Glass fiber impregnating compound pipeline cleaning agent and preparation method thereof

Abstract

The invention provides a glass fiber impregnating compound pipeline cleaning agent which comprises the following components in percentage by weight: 20-60% of a main solvent, 20-60% of an auxiliary solvent, 10-30% of a solvent and the balance of water. 10-35% of an auxiliary solvent; 1-12% of an activator; 0.2 to 10% of a surfactant; 10 to 40 percent of water; wherein the main solvent is an ether solvent which has good solubility on epoxy resin and polyurethane in the impregnating compound; the auxiliary solvent is an ester solvent which has a good dissolving effect on polyunsaturated polyester and PVAc; and the cosolvent is an alkaline substance. By adopting the green water-based cleaning agent, dirt in a glass fiber impregnating compound pipeline can be quickly and thoroughly removed, and no substance harmful to human health and unfriendly to the environment is left.

Description

Technical Field

[0001] The present application relates to the technical field of chemical cleaning agents, and in particular to a cleaning agent specially designed for glass fiber sizing agent pipelines and a preparation method thereof. Background Art

[0002] Glass fiber sizing can change the surface state of glass fiber, which not only meets the requirements of the processing performance of glass fiber raw yarn in the subsequent process, but also promotes the combination of glass fiber reinforcement and polymer matrix in composite materials. It is an important factor that determines the final performance of glass fiber reinforced composite materials. Sizing agent is an emulsion mixed with various organic and inorganic substances. In the production process of glass fiber, the sizing agent emulsion settles and deposits in the pipeline during use, resulting in blockage of the sizing agent pipeline. The cleanliness of the sizing agent pipeline is crucial to ensure product quality and production efficiency. However, traditional cleaning agents often contain substances that are harmful to the environment, such as halogenated hydrocarbons such as monofluorodichloroethane and dichloromethane, which not only pollute the environment, but also may threaten the health of operators; and existing water-based cleaning agents can only remove small dirt and impurities on the inner wall of the pipeline, and the cleaning effect is usually general, and stubborn dirt cannot be removed. Some cleaning agents have good cleaning effects, but the cost is high, which is not conducive to the long-term development of enterprises. Therefore, it is particularly important to develop a cleaning agent that is both environmentally friendly, efficient and cost-effective. Summary of the invention

[0003] The present application aims to provide a glass fiber impregnant pipe cleaning agent, which is a green and environmentally friendly water-based pipe cleaning agent. The cleaning agent does not contain any substances harmful to human health, is environmentally friendly, and can quickly and thoroughly remove dirt in the pipe.

[0004] According to one aspect of the present application, a glass fiber sizing pipeline cleaning agent is provided, comprising the following components, wherein the content of each component is expressed in weight percentage as follows:

[0005]

[0006]

[0007] Wherein, the main solvent is one or more of propylene glycol methyl ether, propylene glycol butyl ether, butylene glycol dimethyl ether, dipropylene glycol dimethyl ether, propylene glycol methyl ether, diglycerol monomethyl ether and diglycerol monoethyl ether.

[0008] Wherein, the content of each component is expressed as follows in weight percentage:

[0009]

[0010] Wherein, the auxiliary solvent is one or more of ethyl ester solvents selected from the group consisting of propylene glycol diacetate, ethylene glycol diacetate, diethyl carbonate, ethyl acetate, and ethyl butyrate.

[0011] Wherein, the weight ratio of the main solvent to the auxiliary flux is 0.7:1 to 3.6:1.

[0012] Wherein, the main solvent is propylene glycol methyl ether and butylene glycol dimethyl ether.

[0013] Wherein, the auxiliary solvent is propylene glycol diacetate and ethylene glycol diacetate.

[0014] Wherein, the activator is at least one of sodium hydroxide, soda ash and sodium peroxide; and the surfactant is an anionic surfactant.

[0015] Wherein, the anionic surfactant is one of sodium dodecylbenzene sulfonate, sodium dodecyl sulfate and dodecyltrimethylammonium sulfate or a mixture of any of them.

[0016] Wherein, the cleaning agent is a semi-aqueous cleaning agent and does not contain a halogenated hydrocarbon solvent.

[0017] The glass fiber sizing agent pipeline cleaning agent of the present application has a main solvent selected that has good solubility for epoxy resin and polyurethane in the sizing agent; specifically, it is one or more of propylene glycol methyl ether, propylene glycol butyl ether, butylene glycol dimethyl ether, dipropylene glycol dimethyl ether, propylene glycol methyl ether, diglycerol monomethyl ether, and diglycerol monoethyl ether.

[0018] The auxiliary solvent is one or more of propylene glycol diacetate, ethylene glycol diacetate, diethyl carbonate, ethyl acetate, and ethyl butyrate, which has a good dissolving effect on polyunsaturated polyester and PVAc in the impregnant pipeline, can enhance the dissolving ability of the cleaning agent, and has a good cleaning effect.

[0019] The activator can enhance the solubility of the main solvent and the auxiliary solvent and further dissolve the residual wetting agent in the pipeline; specifically, it is at least one of sodium hydroxide, soda ash, and sodium peroxide.

[0020] The surfactant can enhance the wettability and detergency of the cleaning agent. The preferred embodiment is to select the anionic surfactant as one of sodium dodecylbenzene sulfonate, sodium dodecyl sulfate and dodecyltrimethylammonium sulfate or a mixture of any of them.

[0021] The main function of this cleaning agent is to clean the glass fiber sizing agent pipeline. At present, the main components of glass fiber sizing agent are mixtures of epoxy resin, polyurethane, unsaturated polyester, PVAc resin, silane coupling agent, lubricant, etc. Among them, epoxy resin accounts for the largest proportion, followed by polyurethane, unsaturated polyester, PVAc resin, and the content of silane coupling agent and lubricant is relatively low. Adding 20-60% of the main solvent has good solubility for epoxy resin and polyurethane in the sizing agent; in addition, adding 10-35% of the auxiliary solvent can have a good dissolving effect on polyunsaturated polyester and PVAc in the sizing agent pipeline.

[0022] Water is preferably deionized water: as a solvent and diluent, accounting for the remainder of the total amount, a content ratio of 16 to 40% can ensure the stability and use effect of the cleaning agent.

[0023] In some embodiments, the cleaning agent can be added with an appropriate amount of acid-base regulator or thickener to adjust the pH value and viscosity of the solution as needed. The thickener is generally selected from silicates, which can increase the viscosity of the detergent, improve its adhesion and detergency, and also increase the stability of the detergent, avoid stratification or dehydration, and play a role in adjusting the pH value. The addition ratio is expressed in weight percentage as: 0.1%-0.3%, preferably sodium silicate. The pH value is controlled at 9-13, and the viscosity is controlled at 50-200mPa.S..

[0024] According to another aspect of the present application, a method for preparing the above-mentioned glass fiber sizing agent pipeline cleaning agent is provided, comprising the following steps:

[0025] S1. Pre-preparing a basic solution: adding 1 / 10 to 1 / 8 of the total amount of water into a container, then adding a main solvent, stirring and dissolving, to form a first aqueous solution;

[0026] S2, pre-dissolve the surfactant: slowly add the surfactant into the S1 container, stirring while adding, the stirring speed is controlled at 200-300r / min, and heated to 65-75°C until the surfactant is fully dissolved to prepare the second aqueous solution;

[0027] S3, pre-dissolving auxiliary solvent: add auxiliary solvent into S2 container, stir while adding, ensure that auxiliary solvent is fully emulsified and dissolved, and prepare the third aqueous solution;

[0028] S4, dissolving and dispersing: heating the S3 container, heating the third aqueous solution to 65-75° C., controlling the stirring speed at 150-350 r / min, and stirring for 2.5-3.5 hours;

[0029] S5. Adjusting the concentration of the solution: cooling the third aqueous solution to room temperature, and adding a surplus of water to obtain the cleaning agent for the glass fiber pipe.

[0030] Compared with the prior art, the present application has the following beneficial effects:

[0031] The impregnating agent pipeline cleaning agent prepared by the present application has a reasonable formula composition and a significant cleaning effect. All components of the cleaning agent meet environmental protection requirements, do not contain any harmful substances, and are harmless to the environment and human body. The environmentally friendly and efficient glass fiber impregnating agent pipeline cleaning agent and its preparation method provided by the present application not only solve the problems of serious environmental pollution, poor cleaning effect or high cost of cleaning agents in the prior art, but also provide enterprises with an economical, environmentally friendly and efficient cleaning solution, which has significant technological advancement and broad market application prospects. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be arbitrarily combined with each other.

[0033] The infiltrant pipeline cleaning agent of the present application comprises the following components, and the content of each component is expressed in weight percentage as follows:

[0034]

[0035] Preferably, the weight percentage of each component is expressed as follows:

[0036]

[0037]

[0038] More preferably, the weight percentage of each component is expressed as follows:

[0039]

[0040] Wherein, the main solvent is one or more of propylene glycol methyl ether, propylene glycol butyl ether, butylene glycol dimethyl ether, dipropylene glycol dimethyl ether, propylene glycol methyl ether, diglycerol monomethyl ether, and diglycerol monoethyl ether. Preferably, propylene glycol methyl ether and butylene glycol dimethyl ether are used.

[0041] The auxiliary solvent is one of propylene glycol diacetate, ethylene glycol diacetate, diethyl carbonate, ethyl acetate, ethyl butyrate or a mixture of any of them, preferably propylene glycol diacetate and ethylene glycol diacetate.

[0042] The weight ratio of the main solvent to the auxiliary flux is 0.7:1 to 3.6:1, preferably 1.5:1 to 2.5:1.

[0043] The activator is at least one of sodium hydroxide, soda ash and sodium peroxide.

[0044] The thickener is silicate, preferably sodium silicate.

[0045] The surfactant is an anionic surfactant; preferably, it is one of sodium dodecylbenzene sulfonate, sodium dodecyl sulfate and dodecyltrimethylammonium sulfate or a mixture of any of them.

[0046] The preparation method of the cleaning agent for glass fiber pipes comprises the following steps:

[0047] S1. Prefabricated base solution: Add 1 / 10 to 1 / 8 of the total amount of water in a container, add the main solvent, stir and dissolve to form a first aqueous solution;

[0048] S2. Pre-dissolved surfactant: Slowly add surfactant to S1 container, stirring while adding, control stirring speed at 200-300r / min, heat to 65-75°C until the surfactant is fully dissolved to prepare a second aqueous solution;

[0049] S3 pre-dissolved auxiliary solvent: adding auxiliary solvent to the S2 container, stirring while adding, to ensure that the auxiliary solvent is fully emulsified and dissolved to prepare a third aqueous solution;

[0050] S4 dissolving and dispersing: heating the S3 container, heating the third aqueous solution to 65-75 ° C, stirring speed controlled at 150-350r / min, stirring for 2.5 to 3.5 hours;

[0051] S5. Adjusting the concentration of the solution: cooling the third aqueous solution to room temperature, and adding excess water to obtain the cleaning agent for the glass fiber pipe.

[0052] Some specific embodiments of the glass fiber sizing of the present application are listed below.

[0053] Example

[0054] In order to further illustrate the beneficial effects of the types of components and the range of component contents selected in the cleaning agent for glass fiber pipes of the present application, some examples of values ​​of the components included in the cleaning agent for glass fiber pipes of the present application are listed below.

[0055] The specific formulas of some embodiments of the cleaning agent for glass fiber pipes of the present application are shown in Table 1. The values ​​in Table 1 are the percentages of the mass of the effective components to the total mass of the cleaning agent.

[0056] It should be pointed out that the specific types, contents and combinations of the components selected in Table 1 do not limit the protection scope of the present application.

[0057] Table 1 Ratio of each effective component of the cleaning agent of this application

[0058]

[0059]

[0060] In order to better illustrate the technical effect of the invention of this application, existing conventional related technology wetting agent pipeline cleaning agents are selected as comparative examples 1 and 2, and pipeline cleaning agents with different content ratios are selected as comparative examples 3 and 4 for comparative testing.

[0061] Comparative Example 1:

[0062] The percentage of the mass of the effective components of the infiltrant pipeline cleaning agent is expressed as follows:

[0063] Dichloromethane: 50%

[0064] Dichloromethane: 3%

[0065] Phenol: 8%

[0066] Methanol: 5%

[0067] Paraffin: 3%

[0068] Penetrant (JFC-2): 1%.

[0069] Comparative Example 2:

[0070] The percentage of the mass of the effective components of the infiltrant pipeline cleaning agent is expressed as follows:

[0071] Dichloromonofluoroethane: 71%

[0072] Formic acid: 10%

[0073] Meta-cresol: 5%

[0074] Methanol: 10%

[0075] Paraffin: 2%

[0076] Penetrant (JFC-2): 2%.

[0077] Comparative Example 3:

[0078] The percentage of the mass of the effective components of the infiltrant pipeline cleaning agent is expressed as follows:

[0079]

[0080] Comparative Example 4:

[0081] The percentage of the mass of the effective components of the infiltrant pipeline cleaning agent is expressed as follows:

[0082]

[0083] The present application tests the cleaning effect and harmful substance residues during the cleaning process of the impregnating agent pipeline. Table 2 records the test results of the impregnating agent pipeline cleaning of Examples 1-9 and Comparative Examples 1-4 of the present application. The cleaning agent circulates in the pipeline for cleaning for 12 hours.

[0084] Table 2 Test of cleaning effect of cleaning agent for glass fiber pipe

[0085]

[0086]

[0087] In Table 2, the residual chlorides of the sizing agent pipeline cleaning agents of Examples 1-9 for cleaning the reinforced glass fiber sizing agent are basically 0, while the residual chlorides of Comparative Examples 1 and 2 in the sizing agent pipeline are much greater than 1, indicating that the cleaning agent prepared by the present application is more environmentally friendly than conventional cleaning agents; although Comparative Examples 3 and 4 are environmentally friendly, the cleaning effect is slightly worse. Among them, Example 6 has the best cleaning effect and environmental protection, with a cleanliness of 9.2 (cleaning effect is 10 points, based on visual inspection of pipeline residues), a VOC content of 7g / L, and a pipeline life of 69 months.

[0088] In summary, the impregnating agent pipe cleaning agent of the present application is a water-based agent. The impregnating agent pipe cleaning agent of the present application does not contain any harmful substances when cleaning pipes and is environmentally friendly. It can quickly and thoroughly remove dirt in the pipes while maintaining a low production cost.

[0089] Finally, it should be noted that in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0090] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A glass fiber sizing agent pipeline cleaning agent, characterized in that: The composition comprises the following components, and the content of each component is expressed as follows in weight percentage: Wherein, the main solvent is one or more of propylene glycol methyl ether, propylene glycol butyl ether, butylene glycol dimethyl ether, dipropylene glycol dimethyl ether, propylene glycol methyl ether, diglycerol monomethyl ether and diglycerol monoethyl ether.

2. The cleaning agent according to claim 1, characterized in that The content of each component is expressed as follows in weight percentage:

3. The cleaning agent according to claim 1, characterized in that The auxiliary solvent is one or more of propylene glycol diacetate, ethylene glycol diacetate, diethyl carbonate, ethyl acetate, and ethyl butyrate.

4. The cleaning agent according to claim 1, characterized in that The weight ratio of the main solvent to the auxiliary flux is 0.7:1 to 3.6:

1.

5. The cleaning agent according to claim 1, characterized in that The main solvents are propylene glycol methyl ether and butylene glycol dimethyl ether.

6. The cleaning agent according to claim 1, characterized in that The auxiliary solvents are propylene glycol diacetate and ethylene glycol diacetate.

7. The cleaning agent according to claim 1, characterized in that The activator is at least one of sodium hydroxide, soda ash and sodium peroxide; the surfactant is an anionic surfactant; and the thickener is silicate.

8. The cleaning agent according to claim 7, characterized in that The anionic surfactant is one of sodium dodecylbenzene sulfonate, sodium dodecyl sulfate and dodecyltrimethylammonium sulfate or a mixture of any of them.

9. The cleaning agent according to claim 1, characterized in that The cleaning agent is a semi-aqueous cleaning agent and does not contain a halogenated hydrocarbon solvent.

10. The method for preparing a cleaning agent according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Prefabricated base solution: Add 1 / 10 to 1 / 8 of the total amount of water in a container, add the main solvent, stir and dissolve to form a first aqueous solution; S2. Pre-dissolved surfactant: Slowly add surfactant to S1 container, stirring while adding, control stirring speed at 200-300r / min, heat to 65-75°C until the surfactant is fully dissolved to prepare a second aqueous solution; S3 pre-dissolved auxiliary solvent: adding auxiliary solvent to the S2 container, stirring while adding, to ensure that the auxiliary solvent is fully emulsified and dissolved to prepare a third aqueous solution; S4 dissolving and dispersing: heating the S3 container, heating the third aqueous solution to 65-75 ° C, stirring speed controlled at 150-350r / min, stirring for 2.5 to 3.5 hours; S5. Adjusting the concentration of the solution: cooling the third aqueous solution to room temperature, and adding excess water to obtain the cleaning agent for the glass fiber pipe.

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