Flame-retardant high-wear-resistance polysiloxane composite coating material and preparation method thereof

Abstract

The invention discloses a flame-retardant high-wear-resistance polysiloxane composite coating material and a preparation method thereof, and the flame-retardant high-wear-resistance polysiloxane composite coating material is prepared from the following raw materials in parts by mass: 80 parts of dimethyl siloxane, 0.1-1 part of vinyl ring body, 0.01-0.05 part of catalyst, 1-4 parts of nano auxiliary agent, 0-0.3 part of hydrolysis auxiliary agent and 10-20 parts of additive, various raw materials can be conveniently injected into the mixing tank by arranging a plurality of fixed pipelines, then stirring blades, a mixing channel, a mixing stirring shaft and an inner wall scraping plate are driven to rotate by a first driving motor, then the mixing tank is driven to rotate by arranging a second driving motor, and the mixing stirring shaft and the mixing tank are opposite in rotating direction, so that the raw materials can be conveniently mixed. According to the raw material mixing device, the mixing tank is arranged, so that the mixing sufficiency of raw materials can be guaranteed, meanwhile, the uniformity between the upper layer and the lower layer of the raw materials can be further guaranteed, various raw materials can be fully fused, and the finished product rate and quality of products are improved, and a mounting groove, a mounting shaft, a supporting roller, a supporting ring frame and a limiting ring groove are arranged, so that the mixing tank is rotationally supported; therefore, the stability of the mixing tank in the operation process is improved.

Description

Technical Field

[0001] The invention relates to the technical field of high-permeability reactive composite polysiloxane processing, in particular to a polysiloxane composite coating material with flame retardancy and high wear resistance and a preparation method thereof. Background Art

[0002] As we all know, polysiloxane usually refers to silicone oil that remains in liquid state at room temperature, which is generally divided into two categories: methyl silicone oil and modified silicone oil. The most commonly used silicone oil - methyl silicone oil, also known as ordinary silicone oil, has all methyl groups. Methyl silicone oil has good chemical stability, insulation, and good hydrophobic properties. It is prepared by hydrolyzing dimethylsilane with water to obtain a primary polycondensation ring body, and the ring body is cracked and distilled to obtain a low ring body. Then, the ring body, the capping agent, and the catalyst are put together to obtain a mixture of various polymerization degrees. Silicone oil can be obtained by removing low-boiling substances through reduced pressure distillation. Since polysiloxane has good flame retardant properties, halogen-free, pollution-free, and corrosion-resistant advantages, it is currently widely used in coating materials on the surfaces of automotive parts, furniture, etc. In the existing preparation of polysiloxane, its production equipment is not convenient for fully integrating its various raw materials, which will affect the yield and quality of the product. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a polysiloxane composite coating material with flame retardancy and high wear resistance and a preparation method thereof, so as to facilitate the full integration of its various raw materials, improve the yield and quality of the product, and effectively solve the problems in the background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A polysiloxane composite coating material with flame retardancy and high wear resistance comprises the following raw materials in parts by mass: 80 parts of dimethylsiloxane, 0.1-1 parts of vinyl ring body, 0.01-0.05 parts of catalyst, 1-4 parts of nano auxiliary agent, 0-0.3 parts of hydrolysis auxiliary agent and 10-20 parts of additives.

[0005] As a preferred technical solution of the present invention, the additive is epoxy resin.

[0006] As a preferred technical solution of the present invention, the catalyst is tetramethylammonium hydroxide.

[0007] A method for preparing a polysiloxane composite coating material with flame retardancy and high wear resistance comprises the following steps: (1) Dimethylsiloxane, vinyl ring body, catalyst, nano-additive, hydrolysis aid, and additives are placed in a mixing device according to their weight proportions for preliminary mixing, and the mixed liquid is placed in a reactor for heating reaction, the reaction temperature is controlled between 60 and 100 degrees, and the mixture is continuously stirred and heated for 4 to 8 hours to obtain a high permeability reaction composite polysiloxane polymer; (2) The high permeability reactive composite polysiloxane polymer solution obtained in step (1) is transported by mechanical transportation equipment, then added to a distillation tank, and then vacuum heated in the distillation tank to remove low-boiling point substances, thereby obtaining a high permeability reactive composite polysiloxane product.

[0008] As a preferred technical solution of the present invention, the mixing device includes a mixing device fixing seat, a fixing plate is provided at the edge position of the upper surface of the mixing device fixing seat, the side of the fixing plate is rotatably connected to a mixing tank via a connecting shaft, a second driving motor matching the mixing tank is installed on the side of the fixing plate, the upper surface of the mixing device fixing seat is provided with a rolling support assembly matching the mixing tank, a detachable mounting cover is installed at the opening at the end of the mixing tank, and a mixing assembly is installed on the mounting cover.

[0009] As a preferred technical solution of the present invention, the rolling support assembly includes a rolling support seat arranged on the upper surface of the mixing equipment fixed seat, the upper surface of the rolling support seat is provided with a limiting ring groove, the outer circumference of the mixing tank is connected to a support ring frame, the outer circumference of the support ring frame is provided with an installation groove, a plurality of installation shafts are evenly arranged in a ring shape in the installation groove, and a support roller is installed on the installation shaft.

[0010] As a preferred technical solution of the present invention, the plurality of support rollers are all rollingly connected in the limiting ring groove.

[0011] As a preferred technical solution of the present invention, the mixing tank and the mounting cover are fixedly connected by a plurality of fixing bolts, and a sealing ring gasket is installed at the connection between the mixing tank and the mounting cover.

[0012] As a preferred technical solution of the present invention, the mixing assembly includes a mixing and stirring shaft rotatably connected to the side of the mounting cover plate, a plurality of stirring blades are installed on the circumferential surface of the mixing and stirring shaft, the ends of the stirring blades are connected to inner wall scrapers slidably connected to the inner wall of the mixing tank, a plurality of mixing channels are opened on the sides of the stirring blades, and the ends of the mixing and stirring shaft are connected to a first driving motor located on the side of the mounting cover plate.

[0013] As a preferred technical solution of the present invention, a plurality of fixed pipes are provided at the edge of the outer side surface of the installation cover plate, and control valves are installed on the fixed pipes.

[0014] Compared with the prior art, the present invention has the following beneficial effects: By setting up multiple fixed pipes, it is convenient to inject various raw materials into the mixing tank, and then the first driving motor is used to drive the stirring blades, mixing channels, mixing stirring shafts and inner wall scrapers to rotate. Secondly, by setting up a second driving motor to drive the mixing tank to rotate, the rotation directions of the mixing stirring shaft and the mixing tank are opposite, thereby ensuring the full mixing of the raw materials, and further ensuring the uniformity between the upper and lower layers of the raw materials, thereby fully integrating the various raw materials, improving the yield and quality of the products, and arranging mounting grooves, supporting rollers, supporting ring frames and limiting ring grooves to facilitate the rotational support of the mixing tank, thereby improving the stability of the mixing tank during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the mixing device of the present invention.

[0016] Figure 2 It is a schematic diagram of the partial cross-sectional structure of the mixing device of the present invention.

[0017] Figure 3 It is a detailed structural diagram of the mixing device A of the present invention.

[0018] In the figure: a mixing equipment fixing seat 1, a rolling support seat 2, a mounting groove 3, a fixing plate 4, a mounting shaft 5, a supporting roller 6, a supporting ring frame 7, a sealing ring gasket 8, a fixing bolt 9, a fixing pipe 10, a first driving motor 11, a mounting cover plate 12, a stirring blade 13, a mixing channel 14, a second driving motor 15, a mixing tank 16, a limiting ring groove 17, a mixing stirring shaft 18, and an inner wall scraper 19. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in 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.

[0020] See also Figure 1-3 , the present invention provides a technical solution: A polysiloxane composite coating material with flame retardancy and high wear resistance comprises the following raw materials in parts by mass: 80 parts of dimethylsiloxane, 0.1-1 parts of vinyl ring body, 0.01-0.05 parts of catalyst, 1-4 parts of nano auxiliary agent, 0-0.3 parts of hydrolysis auxiliary agent and 10-20 parts of additives.

[0021] The additive is epoxy resin.

[0022] The catalyst is tetramethylammonium hydroxide.

[0023] A method for preparing a polysiloxane composite coating material with flame retardancy and high wear resistance comprises the following steps: (1) Dimethylsiloxane, vinyl ring body, catalyst, nano-additive, hydrolysis aid, and additives are placed in a mixing device according to their weight proportions for preliminary mixing, and the mixed liquid is placed in a reactor for heating reaction, the reaction temperature is controlled between 60 and 100 degrees, and the mixture is continuously stirred and heated for 4 to 8 hours to obtain a high permeability reaction composite polysiloxane polymer; (2) The high permeability reactive composite polysiloxane polymer solution obtained in step 1 is transported by mechanical transportation equipment, and then added to a distillation tank, and then vacuum heated in the distillation tank to remove low-boiling point substances, thereby obtaining a high permeability reactive composite polysiloxane product.

[0024] The mixing device includes a mixing device fixing seat 1, a fixing plate 4 is provided at the edge position of the upper surface of the mixing device fixing seat 1, a mixing tank 16 is rotatably connected to the side of the fixing plate 4 through a connecting shaft, a second driving motor 15 matched with the mixing tank 16 is installed on the side of the fixing plate 4, a rolling support assembly matched with the mixing tank 16 is provided on the upper surface of the mixing device fixing seat 1, a detachable mounting cover 12 is installed at the opening at the end of the mixing tank 16, and a mixing assembly is installed on the mounting cover 12.

[0025] The rolling support assembly includes a rolling support seat 2 arranged on the upper surface of the mixing equipment fixed seat 1, and a limiting ring groove 17 is provided on the upper surface of the rolling support seat 2. The outer peripheral surface of the mixing tank 16 is connected to the support ring frame 7, and the outer peripheral surface of the support ring frame 7 is provided with a mounting groove 3. A plurality of mounting shafts 5 are evenly arranged in a ring shape in the mounting groove 3, and a supporting roller 6 is installed on the mounting shaft 5.

[0026] The plurality of supporting rollers 6 are all rollingly connected in the limiting ring groove 17 .

[0027] The mixing tank 16 and the mounting cover plate 12 are fixedly connected by a plurality of fixing bolts 9 , and a sealing ring gasket 8 is installed at the connection between the mixing tank 16 and the mounting cover plate 12 .

[0028] The mixing assembly includes a mixing and stirring shaft 18 rotatably connected to the side of the mounting cover 12, a plurality of stirring blades 13 are installed on the circumference of the mixing and stirring shaft 18, the ends of the stirring blades 13 are connected to inner wall scrapers 19 slidably connected to the inner wall of the mixing tank 16, a plurality of mixing channels 14 are opened on the sides of the stirring blades 13, and the ends of the mixing and stirring shaft 18 are connected to a first drive motor 11 located on the side of the mounting cover 12.

[0029] A plurality of fixed pipes 10 are arranged at the edge of the outer side surface of the installation cover plate 12 , and control valves are installed on the fixed pipes 10 .

[0030] Various raw materials are injected into the mixing tank 16 from the fixed pipe 10 above. After the injection is completed, the mixing tank 16 is driven to rotate by the second driving motor 15. The rolling support seat 2 and the limiting ring groove 17 cooperate with the mounting groove 3, the mounting shaft 5, the supporting roller 6 and the supporting ring frame 7 to stably support the mixing tank 16 in rolling manner. The first driving motor 11 drives the mixing blades 13, the mixing channel 14 and the inner wall scraper 19 on the mixing and stirring shaft 18 to rotate. The first driving motor 11 and the second driving motor 15 rotate in opposite directions, thereby assisting the raw materials in the mixing tank 16 to flip up and down to ensure that the upper and lower layers of the raw materials can be evenly mixed. The inner wall scraper 19 can prevent the raw materials from sticking to the inner wall of the mixing tank 16.

[0031] The first drive motor 11 and the second drive motor 15 are both electrically connected to the external control switch group, and the connection relationship is a common means in the prior art. The first drive motor 11 and the second drive motor 15 are both models commonly used in the market.

[0032] 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 polysiloxane composite coating material with flame retardancy and high wear resistance, characterized in that: The invention comprises the following raw materials in parts by weight: 80 parts of dimethylsiloxane, 0.1-1 parts of vinyl ring body, 0.01-0.05 parts of catalyst, 1-4 parts of nano auxiliary agent, 0-0.3 parts of hydrolysis auxiliary agent and 10-20 parts of additive.

2. The flame retardant and highly wear-resistant polysiloxane composite coating material according to claim 1, characterized in that: The additive is epoxy resin.

3. The flame retardant and highly wear-resistant polysiloxane composite coating material according to claim 1, characterized in that: The catalyst is tetramethylammonium hydroxide.

4. A method for preparing a polysiloxane composite coating material having flame retardancy and high wear resistance as claimed in any one of claims 1 to 3, characterized in that: The following steps are involved: (1) Dimethylsiloxane, vinyl ring body, catalyst, nano-additive, hydrolysis aid, and additives are placed in a mixing device according to their weight proportions for preliminary mixing, and the mixed liquid is placed in a reactor for heating reaction, the reaction temperature is controlled between 60 and 100 degrees, and the mixture is continuously stirred and heated for 4 to 8 hours to obtain a high permeability reaction composite polysiloxane polymer; (2) The high permeability reactive composite polysiloxane polymer solution obtained in step (1) is transported by mechanical transportation equipment, then added to a distillation tank, and then vacuum heated in the distillation tank to remove low-boiling point substances, thereby obtaining a high permeability reactive composite polysiloxane product.

5. The method for preparing the flame-retardant and highly wear-resistant polysiloxane composite coating material according to claim 4, characterized in that: The mixing device comprises a mixing device fixing seat (1), a fixing plate (4) is provided at an edge position of the upper surface of the mixing device fixing seat (1), a side surface of the fixing plate (4) is rotatably connected to a mixing tank (16) via a connecting shaft, a second driving motor (15) matched with the mixing tank (16) is installed on the side surface of the fixing plate (4), a rolling support assembly matched with the mixing tank (16) is provided on the upper surface of the mixing device fixing seat (1), a detachable mounting cover plate (12) is installed at an opening at the end of the mixing tank (16), and a mixing assembly is installed on the mounting cover plate (12).

6. The method for preparing the flame-retardant and highly wear-resistant polysiloxane composite coating material according to claim 5, characterized in that: The rolling support assembly comprises a rolling support seat (2) arranged on the upper surface of the mixing device fixing seat (1), the upper surface of the rolling support seat (2) being provided with a limiting annular groove (17), the outer circumference of the mixing tank (16) being connected to a supporting ring frame (7), the outer circumference of the supporting ring frame (7) being provided with a mounting groove (3), a plurality of mounting shafts (5) being evenly arranged in an annular shape in the mounting groove (3), and a supporting roller (6) being installed on the mounting shaft (5).

7. The method for preparing the flame-retardant and highly wear-resistant polysiloxane composite coating material according to claim 6, characterized in that: The plurality of supporting rollers (6) are all rollingly connected in the limiting ring groove (17).

8. The method for preparing the flame-retardant and highly wear-resistant polysiloxane composite coating material according to claim 5, characterized in that: The mixing tank (16) and the mounting cover plate (12) are fixedly connected via a plurality of fixing bolts (9), and a sealing ring gasket (8) is installed at the connection between the mixing tank (16) and the mounting cover plate (12).

9. The method for preparing the flame-retardant and highly wear-resistant polysiloxane composite coating material according to claim 5, characterized in that: The mixing assembly comprises a mixing and stirring shaft (18) rotatably connected to the side of the mounting cover plate (12); a plurality of mixing blades (13) are mounted on the circumference of the mixing and stirring shaft (18); the ends of the mixing blades (13) are connected to inner wall scrapers (19) slidably connected to the inner wall of the mixing tank (16); a plurality of mixing channels (14) are provided on the sides of the mixing blades (13); and the ends of the mixing and stirring shaft (18) are connected to a first drive motor (11) located on the side of the mounting cover plate (12).

10. The method for preparing the polysiloxane composite coating material with flame retardancy and high wear resistance according to claim 5, characterized in that: A plurality of fixed pipes (10) are provided at the edge of the outer side surface of the installation cover plate (12), and control valves are installed on the fixed pipes (10).

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