CN112812480A - Preparation process of easy-demoulding high-strength anti-static organic glass - Google Patents
Preparation process of easy-demoulding high-strength anti-static organic glass Download PDFInfo
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- CN112812480A CN112812480A CN202110099377.7A CN202110099377A CN112812480A CN 112812480 A CN112812480 A CN 112812480A CN 202110099377 A CN202110099377 A CN 202110099377A CN 112812480 A CN112812480 A CN 112812480A
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- organic glass
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- silicone oil
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/10—Homopolymers or copolymers of methacrylic acid esters
- C08L33/12—Homopolymers or copolymers of methyl methacrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a preparation process of high-strength anti-static organic glass easy to demould, which is characterized in that an additive with the mass ratio of methoxymethyl triphenyl phosphonium chloride to amino silicone oil to N-methylaniline being 2-4: 8-10: 1-2 is added into the organic glass, so that the surface friction coefficient of the organic glass is reduced, the binding force between the organic glass and a mould is reduced, and the demoulding is easy; meanwhile, the crosslinking degree, the strength and the flame retardant property of the organic glass can be improved, the surface resistivity of the organic glass is reduced, and the antistatic capability of the organic glass is improved.
Description
Technical Field
The invention relates to a preparation process of organic glass, in particular to a preparation process of easy-demoulding high-strength anti-static organic glass.
Background
The organic glass is a popular name of polymethyl methacrylate, is abbreviated as PMMA and is a high molecular compound polymerized by methyl methacrylate, can transmit more than 92 percent of sunlight, has higher mechanical strength, certain heat resistance and cold resistance, corrosion resistance, good insulating property, stable size and easy molding; organic glass has better performance, has the advantages of light, beautiful and tough appearance, easy cleaning, easy processing, beautiful color, higher surface hardness and luster, good chemical corrosion resistance, high transparency, stable physical performance and the like, is widely applied to the fields of buildings, chemical engineering, industry, advertisements and the like, can be applied to lamps, instrument parts, optical lenses, ornaments and the like, and has wide application.
When the traditional organic glass is produced at present, a pouring gate system needs to be precisely designed due to the large friction coefficient and the large binding force between the organic glass and a mold; particularly, under the condition of smaller demoulding inclination, the demoulding difficulty is increased, the risk of defective products is increased, and the production of the organic glass is extremely unfavorable.
Disclosure of Invention
The invention develops a preparation process of easy-demoulding high-strength antistatic organic glass, which improves the strength of the organic glass, reduces the surface resistivity of the organic glass and reduces the combustion grade while reducing the surface friction coefficient.
A preparation process of easy-demoulding high-strength antistatic organic glass comprises the following steps:
(1) mixing
Firstly heating PMMA particles at 80-90 ℃ for 3-4 h to remove water, and then heating to 250-270 ℃ for melting; after the melting is finished, adding an additive accounting for 1.0-1.5% of the mass of PMMA particles, wherein the additive is a mixture of methoxymethyl triphenyl phosphonium chloride, amino silicone oil and N-methylaniline according to the mass ratio of 2-4: 8-10: 1-2, uniformly dispersing, and aging for 40-60 min to obtain a PMMA melt;
(2) plate making
And extruding the prepared PMMA melt into a mold for molding to obtain the organic glass.
Further, the mass ratio of the additive methoxy methyl triphenyl phosphonium chloride to the amino silicone oil to the N-methylaniline in the step (1) is optimized to be 3:9: 1.
Further, the amino silicone oil in the additive in the step (1) is one or more of watt WR1100, WR1200 and WR 1300.
Further, in the plate manufacturing process in the step (2), the temperature of the mould is controlled to be 60-80 ℃.
Further, in the plate manufacturing process in the step (2), the cooling rate of the organic glass is controlled to be 15-25 ℃/min.
The organic glass prepared by the invention has low surface friction coefficient, small binding force with a die and easy demoulding; meanwhile, the crosslinking degree is improved, the mechanical strength is high, the surface resistivity is reduced, and the antistatic effect is achieved; while reducing the combustion rating.
The invention has the advantages that:
1. according to the invention, the additive with the mass ratio of the methoxy methyl triphenyl phosphine chloride to the amino silicone oil to the N-methylaniline being 2-4: 8-10: 1-2 is added into the organic glass, so that the surface friction coefficient of the organic glass is reduced, the binding force between the organic glass and a mold is reduced, and the demolding is easy; particularly, under the condition of smaller demoulding inclination, the effect of reducing defective products caused by demoulding is more obvious;
2. the invention can improve the strength of the organic glass, reduce the surface resistivity of the organic glass and improve the antistatic capability of the organic glass;
3. the invention can reduce the burning grade of the organic glass, and the safety performance of the organic glass in the links of storage, transportation, use and the like is higher.
Detailed Description
Example 1
A preparation process of easy-demoulding high-strength antistatic organic glass comprises the following steps:
(1) mixing
Firstly heating PMMA particles at 80 ℃ for 4h to remove water, and then heating to 250 ℃ for melting; after the melting is finished, adding an additive accounting for 1.0 percent of the mass of the PMMA particles, wherein the additive is a mixture of methoxymethyl triphenyl phosphonium chloride, amino silicone oil and N-methylaniline according to the mass ratio of 2:10:1, uniformly dispersing, and aging for 40min to obtain a PMMA melt;
(2) plate making
And extruding the prepared PMMA melt into a mold for molding to obtain the organic glass.
The amino silicone oil in the additive in the step (1) is Wacker WR 1100.
And (3) controlling the temperature of the die to be 60 ℃ in the plate manufacturing process in the step (2).
And (3) in the plate manufacturing process in the step (2), the cooling rate of the organic glass is controlled at 15 ℃/min.
Example 2
A preparation process of easy-demoulding high-strength antistatic organic glass comprises the following steps:
(1) mixing
Firstly heating PMMA particles at 85 ℃ for 4h to remove water, and then heating to 260 ℃ for melting; after the melting is finished, adding an additive accounting for 1.2% of the mass of the PMMA particles, wherein the additive is a mixture of methoxymethyl triphenyl phosphonium chloride, amino silicone oil and N-methylaniline according to the mass ratio of 3:9:1, uniformly dispersing, and aging for 50min to obtain a PMMA melt;
(2) plate making
And extruding the prepared PMMA melt into a mold for molding to obtain the organic glass.
The amino silicone oil in the additive in the step (1) is Wacker WR 1200.
And (3) controlling the temperature of the die to be 70 ℃ in the plate manufacturing process in the step (2).
And (3) in the plate manufacturing process in the step (2), the cooling rate of the organic glass is controlled at 20 ℃/min.
Example 3
A preparation process of easy-demoulding high-strength antistatic organic glass comprises the following steps:
(1) mixing
Firstly heating PMMA particles at 90 ℃ for 3h to remove water, and then heating to 270 ℃ for melting; after the melting is finished, adding an additive accounting for 1.5 percent of the mass of the PMMA particles, wherein the additive is a mixture of methoxymethyl triphenyl phosphonium chloride, amino silicone oil and N-methylaniline according to the mass ratio of 4:8:2, uniformly dispersing, and aging for 60min to obtain a PMMA melt;
(2) plate making
And extruding the prepared PMMA melt into a mold for molding to obtain the organic glass.
The amino silicone oil in the additive in the step (1) is Wacker WR 1300.
And (3) controlling the temperature of the die to be 80 ℃ in the plate manufacturing process in the step (2).
And (3) in the plate manufacturing process in the step (2), the cooling rate of the organic glass is controlled at 25 ℃/min.
Example 4
A preparation process of easy-demoulding high-strength antistatic organic glass comprises the following steps:
(1) mixing
Firstly heating PMMA particles at 70 ℃ for 5h to remove water, and then heating to 280 ℃ for melting; after the melting is finished, adding an additive accounting for 0.8 percent of the mass of the PMMA particles, wherein the additive is a mixture of methoxymethyl triphenyl phosphonium chloride, amino silicone oil and N-methylaniline according to the mass ratio of 5:7:3, uniformly dispersing, and aging for 30min to obtain a PMMA melt;
(2) plate making
And extruding the prepared PMMA melt into a mold for molding to obtain the organic glass.
The amino silicone oil in the additive in the step (1) is Wacker WR 1200.
And (3) controlling the temperature of the die to be 50 ℃ in the plate manufacturing process in the step (2).
And (3) in the plate manufacturing process in the step (2), the cooling rate of the organic glass is controlled at 30 ℃/min.
Comparative example 1
The organic glass is directly prepared from PMMA particles, and the plate preparation process is the same as that of the example 2.
Comparative example 2
The preparation process of organic glass is the same as that in the step (2), the temperature of the mold is controlled at 50 ℃ in the plate making process, and the rest is the same as that in the example 2.
Comparative example 3
The preparation process of organic glass is the same as that in the step (2), the temperature lowering rate of organic glass is controlled at 30 deg.c/min.
Comparative example 4
A preparation process of organic glass comprises the following mixing processes in the step (1): firstly heating PMMA particles at 70 ℃ for 5h to remove water, and then heating to 280 ℃ for melting; after the melting is finished, adding an additive accounting for 0.8 percent of the mass of the PMMA particles, wherein the additive is a mixture of methoxymethyl triphenyl phosphonium chloride, amino silicone oil and N-methylaniline according to the mass ratio of 5:7:3, uniformly dispersing, and aging for 30min to obtain a PMMA melt; the rest is the same as example 2.
Comparative example 5
The preparation process of organic glass is the same as that in example 2 except that the additive is a mixture of amino silicone oil and N-methylaniline in a mass ratio of 9: 1.
Comparative example 6
A preparation process of organic glass is carried out by mixing methoxy methyl triphenyl phosphonium chloride and N-methylaniline with mass ratio of 3:1 as additive, and carrying out the same procedures as in example 2.
Comparative example 7
The preparation process of organic glass is the same as that in example 2 except that the additive is a mixture of methoxy methyl triphenyl phosphonium chloride and amino silicone oil in the mass ratio of 3: 9.
Comparative example 8
The preparation process of organic glass is the same as that in example 2 except that the additive is a mixture of methoxy methyl triphenyl phosphonium chloride, amino silicone oil and N-methylaniline in the mass ratio of 5:7: 3.
Comparative example 9
A preparation process of organic glass is carried out by mixing methoxy methyl triphenyl phosphonium chloride, amino silicone oil and N-methylaniline with mass ratio of 1:11:0.8 as additive, and carrying out the same procedures as in example 2.
Comparative example 10
The process for preparing organic glass is the same as that of example 2 except that the addition of additives is not followed by aging.
Detection and analysis:
the organic glass prepared by the above examples and comparative examples has a uniform thickness of 8 mm. According to the measuring method of GB/T1040-2018 'determination of tensile property of plastics', the tensile strength of the organic glass prepared in each example and the comparative example under the normal temperature condition is tested; according to a GB10006-88 plastic friction coefficient determination method, the dynamic friction coefficient of the organic glass prepared in each embodiment and the comparative example under the normal temperature condition is tested; the organic glass prepared in each example and comparative example was tested for flammability performance according to the test method of UL94-2013 flammability test of Plastic materials for Equipment and appliance parts, with a sample size of 125mm 13mm 8mm and flame retardancy grades increasing from HB, V-2, V-1, V-0; the organic glass prepared in each example and comparative example was tested for surface resistivity according to the test method of GB/T1410-2006 test method for volume resistivity and surface resistivity of solid insulating material.
The organic glass surface friction coefficient can be effectively reduced by adding the additive with the mass ratio of the methoxymethyl triphenyl phosphonium chloride to the amino silicone oil to the N-methylaniline being 2-4: 8-10: 1-2 into the organic glass, so that the binding force between the organic glass and a mold is reduced, and the demolding is easy; meanwhile, the crosslinking degree and strength of the organic glass can be improved, the surface resistivity of the organic glass is reduced, and the antistatic capability of the organic glass is improved; the invention can improve the flame retardant property of the organic glass, and ensure that the safety performance of the organic glass in the links of storage, transportation, use and the like is higher.
And finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (6)
1. A preparation process of easy-demoulding high-strength antistatic organic glass is characterized by comprising the following steps of: the preparation process comprises the following steps:
(1) mixing
Firstly heating PMMA particles at 80-90 ℃ for 3-4 h to remove water, and then heating to 250-270 ℃ for melting; after the melting is finished, adding an additive accounting for 1.0-1.5% of the mass of PMMA particles, wherein the additive is a mixture of methoxymethyl triphenyl phosphonium chloride, amino silicone oil and N-methylaniline according to the mass ratio of 2-4: 8-10: 1-2, uniformly dispersing, and aging for 40-60 min to obtain a PMMA melt;
(2) plate making
And extruding the prepared PMMA melt into a mold for molding to obtain the organic glass.
2. The process for preparing the easy-demolding high-strength antistatic organic glass as claimed in claim 1, wherein the process comprises the following steps: the mass ratio of the additive methoxy methyl triphenyl phosphonium chloride to the amino silicone oil to the N-methylaniline in the step (1) is 3:9: 1.
3. A process for preparing the easy-to-release high-strength antistatic organic glass as claimed in claim 1 or 2, wherein: in the mixing process of the step (1), the amino silicone oil in the additive is one or more of Wacker WR1100, WR1200 and WR 1300.
4. A process for preparing the easy-to-release high-strength antistatic organic glass as claimed in claim 1 or 2, wherein: in the plate manufacturing process in the step (2), the temperature of the die is controlled to be 60-80 ℃.
5. A process for preparing the easy-to-release high-strength antistatic organic glass as claimed in claim 1 or 2, wherein: in the plate manufacturing process in the step (2), the cooling rate of the organic glass is controlled to be 15-25 ℃/min.
6. An organic glass prepared by the process for preparing the easy-demoulding high-strength anti-static organic glass as claimed in claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110099377.7A CN112812480A (en) | 2021-01-25 | 2021-01-25 | Preparation process of easy-demoulding high-strength anti-static organic glass |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110099377.7A CN112812480A (en) | 2021-01-25 | 2021-01-25 | Preparation process of easy-demoulding high-strength anti-static organic glass |
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| CN112812480A true CN112812480A (en) | 2021-05-18 |
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| CN202110099377.7A Withdrawn CN112812480A (en) | 2021-01-25 | 2021-01-25 | Preparation process of easy-demoulding high-strength anti-static organic glass |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104403250A (en) * | 2014-11-28 | 2015-03-11 | 上海锦湖日丽塑料有限公司 | Methyl methacrylate resin with excellent thermal stability |
| CN109369843A (en) * | 2018-11-14 | 2019-02-22 | 安徽新涛光电科技有限公司 | A kind of preparation process of antistatic organic glass |
| CN111825790A (en) * | 2020-07-22 | 2020-10-27 | 安徽新涛光电科技有限公司 | Non-transparent high-heat-resistant flame-retardant acrylic plate and preparation method thereof |
-
2021
- 2021-01-25 CN CN202110099377.7A patent/CN112812480A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104403250A (en) * | 2014-11-28 | 2015-03-11 | 上海锦湖日丽塑料有限公司 | Methyl methacrylate resin with excellent thermal stability |
| CN109369843A (en) * | 2018-11-14 | 2019-02-22 | 安徽新涛光电科技有限公司 | A kind of preparation process of antistatic organic glass |
| CN111825790A (en) * | 2020-07-22 | 2020-10-27 | 安徽新涛光电科技有限公司 | Non-transparent high-heat-resistant flame-retardant acrylic plate and preparation method thereof |
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Application publication date: 20210518 |