CN109867955B - Spherical nano MoS2Hydroxyl silicate/bismaleimide resin composite material and preparation method thereof - Google Patents
Spherical nano MoS2Hydroxyl silicate/bismaleimide resin composite material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses spherical nano MoS2The hydroxyl silicate/bismaleimide resin composite material is prepared from the following raw materials in parts by weight: spherical nano MoS21-10 parts of/hydroxyl silicate composite particles, 100 parts of bismaleimide and 75-100 parts of allyl ether. The invention also discloses a preparation method of the composite material, which comprises the following steps: firstly, preparing spherical nano MoS2A/hydroxy silicate composite particle; then the spherical nano MoS is used2The/hydroxyl silicate composite particles are used as fillers to modify the allyl ether modified bismaleimide resin; finally, preparing the spherical nano MoS by adopting a casting forming method2A/hydroxy silicate/bismaleimide resin composite material. The composite material provided by the invention has excellent mechanical property and wear-resistant lubricating property, and the preparation method is simple and convenient to operate and low in cost.
Description
Technical Field
The invention belongs to the technical field of composite materials, and particularly relates to spherical nano MoS2A hydroxyl silicate/bismaleimide resin composite material and a preparation method thereof.
Background
The bismaleimide resin is a bifunctional compound taking maleimide as an active end group. Compared with epoxy resin, bismaleimide resin has better thermal stability, dimensional stability and fatigue resistance under high-humidity and high-heat environments, has good molecular structure design, and simultaneously has better radiation resistance, low-temperature resistance, forming process performance, flame resistance and electrical insulation, so that the bismaleimide resin-based composite material has wide application in the field of aviation, such as fuselage, pipeline, framework, wing, empennage and the like of an airplane. However, bismaleimide resin also has some defects, such as large brittleness of cured products, high volume shrinkage, poor flame retardant property, and the like, and is difficult to meet the application in the friction field under severe conditions, so that the bismaleimide resin needs to be modified in practical application. In recent years, researchers mainly focus on the modification of bismaleimide resins in terms of improving processing techniques and improving toughness of bismaleimide resins, and mainly include allyl compound modification, aromatic diamine modification, epoxy resin modification, cyanate resin modification, thermoplastic resin modification, thermosetting resin modification, and modification by adding inorganic fillers. In the modification method, the organic solvent is evaporated in the curing stage, so that the modified bismaleimide resin has poor compactness and poor wear-resistant lubricating performance. In order to improve the wear resistance of bismaleimide resins, researchers have attempted to modify bismaleimide resins with nanoparticles.
MoS2The nano particles have a special layered structure similar to a sandwich, S-Mo-S atoms in layers are connected by strong covalent bonds, and the layers are combined by Van der Waals force, so that the layers are easy to slide when external load is applied in the friction process, the capacity of bearing external force is increased to a greater extent, the actual relative friction area is greatly reduced, and good lubricating performance is expressed. However, the MoS of the layered structure2Since the electrons at the edge of the sheet layer have dangling bonds and thus have high chemical activity, the sheet layer is easily oxidized in a high-temperature and high-oxygen environment, and the sheet layer is unevenly dispersed in the bismaleimide resin, so that MoS cannot be exerted when the bismaleimide resin is modified2The wear resistance and the lubricating property of the lubricating oil.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide spherical nano MoS2A/hydroxyl silicate/bismaleimide resin composite material and a preparation method thereof, so that MoS is prepared2The stability of the resin is improved, and the resin can be well dispersed in a resin matrix, so that MoS is obtained2Can roll and elastically deform in the friction processAnd the spherical shell is peeled off, so that the mechanical property of the composite material is enhanced, and the capacity of bearing an external load in the friction process can be improved.
The first purpose of the invention is to provide spherical nano MoS2The hydroxyl silicate/bismaleimide resin composite material is prepared from the following raw materials in parts by weight: spherical nano MoS21-10 parts of/hydroxyl silicate composite particles, 100 parts of bismaleimide and 75-100 parts of allyl ether.
Preferably, the bismaleimide is a diphenylmethane bismaleimide.
The second purpose of the invention is to provide the spherical nano MoS2The preparation method of the/hydroxyl silicate/bismaleimide resin composite material comprises the following steps:
s1, adding sodium molybdate, ammonium thiourea, hydroxyl silicate, a silane coupling agent and hydrazine hydrate into a reaction container, adding deionized water and absolute ethyl alcohol, reacting at 190 ℃ for 24 hours, cooling, washing and drying after the reaction is finished to obtain a reaction product, calcining the reaction product at 500-800 ℃ for 1-2 hours in a nitrogen atmosphere to obtain spherical nano MoS2A/hydroxy silicate composite particle; wherein the molar ratio of the sodium molybdate to the ammonium thiourea is 1:2, and the mass ratio of the sodium molybdate to the hydroxyl silicate to the silane coupling agent is 3:1: 1;
s2, weighing spherical nano MoS according to parts by weight21-10 parts of/hydroxyl silicate composite particles, 100 parts of bismaleimide and 75-100 parts of allyl ether for later use;
s3, mixing bismaleimide weighed in S2 and allyl ether, pre-polymerizing for 10-15 min at 120-140 ℃, and then adding spherical nano MoS weighed in S22Performing ultrasonic dispersion on the/hydroxyl silicate composite particles for 20-30 min under the power of 50-70W to obtain a prepolymer;
s4, heating and melting the prepolymer obtained in the step S3 at 120-140 ℃, prepolymerizing for 10-15 min, pouring into a preheated mold, vacuum drying the mold at 100-140 ℃, then carrying out staged heating solidification, naturally cooling and demolding after solidification is finished,then treating for 1-2 h at 220-250 ℃ to obtain spherical nano MoS2A/hydroxy silicate/bismaleimide resin composite material.
Preferably, in step S1, the hydroxy silicate is serpentine having a layered structure.
Preferably, in step S1, the silane coupling agent is N- (. beta. -aminoethyl) - γ -aminopropyltrimethoxysilane (KH-792).
Preferably, in step S1, the volume ratio of the deionized water to the absolute ethyl alcohol to the hydrazine hydrate is 6:6: 1.
Preferably, in step S1, the ratio of the hydroxy silicate to the hydrazine hydrate is 1g:5 mL.
Preferably, in the step S4, the step of temperature-rising curing is specifically divided into three steps, the curing time of each step is 2 hours, the temperature of the first step of temperature-rising curing is 160-180 ℃, the temperature of the second step of temperature-rising curing is 180-200 ℃, and the temperature of the third step of temperature-rising curing is 200-220 ℃.
Compared with the prior art, the invention has the beneficial effects that:
(1) the spherical nano MoS prepared by the invention2The nano MoS has a series of traditional advantages, and the special spherical structure endows the nano MoS with high chemical stability, and when the nano MoS is subjected to a large external load in the friction process, rolling, elastic deformation and spherical shell peeling can be generated, so that the nano MoS is realized2The lubricating property is greatly optimized, the friction coefficient of the bismaleimide resin is reduced, and the wear resistance of the composite material is further improved;
(2) the hydroxyl silicate adopted by the invention has a special layered structure, so that the external force bearing capacity of the hydroxyl silicate can be increased to a greater extent, and the actual relative friction area can be greatly reduced, so that the aims of reducing the wear resistance and the loss of the material and prolonging the service life of parts are fulfilled. Furthermore, the addition of the hydroxysilicate can be spherical MoS2Providing nucleation sites for the production of MoS2Is smaller and looser in size and is favorable for MoS2Forming a closed spherical structure.
(3) The invention adoptsThe silane coupling agent KH-792 can be used as a promoter to some extent for spherical MoS in the reaction process2Can be regulated and controlled, and a small amount of KH-792 can be matched with spherical MoS2The surface hydroxyl group reacts, which is more beneficial to the spherical nano MoS2Dispersibility of the hydroxy silicate in the resin matrix. Therefore, KH-792 is used as an auxiliary promoter to prepare the spherical nano MoS2The hydroxyl silicate composite particles are used for modifying bismaleimide resin, so that the bismaleimide resin and the hydroxyl silicate composite particles can exert good synergistic effect, and the mechanical property and the friction property of the resin material are greatly improved.
(4) The invention selects allyl ether to modify bismaleimide to obtain prepolymer with lower viscosity, and spherical nano MoS can be prepared without adding other solvents2The hydroxyl silicate composite particles are uniformly and well dispersed in the resin, so that the porous defect caused by solvent evaporation is avoided, and the formed spherical nano MoS2The/hydroxyl silicate/bismaleimide resin composite material is compact and uniform.
(5) Spherical nano MoS prepared by the invention2The method is directly synthesized by a one-step hydration thermal method, the operation process is simple and convenient, the used raw materials are sodium molybdate and ammonium thiourea, the source is wide, and the cost is low.
Drawings
FIG. 1 shows a spherical nano-MoS prepared in example 1 of the present invention2Scanning electron micrographs of the/hydroxy silicate composite particles;
FIG. 2 is a diagram of a spherical MoS prepared in example 1 of the present invention2SEM image of fracture surface of/hydroxyl silicate/bismaleimide resin composite material;
FIG. 3 is a scanning electron micrograph of a hydroxystillicate in example 1 of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood and implemented by those skilled in the art, the present invention is further described with reference to the following drawings and specific embodiments, but the embodiments are not to be construed as limiting the present invention. The test methods not specifically described in the following examples were carried out according to conventional methods and conditions in the art, and the starting materials were commercially available.
The bismaleimide in the following examples is diphenylmethane bismaleimide, the hydroxy silicate is serpentine with a layered structure, and the silane coupling agent is KH-792.
Example 1
Spherical nano MoS2The hydroxyl silicate/bismaleimide resin composite material is prepared from the following raw materials in parts by weight: spherical nano MoS21 part of/hydroxyl silicate composite particles, 100 parts of bismaleimide and 75 parts of allyl ether.
The spherical nano MoS2The preparation method of the/hydroxyl silicate/bismaleimide resin composite material specifically comprises the following steps:
s1, adding 2.1g of sodium molybdate, 1.8g of ammonium thiosemicarbazide, 0.7g of hydroxyl silicate, 0.7g of silane coupling agent and 3.3mL of hydrazine hydrate into an autoclave with a polytetrafluoroethylene substrate, then adding 20mL of deionized water and 20mL of anhydrous ethanol, uniformly stirring, sealing, then placing into an oven to react for 24 hours at 190 ℃, after the reaction is finished, cooling, washing and drying to obtain a reaction product, calcining the reaction product for 2 hours at 500 ℃ in a nitrogen atmosphere to obtain spherical nano MoS2A/hydroxy silicate composite particle;
s2, weighing spherical nano MoS according to parts by weight21 part of/hydroxyl silicate composite particles, 100 parts of diphenylmethane bismaleimide and 75 parts of allyl ether for later use;
s3, mixing bismaleimide weighed in S2 and allyl ether, pre-polymerizing for 10min at 140 ℃, and then adding spherical nano MoS weighed in S22Performing ultrasonic dispersion on the/hydroxyl silicate composite particles for 20min under the power of 50W to obtain a prepolymer;
s4, heating and melting the prepolymer obtained in the step S3 at 140 ℃, pre-polymerizing for 10min, pouring the prepolymer into a preheated mold, placing the mold in a vacuum drying oven, vacuumizing at 100 ℃ to remove bubbles, transferring the mold into an air-blowing drying oven to perform stage heating solidification, wherein the stage heating solidification is specifically divided into three stages, and each stage is solidifiedThe time is 2 hours, the temperature for the first stage of heating and curing is 180 ℃, the temperature for the second stage of heating and curing is 200 ℃, and the temperature for the third stage of heating and curing is 220 ℃. Naturally cooling and demoulding after solidification, and then treating for 2 hours at 250 ℃ to obtain the spherical nano MoS2A/hydroxy silicate/bismaleimide resin composite material.
Example 2
Spherical nano MoS2The hydroxyl silicate/bismaleimide resin composite material is prepared from the following raw materials in parts by weight: spherical nano MoS22 parts of/hydroxyl silicate composite particles, 100 parts of bismaleimide and 75 parts of allyl ether.
The spherical nano MoS2The preparation method of the/hydroxyl silicate/bismaleimide resin composite material specifically comprises the following steps:
s1, adding 2.1g of sodium molybdate, 1.8g of ammonium thiosemicarbazide, 0.7g of hydroxyl silicate, 0.7g of silane coupling agent and 3.3mL of hydrazine hydrate into an autoclave with a polytetrafluoroethylene substrate, then adding 20mL of deionized water and 20mL of anhydrous ethanol, uniformly stirring, sealing, then placing into an oven to react for 24 hours at 190 ℃, after the reaction is finished, cooling, washing and drying to obtain a reaction product, calcining the reaction product for 2 hours at 700 ℃ in a nitrogen atmosphere to obtain spherical nano MoS2A/hydroxy silicate composite particle;
s2, weighing spherical nano MoS according to parts by weight22 parts of/hydroxyl silicate composite particles, 100 parts of diphenylmethane bismaleimide and 75 parts of allyl ether for later use;
s3, mixing bismaleimide weighed in S2 and allyl ether, pre-polymerizing for 15min at 120 ℃, and then adding spherical nano MoS weighed in S22Performing ultrasonic dispersion on the/hydroxyl silicate composite particles for 20min under the power of 70W to obtain a prepolymer;
s4, heating and melting the prepolymer obtained in the step S3 at 120 ℃, prepolymerizing for 15min, pouring the prepolymer into a preheated mold, placing the mold into a vacuum drying oven, vacuumizing at 140 ℃ to remove bubbles, transferring into a forced air drying oven to perform staged temperature rise solidification, and stagingThe section heating and curing is divided into three stages, the curing time of each stage is 2 hours, the temperature of the first stage heating and curing is 160 ℃, the temperature of the second stage heating and curing is 180 ℃, and the temperature of the third stage heating and curing is 200 ℃. After solidification, naturally cooling and demoulding, and then treating at 220 ℃ for 2h to obtain the spherical nano MoS2A/hydroxy silicate/bismaleimide resin composite material.
Example 3
Spherical nano MoS2The hydroxyl silicate/bismaleimide resin composite material is prepared from the following raw materials in parts by weight: spherical nano MoS22 parts of/hydroxyl silicate composite particles, 100 parts of bismaleimide and 85 parts of allyl ether.
The spherical nano MoS2The preparation method of the/hydroxyl silicate/bismaleimide resin composite material specifically comprises the following steps:
s1, adding 2.1g of sodium molybdate, 1.8g of ammonium thiosemicarbazide, 0.7g of hydroxyl silicate, 0.7g of silane coupling agent and 3.3mL of hydrazine hydrate into an autoclave with a polytetrafluoroethylene substrate, then adding 20mL of deionized water and 20mL of anhydrous ethanol, uniformly stirring, sealing, then placing into an oven to react for 24 hours at 190 ℃, after the reaction is finished, cooling, washing and drying to obtain a reaction product, calcining the reaction product for 1 hour at 700 ℃ in a nitrogen atmosphere to obtain spherical nano MoS2A/hydroxy silicate composite particle;
s2, weighing spherical nano MoS according to parts by weight22 parts of/hydroxyl silicate composite particles, 100 parts of diphenylmethane bismaleimide and 85 parts of allyl ether for later use;
s3, mixing bismaleimide weighed in S2 and allyl ether, pre-polymerizing for 10min at 130 ℃, and then adding spherical nano MoS weighed in S22Performing ultrasonic dispersion on the/hydroxyl silicate composite particles for 30min under the power of 60W to obtain a prepolymer;
s4, heating and melting the prepolymer obtained in the step S3 at 140 ℃, pre-polymerizing for 10min, pouring the prepolymer into a preheated mold, placing the mold into a vacuum drying oven, and vacuumizing at 130 ℃ to remove bubblesAnd then transferring the mixture into a blast drying oven to carry out stage heating and curing, wherein the stage heating and curing is specifically divided into three stages, the curing time of each stage is 2 hours, the temperature for the first stage heating and curing is 170 ℃, the temperature for the second stage heating and curing is 200 ℃, and the temperature for the third stage heating and curing is 220 ℃. Naturally cooling and demoulding after solidification, and then treating for 2 hours at 250 ℃ to obtain the spherical nano MoS2A/hydroxy silicate/bismaleimide resin composite material.
Example 4
Spherical nano MoS2The hydroxyl silicate/bismaleimide resin composite material is prepared from the following raw materials in parts by weight: spherical nano MoS23 parts of/hydroxyl silicate composite particles, 100 parts of bismaleimide and 85 parts of allyl ether.
The spherical nano MoS2The preparation method of the/hydroxyl silicate/bismaleimide resin composite material is the same as the example 1, and only the difference is that the raw material component in the S2 is spherical nano MoS23 parts of/hydroxyl silicate composite particles, 100 parts of bismaleimide and 85 parts of allyl ether.
Example 5
Spherical nano MoS2The hydroxyl silicate/bismaleimide resin composite material is prepared from the following raw materials in parts by weight: spherical nano MoS23 parts of/hydroxyl silicate composite particles, 100 parts of bismaleimide and 100 parts of allyl ether.
The spherical nano MoS2A method for preparing a/hydroxystilicate/bismaleimide resin composite material is the same as that of example 1, except that the calcination temperature and time in S1 are 800 ℃ and 1h, and the raw material component is spherical nano MoS in S223 parts of/hydroxyl silicate composite particles, 100 parts of bismaleimide and 100 parts of allyl ether.
Example 6
Spherical nano MoS2The hydroxyl silicate/bismaleimide resin composite material is prepared from the following raw materials in parts by weight: spherical nano MoS2Hydroxyl silicate composite particle4 parts of bismaleimide, 100 parts of bismaleimide and 75 parts of allyl ether.
The spherical nano MoS2The preparation method of the/hydroxyl silicate/bismaleimide resin composite material is the same as the example 1, and only the difference is that the raw material component in the S2 is spherical nano MoS24 parts of/hydroxyl silicate composite particles, 100 parts of bismaleimide and 75 parts of allyl ether.
Example 7
Spherical nano MoS2The hydroxyl silicate/bismaleimide resin composite material is prepared from the following raw materials in parts by weight: spherical nano MoS25 parts of/hydroxyl silicate composite particles, 100 parts of bismaleimide and 80 parts of allyl ether.
The spherical nano MoS2The preparation method of the/hydroxyl silicate/bismaleimide resin composite material is the same as the example 1, and only the difference is that the raw material component in the S2 is spherical nano MoS25 parts of/hydroxyl silicate composite particles, 100 parts of bismaleimide and 80 parts of allyl ether.
Example 8
Spherical nano MoS2The hydroxyl silicate/bismaleimide resin composite material is prepared from the following raw materials in parts by weight: spherical nano MoS210 parts of/hydroxyl silicate composite particles, 100 parts of bismaleimide and 75 parts of allyl ether.
The spherical nano MoS2The preparation method of the/hydroxyl silicate/bismaleimide resin composite material is the same as the example 1, and only the difference is that the raw material component in the S2 is spherical nano MoS210 parts of/hydroxyl silicate composite particles, 100 parts of bismaleimide and 75 parts of allyl ether.
To further study the prepared spherical nano MoS2The performance of the/hydroxyl silicate/bismaleimide resin composite material is shown by taking the composite material prepared in example 1 as an example, and the morphology and the mechanical property are researched
FIG. 1 shows the nano-MoS-like particles prepared in step S1 of example 1 of the present invention2A scanning electron microscope picture of the/hydroxyl silicate composite particle,as can be seen from FIG. 1, the addition of the hydroxystillicates can be spherical MoS2Providing nucleation sites for the production of MoS2Is smaller in size and is favorable for MoS2MoS prepared by forming closed spherical structure2The size of the/hydroxyl silicate composite particle is 2-8 um, the apparent appearance is fluffy, and the method provides a basis for the dispersion of the bismaleimide resin matrix, namely is beneficial to the dispersion of the bismaleimide resin matrix.
FIG. 2 is a diagram of a spherical MoS prepared in example 1 of the present invention2SEM image of the fracture surface of the/hydroxyl silicate/bismaleimide resin composite material shows that the fracture surface has more dimples, a small amount of white extractives can be observed from the SEM image shown in FIG. 2, and the characteristic of typical ductile fracture is that the prepared composite material has good toughness.
Fig. 3 is a scanning electron microscope image of the hydroxy silicate in example 1 of the present invention, and it can be seen from fig. 3 that the hydroxy silicate has a special layered structure, so that on one hand, the ability of the hydroxy silicate to bear external force can be increased to a greater extent, and on the other hand, the actual relative friction area can be greatly reduced, so as to achieve the purposes of reducing the wear resistance and the loss of the material, and prolonging the service life of the component.
For the spherical nano MoS prepared in the embodiment 1 of the invention2The mechanical property test of the/hydroxyl silicate/bismaleimide resin composite material is carried out, and the result is as follows:
bending strength 132 MPa; impact strength 13kJ/m2(ii) a Coefficient of friction 0.39; volumetric wear rate of 7.2X 10-6mm3/(N·m)。
Therefore, the spherical nano MoS prepared by the invention2The/hydroxyl silicate/bismaleimide resin composite material has excellent mechanical property and wear-resisting lubricating property.
In conclusion, the invention adopts the allyl ether modified bismaleimide as the matrix and adopts the self-made spherical nano MoS2The/hydroxyl silicate composite particles are used as fillers and are in spherical nano MoS2In the preparation process of the hydroxyl silicate nano composite particles, a silane coupling agent KH-792 is added as an assistant, so that the hydroxyl silicate nano composite particles can be prepared in the presence of the assistantCertain degree of spherical MoS2The size of the nano particles can be regulated and controlled, and spherical nano MoS can be obtained2Combined with the advantages of the hydroxyl silicate with a layered structure, the spherical nano MoS2And hydroxyl silicate exerts good synergistic effect in resin materials, and the mechanical property and the wear-resistant lubricating property of the bismaleimide resin are greatly enhanced.
It should be noted that when the following claims refer to numerical ranges, it should be understood that two endpoints of each numerical range and any numerical value between the two endpoints can be selected, and since the steps and methods adopted are the same as those in embodiments 1 to 8, the present invention describes preferred embodiments in order to prevent redundant description, but once a person skilled in the art knows the basic inventive concept, other changes and modifications can be made to these embodiments. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. Spherical nano MoS2The hydroxyl silicate/bismaleimide resin composite material is characterized by being prepared from the following raw materials in parts by weight: spherical nano MoS21-10 parts of/hydroxyl silicate composite particles, 100 parts of bismaleimide and 75-100 parts of allyl ether;
the spherical nano MoS2The preparation method of the/hydroxyl silicate/bismaleimide resin composite material comprises the following steps:
s1, adding sodium molybdate, thiosemicarbazide, hydroxyl silicate, silane coupling agent and hydrazine hydrate into a reaction vessel, then adding deionized water and absolute ethyl alcohol, then reacting for 24 hours at 190 ℃, cooling, washing and drying after the reaction is finished to obtain a reaction product, and reactingCalcining the reaction product at 500-800 ℃ for 1-2 h in nitrogen atmosphere to obtain spherical nano MoS2A/hydroxy silicate composite particle; the molar ratio of the sodium molybdate to the thiosemicarbazide is 1:2, and the mass ratio of the sodium molybdate to the hydroxy silicate to the silane coupling agent is 3:1:1, wherein the silane coupling agent is N- (beta-aminoethyl) -gamma-aminopropyltrimethoxysilane;
s2, weighing spherical nano MoS according to parts by weight21-10 parts of/hydroxyl silicate composite particles, 100 parts of bismaleimide and 75-100 parts of allyl ether for later use;
s3, mixing bismaleimide weighed in S2 and allyl ether, pre-polymerizing for 10-15 min at 120-140 ℃, and then adding spherical nano MoS weighed in S22Performing ultrasonic dispersion on the/hydroxyl silicate composite particles for 20-30 min under the power of 50-70W to obtain a prepolymer;
s4, heating and melting the prepolymer obtained in the step S3 at 120-140 ℃, prepolymerizing for 10-15 min, pouring the prepolymer into a preheated mold, drying the mold at 100-140 ℃ in vacuum, carrying out staged heating solidification, naturally cooling and demolding after solidification, and treating at 220-250 ℃ for 1-2 h to obtain the spherical nano MoS2A/hydroxy silicate/bismaleimide resin composite material.
2. The spherical nanomos of claim 12The/hydroxyl silicate/bismaleimide resin composite material is characterized in that the bismaleimide is diphenylmethane bismaleimide.
3. The spherical nanomos of claim 12The hydroxyl silicate/bismaleimide resin composite material is characterized in that in step S1, the hydroxyl silicate is serpentine having a layered structure.
4. The spherical nanomos of claim 12The/hydroxyl silicate/bismaleimide resin composite material is characterized in that in the step S1, the deionized water, the absolute ethyl alcohol and the waterThe volume ratio of hydrazine hydrate is 6:6: 1.
5. The spherical nanomos of claim 12The/hydroxyl silicate/bismaleimide resin composite material is characterized in that in the step S1, the dosage ratio of the hydroxyl silicate to the hydrazine hydrate is 1g:5 mL.
6. The spherical nanomos of claim 12The/hydroxyl silicate/bismaleimide resin composite material is characterized in that in the step S4, the stage heating and curing is specifically divided into three stages, wherein the curing time of each stage is 2 hours, the temperature of the first stage heating and curing is 160-180 ℃, the temperature of the second stage heating and curing is 180-200 ℃, and the temperature of the third stage heating and curing is 200-220 ℃.
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| CN103881379A (en) * | 2014-03-20 | 2014-06-25 | 西北工业大学 | Hydroxyl silicate/phosphorus-containing benzoxazine/bismaleimide resin composite material and preparation method thereof |
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| CN108795041A (en) * | 2018-05-07 | 2018-11-13 | 西安文理学院 | A kind of nanometer of MoS2/ carbon nanotube/bismaleimide resin composite material and preparation method |
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| CN103881379A (en) * | 2014-03-20 | 2014-06-25 | 西北工业大学 | Hydroxyl silicate/phosphorus-containing benzoxazine/bismaleimide resin composite material and preparation method thereof |
| CN105086528A (en) * | 2015-07-02 | 2015-11-25 | 北京交通大学 | Adhesive solid lubricating coating and preparation method therefor |
| CN108795041A (en) * | 2018-05-07 | 2018-11-13 | 西安文理学院 | A kind of nanometer of MoS2/ carbon nanotube/bismaleimide resin composite material and preparation method |
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