CN118440233A - Composition for organic glass, preparation method of organic glass and aviation transparent part - Google Patents

Abstract

The application discloses a composition for organic glass, organic glass and a preparation method thereof, and an aviation transparent part, belonging to the technical field of common materials of aviation transparent parts. The composition comprises the following chemical components in parts by mass: methyl methacrylate: 40-60 parts; organic lead: 25-45 parts; organoboron: 5-15 parts; internal lubricant: 3-10 parts; crosslinking agent: 0.5 to 2 parts; catalyst: 0.01 to 0.05 part; the organic lead comprises saturated organic lead acid and unsaturated organic lead acid; the mass ratio of the saturated organic acid lead to the unsaturated organic acid lead is 1 (4-8); the organoboron is an unsaturated organoboric acid. The composition provided by the application is used for preparing organic glass, and is beneficial to improving the good consideration of various radiations.

Description

Composition for organic glass, preparation method of organic glass and aviation transparent part

Technical Field

The application relates to the field of common materials of aviation transparent parts, in particular to a composition for organic glass, a preparation method of the organic glass and the aviation transparent parts.

Background

High energy ionizing radiation, such as neutrons and gamma rays with a strong penetration force, has attracted increasing attention to the hazards posed by aircraft crewmembers, passengers and equipment.

The organic glass is a common material for transparent parts of an aircraft cabin due to good transparency and light weight, but has poor protection against high-energy ionizing radiation.

Disclosure of Invention

In order to overcome the defects or shortcomings in the prior art, the application aims to provide a composition for organic glass, a preparation method of the organic glass and an aviation transparent part. The composition provided by the application is used for preparing organic glass, and is beneficial to improving the good consideration of various radiations.

The application aims at realizing the following specific technical scheme:

in a first aspect, the application provides a composition for organic glass, which comprises the following chemical components in parts by mass:

Methyl methacrylate: 40-60 parts;

organic lead: 25-45 parts;

Organoboron: 5-15 parts;

internal lubricant: 3-10 parts;

crosslinking agent: 0.5 to 2 parts;

catalyst: 0.01 to 0.05 part;

The organic lead comprises saturated organic lead acid and unsaturated organic lead acid; the mass ratio between the saturated organic acid lead and the unsaturated organic acid lead is 1 (4-8);

The organoboron is an unsaturated organoboric acid.

In some embodiments of the application, the unsaturated organic acid lead comprises an acrylic lead monomer;

In some embodiments of the application, the acrylic lead monomer comprises at least one of lead acrylate, lead methacrylate, lead ethylacrylate;

In some embodiments of the application, the unsaturated organoboronic acid comprises at least one of inverse propenylboronic acid, 3-acrylamidophenylboronic acid.

In some embodiments of the application, the saturated organic acid lead comprises at least one of lead laurate, lead stearate;

in some embodiments of the application, the mass ratio between the saturated organic acid lead and the unsaturated organic acid lead is 1 (7-8);

in some embodiments of the application, the mass of the internal lubricant is 10% to 20% of the total mass of the organolead and the organoboron;

The internal lubricant comprises at least one of lauryl alcohol, myristyl alcohol, palmityl alcohol, stearyl alcohol, arachidyl alcohol, and behenyl alcohol.

In some embodiments of the application, the composition comprises the following chemical components in parts by mass:

Methyl methacrylate: 40-60 parts;

Unsaturated organic acid lead: 35-40 parts;

saturated organic acid lead: 5 parts;

unsaturated organoboric acid: 8-15 parts

Internal lubricant: 5-10 parts;

crosslinking agent: 0.5 to 2 parts;

Catalyst: 0.01 to 0.05 part;

ultraviolet absorber: 0.02 to 0.06 portions.

The second aspect of the application provides a preparation method of organic glass, comprising the following preparation processes:

Preparing a precursor solution A: according to the mass parts, 40 to 60 parts of methyl methacrylate, 25 to 45 parts of organic lead, 5 to 15 parts of organic boron and 3 to 10 parts of internal lubricant are uniformly mixed to obtain a precursor solution A;

Preparation of prepolymer B: adding 0.5-2 parts of cross-linking agent and 0.01-0.05 part of catalyst into the precursor solution A, and uniformly mixing to obtain a prepolymer B;

Providing a mold;

preparing an organic glass plate: transferring the prepolymer B into the die, performing preliminary polymerization, performing post-curing treatment, and taking out of the die after curing is finished to obtain the organic glass plate.

In some embodiments of the present application, in the preparation of prepolymer B, the preliminary polymerization is carried out in a water bath, the temperature of the water bath is controlled to be 55-65 ℃ for 20-24 hours;

preferably, the curing treatment comprises placing the mold in an oven at a temperature of 100-110 ℃ for 2-4 hours.

In some embodiments of the present application, in the preparation of the precursor solution a, the temperature is controlled to be 70 to 80 ℃ so that the precursor solution a is in a transparent state.

In a third aspect, the present application provides a plexiglass comprising the composition of the first aspect as a chemical starting material or produced by the production method of the second aspect.

A fourth aspect of the application provides an aerospace transparency comprising the plexiglass of the third aspect.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

Fig. 1 is a schematic diagram showing the organic glass sheet according to example 1 of the present application.

Fig. 2 is a schematic diagram showing the organic glass sheet according to example 1 of the present application.

Detailed Description

For a better understanding of the technical solution of the present application, the following detailed description of the embodiments of the present application refers to the accompanying drawings.

It should be understood that the described embodiments are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Definition of terms

In the present application, when the naming and structure of the compounds conflict, the structure of the compounds is subject.

All ranges cited herein are inclusive unless clearly indicated to the contrary.

The terms "a" or "an" are used herein to describe the elements and components described herein. This is done merely for convenience and to provide a general sense of the scope of the application. Such description should be understood to include one or at least one, and the singular also includes the plural unless it is obvious that it is meant otherwise. "plurality of" means two or more.

The numbers in the present application are approximations, by use of the antecedent "about" or "about" herein. The numerical values of the numbers may differ by 1%, 2%, 5%, 7%, 8%, 10%, etc. Whenever a number is disclosed having a value of N, any number having a value of N+/-1%, N+/-2%, N+/-3%, N+/-5%, N+/-7%, N+/-8% or N+/-10% will be explicitly disclosed, where "+/-" means plus or minus, and a range between N-10% and N+10% is also disclosed.

The hazards posed by high energy ionizing radiation, particularly neutrons and gamma rays, to aircraft crews, passengers and equipment have attracted considerable attention. The results of foreign studies indicate that the crew and passengers who frequently fly are exposed to a significantly higher radiation dose level than the average level for the altitude range of the commercial flight. And neutron radiation, for example, can produce induced radioactivity in most substances, including body tissues of the human body. For example, gamma rays (gamma rays) have extremely strong penetrability, when a human body is irradiated by the gamma rays, the gamma rays can enter the interior of the human body and generate ionization action with cells in the human body, and ions generated by ionization can erode complex organic molecules such as proteins, nucleic acids and enzymes, which are main components of living cell tissues, once the living cell tissues are destroyed, normal chemical processes in the human body are disturbed, and the cells can die and become cancerous seriously. It is therefore important to increase the level of protection of the aircraft material against radiation.

The organic glass is a common material for transparent parts of an aircraft cabin due to good transparency and light weight, but has poor protection against high-energy ionizing radiation. Lead is the best gamma-ray weakening material except uranium in the prior art, and researchers mainly introduce lead elements into the organic glass body structure so as to improve the radiation protection performance of the organic glass. Although the lead element is introduced to improve the radiation-proof capability of the organic glass, the high content of the lead element is limited to improve the radiation-proof efficiency of the organic glass, and meanwhile, the problem of poor optical performance and mechanical performance is brought about, so that the comprehensive performance of the organic glass cannot be considered friendly. In addition, as the shielding effectiveness of the lead element on X-rays and gamma-rays is strong, but the shielding effect on the neutron rays is weak, how to improve the compromise of the organic glass on various radiations is a technical problem which needs to be solved by the technicians in the field.

In order to solve the problems, the application provides a composition for organic glass, which comprises the following chemical components in parts by mass: methyl methacrylate: 40-60 parts; organic lead: 25-45 parts; organoboron: 5-15 parts; internal lubricant: 3-10 parts; crosslinking agent: 0.5 to 2 parts; catalyst: 0.01 to 0.05 part; the organic lead comprises saturated organic lead acid and unsaturated organic lead acid; the mass ratio of the saturated organic acid lead to the unsaturated organic acid lead is (4-8) 1; the organoboron is an unsaturated organoboric acid.

The methyl methacrylate monomer in the composition is used as a main raw material monomer for preparing the organic glass, and the monomer is easy to generate a crosslinking reaction with unsaturated organic acid lead in organic lead and unsaturated organic boric acid in organic boron under the actions of a crosslinking agent, a catalyst and the like, so that lead element and boron element are formed in a molecular chain at the same time, the compatibility of the lead element and the boron element in materials is improved, and the stability of the lead element and the boron element is also improved. Meanwhile, compared with the prior art, the lead element content in the material is increased, and the experimental research shows that if single unsaturated organic acid lead is used, the compatibility between the unsaturated organic acid lead and methyl methacrylate monomer is easily influenced when the content of the unsaturated organic acid lead is increased to match the requirement of the unsaturated organic acid lead on high-efficiency radiation-proof performance, so that the optical performance, mechanical performance and the like of the material are influenced. Further experiments show that on the premise of using a certain amount of unsaturated organic acid lead, saturated organic acid lead is added into the material to meet the high content requirement of lead element, meanwhile, an internal lubricant is additionally used, on one hand, the internal lubricant is used for promoting the compatibility between methyl methacrylate monomers, organic lead and organic boron, on the other hand, the internal lubricant plays a role in isolating and lubricating molecular chains generated by crosslinking, and mechanical properties of the material, such as toughness, impact strength and the like of the material, are improved by reducing friction among molecules.

In some embodiments, the mass ratio between the saturated organic acid lead and the unsaturated organic acid lead is 1 (4-8), so that the unsaturated organic acid lead is taken as the main organic lead for crosslinking with the methyl methacrylate monomer, and the mass ratio between the saturated organic acid lead and the unsaturated organic acid lead is controlled to be 1 (4-8) under the requirement of high lead content, which is beneficial to reducing the adverse effect of compatibility between the monomers.

In some embodiments, the unsaturated organic lead acid comprises a lead acrylate monomer. The acrylic lead monomer not only has unsaturated double bonds, but also contains molecular fragments with good compatibility with methyl methacrylate monomer under certain content.

In some embodiments, the lead acrylate monomer comprises at least one of lead acrylate, lead methacrylate, and lead ethylacrylate, and the present application selects the lead acrylate monomer to control the molecular weight of the lead acrylate monomer in these embodiments, and selects the low molecular weight lead acrylate monomer to match the methyl methacrylate monomer.

In some embodiments, the unsaturated organoboronic acid comprises at least one of inverse propenylboronic acid, 3-acrylamidophenylboronic acid. The type of unsaturated organoboric acid selected in these examples of the present application does not affect the crosslinking between the unsaturated organolead acid and the methyl methacrylate monomer, and also facilitates the crosslinking between itself and the methyl methacrylate monomer. In the embodiments of the application, the amount of the organolead and the amount of the organoboron can be flexibly adjusted according to the actual radiation requirements and the content of the reactive methyl methacrylate in the above proportion.

In some embodiments, the saturated organic acid lead comprises at least one of lead laurate, lead stearate. The present application selects lead laurate and/or lead stearate to be used in the examples, which are uniformly dispersed in the molecular chain containing lead element and boron element, and the structure or performance of the molecular chain is not affected.

In some embodiments, the mass ratio between the saturated organic acid lead and the unsaturated organic acid lead is 1 (7-8). The selection of the ratio used in these examples facilitates the screening of compositions for organic glass having good overall properties.

In some embodiments, the mass of the internal lubricant is 10% to 20% of the total mass of the organolead and organoboron. The application selects and controls the mass of the internal lubricant to be 10% -20% of the total mass of the organic lead and the organic boron, and selects proper content to obtain the composition for organic glass with good comprehensive performance.

In some embodiments, the internal lubricant comprises at least one of lauryl alcohol, myristyl alcohol, palmityl alcohol, stearyl alcohol, arachidyl alcohol, behenyl alcohol. The types of the internal lubricant and the use performances of the internal lubricant in the organic lead and the organic boron are also correlated, and the internal lubricant selected by the application is convenient for technical preparation and is beneficial to exerting the use performances of the internal lubricant in the organic lead and the organic boron.

In some embodiments, the composition for a plexiglass comprises the following chemical components in parts by mass: methyl methacrylate: 40-60 parts; unsaturated organic acid lead: 35-40 parts; saturated organic acid lead: 5 parts; unsaturated organoboric acid: 8-15 parts; internal lubricant: 5-10 parts; crosslinking agent: 0.5 to 2 parts; catalyst: 0.01 to 0.05 part; ultraviolet absorber: 0.02 to 0.06 portions. The cross-linking agent is used for ensuring the smooth occurrence of the cross-linking reaction, and the catalyst is used for promoting the cross-linking reaction. Ultraviolet absorbers are mainly used as light stabilizers.

In some embodiments, the crosslinking agent includes, but is not limited to, at least one of ethylene glycol dimethacrylate (EDMA), ethylene glycol dimethacrylate (DGDMA), triallyl isocyanurate (TAIC), and triallyl cyanurate (TAC). The application in the following specific examples preferably uses ethylene glycol dimethacrylate (EDMA).

In some embodiments, the catalyst includes, but is not limited to, at least one of Benzoyl Peroxide (BPO), azobisisobutyronitrile (AIBN), and Azobisisoheptonitrile (ABVN). The present application preferably uses Azobisisobutyronitrile (AIBN) in the subsequent embodiments.

In some embodiments, the ultraviolet absorber includes, but is not limited to, at least one of UV-327, UV-328, UV-360. The present application preferably uses UV-327 in the subsequent embodiments.

The second aspect of the application provides a preparation method of organic glass, comprising the following preparation processes:

Preparing a precursor solution A: according to the mass parts, 40 to 60 parts of methyl methacrylate, 25 to 45 parts of organic lead, 5 to 15 parts of organic boron and 3 to 10 parts of internal lubricant are uniformly mixed to obtain a precursor solution A;

Preparation of prepolymer B: adding 0.5-2 parts of cross-linking agent and 0.01-0.05 part of catalyst into the precursor solution A, and uniformly mixing to obtain a prepolymer B;

Providing a mold;

Preparing an organic glass plate: and transferring the prepolymer B into a mould, performing preliminary polymerization, performing curing treatment, and taking out of the mould after curing is finished to obtain the organic glass plate.

In some embodiments, in preparing prepolymer B, the preliminary polymerization is carried out in a water bath, the temperature of which is controlled between 55℃and 65℃for a period of 20h to 24h. The extent of preliminary polymerization is affected by the content of each component, the reaction temperature, the reaction time, and the like.

In some embodiments, in preparing prepolymer B, the curing process includes placing the mold in an oven at a temperature of 100℃to 110℃for a period of 2 hours to 4 hours.

In some embodiments, the process for preparing prepolymer B comprises: adding 0.5-2 parts of cross-linking agent and 0.01-0.05 part of catalyst into the precursor solution A, mixing and stirring for 3-5 minutes, and filtering by a 300-500 mesh filter screen while the precursor solution A is hot to obtain a transparent prepolymer B. The present application selects the steps of heating, filtering, etc. in these examples to remove materials in the composition that affect the light transmission of the material.

In some embodiments, the pre-polymer B may be preheated prior to transfer to the mold, for example, by preheating the mold at a temperature corresponding to the initial polymerization, or alternatively, the mold may be preheated in an oven at a temperature of 70℃to 80 ℃.

In some embodiments, a mechanical device, such as a peristaltic pump or the like, is optionally used to transfer the prepolymer B into the mold.

In some embodiments, the mold includes, but is not limited to, a flat mold, for example, the flat mold selected by the present application includes two pieces of toughened glass with consistent shape and size, the two pieces of toughened glass are washed, dried, and placed flush to make a certain distance between the two pieces of toughened glass, and then edge sealed by a silica gel strip, so that the toughened glass and the silica gel strip enclose a sealed area for containing the prepolymer B.

In some embodiments, precursor solution a is prepared at a temperature of 70 ℃ to 80 ℃ to render precursor solution a transparent.

In some embodiments, the process of preparing precursor liquid a comprises: 40 to 60 parts of methyl methacrylate, 25 to 45 parts of organic lead, 5 to 15 parts of organic boron, 3 to 10 parts of internal lubricant and 0.02 to 0.06 part of ultraviolet absorbent are uniformly mixed according to parts by mass, wherein the uniformly mixing comprises a mechanical stirring mode, such as controlling the stirring speed to be 100 to 150rpm, and the stirring time to be 20 to 30 minutes. And controlling the temperature to 70-80 ℃ to make the precursor liquid A in a transparent state.

In a third aspect the present application provides an organic glass comprising the composition of the first aspect as a chemical starting material or produced by the production process of the second aspect.

A fourth aspect of the application is to provide an aerospace transparency comprising the plexiglass of the third aspect. The aviation transparent part is used as an important part in aviation equipment, has high requirements on optical properties of organic glass, such as good light transmittance, relatively small haze and the like, has good mechanical properties, and also has ageing resistance, damp heat resistance, salt fog resistance and the like. The organic glass provided by the application can also realize effective blocking of various radiations on the premise of ensuring the basic performances.

The experimental methods used in the examples below are conventional methods unless otherwise specified.

Materials, reagents and the like used in the examples described below are commercially available unless otherwise specified.

The present application may employ conventional techniques of inorganic chemistry within the skill of the art. In the examples below, efforts are made to ensure accuracy with respect to numbers used (including amounts, temperature, reaction time, etc.), but some experimental errors and deviations should be accounted for. The temperatures (in degrees celsius) used in the examples below are in degrees celsius, with the pressure being at or near atmospheric. All pharmaceutical reagents were purchased as AR grade and all reactions were performed under an argon atmosphere. All reagents were obtained from commercial sources unless otherwise indicated.

The present application provides a method for preparing organic glass in the following examples, the method comprising the steps of:

s1, mixing 40-60 parts by mass of methyl methacrylate, 25-45 parts by mass of organic lead, 5-15 parts by mass of organic boron, 3-10 parts by mass of internal lubricant and 0.02-0.06 part by mass of ultraviolet absorbent uniformly, wherein the mixing comprises a mechanical stirring mode, such as controlling the stirring speed to be 100-150 rpm, and the stirring time to be 20-30 min. And controlling the temperature to 70-80 ℃ to make the precursor liquid A in a transparent state.

S2, adding 0.5-2 parts of cross-linking agent and 0.01-0.05 part of catalyst into the precursor solution A, mixing and stirring for 3-5 minutes, and filtering by a 300-500 mesh filter screen while the precursor solution A is hot to obtain a transparent prepolymer B.

S3, providing a flat plate mold: taking two pieces of toughened glass with consistent shapes and sizes, washing and drying the two pieces of toughened glass, placing the two pieces of toughened glass in a flush way, enabling the two pieces of toughened glass to have a certain distance, and then adopting a silica gel strip for edge sealing, so that the toughened glass and the silica gel strip are enclosed to form a sealed region for containing the prepolymer B. And (3) placing the flat plate die in an oven at 70-80 ℃ for preheating for standby.

S4, transferring the prepolymer B of the S2 into a die by adopting a peristaltic pump, then placing the die into a water bath, controlling the temperature of the water bath to be 55-65 ℃ and the time to be 20-24 hours, and carrying out preliminary polymerization on each component in the prepolymer B. And taking out the mould, placing the mould in a blast oven for post curing, and controlling the temperature to be 100-110 ℃ and the time to be 2-4 h. And after the solidification is finished, demoulding to obtain the organic glass plate.

Example 1

There is provided a method for preparing organic glass, comprising the steps of:

S1, mixing 50 parts by mass of methyl methacrylate, 40 parts by mass of organic lead (35 parts by mass of lead acrylate+5 parts by mass of lead stearate), 8 parts by mass of organic boron (inverse propylene boric acid), 5 parts by mass of internal lubricant (stearyl alcohol) and 0.03 part by mass of ultraviolet absorbent (UV-327), wherein the mixing comprises a mechanical stirring mode, such as controlling the stirring speed to be 100 rpm-150 rpm, and the stirring time to be 20 min-30 min. And controlling the temperature to 70-80 ℃ to make the precursor liquid A in a transparent state.

S2, adding 1.2 parts of cross-linking agent (EDMA) and 0.03 part of catalyst (AIBN) into the precursor solution A, mixing and stirring for 3-5 minutes, and filtering by a 500-mesh filter screen while the precursor solution A is hot to obtain a transparent prepolymer B.

S3, providing a flat plate mold: taking two pieces of toughened glass (thickness is 10 mm) with consistent shapes and sizes, washing and drying the two pieces of toughened glass, placing the two pieces of toughened glass flush, enabling the distance between the two pieces of toughened glass to be 12mm, and sealing edges by adopting a silica gel strip, so that the toughened glass and the silica gel strip are enclosed to form a sealed region for containing the prepolymer B. And (3) placing the flat plate die in an oven at 70-80 ℃ for preheating for standby.

S4, transferring the prepolymer B of the S2 into a die by adopting a peristaltic pump, then placing the die into a water bath, controlling the temperature of the water bath to be 60 ℃ and the time to be 22 hours, and carrying out preliminary polymerization on each component in the prepolymer B. And taking out the mould, putting the mould into a blast oven for post-curing, controlling the temperature to 105 ℃ and the time to 3 hours. And after the solidification is finished, demoulding to obtain the organic glass plate with the thickness of 12 mm. The specific physical diagram can be schematically shown in fig. 1 and 2.

Wherein. The chemical compositions and preparation processes of examples 1-2 to 1-10, examples 2-1 to 2-3, and examples 3-1 to 3-2, examples 4-1 to 4-2 are shown in Table 1 and Table 2.

Table 1 list of chemical components of examples

Table 2 list of process parameters

Comparative example 1

A method of preparing a plexiglass is provided which differs from example 1 in that no internal lubricant is used in S1.

Comparative example 2

A method of preparing an organic glass is provided, which differs from example 1 in that no saturated organic acid lead is used in S1.

Comparative example 3

A method for producing an organic glass is provided, which differs from example 1 in that no saturated organic acid lead is used in S1 and that the unsaturated organic acid lead is used in 20 parts by mass.

Comparative example 4

A method for producing an organic glass is provided, which differs from example 1 in that organoboron is not used in S1, and the amount of the internal lubricant used is adjusted to 2 parts.

Performance test:

1. light transmission: the method adopts GB/T240-2008: determination of light transmittance and haze of transparent plastics the light transmittance of the organic glass sheets obtained in the above examples and comparative examples was determined.

2. Stress solvent silver lines: the solvent resistance of the organic glass sheets prepared in the above examples and comparative examples was determined by the HB6657-1992 aero organic glass silver streak test method.

3. Radiation protection performance:

3.1X-ray shielding ratio: the shielding properties of the samples against 50KeV, 10mA copper targets were measured on a Rigaku D/max-rA x-ray diffractometer.

3.2 Thermal neutron shielding ratio: using an Am-Be neutron source.

The device used for the performance test includes any device of an unlimited model or manufacturer as is conventional in the art.

Examples and comparative examples the test results obtained according to the above test methods are shown in table 3.

As is clear from the above examples and comparative examples 1 and 4, the selection and content of the internal lubricant have a large influence on the light transmittance of the plexiglas, and further influence the radiation resistance thereof. It is clear from the results of examples, comparative examples 2 and 3 that the saturated organic acid lead and the unsaturated organic acid lead cooperate to exert the properties of being friendly to various types of radiation.

The above description of embodiments is only for aiding in the understanding of the method of the present application and its core ideas; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.

Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As referred to throughout the specification and claims, the terms "comprising," including, "and" includes "are intended to be interpreted as" including/comprising, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art is able to solve the technical problem within a certain error range, substantially achieving the technical effect. The description hereinafter sets forth a preferred embodiment for practicing the application, but is not intended to limit the scope of the application, as the description is given for the purpose of illustrating the general principles of the application. The scope of the application is defined by the appended claims.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or system comprising such elements.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

While the foregoing description illustrates and describes the preferred embodiments of the present application, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as expressed herein, either as a result of the foregoing teachings or as a result of the knowledge or technology of the relevant art. And that modifications and variations which do not depart from the spirit and scope of the application are intended to be within the scope of the appended claims.

Claims (10)

1. A composition for organic glass, characterized in that: comprises the following chemical components in parts by mass:

Methyl methacrylate: 40-60 parts;

organic lead: 25-45 parts;

Organoboron: 5-15 parts;

internal lubricant: 3-10 parts;

crosslinking agent: 0.5 to 2 parts;

catalyst: 0.01 to 0.05 part;

The organic lead comprises saturated organic lead acid and unsaturated organic lead acid; the mass ratio between the saturated organic acid lead and the unsaturated organic acid lead is 1 (4-8);

The organoboron is an unsaturated organoboric acid.

2. The composition for organic glass according to claim 1, wherein: the unsaturated organic acid lead comprises an acrylic lead monomer;

preferably, the acrylic lead monomer comprises at least one of lead acrylate, lead methacrylate, and lead ethylacrylate;

Preferably, the unsaturated organic boric acid comprises at least one of inverse propylene boric acid and 3-acrylamidophenylboric acid.

3. The composition for organic glass according to claim 1 or 2, wherein: the saturated organic acid lead comprises at least one of lead laurate and lead stearate;

Preferably, the mass ratio between the saturated organic acid lead and the unsaturated organic acid lead is 1 (7-8).

4. The composition for organic glass according to claim 1 or 2, wherein: the mass of the internal lubricant is 10% -20% of the total mass of the organolead and the organoboron;

The internal lubricant comprises at least one of lauryl alcohol, myristyl alcohol, palmityl alcohol, stearyl alcohol, arachidyl alcohol, and behenyl alcohol.

5. The composition for organic glass according to claim 1 or 2, wherein: comprises the following chemical components in parts by mass:

Methyl methacrylate: 40-60 parts;

Unsaturated organic acid lead: 35-40 parts;

saturated organic acid lead: 5 parts;

unsaturated organoboric acid: 8-15 parts

Internal lubricant: 5-10 parts;

crosslinking agent: 0.5 to 2 parts;

Catalyst: 0.01 to 0.05 part;

ultraviolet absorber: 0.02 to 0.06 portions.

6. A preparation method of organic glass is characterized in that: the preparation method comprises the following preparation processes:

Preparing a precursor solution A: according to the mass parts, 40 to 60 parts of methyl methacrylate, 25 to 45 parts of organic lead, 5 to 15 parts of organic boron and 3 to 10 parts of internal lubricant are uniformly mixed to obtain a precursor solution A;

Preparation of prepolymer B: adding 0.5-2 parts of cross-linking agent and 0.01-0.05 part of catalyst into the precursor solution A, and uniformly mixing to obtain a prepolymer B;

Providing a mold;

preparing an organic glass plate: transferring the prepolymer B into the die, performing preliminary polymerization, performing post-curing treatment, and taking out of the die after curing is finished to obtain the organic glass plate.

7. The method of manufacturing according to claim 6, wherein: in the preparation of the prepolymer B, the preliminary polymerization is carried out in a water bath, the temperature of the water bath is controlled to be 55-65 ℃ and the time is controlled to be 20-24 hours;

preferably, the curing treatment comprises placing the mold in an oven at a temperature of 100-110 ℃ for 2-4 hours.

8. The preparation method according to claim 6 or 7, characterized in that: in the preparation of the precursor solution A, the temperature is controlled to be 70-80 ℃ so that the precursor solution A is in a transparent state.

9. A plexiglass, characterized by comprising the composition of claims 1-5 as a chemical raw material or by the preparation method of any one of claims 6-8.

10. An aerospace transparency comprising the plexiglass of claim 9.