Preparation method of photo-thermal heat preservation type leather finishing agent

A leather finishing agent, photothermal technology, applied in leather surface treatment, small raw hide/big raw hide/leather/fur treatment, small raw hide/large raw hide/leather skin/fur chemical treatment, etc., can solve the problem of limited heat preservation performance improvement, Problems such as poor heat insulation effect of the coating and limited reduction in thermal conductivity can achieve the effect of filling the application gap, reducing the total heat dissipation, and increasing the surface temperature

Active Publication Date: 2020-08-14
杭州棕榈地科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, on the one hand, the porosity of the photothermal heat preservation leather finishing agent is still low after adding hollow nanomaterials, and the reduction degree of its thermal conductivity is limited, so it is difficult to greatly improve the heat insulation performance of the leather finishing agent Settlement, affecting the mechanical properties of the coating, etc.
On the other hand, the thickness of leather finishing agent on the leather surface is only about 20 μm, too low coating thickness leads to poor heat insulation effect of the coating
Therefore, adding hollow nanomaterials to leather finishing agents cannot effectively improve the thermal insulation of leather
[0004] Chinese patent 201510182504.4 discloses a method for preparing thermal insulation composite film by blending nano-hollow titanium dioxide and polyacrylate emulsion. In this method, the template method is used to prepare nano-hollow titanium dioxide, and then nano-hollow titanium dioxide and polyacrylate emulsion are co-prepared. Mixed and formed into a film, the thermal insulation performance of the prepared composite film has been improved to a certain extent, but its thermal insulation performance is limited.
Chinese patent 201710210661.0A discloses a method for preparing thermal insulation film by blending nano-hollow titanium dioxide nanoparticles and polyacrylate emulsion. Introducing it into polyacrylate emulsion, the prepared composite film has certain thermal insulation performance, but the improvement of its thermal insulation performance is limited.
[0005] The existing method of adding hollow nanomaterials to improve the heat insulation performance of photothermal heat preservation leather finishing agents can only slightly reduce the thermal conductivity of leather finishing agents, thereby reducing the heat dissipation rate of the human body, but it cannot reduce the total heat dissipation of the human body, and The thickness of the leather finishing agent sprayed on the leather surface is only about 20 μm, and its heat insulation effect is very weak

Method used

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  • Preparation method of photo-thermal heat preservation type leather finishing agent
  • Preparation method of photo-thermal heat preservation type leather finishing agent
  • Preparation method of photo-thermal heat preservation type leather finishing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Under the action of 300W water bath ultrasonic waves, 0.15g two-dimensional Ti 3 C 2 Nanosheets and 0.5g of polyacrylate thickener PTF are added to 100g of anionic polyacrylate emulsion Yanbang 141 with a solid content of 37wt% (that is, the solid mass in anionic polyacrylate emulsion Yanbang 141 is 37g), Stir for 10 min at a stirring speed of 300 rpm to obtain a gray-green photothermal heat preservation leather finishing agent. Among them, Ti 3 C 2 The dosage is 0.4% of the solid mass in the anionic polyacrylate emulsion Yanbang 141.

[0037] (2) Spray the photothermal heat preservation type leather finishing agent on the leather, and the sizing amount is 30g / m 2 , and put the finished leather sample in a 110-degree oven to dry for 3 minutes, then take it out, and put the finished leather sample under direct sunlight outdoors at an outdoor temperature of 10°C.

[0038] Such as figure 1 As shown, only 30 minutes of light in the winter sun, the surface temperat...

Embodiment 2

[0041] (1) Under the action of ultrasonic waves in a water bath of 200W, the polyurethane thickener RHEOVIS PU1191 of 0.3g polydopamine nanoparticles and 0.1g is added to 100g of solid content in the anionic polyurethane emulsion Leasys 3102 of 35wt%, then at a stirring speed of Stir at 200 rpm for 20 minutes to obtain a gray photothermal heat preservation type leather finishing agent emulsion. Wherein, the dosage of polydopamine nanoparticles is 0.86% of the solid mass in the anionic polyurethane emulsion Leasys 3102.

[0042](2) Spray the photothermal heat preservation type leather finishing agent on the leather, and the sizing amount is 30g / m 2 , and put the finished leather sample in a 110-degree oven to dry for 3 minutes, then take it out, and put the finished leather sample under direct sunlight outdoors at an outdoor temperature of 10°C.

[0043] Such as figure 2 As shown, only 20 minutes of light in the winter sun, the surface temperature of the leather sample coate...

Embodiment 3

[0045] (1) Under the action of 180W water bath ultrasonic waves, 0.05g of plasma gold nanoparticles and 0.5g of cellulose thickener hydroxyethyl cellulose HEC were added to 100g of anionic polyacrylate emulsion MageAR with a solid content of 35wt%. In -103, at a stirring speed of 300 rpm, stir for 30 minutes to obtain a brown photothermal heat preservation type leather finishing agent emulsion. Wherein, the amount of plasma gold nanoparticles is 0.143% of the solid mass in the anionic polyacrylate emulsion Mage AR-103.

[0046] (2) Spray the photothermal heat preservation type leather finishing agent on the leather, and the sizing amount is 30g / m 2 , and put the finished leather sample in a 110-degree oven to dry for 3 minutes, then take it out, and put the finished leather sample under direct sunlight outdoors at an outdoor temperature of 8°C.

[0047] Such as image 3 As shown, only 30 minutes of light under the winter sun, the surface temperature of the leather sample coa...

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Abstract

The invention relates to a preparation method of a photo-thermal heat preservation type leather finishing agent, which comprises the following steps: under the action of ultrasonic stirring, uniformlymixing photo-thermal nano materials such as Ti3C2, plasma nano gold / silver particles, and nano copper sulphide, a water-based thickener and an anionic leather finishing agent emulsion to obtain the photo-thermal heat preservation type leather finishing agent. The process is simple, the addition amount of the photo-thermal nano materials is small; the photo-thermal heat preservation type leather finishing agent is applied to a leather finishing process, and an illumination self-heating leather product can be obtained, the total amount of outward heat dissipation of a human body is fundamentally reduced, the heating rate of leather is high, extra energy supply is not needed, environmental friendliness is achieved, and the application blank of an existing photo-thermal conversion material inthe field of leather heat preservation is filled up.

Description

technical field [0001] The invention belongs to the technical field of preparation of leather finishing agents, and relates to a preparation method of a photothermal heat preservation type leather finishing agent. Background technique [0002] The leather industry is one of the pillar industries of my country's light industry. However, due to the poor thermal insulation of leather, the use of leather products in cold outdoor environments is severely limited, and they are gradually replaced by light and warm down jackets. Improving the thermal insulation of leather in cold outdoor environment is an important development direction to realize the high value of leather. The use of functional leather finishing agents is an important means to realize the functionalization of leather, and the development of thermal insulation leather finishing agents can effectively solve the problem of insufficient thermal insulation of leather. [0003] At present, the main idea of ​​preparing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D7/61C09D7/43C09D175/04C09D7/65C14C11/00
CPCC09D133/04C09D7/61C09D7/70C09D7/43C09D175/04C09D7/65C14C11/003C14C11/006C08K2201/011C08K2003/0806C08K2003/0831C08K2003/3009C08L2205/025C08L2205/03C08L33/04C08K7/00C08K3/14C08L75/04C08L79/04C08L1/284C08K3/08C08K3/30C08L1/286
Inventor 张文博卫林峰马建中潘朝莹
Owner 杭州棕榈地科技开发有限公司
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