Anti-dazzle sound-insulation colored intermediate film, preparation method thereof and laminated glass

Abstract

The invention discloses an anti-dazzle sound-insulation colored intermediate film, a preparation method thereof and laminated glass, and relates to the technical field of intermediate films, the intermediate film comprises two anti-dazzle color band layers and a sound-insulation intermediate layer arranged between the two anti-dazzle color band layers; the anti-dazzle color band layer and the sound insulation middle layer are prepared from the following components: polyvinyl acetal resin, a plasticizer, anti-dazzle particles, inorganic filler, a coupling agent, inorganic color oil, an antioxidant, an ultraviolet light absorber and a light stabilizer; by adding the anti-dazzle particles and the inorganic filler with specific contents, the anti-dazzle performance, the sound insulation performance and the self-adhesion performance of the intermediate film are improved, so that after the anti-dazzle sound insulation color intermediate film is used for preparing laminated glass, the laminated glass not only has high sound insulation performance and light transmittance, but also meets the requirement for the anti-dazzle performance of colored ribbons, and the anti-dazzle sound insulation color intermediate film is suitable for the laminated glass. Meanwhile, due to the excellent self-adhesion performance, the problem that the laminated glass generates bubbles or overflows in the preparation and lamination process can be prevented, and the quality of the laminated glass is improved.

Description

Technical Field

[0001] This invention relates to the field of interlayer film technology, specifically to an anti-glare and sound-insulating colored interlayer film, its preparation method, and laminated glass. Background Technology

[0002] In the field of road traffic, the widespread use of motor vehicles has greatly facilitated people's travel. However, driving at night inevitably leads to problems with improper use of lights. For example, drivers may fail to turn off their high beams in time when meeting oncoming traffic, causing glare and seriously affecting driving safety. On wider roads, road administration departments design greenery or anti-glare facilities at certain intervals to effectively reduce glare. However, the glare problem remains to be solved when meeting oncoming traffic on narrower roads.

[0003] With the booming development of the automotive industry, people are increasingly seeking multifunctional laminated automotive glass. Currently, the sound-insulating PVB films used in laminated glass employ a multi-layered composite structure. The middle sound-insulating layer uses modified PVB resin. By adjusting the ratio of hydroxyl, acetal, and acetyl groups in the PVB resin, the compatibility between the plasticizer and the PVB resin is increased. This, in turn, improves the sound insulation performance of the PVB film by increasing the proportion of plasticizer. While this method can improve the sound insulation performance of laminated glass, increasing the plasticizer content may lead to substandard impact resistance after the laminated glass is laminated. Furthermore, the advent of high-brightness headlights causes glare when vehicles pass each other, affecting the driver's mood, causing dizziness and irritability, and significantly impacting driving safety.

[0004] To address the aforementioned issues, Chinese patent document CN105307997A discloses an interlayer for laminated glass and laminated glass, comprising: a first component containing at least one of the following: a phthalocyanine compound with a maximum absorption wavelength of 550 nm or more and 750 nm or less; a naphthalene phthalocyanine compound with a maximum absorption wavelength of 550 nm or more and 750 nm or less; an anthracene phthalocyanine compound with a maximum absorption wavelength of 550 nm or more and 750 nm or less; and a vat compound with a maximum absorption wavelength of 550 nm or more and 750 nm or less; and a second component satisfying the following: laminated glass is fabricated using two pieces of transparent glass based on JI SR3202 (1996), and then, according to JI... Based on SR3205, when the laminated glass was irradiated with ultraviolet light for 500 hours using a 750W quartz glass mercury lamp, the absolute value of the change in visible light transmittance ΔA-Y, expressed by the formula: (AY after ultraviolet irradiation) - (AY before ultraviolet irradiation), was less than 1.0, which improved the anti-glare, light resistance, and visibility in the dark of the laminated glass.

[0005] Chinese patent document CN116285181A discloses a sound-insulating PVB film, its preparation method, and its application. The film includes: a first PVB resin layer comprising the following components in parts by weight: 100 parts PVB resin, 33-47 parts plasticizer, 0.2-1 parts antioxidant, 0.1-1.2 parts ultraviolet absorber, and 0.05-1 parts adhesion modifier; a TPU resin layer disposed on the surface of the first PVB resin layer, comprising the following components in parts by weight: 8-24 parts TPU resin, 0.01-0.2 parts antioxidant, and 0.02-0.15 parts ultraviolet absorber; and a second PVB resin layer disposed on the surface of the TPU resin layer, the composition of which is the same as that of the first PVB resin layer. The sound-insulating PVB film of this invention uses TPU material in its intermediate layer, eliminating the need for plasticizers in the intermediate layer. This prevents plasticizer leaching from the PVB film, inhibits the formation of bubbles in the laminated glass, and results in uniform thickness and good optical performance.

[0006] However, although the optical performance of the interlayer in the aforementioned prior art laminated glass is improved, its overall performance is poor. When used in laminated glass, the self-adhesive effect is generally poor, which makes it easy to generate bubbles and overflow during the laminated glass manufacturing process. In addition, the sound insulation effect and strength performance are poor, which seriously restricts its market competitiveness. Summary of the Invention

[0007] One of the objectives of this invention is to provide an anti-glare and sound-insulating colored interlayer film to improve the overall performance of the interlayer film, including its anti-glare performance, sound insulation performance, and self-adhesive performance.

[0008] The second objective of this invention is to provide a preparation method for preparing the above-mentioned anti-glare and sound-insulating colored intermediate film.

[0009] The third objective of this invention is to provide a laminated glass that improves the strength and spill prevention performance of the laminated glass.

[0010] The objective of this invention can be achieved through the following technical solutions:

[0011] In a first aspect, the present invention discloses an anti-glare and sound-insulating colored intermediate film, comprising two anti-glare colored strip layers and a sound-insulating intermediate layer stacked between the two anti-glare colored strip layers;

[0012] The anti-glare ribbon layer comprises the following components by weight: 70-90 parts polyvinyl acetal resin, 15-35 parts plasticizer, 0.025-0.25 parts anti-glare particles, 0.3-1.5 parts inorganic filler, 0.1-1 part coupling agent, 0.15-1 part inorganic color oil, 0.001-0.015 parts antioxidant, 0.005-0.04 parts ultraviolet absorber, and 0.005-0.025 parts light stabilizer;

[0013] The sound insulation intermediate layer comprises the following components by weight: 60-80 parts of polyvinyl acetal resin, 20-40 parts of plasticizer, 0.4-2 parts of inorganic filler, 0.3-1 parts of coupling agent, 0.05-0.15 parts of adhesion modifier, 0.001-0.015 parts of antioxidant, 0.005-0.04 parts of ultraviolet absorber, and 0.005-0.025 parts of light stabilizer.

[0014] Furthermore, the anti-glare particles are any one or more combinations of metal oxide particles, non-metal oxide particles, composite oxide microsphere particles, porous oxide particles, and hollow oxide particles.

[0015] Preferably, the metal oxide particles include titanium oxide (TiO2), zinc oxide (ZnO), cerium oxide (CeO2), zirconium oxide (ZrO2), and bismuth oxide (Bi2O3);

[0016] Preferably, the non-metallic oxide particles include silicon dioxide (SiO2), phosphorus pentoxide (P2O5), and borate oxide (B2O3);

[0017] Preferably, the porous oxide particles include porous silica, porous alumina (Al2O3), and porous titanium dioxide (TiO2);

[0018] Preferably, the hollow oxide particles include hollow silicon dioxide, hollow titanium dioxide (TiO2), and hollow zirconium aluminum composite oxide (ZrO2-Al2O3);

[0019] More preferably, the anti-glare particles are a mixture of titanium dioxide (TiO2) and silicon dioxide (SiO2) in a mass ratio of 1:1.

[0020] Furthermore, the inorganic color oil is any one or a combination of gray, green, blue, or brown.

[0021] Preferably, the degree of protective acetalization of the polyvinyl alcohol acetal resin is 30%-90%, and more preferably 40%-80%.

[0022] Preferably, the polyvinyl acetal resin has a molecular weight of 50,000-150,000 and a molecular weight distribution index ≤ 2.5.

[0023] Preferably, the plasticizer is one of dibutyl phthalate, dioctyl phthalate, triethylene glycol diisooctyl ester, tricresyl phosphate, tetraethylene glycol diheptyl ester, dibutyl sebacate, dioctyl sebacate, epoxidized soybean oil, tributyl acetylacetonate, dioctyl adipate, or dioctyl terephthalate; more preferably, triethylene glycol diisooctyl ester.

[0024] Preferably, the antioxidant is antioxidant 1076, antioxidant 1010, antioxidant 1098, antioxidant ODPP, antioxidant 168, bisphenol A phosphite, antioxidant TPP, antioxidant DSTOP, and / or; more preferably, a mixture of antioxidant 168 and antioxidant 1010.

[0025] Preferably, the ultraviolet absorber is one of UV-P, UV-326, UV-327, UV-328, and UV-329; more preferably, it is UV-329.

[0026] Preferably, the light stabilizer is at least one of light stabilizer 744, light stabilizer LA-68, and light stabilizer LA-62; more preferably, it is light stabilizer 744.

[0027] Preferably, the inorganic filler is at least one of nano-silica (particle size 20-50 μm), mica powder (flake size 10-30 μm), and barium sulfate (particle size 1-5 μm), and more preferably nano-silica (particle size 20-50 μm).

[0028] Preferably, the coupling agent is at least one of silane coupling agents; more preferably, it is silane coupling agent KH-550.

[0029] Preferably, the viscosity modifier is a mixture of two of the following: an alkali metal salt, an alkali metal base, or an alkali metal oxide, and deionized water; more preferably, the alkali metal salt is at least one of potassium formate, potassium acetate, potassium carbonate, potassium bicarbonate, sodium formate, sodium acetate, sodium carbonate, and sodium bicarbonate; the alkali metal base is at least one of potassium hydroxide and sodium hydroxide; and the alkali metal oxide is at least one of potassium oxide and sodium oxide.

[0030] Furthermore, the total thickness of the anti-glare and sound-insulating colored intermediate film is 0.38-1.52 mm, preferably 1.4 mm.

[0031] Furthermore, the surface illuminance of the anti-glare and sound-insulating colored intermediate film is <1000 lux, and the visible light transmittance is 70-90%.

[0032] Secondly, this invention discloses a preparation method for preparing the anti-glare and sound-insulating colored intermediate film as described above, comprising the following steps:

[0033] Step 1: Prepare the anti-glare ribbon layer;

[0034] Step A1: Prepare the components of the anti-glare ribbon layer according to the weight proportions;

[0035] Step A2: Mix the plasticizer, antioxidant, ultraviolet absorber and light stabilizer, heat to 60-80℃ and stir to dissolve, then add inorganic color oil and coupling agent and mix evenly, then grind to a particle size ≤5um, filter to obtain color paste;

[0036] Step A3: Mix the anti-glare particles and half the weight of polyvinyl acetal resin and grind them to obtain an anti-glare resin mixture;

[0037] Step A4: Mix the inorganic filler and the remaining polyvinyl acetal resin and grind them to obtain inorganic filler resin mixture A;

[0038] Step A5: Mix the color paste, anti-glare resin mixture, and inorganic filler resin mixture A evenly, and then extrude the mixture through an extruder to obtain an anti-glare ribbon layer;

[0039] Step 2: Prepare the sound insulation intermediate layer;

[0040] Step B1: Analyze the components of the sound insulation intermediate layer according to their weight proportions;

[0041] Step B2: Mix the plasticizer, antioxidant, ultraviolet absorber and light stabilizer, heat to 60-80℃ and stir to dissolve to obtain a plasticizer mixture;

[0042] Step B3: Mix the inorganic filler and polyvinyl acetal resin and grind them to obtain inorganic filler resin mixture B;

[0043] Step B4: Mix the plasticizer mixture, inorganic filler resin mixture B, coupling agent and adhesion modifier evenly, and then extrude the mixture through an extruder to obtain the sound insulation intermediate layer;

[0044] Step 3: The sound insulation intermediate layer is stacked between the two anti-glare colored strip layers, plasticized and composited by an extruder, and then formed by a pressure roller to obtain an anti-glare and sound insulation colored intermediate film.

[0045] Furthermore, in steps A5 and B4, the extruders are all twin-screw extruders, and the temperature of the twin-screw extruders is 140-215℃ and the rotation speed is 650-700rpm.

[0046] Furthermore, in steps A3, A4 and B3, the grinding conditions are: grinding at 2000-2500 rpm for 2-4 hours.

[0047] Furthermore, in step three, the extruder is a twin-screw extruder, and the die temperature of the extruder is 160-185℃.

[0048] Thirdly, the present invention also discloses a laminated glass comprising two layers of float glass, wherein a layer of anti-glare and sound-insulating colored interlayer film as described in any one of claims 1-5 is stacked between the two layers of float glass.

[0049] Furthermore, the method for preparing the laminated glass is as follows: an anti-glare and sound-insulating colored interlayer film is placed between two layers of float glass and laminated together. First, it is cold-drawn at -90KPa for 20 minutes, then hot-drawn at 130-140℃ and -90KPa for 30 minutes. After degassing, it is pressure-held at 130-140℃ and 1.3-1.5MPa for 2 hours to obtain the laminated glass.

[0050] By using the anti-glare and sound-insulating colored interlayer film of the present invention, the bonding between the anti-glare and sound-insulating colored interlayer film and the glass is better during the manufacturing of laminated glass. Specifically, because the anti-glare and sound-insulating colored interlayer film of the present invention has excellent self-adhesive properties, air bubbles are less likely to occur due to poor bonding during lamination; in addition, the anti-glare and sound-insulating colored interlayer film is less likely to overflow from the glass ends.

[0051] Beneficial effects of the invention:

[0052] The anti-glare and sound-insulating colored interlayer of this invention comprises an anti-glare colored ribbon layer and a sound-insulating interlayer layer, and is composed of plasticizers, inorganic fillers, coupling agents, antioxidants, ultraviolet absorbers, light stabilizers, color oils, viscosity modifiers, etc. Thus, by adding anti-glare particles and inorganic fillers in a specific ratio, the overall performance of the interlayer is improved, especially its anti-glare performance, sound insulation performance, and self-adhesive performance. Based on this, when laminated glass is prepared using the anti-glare and sound-insulating colored interlayer, it not only possesses high sound insulation performance and light transmittance, but also meets the requirement for the anti-glare performance of the colored ribbon. Furthermore, its excellent self-adhesive properties are more conducive to the preparation of laminated glass, preventing air bubbles or overflow problems during the lamination process and improving the quality of the laminated glass. Attached Figure Description

[0053] The invention will now be further described with reference to the accompanying drawings.

[0054] Figure 1 This is a schematic diagram of the structure of the anti-glare and sound-insulating colored intermediate film of the present invention. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] Unless otherwise specified, the experimental methods used in the following embodiments are conventional methods, performed according to the techniques or conditions described in the literature in this field or according to the product instructions. Unless otherwise specified, the materials and reagents used in the following embodiments are commercially available; for example, the specific raw materials involved in the following embodiments are:

[0057] Polyvinyl alcohol acetal resin: PVB, with a protective acetalization degree of 50%, a molecular weight of 100,000, and a molecular weight distribution index of 2.

[0058] Plasticizer: Triethylene glycol diisooctanoate;

[0059] Anti-glare particles: a mixture of TiO2 and SiO2 in a mass ratio of 1:1;

[0060] Inorganic filler: Nano-silica (particle size 20-50um);

[0061] Coupling agent: KH-550;

[0062] Inorganic pigment oil: a mixture of pigment blue, ochre yellow, and pigment black in a mass ratio of 1:1:1;

[0063] Antioxidant: A mixture of antioxidant 168 and antioxidant 1010 in a mass ratio of 1:1;

[0064] Ultraviolet absorber: UV-329;

[0065] Light stabilizer: Light stabilizer 744;

[0066] Adhesion modifier: A mixture of potassium hydroxide, potassium acetate, and water in a mass ratio of 0.15:0.5:10.

[0067] Example 1

[0068] This embodiment discloses an anti-glare and sound-insulating colored intermediate film, which is carried out in the following steps:

[0069] Step 1: Prepare the anti-glare ribbon layer;

[0070] Step A1: Prepare 80kg of polyvinyl acetal resin, 25kg of plasticizer, 0.15kg of anti-glare particles, 0.8kg of inorganic filler, 0.5kg of coupling agent, 0.5kg of inorganic color oil, 0.008kg of antioxidant, 0.02kg of ultraviolet absorber, and 0.015kg of light stabilizer;

[0071] Step A2: Mix the plasticizer, antioxidant, ultraviolet absorber and light stabilizer, heat to 70°C and stir to dissolve, then add inorganic color oil and coupling agent and mix evenly, then grind to a particle size ≤5um, filter to obtain color paste;

[0072] Step A3: Mix the anti-glare particles and half the weight of polyvinyl acetal resin and grind them at 2200 rpm for 3 hours to obtain an anti-glare resin mixture.

[0073] Step A4: Mix the inorganic filler and the remaining polyvinyl acetal resin and grind them at 2200 rpm for 3 hours to obtain inorganic filler resin mixture A;

[0074] Step A5: Mix the color paste, anti-glare resin mixture, and inorganic filler resin mixture A evenly, and then extrude the mixture using a twin-screw extruder at 180°C and 680 rpm to obtain an anti-glare ribbon layer with a thickness of 0.40 mm.

[0075] Step 2: Prepare the sound insulation intermediate layer;

[0076] Step B1: Prepare 70 kg of polyvinyl acetal resin, 30 kg of plasticizer, 1 kg of inorganic filler, 0.5 kg of coupling agent, 0.1 kg of adhesion modifier, 0.01 kg of antioxidant, 0.02 kg of ultraviolet absorber, and 0.015 kg of light stabilizer;

[0077] Step B2: Mix the plasticizer, antioxidant, ultraviolet absorber and light stabilizer, heat to 60-80℃ and stir to dissolve to obtain a plasticizer mixture;

[0078] Step B3: Mix the inorganic filler and polyvinyl acetal resin and grind them at 2200 rpm for 3 hours to obtain inorganic filler resin mixture B;

[0079] Step B4: Mix the plasticizer mixture, inorganic filler resin mixture B, coupling agent and adhesion modifier evenly, and then extrude the mixture through a twin-screw extruder at 180°C and 680 rpm to obtain a sound insulation intermediate layer with a thickness of 0.60 mm.

[0080] Step 3: Cut two glare-reducing colored ribbon layers and one sound-insulating intermediate layer to a size of 10×10mm. Stack the sound-insulating intermediate layer between the two anti-glare colored ribbon layers, and plasticize and composite them using a twin-screw extruder at a die temperature of 170℃. The resulting anti-glare and sound-insulating colored intermediate film is then formed by pressure rollers.

[0081] Example 2

[0082] This embodiment discloses an anti-glare and sound-insulating colored intermediate film. Compared with Embodiment 1, the only difference is that in step A1, the prepared component amounts are: 70 kg of polyvinyl acetal resin, 15 kg of plasticizer, 0.025 kg of anti-glare particles, 0.3 kg of inorganic filler, 0.1 kg of coupling agent, 0.15 kg of inorganic color oil, 0.001 kg of antioxidant, 0.005 kg of ultraviolet absorber, and 0.005 kg of light stabilizer.

[0083] Keeping the other steps and conditions the same, the anti-glare and sound-insulating colored intermediate film is finally obtained.

[0084] Example 3

[0085] This embodiment discloses an anti-glare and sound-insulating colored intermediate film. Compared with Embodiment 1, the only difference is that in step A1, the prepared component amounts are: 90 kg of polyvinyl acetal resin, 35 kg of plasticizer, 0.25 kg of anti-glare particles, 1.5 kg of inorganic filler, 1 kg of coupling agent, 1 kg of inorganic color oil, 0.015 kg of antioxidant, 0.04 kg of ultraviolet absorber, and 0.025 kg of light stabilizer.

[0086] Keeping the other steps and conditions the same, the anti-glare and sound-insulating colored intermediate film is finally obtained.

[0087] Example 4

[0088] This embodiment discloses an anti-glare and sound-insulating colored intermediate film. Compared with Embodiment 1, the only difference is that in step B1, the prepared component amounts are: 60 kg of polyvinyl acetal resin, 20 kg of plasticizer, 0.4 kg of inorganic filler, 0.3 kg of coupling agent, 0.05 kg of adhesion modifier, 0.001 kg of antioxidant, 0.005 kg of ultraviolet absorber, and 0.005 kg of light stabilizer.

[0089] Keeping the other steps and conditions the same, the anti-glare and sound-insulating colored intermediate film is finally obtained.

[0090] Example 5

[0091] This embodiment discloses an anti-glare and sound-insulating colored intermediate film. Compared with Embodiment 1, the only difference is that in step B1, the prepared component amounts are: 80 kg of polyvinyl acetal resin, 80 kg of plasticizer, 2 kg of inorganic filler, 1 kg of coupling agent, 0.15 kg of adhesion modifier, 0.015 kg of antioxidant, 0.04 kg of ultraviolet absorber, and 0.025 kg of light stabilizer.

[0092] Keeping the other steps and conditions the same, the anti-glare and sound-insulating colored intermediate film is finally obtained.

[0093] Example 6

[0094] This embodiment discloses an anti-glare and sound-insulating colored intermediate film. Compared with Embodiment 1, the only difference is that in both steps A2 and B2, the film is heated to 60°C and stirred to dissolve.

[0095] Keeping the other steps and conditions the same, the anti-glare and sound-insulating colored intermediate film is finally obtained.

[0096] Example 7

[0097] This embodiment discloses an anti-glare and sound-insulating colored intermediate film. Compared with Embodiment 1, the only difference is that in both steps A2 and B2, the film is heated to 80°C and stirred to dissolve.

[0098] Keeping the other steps and conditions the same, the anti-glare and sound-insulating colored intermediate film is finally obtained.

[0099] Comparative Example 1

[0100] This embodiment discloses an intermediate film, which differs from Embodiment 1 only in that the anti-glare particles are removed;

[0101] Keeping the other steps and conditions the same, the anti-glare and sound-insulating colored intermediate film is finally obtained.

[0102] Comparative Example 2

[0103] This embodiment discloses an intermediate membrane, which differs from Embodiment 1 only in that the inorganic filler is removed;

[0104] Keeping the other steps and conditions the same, the anti-glare and sound-insulating colored intermediate film is finally obtained.

[0105] The anti-glare and sound-insulating colored interlayer films prepared in Examples 1-7 and Comparative Examples 1-2 were subjected to performance tests, including tests on appearance, thickness, light transmittance, impact value, tensile strength, illuminance, sound insulation, and self-adhesion. The test methods are as follows:

[0106] Appearance: Visual inspection

[0107] Thickness: Refer to GB / T6672-2001 Method for Determination of Thickness of Plastic Films and Sheets;

[0108] Light transmittance: Refer to GB / T2410-2008 Method for Determination of Light Transmittance and Haze of Transparent Plastics;

[0109] Impact value: The test shall be conducted in accordance with the provisions of JC / T2166-2013. The anti-glare and sound-insulating colored intermediate film sample shall be placed in a low temperature chamber at -18°C for 2 hours, and then immediately placed on a support at a 30° angle to the horizontal table. The sample shall be repeatedly struck with a 0.45kg steel hammer until the glass on the surface of the sample is completely broken. The force should be strong enough to break the glass. The film shall remain intact after the impact. The test shall be completed within 3 minutes.

[0110] Tensile strength: Measured using a microcomputer-controlled electronic universal testing machine (tensile tester). The anti-glare and sound-insulating colored intermediate film sample was made into a dumbbell-shaped specimen. The test speed was 100±10mm / min and the gauge length was 25mm.

[0111] Illuminance: Measured using an illuminance meter under laser irradiation; the higher the illuminance, the more severe the damage to the human eye.

[0112] Sound insulation: A standard specimen was fabricated by sandwiching an interlayer membrane between two 3mm float glass sheets and allowed to stand for 48 hours to eliminate internal stress. Sound source chamber: Four random sound source points were arranged (1m from the specimen, 1.2m high), with a sound pressure level of 100dB±0.5dB. Receiving chamber: Nine microphone measuring points (3×3 grid) were set up 0.5m behind the specimen to measure the spatial average sound pressure level. Dense sampling was conducted in the coincidence valley frequency band, and the sound insulation was recorded.

[0113] Self-adhesion: Place the anti-glare and sound-insulating colored interlayer film sample on a rotating glass roller and rotate it continuously at 600 rpm for 3 minutes, and record whether the interlayer film falls off.

[0114] The test results are listed in Table 1, as follows:

[0115] Table 1 Performance test results of anti-glare and sound-insulating colored interlayer film

[0116]

[0117]

[0118] Analysis of the data in Table 1 shows that, compared with Comparative Example 1, the illuminance of the anti-glare and sound-insulating colored intermediate films prepared in Examples 1-7 and Comparative Example 2 is significantly lower, and the self-adhesion is not detached. This indicates that adding anti-glare particles can reduce the illuminance of the intermediate film to a certain extent, improve the anti-glare performance, and improve the self-adhesion of the intermediate film.

[0119] Compared to Comparative Example 2, Examples 1-7 and Comparative Example 1 showed significantly higher sound insulation. This may be because the addition of inorganic fillers can increase the density of the interlayer membrane to enhance its ability to scatter sound waves. Therefore, the addition of inorganic fillers can improve the sound insulation effect of the interlayer membrane.

[0120] Meanwhile, compared with Comparative Examples 1-2, Examples 1-7 have superior tensile strength and impact value, and also have significantly stronger sound insulation and anti-glare effects as well as excellent self-adhesive properties.

[0121] Next, laminated glass was prepared using the interlayer films obtained in Examples 1-7 and Comparative Examples 1-2, and its performance was tested, including strength, bubble condition, and overflow phenomenon. The specific preparation and testing methods are as follows:

[0122] Compressive strength: Cut two pieces of float glass with dimensions of 100 mm × 25 mm × 3 mm. Cut the intermediate film into a rectangle of 25 mm × 12.5 mm and sandwich it in the glass lap joint area (bonding area 12.5 mm × 25 mm). Cure it through the autoclave process. First, perform cold extraction at -90 KPa for 20 min, then perform hot extraction at 135 °C and -90 KPa for 30 min. After exhausting the air, maintain the pressure at 135 °C and 1.4 MPa for 2 h to obtain laminated glass. Use a universal testing machine to stretch the specimen at a speed of 10 mm / min and record the maximum failure load.

[0123] Bubble condition: Mark a 100 mm × 100 mm area at the center of the specimen and observe and judge it with a magnifying glass with scale (10 times). If the bubble diameter ≤ 0.5 mm and the number ≤ 3 bubbles / 100 cm 2 it is qualified; if there are bubbles with a diameter > 1 mm or a dense bubble cluster (> 5 bubbles / cm 2 ) it is unqualified.

[0124] Overflow phenomenon: Cut the intermediate film into a square of 20 mm × 20 mm and sandwich it between two glass sheets of 75 mm × 25 mm (leave a 10 mm hanging end after laminating). Hang it vertically in an oven at 150 °C and apply a load by hanging a 500 g weight at the lower end. After cooling for 1 hour, measure the length of the film material overflowing from the glass edge.

[0125] List the test results in Table 2 as follows:

[0126] Table 2 Performance test results of laminated glass

[0127]

[0128] Analyzing the data in Table 2, it can be known that compared with Comparative Examples 1-2, the laminated glass prepared corresponding to Examples 1-7 has higher compressive strength; compared with Comparative Example 1, the laminated glass prepared corresponding to Examples 1-7 and Comparative Example 2 has no bubble phenomenon and overflow phenomenon; this shows that Examples 1-7 have significantly better comprehensive performance compared with Comparative Examples 1-2.

[0129] The above has described multiple embodiments of the present invention in detail, but the content described is only the preferred embodiments of the present invention and cannot be considered as defining the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the present invention application should still fall within the scope covered by the patent of the present invention.

Claims

1. A colored interlayer film for anti-glare and sound insulation, characterized in that, It includes two layers of anti-glare ribbons and a sound-insulating intermediate layer superimposed between the two layers of anti-glare ribbons; The anti-glare ribbon layer comprises the following components by weight: 70-90 parts polyvinyl acetal resin, 15-35 parts plasticizer, 0.025-0.25 parts anti-glare particles, 0.3-1.5 parts inorganic filler, 0.1-1 part coupling agent, 0.15-1 part inorganic color oil, 0.001-0.015 parts antioxidant, 0.005-0.04 parts ultraviolet absorber, and 0.005-0.025 parts light stabilizer; The sound insulation intermediate layer comprises the following components by weight: 60-80 parts of polyvinyl acetal resin, 20-40 parts of plasticizer, 0.4-2 parts of inorganic filler, 0.3-1 parts of coupling agent, 0.05-0.15 parts of adhesion modifier, 0.001-0.015 parts of antioxidant, 0.005-0.04 parts of ultraviolet absorber, and 0.005-0.025 parts of light stabilizer.

2. The anti-glare and sound-insulating colored interlayer film according to claim 1, characterized in that, The anti-glare particles include any one or more combinations of metal oxide particles, non-metal oxide particles, composite oxide microspheres, porous oxide particles, and hollow oxide particles.

3. The anti-glare and sound-insulating colored interlayer film according to claim 1, characterized in that, The inorganic color oil is gray, green, blue, or brown.

4. The anti-glare and sound-insulating colored interlayer film according to claim 1, characterized in that, The total thickness of the anti-glare and sound-insulating colored intermediate film is 0.38-1.52 mm.

5. The anti-glare and sound-insulating colored interlayer film according to claim 1, characterized in that, The surface illuminance of the anti-glare and sound-insulating colored intermediate film is <1000 lux, and the visible light transmittance is 70-90%.

6. A preparation method, characterized in that, The method for preparing the anti-glare and sound-insulating colored intermediate film as described in any one of claims 1-5 comprises the following steps: Step 1: Prepare the anti-glare ribbon layer; Step A1: Prepare the components of the anti-glare ribbon layer according to the weight proportions; Step A2: Mix the plasticizer, antioxidant, ultraviolet absorber and light stabilizer, heat to 60-80℃ and stir to dissolve, then add inorganic color oil and coupling agent and mix evenly, then grind to a particle size ≤5um, filter to obtain color paste; Step A3: Mix the anti-glare particles and half the weight of polyvinyl acetal resin and grind them to obtain an anti-glare resin mixture; Step A4: Mix the inorganic filler and the remaining polyvinyl acetal resin and grind them to obtain inorganic filler resin mixture A; Step A5: Mix the color paste, anti-glare resin mixture, and inorganic filler resin mixture A evenly, and then extrude the mixture through an extruder to obtain an anti-glare ribbon layer; Step 2: Prepare the sound insulation intermediate layer; Step B1: Analyze the components of the sound insulation intermediate layer according to their weight proportions; Step B2: Mix the plasticizer, antioxidant, ultraviolet absorber and light stabilizer, heat to 60-80℃ and stir to dissolve to obtain a plasticizer mixture; Step B3: Mix the inorganic filler and polyvinyl acetal resin and grind them to obtain inorganic filler resin mixture B; Step B4: Mix the plasticizer mixture, inorganic filler resin mixture B, coupling agent and adhesion modifier evenly, and then extrude the mixture through an extruder to obtain the sound insulation intermediate layer; Step 3: The sound insulation intermediate layer is stacked between the two anti-glare colored strip layers, plasticized and composited by an extruder, and then formed by a pressure roller to obtain an anti-glare and sound insulation colored intermediate film.

7. The preparation method according to claim 6, characterized in that, In steps A3, A4 and B3, the grinding conditions are: grinding at 2000-2500 rpm for 2-4 hours.

8. The preparation method according to claim 6, characterized in that, In step three, the extruder is a twin-screw extruder, and the die temperature of the extruder is 160-185℃.

9. A laminated glass, characterized in that, It comprises two layers of float glass, with an anti-glare and sound-insulating colored interlayer film as described in any one of claims 1-5 stacked between the two layers of float glass.

10. The laminated glass according to claim 9, characterized in that, The method for preparing the laminated glass is as follows: an anti-glare and sound-insulating colored interlayer film is placed between two layers of float glass and laminated together. First, it is cold-drawn at -90KPa for 20 minutes, then hot-drawn at 130-140℃ and -90KPa for 30 minutes. After degassing, it is pressure-held at 130-140℃ and 1.3-1.5MPa for 2 hours to obtain the laminated glass.

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