阅读说明：本技术 一种有机胺离子型聚合物中间膜及其制备方法和应用 (Organic amine ionic polymer intermediate film and preparation method and application thereof ) 是由 王超 张辉 其他发明人请求不公开姓名 于 2021-08-23 设计创作，主要内容包括：本发明属于安全玻璃领域,具体涉及一种有机胺离子型聚合物中间膜及其制备方法和应用。本发明的有机胺离子型聚合物中间膜包括有机胺离子化聚合物；所述有机胺离子化聚合物选自有机胺离子化改性乙烯-丙烯酸类共聚物。本发明通过有机胺离子化聚合物,经挤出流延工艺制备得到有机胺离子型聚合物中间膜,中间膜机械强度得到改善。同时本发明的中间膜可用于制备安全夹胶玻璃。本发明制备的有机胺离子型聚合物中间膜,反应简单易行,制备得到的安全夹胶玻璃的雾度和耐水热性均得到有效改善。(The invention belongs to the field of safety glass, and particularly relates to an organic amine ionic polymer intermediate film, and a preparation method and application thereof. The organic amine ionic polymer intermediate film comprises an organic amine ionic polymer; the organic amine ionized polymer is selected from organic amine ionized modified ethylene-acrylic acid copolymer. The organic amine ionic polymer intermediate film is prepared by the organic amine ionic polymer through an extrusion casting process, and the mechanical strength of the intermediate film is improved. Meanwhile, the intermediate film can be used for preparing the safety laminated glass. The organic amine ionic polymer intermediate film prepared by the invention is simple and easy to react, and the haze and the water and heat resistance of the prepared safe laminated glass are effectively improved.)

1. An organic amine ionic polymer intermediate film, wherein the intermediate film comprises an organic amine ionic polymer;

the organic amine ionized polymer is selected from organic amine ionized modified ethylene-acrylic acid copolymer.

2. The organic amine ionic polymer intermediate film according to claim 1, wherein the organic amine ionic modified ethylene-methacrylic acid copolymer is prepared by uniformly mixing organic amine and ethylene-acrylic acid copolymer and then carrying out an ionization reaction.

Preferably, the mixing temperature is 20-80 ℃ and the mixing time is 0.5-2 h.

Preferably, the temperature of the ionization reaction is 95 ℃ to 240 ℃, preferably 130 ℃ to 210 ℃. Preferably, the ionization reaction time is 2h to 12 h.

3. The organic amine ionic polymer intermediate film according to claim 1 or 2, wherein the ethylene-acrylic acid copolymer is selected from ethylene-methacrylic acid copolymer and/or ethylene-acrylic acid copolymer, preferably ethylene-methacrylic acid copolymer.

4. The organic amine ionic polymer intermediate film according to any one of claims 1 to 3, wherein the organic amine is selected from a monoamine, a diamine or a triamine, preferably a diamine.

Preferably, the monoamine can be at least one of ethylamine, propylamine, butylamine, pentylamine, hexylamine, heptylamine, octylamine, nonylamine, decylamine, undecylamine, dodecylamine, tridecylamine, tetradecylamine, pentadecylamine, hexadecylamine, heptadecylamine, octadecylamine and isomers thereof, preferably at least one of pentylamine, hexylamine, heptylamine, octylamine, nonylamine, decylamine, undecylamine, dodecylamine, tridecylamine, tetradecylamine, pentadecylamine, hexadecylamine and isomers thereof.

Preferably, the diamine can be at least one selected from ethylenediamine, propylenediamine, butylenediamine, pentylenediamine, hexylenediamine, heptylenediamine, octylenediamine, nonylenediamine, decyldiamine, undecylenediamine, and dodecyldiamine, preferably at least one selected from butylenediamine, pentylenediamine, hexylenediamine, heptylenediamine, octylenediamine, nonylenediamine, and decyldiamine.

Preferably, the triamine is selected from the group of triamines having a melting point in the range of 30 ℃ to 90 ℃.

5. The organic amine ionic polymer intermediate film according to any one of claims 1 to 4, wherein the content of the acrylic structural unit in the ethylene-acrylic acid copolymer is 5 to 20 wt%, preferably 7 to 15 wt%.

6. The organic amine ionic polymer intermediate as claimed in any one of claims 1 to 5, wherein the carboxylic acid functional group of the ethylene acrylic acid based copolymer is neutralized with an organic amine.

Preferably, the organic amine-ionized polymer has an amino functional group in an amount of 10 to 75% by mole of the carboxylic acid functional group.

Preferably, the organic amine ionized polymer has 25 to 90 mol% of unneutralized carboxylic acid functional groups.

7. The organic amine ionic polymer intermediate film according to any one of claims 1 to 6, wherein the intermediate film is prepared by casting the organic amine ionic polymer into a film.

Preferably, the thickness of the ionic polymer intermediate film is 0.35mm to 2.5mm, preferably 0.75mm to 1.5 mm.

8. The method for preparing an organic amine ionic polymer intermediate film according to any one of claims 1 to 7, wherein the method comprises the steps of:

preparing the organic amine ionic polymer, and preparing the organic amine ionic polymer intermediate film through granulation, extrusion, tape casting and film forming.

9. Use of the organic amine ionic polymer intermediate film according to any one of claims 1 to 7 for safety laminated glass.

10. A safety laminated glass, comprising the organic amine ionic polymer intermediate film according to any one of claims 1 to 7 and a glass layer, wherein the glass layer is arranged on both sides of the ionic polymer intermediate film.

Preferably, the safety laminated glass is impact-resistant laminated glass.

Technical Field

The invention belongs to the field of safety glass, and particularly relates to an organic amine ionic polymer intermediate film, and a preparation method and application thereof.

Background

The laminated glass is one kind of safety glass, and is composite glass product with one or several layers of organic polymer intermediate film sandwiched between two or several sheets of glass and through special high temperature pre-pressing (or vacuum pumping) and high temperature and high pressure treatment to adhere the glass and the organic polymer intermediate film permanently.

The organic polymer intermediate films commonly used according to different application scenarios mainly include EVA intermediate films (ethylene-vinyl acetate copolymers), PVB intermediate films (polyvinyl butyral), SGP intermediate films (ethylene-methacrylic acid ionic copolymers), and TPU intermediate films (polyurethane elastomers).

The EVA intermediate film is widely applied to the civil field with economy, the laminated glass with the EVA intermediate film is mainly used for indoor partition and decoration, such as embossed glass, decorative glass, toughened glass, bent glass, building laminated glass, common anti-theft glass and the like, and the EVA intermediate film is generally not suitable for outdoor curtain walls. The PVB intermediate film is originally developed for automobile glass, and is not developed for a building curtain wall, so that the PVB intermediate film is rich in elasticity, relatively soft, small in shear modulus, capable of obviously sliding relatively after being stressed between two pieces of glass, small in bearing capacity and large in bending deformation. Meanwhile, the exposed edge of the laminated glass with the PVB intermediate film is easy to be wetted and glued, so that the laminated glass can be used for a common glass curtain wall and is not suitable for a glass curtain wall with high performance requirements. The ionic intermediate film developed by the American DuPont company, which is called SGP in trade name, can better meet the requirements of the laminated glass of the building curtain wall. The SGP laminated glass has good integrity, the tearing strength of the SGP intermediate film is 5 times that of a PVB intermediate film, even if the glass is broken, the SGP intermediate film can also be used for bonding broken glass to form a broken temporary structure, the bending deformation of the SGP intermediate film is small, and a certain amount of load can be borne without falling down of the whole glass. This greatly improves the safety of the glass. The TPU intermediate film has extremely high strength which is 5-10 times that of a PVB intermediate film, extremely high penetration resistance and extremely high toughness, and is widely applied to the fields of armors, airplanes, high-speed rails, information technology, new energy, high-end equipment and the like.

Although the SGP intermediate film has excellent performance and has a wide market particularly in the high-end building field, it is difficult to popularize domestically due to its high terminal price and limited domestic supply. Meanwhile, because the ethylene-methacrylic acid copolymer is generally subjected to ionization modification by using inorganic metal oxide or hydroxide, such as sodium hydroxide, zinc oxide and the like, the compatibility of reactants is poor, reaction equipment and process are complex, and the haze of the product is easily increased due to uneven and insufficient reaction. There are companies or research institutions in China to develop ionic intermediate membranes in succession, but no breakthrough is made in the late stage.

Therefore, the search for a simple and feasible novel ionization modification process is the key for realizing the localization supply of the high-strength ionization polymer laminated film and breaking through the limitation of foreign products.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention is realized by the following scheme:

the invention provides an organic amine ionic polymer intermediate film, which comprises an organic amine ionic polymer;

the organic amine ionized polymer is selected from organic amine ionized modified ethylene-acrylic acid copolymer.

According to the embodiment of the invention, the organic amine ionization modified ethylene-methacrylic acid copolymer is prepared by uniformly mixing organic amine and ethylene-acrylic acid copolymer and then carrying out ionization reaction.

Preferably, the mixing temperature is 20-80 ℃ and the mixing time is 0.5-2 h.

Preferably, the temperature of the ionization reaction is 95 ℃ to 240 ℃, preferably 130 ℃ to 210 ℃. Preferably, the ionization reaction time is 2h to 12 h.

According to an embodiment of the present invention, the ethylene-acrylic acid based copolymer is selected from ethylene-methacrylic acid copolymers and/or ethylene-acrylic acid copolymers, preferably ethylene-methacrylic acid copolymers.

According to an embodiment of the invention, the organic amine is selected from a monoamine, diamine or triamine, preferably a diamine.

Illustratively, the monoamine can be at least one of ethylamine, propylamine, butylamine, pentylamine, hexylamine, heptylamine, octylamine, nonylamine, decylamine, undecylamine, dodecylamine, tridecylamine, tetradecylamine, pentadecylamine, hexadecylamine, heptadecylamine, octadecylamine and isomers thereof, preferably at least one of pentylamine, hexylamine, heptylamine, octylamine, nonylamine, decylamine, undecylamine, dodecylamine, tridecylamine, tetradecylamine, pentadecylamine, hexadecylamine and isomers thereof.

Illustratively, the diamine can be at least one selected from ethylenediamine, propylenediamine, butylenediamine, pentylenediamine, hexylenediamine, heptylenediamine, octylenediamine, nonylenediamine, decyldiamine, undecylenediamine, and dodecyldiamine, preferably at least one selected from butylenediamine, pentylenediamine, hexylenediamine, heptylenediamine, octylenediamine, nonylenediamine, and decyldiamine.

Illustratively, the triamine is selected from the group consisting of triamines having a melting point in the range of 30 ℃ to 90 ℃.

According to an embodiment of the present invention, the content of the acrylic structural unit in the ethylene-acrylic copolymer is 5 to 20 wt%, preferably 7 to 15 wt%.

According to an embodiment of the present invention, the carboxylic acid functionality in the ethylene acrylic acid based copolymer is neutralized with an organic amine.

Illustratively, the organic amine-ionized polymer has an amount of amino functional groups of 10 to 75 mole percent of carboxylic acid functional groups.

According to an embodiment of the present invention, the organic amine-ionized polymer has a molar content of unneutralized carboxylic acid functional groups of 25 to 90%.

According to an embodiment of the present invention, the intermediate film is prepared by casting the organic amine-ionized polymer into a film.

According to an embodiment of the present invention, the thickness of the ionic polymer intermediate film is 0.35mm to 2.5mm, preferably 0.75mm to 1.5 mm.

The invention also provides a preparation method of the organic amine ionic polymer intermediate film, which comprises the following steps:

preparing the organic amine ionic polymer, and preparing the organic amine ionic polymer intermediate film through granulation, extrusion, tape casting and film forming.

The invention also provides an application of the organic amine ionic polymer intermediate film in safety laminated glass.

The invention also provides safe laminated glass which comprises the organic amine ionic polymer intermediate film and glass layers, wherein the glass layers are arranged on two sides of the ionic polymer intermediate film.

Preferably, the safety laminated glass is impact-resistant laminated glass.

The invention has the beneficial effects that:

according to the invention, the ethylene-acrylic acid copolymer is modified by adopting the organic amine to prepare the organic amine ionized polymer, the organic amine has good compatibility with the ethylene-acrylic acid copolymer and can form an ammonium carboxylate structure with a carboxylic acid functional group in an acrylic acid structural unit, the product transparency and the mechanical strength are improved, the reversible transformation performance is realized, and the high-temperature tape casting processability of the polymer is not influenced. Although the organic amine and the acrylic acid structural unit may form a very small amount of amide structural unit at high temperature, the product performance is not negatively affected. The ionic polymer intermediate film prepared by the polymer improves the strength and the transparency of the intermediate film and reduces the haze of the intermediate film. The preparation process of the ionic polymer intermediate film is simple and easy to implement, and the safety laminated glass prepared by the ionic polymer intermediate film has good heat resistance and high adhesive force of the intermediate film to glass. The ionic polymer intermediate film can be used for preparing the safe laminated glass on the conventional laminated glass production equipment.

The invention adopts organic amine to carry out ionization modification on the ethylene-methacrylic acid copolymer. The organic amine and the ethylene-methacrylic acid copolymer have good compatibility, are easy to mix, have uniform reaction and simple process, and can not cause the haze of the product to rise because of incomplete reaction. The obtained ionized modified polymer is blended, extruded and cast to prepare the ionic polymer film. The ionization modification process can obviously improve the tensile strength of the polymer, optimize the light transmission of the intermediate film material and reduce the haze of the intermediate film. The ionized polymer intermediate film can be used for preparing safety laminated glass, such as impact-resistant laminated glass.

Detailed Description

[ organic amine-ionizing Polymer ]

The invention provides an organic amine ionized polymer, which is selected from organic amine ionized modified ethylene-acrylic acid copolymers.

According to the invention, the organic amine ionization modified ethylene-methacrylic acid copolymer is prepared by uniformly mixing organic amine and ethylene-acrylic acid copolymer and then carrying out ionization reaction.

Illustratively, the mixing temperature is 20 ℃ to 80 ℃ and the mixing time is 0.5h to 2 h.

Illustratively, the temperature of the ionization reaction is 95 ℃ to 240 ℃, preferably 130 ℃ to 210 ℃. Illustratively, the time of the ionization reaction is 2h to 12 h.

According to the invention, the ethylene-acrylic acid copolymer is selected from ethylene-methacrylic acid copolymers and/or ethylene-acrylic acid copolymers, preferably ethylene-methacrylic acid copolymers.

According to the invention, the organic amine is selected from monoamines, diamines or triamines, preferably diamines.

Illustratively, the monoamine can be at least one of ethylamine, propylamine, butylamine, pentylamine, hexylamine, heptylamine, octylamine, nonylamine, decylamine, undecylamine, dodecylamine, tridecylamine, tetradecylamine, pentadecylamine, hexadecylamine, heptadecylamine, octadecylamine and isomers thereof, preferably at least one of pentylamine, hexylamine, heptylamine, octylamine, nonylamine, decylamine, undecylamine, dodecylamine, tridecylamine, tetradecylamine, pentadecylamine, hexadecylamine and isomers thereof.

Illustratively, the diamine can be at least one selected from ethylenediamine, propylenediamine, butylenediamine, pentylenediamine, hexylenediamine, heptylenediamine, octylenediamine, nonylenediamine, decyldiamine, undecylenediamine, and dodecyldiamine, preferably at least one selected from butylenediamine, pentylenediamine, hexylenediamine, heptylenediamine, octylenediamine, nonylenediamine, and decyldiamine.

Illustratively, the triamine is selected from the group consisting of triamines having a melting point in the range of 30 ℃ to 90 ℃.

According to the present invention, the content of the acrylic structural unit in the ethylene-acrylic copolymer is 5 to 20 wt%, preferably 7 to 15 wt%.

According to the present invention, the carboxylic acid functionality in the ethylene acrylic acid based copolymer is neutralized with an organic amine.

Illustratively, the amount of amino functional groups in the organic amine-ionized polymer is 10 to 75% of the molar content of carboxylic acid functional groups, such as 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, or any two number intervals.

According to the invention, the organic amine-ionized polymer has a molar content of unneutralized carboxylic acid functional groups of 25 to 90%, for example 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90% or any two values in the interval.

[ use of organic amine-ionized Polymer ]

The invention also provides an application of the organic amine ionized polymer in an ionic polymer intermediate film or safety laminated glass.

[ organic amine Ionic Polymer intermediate film ]

The invention also provides an organic amine ionic polymer intermediate film, which comprises the organic amine ionic polymer.

According to the invention, the intermediate film is prepared by casting and film forming the organic amine ionized polymer.

According to the invention, the thickness of the ionic polymer intermediate film is 0.35mm to 2.5mm, preferably 0.75mm to 1.5 mm.

[ method for producing organic amine Ionic Polymer intermediate film ]

The invention also provides a preparation method of the organic amine ionic polymer intermediate film, which comprises the following steps:

preparing the organic amine ionic polymer, and preparing the organic amine ionic polymer intermediate film through granulation, extrusion, tape casting and film forming.

Illustratively, the organic amine-ionized polymer has the meaning as described above.

[ use of organic amine Ionic Polymer intermediate film ]

The invention also provides an application of the organic amine ionic polymer intermediate film in safety laminated glass.

[ safety laminated glass ]

The invention also provides safe laminated glass which comprises the organic amine ionic polymer intermediate film and glass layers, wherein the glass layers are arranged on two sides of the ionic polymer intermediate film. Preferably, the safety laminated glass is impact-resistant laminated glass.

According to the invention, the thickness of the glass layer is not particularly defined, and the safety laminated glass can be prepared.

According to the present invention, the safety laminated glass can be produced, for example, by conventional laminated glass production equipment and processes, such as roll processing, vacuum bag or vacuum ring processes, autoclave processes, laminated furnace processes, and the like.

The technical solution of the present invention will be further described in detail with reference to specific embodiments. It is to be understood that the following examples are only illustrative and explanatory of the present invention and should not be construed as limiting the scope of the present invention. All the technologies realized based on the above-mentioned contents of the present invention are covered in the protection scope of the present invention.

Unless otherwise indicated, the raw materials and reagents used in the following examples are all commercially available products or can be prepared by known methods.

The interlayer or laminated safety glass samples of the following examples were tested as follows:

1. and (3) testing tensile strength: the intermediate film sample is processed by an electric tensile testing machine ZHIQU: tensile strength testing was performed on model ZQ990LA (one set for every five samples, averaged after measurement).

2. And (3) testing light transmittance: the light transmittance of the laminated safety glass samples (300mm × 300mm) was measured using an aobotai high-precision haze meter model SGH-2 (five points were randomly measured for each sample and averaged).

3. Haze test: the laminated safety glass sample (300mm x 300mm) was subjected to haze measurement using an Obotai high precision haze meter SGH-2 type (five points were measured at random for each sample and the average value was taken)

4. And (3) testing water heat resistance:

the heat resistance test was carried out according to GB/T5137.3-2002, and a laminated safety glass sample (300mm x 300mm) was placed vertically in boiling water and heated for 2 hours to observe whether the sample changed, the whole body was defective, and peeling or bubbling occurred between the edge and the glass. When no obvious change exists, the product is defined as excellent; when the edge is whitened, the definition is good; when the peeling between the edge and the glass is less than 15mm or the local edge is less than 15mm, generating a very small amount of bubbles, defining the product as qualified; when the peeling between the edge and the glass is more than or equal to 15mm or bubbles are generated at a position more than 15mm away from the edge of the glass, the glass is defined as unqualified.

5. And (3) testing the impact resistance of laminated glass:

according to GB15763.3-2009, a Q-37MCJ-6 falling ball impact tester is adopted to carry out a falling ball impact peeling test, 6 laminated glass sample pieces with the thickness of 610mm and 610mm are taken and placed on the surface of a sample at the position with the height of 4800mm by adopting 2260g of steel balls, and then the sample is subjected to a free falling impact test. The 6 samples were excellent in terms of no cracking of the interlayer film, and no peeling of glass fragments and exposure of the interlayer film; the 6 samples and 5 intermediate films are not cracked, and the phenomenon that the intermediate films are not peeled and exposed by glass fragments is defined as qualified; the 6 samples and 3 samples were defined as being defective in that no cracking of the interlayer film occurred and no peeling of the interlayer film due to glass cullet occurred.

Example 1

Taking a commercially available ethylene-methacrylic acid copolymer, wherein the content of a methacrylic acid structural unit is 15 wt%, forming a film by an extrusion casting process to obtain an organic amine ionic polymer intermediate film 1, wherein the thickness of the obtained intermediate film 1 is 1.2mm, the tensile strength is 23.7MPa, combining the intermediate film 1 and two glass sheets, degassing by a vacuum bag, preparing laminated safety glass by a laminating furnace process to obtain a sample 1, further testing the light transmittance, the haze, the impact resistance and the water and heat resistance of the sample 1, and listing the results in Table 1.

Taking the ethylene-methacrylic acid copolymer, wherein the content of the methacrylic acid structural unit is 15 wt%, adding ethylenediamine (the amount of the added amino functional group is 10% of the mole content of the carboxylic acid functional group), placing the mixture in a kneader, mixing for 0.5h at 20 ℃, heating to 115 ℃ for neutralization reaction, reacting for 6h, and forming a film by an extrusion casting process to obtain the organic amine ionic polymer intermediate film 2, wherein the thickness of the obtained intermediate film 2 is 1.2mm, and the tensile strength is 26.2 MPa. The interlayer film 2 and two pieces of glass are laminated, vacuum bag degassing is adopted, and the laminated safety glass is prepared through a laminating furnace process to obtain a sample 2, the light transmittance, the haze, the impact resistance and the water and heat resistance of the sample 2 are further tested, and the results are shown in table 1.

Taking the ethylene-methacrylic acid copolymer, wherein the content of the methacrylic acid structural unit is 15 wt%, adding ethylenediamine (the amount of the added amino functional group is 35% of the molar content of the carboxylic acid functional group), placing the mixture in a kneader, mixing for 0.5h at 20 ℃, heating to 115 ℃ for neutralization reaction, reacting for 6h, and forming a film by an extrusion casting process to obtain the organic amine ionic polymer intermediate film 3, wherein the thickness of the obtained intermediate film 3 is 1.2mm, and the tensile strength is 31.4 MPa. The interlayer film 3 and two pieces of glass are laminated, vacuum bag degassing is adopted, and the laminated safety glass is prepared through a laminating furnace process to obtain a sample 3, the light transmittance, the haze, the impact resistance and the water and heat resistance of the sample are further tested, and the results are shown in table 1.

Taking the ethylene-methacrylic acid copolymer, wherein the content of the methacrylic acid structural unit is 15 wt%, adding ethylenediamine (the amount of the added amino functional group is 45% of the mole content of the carboxylic acid functional group), placing the mixture in a kneader, mixing for 0.5h at 20 ℃, heating to 115 ℃ for neutralization reaction, reacting for 6h, and forming a film by an extrusion casting process to obtain the organic amine ionic polymer intermediate film 4, wherein the thickness of the obtained intermediate film 4 is 1.2mm, and the tensile strength is 32.1 MPa. The interlayer film 4 and two pieces of glass are laminated, vacuum bag degassing is adopted, and laminated safety glass is prepared through a laminating furnace process to obtain a sample 4, the light transmittance, the haze, the impact resistance and the water and heat resistance of the sample 4 are further tested, and the results are shown in table 1.

Taking the ethylene-methacrylic acid copolymer, wherein the content of the methacrylic acid structural unit is 15 wt%, adding ethylenediamine (the amount of the added amino functional group is 75% of the molar content of the carboxylic acid functional group), placing the mixture in a kneader, mixing for 0.5h at 20 ℃, heating to 115 ℃ for neutralization reaction, reacting for 6h, and forming a film by an extrusion casting process to obtain the organic amine ionic polymer intermediate film 5, wherein the thickness of the obtained intermediate film 5 is 1.2mm, and the tensile strength is 32.2 MPa. The interlayer film 5 and two pieces of glass are laminated, vacuum bag degassing is adopted, and the laminated safety glass is prepared through a laminating furnace process to obtain a sample 5, the light transmittance, the haze, the impact resistance and the water and heat resistance of the sample 5 are further tested, and the results are shown in table 1.

Taking the ethylene-methacrylic acid copolymer, wherein the content of the methacrylic acid structural unit is 15 wt%, adding ethylenediamine (the amount of the added amino functional group is 45% of the mole content of the carboxylic acid functional group), placing the mixture in a kneader, mixing for 0.5h at 20 ℃, heating to 115 ℃ for neutralization reaction, reacting for 2h, and forming a film by an extrusion casting process to obtain the organic amine ionic polymer intermediate film 6, wherein the thickness of the obtained intermediate film 6 is 1.2mm, and the tensile strength is 32.6 MPa. The interlayer film 6 and two pieces of glass are laminated, vacuum bag degassing is adopted, and the laminated safety glass is prepared through a laminating furnace process to obtain a sample 6, the light transmittance, the haze, the impact resistance and the water and heat resistance of the sample 6 are further tested, and the results are shown in table 1.

Taking the ethylene-methacrylic acid copolymer, wherein the content of the methacrylic acid structural unit is 15 wt%, adding ethylenediamine (the amount of the added amino functional group is 45% of the mole content of the carboxylic acid functional group), placing the mixture in a kneader, mixing for 0.5h at 20 ℃, heating to 115 ℃ for neutralization reaction, reacting for 12h, and forming a film by an extrusion casting process to obtain the organic amine ionic polymer intermediate film 7, wherein the thickness of the obtained intermediate film 7 is 1.2mm, and the tensile strength is 33.2 MPa. The interlayer film 7 and two pieces of glass are laminated, vacuum bag degassing is adopted, and laminated safety glass is prepared through a laminating furnace process to obtain a sample 7, the light transmittance, the haze, the impact resistance and the water and heat resistance of the sample 7 are further tested, and the results are shown in table 1.

Taking the ethylene-methacrylic acid copolymer, wherein the content of the methacrylic acid structural unit is 15 wt%, adding ethylenediamine (the amount of the added amino functional group is 45% of the mole content of the carboxylic acid functional group), placing the mixture in a kneader, mixing for 0.5h at 20 ℃, heating to 125 ℃ for neutralization reaction, reacting for 2h, and forming a film by an extrusion casting process to obtain the organic amine ionic polymer intermediate film 8, wherein the thickness of the obtained intermediate film 8 is 1.2mm, and the tensile strength is 32.1 MPa. The interlayer film 8 and two pieces of glass are laminated, vacuum bag degassing is adopted, and the laminated safety glass is prepared through a laminating furnace process to obtain a sample 8, the light transmittance, the haze, the impact resistance and the water and heat resistance of the sample 8 are further tested, and the results are shown in table 1.

TABLE 1

Degree of neutralization means: the amount of amino functions added to the organic amine is a percentage of the molar carboxylic acid function content.

As can be seen from table 1, the strength of the intermediate film gradually increases with the amount of the organic amine (e.g., ethylenediamine) used, and the change in tensile strength of the intermediate film becomes gentle when the neutralization degree exceeds 45%. The light transmittance of the adhesive safety glass sample shows similar change, the light transmittance of the sample is obviously improved along with the increase of the neutralization degree of the intermediate film, and the light transmittance of the sample does not obviously change after the neutralization degree exceeds 45%. The haze of the sample is also obviously improved along with the increase of the neutralization degree, the haze is optimal when the neutralization degree of the sample is 45%, but the haze of the sample is increased due to the excessively high neutralization degree. The change in properties of samples 4, 6 and 7 with the same degree of neutralization reflects that the ionization reaction is very easy to proceed, and when the reaction is performed for 2 hours, the ionization reaction is substantially complete without causing such negative problems as a significant increase in haze. Sample 8 reflects that an increase in temperature can accelerate the reaction. When all samples are boiled in water at 100 ℃ for 2 hours, no peeling phenomenon is found between the edge and the glass, only the edge interfaces of the samples 5 and 6 generate whitening phenomenon, and other samples have no obvious change. The samples are all excellent in impact resistance.

Example 2

Taking a commercially available ethylene-acrylic acid copolymer, wherein the content of a methacrylic acid structural unit is 7.0 wt%, adding butanediamine (the amount of the added amino functional group is 45% of the mole content of the carboxylic acid functional group), placing the mixture in a kneader, mixing for 2h at 25 ℃, heating to 125 ℃ for neutralization reaction, reacting for 6h, and forming a film by an extrusion casting process to obtain an organic amine ionic polymer intermediate film, wherein the thickness of the obtained intermediate film is 1.2mm, and the tensile strength is 30.6 MPa. The interlayer film and two pieces of glass are laminated, vacuum bag degassing is adopted, and laminated safety glass is prepared through a laminating furnace process, so that the laminated safety glass sample is obtained, the sample is smooth and free of bubbles, the light transmittance is 89.1%, the haze is 0.69%, and the laminated safety glass is excellent in water and heat resistance and impact resistance.

Example 3

Taking a commercially available ethylene-methacrylic acid copolymer, wherein the content of a methacrylic acid structural unit is 9 wt%, adding a certain amount of ethylamine (the amount of the added amino functional group is 45% of the mole content of the carboxylic acid functional group), placing the mixture in a kneader, mixing for 0.5h at 20 ℃, heating to 115 ℃ for neutralization reaction, reacting for 6h, and forming a film by an extrusion casting process to obtain an organic amine ionic polymer intermediate film, wherein the thickness of the obtained intermediate film is 1.2mm, and the tensile strength is 30.2 MPa. The interlayer film and two pieces of glass are laminated, vacuum bag degassing is adopted, and laminated safety glass is prepared through a laminating furnace process, so that the laminated safety glass sample is obtained, the sample is smooth and free of bubbles, the light transmittance is 90.1%, the haze is 0.49%, and the laminated safety glass is excellent in water and heat resistance and impact resistance.

Example 4

Taking a commercial ethylene-methacrylic acid copolymer, wherein the content of a methacrylic acid structural unit is 9.5 wt%, adding a certain amount of decamethylene diamine (the amount of the added amino functional group is 45% of the molar content of the carboxylic acid functional group), placing the mixture in a kneader, mixing for 1.5h at 80 ℃, heating to 210 ℃ for neutralization reaction, reacting for 4h, and forming a film by an extrusion casting process to obtain an organic amine ionic polymer intermediate film, wherein the thickness of the obtained intermediate film is 0.75mm, and the tensile strength is 30.4 MPa. The interlayer film and two pieces of glass are laminated, vacuum bag degassing is adopted, and laminated safety glass is prepared through a laminating furnace process, so that the laminated safety glass sample is obtained, the sample is smooth and free of bubbles, the light transmittance is 91.6%, the haze is 0.39%, and the laminated safety glass is excellent in water and heat resistance and impact resistance.

Example 5

Taking a commercially available ethylene-methacrylic acid copolymer, wherein the content of a methacrylic acid structural unit is 11 wt%, adding a certain amount of heptamethylenediamine (the amount of the added amino functional group is 45% of the mole content of the carboxylic acid functional group), placing the mixture in a kneader, mixing for 1.5h at 75 ℃, heating to 160 ℃ for neutralization reaction, reacting for 7h, and forming a film by an extrusion casting process to obtain an organic amine ionic polymer intermediate film, wherein the thickness of the obtained intermediate film is 1.5mm, and the tensile strength is 31.1 MPa. The interlayer film and two pieces of glass are laminated, vacuum bag degassing is adopted, and laminated safety glass is prepared through a laminating furnace process, so that the laminated safety glass sample is obtained, the sample is smooth and free of bubbles, the light transmittance is 90.9%, the haze is 0.52%, and the laminated safety glass is excellent in water and heat resistance and impact resistance.

The exemplary embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments. Any modification, equivalent replacement, improvement and the like made by those skilled in the art within the spirit and principle of the present invention shall be included in the protection scope of the present invention.