CN113861471A - Formula and preparation process of high-resilience silica gel retraction membrane for ventilating and swallowing speaking valve - Google Patents
Formula and preparation process of high-resilience silica gel retraction membrane for ventilating and swallowing speaking valve Download PDFInfo
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- CN113861471A CN113861471A CN202111255159.4A CN202111255159A CN113861471A CN 113861471 A CN113861471 A CN 113861471A CN 202111255159 A CN202111255159 A CN 202111255159A CN 113861471 A CN113861471 A CN 113861471A
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- silicone rubber
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
- C08J2383/07—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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Abstract
The invention discloses a formula of a high-resilience silica gel retraction membrane for ventilating and swallowing speaking valves and a preparation process thereof, and the formula comprises the following steps: the formula comprises the following steps: 0.8-1.2kg of methyl vinyl silicone rubber, 0.2-0.4kg of fumed silica, 2.3-2.7g of structure control agent, 0.9-0.11kg of coupling functional group and 9-11g of platinum vulcanizing agent, and the crushing step is as follows: the vinyl silicone rubber and the fumed silica are pulverized by a pulverizing device. According to the invention, through the arrangement of the methyl vinyl silicone rubber, the fumed silica, the structure control agent, the coupling functional group and the platinum vulcanizing agent, the formed retraction membrane silica gel has a high rebound effect, wherein the tensile strength can reach about 8MPa, the tearing strength can reach about 30kN/m, the rebound rate can reach about 53 percent, the elongation rate can reach about 265 percent, the hardness of the rebound retraction membrane silica gel material is the same as that of the common retraction membrane silica gel, and the problem of poor rebound resilience of the conventional retraction membrane silica gel for ventilating and swallowing speaking valves is solved.
Description
Technical Field
The invention relates to the technical field of silica gel materials of retraction membranes, in particular to a formula of a high-resilience silica gel retraction membrane for ventilating and swallowing speaking valves and a manufacturing process thereof.
Background
The traditional ventilation and swallowing speaking valve high-resilience silica gel retraction membrane is prepared from 1kg of methyl vinyl silicone rubber, 0.55kg of precipitated silica, 0.05kg of a structure control agent and the like and 10g of platinum vulcanizing agent, and the silica gel has poor resilience, so that the tension strength, the tear strength, the resilience rate and the elongation rate of the ventilation and swallowing speaking valve silica gel retraction membrane are low, the use durability is influenced, and the ventilation and swallowing speaking valve high-resilience silica gel retraction membrane cannot be used for a long time.
Disclosure of Invention
In order to solve the problems in the background art, the invention aims to provide a formula of a silicone rubber material for a high-resilience retraction membrane of a ventilation and swallowing speaking valve and a manufacturing process thereof, which have the advantage of high resilience and solve the problem of poor resilience of the conventional silicone rubber for the ventilation and swallowing speaking valve retraction membrane.
In order to achieve the purpose, the invention provides the following technical scheme: a formula of a high-resilience silica gel retraction membrane for ventilating and swallowing speaking valves and a preparation process thereof comprise the following steps:
the formula comprises the following steps: 0.8-1.2kg of methyl vinyl silicone rubber, 0.2-0.4kg of fumed silica, 2.3-2.7g of structure control agent, 0.9-0.11kg of coupling functional group and 9-11g of platinum vulcanizing agent.
A crushing step: crushing the vinyl silicone rubber and the fumed silica by a crushing device, and then forming the vinyl silicone rubber and the fumed silica into small particles;
mixing: 0.8-1.2kg of methyl vinyl silicone rubber, 0.2-0.4kg of fumed silica, 2.3-2.7g of structure control agent, 0.9-0.11kg of coupling functional group and 9-11g of platinum vulcanizing agent are poured into a mixing device, and the methyl vinyl silicone rubber, the fumed silica, the structure control agent, the coupling functional group and the platinum vulcanizing agent are mixed by the mixing device for 3-5 minutes;
a smelting step: pouring the mixed methyl vinyl silicone rubber, fumed silica, structure control agent, coupling functional group and platinum vulcanizing agent into a smelting device, and smelting the methyl vinyl silicone rubber, fumed silica, structure control agent, coupling functional group and platinum vulcanizing agent together through the smelting device;
an injection step: pouring the methyl vinyl silicone rubber, the fumed silica, the structure control agent, the coupling functional group and the platinum vulcanizing agent into an injection machine, injecting the methyl vinyl silicone rubber, the fumed silica, the structure control agent, the coupling functional group and the platinum vulcanizing agent into a mold through the injection machine, and cooling for 10-14 minutes to form retraction membrane silica gel;
a storage step: the retraction membrane silica gel is sealed through a sealing device, and then the sealed retraction membrane silica gel is placed into a storage warehouse for storage.
In the pulverization step, the pulverization device is preferably a small pulverization device, and the small pulverization device can pulverize the vinyl silicone rubber and the fumed silica into small particles in layers, so that the vinyl silicone rubber and the fumed silica are prevented from being too large and difficult to melt.
In the mixing step, the mixing device is a mixing device with a screw mixing blade, and the methyl vinyl silicone rubber, the fumed silica, the structure control agent, the coupling functional group and the platinum vulcanizing agent are uniformly mixed.
Preferably, in the smelting step, the smelting device is a small-sized smelting device, and the smelting temperature is 400-600 ℃, so that the smelting is convenient.
In a preferred embodiment of the present invention, the implanter is an ion implanter, and the ion implanter may completely inject the raw material into the mold.
Preferably, in the storing step, a ventilation device is installed inside the storage warehouse to ensure the ventilation of the storage warehouse.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention fuses methyl vinyl silicone rubber, gas phase method silicon dioxide, structure control agent, coupling functional group and platinum vulcanizing agent in proportion, so that the formed retraction membrane silica gel has high rebound effect, wherein the tensile strength can reach about 8MPa, the tearing strength can reach about 30kN/m, the rebound rate can reach about 53 percent, the elongation rate can reach about 265 percent, the hardness of the rebound retraction membrane silica gel material is the same as that of the common retraction membrane silica gel, the problem of poor rebound resilience of the traditional ventilation and swallowing speaking valve retraction membrane silica gel material is solved, the formula and the preparation process of the silicone rubber of the high-resilience retraction membrane for ventilating and swallowing speaking valves have the advantage of high resilience, the tensile strength, the tearing strength, the rebound rate and the elongation are high, and the use durability is ensured, so that the material can be used for a long time.
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
a formula of a high-resilience silica gel retraction membrane for ventilating and swallowing speaking valves and a preparation process thereof comprise the following steps:
the formula comprises the following steps: 0.8kg of methyl vinyl silicone rubber, 0.2kg of fumed silica, 2.3g of a structure control agent, 0.9kg of a coupling functional group and 9g of a platinum vulcanizing agent.
A crushing step: crushing the vinyl silicone rubber and the fumed silica by a crushing device, and then forming the vinyl silicone rubber and the fumed silica into small particles;
mixing: 0.8kg of methyl vinyl silicone rubber, 0.2kg of fumed silica, 2.3g of a structure control agent, 0.9kg of a coupling functional group and 9g of a platinum vulcanizing agent are poured into a mixing device, and the methyl vinyl silicone rubber, the fumed silica, the structure control agent, the coupling functional group and the platinum vulcanizing agent are mixed by the mixing device for 3 minutes;
a smelting step: pouring the mixed methyl vinyl silicone rubber, fumed silica, structure control agent, coupling functional group and platinum vulcanizing agent into a smelting device, and smelting the methyl vinyl silicone rubber, fumed silica, structure control agent, coupling functional group and platinum vulcanizing agent together through the smelting device;
an injection step: pouring the methyl vinyl silicone rubber, the fumed silica, the structure control agent, the coupling functional group and the platinum vulcanizing agent into an injection machine, injecting the methyl vinyl silicone rubber, the fumed silica, the structure control agent, the coupling functional group and the platinum vulcanizing agent into a mold through the injection machine, and cooling for 10 minutes to form retraction membrane silica gel;
a storage step: the retraction membrane silica gel is sealed through a sealing device, then the sealed retraction membrane silica gel is placed into a storage warehouse and stored through the storage warehouse, and the diameter of the high-resilience silica gel retraction membrane wafer is 19 mm, and the thickness of the high-resilience silica gel retraction membrane wafer is 0.3 mm.
Example two:
a formula of a high-resilience silica gel retraction membrane for ventilating and swallowing speaking valves and a preparation process thereof comprise the following steps:
the material preparation step: 1kg of methyl vinyl silicone rubber, 0.3kg of fumed silica, 2.5g of a structure control agent, 0.1kg of a coupling functional group and 10g of a platinum vulcanizing agent.
A crushing step: crushing the vinyl silicone rubber and the fumed silica by a crushing device, and then forming the vinyl silicone rubber and the fumed silica into small particles;
mixing: pouring 1kg of methyl vinyl silicone rubber, 0.3kg of fumed silica, 2.5g of a structure control agent, 0.1kg of a coupling functional group and 10g of a platinum vulcanizing agent into a mixing device, and mixing the methyl vinyl silicone rubber, the fumed silica, the structure control agent, the coupling functional group and the platinum vulcanizing agent through the mixing device for 4 minutes;
a smelting step: pouring the mixed methyl vinyl silicone rubber, fumed silica, structure control agent, coupling functional group and platinum vulcanizing agent into a smelting device, and smelting the methyl vinyl silicone rubber, fumed silica, structure control agent, coupling functional group and platinum vulcanizing agent together through the smelting device;
an injection step: pouring the methyl vinyl silicone rubber, the fumed silica, the structure control agent, the coupling functional group and the platinum vulcanizing agent into an injection machine, injecting the methyl vinyl silicone rubber, the fumed silica, the structure control agent, the coupling functional group and the platinum vulcanizing agent into a mold through the injection machine, and cooling for 12 minutes to form retraction membrane silica gel;
a storage step: the retraction membrane silica gel is sealed through a sealing device, then the sealed retraction membrane silica gel is placed into a storage warehouse and stored through the storage warehouse, and the diameter of the high-resilience silica gel retraction membrane wafer is 19 mm, and the thickness of the high-resilience silica gel retraction membrane wafer is 0.3 mm.
Example three:
a formula of a high-resilience silica gel retraction membrane for ventilating and swallowing speaking valves and a preparation process thereof comprise the following steps:
the material preparation step: 1.2kg of methyl vinyl silicone rubber, 0.4kg of fumed silica, 2.7g of a structure control agent, 0.11kg of a coupling functional group and 11g of a platinum vulcanizing agent.
A crushing step: crushing the vinyl silicone rubber and the fumed silica by a crushing device, and then forming the vinyl silicone rubber and the fumed silica into small particles;
mixing: pouring 1.2kg of methyl vinyl silicone rubber, 0.4kg of fumed silica, 2.7g of a structure control agent, 0.11kg of a coupling functional group and 11g of a platinum vulcanizing agent into a mixing device, and mixing the methyl vinyl silicone rubber, the fumed silica, the structure control agent, the coupling functional group and the platinum vulcanizing agent by the mixing device for 5 minutes;
a smelting step: pouring the mixed methyl vinyl silicone rubber, fumed silica, structure control agent, coupling functional group and platinum vulcanizing agent into a smelting device, and smelting the methyl vinyl silicone rubber, fumed silica, structure control agent, coupling functional group and platinum vulcanizing agent together through the smelting device;
an injection step: pouring the methyl vinyl silicone rubber, the fumed silica, the structure control agent, the coupling functional group and the platinum vulcanizing agent into an injection machine, injecting the methyl vinyl silicone rubber, the fumed silica, the structure control agent, the coupling functional group and the platinum vulcanizing agent into a mold through the injection machine, and cooling for 14 minutes to form retraction membrane silica gel;
a storage step: the retraction membrane silica gel is sealed through a sealing device, then the sealed retraction membrane silica gel is placed into a storage warehouse and stored through the storage warehouse, and the diameter of the high-resilience silica gel retraction membrane wafer is 19 mm, and the thickness of the high-resilience silica gel retraction membrane wafer is 0.3 mm.
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 can 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 (7)
1. A formula of a high-resilience silica gel retraction membrane for ventilating and swallowing speaking valves is characterized in that: comprises the following steps: 0.8-1.2kg of methyl vinyl silicone rubber, 0.2-0.4kg of fumed silica, 2.3-2.7g of structure control agent, 0.9-0.11kg of coupling functional group and 9-11g of platinum vulcanizing agent.
2. The process for preparing the silicone rubber of the high-resilience retraction membrane of the ventilation and swallowing speaking valve, according to claim 1, is characterized in that: the method comprises the following steps:
a crushing step: crushing the vinyl silicone rubber and the fumed silica by a crushing device, and then forming the vinyl silicone rubber and the fumed silica into small particles;
mixing: 0.8-1.2kg of methyl vinyl silicone rubber, 0.2-0.4kg of fumed silica, 2.3-2.7g of structure control agent, 0.9-0.11kg of coupling functional group and 9-11g of platinum vulcanizing agent are poured into a mixing device, and the methyl vinyl silicone rubber, the fumed silica, the structure control agent, the coupling functional group and the platinum vulcanizing agent are mixed by the mixing device for 3-5 minutes;
a smelting step: pouring the mixed methyl vinyl silicone rubber, fumed silica, structure control agent, coupling functional group and platinum vulcanizing agent into a smelting device, and smelting the methyl vinyl silicone rubber, fumed silica, structure control agent, coupling functional group and platinum vulcanizing agent together through the smelting device;
an injection step: pouring the methyl vinyl silicone rubber, the fumed silica, the structure control agent, the coupling functional group and the platinum vulcanizing agent into an injection machine, injecting the methyl vinyl silicone rubber, the fumed silica, the structure control agent, the coupling functional group and the platinum vulcanizing agent into a mold through the injection machine, and cooling for 10-14 minutes to form a retraction film;
a storage step: the silica gel retraction membrane is sealed through a sealing device, and then the sealed silica gel retraction membrane is placed into a storage warehouse for storage.
3. The process for preparing the silicone rubber of the high-resilience retraction membrane of the ventilation and swallowing speaking valve, which is claimed in claim 2, is characterized in that: in the crushing step, the crushing device is a small crushing device, and the small particles in the vinyl silicone rubber and the fumed silica can be crushed by the small crushing device, so that the vinyl silicone rubber and the fumed silica are prevented from being too large to be easily smelted.
4. The process for preparing the silica gel of the high-resilience retraction membrane of the ventilation and swallowing speaking valve as claimed in claim 2, wherein: in the mixing step, the mixing device is a mixing device with a threaded mixing blade, and the methyl vinyl silicone rubber, the fumed silica, the structure control agent, the coupling functional group and the platinum vulcanizing agent are uniformly mixed.
5. The process for preparing the silicone rubber of the high-resilience retraction membrane of the ventilation and swallowing speaking valve, which is claimed in claim 2, is characterized in that: in the smelting step, the smelting device is a small-sized smelting device, and the smelting temperature is 400-600 ℃, so that the smelting is convenient.
6. The process for preparing the silica gel of the high-resilience retraction membrane of the ventilation and swallowing speaking valve as claimed in claim 2, wherein: and in the step of injecting, the implanter is an ion implanter which can completely inject the raw materials into the interior of the mould.
7. The process for preparing the silicone rubber of the high-resilience retraction membrane of the ventilation and swallowing speaking valve, which is claimed in claim 2, is characterized in that: in the storage step, a ventilation device is arranged in the storage warehouse, so that the ventilation of the storage warehouse is ensured.
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| CN202111255159.4A CN113861471A (en) | 2021-10-27 | 2021-10-27 | Formula and preparation process of high-resilience silica gel retraction membrane for ventilating and swallowing speaking valve |
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| CN202111255159.4A CN113861471A (en) | 2021-10-27 | 2021-10-27 | Formula and preparation process of high-resilience silica gel retraction membrane for ventilating and swallowing speaking valve |
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