Noise-proof felt based on microstructure improvement and preparation process thereof

Abstract

The invention discloses a deadening felt based on microstructure improvement. The deadening felt is prepared from the following raw materials in parts by weight: 50-70 parts of polyvinyl chloride resin, 20-30 parts of dioctyl terephthalate, 10-20 parts of modified graphene, 20-30 parts of barite powder, 20-30 parts of coarse whiting, 3-8 parts of an anti-aging agent and 1-2 parts of carbon black. The added barite powder, modified graphene and other polymer materials are matched, a polymer and modified graphene mixture deadening felt structure with a honeycomb structure is formed through a forming process, and in addition, the SBA-16 mesoporous molecular sieve has the advantages that the pore diameter range is large, the stability is good, the pore channel shape is diversified (cylindrical, spherical or flat-plate-shaped), and the deadening effect is good. Due to the excellent characteristics, the SBA-16 mesoporous molecular sieve material is endowed with excellent sound absorption performance, so that the product is high in sound insulation quantity and has a very good sound insulation effect, and due to the addition of the anti-aging agent, the product has a very good anti-aging effect.

Description

Technical Field

[0001] The present invention relates to the technical field of sound insulation felts, and in particular to a sound insulation felt based on microstructure improvement and a preparation process thereof. Background Art

[0002] Sound insulation felt, a high-density roll material with a certain degree of flexibility, is a sound insulation material commonly used in the construction industry. It is mainly used in combination with gypsum board for wall sound insulation and ceiling sound insulation. It is also used for sound insulation and damping of pipes and mechanical equipment.

[0003] However, most of the existing sound insulation felts are ordinary sound insulation felts, and the base material is generally EPDM rubber, polyvinyl chloride or chlorinated polyethylene, and the filler is quartz powder, heavy calcium, etc. The sound insulation felt prepared in this way has poor sound insulation performance and poor aging resistance. Therefore, a sound insulation felt based on microstructure improvement and a preparation process thereof are proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide a sound insulation felt based on microstructure improvement and a preparation process thereof to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A sound insulation felt based on microstructure improvement, characterized by comprising the following raw materials in parts by weight:

[0007] 50-70 parts of polyvinyl chloride resin, 20-30 parts of dioctyl terephthalate, 10-20 parts of modified graphene, 20-25 parts of SBA-16 mesoporous molecular sieve, 20-30 parts of barite powder, 20-30 parts of heavy calcium carbonate, 3-8 parts of antioxidant, and 1-2 parts of carbon black.

[0008] Preferably, the sound insulation felt based on microstructure improvement comprises the following raw materials in parts by weight:

[0009] 55-70 parts of polyvinyl chloride resin, 22-28 parts of dioctyl terephthalate, 12-18 parts of modified graphene, 21-25 parts of SBA-16 mesoporous molecular sieve, 23-30 parts of barite powder, 20-27 parts of heavy calcium, 4-8 parts of antioxidant, and 1-2 parts of carbon black.

[0010] Preferably, the sound insulation felt based on microstructure improvement comprises the following raw materials in parts by weight:

[0011] 60 parts of polyvinyl chloride resin, 25 parts of dioctyl terephthalate, 15 parts of modified graphene, 23 parts of SBA-16 mesoporous molecular sieve, 25 parts of barite powder, 25 parts of heavy calcium, 5 parts of antioxidant, and 1.5 parts of carbon black.

[0012] Preferably, the antioxidant is a mixture of antioxidant 1010 and antioxidant 168 in a mass ratio of 1:1.

[0013] Preferably, the preparation method of the modified graphene is:

[0014] Step 1: Mixing graphite oxide with a particle size of 50-130 nm with water and a strong base to obtain a mixed solution, wherein the mass ratio of graphite oxide to water is 1:500-1000 and the concentration of the strong base is 0.3-1 mg / mL;

[0015] Step 2: reflux the mixture in step 1 under stirring for 50-120 minutes;

[0016] Step 3: After the mixed solution is refluxed, the mixed solution is ultrasonicated to obtain an ultrasonic liquid, and then the ultrasonic liquid is centrifuged at a centrifugal speed of 8000-14000 r / min and a centrifugal time of 35-80 min to obtain the modified graphene.

[0017] Preferably, in step 1, the strong base is at least one of sodium hydroxide, potassium hydroxide, and barium hydroxide;

[0018] Preferably, in step 3, the ultrasonic power is 180-360W, and the ultrasonic time is 60-180min.

[0019] A method for preparing a sound insulation felt based on microstructure improvement, characterized by comprising the following steps:

[0020] Step 1: Weigh the required raw materials according to the formula and pour them into the reactor. Adjust the speed of the reactor to 100-300r / min and mix them evenly at 130-170℃;

[0021] Step 2: Granulate the mixed raw materials through a granulator to obtain PVC plastic particles of uniform size;

[0022] Step 3: Add the PVC plastic particles from step 2 into the twin-screw extruder, set the heating temperature of each area of the twin-screw extruder, and shape the material through the die mouth to form a molten sheet with a certain width and uniform thickness;

[0023] Step 4: directing the molten sheet extruded from the die in step 3 to a three-roll calender and pressing it into a sheet, thereby producing the sound insulation felt.

[0024] Preferably, in step three, the temperature of the twin-screw extruder zone 1 is 120-130°C, the temperature of the zone 2 is 140-150°C, the temperature of the zone 3 is 160-180°C, and the temperature of the zone 4 is 190-210°C.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention forms a sound insulation felt structure of a polymer and modified graphene mixture with a honeycomb structure by combining added barite powder, modified graphene and other polymer materials through a molding process. In addition, the SBA-16 mesoporous molecular sieve has a large pore size range, good stability, and various pore shapes (cylindrical, spherical or flat). These excellent properties give the SBA-16 mesoporous molecular sieve material excellent sound absorption performance, so that the product has high sound insulation volume and good sound insulation effect. By adding an antioxidant, the product has a good anti-aging effect. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with specific embodiments. 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 making creative efforts are within the scope of protection of the present invention.

[0028] A sound insulation felt based on microstructure improvement in this embodiment includes the following raw materials in parts by weight:

[0029] 50-70 parts of polyvinyl chloride resin, 20-30 parts of dioctyl terephthalate, 10-20 parts of modified graphene, 20-25 parts of SBA-16 mesoporous molecular sieve, 20-30 parts of barite powder, 20-30 parts of heavy calcium carbonate, 3-8 parts of antioxidant, and 1-2 parts of carbon black.

[0030] The sound insulation felt based on microstructure improvement of this embodiment includes the following raw materials in parts by weight:

[0031] 55-70 parts of polyvinyl chloride resin, 22-28 parts of dioctyl terephthalate, 12-18 parts of modified graphene, 21-25 parts of SBA-16 mesoporous molecular sieve, 23-30 parts of barite powder, 20-27 parts of heavy calcium, 4-8 parts of antioxidant, and 1-2 parts of carbon black.

[0032] The sound insulation felt based on microstructure improvement of this embodiment includes the following raw materials in parts by weight:

[0033] 60 parts of polyvinyl chloride resin, 25 parts of dioctyl terephthalate, 15 parts of modified graphene, 23 parts of SBA-16 mesoporous molecular sieve, 25 parts of barite powder, 25 parts of heavy calcium, 5 parts of antioxidant, and 1.5 parts of carbon black.

[0034] The antioxidant in this embodiment is a mixture of antioxidant 1010 and antioxidant 168 in a mass ratio of 1:1.

[0035] The preparation method of the modified graphene of this embodiment is:

[0036] Step 1: Mixing graphite oxide with a particle size of 50-130 nm with water and a strong base to obtain a mixed solution, wherein the mass ratio of graphite oxide to water is 1:500-1000 and the concentration of the strong base is 0.3-1 mg / mL;

[0037] Step 2: reflux the mixture in step 1 under stirring for 50-120 minutes;

[0038] Step 3: After the mixed solution is refluxed, the mixed solution is ultrasonicated to obtain an ultrasonic liquid, and then the ultrasonic liquid is centrifuged at a centrifugal speed of 8000-14000 r / min and a centrifugal time of 35-80 min to obtain the modified graphene.

[0039] In step 1 of this embodiment, the strong base is at least one of sodium hydroxide, potassium hydroxide, and barium hydroxide;

[0040] In step 3 of this embodiment, the ultrasonic power is 180-360 W, and the ultrasonic time is 60-180 min.

[0041] A method for preparing a sound insulation felt based on microstructure improvement comprises the following steps:

[0042] Step 1: Weigh the required raw materials according to the formula and pour them into the reactor. Adjust the speed of the reactor to 100-300r / min and mix them evenly at 130-170℃;

[0043] Step 2: Granulate the mixed raw materials through a granulator to obtain PVC plastic particles of uniform size;

[0044] Step 3: Add the PVC plastic particles from step 2 into the twin-screw extruder, set the heating temperature of each area of the twin-screw extruder, and shape the material through the die mouth to form a molten sheet with a certain width and uniform thickness;

[0045] Step 4: directing the molten sheet extruded from the die in step 3 to a three-roll calender and pressing it into a sheet, thereby producing the sound insulation felt.

[0046] In step 3 of this embodiment, the temperature of the twin-screw extruder zone 1 is 120-130°C, the temperature of the zone 2 is 140-150°C, the temperature of the zone 3 is 160-180°C, and the temperature of the zone 4 is 190-210°C.

[0047] Example 1:

[0048] A sound insulation felt based on microstructure improvement in this embodiment includes the following raw materials in parts by weight:

[0049] 50 parts of polyvinyl chloride resin, 20 parts of dioctyl terephthalate, 10 parts of modified graphene, 20 parts of SBA-16 mesoporous molecular sieve, 20 parts of barite powder, 20 parts of heavy calcium, 3 parts of antioxidant, and 1 part of carbon black.

[0050] The antioxidant in this embodiment is a mixture of antioxidant 1010 and antioxidant 168 in a mass ratio of 1:1.

[0051] The preparation method of the modified graphene of this embodiment is:

[0052] Step 1: Mix graphite oxide with a particle size of 50 nm with water and a strong base to obtain a mixed solution, wherein the mass ratio of graphite oxide to water is 1:500 and the concentration of the strong base is 0.3 mg / mL;

[0053] Step 2: reflux the mixture in step 1 under stirring for 50 minutes;

[0054] Step 3: After the mixed solution is refluxed, the mixed solution is ultrasonicated to obtain an ultrasonic liquid, and then the ultrasonic liquid is centrifuged at a centrifugal speed of 8000 r / min and a centrifugal time of 35 min to obtain the modified graphene.

[0055] In step 1 of this embodiment, the strong base is at least one of sodium hydroxide, potassium hydroxide, and barium hydroxide;

[0056] In step 3 of this embodiment, the ultrasonic power is 180 W and the ultrasonic time is 60 min.

[0057] A method for preparing a sound insulation felt based on microstructure improvement comprises the following steps:

[0058] Step 1: Weigh the required raw materials according to the formula and pour them into the reactor. Adjust the speed of the reactor to 100r / min and mix them evenly at 130℃;

[0059] Step 2: Granulate the mixed raw materials through a granulator to obtain PVC plastic particles of uniform size;

[0060] Step 3: Add the PVC plastic particles from step 2 into the twin-screw extruder, set the heating temperature of each area of the twin-screw extruder, and shape the material through the die mouth to form a molten sheet with a certain width and uniform thickness;

[0061] Step 4: directing the molten sheet extruded from the die in step 3 to a three-roll calender and pressing it into a sheet, thereby producing the sound insulation felt.

[0062] In step 3 of this embodiment, the temperature of the twin-screw extruder zone 1 is 120°C, the temperature of the zone 2 is 140°C, the temperature of the zone 3 is 160°C, and the temperature of the zone 4 is 190°C.

[0063] Example 2:

[0064] A sound insulation felt based on microstructure improvement in this embodiment includes the following raw materials in parts by weight:

[0065] 70 parts of polyvinyl chloride resin, 30 parts of dioctyl terephthalate, 20 parts of modified graphene, 25 parts of SBA-16 mesoporous molecular sieve, 30 parts of barite powder, 30 parts of heavy calcium, 8 parts of antioxidant, and 2 parts of carbon black.

[0066] The antioxidant in this embodiment is a mixture of antioxidant 1010 and antioxidant 168 in a mass ratio of 1:1.

[0067] The preparation method of the modified graphene of this embodiment is:

[0068] Step 1: Graphite oxide with a particle size of 130 nm is mixed with water and a strong base to obtain a mixed solution, wherein the mass ratio of graphite oxide to water is 1:1000 and the concentration of the strong base is 1 mg / mL;

[0069] Step 2: reflux the mixture in step 1 under stirring for 120 minutes;

[0070] Step 3: After the mixed solution is refluxed, the mixed solution is ultrasonicated to obtain an ultrasonic liquid, and then the ultrasonic liquid is centrifuged at a centrifugal speed of 14000 r / min and a centrifugal time of 80 min to obtain the modified graphene.

[0071] In step 1 of this embodiment, the strong base is at least one of sodium hydroxide, potassium hydroxide, and barium hydroxide;

[0072] In step 3 of this embodiment, the ultrasonic power is 360 W and the ultrasonic time is 180 min.

[0073] A method for preparing a sound insulation felt based on microstructure improvement comprises the following steps:

[0074] Step 1: Weigh the required raw materials according to the formula and pour them into the reactor. Adjust the speed of the reactor to 300r / min and mix them evenly at 170℃;

[0075] Step 2: Granulate the mixed raw materials through a granulator to obtain PVC plastic particles of uniform size;

[0076] Step 3: Add the PVC plastic particles from step 2 into the twin-screw extruder, set the heating temperature of each area of the twin-screw extruder, and shape the material through the die mouth to form a molten sheet with a certain width and uniform thickness;

[0077] Step 4: directing the molten sheet extruded from the die in step 3 to a three-roll calender and pressing it into a sheet, thereby producing the sound insulation felt.

[0078] In step 3 of this embodiment, the temperature of the twin-screw extruder zone 1 is 130°C, the temperature of the zone 2 is 150°C, the temperature of the zone 3 is 180°C, and the temperature of the zone 4 is 210°C.

[0079] Example 3:

[0080] A sound insulation felt based on microstructure improvement in this embodiment includes the following raw materials in parts by weight:

[0081] 60 parts of polyvinyl chloride resin, 25 parts of dioctyl terephthalate, 15 parts of modified graphene, 23 parts of SBA-16 mesoporous molecular sieve, 25 parts of barite powder, 25 parts of heavy calcium, 5 parts of antioxidant, and 1.5 parts of carbon black.

[0082] The antioxidant in this embodiment is a mixture of antioxidant 1010 and antioxidant 168 in a mass ratio of 1:1.

[0083] The preparation method of the modified graphene of this embodiment is:

[0084] Step 1: Graphite oxide with a particle size of 80 nm is mixed with water and a strong base to obtain a mixed solution, wherein the mass ratio of graphite oxide to water is 1:750 and the concentration of the strong base is 0.7 mg / mL;

[0085] Step 2: Reflux the mixture in step 1 under stirring for 85 minutes;

[0086] Step 3: After the mixed solution is refluxed, the mixed solution is ultrasonicated to obtain an ultrasonic liquid, and then the ultrasonic liquid is centrifuged at a centrifugal speed of 11000 r / min and a centrifugal time of 60 min to obtain the modified graphene.

[0087] In step 1 of this embodiment, the strong base is at least one of sodium hydroxide, potassium hydroxide, and barium hydroxide;

[0088] In step 3 of this embodiment, the ultrasonic power is 270 W and the ultrasonic time is 120 min.

[0089] A method for preparing a sound insulation felt based on microstructure improvement comprises the following steps:

[0090] Step 1: Weigh the required raw materials according to the formula and pour them into the reactor. Adjust the speed of the reactor to 200r / min and mix them evenly at 150℃;

[0091] Step 2: Granulate the mixed raw materials through a granulator to obtain PVC plastic particles of uniform size;

[0092] Step 3: Add the PVC plastic particles from step 2 into the twin-screw extruder, set the heating temperature of each area of the twin-screw extruder, and shape the material through the die mouth to form a molten sheet with a certain width and uniform thickness;

[0093] Step 4: directing the molten sheet extruded from the die in step 3 to a three-roll calender and pressing it into a sheet, thereby producing the sound insulation felt.

[0094] In step 3 of this embodiment, the temperature of the twin-screw extruder zone 1 is 125°C, the temperature of the zone 2 is 145°C, the temperature of the zone 3 is 170°C, and the temperature of the zone 4 is 200°C.

[0095] Example 4:

[0096] A sound insulation felt based on microstructure improvement in this embodiment includes the following raw materials in parts by weight:

[0097] 55 parts of polyvinyl chloride resin, 23 parts of dioctyl terephthalate, 13 parts of modified graphene, 22 parts of SBA-16 mesoporous molecular sieve, 23 parts of barite powder, 23 parts of heavy calcium, 4 parts of antioxidant, and 1.2 parts of carbon black.

[0098] The antioxidant in this embodiment is a mixture of antioxidant 1010 and antioxidant 168 in a mass ratio of 1:1.

[0099] The preparation method of the modified graphene of this embodiment is:

[0100] Step 1: Mix graphite oxide with a particle size of 65 nm with water and a strong base to obtain a mixed solution, wherein the mass ratio of graphite oxide to water is 1:600 and the concentration of the strong base is 0.5 mg / mL;

[0101] Step 2: Reflux the mixture in step 1 under stirring for 65 minutes;

[0102] Step 3: After the mixed solution is refluxed, the mixed solution is ultrasonicated to obtain an ultrasonic liquid, and then the ultrasonic liquid is centrifuged at a centrifugal speed of 9000 r / min and a centrifugal time of 45 min to obtain the modified graphene.

[0103] In step 1 of this embodiment, the strong base is at least one of sodium hydroxide, potassium hydroxide, and barium hydroxide;

[0104] In step 3 of this embodiment, the ultrasonic power is 230 W and the ultrasonic time is 90 min.

[0105] A method for preparing a sound insulation felt based on microstructure improvement comprises the following steps:

[0106] Step 1: Weigh the required raw materials according to the formula and pour them into the reactor. Adjust the speed of the reactor to 150r / min and mix them evenly at 140℃;

[0107] Step 2: Granulate the mixed raw materials through a granulator to obtain PVC plastic particles of uniform size;

[0108] Step 3: Add the PVC plastic particles from step 2 into the twin-screw extruder, set the heating temperature of each area of the twin-screw extruder, and shape the material through the die mouth to form a molten sheet with a certain width and uniform thickness;

[0109] Step 4: directing the molten sheet extruded from the die in step 3 to a three-roll calender and pressing it into a sheet, thereby producing the sound insulation felt.

[0110] In step 3 of this embodiment, the temperature of the twin-screw extruder zone 1 is 123°C, the temperature of the zone 2 is 143°C, the temperature of the zone 3 is 165°C, and the temperature of the zone 4 is 195°C.

[0111] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

[0112] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A sound insulation felt based on microstructure improvement, characterized in that: It includes the following raw materials in parts by weight: 50-70 parts of polyvinyl chloride resin, 20-30 parts of dioctyl terephthalate, 10-20 parts of modified graphene, 20-25 parts of SBA-16 mesoporous molecular sieve, 20-30 parts of barite powder, 20-30 parts of heavy calcium carbonate, 3-8 parts of antioxidant, and 1-2 parts of carbon black.

2. The sound insulation felt based on microstructure improvement according to claim 1, characterized in that: The sound insulation felt based on microstructure improvement includes the following raw materials in parts by weight: 55-70 parts of polyvinyl chloride resin, 22-28 parts of dioctyl terephthalate, 12-18 parts of modified graphene, 21-25 parts of SBA-16 mesoporous molecular sieve, 23-30 parts of barite powder, 20-27 parts of heavy calcium, 4-8 parts of antioxidant, and 1-2 parts of carbon black.

3. The sound insulation felt based on microstructure improvement according to claim 2, characterized in that: The sound insulation felt based on microstructure improvement includes the following raw materials in parts by weight: 60 parts of polyvinyl chloride resin, 25 parts of dioctyl terephthalate, 15 parts of modified graphene, 25 parts of barite powder, 23 parts of SBA-16 mesoporous molecular sieve, 25 parts of heavy calcium, 5 parts of antioxidant, and 1.5 parts of carbon black.

4. The sound insulation felt based on microstructure improvement according to claim 1, characterized in that: The antioxidant is a mixture of antioxidant 1010 and antioxidant 168 in a mass ratio of 1:

1.

5. The sound insulation felt based on microstructure improvement according to claim 1, characterized in that: The preparation method of the modified graphene is: Step 1: Mixing graphite oxide with a particle size of 50-130 nm with water and a strong base to obtain a mixed solution, wherein the mass ratio of graphite oxide to water is 1:500-1000 and the concentration of the strong base is 0.3-1 mg / mL; Step 2: reflux the mixture in step 1 under stirring for 50-120 minutes; Step 3: After the mixed solution is refluxed, the mixed solution is ultrasonicated to obtain an ultrasonic liquid, and then the ultrasonic liquid is centrifuged at a centrifugal speed of 8000-14000 r / min and a centrifugal time of 35-80 min to obtain the modified graphene.

6. The sound insulation felt based on microstructure improvement according to claim 5, characterized in that: In the step 1, the strong base is at least one of sodium hydroxide, potassium hydroxide, and barium hydroxide.

7. The sound insulation felt based on microstructure improvement according to claim 5, characterized in that: In the step 3, the ultrasonic power is 180-360W, and the ultrasonic time is 60-180min.

8. A method for preparing a sound insulation felt based on microstructure improvement, characterized in that: The following steps are involved: Step 1: Weigh the required raw materials according to the formula and pour them into the reactor. Adjust the speed of the reactor to 100-300r / min and mix them evenly at 130-170℃; Step 2: Granulate the mixed raw materials through a granulator to obtain PVC plastic particles of uniform size; Step 3: Add the PVC plastic particles from step 2 into the twin-screw extruder, set the heating temperature of each area of the twin-screw extruder, and shape the material through the die mouth to form a molten sheet with a certain width and uniform thickness; Step 4: directing the molten sheet extruded from the die in step 3 to a three-roll calender and pressing it into a sheet, thereby obtaining the sound insulation felt.

9. The method for preparing a sound insulation felt based on microstructure improvement according to claim 8, characterized in that: In the step 3, the temperature of the twin-screw extruder zone 1 is 120-130°C, the temperature of the zone 2 is 140-150°C, the temperature of the zone 3 is 160-180°C, and the temperature of the zone 4 is 190-210°C.