Modified bentonite reinforced polyurethane binding material and preparation method thereof

Abstract

The invention discloses a polyurethane binding material based on modified bentonite reinforcement and a preparation method thereof. The polyurethane binding material based on the modified bentonite reinforcement preparation method comprises the following main components: a strength improving component, a reinforcing component and a neutralizing component. Through the lime, the reinforcing agent, the cement, the slag, the polymer material and the machine-made sand, the strength is more sufficient, the phenomenon of cracking caused by too low strength is avoided, through the gypsum, the plant fibers, the medium sand, the epoxy resin and the retarder, the overall fastening performance can be guaranteed, the phenomenon of internal oxidation is avoided, and the service life is prolonged. Through the neutralizer, the sodium hydroxide, the potassium hydroxide, the sodium carbonate, the sodium bicarbonate, the sulfur dioxide and the sulfur dioxide, the whole material can be more fully combined together, the whole stability is ensured, and the problem that a polyurethane binding material is easy to crack during use due to poor bentonite strength is solved; the normal use of the polyurethane bonding material is influenced.

Description

Technical Field

[0001] The invention relates to the technical field of polyurethane adhesive materials, in particular to a polyurethane adhesive material reinforced by modified bentonite and a preparation method thereof. Background Art

[0002] According to the patents published on the China Patent Network, the patent name is: A fireproof material based on modified bentonite and its preparation method, and the patent number is: 201610791396.5. The present invention discloses a fireproof material based on modified bentonite and its preparation method, which is prepared by the following raw materials in parts by weight: high calcium fly ash, 50-60 parts; silicate cement, 20-30 parts; modified bentonite, 15-25 parts; sodium dodecylbenzene sulfonate, 8-12 parts; silicon nitride powder, 7-9 parts; calcium stearate, 6-8 parts; sodium lauryl sulfate, 6-8 parts; sodium hexametaphosphate, 4-6 parts; triethanolamine, 4- 6 parts; zinc fluorosilicate, 3-5 parts; water, 100-140 parts; the modified bentonite preparation method is: put bentonite into a boric acid aqueous solution, the volume ratio of the bentonite to the boric acid aqueous solution is 1:1.2-1.4, the pH of the boric acid aqueous solution is 3.5-4.5, soak for 6-8 hours, then pour out the boric acid aqueous solution, wash the bentonite with water to a pH of 6.6-7.0, and dry at 40-50°C to prepare the modified bentonite. The modified bentonite preparation method is: put bentonite into a boric acid aqueous solution, the volume ratio of the bentonite to the boric acid aqueous solution is 1:1.3, the p of the boric acid aqueous solution H is 4, soak for 7 hours, then pour off the boric acid aqueous solution, wash the bentonite with water to a pH of 6.8, and dry it at 45°C. The fireproof material is made of the following raw materials in parts by weight: high calcium fly ash, 55 parts; silicate cement, 25 parts; modified bentonite, 20 parts; sodium dodecylbenzene sulfonate, 10 parts; silicon nitride powder, 8 parts; calcium stearate, 7 parts; sodium lauryl sulfate, 7 parts; sodium hexametaphosphate, 5 parts; triethanolamine, 5 parts; zinc fluorosilicate, 4 parts; water, 120 parts. The fireproof material is made of the following raw materials in parts by weight: high calcium fly ash, 50 parts; silicate cement, 20 parts; modified Bentonite, 15 parts; sodium dodecylbenzene sulfonate, 8 parts; silicon nitride powder, 7 parts; calcium stearate, 6 parts; sodium dodecyl sulfate, 6 parts; sodium hexametaphosphate, 4 parts; triethanolamine, 4 parts; zinc fluorosilicate, 3 parts; water, 100 parts. The fireproof material is made from the following raw materials in parts by weight; the fireproof material of the present invention has a high flame retardant level and high fireproof performance, and can be used to prepare Class A fireproof building materials; the preparation method of the fireproof material is simple and feasible, and the construction feasibility is high; however, the bentonite strength of the polyurethane adhesive material mentioned above is not good, and it is easy to crack during use, which affects the normal use of the polyurethane adhesive material.

[0003] Therefore, it is necessary to design and modify the polyurethane adhesive material to effectively prevent the poor strength of bentonite. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the purpose of the present invention is to provide a polyurethane adhesive material reinforced by modified bentonite and a preparation method thereof, which has the advantage of increasing the strength of bentonite and solves the problem of poor strength of bentonite.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a polyurethane adhesive material based on modified bentonite reinforcement and a preparation method thereof, wherein the main components of the polyurethane adhesive material modified bentonite reinforcement preparation method are: a strength-enhancing component, a reinforcing component and a neutralizing component.

[0006] As preferred embodiment of the present invention, the strength-enhancing component consists of lime, reinforcing agent, cement, slag, polymer material and machine-made sand, the reinforcing component consists of gypsum, plant fiber, medium sand, epoxy resin and retarder, and the neutralizing component consists of neutralizer, sodium hydroxide, potassium hydroxide, sodium carbonate, sodium bicarbonate, sulfur dioxide and sulfur dioxide.

[0007] As preferred in the present invention, the content of each component is 150 parts of lime, 200 kg / m 3 , 130 parts of cement, 100 parts of slag, 35 parts of gypsum, 28 parts of plant fiber, 90 parts of medium sand, 125 parts of epoxy resin, 168 kg / m 3 , Neutralizer 150kg / m 3 , 10 parts of sodium hydroxide, 13 parts of potassium hydroxide, 15 parts of sodium carbonate, 20 parts of sodium bicarbonate, 14 parts of sulfur dioxide, and 50 parts of sulfur dioxide.

[0008] As a preferred method of the present invention, it includes step a) searching for raw materials; step b) preparing bentonite slurry; step c) adding a modifier; step d) reaction treatment; step e) separation treatment; step f) drying treatment; step g) grinding treatment;

[0009] Step a) Finding raw materials: According to specific needs, select suitable bentonite as raw material, montmorillonite and illite are preferred;

[0010] Step b) preparing bentonite slurry: mixing bentonite and water in an appropriate proportion and stirring them sufficiently to form a uniform slurry;

[0011] Step c) adding a modifier: adding a suitable modifier to the bentonite slurry and mixing them thoroughly. The modifier may be an organic substance, an inorganic substance or a surfactant, etc., and is used to change the structure and properties of the bentonite;

[0012] Step d) reaction treatment: according to the characteristics of the modifier and the required reaction conditions, determine the appropriate parameters such as temperature, pressure and reaction time, select the appropriate mixture according to the properties and requirements of the modifier, and the mixture can be a solvent, a catalyst or other additives, and carry out a high-temperature reaction. The reactants are placed in a high-temperature reactor and heated to the required temperature;

[0013] Step e) separation treatment: the modified bentonite system after reaction and mixing will contain unreacted residues or other impurities, which need to be separated to remove these impurities, and a separation device is used for separation treatment;

[0014] Step f) Drying: Dry the separated materials using drying equipment, and keep the temperature at the same level without too much fluctuation during the process;

[0015] Step g) grinding: Grinding the dried material using a grinder with smaller particle size.

[0016] As a preferred embodiment of the present invention, the size and dimension need to be determined when searching for raw materials to avoid finding raw materials of inappropriate size.

[0017] As a preferred embodiment of the present invention, the adding of the modifier needs to be carried out under dust-free conditions to avoid dust from entering and affecting the adding quality.

[0018] As a preferred embodiment of the present invention, during the reaction process, the temperature and reaction time are well controlled to ensure that the reaction is fully carried out.

[0019] As a preferred embodiment of the present invention, the grinding process needs to be performed at least twice to make the ground material finer.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention can make its strength more sufficient through lime, reinforcing agent, cement, slag, polymer material and machine-made sand, avoid the phenomenon of cracking due to too low strength, ensure the overall tightness through gypsum, plant fiber, medium sand, epoxy resin and retarder, avoid the phenomenon of internal oxidation, and make the overall materials more fully combined through neutralizer, sodium hydroxide, potassium hydroxide, sodium carbonate, sodium bicarbonate, sulfur dioxide and sulfur dioxide, thereby ensuring the overall stability and solving the problem that the bentonite of polyurethane adhesive material has poor strength and is prone to cracking during use, thus affecting the normal use of polyurethane adhesive material. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The invention provides a polyurethane adhesive material based on modified bentonite reinforcement and a preparation method thereof. The main components of the polyurethane adhesive material modified bentonite reinforcement preparation method are: a strength-enhancing component, a reinforcement component and a neutralizing component.

[0024] The present invention is further configured such that the strength-enhancing component consists of lime, reinforcing agent, cement, slag, polymer material and machine-made sand, the reinforcing component consists of gypsum, plant fiber, medium sand, epoxy resin and retarder, and the neutralizing component consists of neutralizer, sodium hydroxide, potassium hydroxide, sodium carbonate, sodium bicarbonate, sulfur dioxide and sulfur dioxide.

[0025] The present invention is further configured that the content of each component is 150 parts of lime, 200 kg / m 3 , 130 parts of cement, 100 parts of slag, 35 parts of gypsum, 28 parts of plant fiber, 90 parts of medium sand, 125 parts of epoxy resin, 168 kg / m 3 , Neutralizer 150kg / m 3 , 10 parts of sodium hydroxide, 13 parts of potassium hydroxide, 15 parts of sodium carbonate, 20 parts of sodium bicarbonate, 14 parts of sulfur dioxide, and 50 parts of sulfur dioxide.

[0026] The present invention is further configured to include the steps of a) searching for raw materials; b) preparing bentonite slurry; c) adding a modifier; d) reaction treatment; e) separation treatment; f) drying treatment; and g) grinding treatment.

[0027] Step a) Finding raw materials: According to specific needs, select suitable bentonite as raw material, montmorillonite and illite are preferred;

[0028] Step b) preparing bentonite slurry: mixing bentonite and water in an appropriate proportion and stirring them sufficiently to form a uniform slurry;

[0029] Step c) adding a modifier: adding a suitable modifier to the bentonite slurry and mixing them thoroughly. The modifier may be an organic substance, an inorganic substance or a surfactant, etc., and is used to change the structure and properties of the bentonite;

[0030] Step d) reaction treatment: according to the characteristics of the modifier and the required reaction conditions, determine the appropriate parameters such as temperature, pressure and reaction time, select the appropriate mixture according to the properties and requirements of the modifier, and the mixture can be a solvent, a catalyst or other additives, and carry out a high-temperature reaction. The reactants are placed in a high-temperature reactor and heated to the required temperature;

[0031] Step e) separation treatment: the modified bentonite system after reaction and mixing will contain unreacted residues or other impurities, which need to be separated to remove these impurities, and a separation device is used for separation treatment;

[0032] Step f) Drying: Dry the separated materials using drying equipment, and keep the temperature at the same level without too much fluctuation during the process;

[0033] Step g) grinding: Grinding the dried material using a grinder with smaller particle size.

[0034] The present invention is further configured such that when searching for raw materials, the dimensions and sizes need to be determined to avoid finding raw materials of inappropriate sizes.

[0035] The present invention is further configured such that the addition of the modifier needs to be carried out under dust-free conditions to prevent dust from entering and affecting the quality of the addition.

[0036] The present invention is further configured to control the temperature and reaction time during the reaction process to ensure that the reaction is fully carried out.

[0037] The present invention is further configured such that the grinding process needs to be performed at least twice to make the ground material finer.

[0038] The working principle and use process of the present invention are as follows: first, the user selects suitable bentonite as a raw material according to specific needs, with montmorillonite and illite being preferred, and then the bentonite is mixed with water in an appropriate proportion and fully stirred to form a uniform slurry, and then a suitable modifier is added to the bentonite slurry and fully mixed. The modifier can be an organic substance, an inorganic substance or a surfactant, etc., which is used to change the structure and properties of the bentonite, and then according to the characteristics of the modifier and the required reaction conditions, the appropriate temperature, pressure, reaction time and other parameters are determined, and according to the properties and requirements of the modifier, an appropriate mixing agent is selected, and the mixing The mixture can be a solvent, a catalyst or other additives, and a high-temperature reaction is carried out. The reactants are placed in a high-temperature reactor and heated to the required temperature. The modified bentonite system after reaction and mixing will contain unreacted residues or other impurities, which need to be separated to remove these impurities. A separation device is used for separation, and the separated materials are then dried using a drying equipment. The temperature is kept at the same level, and the process should not fluctuate too much. Finally, the dried material is ground using a grinder with a smaller particle size to achieve the effect of increasing the strength of the bentonite.

[0039] In summary: the polyurethane adhesive material based on modified bentonite reinforcement and the preparation method thereof can make its strength more sufficient through the use of lime, reinforcing agent, cement, slag, polymer material and machine-made sand, avoiding the phenomenon of cracking due to too low strength; the overall tightness can be guaranteed through the use of gypsum, plant fiber, medium sand, epoxy resin and retarder, avoiding the phenomenon of internal oxidation; the overall material can be more fully combined through the use of neutralizer, sodium hydroxide, potassium hydroxide, sodium carbonate, sodium bicarbonate, sulfur dioxide and sulfur dioxide, ensuring the overall stability, and solving the problem that the bentonite of the polyurethane adhesive material has poor strength and is prone to cracking during use, affecting the normal use of the polyurethane adhesive material.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A polyurethane adhesive material based on modified bentonite and a preparation method thereof, Features: The main components of the polyurethane adhesive material modified bentonite reinforcement preparation method are: strength improving component, reinforcement component and neutralization component.

2. A polyurethane adhesive material reinforced by modified bentonite and a preparation method thereof according to claim 1, Features: The strength-enhancing component consists of lime, reinforcing agent, cement, slag, polymer material and machine-made sand, the reinforcing component consists of gypsum, plant fiber, medium sand, epoxy resin and retarder, and the neutralizing component consists of neutralizer, sodium hydroxide, potassium hydroxide, sodium carbonate, sodium bicarbonate, sulfur dioxide and sulfur dioxide.

3. A polyurethane adhesive material reinforced by modified bentonite and a preparation method thereof according to claim 1, Features: The content of each component is 150 parts of lime and 200 kg / m 3 , 130 parts of cement, 100 parts of slag, 35 parts of gypsum, 28 parts of plant fiber, 90 parts of medium sand, 125 parts of epoxy resin, 168 kg / m 3 , Neutralizer 150kg / m 3 , 10 parts of sodium hydroxide, 13 parts of potassium hydroxide, 15 parts of sodium carbonate, 20 parts of sodium bicarbonate, 14 parts of sulfur dioxide, and 50 parts of sulfur dioxide.

4. A polyurethane adhesive material based on modified bentonite reinforcement and a preparation method thereof according to claim 1, Features: The method comprises the steps of a) searching for raw materials; b) preparing bentonite slurry; c) adding a modifier; d) reaction treatment; e) separation treatment; f) drying treatment; and g) grinding treatment. Step a) Finding raw materials: According to specific needs, select suitable bentonite as raw material, montmorillonite and illite are preferred; Step b) preparing bentonite slurry: mixing bentonite and water in an appropriate proportion and stirring them sufficiently to form a uniform slurry; Step c) adding a modifier: adding a suitable modifier to the bentonite slurry and mixing them thoroughly. The modifier may be an organic substance, an inorganic substance or a surfactant, etc., and is used to change the structure and properties of the bentonite; Step d) reaction treatment: according to the characteristics of the modifier and the required reaction conditions, determine the appropriate parameters such as temperature, pressure and reaction time, select the appropriate mixture according to the properties and requirements of the modifier, and the mixture can be a solvent, a catalyst or other additives, and carry out a high-temperature reaction. The reactants are placed in a high-temperature reactor and heated to the required temperature; Step e) separation treatment: the modified bentonite system after reaction and mixing will contain unreacted residues or other impurities, which need to be separated to remove these impurities, and a separation device is used for separation treatment; Step f) Drying: Dry the separated materials using drying equipment, and keep the temperature at the same level without too much fluctuation during the process; Step g) grinding: Grinding the dried material using a grinder with smaller particle size.

5. A polyurethane adhesive material based on modified bentonite reinforcement and a preparation method thereof according to claim 4, Features: When searching for raw materials, the size and dimensions need to be determined to avoid finding raw materials of inappropriate sizes.

6. A polyurethane adhesive material reinforced by modified bentonite and a preparation method thereof according to claim 4, Features: The adding of the modifier needs to be carried out under dust-free conditions to avoid dust from entering and affecting the adding quality.

7. A polyurethane adhesive material reinforced by modified bentonite and a preparation method thereof according to claim 4, Features: During the reaction process, the temperature and reaction time are well controlled to ensure that the reaction is fully carried out.

8. A polyurethane adhesive material reinforced by modified bentonite and a preparation method thereof according to claim 4, Features: The grinding process needs to be performed at least twice to make the ground material finer.