CN112457672A - Antistatic foamed silica gel plate composition and foamed silica gel plate production method - Google Patents
Antistatic foamed silica gel plate composition and foamed silica gel plate production method Download PDFInfo
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Abstract
The invention discloses an antistatic foaming silica gel plate composition and a production method of the foaming silica gel plate, which comprises silicon rubber, a foaming agent, a vulcanizing agent, an external coating type antistatic agent, an internal mixing type antistatic agent and a discharge fiber, wherein firstly, because the internal mixing type and external coating type antistatic agents are adopted, the surface can be provided with a smooth molecular layer, the friction coefficient is reduced, the effect of reducing the generation probability of static electricity is achieved, in addition, the invention has good lubricity, the purposes of inhibiting and reducing the generation of static electricity in the foaming silica gel plate composition are achieved, secondly, the flow guide of the static electricity can be realized through the effect of a grid type discharge fiber in the foaming silica gel composition, the generated static electricity can be quickly leaked and dispersed, the local accumulation of the static electricity is effectively prevented, the effect of releasing the static electricity to the atmosphere is achieved, and finally, by means of weaving polymerization treatment and pressure curing treatment production, the grid type discharge fiber and the foaming silica gel composition can be skillfully polymerized, the strength is improved, and a high-density state is achieved.
Description
Technical Field
The invention relates to the technical field of foaming silica gel plates, in particular to an antistatic foaming silica gel plate composition and a production method of a foaming silica gel plate.
Background
Silica gel has the characteristics of organic polymer elastomers and has the adaptability of inorganic substances to wide high and low temperatures, and silica gel products become the first choice materials in the fields of military aerospace, medical treatment, automobiles, buildings and the like. The foaming silica gel plate not only keeps the original excellent performance of silica gel, but also has the characteristics of heat insulation, sound insulation, shock absorption, light weight and the like, and the application field of the foaming silica gel plate is greatly extended. The foaming multiplying power of silica gel board is higher, and its density is lower, and product weight with the volume is just lighter, and is thermal-insulated simultaneously, gives sound insulation, and shock-absorbing performance just is better.
According to the above, although the existing foaming silica gel plate has various advantages, the static electricity is not amplified and neutralized, so that the static electricity is easily accumulated, and the application range and the scene of the foaming silica gel plate are greatly restricted. Therefore, in view of the above drawbacks, it is necessary to design an antistatic foamed silica gel sheet composition and a method for producing a foamed silica gel sheet.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the antistatic foaming silica gel plate composition and the production method of the foaming silica gel plate are provided to solve the problem that static accumulation is easy to occur in the conventional foaming silica gel plate although the conventional foaming silica gel plate has various advantages.
In order to solve the technical problems, the technical scheme of the invention is as follows: an antistatic foaming silica gel plate composition comprises silicone rubber, a foaming agent, a vulcanizing agent, an external coating type antistatic agent, an internal mixing type antistatic agent and discharge fibers, wherein the components in parts by weight are as follows:
80-90 parts of silicone rubber
3-4 parts of foaming agent
1-2 parts of vulcanizing agent
2-4 parts of external coating type antistatic agent
2-5 parts of internal mixing type antistatic agent
2-5 parts of discharge fiber
The foaming agent comprises the following components in parts by weight:
40-60 parts of azobisisobutyronitrile
25-40 parts of methyl vinyl silicone rubber
15-20 parts of vinyl silicone oil
The vulcanizing agent comprises the following components in parts by weight:
50-70 parts of dibenzoyl peroxide
30-50 parts of methyl vinyl silicone rubber
The external coating type antistatic agent comprises the following components in parts by weight:
40-60 parts of alkyl quaternary ammonium salt
30-40 parts of chloride
10-20 parts of resin adhesive
The internal mixing type antistatic agent comprises the following components in parts by weight:
35-70 parts of phosphoric acid
30-65 parts of dithiocarbamate
The discharge fiber comprises the following components in parts by weight:
75-85 parts of fabric
8-15 parts of graphite
5-7 parts of copper sulfide
2-3 parts of polycarbonate.
The antistatic foaming silica gel plate composition is characterized in that a smooth molecular layer is formed on the surface under the combined action of phosphoric acid and dithiocarbamate in an internal mixing type antistatic agent and alkyl quaternary ammonium salt and chloride in an external coating type antistatic agent, so that the friction coefficient is reduced, the effect of reducing the probability of generating static electricity is achieved, and the composition has good lubricity, so that the purposes of inhibiting and reducing the generation of static electricity in the foaming silica gel plate composition are achieved.
The graphite and the copper sulfide in the discharge fiber can guide static passing through the surface of the fabric, can quickly leak and disperse the generated static, effectively prevent the local accumulation of the static, and facilitate corona discharge, so that the effect of releasing the static to the atmosphere is achieved.
The foaming agent and the vulcanizing agent can jointly promote the foaming effect and accelerate the foaming speed of the silicone rubber, and the preparation of the foaming agent and the vulcanizing agent is well known by the technical personnel in the field, so that the preparation is not required to be disclosed.
The invention also provides a production method of the antistatic foaming silica gel plate composition, which comprises the following steps:
step (1), base material preparation treatment: proportioning silicon rubber, a foaming agent, a vulcanizing agent and an internal mixing type antistatic agent in proportion, and stirring and mixing at a high speed to form a foamed mixture;
step (2) fiber mixed weaving treatment: firstly, proportioning graphite, copper sulfide and polycarbonate in proportion, stirring at a high speed to form a conductive mixture, and then mixing and weaving the conductive mixture and a fabric by an adsorption method to form a fiber mixed fabric;
step (3), knitting polymerization treatment: firstly, carrying out grid weaving on the fiber mixed fabric in the step (2), and then wrapping the mixture foamed in the step (1) on the outer layer of the grid fiber mixed fabric to form a foamed fiber mixed fabric mixture to be cured;
and (4) pressurizing and curing treatment: pressurizing the foamed fiber mixed and woven mixture in the step (3) by an extruder to form a high-density plate-shaped solidified foamed fiber mixed and woven mixture;
step (5), coating antistatic treatment: and (4) attaching an external coating type antistatic agent to the outer surface of the cured foaming fiber mixed mixture in the step (4) in a spraying manner, and finally realizing the antistatic foaming silica gel plate composition.
Further, in the step (1), the silicone rubber, the foaming agent and the vulcanizing agent are stirred at a high speed in advance, and then the silicone rubber, the foaming agent and the vulcanizing agent are poured into the internal mixing type antistatic agent for stirring again after standing for 10-20 min.
Further, the internal mixing type antistatic agent in the step (1) is formed by mixing phosphoric acid and dithiocarbamate.
Furthermore, the grid type weaving in the step (3) is composed of a plurality of fiber mixed weaves which are crisscrossed and interpenetrated with each other under the same plane.
Further, after the step (4), the outer surface of the solidified foaming fiber mixed and woven mixture is polished, so that the fabric of the fiber mixed and woven mixture in the inner part is partially exposed.
Further, the external coating type antistatic agent in the step (5) is formed by mixing alkyl quaternary ammonium salt, chloride and resin adhesive, and can be adhered to the partially exposed outer surface of the fabric of the fiber mixed fabric to achieve the covering effect of the film.
The production method of the antistatic foaming silica gel plate composition is characterized in that an internal mixing type antistatic agent is added into the foaming composition, then the fiber mixed fabric is subjected to grid weaving and is subjected to pressure polymerization with the foaming mixture, and the spraying and the adhesion of an external coating type antistatic agent can be conveniently carried out after the polishing.
Compared with the prior art, the antistatic foaming silica gel plate composition and the production method of the foaming silica gel plate have the following advantages:
1. firstly, due to the adoption of the double design of the internal mixing type antistatic agent and the external coating type antistatic agent, the surface of the foamed silica gel plate composition can be provided with a smooth molecular layer, so that the friction coefficient is reduced, the effect of reducing the generation probability of static electricity is achieved, and the foamed silica gel plate composition has good lubricity, so that the purposes of inhibiting and reducing the generation of static electricity in the foamed silica gel plate composition are achieved.
2. And secondly, the flow guide of static electricity can be realized through the action of the grid type discharge fibers in the foaming silica gel composition, the generated static electricity can be quickly leaked and dispersed, the local accumulation of the static electricity is effectively prevented, the corona discharge is convenient to carry out, and the effect of releasing the static electricity to the atmosphere is achieved.
3. Finally, by means of the production process of weaving polymerization treatment and pressure curing treatment, the grid type discharge fibers and the foaming silica gel composition can be ingeniously polymerized, the strength is improved, and the high-density state is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic flow chart of a production method of an antistatic foaming silica gel plate composition.
The following detailed description will be further described in conjunction with the above-identified drawings.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the concepts underlying the described embodiments, however, it will be apparent to one skilled in the art that the described embodiments may be practiced without some or all of these specific details, and in other cases well-known process steps have not been described in detail.
Example 1
As shown in fig. 1, an antistatic foamed silica gel sheet composition comprises the following components in parts by weight:
80 parts of silicon rubber
Foaming agent 4 parts
Vulcanizing agent 2 parts
4 parts of external coating type antistatic agent
Internal mixing type antistatic agent 5 parts
5 parts of discharge fiber
The foaming agent comprises the following components in parts by weight:
40 parts of azobisisobutyronitrile
40 parts of methyl vinyl silicone rubber
Vinyl silicone oil 20 parts
The vulcanizing agent comprises the following components in parts by weight:
50 portions of dibenzoyl peroxide
50 parts of methyl vinyl silicone rubber
The external coating type antistatic agent comprises the following components in parts by weight:
alkyl quaternary ammonium salt 40 parts
Chloride 40 parts
20 parts of resin adhesive
The internal mixing type antistatic agent comprises the following components in parts by weight:
35 portions of phosphoric acid
65 parts of dithiocarbamate
The discharge fiber comprises the following components in parts by weight:
75 parts of fabric
15 parts of graphite
Copper sulfide 7 parts
3 parts of polycarbonate.
The production method of the antistatic foaming silica gel plate composition comprises the steps of proportioning 80 parts of silicone rubber, 4 parts of foaming agent, 2 parts of vulcanizing agent and 5 parts of internal mixing type antistatic agent in proportion, stirring and mixing at high speed, wherein the foaming agent is 4 parts and the vulcanizing agent is 2 parts, so that the foaming requirement can be met only by standing for 10min, forming a foaming mixture, proportioning 15 parts of graphite, 7 parts of copper sulfide and 3 parts of polycarbonate in proportion, stirring at high speed to form a conductive mixture, mixing and weaving the conductive mixture and 75 parts of fabric by an adsorption method to form a fiber mixed fabric, weaving the fiber mixed fabric in a grid manner, wrapping the outer layer of the grid type fiber mixed fabric with the foaming mixture to form a foaming fiber mixed fabric mixture to be solidified, and pressurizing the foaming fiber mixed fabric mixture by an extruder, the mixture is formed into a high-density plate-shaped curing foaming fiber mixed-woven mixture, and then the external coating type antistatic agent is attached to the outer surface of the curing foaming fiber mixed-woven mixture in a spraying mode, so that the antistatic foaming silica gel plate composition is finally realized.
It should be noted that the ratio of the foaming agent to the vulcanizing agent in example 1 is high, which improves the foaming efficiency, and the ratio of the external coating type antistatic agent to the internal mixing type antistatic agent is also high, so that the antistatic effect is strong, the static accumulation is greatly reduced, and the antistatic agent is suitable for being applied in the environment with higher requirement on static resistance.
Example 2
As shown in fig. 1, an antistatic foamed silica gel sheet composition and a method for producing a foamed silica gel sheet comprise, in parts by weight:
90 parts of silicon rubber
Foaming agent 3 parts
Vulcanizing agent 1 part
2 parts of external coating type antistatic agent
2 parts of internal mixing type antistatic agent
2 parts of discharge fiber
The foaming agent comprises the following components in parts by weight:
60 parts of azobisisobutyronitrile
25 parts of methyl vinyl silicone rubber
15 parts of vinyl silicone oil
The vulcanizing agent comprises the following components in parts by weight:
70 portions of dibenzoyl peroxide
30 parts of methyl vinyl silicone rubber
The external coating type antistatic agent comprises the following components in parts by weight:
alkyl quaternary ammonium salt 60 parts
30 portions of chloride
Resin adhesive 10 parts
The internal mixing type antistatic agent comprises the following components in parts by weight:
70 portions of phosphoric acid
Dithiocarbamate 30 parts
The discharge fiber comprises the following components in parts by weight:
85 parts of fabric
8 portions of graphite
Copper sulfide 5 parts
2 parts of polycarbonate.
The production method of the antistatic foaming silica gel plate composition comprises the steps of proportioning 90 parts of silicone rubber, 3 parts of foaming agent, 1 part of vulcanizing agent and 2 parts of internal mixing type antistatic agent in proportion, stirring and mixing at a high speed, wherein the foaming agent is 3 parts and the vulcanizing agent is 1 part, standing for 20min to meet the foaming requirement to form a foaming mixture, proportioning 8 parts of graphite, 5 parts of copper sulfide and 2 parts of polycarbonate in proportion, stirring at a high speed to form a conductive mixture, mixing and weaving the conductive mixture and 85 parts of fabric by an adsorption method to form a fiber mixed fabric, weaving the fiber mixed fabric in a grid manner, wrapping the outer layer of the grid fiber mixed fabric with the foaming mixture to form a foaming fiber mixed fabric mixture to be solidified, and pressurizing the foaming fiber mixed fabric mixture by an extruder, the mixture is formed into a high-density plate-shaped curing foaming fiber mixed-woven mixture, and then the external coating type antistatic agent is attached to the outer surface of the curing foaming fiber mixed-woven mixture in a spraying mode, so that the antistatic foaming silica gel plate composition is finally realized.
In comparison with example 1, example 2 has a high silicone rubber content, so that the material has good elasticity, and a high fabric content, so that the material has high toughness and an antistatic effect, and is suitable for use in an environment with low antistatic requirements.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The antistatic foaming silica gel plate composition is characterized by comprising the following components in parts by weight:
80-90 parts of silicone rubber
3-4 parts of foaming agent
1-2 parts of vulcanizing agent
2-4 parts of external coating type antistatic agent
2-5 parts of internal mixing type antistatic agent
2-5 parts of discharge fiber
Wherein the foaming agent comprises the following components in parts by weight:
40-60 parts of azobisisobutyronitrile
25-40 parts of methyl vinyl silicone rubber
15-20 parts of vinyl silicone oil
The vulcanizing agent comprises the following components in parts by weight:
50-70 parts of dibenzoyl peroxide
30-50 parts of methyl vinyl silicone rubber
The external coating type antistatic agent comprises the following components in parts by weight:
40-60 parts of alkyl quaternary ammonium salt
30-40 parts of chloride
10-20 parts of resin adhesive
The internal mixing type antistatic agent comprises the following components in parts by weight:
35-70 parts of phosphoric acid
30-65 parts of dithiocarbamate
The discharge fiber comprises the following components in parts by weight:
75-85 parts of fabric
8-15 parts of graphite
5-7 parts of copper sulfide
2-3 parts of polycarbonate.
2. The antistatic foamed silicone sheet composition according to claim 1, comprising, in parts by weight:
80 parts of silicon rubber
Foaming agent 4 parts
Vulcanizing agent 2 parts
4 parts of external coating type antistatic agent
Internal mixing type antistatic agent 5 parts
5 parts of discharge fiber
Wherein the foaming agent comprises the following components in parts by weight:
40 parts of azobisisobutyronitrile
40 parts of methyl vinyl silicone rubber
Vinyl silicone oil 20 parts
The vulcanizing agent comprises the following components in parts by weight:
50 portions of dibenzoyl peroxide
50 parts of methyl vinyl silicone rubber
The external coating type antistatic agent comprises the following components in parts by weight:
alkyl quaternary ammonium salt 40 parts
Chloride 40 parts
20 parts of resin adhesive
The internal mixing type antistatic agent comprises the following components in parts by weight:
35 portions of phosphoric acid
65 parts of dithiocarbamate
The discharge fiber comprises the following components in parts by weight:
75 parts of fabric
15 parts of graphite
Copper sulfide 7 parts
3 parts of polycarbonate.
3. The antistatic foamed silicone sheet composition according to claim 1, comprising, in parts by weight:
90 parts of silicon rubber
Foaming agent 3 parts
Vulcanizing agent 1 part
2 parts of external coating type antistatic agent
2 parts of internal mixing type antistatic agent
2 parts of discharge fiber
Wherein the foaming agent comprises the following components in parts by weight:
60 parts of azobisisobutyronitrile
25 parts of methyl vinyl silicone rubber
15 parts of vinyl silicone oil
The vulcanizing agent comprises the following components in parts by weight:
70 portions of dibenzoyl peroxide
30 parts of methyl vinyl silicone rubber
The external coating type antistatic agent comprises the following components in parts by weight:
alkyl quaternary ammonium salt 60 parts
30 portions of chloride
Resin adhesive 10 parts
The internal mixing type antistatic agent comprises the following components in parts by weight:
70 portions of phosphoric acid
Dithiocarbamate 30 parts
The discharge fiber comprises the following components in parts by weight:
85 parts of fabric
8 portions of graphite
Copper sulfide 5 parts
2 parts of polycarbonate.
4. The method for producing the antistatic foamed silica gel sheet composition according to claim 3, wherein the method comprises the steps of:
step (1), base material preparation treatment: proportioning silicon rubber, a foaming agent, a vulcanizing agent and an internal mixing type antistatic agent in proportion, and stirring and mixing at a high speed to form a foamed mixture;
step (2) fiber mixed weaving treatment: firstly, proportioning graphite, copper sulfide and polycarbonate in proportion, stirring at a high speed to form a conductive mixture, and then mixing and weaving the conductive mixture and a fabric by an adsorption method to form a fiber mixed fabric;
step (3), knitting polymerization treatment: firstly, carrying out grid weaving on the fiber mixed fabric in the step (2), and then wrapping the mixture foamed in the step (1) on the outer layer of the grid fiber mixed fabric to form a foamed fiber mixed fabric mixture to be cured;
and (4) pressurizing and curing treatment: pressurizing the foamed fiber mixed and woven mixture in the step (3) by an extruder to form a high-density plate-shaped solidified foamed fiber mixed and woven mixture;
step (5), coating antistatic treatment: and (4) attaching an external coating type antistatic agent to the outer surface of the cured foaming fiber mixed mixture in the step (4) in a spraying manner, and finally realizing the antistatic foaming silica gel plate composition.
5. The method for producing the antistatic foamed silica gel sheet composition according to claim 4, wherein in the step (1), the silicone rubber, the foaming agent and the vulcanizing agent are stirred at a high speed in advance, and after standing for 10-20 min, the inner mixing type antistatic agent is poured into the mixture for stirring again.
6. The method for producing an antistatic foamed silica gel sheet composition according to claim 4, wherein the internal mixing type antistatic agent in the step (1) is formed by mixing phosphoric acid and dithiocarbamate.
7. The method for producing an antistatic foamed silica gel sheet composition according to claim 4, wherein the lattice-type knitting in the step (3) is composed of a plurality of fiber mixed knits crisscrossed and interpenetrated with each other on the same plane.
8. The method for producing an antistatic foamed silicone rubber sheet composition according to claim 4, wherein the step (4) is followed by polishing the outer surface of the cured foamed fiber-mixed mixture to expose a part of the fabric of the fiber-mixed mixture inside.
9. The method for producing an antistatic foamed silica gel sheet composition according to claim 8, wherein the external antistatic agent in the step (5) is formed by mixing alkyl quaternary ammonium salt, chloride and resin adhesive, and can be attached to the partially exposed outer surface of the fabric of the fiber mixed fabric to cover the film.
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