeline maintenance product development and quality inspection.

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