阅读说明：本技术 一种汽车天窗玻璃用pdlc调光膜的封边工艺 (Edge sealing process of PDLC (polymer dispersed liquid crystal) dimming film for automobile skylight glass ) 是由 赵华山 严中华 陈新 卢斌 郑爱波 张竹青 彭婷婷 于 2021-08-27 设计创作，主要内容包括：一种汽车天窗玻璃用PDLC调光膜的封边工艺,它包括以下步骤：S1、将PDLC膜片有电极沟槽处和非电极也有沟槽处的一面朝上平铺在打胶台上清洁；S2、电极沟槽处和非电极沟槽处打胶；S3、用刀片将高出沟槽边部的胶刮平；S4、将PDLC膜片放到固化箱进行固化,继续PDLC膜片只有电极沟槽的另一面沟槽处封胶；S5、重复S1的膜片检查和清洁步骤、S2的打胶和S3的刮平步骤,二次固化。本发明的优点是：能有效延长汽车天窗玻璃的使用寿命。(A edge sealing process of a PDLC (polymer dispersed liquid crystal) light adjusting film for automobile skylight glass comprises the following steps: s1, spreading the PDLC membrane with the electrode groove and the non-electrode surface with the groove upward on a gluing table for cleaning; s2, gluing the electrode groove and the non-electrode groove; s3, scraping the glue higher than the edge of the groove by a blade; s4, placing the PDLC membrane in a curing box for curing, and continuously sealing glue on the PDLC membrane only on the other side groove of the electrode groove; and S5, repeating the membrane checking and cleaning step of S1, the gluing step of S2 and the strickling step of S3, and performing secondary curing. The invention has the advantages that: the service life of the automobile skylight glass can be effectively prolonged.)

1. A edge sealing process of a PDLC (polymer dispersed liquid crystal) light adjusting film for automobile skylight glass is characterized by comprising the following steps:

s1, laying the PDLC membrane with the electrode groove and the non-electrode surface with the groove upward on a gluing table; checking the diaphragm to ensure that no obvious scratch exists, and cleaning the residual liquid crystal in the peripheral groove of the diaphragm and the inner side groove of the electrode; cleaning the interior of the groove by using dust-free cloth stained with alcohol;

s2, gluing the electrode groove and the non-electrode groove, wherein the gluing height needs to be 0.1-0.2mm higher than the edge of the groove, the groove needs to be completely filled, no break point or gap exists, and the air pressure of the gluing machine is set to be 0.3-0.5 Mpa;

s3, scraping the glue higher than the edge of the groove by a blade, scraping the glue towards the inner side of the groove during glue scraping, scraping the redundant glue onto the outer protective film of the PDLC membrane, scraping the glue on the outer protective film of the PDLC membrane to be thin and not to be blocked, and not sticking the glue on the electrode lead; spreading the PDLC film with the glue on the interlayer of the shelf;

s4, pushing the shelf with the PDLC membrane placed in the curing box for curing, opening a door to cool after curing is finished, pushing the shelf out of the curing box at 40 ℃, and continuing sealing the PDLC membrane at the other side groove of the electrode groove when the outside is cooled to the temperature which is not too hot;

s5, turning the glued and cured surface downwards to enable the other surface of the PDLC membrane with the electrode groove to face upwards, then flatly laying the PDLC membrane on a gluing table to repeat the membrane checking and cleaning step S1, the gluing step S2 and the strickling step S3, pushing the PDLC membrane to a curing box again for secondary curing, after curing is finished, opening a door to cool, and pushing the shelf out of the curing box at 40 ℃;

s6, inspecting the secondarily cured membrane: no break point, no missing hitting and inner side edge gap can be caused, residual glue accumulation can not be caused in a non-protection area, and if the residual glue accumulation exists, the residual glue accumulation needs to be flattened by a blade; if a break point, a missing hit or an inner side edge gap occurs, secondary glue filling is needed, and curing is carried out again.

2. The edge sealing process of the PDLC light-adjusting film for the automobile skylight glass according to claim 1, wherein the thickness of the PDLC light-adjusting film is 0.4mm, the periphery of the film is subjected to trenching treatment, liquid crystal in a groove is cleaned up, the PDLC film is horizontally placed according to the original package and stored at room temperature, and the storage period is not more than 12 months.

3. The edge sealing process of the PDLC light adjusting film for the automobile skylight glass as claimed in claim 1, wherein the PDLC film qualified in secondary curing is horizontally placed according to the original package and stored in a room temperature environment.

4. The edge sealing process of the PDLC light adjusting film for the automobile skylight glass according to claim 1, characterized in that in the curing of S4 and the secondary curing of S5, the parameters of a curing box are set as follows: and (3) putting the PDLC membrane into a curing box, raising the temperature from room temperature to 75-81 ℃ within 17-27min, keeping the constant temperature for 25-35min, and then opening a box door to reduce the temperature.

5. The edge sealing process of the PDLC light adjusting film for the automobile skylight glass according to claim 1, wherein the specific method for re-curing in S6 comprises the following steps: and (3) putting the PDLC membrane into a curing box, raising the temperature from room temperature to 75-81 ℃ within 17-27min, keeping the constant temperature for 25-35min, and then opening a box door to reduce the temperature.

6. The edge sealing process of the PDLC light adjusting film for the automobile skylight glass according to claim 1, characterized in that in the step S2, the environment temperature is controlled to be 20-30 ℃ during gluing.

7. The edge sealing process of the PDLC light adjusting film for the automobile skylight glass according to claim 1, wherein in the step S2, a single-component epoxy pouring sealant with the model of MF1535Y is adopted for gluing.

8. The edge sealing process of the PDLC light adjusting film for the automobile skylight glass according to claim 1, characterized in that glue is applied to the electrode grooves and the non-electrode grooves in S2, the glue applying height is 0.2mm higher than the groove edges, and the air pressure of the glue applying machine is set to be 0.4 MPa.

Technical Field

The invention relates to the technical field of automobile glass, in particular to an edge sealing process of a PDLC (polymer dispersed liquid crystal) light adjusting film for automobile skylight glass.

Background

In recent decades, an emerging photovoltaic material called Polymer Dispersed Liquid Crystal (PDLC) has been a research hotspot of researchers. The polymer dispersed liquid crystal has the advantages of simple preparation process, short response time, high speed, no need of a polarizing device and the like, and is gradually applied to a plurality of electronic elements such as light valves, gratings, light-transmitting projection screens, dimming glasses and the like. The light-adjusting glass is also called as an electronic curtain, and the working principle is as follows: when the power supply of the light adjusting glass is turned off, the liquid crystal molecules in the light adjusting glass are in an irregular dispersion state, at the moment, the light is scattered, and the light adjusting glass is in an opaque state; when the power supply of the light adjusting glass is turned on, the liquid crystal molecules in the light adjusting glass are in a neat arrangement state, at the moment, light can freely penetrate through the light adjusting glass, and the light adjusting glass is in a light-transmitting state. Because of its dimming property, the dimming glass has been widely used in high-grade places such as office buildings, medical institutions, commercial displays, and the like.

However, the edge sealing process of the PDLC light-adjusting film on the panoramic sunroof glass of the automobile is rarely reported.

Disclosure of Invention

The invention aims to provide an edge sealing process of a PDLC (polymer dispersed liquid crystal) light adjusting film for automobile skylight glass.

A edge sealing process of a PDLC (polymer dispersed liquid crystal) light adjusting film for automobile skylight glass comprises the following steps:

s1, laying the PDLC membrane with the electrode groove and the non-electrode surface with the groove upward on a gluing table; checking the diaphragm to ensure that no obvious scratch exists, and cleaning the residual liquid crystal in the peripheral groove of the diaphragm and the inner side groove of the electrode; cleaning the interior of the groove by using dust-free cloth stained with alcohol;

s2, gluing the electrode groove and the non-electrode groove, wherein the gluing height needs to be 0.1-0.2mm higher than the edge of the groove, the groove needs to be completely filled, no break point or gap exists, and the air pressure of the gluing machine is set to be 0.3-0.5 Mpa;

s3, scraping the glue higher than the edge of the groove by a blade, scraping the glue towards the inner side of the groove during glue scraping, scraping the redundant glue onto the outer protective film of the PDLC membrane, scraping the glue on the outer protective film of the PDLC membrane to be thin and not to be blocked, and not sticking the glue on the electrode lead; spreading the PDLC film with the glue on the interlayer of the shelf;

s4, pushing the shelf with the PDLC membrane placed in the curing box for curing, opening a door to cool after curing is finished, pushing the shelf out of the curing box at 40 ℃, and continuing sealing the PDLC membrane at the other side groove of the electrode groove when the outside is cooled to the temperature which is not too hot;

s5, turning the glued and cured surface downwards to enable the other surface of the PDLC membrane with the electrode groove to face upwards, then flatly laying the PDLC membrane on a gluing table to repeat the membrane checking and cleaning step S1, the gluing step S2 and the strickling step S3, pushing the PDLC membrane to a curing box again for secondary curing, after curing is finished, opening a door to cool, and pushing the shelf out of the curing box at 40 ℃;

s6, inspecting the secondarily cured membrane: no break point, no missing hitting and inner side edge gap can be caused, residual glue accumulation can not be caused in a non-protection area, and if the residual glue accumulation exists, the residual glue accumulation needs to be flattened by a blade; if a break point, a missing hit or an inner side edge gap occurs, secondary glue filling is needed, and curing is carried out again.

The thickness of the PDLC light modulation film is 0.4mm, the periphery of the diaphragm is subjected to trenching treatment, liquid crystal in the trench is cleaned, the PDLC film is horizontally placed according to the original package and stored at room temperature, and the storage period is not more than 12 months.

And placing the PDLC film qualified by secondary curing horizontally according to the original package, and storing the PDLC film in a room temperature environment.

In the curing of S4 and the secondary curing step of S5, curing box parameters were set to: and (3) putting the PDLC membrane into a curing box, raising the temperature from room temperature to 75-81 ℃ within 17-27min, keeping the constant temperature for 25-35min, and then opening a box door to reduce the temperature.

The specific method for re-curing in S6 is as follows: and (3) putting the PDLC membrane into a curing box, raising the temperature from room temperature to 75-81 ℃ within 17-27min, keeping the constant temperature for 25-35min, and then opening a box door to reduce the temperature.

And in the step S2, the environmental temperature is controlled to be 20-30 ℃ during gluing.

In the step S2, a single-component epoxy potting adhesive is used for the glue application, and the model is MF 1535Y.

And (S2) gluing the electrode grooves and the non-electrode grooves, wherein the gluing height is 0.2mm higher than the edges of the grooves, and the air pressure of the gluing machine is set to be 0.4 Mpa.

The invention has the advantages that: the service life of the automobile skylight glass can be effectively prolonged.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments.

< example 1>

A edge sealing process of a PDLC (polymer dispersed liquid crystal) light adjusting film for automobile skylight glass comprises the following steps:

s1, laying the PDLC membrane with the electrode groove and the non-electrode surface with the groove upward on a gluing table; checking the diaphragm to ensure that no obvious scratch exists, and cleaning the residual liquid crystal in the peripheral groove of the diaphragm and the inner side groove of the electrode; cleaning the interior of the groove by using dust-free cloth stained with alcohol;

s2, gluing the electrode groove and the non-electrode groove, wherein the gluing height needs to be 0.1mm higher than the edge of the groove, the groove needs to be completely filled, no break point or gap exists, and the air pressure of the gluing machine is set to be 0.3 Mpa;

s3, scraping the glue higher than the edge of the groove by a blade, scraping the glue towards the inner side of the groove during glue scraping, scraping the redundant glue onto the outer protective film of the PDLC membrane, scraping the glue on the outer protective film of the PDLC membrane to be thin and not to be blocked, and not sticking the glue on the electrode lead; spreading the PDLC film with the glue on the interlayer of the shelf;

s4, pushing the shelf with the PDLC membrane placed in the curing box for curing, opening a door to cool after curing is finished, pushing the shelf out of the curing box at 40 ℃, and continuing sealing the PDLC membrane at the other side groove of the electrode groove when the outside is cooled to the temperature which is not too hot;

s5, turning the glued and cured surface downwards to enable the other surface of the PDLC membrane with the electrode groove to face upwards, then flatly laying the PDLC membrane on a gluing table to repeat the membrane checking and cleaning step S1, the gluing step S2 and the strickling step S3, pushing the PDLC membrane to a curing box again for secondary curing, after curing is finished, opening a door to cool, and pushing the shelf out of the curing box at 40 ℃;

s6, inspecting the secondarily cured membrane: no break point, no missing hitting and inner side edge gap can be caused, residual glue accumulation can not be caused in a non-protection area, and if the residual glue accumulation exists, the residual glue accumulation needs to be flattened by a blade; if a break point, a missing hit or an inner side edge gap occurs, secondary glue filling is needed, and curing is carried out again.

The thickness of the PDLC light modulation film is 0.4mm, the periphery of the diaphragm is subjected to trenching treatment, liquid crystal in the trench is cleaned, the PDLC film is horizontally placed according to the original package and stored at room temperature, and the storage period is not more than 12 months.

And placing the PDLC film qualified by secondary curing horizontally according to the original package, and storing the PDLC film in a room temperature environment.

In the curing of S4 and the secondary curing step of S5, curing box parameters were set to: the PDLC membrane is put into a curing box and then is heated to 75 ℃ from room temperature within 17min, the temperature is kept for 25min, and then the box door is opened to cool, and the curing method comprises the following specific steps:

1) pushing the shelf with the PDLC membrane to a curing box for curing;

2) turning on a power supply of the curing box, blowing air, heating and alarming, and setting parameters: SP1 (at this time, room temperature), T-1 (22. + -.5 minutes), SP2 (78. + -.3 ℃ C.), T-2 (30. + -.5 minutes), SP3 (78. + -.3 ℃ C.), T-3 (-121);

3) and when the program stops running and the solidification is finished, opening the door to cool. And pushing the layer frame out of the curing box at 40 ℃, and continuously sealing glue at the other side groove of the PDLC when the outside is cooled to be not hot to the hands.

The specific method for re-curing in S6 is as follows: and (3) putting the PDLC membrane into a curing box, heating the PDLC membrane from room temperature to 75 ℃ within 17min, keeping the temperature for 25min, and then opening a box door to cool.

In the step S2, the ambient temperature is controlled at 20 ℃ during gluing.

In the step S2, a single-component epoxy potting adhesive is used for the glue application, and the model is MF 1535Y.

< example 2>

A edge sealing process of a PDLC (polymer dispersed liquid crystal) light adjusting film for automobile skylight glass comprises the following steps:

s1, laying the PDLC membrane with the electrode groove and the non-electrode surface with the groove upward on a gluing table; checking the diaphragm to ensure that no obvious scratch exists, and cleaning the residual liquid crystal in the peripheral groove of the diaphragm and the inner side groove of the electrode; cleaning the interior of the groove by using dust-free cloth stained with alcohol;

s2, gluing the electrode groove and the non-electrode groove, wherein the gluing height needs to be 0.2mm higher than the edge of the groove, the groove needs to be completely filled, no break point or gap exists, and the air pressure of the gluing machine is set to be 0.5 Mpa;

s3, scraping the glue higher than the edge of the groove by a blade, scraping the glue towards the inner side of the groove during glue scraping, scraping the redundant glue onto the outer protective film of the PDLC membrane, scraping the glue on the outer protective film of the PDLC membrane to be thin and not to be blocked, and not sticking the glue on the electrode lead; spreading the PDLC film with the glue on the interlayer of the shelf;

s4, pushing the shelf with the PDLC membrane placed in the curing box for curing, opening a door to cool after curing is finished, pushing the shelf out of the curing box at 40 ℃, and continuing sealing the PDLC membrane at the other side groove of the electrode groove when the outside is cooled to the temperature which is not too hot;

s5, turning the glued and cured surface downwards to enable the other surface of the PDLC membrane with the electrode groove to face upwards, then flatly laying the PDLC membrane on a gluing table to repeat the membrane checking and cleaning step S1, the gluing step S2 and the strickling step S3, pushing the PDLC membrane to a curing box again for secondary curing, after curing is finished, opening a door to cool, and pushing the shelf out of the curing box at 40 ℃;

s6, inspecting the secondarily cured membrane: no break point, no missing hitting and inner side edge gap can be caused, residual glue accumulation can not be caused in a non-protection area, and if the residual glue accumulation exists, the residual glue accumulation needs to be flattened by a blade; if a break point, a missing hit or an inner side edge gap occurs, secondary glue filling is needed, and curing is carried out again.

The thickness of the PDLC light modulation film is 0.4mm, the periphery of the diaphragm is subjected to trenching treatment, liquid crystal in the trench is cleaned, the PDLC film is horizontally placed according to the original package and stored at room temperature, and the storage period is not more than 12 months.

And placing the PDLC film qualified by secondary curing horizontally according to the original package, and storing the PDLC film in a room temperature environment.

In the curing of S4 and the secondary curing step of S5, curing box parameters were set to: the PDLC membrane is placed in a curing box, the temperature is raised to 81 ℃ from room temperature within 27min, the temperature is kept for 35min, then the box door is opened to cool, and the curing method comprises the following specific steps:

1) pushing the shelf with the PDLC membrane to a curing box for curing;

2) turning on a power supply of the curing box, blowing air, heating and alarming, and setting parameters: SP1 (at this time, room temperature), T-1 (22. + -.5 minutes), SP2 (78. + -.3 ℃ C.), T-2 (30. + -.5 minutes), SP3 (78. + -.3 ℃ C.), T-3 (-121);

3) and when the program stops running and the solidification is finished, opening the door to cool. And pushing the layer frame out of the curing box at 40 ℃, and continuously sealing glue at the other side groove of the PDLC when the outside is cooled to be not hot to the hands.

The specific method for re-curing in S6 is as follows: and (3) putting the PDLC membrane into a curing box, raising the temperature from room temperature to 81 ℃ within 27min, keeping the constant temperature for 35min, and then opening a box door to reduce the temperature.

In the step S2, the ambient temperature is controlled to 30 ℃ during gluing.

In the step S2, a single-component epoxy potting adhesive is used for the glue application, and the model is MF 1535Y.

< example 3>

A edge sealing process of a PDLC (polymer dispersed liquid crystal) light adjusting film for automobile skylight glass comprises the following steps:

s1, laying the PDLC membrane with the electrode groove and the non-electrode surface with the groove upward on a gluing table; checking the diaphragm to ensure that no obvious scratch exists, and cleaning the residual liquid crystal in the peripheral groove of the diaphragm and the inner side groove of the electrode; cleaning the interior of the groove by using dust-free cloth stained with alcohol;

s2, gluing the electrode groove and the non-electrode groove, wherein the gluing height needs to be 0.2mm higher than the edge of the groove, the groove needs to be completely filled, no break point or gap exists, and the air pressure of the gluing machine is set to be 0.4 Mpa;

s3, scraping the glue higher than the edge of the groove by a blade, scraping the glue towards the inner side of the groove during glue scraping, scraping the redundant glue onto the outer protective film of the PDLC membrane, scraping the glue on the outer protective film of the PDLC membrane to be thin and not to be blocked, and not sticking the glue on the electrode lead; spreading the PDLC film with the glue on the interlayer of the shelf;

s4, pushing the shelf with the PDLC membrane placed in the curing box for curing, opening a door to cool after curing is finished, pushing the shelf out of the curing box at 40 ℃, and continuing sealing the PDLC membrane at the other side groove of the electrode groove when the outside is cooled to the temperature which is not too hot;

s5, turning the glued and cured surface downwards to enable the other surface of the PDLC membrane with the electrode groove to face upwards, then flatly laying the PDLC membrane on a gluing table to repeat the membrane checking and cleaning step S1, the gluing step S2 and the strickling step S3, pushing the PDLC membrane to a curing box again for secondary curing, after curing is finished, opening a door to cool, and pushing the shelf out of the curing box at 40 ℃;

s6, inspecting the secondarily cured membrane: no break point, no missing hitting and inner side edge gap can be caused, residual glue accumulation can not be caused in a non-protection area, and if the residual glue accumulation exists, the residual glue accumulation needs to be flattened by a blade; if a break point, a missing hit or an inner side edge gap occurs, secondary glue filling is needed, and curing is carried out again.

The thickness of the PDLC light modulation film is 0.4mm, the periphery of the diaphragm is subjected to trenching treatment, liquid crystal in the trench is cleaned, the PDLC film is horizontally placed according to the original package and stored at room temperature, and the storage period is not more than 12 months.

And placing the PDLC film qualified by secondary curing horizontally according to the original package, and storing the PDLC film in a room temperature environment.

In the curing of S4 and the secondary curing step of S5, curing box parameters were set to: the PDLC membrane is placed in a curing box, the temperature is raised to 78 ℃ from room temperature within 22min, the temperature is kept for 30min, then the box door is opened, the temperature is reduced, and the curing method specifically comprises the following steps:

1) pushing the shelf with the PDLC membrane to a curing box for curing;

2) turning on a power supply of the curing box, blowing air, heating and alarming, and setting parameters: SP1 (at this time, room temperature), T-1 (22. + -.5 minutes), SP2 (78. + -.3 ℃ C.), T-2 (30. + -.5 minutes), SP3 (78. + -.3 ℃ C.), T-3 (-121);

3) and when the program stops running and the solidification is finished, opening the door to cool. And pushing the layer frame out of the curing box at 40 ℃, and continuously sealing glue at the other side groove of the PDLC when the outside is cooled to be not hot to the hands.

The specific method for re-curing in S6 is as follows: and (3) putting the PDLC membrane into a curing box, raising the temperature from room temperature to 78 ℃ within 22min, keeping the constant temperature for 30min, and then opening the box door to reduce the temperature.

In the step S2, the ambient temperature is controlled to 25 ℃ during gluing.

In the step S2, a single-component epoxy potting adhesive is used for the glue application, and the model is MF 1535Y.

The above embodiments are merely illustrative of the technical solutions and features of the present invention, and the purpose thereof is to better enable those skilled in the art to practice the invention, and it is not intended to limit the scope of the invention, and all equivalent changes and modifications made according to the spirit of the present invention are within the scope of the present invention, wherein the prior art is not described in detail.