1. A method for preparing a heat-insulation type special nylon liquid-solid is characterized by comprising the following steps:

s1, nylon pretreatment, namely cleaning nylon by adopting a cleaning agent, and spraying an adhesion promoter on the surface of nylon cloth;

s2, spraying atomized liquid, namely spraying the atomized liquid containing the heat-insulating material on the pretreated nylon in an atomized manner;

and S3, drying the coating into a film in a thermal drying mode.

2. The liquid-solid preparation method of the heat insulation type special nylon according to claim 1, wherein the adhesion promoter is absolute ethyl alcohol containing a silane coupling agent or an isopropanol solution containing the silane coupling agent.

3. The liquid-solid preparation method of the heat-insulating special nylon according to claim 1, wherein the spray atomized liquid comprises the following formula: 18-20 parts of acrylic emulsion, 3-4 parts of flaky ultrafine titanium dioxide, 5-6 parts of floating beads, 10-12 parts of hollow glass microspheres, 10-12 parts of flaky aerogel powder, 5.5-6 parts of film-forming assistant, 1-1.5 parts of pH regulator and 1-1.2 parts of wetting dispersant.

4. The method for preparing the heat-insulating special nylon liquid-solid according to claim 3, wherein the spraying atomized liquid is in a dynamic stirring state during use.

5. The method for preparing the heat-insulating special nylon liquid-solid according to claim 3, wherein the pH regulator is sodium bicarbonate or disodium hydrogen phosphate.

6. The liquid-solid preparation method of the heat-insulating special nylon according to claim 3, wherein the wetting dispersant is prepared by compounding a wetting agent and a dispersant in a ratio of 2-2.5: 1.

7. The method for preparing the heat-insulating special nylon liquid-solid according to claim 3, wherein the film-forming assistant is a low-odor alcohol ester film-forming assistant.

8. The method for preparing the heat-insulating special nylon liquid-solid according to claim 1, wherein the heat drying mode is an infrared heating mode.

Background

The textile is used as clothes and covering materials, an important thermal property is the heat insulation property of the textile, higher requirements are put forward in the aspects of indoor and outdoor covering in storage, heat insulation property of human bodies and the like, the limitation of the covering thickness, the physical parameter property of the textile, the application range and the like is limited, and the practical problem of the advancing front of materials science is to greatly improve the original heat insulation property of the textile originally through the textile. Through a simple low-pollution mode, if the heat insulation performance of the textile can be greatly improved, the method is significant energy-saving work.

The nylon as a new functional fiber has the advantages of being particularly outstanding, and has a larger lifting space than the traditional cotton fabric in terms of production mode, application occasions and textile comfort. Especially nylon, as an output of the chemical industry, stable chemistry and modification of related properties have been a leading development in the textile industry.

If the nylon product can be endowed with good heat insulation performance, whether the product is weather-resistant, industrial application and heat insulation application, or daily clothing application, the product can be a new leap in the textile industry on weather resistance and heat insulation performance.

The nylon textile heat insulation performance has two important aspects to be considered, the chemical and physical properties of the simple substance nylon are stable, if the heat insulation performance is to be improved, the heat insulation performance can only be considered from the material compounding angle, and if the complex material compounding is carried out, the complex material compounding is carried out through the sizing agent at the original forming stage, if the heat insulation performance of the nylon can be realized, the heat insulation function can be realized through the uncomplicated process and the batching of the later-stage nylon finished product, and the nylon textile heat insulation energy-saving popularization is of great importance.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide a liquid-solid preparation method of heat-insulation special nylon, and a nylon material prepared by the method has good heat-insulation performance and stability.

The technical scheme is as follows: the invention provides a heat-insulation type special nylon liquid-solid preparation method, which comprises the following steps:

s1, nylon pretreatment, namely cleaning nylon by adopting a cleaning agent, and spraying an adhesion promoter on the surface of nylon cloth;

s2, spraying atomized liquid, namely spraying the atomized liquid containing the heat-insulating material on the pretreated nylon in an atomized manner;

and S3, drying the coating into a film by a thermal drying mode, wherein the thermal drying mode can be an infrared heating mode.

Further, the adhesion promoter is absolute ethyl alcohol containing a silane coupling agent or isopropanol solution containing the silane coupling agent. The adhesion promoter can effectively compound the atomized liquid into a whole when the atomized liquid is sprayed on the surface of the nylon material through the pretreatment of the surface of the nylon material, and is not easy to fall off.

Further, the formula of the spraying atomized liquid comprises the following components: 18-20 parts of acrylic emulsion, 3-4 parts of flaky ultrafine titanium dioxide, 5-6 parts of floating beads, 10-12 parts of hollow glass microspheres, 10-12 parts of flaky aerogel powder, 5.5-6 parts of film-forming assistant, 1-1.5 parts of pH regulator and 1-1.2 parts of wetting dispersant. The formula contains heat insulating materials such as hollow glass beads and aerogel powder, and the heat insulating materials are compounded on the surface of nylon under the action of an auxiliary agent.

Further, the spraying atomization liquid is in a dynamic stirring state when in use. In order to uniformly spray the atomized liquid on the nylon surface, the atomized liquid is uniformly mixed.

Further, the pH regulator is sodium bicarbonate or disodium hydrogen phosphate.

Furthermore, the wetting dispersant is prepared by compounding a wetting agent and a dispersant. The dispersant is preferably a sodium salt dispersant, and the wetting dispersant is prepared by compounding a wetting agent and a dispersant in a ratio of 2-2.5: 1. Specifically, the wetting agent can be selected from a gelatin wetting agent 388, and the dispersing agent can be selected from a kaolin dispersing agent P30.

Further, the film-forming auxiliary agent is a low-odor alcohol ester film-forming auxiliary agent.

Has the advantages that: according to the invention, the spray atomized liquid with a heat insulation effect and nylon are compounded into a novel heat insulation nylon material through a liquid-solid preparation process, a compact heat insulation network is formed by utilizing the ultralow heat conductivity coefficient of aerogel, the layered insulation of heat is realized, the heat insulation performance of the nylon material is optimized, the composite material has good stability, the spray material is not easy to fall off, the heat insulation performance is improved on the basis of keeping the original performance of the nylon material, and the material can be used for industrial aspects and articles for daily use. The preparation process is easy to operate, low in raw material cost and applicable to industrial popularization.

Detailed Description

For the purpose of enhancing understanding of the present invention, the present invention will be further described in detail with reference to the following examples, which are provided for illustration only and are not to be construed as limiting the scope of the present invention.

Example 1 preparation of adhesion promoter

Dissolving a silane coupling agent KH550 in an absolute ethanol solvent, wherein the concentration is 5%.

Example 2 preparation of spray atomized liquid

The formula comprises the following components: 20 parts of acrylic emulsion, 4 parts of flaky ultrafine titanium dioxide, 5 parts of floating beads, 12 parts of hollow glass microspheres, 12 parts of flaky aerogel powder, 6 parts of film-forming assistant, 1 part of pH regulator and 1 part of wetting dispersant, and the components are mixed and stirred for 30 minutes. The wetting agent is a gelatin wetting agent 388, the dispersing agent is a Gaotai dispersing agent P30, the pH regulator is sodium bicarbonate, and the film-forming assistant is ethylene glycol. All the materials mentioned above are commercially available.

Example 3

The preparation method of the heat-insulation type special nylon liquid-solid comprises the following steps:

s1, nylon pretreatment, namely cleaning nylon by adopting a cleaning agent, and spraying an adhesion promoter on the surface of nylon cloth; the cleaning agent is a cleaning solution containing a surfactant.

S2, spraying atomized liquid, namely spraying the atomized liquid containing the heat-insulating material on the pretreated nylon in an atomized manner; the spraying atomized liquid is in a dynamic stirring state when in use. In order to uniformly spray the atomized liquid on the nylon surface, the atomized liquid is uniformly mixed. And (3) uniformly spraying the spraying atomized liquid on the nylon material by adopting an atomizing device with a stirring function.

And S3, irradiating the coating by infrared light to dry the coating into a film. The atomized liquid is accelerated to dry and solidify by using the heating radiation function of infrared light, and the film is formed on the surface of nylon in an accelerated manner.

Example 4

The difference from example 3 is that the coating was dried with hot air to accelerate drying and curing of the atomized liquid, and the coating was formed on the nylon surface.

The special nylon and the common nylon obtained by the invention are subjected to various performance tests by adopting a test method of national standard GB/T35762-2017, and the test results are as follows:

test items	Example 3	Example 4	Ordinary nylon
				The heat preservation rate%	45.8	42.1	33.7
Thermal resistance m2.K/W	0.187	0.179	0.056
				Heat transfer coefficient W/(m)2.K）	1.12	1.2	2.0

The special nylon prepared by the invention obviously improves the heat preservation and heat insulation performance of the nylon material.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.