CN112898936B - Rapidly-operated JQ-1 adhesive compounded and modified by organic and inorganic wastes - Google Patents
Rapidly-operated JQ-1 adhesive compounded and modified by organic and inorganic wastes Download PDFInfo
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- CN112898936B CN112898936B CN202110098137.5A CN202110098137A CN112898936B CN 112898936 B CN112898936 B CN 112898936B CN 202110098137 A CN202110098137 A CN 202110098137A CN 112898936 B CN112898936 B CN 112898936B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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Abstract
The invention belongs to the technical field of polyurethane adhesives, and discloses a rapidly-operable compound modified JQ-1 adhesive utilizing organic and inorganic wastes. Under the condition of room temperature, the waste wood powder and the hollow microsphere are compounded to prepare the modified JQ-1 adhesive, and the obtained compounded modified JQ-1 adhesive has the characteristics of low cost, easy operation, excellent performance and contribution to actual production. Solves the problems of low curing speed and thin glue solution of JQ-1 glue. The surface drying time of the compound modified JQ-1 adhesive is shortened, the curing speed is improved, the anti-flowing property is improved, the viscosity of the adhesive solution is increased, the adhesive has good adhesive property, and the water resistance and the heat resistance are superior to those of the unmodified JQ-1 adhesive.
Description
Technical Field
The invention belongs to the technical field of polyurethane adhesives, and relates to a rapidly-operated compound modified JQ-1 adhesive utilizing organic and inorganic wastes. In particular to JQ-1 glue which can be rapidly operated and is modified by organic and inorganic waste.
Background
The JQ-1 adhesive is used as one of isocyanate adhesives, has chemically active isocyanate groups (-NCO), can effectively bond materials such as metal, rubber and the like due to the existence of the groups, can be cured at normal temperature due to small sizing amount, and can be widely applied. However, as the application demand is continuously increased, the problems of low curing speed, thin glue solution and the like of the JQ-1 glue are gradually exposed, so that the application of the JQ-1 glue is limited, and the problem existing in the current stage of the JQ-1 glue is solved by selecting a proper method, so that the improvement of the performance of the JQ-1 glue is of great significance. The JQ-1 glue has high production cost, and the solvent used at present is chlorobenzene with certain toxicity, so that when the JQ-1 glue is modified, the selection of nontoxic, environment-friendly and low-cost raw materials is important; in addition, considering the complexity of the JQ-1 glue production process, the process of modifying the JQ-1 glue should be as simple as possible, so that the increase of the difficulty of the operation process and the increase of additional production cost are avoided, or potential safety hazards exist due to the complex operation. In addition, the JQ-1 glue is often used as a cross-linking agent for preparing a novel adhesive at present, so that the comprehensive performance of the JQ-1 glue is improved, and the possibility is also provided for improving the performance of the novel adhesive prepared by using the JQ-1.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the modified JQ-1 glue which can be rapidly operated and is compounded by utilizing organic and inorganic wastes, and the waste wood powder and the hollow microspheres are compounded to be used for preparing the modified JQ-1 glue under the condition of room temperature, so that the compounded modified JQ-1 glue has the characteristics of low cost, easiness in operation, excellent performance and contribution to actual production. Solves the problems of low curing speed and thin glue solution of JQ-1 glue. The surface drying time of the compound modified JQ-1 adhesive is shortened, the curing speed is improved, the anti-flowing property is improved, the viscosity of the adhesive solution is increased, the adhesive has good adhesive property, and the water resistance and the heat resistance are superior to those of the unmodified JQ-1 adhesive.
The above object of the present invention is achieved by the following technical solutions:
a JQ-1 adhesive which can be rapidly operated and is compounded and modified by utilizing organic and inorganic wastes; the compound modified JQ-1 adhesive is an adhesive; the adhesive is prepared from filler and JQ-1 adhesive.
The filler is a compound filler of waste wood powder and hollow microspheres.
The filler is a constant weight filler which is dried.
The mass of the filler accounts for 6% of the total mass of the adhesive.
The mass of the waste wood powder accounts for 20% -80% of the total mass of the filler.
The mass of the hollow microsphere accounts for 20% -80% of the total mass of the filler.
The preparation method of the JQ-1 adhesive capable of being rapidly operated and compounded and modified by organic and inorganic wastes comprises the following steps of:
(1) Respectively weighing 94 parts of JQ-1 glue solution, 1.2-4.8 parts of waste wood powder and 1.2-4.8 parts of hollow microspheres;
(2) Mixing the waste wood powder and the hollow microspheres weighed in the step (1) according to different proportions to obtain a compound filler;
(3) Adding the compound filler obtained in the step (2) into the weighed JQ-1 glue solution, and stirring at 25 ℃ for at least 30min to obtain the compound modified JQ-1 glue.
The agricultural and forestry biomass resources in China are rich, but a large amount of waste such as wood chips, shells, shavings, sawdust and the like can be produced in the process of processing forestry products. The accumulation of a large amount of waste occupies not only space, but also an improper treatment method places a burden on the environment. Therefore, the waste biomass resources can be fully and effectively utilized, so that the resource utilization rate can be improved, and the additional value of the waste can be improved. The waste wood powder obtained by recycling and crushing has low price, wide sources and convenient acquisition, and can reduce the production cost when being applied to JQ-1 glue; and the recovery and crushing process does not damage the composition of the wood material, namely, the wood material contains a large amount of cellulose, hemicellulose and lignin, is rich in hydroxyl (-OH) and has active hydrogen atoms (-H) capable of carrying out crosslinking reaction with-NCO, so that the waste wood powder is added into the JQ-1 glue to improve the curing speed and the bonding performance of the glue, and has feasibility.
Besides biomass raw materials, inorganic fillers are widely applied to material modification researches for better improvement of material performance, and the characteristics of the inorganic fillers are usually combined to make correct selection in the use process. The main component of the hollow microsphere is SiO 2 And Al 2 O 3 The adhesive also contains hydroxyl, has the characteristics of low water absorption, fine particles, high temperature resistance, good chemical stability, dispersibility and the like, and can also achieve the purpose of improving the performance of the adhesive when used in JQ-1 adhesive, so that the adhesive has the advantages of hollow microspheres. At present, the hollow microbeads sold in the market are various in types, the fact that the cost is an element in actual production is considered, the coal ash hollow microbeads are more practical, the hollow microbeads are products separated from the coal ash, the excellent performance of the hollow microbeads is reserved, the modification requirement can be met, and the hollow microbeads have the advantage of low price compared with the artificial hollow microbeads.
Compared with the prior art, the invention has the beneficial effects that:
(1) The compound modified JQ-1 adhesive provided by the invention is prepared by compounding organic and inorganic wastes, and overcomes the defect that single filler modification has one-sided property.
(2) The used compound raw materials are the recovery products of wastes, so that the production cost is reduced, and the utilization rate of resources and the added value of the recovery materials are improved.
(3) The compound modified JQ-1 glue obtained after compound modification has the advantages of improved curing speed, improved anti-fluidity and improved bonding performance.
(4) The compound modified JQ-1 adhesive has the effect of improving the water resistance and the thermal stability of the adhesive.
(5) The compound modified JQ-1 adhesive has the advantages of simple process, convenient operation, short time consumption, no new organic solvent introduction under the condition of room temperature, good environmental protection and suitability for actual production.
The raw materials used in the invention are all recovery products of wastes, and the wood powder has the characteristics of wide sources, low price, no toxicity, environmental protection and the like, wherein the waste wood powder is waste leftover materials generated in the process of manufacturing wood products, and is obtained by recovery and crushing; the hollow micro beads are functional materials separated from the fly ash and obtained through processes such as impurity removal and the like, so that the production cost is reduced, and the utilization rate of resources and the added value of the recycled materials are improved. The excellent properties of biomass organic fillers and inorganic fillers are utilized to make up the defect of one-sided property of a single filler by compounding and modifying the JQ-1 glue; the problems that the JQ-1 glue is low in solidification speed, the glue solution is thin, and the glue layer is hard and brittle after solidification are solved, the solidification speed of the obtained compound modified JQ-1 glue is improved, namely the surface drying time is shortened, the maximum time is reduced by 20 hours, and the problems that the time cost is caused by the fact that the solidification speed is too slow and the curing speed is too fast and can not be fully contacted with the surface of a glued substrate are solved; the anti-flowing performance of the JQ-1 glue is improved, so that the viscosity of the glue solution is increased, the glue solution is prevented from flowing out of the bonding surface due to over-dilution, and the curing performance is integrally improved; the anti-flowing property is improved, the viscosity is increased, and the overall curing property is improved; compared with unmodified JQ-1 rubber, the adhesive property is obviously improved, the intermetallic adhesive effect is better, the maximum can be improved by about 1.39 times, the modification effect between metal and rubber is obvious, and the maximum can be improved by about 1.85 times; the water resistance and the thermal stability of the adhesive are ensured, meanwhile, the compound filler can be uniformly dispersed in the JQ-1 adhesive, no additional modification treatment is needed, the complex operation process in chemical modification is simplified, new components or other toxic solvents are prevented from being added into the system, the operation is convenient and time-consuming, and the safety problem possibly caused by improper operation can be effectively avoided; the additional production cost brought by the complex production process can be effectively reduced, or the safety problem possibly brought by improper operation can be avoided. In addition, the optimization of the performance and operation of the JQ-1 adhesive provides convenience for producing a novel adhesive by taking the JQ-1 adhesive as a raw material, and has important significance for expanding the application field of the JQ-1 adhesive.
Drawings
FIG. 1 is a graph of thermal weight loss of the glue line after curing of the waste wood flour and hollow microsphere 1:1 compound modified JQ-1 glue of example 1 and the glue line after curing of the comparative example 1JQ-1 glue.
FIG. 2 is a graph of the weight loss rate of the glue line after curing of the waste wood flour and hollow microsphere 1:1 compound modified JQ-1 glue of example 1 and the glue line after curing of the comparative example 1JQ-1 glue.
FIG. 3 is an SEM image of a cross section of a gum layer of comparative example 1JQ-1 gum after curing.
FIG. 4 is an SEM image of a cross section of a glue line after curing of the 1:1 compound modified JQ-1 glue of the waste wood flour and the hollow microspheres of example 1.
Detailed Description
The present invention is described in detail below by way of specific examples, but the scope of the present invention is not limited thereto. Unless otherwise specified, the experimental methods used in the present invention are all conventional methods, and all experimental equipment, materials, reagents, etc. used can be obtained from commercial sources.
Example 1
Drying the filler to constant weight under vacuum, and respectively weighing 3 parts of waste wood powder and 3 parts of hollow microspheres and mixing according to a proportion to obtain a compound filler; 94 parts of JQ-1 glue solution is weighed, the obtained compound filler is added into the JQ-1 glue solution, and the mixture is stirred for 30min at 25 ℃ to obtain the rapidly-operated compound modified JQ-1 glue by utilizing organic and inorganic wastes.
Example 2
Drying the filler to constant weight under vacuum, and respectively weighing 4.8 parts of waste wood powder and 1.2 parts of hollow microspheres and mixing according to a proportion to obtain a compound filler; 94 parts of JQ-1 glue solution is weighed, the obtained compound filler is added into the JQ-1 glue solution, and the mixture is stirred for 30min at 25 ℃ to obtain the rapidly-operated compound modified JQ-1 glue by utilizing organic and inorganic wastes.
Example 3
Drying the filler to constant weight under vacuum, and respectively weighing 4 parts of waste wood powder and 2 parts of hollow microspheres and mixing according to a proportion to obtain a compound filler; 94 parts of JQ-1 glue solution is weighed, the obtained compound filler is added into the JQ-1 glue solution, and the mixture is stirred for 30min at 25 ℃ to obtain the rapidly-operated compound modified JQ-1 glue by utilizing organic and inorganic wastes.
Example 4
Drying the filler to constant weight under vacuum condition, respectively weighing 2 parts of waste wood powder and 4 parts of hollow microspheres, and mixing according to a proportion to obtain a compound filler; 94 parts of JQ-1 glue solution is weighed, the obtained compound filler is added into the JQ-1 glue solution, and the mixture is stirred for 30min at 25 ℃ to obtain the rapidly-operated compound modified JQ-1 glue by utilizing organic and inorganic wastes.
Example 5
Drying the filler to constant weight under vacuum, and respectively weighing 1.2 parts of waste wood powder and 4.8 parts of hollow microspheres and mixing according to a proportion to obtain a compound filler; 94 parts of JQ-1 glue solution is weighed, the obtained compound filler is added into the JQ-1 glue solution, and the mixture is stirred for 30min at 25 ℃ to obtain the rapidly-operated compound modified JQ-1 glue by utilizing organic and inorganic wastes.
Comparative example 1
100 parts of JQ-1 glue are weighed for performance test.
Comparative example 2
And (3) drying the filler to constant weight under vacuum, weighing 6 parts of waste wood powder and 94 parts of JQ-1 glue solution respectively, and stirring for 30min at 25 ℃ to obtain the modified JQ-1 glue.
Comparative example 3
And (3) drying the filler to constant weight under vacuum, weighing 6 parts of hollow microspheres and 94 parts of JQ-1 glue respectively, and stirring for 30min at 25 ℃ to obtain the modified JQ-1 glue.
The preparation method can be used for testing the curing performance, the bonding performance, the water resistance, the microcosmic appearance and the thermal stability of the rapidly-operated compound modified JQ-1 adhesive by utilizing organic and inorganic wastes, so that the performance of the compound modified JQ-1 adhesive provided by the invention is further illustrated.
1. Curing Property
The invention reflects the solidification performance of the adhesive through the surface drying time and the anti-flowing performance, and the specific test method is as follows:
(1) Surface drying time: performing surface dry time test according to a GB/T13477.5-2002 building sealing material test method; wherein, the shorter the tack-free time, the faster the cure speed.
(2) Anti-flow properties: weighing a proper amount of adhesive, injecting the adhesive into an iron frame (40 mm multiplied by 10 mm) fixed on a long plate, wiping and flattening the iron frame by using a scraper after the iron frame is filled with the adhesive, rapidly withdrawing the iron frame, placing the long plate at a certain angle, and recording the sagging distance of the adhesive in unit time and reflecting the anti-flowing performance of the adhesive; wherein, the smaller the sagging distance in unit time is, the better the anti-flowing property of the adhesive is.
2. Adhesive property
According to the invention, steel plates and rubber are selected as bonding base materials, materials are bonded according to a method for measuring the tensile shear strength of GB/T7124-2008 adhesive (rigid material to rigid material) and a method for measuring the tensile shear strength of GB/T13936-2014 adhesive and metal bonding, and bonding performance of bonding samples is tested.
3. Water resistance
According to the invention, the water resistance of the adhesive is reflected by the saturated water absorption, and the water resistance test is carried out by immersing the cured adhesive layer in water according to the GB/T1034-2008 plastic water absorption measurement; wherein, the smaller the saturated water absorption, the better the water resistance of the adhesive.
4. Microscopic morphology
The invention uses liquid nitrogen to cure the adhesive to form the adhesive layer for brittle fracture, and uses JSM-6460 scanning electron microscope to analyze the section.
5. Thermal stability:
according to the invention, the thermal stability analysis is carried out on the adhesive layer after the adhesive is cured through TGA.
The relevant performance tests of the examples and the comparative examples of the present invention are shown in the table, wherein the table 1 is a curing performance result table, the table 2 is a bonding performance result table, the table 3 is a water resistance result table, and the table 4 is a heat stability result table:
TABLE 1 Table of curing Performance results
The results of the tack-free time and anti-flow property tests of the examples and comparative examples are shown in Table 1.
According to the invention, curing performance tests are carried out, in comparative example 2 and comparative example 3, modified JQ-1 glue prepared by independently adding waste wood powder and hollow microspheres is shortened in surface drying time compared with unmodified JQ-1 glue of comparative example 1, and the two fillers can play roles in improving curing speed and improving anti-flowability, so that after the two fillers are compounded, the curing performance of the rapidly-operable modified JQ-1 glue prepared by using organic and inorganic wastes is superior to that of comparative example 1, wherein the surface drying time of examples 2 and 3 is shortened most obviously, and the surface drying time of the unmodified JQ-1 glue of comparative example 1 is shortened to 68 hours from 88 hours to about 20 hours; in addition, the flowing speed is reduced in the embodiment, namely, the flowing resistance is improved after the waste wood powder and the hollow microsphere are compounded and modified, the JQ-1 adhesive is increased, and the problem that the adhesive solution of the unmodified JQ-1 adhesive of the comparative example 1 is thinner is solved. The modified JQ-1 adhesive in the range has adjustability, can be freely selected according to the area of the adhered base material, and solves the problem that the adhesive solution is too high in viscosity and cannot fully contact with the adhered base material to fill the whole adhesive surface during large-area adhesion.
Table 2 adhesion property results table
The results of the adhesive property test of the examples and comparative examples are shown in Table 2.
According to the invention, the bonding performance test of metal-metal and metal-rubber is carried out, and the data comparison shows that the bonding performance of the rapidly-operable modified JQ-1 adhesive prepared by using organic and inorganic wastes is better than that of a comparative example, wherein the comprehensive bonding performance of the modified JQ-1 adhesive with the compounding ratio of 1:1 in the example 1 is optimal, and the tensile shear strength reaches 6.91N/mm during metal-metal bonding 2 The tensile shear strength of the metal-rubber adhesive is improved by about 1.39 times and reaches 1.37N/mm when the metal-rubber adhesive is bonded 2 The improvement is about 1.85 times.
Table 3 results of water resistance
The results of the water resistance tests of the examples and comparative examples are shown in Table 3.
According to the invention, the water resistance test is carried out, the water resistance of the adhesive is reflected by the saturated water absorption rate before and after the adhesive layer is immersed in water after being cured, and the smaller the saturated water absorption rate is, the more excellent the water resistance is. The water resistance of the adhesive prepared by the invention can be obviously improved by compounding the two fillers, and along with the increase of the soaking time, when the adhesive layer reaches the saturated water absorption, the water absorption of the JQ-1 adhesive compounded and modified by the waste wood powder in the embodiment and the hollow beads is smaller than that of the JQ-1 adhesive singly modified by the waste wood powder in the embodiment 2, and the water absorption of the adhesive which is close to or even smaller than that of the adhesive in the embodiment 1 and is not modified by the JQ-1 adhesive in the embodiment 1 can be improved by adding the hollow beads as the hollow beads which are used as inorganic fillers to improve the water resistance of the adhesive, and the water absorption of the adhesive which is prepared by compounding and modified by the organic and inorganic wastes is remarkably improved by the invention, and along with the increase of the soaking time, when the adhesive layer reaches the saturated water absorption, the water absorption of the JQ-1 adhesive which is smaller than that of the JQ-1 adhesive singly modified by the waste wood powder in the embodiment 2 and the water absorption of the adhesive which is not modified by the embodiment 1 is close to or even smaller than that of the adhesive in the embodiment 1. By combining the curing performance and the bonding performance of the adhesive, the JQ-1 adhesive prepared by the invention can be quickly operated and is compounded and modified by organic and inorganic wastes, has excellent comprehensive performance, and solves the problem that the adhesive has defects due to unilateral performance of single filler modification.
Table 4 results of thermal stability properties table
The invention performs thermal stability analysis, and thermal stability analysis data of the organic and inorganic waste compound modified JQ-1 glue layer which can be rapidly operated in example 1 are shown in Table 4. As shown by TG and DTG curves, in the initial decomposition stage, the decomposition temperature of the compound modified JQ-1 adhesive is 275.17 ℃ when the weight loss is 5%, and the decomposition temperature is improved by 21.06 ℃ compared with that of unmodified JQ-1 adhesive; the lower the decomposition rate is, the better the thermal stability is, compared with the decomposition rates of the two, when the temperature is raised to 1000 ℃, the decomposition rate of the modified JQ-1 glue prepared by the compound modification of the waste wood powder and the hollow microsphere in the example 1 is always smaller than that of the unmodified JQ-1 glue in the comparative example 1, which indicates that the compound modification does not damage the thermal stability of the adhesive, and the thermal stability is improved to a certain extent. Therefore, the JQ-1 adhesive which can be quickly operated and is modified by compounding organic and inorganic wastes improves the curing speed, improves the anti-flowing property, improves the curing property of the adhesive, and can improve the heat resistance of the adhesive layer and the heat stability.
The microscopic morphology analysis of the present invention is carried out, and as can be seen from the photographs of SEM, fig. 3 and 4: comparative example 1 the cross section of the cured gel layer was smooth and flat, and exhibited a typical brittle fracture. After being compounded and modified, the cross section of the cured adhesive layer is uneven, hollow microspheres are uniformly embedded in a JQ-1 adhesive matrix, wood powder fibers are pulled out, and the filler has good compatibility with the JQ-1 adhesive. The preparation method of the JQ-1 glue capable of being rapidly operated by utilizing organic and inorganic waste compound modification simplifies the pretreatment process of the filler, avoids introducing other components into the system, saves complex operation steps while solving the problems of long curing time, thin glue solution and the like of the JQ-1 glue, saves production time and reduces extra production cost.
The above-described embodiments are only preferred embodiments of the invention, and not all embodiments of the invention are possible. Any obvious modifications thereof, which would be apparent to those skilled in the art without departing from the principles and spirit of the present invention, should be considered to be included within the scope of the appended claims.
Claims (3)
1. The JQ-1 adhesive is prepared from filler and JQ-1 adhesive; the filler is a compound filler of waste wood powder and coal ash hollow microspheres; the mass of the filler accounts for 6% of the total mass of the adhesive; the mass of the waste wood powder accounts for 20% -80% of the total mass of the filler; the mass of the fly ash hollow microsphere accounts for 20% -80% of the total mass of the filler;
the preparation method of the JQ-1 glue which can be rapidly operated and is compounded and modified by utilizing organic and inorganic wastes comprises the following steps:
(1) Respectively weighing JQ-1 glue solution, waste wood powder and coal ash hollow microspheres;
(2) Mixing the waste wood powder and the hollow coal ash microspheres weighed in the step (1) according to different proportions to obtain a compound filler;
(3) Adding the compound filler obtained in the step (2) into the weighed JQ-1 glue solution, and stirring at 25 ℃ for at least 30min to obtain the compound modified JQ-1 glue.
2. The rapidly operable modified JQ-1 gum compounded by organic and inorganic waste according to claim 1, wherein the filler is a dry-to-constant weight filler.
3. The preparation method of the rapidly operable modified JQ-1 glue by using organic and inorganic waste compounds as claimed in any one of claims 1-2, which is characterized by comprising the following steps:
(1) Respectively weighing 94 parts of JQ-1 glue solution, 1.2-4.8 parts of waste wood powder and 1.2-4.8 parts of coal ash hollow microspheres;
(2) Mixing the waste wood powder and the hollow coal ash microspheres weighed in the step (1) according to different proportions to obtain a compound filler;
(3) Adding the compound filler obtained in the step (2) into the weighed JQ-1 glue solution, and stirring at 25 ℃ for at least 30min to obtain the compound modified JQ-1 glue.
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