Preparation and application of self-adhesive double-wall essence microcapsule

Abstract

The invention discloses a preparation method and an application method of a self-adhesive double-wall essence microcapsule. A composite emulsifier is adopted, essences are adopted as a capsule core, melamine resin and polyacrylate are used as wall materials, and the self-adhesive double-wall essence microcapsule is prepared by respectively carrying out encapsulation on the essences by respectively adopting an in-situ polymerization method and an interfacial polymerization method. The invention also provides the application method of the self-adhesive double-wall essence microcapsule. The self-adhesive double-wall essence microcapsule which is prepared by adopting the safe and environment-friendly preparation method has the solid content of 30-35 percent, which is 10-15 percent higher than that of other essence microcapsules on the market. Double-layer wall formation is carried out by adopting the in-situ polymerization method and the interfacial polymerization method, the essence encapsulation rate can reach 92-95 percent, and the self-adhesive double-wall essence microcapsule emulsion has favorable stability. The self-adhesive double-wall essence microcapsule has a self-adhesive property while keeping the peculiar advantages of the microcapsule; and a cotton fabric finishing process is simplified. In addition, the finished cotton fabric has a favorable fragrant effect which can reach 6 months after standing; and pleasant fragrance can be kept after the cotton fabric is washed for 10 times.

Description

technical field

[0001] The invention belongs to the technical field of textile finishing, and specifically relates to a self-adhesive fabric with melamine resin and polyacrylate as the double-layer wall material and essence as the core material respectively formed by in-situ polymerization and interface polymerization. Preparation and application method of essence microcapsules. Background technique

[0002] With the development of the economy and the improvement of living standards, people's requirements for textiles have undergone great changes. From the past practical type to the decoration, enjoyment, and health care type, textile perfuming conforms to this trend. Because scented textiles have the functions of antibacterial and insect repellent, covering peculiar smell, and making body and mind comfortable, they are generally liked by people. In ancient my country, there was the habit of sewing sachets on clothes; Europe has sprayed perfume on clothes since the Middle A...

Examples

preparation example Construction

[0022] The preparation and application of self-adhesive double-wall essence microcapsules of the present invention, firstly, adopt composite emulsifier, take essence as capsule core, melamine resin and polyacrylate as wall material, adopt in-situ polymerization method and interfacial polymerization method respectively Self-adhesive double-walled essence microcapsules with both melamine resin walls and polyacrylate walls were prepared. Then, a method in which the self-adhesive double-wall essence microcapsules are directly used for cotton fabric finishing is provided.

[0023] The preparation of self-adhesive double-wall essence microcapsules of the present invention comprises the following steps:

[0024] (1) Preparation of styrene-maleic anhydride copolymer powder

[0025] Put 4-6 parts of styrene, 4-6 parts of maleic anhydride, 20-25 parts of acetone and 0.04-0.1 parts of initiator benzoyl peroxide into a four-necked bottle by weight, and bubble nitrogen for 10-20 minutes ...

Embodiment 1

[0037] Put 4 parts of styrene, 4 parts of maleic anhydride, 20 parts of acetone and 0.04 parts of initiator benzoyl peroxide into a four-necked bottle in parts by weight. Nitrogen was bubbled for 10 minutes, and the temperature was raised under stirring until all the raw materials were dissolved. After reacting at 55° C. for 2 hours, 6 parts of ethanol was added to obtain a white floc, which was taken out, dried and ground to obtain styrene-maleic anhydride copolymer powder.

[0038] Add 1 part of styrene-maleic anhydride copolymer powder and 17 parts of deionized water into a four-necked bottle in parts by weight, heat up to 65 ° C under stirring conditions, and adjust the pH to 8.3 with a 25% NaOH solution. After hours, a polyelectrolyte styrene-maleic anhydride copolymer solution was obtained.

[0039] Put 5 parts of melamine and 10 parts of 37% formaldehyde solution into a four-necked bottle by weight. Stir and heat up to 60°C. After the melamine is completely dissolved,...

Embodiment 2

[0044] Put 6 parts of styrene, 6 parts of maleic anhydride, 25 parts of acetone and 0.1 part of initiator benzoyl peroxide into a four-necked bottle in parts by weight. Nitrogen gas was bubbled for 20 minutes, and the temperature was raised under stirring until all the raw materials were dissolved. After reacting at 75° C. for 3 hours, 8 parts by weight of ethanol were added to obtain a white floc, which was taken out, dried and ground to obtain styrene-maleic anhydride copolymer powder.

[0045] Add 3 parts of styrene-maleic anhydride copolymer powder and 17 parts of deionized water into the four-necked bottle in parts by weight, heat up to 85°C under stirring conditions, and adjust the pH to 10,5 with NaOH solution with a concentration of 25%. After hours, a polyelectrolyte styrene-maleic anhydride copolymer solution was obtained.

[0046] Put 10 parts of melamine and 20 parts of 37% formaldehyde solution into a four-necked bottle by weight. Stir and heat up to 80°C. After...

technical field

[0001] The invention belongs to the technical field of textile finishing, and specifically relates to a self-adhesive fabric with melamine resin and polyacrylate as the double-layer wall material and essence as the core material respectively formed by in-situ polymerization and interface polymerization. Preparation and application method of essence microcapsules. Background technique

[0002] With the development of the economy and the improvement of living standards, people's requirements for textiles have undergone great changes. From the past practical type to the decoration, enjoyment, and health care type, textile perfuming conforms to this trend. Because scented textiles have the functions of antibacterial and insect repellent, covering peculiar smell, and making body and mind comfortable, they are generally liked by people. In ancient my country, there was the habit of sewing sachets on clothes; Europe has sprayed perfume on clothes since the Middle A...

Examples

preparation example Construction

[0022] The preparation and application of self-adhesive double-wall essence microcapsules of the present invention, firstly, adopt composite emulsifier, take essence as capsule core, melamine resin and polyacrylate as wall material, adopt in-situ polymerization method and interfacial polymerization method respectively Self-adhesive double-walled essence microcapsules with both melamine resin walls and polyacrylate walls were prepared. Then, a method in which the self-adhesive double-wall essence microcapsules are directly used for cotton fabric finishing is provided.

[0023] The preparation of self-adhesive double-wall essence microcapsules of the present invention comprises the following steps:

[0024] (1) Preparation of styrene-maleic anhydride copolymer powder

[0025] Put 4-6 parts of styrene, 4-6 parts of maleic anhydride, 20-25 parts of acetone and 0.04-0.1 parts of initiator benzoyl peroxide into a four-necked bottle by weight, and bubble nitrogen for 10-20 minutes ...

Embodiment 1

[0037] Put 4 parts of styrene, 4 parts of maleic anhydride, 20 parts of acetone and 0.04 parts of initiator benzoyl peroxide into a four-necked bottle in parts by weight. Nitrogen was bubbled for 10 minutes, and the temperature was raised under stirring until all the raw materials were dissolved. After reacting at 55° C. for 2 hours, 6 parts of ethanol was added to obtain a white floc, which was taken out, dried and ground to obtain styrene-maleic anhydride copolymer powder.

[0038] Add 1 part of styrene-maleic anhydride copolymer powder and 17 parts of deionized water into a four-necked bottle in parts by weight, heat up to 65 ° C under stirring conditions, and adjust the pH to 8.3 with a 25% NaOH solution. After hours, a polyelectrolyte styrene-maleic anhydride copolymer solution was obtained.

[0039] Put 5 parts of melamine and 10 parts of 37% formaldehyde solution into a four-necked bottle by weight. Stir and heat up to 60°C. After the melamine is completely dissolved,...

Embodiment 2

[0044] Put 6 parts of styrene, 6 parts of maleic anhydride, 25 parts of acetone and 0.1 part of initiator benzoyl peroxide into a four-necked bottle in parts by weight. Nitrogen gas was bubbled for 20 minutes, and the temperature was raised under stirring until all the raw materials were dissolved. After reacting at 75° C. for 3 hours, 8 parts by weight of ethanol were added to obtain a white floc, which was taken out, dried and ground to obtain styrene-maleic anhydride copolymer powder.

[0045] Add 3 parts of styrene-maleic anhydride copolymer powder and 17 parts of deionized water into the four-necked bottle in parts by weight, heat up to 85°C under stirring conditions, and adjust the pH to 10,5 with NaOH solution with a concentration of 25%. After hours, a polyelectrolyte styrene-maleic anhydride copolymer solution was obtained.

[0046] Put 10 parts of melamine and 20 parts of 37% formaldehyde solution into a four-necked bottle by weight. Stir and heat up to 80°C. After...