Bio-based printing adhesive as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of bio-based materials, and particularly discloses a bio-based printing adhesive as well as a preparation method and application thereof. The bio-based printing adhesive is prepared from the following components in parts by weight: 57 to 73 parts of water-soluble polymer emulsion, 25 to 40 parts of plant powder, 0.1 to 2 parts of dispersing agent, 0.1 to 2 parts of organic silicon defoaming agent and 0.1 to 3 parts of thickening agent. The white bamboo charcoal powder or the white bamboo charcoal powder and the inorganic powder are adopted to replace vegetable oil, so that the bio-based carbon content can be increased, and the effects of improving water resistance, preventing sticking and reinforcing can be achieved; the main body resin of the bio-based printing adhesive is a water-soluble polymer and is matched with the bio-based white plant powder with good water resistance, so that the bio-based printing adhesive has higher bio-based carbon content and also shows excellent physical properties and applicability, a fabric treated by the bio-based printing adhesive has higher washing fastness and soft hand feeling, and the fabric has a good application prospect. The use requirements of most fabrics can be met.

Description

Technical Field

[0001] The invention belongs to the technical field of bio-based materials, and in particular relates to a bio-based printing adhesive and a preparation method and application thereof. Background Art

[0002] Bio-based materials refer to a new type of materials made from renewable biomass or raw materials obtained through biological manufacturing through biological, chemical, physical and other means, such as bioplastics, biomass functional polymer materials, etc. Bio-based materials are different from traditional chemical materials produced from non-renewable petrochemical resources such as coal and oil. They have the characteristics of renewable raw materials, reduced carbon emissions, and energy conservation. Some categories also have good biodegradability. They are an important direction for the development of the international new materials industry.

[0003] In the field of pigment printing, common bio-based printing adhesives are mainly achieved by using bio-based resins (bio-based organic emulsions) in combination with bio-based additives to increase the bio-based carbon content in the printing paste. Among them, bio-based additives are mainly vegetable oils, including soybean oil, castor oil, palm oil, peanut oil, rapeseed oil or linseed oil. Although such additives can increase the bio-based carbon content of printing adhesives, they also have significant negative effects. For example, when vegetable oil exists in a free state in the printing adhesive, it may penetrate into the fabric, causing pollution or affecting the appearance and feel of the fabric; the presence of vegetable oil may cause the mechanical strength of the adhesive to drop significantly after film formation, affecting the durability of the printed product; vegetable oil may cause the surface of the adhesive to feel damp after film formation, affecting the feel and appearance of the fabric; vegetable oil is easily lost during the soaping process, resulting in a decrease in the bio-based carbon content, affecting the environmental performance of the product. Due to the above-mentioned defects, the amount of bio-based additives added to pigment printing adhesives is greatly limited.

[0004] Therefore, it is very necessary to develop a new bio-based printing adhesive. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the prior art and provide a bio-based printing adhesive and a preparation method and application thereof.

[0006] In order to achieve the above objectives, one of the technical solutions of the present invention is: a bio-based printing adhesive, the components of which include, by weight:

[0007]

[0008]

[0009] In a preferred embodiment of the present invention, the water-soluble polymer emulsion includes any one or more combinations of acrylate emulsion, polyurethane emulsion, acrylic modified polyurethane emulsion, and the water-soluble polymer emulsion serves as the main adhesive component and provides most of the mechanical properties, such as elasticity, friction resistance, water washability, etc.

[0010] In a preferred embodiment of the present invention, the plant powder is white bamboo charcoal powder or a mixture of white bamboo charcoal powder and inorganic powder; the plant powder is used as the main filler, mainly to increase the bio-based carbon content, replace titanium dioxide to provide white covering power, and quickly thicken the coating.

[0011] White bamboo charcoal is a type of bamboo charcoal. It is made from Japanese moso bamboo and is formed under high-temperature dry distillation at 800℃~1000℃. It is also called "Binchotan". Different from ordinary bamboo charcoal, the initially formed white bamboo charcoal is also black in color. Then, nano-coating technology is used to cover the surface of the bamboo charcoal particles with a layer of white catalyst, eventually forming a white powder. It is also a bio-based material.

[0012] In a preferred embodiment of the present invention, the dispersant is at least one of a nonionic dispersant, an anionic dispersant, and an anionic nonionic dispersant; nonionic dispersants such as sulfonic acid polyester composite surfactants (ASP), sulfonic acid polyester ether composite surfactants (ASE), etc.; anionic dispersants such as sulfonate dispersants, etc.; anionic nonionic dispersants such as sulfonic acid polyester composite surfactants (ASP), sulfonic acid polyester ether composite surfactants (ASE), etc.; dispersants are mainly used to make the plant powder more stably and finely dispersed in the organic emulsion.

[0013] In a preferred embodiment of the present invention, the defoamer is at least one of an organosilicon defoamer and a mineral oil defoamer, preferably an organosilicon defoamer; the function of the defoamer is to eliminate the influence of bubbles during the production process and the storage and application process.

[0014] In a preferred embodiment of the present invention, the thickener is at least one of a polyacrylate thickener, a polyurethane thickener, an alkali swellable thickener, and a cellulose thickener; the thickener is used to adjust the viscosity of the product according to application requirements to meet customer operation requirements.

[0015] In order to achieve the above objectives, the second technical solution of the present invention is: application of a bio-based printing adhesive in paint printing.

[0016] In order to achieve the above objectives, the third technical solution of the present invention is: a method for preparing a bio-based printing adhesive, comprising the following steps:

[0017] (1) mixing the polymer emulsion and the dispersant and stirring them uniformly;

[0018] (2) Add white bamboo charcoal powder and stir until there are no particles;

[0019] (3) Add silicone defoamer and stir to defoam until there are no obvious large particles and bubbles on the surface;

[0020] (4) adding a polyacrylate thickener and stirring to obtain a bio-based printing adhesive.

[0021] In a preferred embodiment of the present invention, the stirring rate in step (1) is 300-600 r / min, the stirring rate in step (2) is 1000-1500 r / min, the stirring rate in step (3) is 500-800 r / min, and the stirring rate in step (4) is 2000-3000 r / min.

[0022] In a preferred embodiment of the present invention, the viscosity after stirring in step (4) needs to be 100,000-150,000 mPa·s.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention uses white bamboo charcoal powder or white bamboo charcoal powder and inorganic powder to replace vegetable oil, which can not only increase the bio-based carbon content, but also improve water resistance, anti-sticking and reinforcement;

[0025] 2. The main resin of the bio-based printing adhesive of the present invention is a water-soluble polymer, which is combined with a bio-based white plant powder with good water resistance, thereby making it have a higher bio-based carbon content, and also exhibits excellent physical properties and applicability. The fabric treated with it has high water fastness to washing and a soft feel, which can meet the use requirements of most fabrics. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is described in more detail below in conjunction with specific embodiments, but the protection scope of the present invention is not limited to these embodiments.

[0027] A bio-based printing adhesive, the components of which are measured by weight:

[0028]

[0029] The water-soluble polymer emulsion includes any one or more combinations of acrylate emulsion, polyurethane emulsion, and acrylic acid-modified polyurethane emulsion.

[0030] The plant powder is white bamboo charcoal powder or a mixture of white bamboo charcoal powder and inorganic powder.

[0031] The dispersant is at least one of a nonionic dispersant, an anionic dispersant, and an anionic nonionic dispersant.

[0032] The defoaming agent is at least one of an organic silicon defoaming agent and a mineral oil defoaming agent.

[0033] The thickener is at least one of a polyacrylate thickener, a polyurethane thickener, an alkali swelling thickener, and a cellulose thickener.

[0034] Application of a bio-based printing adhesive in pigment printing.

[0035] A method for preparing a bio-based printing adhesive comprises the following steps:

[0036] (1) mixing the polymer emulsion and the dispersant and stirring them uniformly;

[0037] (2) Add white bamboo charcoal powder and stir until there are no particles;

[0038] (3) Add silicone defoamer and stir to defoam until there are no obvious large particles and bubbles on the surface;

[0039] (4) adding a polyacrylate thickener and stirring to obtain a bio-based printing adhesive.

[0040] The stirring rate in step (1) is 300-600 r / min, the stirring rate in step (2) is 1000-1500 r / min, the stirring rate in step (3) is 500-800 r / min, and the stirring rate in step (4) is 2000-3000 r / min.

[0041] The viscosity after stirring in step (4) needs to be between 100,000 and 150,000 mPa·s.

[0042] The raw materials used in the following examples are:

[0043] White bamboo charcoal powder comes from Jiangxi Zhushengfu Nanotechnology Co., Ltd., model BCL-1; average particle size is 0.4μm;

[0044] The polyoxyethylene ether dispersant was derived from BASF Dispex Ultra PX 4522;

[0045] The silicone defoamer is derived from BASF’s FoamStar SI2210;

[0046] Polyacrylate thickeners are derived from Runhong Chemical PTF printing thickeners;

[0047] Acrylic emulsion comes from Zhangzhou Decai DC-189, with a solid content of 50%;

[0048] The polyurethane emulsion is derived from Zhangzhou Decai PUD-22B, with a solid content of 50%.

[0049] Example 1

[0050] A bio-based printing adhesive, the components of which are measured by weight:

[0051]

[0052] The bio-based printing adhesive is prepared by the following method: the acrylic emulsion and the polyoxyethylene ether dispersant are mixed and stirred at a speed of 300 r / min; white bamboo charcoal powder is added and stirred at a speed of 1300 r / min until there are no particles; an organosilicon defoamer is added and stirred at a speed of 500 r / min to defoam until there are no obvious large particle bubbles on the surface; a polyacrylate thickener is added and stirred at a speed of 2500 r / min until the viscosity reaches 120,000 mPa·s.

[0053] Example 2

[0054] A bio-based printing adhesive, the components of which are measured by weight:

[0055]

[0056]

[0057] The bio-based printing adhesive is prepared by the following method: the acrylic emulsion and the polyoxyethylene ether dispersant are mixed and stirred at a speed of 300 r / min; white bamboo charcoal powder is added and stirred at a speed of 1500 r / min until there are no particles; an organosilicon defoamer is added and stirred at a speed of 800 r / min to defoam until there are no obvious large particle bubbles on the surface; a polyacrylate thickener is added and stirred at a speed of 3000 r / min until the viscosity reaches 120,000 mPa·s.

[0058] Example 3

[0059] A bio-based printing adhesive, the components of which are measured by weight:

[0060]

[0061] The bio-based printing adhesive is prepared by the following method: the acrylic emulsion and the polyoxyethylene ether dispersant are mixed and stirred at a speed of 300 r / min; white bamboo charcoal powder is added and stirred at a speed of 1000 r / min until there are no particles; an organosilicon defoamer is added and stirred at a speed of 500 r / min to defoam until there are no obvious large particle bubbles on the surface; a polyacrylate thickener is added and stirred at a speed of 2000 r / min until the viscosity reaches 120,000 mPa·s.

[0062] Example 4

[0063] The bio-based printing adhesive prepared in Examples 1-3 was printed on fabric to obtain printing.

[0064] The feel, washing fastness, elasticity, etc. of the fabrics printed with different printing materials (bio-based printing adhesives) obtained in Example 4 were tested, and the testing method was as follows:

[0065] Feel: Use the touch method to directly touch and compare the printed area;

[0066] Washing fastness: Wash at 60℃, 1200r / min, 1h57min, 10 times continuously; observe whether the pattern is complete after each washing, if complete, wash again; observe the completeness of the pattern after 10 consecutive washings, if the pattern is complete and there is no sign of falling off, it is excellent; if the pattern is complete but there is a gap with the cotton cloth, it is good; if the pattern falls off, it is poor;

[0067] Elasticity: Pull the printed fabric to the limit 5 times in a row. If the printed area is intact, it will be recorded as excellent. If wrinkles are present, it will be recorded as good. If cracks or warping occur, it will be recorded as poor.

[0068] The test results are shown in Table 1 below.

[0069] Table 1 Performance test results of fabrics printed with different printing materials obtained in Example 4

[0070] Printing material source Feel Washing fastness elasticity Example 1 Dry and soft excellent excellent Example 2 Dry and hard excellent excellent Example 3 Soft and slightly sticky excellent excellent

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bio-based printing adhesive, characterized in that: Its components include by weight: Water-soluble polymer emulsion: 57-73 parts Plant powder: 25-40 parts Dispersant: 0.1-2 parts Silicone defoamer: 0.1-2 parts Thickener: 0.1-3 parts.

2. The bio-based printing adhesive according to claim 1, characterized in that The water-soluble polymer emulsion includes any one or more combinations of acrylate emulsion, polyurethane emulsion, and acrylic acid-modified polyurethane emulsion.

3. The bio-based printing adhesive according to claim 1, characterized in that The plant powder is white bamboo charcoal powder or a mixture of white bamboo charcoal powder and inorganic powder.

4. The bio-based printing adhesive according to claim 1, characterized in that The dispersant is at least one of a nonionic dispersant, an anionic dispersant, and an anionic nonionic dispersant.

5. The bio-based printing adhesive according to claim 1, characterized in that The defoamer is at least one of an organosilicon defoamer and a mineral oil defoamer.

6. The bio-based printing adhesive according to claim 1, characterized in that The thickener is at least one of a polyacrylate thickener, a polyurethane thickener, an alkali swelling thickener, and a cellulose thickener.

7. Use of the bio-based printing adhesive as described in any one of claims 1 to 6 in pigment printing.

8. A method for preparing a bio-based printing adhesive according to any one of claims 1 to 6, characterized in that: The following steps are involved: (1) mixing the polymer emulsion and the dispersant and stirring them uniformly; (2) Add white bamboo charcoal powder and stir until there are no particles; (3) Add silicone defoamer and stir to defoam until there are no obvious large particles and bubbles on the surface; (4) adding a polyacrylate thickener and stirring to obtain a bio-based printing adhesive.

9. The method for preparing the bio-based printing adhesive according to claim 8, characterized in that: The stirring rate in step (1) is 300-600 r / min, the stirring rate in step (2) is 1000-1500 r / min, the stirring rate in step (3) is 500-800 r / min, and the stirring rate in step (4) is 2000-3000 r / min.

10. The method for preparing the bio-based printing adhesive according to claim 8, characterized in that: The viscosity after stirring in step (4) needs to reach 100,000-150,000 mPa·s.

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