CN112694803A - Anti-collision water-based liquid film capable of being automatically implemented and removed - Google Patents

Abstract

The invention relates to the technical field of liquid films, in particular to a collision-proof water-based liquid film capable of being automatically implemented and removed. The anti-collision aqueous liquid film capable of being automatically implemented and removed is prepared from the following components in parts by weight: 35-40 parts of water-based acrylic resin, 8-10 parts of neutralizing agent, 5-6 parts of film-forming additive, 7-15 parts of magnesium aluminum silicate, 0.2-0.5 part of wetting agent and 30-45 parts of water. The liquid film can be used for automatic mass production of products, has high yield, can be constructed in a non-contact way through automatic equipment, cannot cause secondary collision and scratching, can be completely attached to the products through dip coating or spraying construction, and cannot cause friction and poor collision in the product turnover process.

Description

Anti-collision water-based liquid film capable of being automatically implemented and removed

Technical Field

The invention relates to the technical field of liquid films, in particular to a collision-proof water-based liquid film capable of being automatically implemented and removed.

Background

Along with the increasingly high requirements on the appearance of the electronic industry, the industry is divided into more and more fine industry, products in each process stage are often required to be packaged and transported for multiple times, the prevention of collision and scratching in the transporting process is very important to guarantee the delivery yield, the conventional scheme is to use pearl cotton or release film for coating, manual film coating and manual peeling are required in the protecting process, full automation cannot be realized, and the productivity is low; in addition, products need to be contacted during film coating, and secondary scratching, collision and other defects are easily caused; the product pearl cotton and the release film with uneven shapes have poor fitting performance, the product cannot be fitted in hundreds of percent, sliding friction is easily generated in the transportation process, and the defects of scratching, collision and the like are caused; under high temperature conditions, residues are easily generated and are difficult to remove.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

Aiming at the existing problems, the invention aims to provide a bump-proof aqueous liquid film capable of being automatically implemented and removed, which can be used for uniformly coating a product through an automatic spraying or dip-coating process, can be completely attached to the product through self-drying or drying to form a film, has the surface hardness of more than H, can resist normal-temperature water soaking for more than 1H and high temperature of 150 ℃ for more than 2H, and can be quickly removed by soaking in 50-60 ℃ clear water for 60-100 s.

In order to achieve the purpose, the invention provides the following technical scheme:

the anti-collision aqueous liquid film capable of being automatically implemented and removed is prepared from the following components in parts by weight: 35-40 parts of water-based acrylic resin, 8-10 parts of neutralizing agent, 5-6 parts of film-forming additive, 7-15 parts of magnesium aluminum silicate, 0.2-0.5 part of wetting agent and 30-45 parts of water.

Preferably, the molecular weight of the waterborne acrylic resin is 10000-15000, the acid value is 200-250, and the Tg point is 60-70 ℃.

Preferably, the particle size of the magnesium aluminum silicate is 2000-5000 meshes.

Preferably, the neutralizing agent is an organic amine; the wetting agent is a water-based polyether type wetting agent.

In addition, the invention also provides a method for preparing the anti-collision aqueous liquid film capable of being automatically implemented and removed, which comprises the following steps:

(1) weighing the components according to the weight part ratio;

(2) placing the water-based acrylic resin, a neutralizer, a film-forming assistant, a wetting agent and water into a clean container, and dispersing for 30-50min at a high speed by a dispersion machine at the rotating speed of 800-;

(3) adding magnesium silicate, and dispersing at high speed for 20-30min by a dispersion machine at the rotating speed of 800-.

The invention further provides application of the anti-collision water-based liquid film capable of being automatically implemented and removed in electronic product packaging.

Compared with the prior art, the invention has the following beneficial effects:

(1) the liquid film disclosed by the invention is simple in raw material, environment-friendly and simple in construction process, is coated on the surface of a product to be circulated by automatic spraying or dip-coating equipment, can be formed into a film only by baking for 4-5min at normal temperature for 1h or at 80 ℃, the film layer is 100% attached to the product, is wear-resistant, tough and good in adhesive force, can resist soaking in normal-temperature water for more than 1h and can resist high temperature of 150 ℃ for 2h without influencing removal, the film can be quickly removed by soaking in clear water at 50-60 ℃ for 60-100s by an automatic cleaning machine after circulation is completed, and no residue is left after the film is removed.

(2) The liquid film can be used for automatic mass production of products, has high yield, can be constructed in a non-contact way through automatic equipment, cannot cause secondary collision and scratching, can be completely attached to the products through dip coating or spraying construction, and cannot cause friction and poor collision in the product turnover process.

Detailed Description

In the following, the technical solutions of the present invention will be described clearly and completely, and it is obvious that the described embodiments are some, not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the following examples, DMEA is dimethylethanolamine; PMA is propylene glycol methyl ether acetate.

Examples 1 to 12

A method for preparing a bump-proof aqueous liquid film capable of being automatically implemented and removed comprises the following steps:

(1) weighing the following components in parts by weight: the water-based acrylic resin, a neutralizing agent, a film-forming aid, magnesium aluminum silicate, a wetting agent and water, wherein the specific weight is shown in the following table 1;

(2) placing the water-based acrylic resin, a neutralizer, a film-forming assistant, a wetting agent and water into a clean container, and dispersing for 50min at a high speed of 800/min by using a dispersion machine until the water-based acrylic resin is completely dissolved;

TABLE 1 weight of ingredients of examples 1-12

(3) Adding magnesium silicate, and dispersing at high speed of 1200r/min for 30 min.

Test examples

The aqueous liquid films prepared in examples 1 to 12 were sprayed or dip-coated on the surfaces of different products and baked for 4 to 5min at room temperature for 1 hour or 80 ℃, the adhesion force was tested by a Baige test, the hardness standard (500g force, greater than H) was tested by a pencil hardness tester, the water-resistant soaking time was tested by room temperature water (20 ℃), the film-releasing time was tested by water at 50 to 60 ℃, and the high-temperature resistance was tested by baking for 2 hours at 150 ℃. The test results are shown in table 2 below.

TABLE 2 results of testing aqueous liquid films of inventive examples 1-12

As can be seen from the table 2, the aqueous liquid film disclosed by the invention is simple in raw material, environment-friendly and simple in construction process, is coated on the surface of a product to be circulated by automatic spraying or dip-coating equipment, can be formed into a film by baking for 4-5min at normal temperature for 1h or at 80 ℃, can be 100% attached to the product, is wear-resistant, tough and good in adhesive force, can resist 2h at 150 ℃ and high temperature for 2h without affecting removal, can be rapidly removed by soaking in 50-60 ℃ clear water for 60-100s by an automatic cleaning machine after circulation is completed, and has no residue after removal.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims (6)

1. The anti-collision aqueous liquid film capable of being automatically implemented and removed is characterized by being prepared from the following components in parts by weight: 35-40 parts of water-based acrylic resin, 8-10 parts of neutralizing agent, 5-6 parts of film-forming additive, 7-15 parts of magnesium aluminum silicate, 0.2-0.5 part of wetting agent and 30-45 parts of water.

2. The anti-bump aqueous liquid capable of being automatically applied and removed as claimed in claim 1, wherein the molecular weight of the aqueous acrylic resin is 10000-15000, the acid value is 200-250, and the Tg point is 60-70 ℃.

3. The anti-collision aqueous liquid capable of being automatically implemented and removed as claimed in claim 1, wherein the particle size of the magnesium aluminum silicate is 2000-5000 mesh.

4. The automatically implementable and filmed bump-proof aqueous liquid of claim 1 wherein the neutralizing agent is an organic amine; the wetting agent is a water-based polyether type wetting agent.

5. A method for preparing the anti-collision aqueous liquid film capable of being automatically implemented and removed according to any one of claims 1 to 4, which is characterized by comprising the following steps of:

(1) weighing the components according to the weight part ratio;

(2) placing the water-based acrylic resin, a neutralizer, a film-forming assistant, a wetting agent and water into a clean container, and dispersing for 30-50min at a high speed by a dispersion machine at the rotating speed of 800-;

(3) adding magnesium silicate, and dispersing at high speed for 20-30min by a dispersion machine at the rotating speed of 800-.

6. The use of the anti-bumping aqueous liquid film capable of being automatically implemented and removed as claimed in any one of claims 1 to 4 in the packaging of electronic products.