Photo-thermal heat preservation type composite leather finishing agent based on Pickering emulsion polymerization method and preparation method thereof

A technology of leather finishing agent and emulsion polymerization, which is applied in leather surface treatment, small raw hide/big raw hide/leather/fur treatment, small raw hide/big raw hide/leather skin/fur chemical treatment, etc., which can solve the problem of limited thermal insulation performance , high density, settlement and agglomeration, etc., to achieve the effect of reducing the total heat dissipation, solving the settlement problem, and uniform and stable system

Active Publication Date: 2020-10-09
杭州棕榈地科技开发有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent 201710210661.0A discloses a method of introducing hollow titanium dioxide nanoparticles into polyacrylate emulsions to prepare thermal insulation coatings by physical blending. The method first prepares hollow titanium dioxide nanoparticles by a template-free method, but introduces them into In the polyacrylate emulsion, the prepared composite coating has a certain thermal insulation performance, but the improvement of its thermal insulation performance is very limited.
However, since Ti 3 C 2 The density of the composite leather finishing agent obtained by the blending method is prone to sedimentation and agglomeration during actual use, which affects the light-to-heat conversion performance and other properties of the leather finishing agent.
[0005] At present, the method of adding hollow nanoparticles to the leather finishing agent by physical blending method cannot greatly improve the heat insulation performance of the leather coating
However, the photothermal conversion filler Ti was introduced into the leather finishing agent emulsion by physical blending method. 3 C 2 method cannot solve Ti 3 C 2 settlement reunion problem
Therefore, the above methods are not enough to improve the thermal performance of leather.

Method used

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  • Photo-thermal heat preservation type composite leather finishing agent based on Pickering emulsion polymerization method and preparation method thereof
  • Photo-thermal heat preservation type composite leather finishing agent based on Pickering emulsion polymerization method and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Preparation of photothermal heat preservation type composite leather finishing agent based on Pickering emulsion polymerization method:

[0037] (1) Add 100 mg of dopamine hydrochloride to 100 mL of Tris buffer at room temperature, and use its self-polymerization reaction under weakly alkaline conditions (pH=8.5) to modify 100 mg of Ti 3 C 2 After reacting for 24 hours, the nanosheets were suction filtered and rinsed with water to prepare the amphiphilic polydopamine-modified Ti 3 C 2 Nanosheets (amphiphilic Ti 3 C 2 @PDA Nanosheet);

[0038] (2) the amphiphilic Ti obtained in step (1) 3 C 2 @PDA nanosheets take 100mg as an emulsifier, and ultrasonically emulsify with 200mg of n-butanol, 10g of methyl methacrylate, 10g of butyl acrylate, and 25g of water to obtain a pre-emulsion. The ultrasonic power is 600W, and the ultrasonic time is 10 minutes;

[0039] (3) Dissolve 0.6g of ammonium persulfate in 75g of water, add 1 / 3 of the ammonium persulfate aqueous soluti...

Embodiment 2

[0044] Preparation of photothermal heat preservation type composite leather finishing agent based on Pickering emulsion polymerization method:

[0045] (1) Add 200 mg of dopamine hydrochloride to 200 mL of Tris buffer at room temperature, and use its self-polymerization reaction under weakly alkaline conditions (pH=8.5) to modify 150 mg of Ti 3 C 2 After reacting for 24 hours, the nanosheets were suction filtered and rinsed with water to prepare the amphiphilic polydopamine-modified Ti 3 C 2 Nanosheets (amphiphilic Ti 3 C 2 @PDA Nanosheet);

[0046] (2) the amphiphilic Ti obtained in step (1) 3 C 2 Take 150mg of @PDA nanosheets as an emulsifier, and ultrasonically emulsify with 500mg of n-butanol, 30g of styrene, 20g of butyl acrylate, and 62.5g of water to prepare a pre-emulsion. The ultrasonic power is 600W, and the ultrasonic time is 10 minutes ;

[0047] (3) Dissolve 1.5g of ammonium persulfate in 187.5g of water, add 1 / 3 of the ammonium persulfate aqueous solution...

Embodiment 3

[0052] Preparation of photothermal heat preservation type composite leather finishing agent based on Pickering emulsion polymerization method:

[0053] (1) Add 300 mg of dopamine hydrochloride to 300 mL of Tris buffer at room temperature, and use its self-polymerization reaction under weakly alkaline conditions (pH=8.5) to modify 100 mg of Ti 3 C 2 After reacting for 24 hours, the nanosheets were suction filtered and rinsed with water to prepare the amphiphilic polydopamine-modified Ti 3 C 2 Nanosheets (amphiphilic Ti 3 C 2 @PDA Nanosheet);

[0054] (2) the amphiphilic Ti obtained in step (1) 3 C 2 Take 100mg of @PDA nanosheets as an emulsifier, and ultrasonically emulsify with 500mg of n-butanol, 23g of styrene, 27g of butyl acrylate, and 62.5g of water to prepare a pre-emulsion. The ultrasonic power is 600W, and the ultrasonic time is 10 minutes ;

[0055] (3) Dissolve 1.5 g of ammonium persulfate in 187.5 g of water, add 1 / 3 of the ammonium persulfate aqueous soluti...

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Abstract

The invention discloses a photo-thermal heat preservation type composite leather finishing agent based on a Pickering emulsion polymerization method, a preparation method and application thereof, andbelongs to the technical field of leather finishing agent preparation. According to the preparation method, the amphipathy is regulated and controlled through polydopamine modified Ti3C2; ultrasonic emulsification is carried out on the obtained amphiphilic polydopamine modified Ti3C2 nanosheet, a co-emulsifier, a vinyl monomer and water to obtain a pre-emulsion, and polymerization of the pre-emulsion is initiated by using a Pickering emulsion polymerization method to obtain the photo-thermal heat preservation type composite leather finishing agent. The photo-thermal heat preservation type composite leather finishing agent prepared by the method contains amphiphilic polydopamine modified Ti3C2 nanosheet with a synergistic photo-thermal conversion effect, the problem of sedimentation and agglomeration when Ti3C2 is introduced by a blending method is avoided, then the obtained photo-thermal heat preservation type composite leather finishing agent is applied to a leather finishing process,and a leather product capable of rapidly and spontaneously heating under natural illumination can be obtained, so that the total heat dissipation amount of a human body is reduced by reducing the temperature difference between the human body and the leather product, and the heat retention property of the leather product is improved.

Description

technical field [0001] The invention belongs to the technical field of preparation of leather finishing agents, and relates to a photothermal heat preservation type composite leather finishing agent based on a Pickering emulsion polymerization method and a preparation method thereof. Background technique [0002] The leather industry is one of the important pillar industries of my country's light industry. However, the heat retention of leather is poor, which limits the use of garment leather, shoe upper leather, etc. in cold outdoor environments, which is not conducive to the development of the leather industry. Improving the warmth retention of clothing leather in winter outdoor environments is an important development direction for realizing high-value leather. The development of heat-retaining leather finishing agents is expected to solve the defect of insufficient warmth retention of clothing leather, and break through the shackles of clothing leather in the winter out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/12C09D133/08C09D125/14C09D7/62C08F220/14C08F220/18C08F212/08C08F2/44C14C11/00
CPCC09D133/12C09D133/08C09D125/14C09D7/62C08F220/14C08F220/1804C08F212/08C08F2/44C14C11/003C08K2201/011C08K9/08C08K3/14
Inventor 马建中卫林峰张文博
Owner 杭州棕榈地科技开发有限公司
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