WO2018113003A1 - Product having internal humidity adjusting function - Google Patents

Abstract

A product having an internal humidity adjusting function, comprising a cavity. A humidity adjusting mixture (3) is packaged in the cavity. A microporous membrane material (1) covers at least one side surface of the cavity. The humidity adjusting mixture (3) uses a substance, SiO2 with a high specific surface area, as a main component, and a super absorbent resin, a desiccant, and a molecular sieve as adjuvants. SiO2 and one or more of the adjuvants are mixed in proportion.

Description

Product with internal humidity adjustment function Technical field

The present invention relates to the field of humidity regulation, and more particularly to an article for adjusting the internal humidity of a high specific surface area silica SiO ₂ material for a network camera, an automobile lamp, and a camera.

Background technique

Network cameras, car lights (such as LED cold light source lights) and other small micro-sealed shell products inside the micro-moisture humid air on the smooth and transparent shell surface caused by condensation condensation, making network cameras, car lights The optical performance does not work properly. After the inside of the transparent casing of the network camera is fogged and condensed, the monitoring image is a piece of white flower. At this time, the monitoring object is in an invalid monitoring state, which may cause an event to occur; after the interior of the car lamp is fogged, the transparent lamp cover of the lamp is transparent. Light performance has dropped dramatically, affecting driving safety.

For this reason, some small micro-sealed casings such as network cameras and car lights are placed with desiccant packs or molecular sieve adsorbents, and some have vent holes on the small miniature sealed casings such as network cameras and car lights. Covering the gas permeable microporous membrane, the above measures are not effective; the desiccant pack or the molecular sieve is saturated in a short time after adsorbing the water vapor, and the water vapor adsorbed by the desiccant pack or the molecular sieve needs to be separated and heated by Baidu. The network camera, car lights, etc. are generally used in the working environment of -40 ° C ~ 70 ° C, can not reach the temperature requirements of reversible decomposition of water vapor adsorbed by the desiccant bag or molecular sieve; in the network camera, car lights, etc. A venting hole is formed in the micro-sealed casing, and the ventilating hole is covered with the ventilating microporous film, and the humid air of the external environment (rain and fog weather) is quickly diffused and penetrates into the small micro-sealed casing to reach a saturated water vapor state, and the saturated water vapor When the dew point of the state is close to the temperature of the external atmospheric environment, the network camera and the car lamp are transparent and smooth in the wind or rain. After the casing, The fogging condensation on the inner surface of the transparent smooth casing becomes opaque, so that the monitoring light signal received by the camera is severely blocked by the fog, and the monitoring image is a piece of white flower; after the interior of the car lamp is fogged, the car is covered. The light emitted by the lamp is not far from being exposed by the fog, and the light of the lamp turns yellow. The light transmission performance of the transparent lamp cover of the lamp is drastically reduced, which affects the safety of driving.

Some small camera housings such as network cameras and car lights are equipped with desiccant packs or molecular sieve adsorbents. Some of them have venting holes on small miniature sealed housings such as network cameras and car lights. Microporous membranes, the above measures have failed to solve the technical problem of air condensation and fogging inside small miniature sealed casing products such as network cameras and automobile lamps.

Summary of the invention

The technical problem to be solved by the present invention is to provide an article having an internal humidity adjustment function, which can eliminate the micro moisture moisture inside the small miniature sealed casing product such as a network camera or a car lamp, which is generated on the inner surface of a smooth and transparent casing. The phenomenon of fog condensation causes the optical performance of network cameras and car lights to be effectively and permanently exerted.

In order to solve the above technical problem, a technical solution adopted by the present invention is to provide an article having an internal humidity adjusting function, the product comprising a cavity, the cavity is encapsulated with a humidity-conditioning mixture, and the cavity has at least one side surface covered with micro Hole membrane material.

In a preferred embodiment of the present invention, the humidity-conditioning mixture is composed of a high specific surface area silica SiO ₂ substance, and the super absorbent resin, the desiccant and the molecular sieve are used as an auxiliary material, and one or more kinds are carried out according to the ratio. mixing.

In a preferred embodiment of the invention, the microporous membrane material is an expanded polytetrafluoroethylene membrane, a non-woven fabric or a membrane having moisture absorbing ability.

In a preferred embodiment of the invention, the structure of the article is an injection molded casing, a blister casing, a film or a nonwoven fabric encapsulation structure.

In a preferred embodiment of the present invention, the injection molded product is filled with a humidity-conditioning mixture in the injection molded part casing, and one side surface of the casing is covered by a microporous membrane, and water molecules are permeated through the microporous membrane. The humidity-controlling mixture is adsorbed and accumulates inside the humidity-conditioning mixture.

In a preferred embodiment of the present invention, the film or nonwoven fabric encapsulating structure is filled with a humidity-controlling mixture in a cavity made of a microporous film, and is encapsulated by a plastic substrate, and water molecules pass through the three-sided micropores. The membrane is adsorbed by the humidity-conditioning mixture and accumulates inside the humidity-conditioning mixture.

In a preferred embodiment of the present invention, the method for manufacturing the injection molded product is: first, injecting a finished humidity-conditioning mixture into the injection molded case, and then covering and welding the molded product with the microporous film. Finally, dry at low temperature.

In a preferred embodiment of the invention, the article of the film or nonwoven fabric encapsulation structure is manufactured by first injecting a finished humidity-controlling mixture into a cavity made of a microporous film material, and then using a plastic film. The bottom plate and the cavity are covered and welded, and finally dried at a low temperature.

Advantageous effects of the invention are: the present invention uses the law of SiO ₂ materials in the air and release of adsorbed water molecules, and the SiO ₂ material is essential ingredients into various structural shapes humidity article, its application in the network camera, The interior of small and small sealed casings, such as automobile lights, makes the relative humidity of the air inside the small miniature sealed casings such as network cameras and car lights less than 35%, and the phenomenon of fog condensation on the inner surface of the smooth and transparent casing is basically not It will appear; thus solving the phenomenon of mist condensation on the inner surface of the smooth and transparent casing caused by the micro-moisture air inside the small miniature sealed casing products such as network cameras and car lights, even if the external environment changes greatly, The wet product stabilizes the air humidity inside the small miniature sealed casing product, so that the optical performance of the network camera and the automobile lamp is effectively exerted.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained according to these drawings without any creative work, wherein:

1 is a schematic structural view of a preferred embodiment of an article having an internal humidity adjustment function according to the present invention;

2 is a schematic view showing the structure of a preferred embodiment of the article having an internal humidity adjustment function of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Referring to FIG. 1 and FIG. 2, an embodiment of the present invention includes:

An article having an internal humidity conditioning function, the article comprising a cavity, the cavity being encapsulated with a humidity-conditioning mixture, the cavity having at least one side surface covered with a microporous membrane.

The microporous membrane material is an expanded polytetrafluoroethylene membrane, a non-woven fabric or other membrane material having moisture absorbing ability.

The humidity-conditioning mixture refers to a high specific surface area silica SiO ₂ substance as a basic component, supplemented by a mixture of a superabsorbent resin, a desiccant and a molecular sieve (such as activated carbon), wherein the desiccant refers to an iron-based deoxidizer, calcium oxide, Alumina, magnesia, cerium oxide, magnesium chloride and activated carbon.

The ratio of several formulations of the humidity control mixture is as follows:

Generally, the mixture formulation for indoor environment in the northern dry climate: 85% SiO ₂ material, 5% high water absorbing resin, 5% molecular sieve (such as activated carbon), and oxygen scavenger (such as 5% iron powder).

The mixture of generally humid southern climate is 70% SiO ₂ , 20% superabsorbent resin, 5% molecular sieve (such as activated carbon), and oxygen scavenger (such as 5% iron powder).

Formulation of mixture for humid and cold environment: 70% SiO ₂ , 10% superabsorbent resin, 10% dry oxidant (such as calcium oxide, alumina, magnesia, yttria), 5% molecular sieve (such as activated carbon), Oxygen agent (such as iron powder 5%).

Mixture formulation for indoor environment: 90% SiO ₂ material, 10% superabsorbent resin, oxygen scavenger (such as 5% iron powder).

Mixture formulation for rapid recovery performance in outdoor environments: 65% SiO ₂ , 15% superabsorbent resin, 10% desiccant, 5% dry oxidant (such as calcium oxide, alumina, magnesia, yttrium oxide) Deoxidizer (such as iron powder) 5%. Among them, the silica material generally refers to a lightweight nanosolid material in which nanometer-scale ultrafine particles are aggregated to form a nanoporous network structure, and the network pores are filled with a gaseous dispersion medium. The silica material has a white powder appearance and is non-toxic.

SiO ₂ is a lightweight nanoporous amorphous solid material with excellent thermal and thermal insulation properties. Its porosity is as high as 80-99.8%, the pore size is 1-100 nm, and the specific surface area is 200-1200 m ² /g. The density can be as low as 3kg/m ³ , and the thermal conductivity at room temperature can be as low as 0.012W/(m·k). It is precisely because of these characteristics that the material materials have a wide range of thermal, acoustic, optical, microelectronic, and particle detection. Application potential.

The SiO ₂ material has a large specific surface area and a high porosity. Most of the hydrophilicity of the surface of the SiO ₂ colloidal particles is OH. The surface of the material contains a large amount of hydrophilic groups, and the silicon hydroxy group makes it easy to adsorb water molecules in the air. ₂ substances due to its special microstructure such as three-dimensional nanoparticle skeleton (skeletal particles 2-5nm), high specific surface area, nano-scale pores, low density, etc., make it adsorb water molecules with strong performance; when the SiO ₂ material contacts the air humidity When it is large (rainy and foggy days), it can absorb a large amount of water molecules in the humid air it contacts. When the humidity of the air in contact with SiO _{2 is} small (sunny day), it can quickly release the adsorbed water molecules into the dry air it contacts. In the SiO ₂ substance, the nanopore diameter is vacated, and the water molecules waiting for the next wave of moist air are adsorbed into the inside of the substance. Regulating the release of water molecules and the ability of SiO ₂ material can occur at ambient atmospheric temperature without providing the energy or temperature of the SiO ₂ material.

Desiccant: iron-based deoxidizer, calcium oxide, aluminum oxide, magnesium oxide, cerium oxide, magnesium chloride, and activated carbon.

Network cameras, car lights, and cameras use SiO _{2 to} adjust their internal humidity. The products are based on SiO ₂ and supplemented with a different ratio of desiccant and molecular sieve (such as activated carbon) to meet the needs of different environments. The network camera, car lights, camera condensation inside the camera, so that its performance can be effectively played and reliable work.

1 gram of water has 3.34×10 ²² water molecules, the diameter of water molecules is 0.4 nm, the area of one water molecule is 0.1256 nm ² , and the SiO ₂ substance with a specific surface area of 1 m ² can adsorb 7.96×10 ¹⁸ water molecules. Therefore, the specific surface area of the SiO ₂ substance is 200-1200 m ² /g, and the number of molecules capable of adsorbing stored water per gram of SiO ₂ substance is 1.59 × 10 ^{21 -} 9.552 × 10 ²¹ . The larger the specific surface area of the SiO ₂ material, the stronger its ability to absorb and dehydrate water molecules. The material has the characteristics of small particle size, low density, high specific surface area and high porosity, and its micro-network skeleton and void generally enter the nano-category.

Based on the law of SiO ₂ materials in the air and release of adsorbed water molecules, and the SiO ₂ material is essential ingredients into various structural shapes humidity article, its application in the network camera, car headlights and other small miniature sealed housing Inside the product, the relative humidity of the air inside the small miniature sealed casing such as the network camera and the car lamp is less than 35%, then the dew point temperature of the internal air is very low, which is smaller than the external environment such as heavy rain or dense fog to the smooth transparent casing. At the cooling temperature, the phenomenon of fog condensation on the inner surface of the smooth and transparent casing does not occur. Therefore, the micro-moisture humid air inside the small miniature sealed casing products such as the network camera and the automobile lamp is solved, and the fogging condensation phenomenon occurs on the inner surface of the smooth and transparent casing, so that the optical performance of the network camera and the automobile lamp are effectively exerted. .

The structure of the humidity-conditioning product is an injection molded casing, a blister casing, a film or a non-woven fabric encapsulation structure.

The moisture-absorbing mixture 3 is filled in the injection molded case 2, and the surface of one side of the casing 2 is covered by the microporous membrane 1, and the water molecules are adsorbed by the humidity-regulating mixture 3 through the microporous membrane 1 to accumulate in the adjustment. Inside the wet mixture 3, as shown in Figure 1.

When the relative humidity of the air inside the small miniature sealed casing such as the network camera and the car lamp is less than 35%, the dew point temperature of the internal air is very low, which is smaller than the external environment such as heavy rain or dense fog to the smooth transparent shell. The cooling temperature of the body does not appear to be foggy and condensed on the inner surface of the smooth and transparent casing.

When the outside of the humidity-conditioning product is very dry and the humidity is too small, the water molecules accumulated inside the humidity-conditioning product mixture are released through the microporous membrane and diffused into a small miniature sealed casing such as a network camera or a car lamp, and the water molecules released by the mixture are re-expressed. The cavity of the polymer chain which is not tightly sealed on the small micro-sealed casing such as a network camera or a car lamp or the cavity of the casing continues to diffuse into the dry atmosphere outside the casing, and the mixture in the humidity-conditioning product is adjusted at this time. Free up a large amount of specific surface area, waiting to absorb the water molecules that have accumulated and infiltrated by the next wave of rain and fog.

The bottom of the humidity-conditioning product has a pressure-sensitive adhesive patch 4, and the moisture-adjusting product can be simply attached to a small miniature sealed casing such as a network camera or a car lamp, and the assembly is convenient. The proportioning mixture of the humidity-conditioning products depends on the humidity of the atmospheric environment of the network camera, car lights, etc., constantly absorbing moisture and releasing water molecules, and adjusting the humidity in small micro-spaces such as network cameras and car lights, so that the network camera When the interior of the car is dry, the fog condensation does not occur, and the performance is sustained and effective.

The manufacturing method comprises the following steps: firstly, injecting the ratiometric humidity-controlling mixture 3 into the injection and plastic part casing 2, and then covering and welding the microporous film 1 and the injection molded part casing 2, and bonding the pressure-sensitive adhesive patch 4 at the bottom. Finally, dry at a low temperature of 50 degrees Celsius.

The product of the film or non-woven fabric encapsulation structure is filled with a humidity control mixture 2' in a cavity made of the microporous film 1', and is encapsulated by a plastic bottom plate 3', and water molecules are transmitted through the three-sided microporous film 1' The conditioned mixture 2' is adsorbed and accumulates inside the humidity-conditioning mixture 2' as shown in FIG.

When the relative humidity of the air inside the small miniature sealed casing such as the network camera and the automobile lamp is less than 35%, the dew point temperature of the internal air is very low, which is smaller than the cooling temperature of the external environment such as heavy rain or dense fog to the smooth transparent casing. The phenomenon of fog condensation on the inner surface of the smooth and transparent casing is basically not present.

When the outside of the membrane or non-woven fabric encapsulating structure is very dry and the humidity is very small, the water molecules accumulated in the encapsulating structure of the humidity-conditioning product mixture are released through the microporous membrane and diffused to small cameras such as network cameras and automobile lamps. In the sealed casing, the water molecules released by the mixture are further diffused to the casing through the sealed position of the small micro-sealed casing such as a network camera or a car lamp or the cavity of the polymer chain of the casing. In the externally dried atmosphere, the mixture in the encapsulated structure of the humidity-conditioning product vacates a large amount of specific surface area, waiting for adsorption to accumulate the next wave of water molecules diffusing into the rain and fog.

The bottom of the package structure humidity-control product has a pressure-sensitive adhesive patch 4', and the package-structured humidity-conditioning product can be easily assembled by simply sticking it to a small miniature sealed casing such as a network camera or a car lamp.

The ratio mixture of the encapsulated structure humidity control product depends on the humidity of the atmospheric environment such as the network camera and the automobile lamp, continuously absorbs and releases water molecules, and adjusts the humidity in the small micro space such as the network camera and the automobile lamp. When the internal environment of a network camera or a car lamp is dried, no fog condensation occurs, and the performance is sustained and effectively exerted.

The article of the encapsulating structure is prepared by first injecting the finished humidity-controlling mixture 2' into the cavity made of the microporous film 1', and then covering the cavity with the plastic film bottom plate 3' and the bottom plate is adhered. Connect the pressure sensitive adhesive patch 4' and finally dry it at a low temperature of 50 degrees Celsius.

The product with internal humidity adjustment function of the invention is based on SiO ₂ material, supplemented by different ratios of super absorbent resin, desiccant and molecular sieve (such as activated carbon), and is used for solving network cameras working in different environments. The phenomenon of condensation and condensation inside the car's headlights and cameras, even if the external environment changes greatly, the humidity-conditioning products make the air humidity inside the small-small sealed casing products stable, so that its performance can be effectively played out and reliable. jobs.

Based on SiO ₂ as the basic component, supplemented with high water-absorbent resin, desiccant and molecular sieve (such as activated carbon), the mixture is environmentally friendly, non-toxic and non-polluting, RoHS and REACH (EU regulations, chemical registration, evaluation, licensing and Restrictions, etc. meet regulatory requirements.

The product with internal humidity adjustment function is an inexpensive method to solve the above-mentioned electrical fog condensation, and is an innovative application of new materials such as SiO ₂ in electrical fogging condensation.

The product with internal humidity adjustment function is convenient to use, and is convenient for mass production of the above-mentioned electric assembly line. The structure can be manufactured in large quantities using automated production lines to meet market supply needs.

The above description is only an embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. The equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, is equally included in the scope of patent protection of the present invention.

Claims (8)

An article having an internal humidity regulating function, characterized in that the article comprises a cavity, the cavity is encapsulated with a humidity-conditioning mixture, and at least one side of the cavity is covered with a microporous membrane. The article according to claim 1, wherein the humidity-conditioning mixture is composed of a high specific surface area silica SiO ₂ substance, and the super absorbent resin, the desiccant and the molecular sieve are auxiliary materials. The ratio is one or more mixed. The article according to claim 1, wherein the microporous film is an expanded polytetrafluoroethylene film, a nonwoven fabric or a film having moisture absorbing ability. The article of claim 1 wherein the article is in the form of an injection molded casing, a blister casing, a film or a nonwoven fabric encapsulation structure. The article according to claim 4, wherein the injection molded product is filled with a humidity-conditioning mixture, and the surface of the casing is covered by a microporous membrane, and the water molecules are covered. The microporous membrane is adsorbed by the humidity-conditioning mixture and accumulated in the humidity-conditioning mixture. The article according to claim 4, wherein the film or the nonwoven fabric-encapsulated structure is filled with a humidity-controlling mixture in a cavity made of a microporous film, and is made of a plastic substrate. In the package, water molecules are adsorbed by the humidity-conditioning mixture through the three-sided microporous membrane and accumulate inside the humidity-conditioning mixture. The article of claim 5, wherein the injection molded article is manufactured by first injecting a finished humidity-controlling mixture into the injection molded part casing, and then using the micro-hole. The film and the injection molded case are covered and welded, and finally dried at a low temperature. The article according to claim 6, wherein the film or the nonwoven fabric-encapsulated structure is manufactured by first injecting a finished ratio into a cavity made of a microporous film. The humidity-conditioning mixture is then covered with a plastic film substrate and a cavity, and finally dried at a low temperature.

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