CN111925618A - Inorganic composite material doped resin material with enhanced mechanical property - Google Patents
Inorganic composite material doped resin material with enhanced mechanical property Download PDFInfo
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- CN111925618A CN111925618A CN201911374142.3A CN201911374142A CN111925618A CN 111925618 A CN111925618 A CN 111925618A CN 201911374142 A CN201911374142 A CN 201911374142A CN 111925618 A CN111925618 A CN 111925618A
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Abstract
The invention discloses an inorganic composite material doped resin material with enhanced mechanical properties, which is obtained by adding an inorganic additive material into acrylic acid mother liquor by an in-situ suspension polymerization method for polymerization, wherein the inorganic additive material is one or more of boron nitride, magnesium-aluminum hydrotalcite and magnesium-aluminum hydrotalcite @ boron nitride. By means of the inorganic additive and the addition optimization in the polyacrylic resin and the investigation on the mechanical performance (the ball rate after grinding), the obtained novel polyacrylic resin has obviously improved mechanical performance, and the ball rate after grinding is improved from 43.76% to 95.69%, which is increased by 118.62%. Aiming at the problems of weak mechanical strength of polyacrylic resin materials and resin loss and secondary pollution caused by easy breakage in the using process, the invention provides a solution, and the novel resin material with obviously enhanced mechanical property is prepared by compounding inorganic material additives.
Description
Technical Field
The invention relates to the technical field related to high polymer materials, in particular to an inorganic composite material doped resin material with enhanced mechanical properties.
Background
The synthetic resin is considered as an ideal adsorption medium for treating organic matters by an adsorption method due to the functionalized groups and the specific pore channel structure. The resin may be classified into polystyrene resin, polyacrylic resin, phenol resin, and the like, depending on the chemical structure of the resin. Among them, polyacrylic resin is most widely used because of its advantages of stable properties, mature production process, and large yield. Compared with the traditional resin, the polyacrylic resin has smaller particle size and larger adsorption kinetic parameters, and is beneficial to accelerating the adsorption rate in the water treatment process; in addition, the resin can regulate and control the pore size and structural characteristics of the material by changing the raw material proportion, optimizing the operation conditions and other means, so that the targeted design can be carried out on organic matters with different chemical structures, which is advantageous in the actual production, and the polyacrylic resin is a porous polymer resin material which takes acrylic substances as monomers (such as methyl acrylate, methyl methacrylate and the like) and is subjected to induced crosslinking with a multifunctional crosslinking agent in the presence of a pore-making agent, a dispersing agent and the like without functional grouping, and has a great proportion in the field of the current resin research and production.
However, in practical application, it is found that when the resin is filled in the fixed bed, particles are easily broken due to friction generated between the particles and impact of a water body, and fine resin particles enter the treated water body, so that secondary water body pollution is easily caused. Therefore, it is of great significance to modify polyacrylic resin to enhance the mechanical properties of the polyacrylic resin.
Disclosure of Invention
The invention aims to provide an inorganic composite material doped resin material with enhanced mechanical property, which solves the problems of resin loss and secondary pollution caused by weak mechanical strength and easy breakage in the using process of the existing polyacrylic resin in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an inorganic composite material-doped resin material with enhanced mechanical properties is obtained by adding an inorganic additive material into acrylic acid mother liquor by an in-situ suspension polymerization method for polymerization, wherein the modified material is one of boron nitride, magnesium-aluminum hydrotalcite and magnesium-aluminum hydrotalcite @ boron nitride.
Preferably, the modified material is boron nitride, and the mass fraction is 0.001 wt% -0.6 wt%.
Preferably, the modified material is magnesium aluminum hydrotalcite with the mass fraction of 0.1 wt% -3 wt%.
Preferably, the modified material is 0.05 wt% -5 wt% of the magnesium-aluminum hydrotalcite @ boron nitride composite material, wherein the boron nitride accounts for 0.1 wt% -10 wt% of the magnesium-aluminum hydrotalcite @ boron nitride composite material.
The invention provides an inorganic composite material doped resin material with enhanced mechanical properties, which has the following beneficial effects:
the novel inorganic material is added into the polyacrylic resin, and the modified polyacrylic resin is synthesized by an in-situ doping and suspension polymerization method, wherein the novel inorganic material is formed by one of boron nitride, magnesium-aluminum hydrotalcite and magnesium-aluminum hydrotalcite @ boron nitride, so that the aim of improving the mechanical property of the resin is fulfilled; the magnesium-aluminum hydrotalcite and boron nitride composite modified material effectively reduces the occurrence of the phenomenon of internal fracture of the composite material caused by agglomeration of the added materials due to the introduction of a hydrotalcite structure; the addition of boron nitride is obviously reduced, so that the cost of the material is obviously reduced; the interaction between the hydrotalcite and the boron nitride further improves the mechanical property of the material, and the sphericity of the ground material is improved from 43.76% to 95.69%.
Drawings
FIG. 1 shows the mechanical properties (sphericity after grinding) of 5 resin samples before and after modification
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1:
an inorganic composite material doped resin material with enhanced mechanical property is obtained by adding an inorganic additive material into acrylic acid mother liquor for polymerization by adopting an in-situ suspension polymerization method;
wherein the modified material is boron nitride.
Putting monomer methyl acrylate into a 500ml three-neck flask A, sequentially adding a cross-linking agent divinylbenzene (with the cross-linking degree of 8%), an initiator benzoyl peroxide (accounting for 1 percent of the total amount of the monomers) and a modified material (accounting for 0.5 percent of the total amount of the monomers), and stirring and mixing uniformly at room temperature to obtain an oil phase;
adding gelatin with the mass fraction of 1 wt% into deionized water, placing the mixture into a 500ml three-neck flask B, stirring and heating to 80 ℃, keeping stirring until the mixture is uniform (30 minutes), stopping heating, dissolving the mixture by using sodium chloride (with the amount of 15 wt%) added at the rest temperature, and cooling the prepared water phase solution to room temperature to obtain a water phase;
after the stirring of the oil phase is stopped, adding the water phase with 4 times of the total mass of the oil phase into the oil phase, standing for a few minutes to mix the oil phase and the water phase, then stirring at the rotating speed of 400rpm of 300-. Washing the reacted solid product with deionized water, filtering for 6-8 times to remove unreacted monomers, naturally drying in air, putting into a 60 ℃ oven, and drying to obtain the sample of example 1: boron nitride-polyacrylic resin composite (0.5% BN/PMA).
Example 2:
an inorganic composite material doped resin material with enhanced mechanical property is obtained by adding an inorganic additive material into acrylic acid mother liquor for polymerization by adopting an in-situ suspension polymerization method;
wherein the modified material is magnesium aluminum hydrotalcite.
Preparing magnesium-aluminum hydrotalcite (MgAl-LDH) by a precipitation method;
step 1: dissolving a proper amount of magnesium nitrate and aluminum nitrate in deionized water to form a metal ion solution A;
step 2: weighing a proper amount of sodium hydroxide and anhydrous sodium carbonate to prepare a sodium hydroxide-sodium carbonate mixed solution B;
and step 3: dropwise adding the solution B into the solution A under the condition of strong stirring until the pH value of a reaction system is 10.0;
and 4, step 4: aging the obtained suspension for 24h under the condition of water bath at 60 ℃;
and 5: filtering and washing the aged suspension, and drying in an oven at 60 ℃ overnight to obtain magnesium-aluminum hydrotalcite (MgAl-LDH for short);
preparing a magnesium aluminum hydrotalcite-polyacrylic resin composite material by a suspension polymerization method;
putting monomer methyl acrylate into a 500ml three-neck flask A, sequentially adding a cross-linking agent divinylbenzene (with the cross-linking degree of 8%), an initiator benzoyl peroxide (accounting for 1 percent of the total amount of the monomers) and a modified material (accounting for 1 percent of the total amount of the monomers), and stirring and mixing uniformly at room temperature to obtain an oil phase;
adding gelatin with the mass fraction of 1 wt% into deionized water, placing the mixture into a 500ml three-neck flask B, stirring and heating to 80 ℃, keeping stirring until the mixture is uniform (30 minutes), stopping heating, dissolving the mixture by using sodium chloride (with the amount of 15 wt%) added at the rest temperature, and cooling the prepared water phase solution to room temperature to obtain a water phase;
after the stirring of the oil phase is stopped, adding the water phase with 4 times of the total mass of the oil phase into the oil phase, standing for a few minutes to mix the oil phase and the water phase, then stirring at the rotating speed of 400rpm of 300-. Washing the reacted solid product with deionized water, filtering for 6-8 times to remove unreacted monomers, naturally drying in air, putting into a 60 ℃ oven, and drying to obtain the sample of the embodiment 2: magnesium aluminum hydrotalcite-polyacrylic resin composite material (1% MgAl-LDH/PMA).
Example 3:
an inorganic composite material doped resin material with enhanced mechanical property is obtained by adding an inorganic additive material into acrylic acid mother liquor for polymerization by adopting an in-situ suspension polymerization method;
wherein the modified material is a composite material of magnesium-aluminum hydrotalcite and boron nitride (the mass of the boron nitride accounts for 1 percent of the composite material).
Preparing a magnesium-aluminum hydrotalcite and boron nitride composite material (MgAl-LDH @ 1% BN) by a precipitation method;
step 1: dissolving a proper amount of magnesium nitrate and aluminum nitrate in deionized water to form a metal ion solution A;
step 2: then adding a proper amount of boron nitride into the solution A, and mixing the boron nitride with the solution A by using ultrasonic waves to ensure uniform mixing so that the boron nitride is uniformly dispersed in the metal ion solution;
and step 3: weighing a proper amount of sodium hydroxide and anhydrous sodium carbonate to prepare a sodium hydroxide-sodium carbonate mixed solution B;
and 4, step 4: dropwise adding the solution B into the solution A under the condition of strong stirring until the pH value of a reaction system is 10.0;
and 5: aging the obtained suspension for 24h under the condition of water bath at 60 ℃;
step 6: filtering and washing the aged suspension, and drying in an oven at 60 ℃ overnight to obtain magnesium-aluminum hydrotalcite @ boron nitride (MgAl-LDH @ 1% BN for short);
preparing the magnesium aluminum hydrotalcite @ boron nitride-polyacrylic resin composite material by a suspension polymerization method;
putting monomer methyl acrylate into a 500ml three-neck flask A, sequentially adding a cross-linking agent divinylbenzene (with the cross-linking degree of 8%), an initiator benzoyl peroxide (accounting for 1 percent of the total amount of the monomers) and a modified material (accounting for 1 percent of the total amount of the monomers), and stirring and mixing uniformly at room temperature to obtain an oil phase;
adding gelatin with the mass fraction of 1 wt% into deionized water, placing the mixture into a 500ml three-neck flask B, stirring and heating to 80 ℃, keeping stirring until the mixture is uniform (30 minutes), stopping heating, dissolving the mixture by using sodium chloride (with the amount of 15 wt%) added at the rest temperature, and cooling the prepared water phase solution to room temperature to obtain a water phase;
after the stirring of the oil phase is stopped, adding the water phase with 4 times of the total mass of the oil phase into the oil phase, standing for a few minutes to mix the oil phase and the water phase, then stirring at the rotating speed of 400rpm of 300-. Washing the reacted solid product with deionized water, filtering for 6-8 times to remove unreacted monomers, naturally drying in air, putting into a 60 ℃ oven, and drying to obtain the sample of the embodiment 3: magnesium aluminum hydrotalcite @ boron nitride-polyacrylic resin composite material (1% MgAl-LDH @ 1% BN/PMA for short).
Example 4:
the modified material is a composite material of magnesium-aluminum hydrotalcite and boron nitride (the mass of the boron nitride accounts for 2 percent of the composite material);
preparing a magnesium-aluminum hydrotalcite and boron nitride composite material (MgAl-LDH @ 2% BN) by a precipitation method;
step 1: dissolving a proper amount of magnesium nitrate and aluminum nitrate in deionized water to form a metal ion solution A;
step 2: then adding a proper amount of boron nitride into the solution A, and mixing the boron nitride with the solution A by using ultrasonic waves to ensure uniform mixing so that the boron nitride is uniformly dispersed in the metal ion solution;
and step 3: weighing a proper amount of sodium hydroxide and anhydrous sodium carbonate to prepare a sodium hydroxide-sodium carbonate mixed solution B;
and 4, step 4: dropwise adding the solution B into the solution A under the condition of strong stirring until the pH value of a reaction system is 10.0;
and 5: aging the obtained suspension for 24h under the condition of water bath at 60 ℃;
step 6: filtering and washing the aged suspension, and drying in an oven at 60 ℃ overnight to obtain magnesium-aluminum hydrotalcite @ boron nitride (MgAl-LDH @ 2% BN for short);
preparing the magnesium aluminum hydrotalcite @ boron nitride-polyacrylic resin composite material by a suspension polymerization method;
putting monomer methyl acrylate into a 500ml three-neck flask A, sequentially adding a cross-linking agent divinylbenzene (with the cross-linking degree of 8%), an initiator benzoyl peroxide (accounting for 1 percent of the total amount of the monomers) and a modified material (accounting for 1 percent of the total amount of the monomers), and stirring and mixing uniformly at room temperature to obtain an oil phase;
adding gelatin with the mass fraction of 1 wt% into deionized water, placing the mixture into a 500ml three-neck flask B, stirring and heating to 80 ℃, keeping stirring until the mixture is uniform (30 minutes), stopping heating, dissolving the mixture by using sodium chloride (with the amount of 15 wt%) added at the rest temperature, and cooling the prepared water phase solution to room temperature to obtain a water phase;
after the stirring of the oil phase is stopped, adding the water phase with 4 times of the total mass of the oil phase into the oil phase, standing for a few minutes to mix the oil phase and the water phase, then stirring at the rotating speed of 400rpm of 300-. Washing the reacted solid product with deionized water, filtering for 6-8 times to remove unreacted monomers, naturally drying in air, putting into a 60 ℃ oven, and drying to obtain the sample of the embodiment 4: magnesium aluminum hydrotalcite @ boron nitride-polyacrylic resin composite material (1% MgAl-LDH @ 2% BN/PMA for short).
Example 5:
the modified material is a composite material of magnesium-aluminum hydrotalcite and boron nitride (the mass of the boron nitride accounts for 5 percent of the composite material);
preparing a magnesium-aluminum hydrotalcite and boron nitride composite material (MgAl-LDH @ 5% BN) by a precipitation method;
step 1: dissolving a proper amount of magnesium nitrate and aluminum nitrate in deionized water to form a metal ion solution A;
step 2: then adding a proper amount of boron nitride into the solution A, and mixing the boron nitride with the solution A by using ultrasonic waves to ensure uniform mixing so that the boron nitride is uniformly dispersed in the metal ion solution;
and step 3: weighing a proper amount of sodium hydroxide and anhydrous sodium carbonate to prepare a sodium hydroxide-sodium carbonate mixed solution B;
and 4, step 4: dropwise adding the solution B into the solution A under the condition of strong stirring until the pH value of a reaction system is 10.0;
and 5: aging the obtained suspension for 24h under the condition of water bath at 60 ℃;
step 6: filtering and washing the aged suspension, and drying in an oven at 60 ℃ overnight to obtain magnesium-aluminum hydrotalcite @ boron nitride (MgAl-LDH @ 5% BN);
preparing the magnesium aluminum hydrotalcite @ boron nitride-polyacrylic resin composite material by a suspension polymerization method;
putting monomer methyl acrylate into a 500ml three-neck flask A, sequentially adding a cross-linking agent divinylbenzene (with the cross-linking degree of 8%), an initiator benzoyl peroxide (accounting for 1 percent of the total amount of the monomers) and a modified material (accounting for 1 percent of the total amount of the monomers), and stirring and mixing uniformly at room temperature to obtain an oil phase;
adding gelatin with the mass fraction of 1 wt% into deionized water, placing the mixture into a 500ml three-neck flask B, stirring and heating to 80 ℃, keeping stirring until the mixture is uniform (30 minutes), stopping heating, dissolving the mixture by using sodium chloride (with the amount of 15 wt%) added at the rest temperature, and cooling the prepared water phase solution to room temperature to obtain a water phase;
after the stirring of the oil phase is stopped, adding the water phase with 4 times of the total mass of the oil phase into the oil phase, standing for a few minutes to mix the oil phase and the water phase, then stirring at the rotating speed of 400rpm of 300-. Washing the reacted solid product with deionized water, filtering for 6-8 times to remove unreacted monomers, naturally drying in air, putting into a 60 ℃ oven, and drying to obtain the sample of example 5: magnesium aluminum hydrotalcite @ boron nitride-polyacrylic resin composite material (1% MgAl-LDH @ 5% BN/PMA for short).
Example 6:
the modified material is a composite material of magnesium-aluminum hydrotalcite and boron nitride (the mass of the boron nitride accounts for 10 percent of the composite material);
preparing a magnesium-aluminum hydrotalcite and boron nitride composite material (MgAl-LDH @ 10% BN) by a precipitation method;
step 1: dissolving a proper amount of magnesium nitrate and aluminum nitrate in deionized water to form a metal ion solution A;
step 2: then adding a proper amount of boron nitride into the solution A, and mixing the boron nitride with the solution A by using ultrasonic waves to ensure uniform mixing so that the boron nitride is uniformly dispersed in the metal ion solution;
and step 3: weighing a proper amount of sodium hydroxide and anhydrous sodium carbonate to prepare a sodium hydroxide-sodium carbonate mixed solution B;
and 4, step 4: dropwise adding the solution B into the solution A under the condition of strong stirring until the pH value of a reaction system is 10.0;
and 5: aging the obtained suspension for 24h under the condition of water bath at 60 ℃;
step 6: filtering and washing the aged suspension, and drying in an oven at 60 ℃ overnight to obtain magnesium-aluminum hydrotalcite @ boron nitride (MgAl-LDH @ 10% BN for short);
preparing the magnesium aluminum hydrotalcite @ boron nitride-polyacrylic resin composite material by a suspension polymerization method;
putting monomer methyl acrylate into a 500ml three-neck flask A, sequentially adding a cross-linking agent divinylbenzene (with the cross-linking degree of 8%), an initiator benzoyl peroxide (accounting for 1 percent of the total amount of the monomers) and a modified material (accounting for 1 percent of the total amount of the monomers), and stirring and mixing uniformly at room temperature to obtain an oil phase;
adding gelatin with the mass fraction of 1 wt% into deionized water, placing the mixture into a 500ml three-neck flask B, stirring and heating to 80 ℃, keeping stirring until the mixture is uniform (30 minutes), stopping heating, dissolving the mixture by using sodium chloride (with the amount of 15 wt%) added at the rest temperature, and cooling the prepared water phase solution to room temperature to obtain a water phase;
after the stirring of the oil phase is stopped, adding the water phase with 4 times of the total mass of the oil phase into the oil phase, standing for a few minutes to mix the oil phase and the water phase, then stirring at the rotating speed of 400rpm of 300-. Washing the reacted solid product with deionized water, filtering for 6-8 times to remove unreacted monomers, naturally drying in air, putting into a 60 ℃ oven, and drying to obtain the sample of example 6: magnesium aluminum hydrotalcite @ boron nitride-polyacrylic resin composite material (1% MgAl-LDH @ 10% BN/PMA for short).
Example 7:
the modified material is a composite material of magnesium-aluminum hydrotalcite and boron nitride (the mass of the boron nitride accounts for 2 percent of the composite material);
preparing a magnesium-aluminum hydrotalcite and boron nitride composite material (MgAl-LDH @ 2% BN) by a precipitation method;
step 1: dissolving a proper amount of magnesium nitrate and aluminum nitrate in deionized water to form a metal ion solution A;
step 2: then adding a proper amount of boron nitride into the solution A, and mixing the boron nitride with the solution A by using ultrasonic waves to ensure uniform mixing so that the boron nitride is uniformly dispersed in the metal ion solution;
and step 3: weighing a proper amount of sodium hydroxide and anhydrous sodium carbonate to prepare a sodium hydroxide-sodium carbonate mixed solution B;
and 4, step 4: dropwise adding the solution B into the solution A under the condition of strong stirring until the pH value of a reaction system is 10.0;
and 5: aging the obtained suspension for 24h under the condition of water bath at 60 ℃;
step 6: filtering and washing the aged suspension, and drying in an oven at 60 ℃ overnight to obtain magnesium-aluminum hydrotalcite @ boron nitride (MgAl-LDH @ 2% BN for short);
preparing the magnesium aluminum hydrotalcite @ boron nitride-polyacrylic resin composite material by a suspension polymerization method;
putting monomer methyl acrylate into a 500ml three-neck flask A, sequentially adding a cross-linking agent divinylbenzene (with the cross-linking degree of 8%), an initiator benzoyl peroxide (accounting for 1 percent of the total amount of the monomers) and a modified material (accounting for 0.5 percent of the total amount of the monomers), and stirring and mixing uniformly at room temperature to obtain an oil phase;
adding gelatin with the mass fraction of 1 wt% into deionized water, placing the mixture into a 500ml three-neck flask B, stirring and heating to 80 ℃, keeping stirring until the mixture is uniform (30 minutes), stopping heating, dissolving the mixture by using sodium chloride (with the amount of 15 wt%) added at the rest temperature, and cooling the prepared water phase solution to room temperature to obtain a water phase;
after the stirring of the oil phase is stopped, adding the water phase with 4 times of the total mass of the oil phase into the oil phase, standing for a few minutes to mix the oil phase and the water phase, then stirring at the rotating speed of 400rpm of 300-. Washing the reacted solid product with deionized water, filtering for 6-8 times to remove unreacted monomers, naturally drying in air, putting into a 60 ℃ oven, and drying to obtain the sample of example 7: magnesium aluminum hydrotalcite @ boron nitride-polyacrylic resin composite material (0.5% MgAl-LDH @ 2% BN/PMA for short).
Example 8:
the modified material is a composite material of magnesium-aluminum hydrotalcite and boron nitride (the mass of the boron nitride accounts for 2 percent of the composite material);
preparing a magnesium-aluminum hydrotalcite and boron nitride composite material (MgAl-LDH @ 2% BN) by a precipitation method;
step 1: dissolving a proper amount of magnesium nitrate and aluminum nitrate in deionized water to form a metal ion solution A;
step 2: then adding a proper amount of boron nitride into the solution A, and mixing the boron nitride with the solution A by using ultrasonic waves to ensure uniform mixing so that the boron nitride is uniformly dispersed in the metal ion solution;
and step 3: weighing a proper amount of sodium hydroxide and anhydrous sodium carbonate to prepare a sodium hydroxide-sodium carbonate mixed solution B;
and 4, step 4: dropwise adding the solution B into the solution A under the condition of strong stirring until the pH value of a reaction system is 10.0;
and 5: aging the obtained suspension for 24h under the condition of water bath at 60 ℃;
step 6: filtering and washing the aged suspension, and drying in an oven at 60 ℃ overnight to obtain magnesium-aluminum hydrotalcite @ boron nitride (MgAl-LDH @ 2% BN for short);
preparing the magnesium aluminum hydrotalcite @ boron nitride-polyacrylic resin composite material by a suspension polymerization method;
putting monomer methyl acrylate into a 500ml three-neck flask A, sequentially adding a cross-linking agent divinylbenzene (with the cross-linking degree of 8%), an initiator benzoyl peroxide (accounting for 1 percent of the total amount of the monomers) and a modified material (accounting for 0.1 percent of the total amount of the monomers), and stirring and mixing uniformly at room temperature to obtain an oil phase;
adding gelatin with the mass fraction of 1 wt% into deionized water, placing the mixture into a 500ml three-neck flask B, stirring and heating to 80 ℃, keeping stirring until the mixture is uniform (30 minutes), stopping heating, dissolving the mixture by using sodium chloride (with the amount of 15 wt%) added at the rest temperature, and cooling the prepared water phase solution to room temperature to obtain a water phase;
after the stirring of the oil phase is stopped, adding the water phase with 4 times of the total mass of the oil phase into the oil phase, standing for a few minutes to mix the oil phase and the water phase, then stirring at the rotating speed of 400rpm of 300-. Washing the reacted solid product with deionized water, filtering for 6-8 times to remove unreacted monomers, naturally drying in air, putting into a 60 ℃ oven, and drying to obtain the sample of the embodiment 8: magnesium aluminum hydrotalcite @ boron nitride-polyacrylic resin composite material (0.1% MgAl-LDH @ 2% BN/PMA for short).
Comparative example 1:
the polyacrylic resin composite material is not added with any modifying material.
Putting monomer methyl acrylate into a 500ml three-neck flask A, sequentially adding a cross-linking agent divinylbenzene (with the cross-linking degree of 8%) and an initiator benzoyl peroxide (accounting for 1% of the total amount of the monomer), and stirring and mixing uniformly at room temperature to obtain an oil phase;
adding gelatin with the mass fraction of 1 wt% into deionized water, placing the mixture into a 500ml three-neck flask B, stirring and heating to 80 ℃, keeping stirring until the mixture is uniform (30 minutes), stopping heating, dissolving the mixture by using sodium chloride (with the amount of 15 wt%) added at the rest temperature, and cooling the prepared water phase solution to room temperature to obtain a water phase;
after the stirring of the oil phase is stopped, adding the water phase with 4 times of the total mass of the oil phase into the oil phase, standing for a few minutes to mix the oil phase and the water phase, then stirring at the rotating speed of 400rpm of 300-. Washing the reacted solid product with deionized water, filtering for 6-8 times to remove unreacted monomers, naturally drying in air, putting in a 60 ℃ oven, and drying to obtain the sample of the comparative example 1: polyacrylic resin composite materials (abbreviated as PMA).
The data obtained by testing the sphericity after grinding for examples 1-8 and comparative example 1 are shown in the following table:
TABLE 1 mechanical Properties (sphericity after grinding) of 9 resin samples in total for comparative example and example
From the above table, it can be seen that: the milled sphericity of comparative example 1 (unmodified polyacrylic resin, PMA) was 43.76%, and it can be seen from table 1 that the addition of boron nitride and magnesium aluminum hydrotalcite both had a promoting effect on the milled sphericity, where the milled sphericity of polyacrylic resin with 0.5% of boron nitride added reached 82.17%, while the addition of composite material formed from boron nitride and magnesium aluminum hydrotalcite had a more significant synergistic effect on the enhancement of the milled sphericity, e.g., the milled sphericity of polyacrylic resin modified with inorganic additives (1% MgAl-LDH @ 1% BN) reached 95.68%, which was 118.6% higher than that of comparative example 1 (unmodified sample).
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. An inorganic composite material-doped resin material with enhanced mechanical properties is characterized in that an inorganic additive material is added into acrylic acid mother liquor by an in-situ suspension polymerization method for polymerization, the sphericity (mechanical properties) after grinding is improved from 43.76% to 95.69%, and 118.62% is increased, wherein the inorganic additive material is one or more of boron nitride, magnesium aluminum hydrotalcite and boron nitride.
2. The inorganic composite doped mechanical property enhanced resin material of claim 1, wherein: the modified material is boron nitride, the mass fraction is 0.001 wt% -1 wt%, and the further optimization is 0.001 wt% -0.6 wt%.
3. The inorganic composite doped mechanical property enhanced resin material of claim 1, wherein: the other modified material is magnesium aluminum hydrotalcite, the mass fraction is 0.1 wt% -10 wt%, and the further optimization is 0.1 wt% -3 wt%.
4. The inorganic composite doped mechanical property enhanced resin material of claim 1, wherein: the modified material can also be a magnesium-aluminum hydrotalcite @ boron nitride composite material, and the mass fraction is 0.05 wt% -10 wt%, wherein the boron nitride accounts for 0.1 wt% -10 wt% of the magnesium-aluminum hydrotalcite @ boron nitride composite material.
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