CN110746542A - Antistatic PMMA pouring plate and manufacturing method thereof - Google Patents
Antistatic PMMA pouring plate and manufacturing method thereof Download PDFInfo
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- CN110746542A CN110746542A CN201911080698.1A CN201911080698A CN110746542A CN 110746542 A CN110746542 A CN 110746542A CN 201911080698 A CN201911080698 A CN 201911080698A CN 110746542 A CN110746542 A CN 110746542A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
- C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
- C08F265/06—Polymerisation of acrylate or methacrylate esters on to polymers thereof
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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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/12—Esters; Ether-esters of cyclic polycarboxylic acids
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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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
- C08K5/19—Quaternary ammonium compounds
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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
- C08K2201/00—Specific properties of additives
- C08K2201/017—Additives being an antistatic agent
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses an antistatic PMMA casting plate and a manufacturing method thereof, and relates to the technical field of casting plate manufacturing, wherein the antistatic PMMA casting plate comprises the following components in parts by weight: 83-85 parts of methyl methacrylate prepolymer, 10 parts of methyl methacrylate, 3-5 parts of plasticizer DOP, 0.03-0.05 part of lauroyl peroxide, 0.2-0.3 part of dodecyl trimethyl ammonium chloride and 0.4-0.5 part of cosolvent, wherein during preparation, a certain amount of methyl methacrylate, dodecyl trimethyl ammonium chloride and cosolvent are uniformly stirred and mixed for later use, a certain amount of methyl methacrylate prepolymer, plasticizer and lauroyl peroxide are stirred and mixed, the mixture prepared in the previous step is poured, stirred and mixed, filtered and vacuum defoamed, and finally the mixture is poured into a mold for molding.
Description
Technical Field
The invention relates to the technical field of casting plate manufacturing, in particular to an antistatic PMMA casting plate and a manufacturing method thereof.
Background
PMMA is a thermoplastic polymer material, has the advantages of good heat resistance, high hardness, high light transmittance, strong ultraviolet resistance and the like, and is widely applied to the fields of decoration, bathroom, optics and the like. The surface resistivity of PMMA was 1015In the above, when friction, traction, compression, peeling are received, charges are easily accumulated on the surface of the material, and the electrostatic field generated when a large amount of charges are accumulated can cause interference to the operation of the electronic product or absorb the chargesThe conventional PMMA board can not meet the use requirements in the occasions sensitive to static electricity, such as semiconductor industry, LCD industry, electronic and electrical industry, optical manufacturing, communication manufacturing, precision instruments, electronic equipment and microelectronic equipment industry, medical industry, bioengineering and the like because of attaching dust in the air.
According to the requirements in GB 50174 plus 2008 electronic information system machine room design Specification, the surface resistivity of the PMMA plate is 106-109The conventional technical means is to carry out secondary processing on the PMMA plate and carry out vacuum coating on the surface to reduce the surface resistivity. When vacuum coating is adopted, the surface of the plate needs to be treated firstly, then one side or two sides of the plate are coated according to requirements, the process can generate certain quality defects such as scratches, uneven coating and the like on the surface of the plate, the coating cost is higher, meanwhile, the production and manufacturing period of the plate is prolonged, and the production efficiency of the plate is reduced. The literature reports that the antistatic property of the plate is realized by adding an antistatic agent into a prepolymer, but the market has few products in circulation, and the main reason is that the quality defect is brought to the finished plate in the process of using the antistatic agent, the yield of the product is low, and the quality is unstable, so that a PMMA plate which has both the antistatic property and high yield and high quality is required to be prepared.
Therefore, it is a realistic meaning for those skilled in the art how to solve the above technical problems.
Disclosure of Invention
The invention aims to: in order to solve the technical problem, the invention provides an antistatic PMMA cast plate and a manufacturing method thereof.
The invention specifically adopts the following technical scheme for realizing the purpose:
an antistatic PMMA pouring plate comprises the following components in parts by weight:
83-85 parts of methyl methacrylate prepolymer;
10 parts of methyl methacrylate;
3-5 parts of plasticizer DOP;
0.03-0.05 part of lauroyl peroxide;
0.2-0.3 part of dodecyl trimethyl ammonium chloride;
0.4-0.5 part of cosolvent.
Furthermore, the cosolvent is trimethylolpropane or hydroxyethyl acrylate.
The manufacturing method of the antistatic PMMA cast plate comprises the following steps:
s1: weighing 10 parts of methyl methacrylate, 0.2-0.3 part of dodecyl trimethyl ammonium chloride and 0.4-0.5 part of cosolvent, and uniformly stirring and mixing for later use;
s2: weighing 83-85 parts of methyl methacrylate prepolymer, 3-5 parts of plasticizer DOP3 and 0.03-0.05 part of lauroyl peroxide, stirring and mixing for 5min, slowly pouring the mixture prepared in the step S1 into the mixture, and stirring and mixing for 30 min;
s3: filtering the slurry stirred in the step S2 through 250-mesh filter cloth, and then performing vacuum defoamation for 30min, wherein the vacuum degree is 0.08-0.09 MPa;
s4: pouring a certain weight of the mixture prepared in the step S3 into a glass mold for molding;
s5: placing the prepared mould into a water tank for prepolymerization, wherein the temperature of the water tank is 55-60 ℃, checking the hardness by using a needle, the reaction end point is the time when the needle cannot penetrate into the plate, transferring the mould into a high-temperature furnace for polymerization when the hardness reaches, and the temperature of the high-temperature furnace is 115-120 ℃, and the time is 3-4 h.
Further, in step S4, the molding gauge is (2-5) mm 1200mm 2400mm, and a soft PVC strip with a diameter of 2.9-3.5mm is used as the sealing strip.
The invention has the following beneficial effects:
the antistatic PMMA cast plate produced by the invention has the same antistatic property as the plate produced by the existing coating process, the coating is to coat a layer of conductive material on the surface of the plate to lead the static electricity generated by the plate to be conducted out in time, the method adopts a method of doping a cationic compound to achieve the same effect, dodecyl trimethyl ammonium chloride is a cationic salt used as an antistatic agent, the dodecyl trimethyl ammonium chloride has certain solubility in PMMA monomer, the existence of a cosolvent can further promote the dissolution, the uniform distribution in the plate in the production process is ensured, and the cations in the plate can form a conductive path to conduct the charges in time to play the antistatic role.
According to the antistatic PMMA casting plate, the pool polymerization time and the high-temperature furnace time are consistent with those of a conventional plate, the plate has the function of conducting electric charges, the influence of static electricity on the product quality in the plate release and packaging processes can be eliminated, the produced finished plate has the antistatic property after the conventional plate is coated, and the influence on the yield in the coating process is avoided.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention that are generally shown herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The following examples further describe the invention in detail in order that those skilled in the art may better understand the invention.
Example 1
The embodiment provides an antistatic PMMA casting plate which comprises the following components in parts by weight:
83-85 parts of methyl methacrylate prepolymer;
10 parts of methyl methacrylate;
3-5 parts of plasticizer DOP;
0.03-0.05 part of lauroyl peroxide;
0.2-0.3 part of dodecyl trimethyl ammonium chloride;
0.4-0.5 part of cosolvent.
Furthermore, the cosolvent is trimethylolpropane or hydroxyethyl acrylate.
In the implementation, dodecyl trimethyl ammonium chloride is a cationic salt and is used as an antistatic agent, the dodecyl trimethyl ammonium chloride has certain solubility in a PMMA monomer, the existence of a cosolvent can further promote the dissolution, the uniform distribution in the plate in the production process is ensured, and cations in the plate can form a conductive path so as to timely conduct charges to play an antistatic role.
Example 2
The embodiment provides a manufacturing method of an antistatic PMMA cast plate, which comprises the following steps:
s1: weighing 10 parts of methyl methacrylate, 0.2 part of dodecyl trimethyl ammonium chloride and 0.4 part of cosolvent, and uniformly stirring and mixing for later use;
s2: weighing 83 parts of methyl methacrylate prepolymer, 3 parts of plasticizer DOP3 parts and 0.03 part of lauroyl peroxide, stirring and mixing for 5min, slowly pouring the mixture prepared in the step S1 into the mixture, and stirring and mixing for 30 min;
s3: filtering the slurry stirred in the step S2 through 250-mesh filter cloth, and then performing vacuum defoamation for 30min, wherein the vacuum degree is 0.08 MPa;
s4: pouring a certain weight of the mixture prepared in the step S3 into a glass mold for molding;
s5: placing the prepared mould into a water tank for prepolymerization, wherein the temperature of the water tank is 55 ℃, checking the hardness by using a needle, the reaction end point is the time when the needle cannot penetrate into a plate, transferring the mould into a high-temperature furnace for polymerization when the hardness reaches, and the temperature of the high-temperature furnace is 115 ℃ for 3 hours.
Further, in step S4, the mold was 2mm × 1200mm × 2400mm, and a soft PVC rubber strip having a diameter of 2.9mm was used as the sealing rubber strip.
Example 3
The embodiment provides a manufacturing method of an antistatic PMMA cast plate, which comprises the following steps:
s1: weighing 10 parts of methyl methacrylate, 0.22 part of dodecyl trimethyl ammonium chloride and 0.4 part of cosolvent, and uniformly stirring and mixing for later use;
s2: weighing 84 parts of methyl methacrylate prepolymer, 5 parts of plasticizer DOP5 parts and 0.05 part of lauroyl peroxide, stirring and mixing for 5min, slowly pouring the mixture prepared in the step S1 into the mixture, and stirring and mixing for 30 min;
s3: filtering the slurry stirred in the step S2 through 250-mesh filter cloth, and then performing vacuum defoamation for 30min, wherein the vacuum degree is 0.09 MPa;
s4: pouring a certain weight of the mixture prepared in the step S3 into a glass mold for molding;
s5: placing the prepared mould into a water tank for prepolymerization, wherein the temperature of the water tank is 56 ℃, checking the hardness by using a needle, the reaction end point is when the needle cannot penetrate into a plate, transferring the mould into a high-temperature furnace for polymerization when the hardness is up to 117 ℃, and the time is 3 hours.
Further, in step S4, the mold was 2.5mm 1200mm 2400mm, and a soft PVC rubber strip having a diameter of 3mm was used as the sealing rubber strip.
Example 4
The embodiment provides a manufacturing method of an antistatic PMMA cast plate, which comprises the following steps:
s1: weighing 10 parts of methyl methacrylate, 0.23 part of dodecyl trimethyl ammonium chloride and 0.4 part of cosolvent, and uniformly stirring and mixing for later use;
s2: weighing 85 parts of methyl methacrylate prepolymer, 5 parts of plasticizer DOP, and 0.04 part of lauroyl peroxide, stirring and mixing for 5min, slowly pouring the mixture prepared in the step S1 into the mixture, and stirring and mixing for 30 min;
s3: filtering the slurry stirred in the step S2 through 250-mesh filter cloth, and then performing vacuum defoamation for 30min, wherein the vacuum degree is 0.08 MPa;
s4: pouring a certain weight of the mixture prepared in the step S3 into a glass mold for molding;
s5: placing the prepared mould into a water tank for prepolymerization, wherein the temperature of the water tank is 57 ℃, checking the hardness by using a needle, the reaction end point is when the needle cannot penetrate into a plate, transferring the mould into a high-temperature furnace for polymerization when the hardness is up to 118 ℃, and the time is 3 hours.
Further, in step S4, the molding gauge was 3mm × 1200mm × 2400mm, and a soft PVC rubber strip having a diameter of 3.2mm was used as the sealing rubber strip.
Example 5
The embodiment provides a manufacturing method of an antistatic PMMA cast plate, which comprises the following steps:
s1: weighing 10 parts of methyl methacrylate, 0.25 part of dodecyl trimethyl ammonium chloride and 0.5 part of cosolvent, and uniformly stirring and mixing for later use;
s2: weighing 85 parts of methyl methacrylate prepolymer, 5 parts of plasticizer DOP, and 0.03 part of lauroyl peroxide, stirring and mixing for 5min, slowly pouring the mixture prepared in the step S1 into the mixture, and stirring and mixing for 30 min;
s3: filtering the slurry stirred in the step S2 through 250-mesh filter cloth, and then performing vacuum defoamation for 30min, wherein the vacuum degree is 0.09 MPa;
s4: pouring a certain weight of the mixture prepared in the step S3 into a glass mold for molding;
s5: placing the prepared mould into a water tank for prepolymerization, wherein the temperature of the water tank is 58 ℃, checking the hardness by using a needle, the reaction end point is when the needle cannot penetrate into a plate, transferring the mould into a high-temperature furnace for polymerization when the hardness is up to 118 ℃, and the time is 4 hours.
Further, in step S4, the mold was set to 4mm × 1200mm × 2400mm, and a soft PVC rubber strip having a diameter of 3.4mm was used as the sealing rubber strip.
Example 6
The embodiment provides a manufacturing method of an antistatic PMMA cast plate, which comprises the following steps:
s1: weighing 10 parts of methyl methacrylate, 0.3 part of dodecyl trimethyl ammonium chloride and 0.5 part of cosolvent, and uniformly stirring and mixing for later use;
s2: weighing 85 parts of methyl methacrylate prepolymer, 5 parts of plasticizer DOP, and 0.05 part of lauroyl peroxide, stirring and mixing for 5min, slowly pouring the mixture prepared in the step S1 into the mixture, and stirring and mixing for 30 min;
s3: filtering the slurry stirred in the step S2 through 250-mesh filter cloth, and then performing vacuum defoamation for 30min, wherein the vacuum degree is 0.09 MPa:
s4: pouring a certain weight of the mixture prepared in the step S3 into a glass mold for molding;
s5: placing the prepared mould into a water tank for prepolymerization, wherein the temperature of the water tank is 60 ℃, checking the hardness by using a needle, the reaction end point is the time when the needle cannot penetrate into a plate, transferring the mould into a high-temperature furnace for polymerization when the hardness reaches, and the temperature of the high-temperature furnace is 120 ℃ for 4 hours.
Further, in step S4, the mold was 5mm × 1200mm × 2400mm, and a soft PVC rubber strip having a diameter of 3.5mm was used as the sealing rubber strip.
The performance test results of the prepared antistatic PMMA cast plate are shown in Table 1.
Table 1 antistatic PMMA cast plate performance test table
| Test index | Conventional sheet material | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 |
| Surface resistivity (omega) | 1016 | 108 | 108 | 108 | 108 | 108 |
| Tensile Strength (MPa) | 70 | 70 | 70 | 72 | 73 | 73 |
| Light transmittance | 93％ | 93％ | 93％ | 93％ | 93％ | 93％ |
The antistatic PMMA cast plate prepared by the method has certain improvement on tensile strength and surface resistivity, particularly the improvement on the surface resistivity is large, and the antistatic PMMA cast plate has the antistatic property and improves the quality.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all equivalent changes and modifications made by the description of the present invention should be covered by the protection scope of the present invention.
Claims (4)
1. The antistatic PMMA pouring plate is characterized by comprising the following components in parts by weight:
2. the antistatic PMMA casting board of claim 1, wherein the cosolvent is trimethylolpropane or hydroxyethyl acrylate.
3. The manufacturing method of the antistatic PMMA cast plate is characterized by comprising the following steps:
s1: weighing 10 parts of methyl methacrylate, 0.2-0.3 part of dodecyl trimethyl ammonium chloride and 0.4-0.5 part of cosolvent, and uniformly stirring and mixing for later use;
s2: weighing 83-85 parts of methyl methacrylate prepolymer, 3-5 parts of plasticizer DOP3 and 0.03-0.05 part of lauroyl peroxide, stirring and mixing for 5min, slowly pouring the mixture prepared in the step S1 into the mixture, and stirring and mixing for 30 min;
s3: filtering the slurry stirred in the step S2 through 250-mesh filter cloth, and then performing vacuum defoamation for 30min, wherein the vacuum degree is 0.08-0.09 MPa;
s4: pouring a certain weight of the mixture prepared in the step S3 into a glass mold for molding;
s5: placing the prepared mould into a water tank for prepolymerization, wherein the temperature of the water tank is 55-60 ℃, checking the hardness by using a needle, the reaction end point is the time when the needle cannot penetrate into the plate, transferring the mould into a high-temperature furnace for polymerization when the hardness reaches, and the temperature of the high-temperature furnace is 115-120 ℃, and the time is 3-4 h.
4. The method of claim 3, wherein in step S4, the mold is 2-5 mm 1200mm 2400mm, and a soft PVC strip with a diameter of 2.9-3.5mm is used as the sealing strip.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115260382A (en) * | 2022-08-23 | 2022-11-01 | 浙江工业大学 | Transparent antistatic PMMA material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001322669A (en) * | 2000-05-18 | 2001-11-20 | Sekisui Plastics Co Ltd | Olefin based resin foam for wrapping and manufacturing method thereof |
| CN110229259A (en) * | 2019-06-24 | 2019-09-13 | 苏州双象光学材料有限公司 | A kind of transparent antistatic PMMA and preparation method thereof |
| CN111499795A (en) * | 2020-05-07 | 2020-08-07 | 浙江展宇新材料有限公司 | Production process of PMMA monomer copolymerized organic glass |
-
2019
- 2019-11-07 CN CN201911080698.1A patent/CN110746542B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001322669A (en) * | 2000-05-18 | 2001-11-20 | Sekisui Plastics Co Ltd | Olefin based resin foam for wrapping and manufacturing method thereof |
| CN110229259A (en) * | 2019-06-24 | 2019-09-13 | 苏州双象光学材料有限公司 | A kind of transparent antistatic PMMA and preparation method thereof |
| CN111499795A (en) * | 2020-05-07 | 2020-08-07 | 浙江展宇新材料有限公司 | Production process of PMMA monomer copolymerized organic glass |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115260382A (en) * | 2022-08-23 | 2022-11-01 | 浙江工业大学 | Transparent antistatic PMMA material and preparation method thereof |
| CN115260382B (en) * | 2022-08-23 | 2024-02-13 | 浙江工业大学 | Transparent antistatic PMMA material and preparation method thereof |
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