阅读说明：本技术 一种除甲醛和异味的皮革除味剂 (Leather deodorant for removing formaldehyde and peculiar smell ) 是由 桑柳波 刘沛钦 李易英 杜杰 梅颜 于 2021-09-29 设计创作，主要内容包括：本发明涉及皮革处理技术领域,具体涉及一种除甲醛和异味的皮革除味剂；除甲醛和异味的皮革除味剂按重量百分比计,由如下组分组成：乙二胺胶原蛋白溶液：1％～30％；纳米二氧化钛粉体：0.5％～1％；水：1％～50％；植物提取物：0.1％～0.5％；亚硫酸氢钠：0.5％～30％,并对应提出制备方法,通过改进皮革除味剂的组成,并对应提出制备方法,从而有效提升皮革除味剂在使用过程中对皮革散发的甲醛的去除,以及异味的稀释,从而有效提升皮革的适用性。(The invention relates to the technical field of leather treatment, in particular to a leather deodorant for removing formaldehyde and peculiar smell; the leather deodorant for removing formaldehyde and peculiar smell comprises the following components in percentage by weight: ethylene diamine collagen solution: 1% -30%; nano titanium dioxide powder: 0.5 to 1 percent; water: 1% -50%; plant extracts: 0.1 to 0.5 percent; sodium bisulfite: 0.5 to 30 percent, and correspondingly provides a preparation method, by improving the composition of the leather deodorant and correspondingly providing the preparation method, the removal of formaldehyde emitted by the leather in the use process and the dilution of peculiar smell of the leather deodorant are effectively improved, and the applicability of the leather is effectively improved.)

1. A leather deodorant for removing formaldehyde and peculiar smell is characterized in that,

the leather deodorant for removing formaldehyde and peculiar smell comprises the following components in percentage by weight:

2. a process for preparing the leather deodorant according to claim 1 for removing formaldehyde and odor,

the method comprises the following steps:

preparing an ethylenediamine collagen solution for later use;

preparing nano titanium dioxide powder for later use;

preparing plant extract for later use;

preparing sodium bisulfite for later use;

dissolving the plant extract in water according to the weight percentage, fully dissolving, and adding the sodium bisulfite into the mixture at the temperature of 60-70 ℃ while heating and stirring;

after the sodium bisulfite is added, preserving heat for 2-4 hours, cooling to normal temperature, and sequentially adding the nano titanium dioxide powder and the ethylenediamine collagen solution;

and after the nano titanium dioxide powder and the ethylenediamine collagen solution are added, putting the mixture into an ultrasonic dispersion machine to be uniformly dispersed, thus preparing the leather deodorant for removing formaldehyde and peculiar smell.

3. The method of claim 2, wherein the leather deodorant is prepared by removing formaldehyde and odor,

the preparation of the ethylenediamine collagen solution for later use comprises the following steps:

mixing collagen serving as a raw material with ethylenediamine according to a preset mass ratio, and then fully stirring;

adding a low-temperature dehydrating agent as a catalyst twice, and after the reaction is finished;

after the reaction is finished, a rotary evaporator is used for pumping out water and unreacted ethylenediamine, and then the ethylenediamine collagen can be prepared;

and dissolving the ethylenediamine collagen into water to prepare an aqueous solution, thus preparing the ethylenediamine collagen solution for later use.

4. The method of claim 3 for producing a leather deodorant capable of removing formaldehyde and odor,

the preset mass ratio is that the mass ratio of the collagen to the ethylenediamine is as follows: 2: 1 to 1.5.

5. The method of claim 4 wherein the leather deodorant is selected from the group consisting of formaldehyde, and odor,

the preparation of the nano titanium dioxide powder for standby comprises the following steps:

titanium tetrachloride and titanium isopropoxide are used as raw materials to prepare titanium dioxide suspension;

and (3) freeze-drying the titanium dioxide suspension, and controlling the freeze-drying temperature to be-80 to-60 ℃ to prepare the nano titanium dioxide powder.

6. The method of claim 5, wherein the leather deodorant is prepared by removing formaldehyde and odor,

the method for preparing the titanium dioxide suspension by using the titanium tetrachloride and the titanium isopropoxide as the raw materials comprises the following steps:

titanium tetrachloride and titanium isopropoxide are mixed according to the mass ratio of 2: 1-1.5, putting into water and mixing;

after mixing, completely reacting at 60-80 ℃ to prepare a suspension crude liquid;

and (3) introducing the suspension crude liquid into a grinding machine to be ground to obtain the titanium dioxide suspension.

Technical Field

The invention relates to the technical field of leather treatment, in particular to a leather deodorant for removing formaldehyde and peculiar smell.

Background

With the improvement of living standard of people, the chances of contacting leather and leather products in daily life are more and more;

in the preparation process of the leather, in order to improve the tanning effect of the leather, the content of used formaldehyde and various organic solvents is increased, and along with the loss of time, the leather can gradually give off the formaldehyde and peculiar smell in the daily use process, so that the body health of a user is seriously influenced.

Disclosure of Invention

The invention aims to provide a leather deodorant for removing formaldehyde and peculiar smell, which solves the problem that leather and leather products can emit formaldehyde and peculiar smell in the prior art.

In order to achieve the aim, the invention provides a leather deodorant for removing formaldehyde and peculiar smell, which comprises the following components in percentage by weight:

the composition of the smell removing agent is improved, the collagen is modified, the ethylenediamine collagen solution is utilized to form a protein layer on the surface of the leather, so that the absorption of formaldehyde emitted by the leather is completed, the plant extract is utilized to dilute the peculiar smell emitted by the leather, and the smell of the leather is effectively removed.

The invention also provides a preparation method of the leather deodorant for removing formaldehyde and peculiar smell, which comprises the following steps:

preparing an ethylenediamine collagen solution for later use;

preparing nano titanium dioxide powder for later use;

preparing plant extract for later use;

preparing sodium bisulfite for later use;

dissolving the plant extract in water according to the weight percentage, fully dissolving, and adding the sodium bisulfite into the mixture at the temperature of 60-70 ℃ while heating and stirring;

after the sodium bisulfite is added, preserving heat for 2-4 hours, cooling to normal temperature, and sequentially adding the nano titanium dioxide powder and the ethylenediamine collagen solution;

and after the nano titanium dioxide powder and the ethylenediamine collagen solution are added, putting the mixture into an ultrasonic dispersion machine to be uniformly dispersed, thus preparing the leather deodorant for removing formaldehyde and peculiar smell.

Correspondingly providing the preparation steps of the deodorant, and improving the preparation method, thereby improving the quality effect of the deodorant and fully dispersing the effective components.

Wherein the preparation of the ethylenediamine collagen solution for later use comprises the following steps:

mixing collagen serving as a raw material with ethylenediamine according to a preset mass ratio, and then fully stirring;

adding a low-temperature dehydrating agent as a catalyst twice, and after the reaction is finished;

after the reaction is finished, a rotary evaporator is used for pumping out water and unreacted ethylenediamine, and then the ethylenediamine collagen can be prepared;

and dissolving the ethylenediamine collagen into water to prepare an aqueous solution, thus preparing the ethylenediamine collagen solution for later use.

The method for modifying the collagen is improved, the ethylene diamine collagen solution is used for realizing the stratification on the surface of the leather, and the absorption capacity of the protein to the leather is utilized, so that the absorption capacity of the formaldehyde emitted by the leather is improved by modifying the protein.

Wherein the preset mass ratio is the mass ratio of collagen to ethylenediamine: 2: 1 to 1.5.

Wherein, the preparation of the nano titanium dioxide powder for standby comprises the following steps:

titanium tetrachloride and titanium isopropoxide are used as raw materials to prepare titanium dioxide suspension;

and (3) freeze-drying the titanium dioxide suspension, and controlling the freeze-drying temperature to be-80 to-60 ℃ to prepare the nano titanium dioxide powder.

The preparation method of the titanium dioxide powder is correspondingly improved, so that the titanium dioxide powder can be prepared as required, and the absorption of formaldehyde is realized by matching with the ethylenediamine collagen solution.

The method for preparing the titanium dioxide suspension by using the titanium tetrachloride and the titanium isopropoxide as the raw materials comprises the following steps:

titanium tetrachloride and titanium isopropoxide are mixed according to the mass ratio of 2: 1-1.5, putting into water and mixing;

after mixing, completely reacting at 60-80 ℃ to prepare a suspension crude liquid;

and (3) introducing the suspension crude liquid into a grinding machine to be ground to obtain the titanium dioxide suspension.

The leather deodorant for removing formaldehyde and peculiar smell provided by the invention has the advantages that the composition of the leather deodorant is improved, and the preparation method is correspondingly provided, so that the removal of formaldehyde emitted by the leather in the use process of the leather deodorant and the dilution of peculiar smell are effectively improved, and the applicability of the leather is effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic step diagram of a method for preparing a leather deodorant for removing formaldehyde and odor according to the present invention.

FIG. 2 is a schematic diagram of the steps for preparing the solution of ethylenediamine collagen for standby in the method for preparing the leather deodorant for removing formaldehyde and odor provided by the invention.

FIG. 3 is a schematic diagram of the steps of preparing nano titanium dioxide powder for standby use in the method for preparing the leather deodorant for removing formaldehyde and peculiar smell.

FIG. 4 is a schematic diagram of the steps of preparing titanium dioxide suspension from titanium tetrachloride and titanium isopropoxide as raw materials in the method for preparing the leather deodorant for removing formaldehyde and peculiar smell.

FIG. 5 is a graph showing the relationship between formaldehyde concentration and time for different collagen solution mass concentrations.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 to 5, the present invention provides a formaldehyde and odor removing leather deodorant, which comprises the following components by weight:

the invention also provides a preparation method of the leather deodorant for removing formaldehyde and peculiar smell, which comprises the following steps:

s101: preparing an ethylenediamine collagen solution for later use;

s102: preparing nano titanium dioxide powder for later use;

s103: preparing plant extract for later use;

s104: preparing sodium bisulfite for later use;

s105: dissolving the plant extract in water according to the weight percentage, fully dissolving, and adding the sodium bisulfite into the mixture at the temperature of 60-70 ℃ while heating and stirring;

s106: after the sodium bisulfite is added, preserving heat for 2-4 hours, cooling to normal temperature, and sequentially adding the nano titanium dioxide powder and the ethylenediamine collagen solution;

s107: and after the nano titanium dioxide powder and the ethylenediamine collagen solution are added, putting the mixture into an ultrasonic dispersion machine to be uniformly dispersed, thus preparing the leather deodorant for removing formaldehyde and peculiar smell.

Further, the preparation of the ethylene diamine collagen solution for standby comprises the following steps:

s201: mixing collagen serving as a raw material with ethylenediamine according to a preset mass ratio, and then fully stirring;

s202: adding a low-temperature dehydrating agent as a catalyst twice, and after the reaction is finished;

s203: after the reaction is finished, a rotary evaporator is used for pumping out water and unreacted ethylenediamine, and then the ethylenediamine collagen can be prepared;

s204: and dissolving the ethylenediamine collagen into water to prepare an aqueous solution, thus preparing the ethylenediamine collagen solution for later use.

Further, the preset mass ratio is that the mass ratio of the collagen to the ethylenediamine is as follows: 2: 1 to 1.5.

Further, the preparation of the nano titanium dioxide powder for standby comprises the following steps:

s301: titanium tetrachloride and titanium isopropoxide are used as raw materials to prepare titanium dioxide suspension;

s302: and (3) freeze-drying the titanium dioxide suspension, and controlling the freeze-drying temperature to be-80 to-60 ℃ to prepare the nano titanium dioxide powder.

Further, the preparation of the titanium dioxide suspension by using titanium tetrachloride and titanium isopropoxide as raw materials comprises the following steps:

s401: titanium tetrachloride and titanium isopropoxide are mixed according to the mass ratio of 2: 1-1.5, putting into water and mixing;

s402: after mixing, completely reacting at 60-80 ℃ to prepare a suspension crude liquid;

s403: and (3) introducing the suspension crude liquid into a grinding machine to be ground to obtain the titanium dioxide suspension.

Further, the mass concentration of the ethylenediamine collagen solution is 20-60%;

further, the plant extract is prepared by mixing plant extract of eucalyptus leaves, lemon and green tea, and is prepared from the following components in percentage by weight:

eucalyptus leaf: 5% -20%;

lemon: 10% -20%;

green tea: 20 to 35 percent.

Folium artemisiae argyi: 20 to 35 percent.

Furthermore, the particle size of the nano titanium dioxide powder is less than 100 nm.

Specific example 1:

weighing 20g of collagen, mixing with 10g of ethylenediamine, and fully stirring; adding 3g of dehydrating agent twice, after the reaction is finished, pumping out water and unreacted ethylenediamine by using a rotary evaporator to prepare ethylenediamine collagen, and dissolving the ethylenediamine collagen in water to prepare an ethylenediamine collagen solution with the mass content of 20% for later use;

then 20g of titanium tetrachloride and 10g of titanium isopropoxide are used as raw materials, and after the raw materials are mixed, the raw materials react completely at 60 ℃ to prepare a suspension crude solution; introducing the suspension crude liquid into a grinding machine to be ground to obtain titanium dioxide suspension; freeze-drying the titanium dioxide suspension, and controlling the freeze-drying temperature to be-80 ℃ to prepare the nano titanium dioxide powder;

preparing the plant extract by using 20% of the eucalyptus leaves, 10% of the lemons, 35% of the green tea and 35% of the folium artemisiae argyi for later use;

preparing sodium bisulfite for later use;

dissolving the plant extract in water according to weight percentage, fully dissolving, and adding the sodium bisulfite while heating at 60 ℃;

after the sodium bisulfite is added, preserving heat for 2 hours, cooling to normal temperature, and sequentially adding the nano titanium dioxide powder and the ethylenediamine collagen solution;

and after the nano titanium dioxide powder and the ethylenediamine collagen solution are added, putting the mixture into an ultrasonic dispersion machine to be uniformly dispersed, thus preparing the leather deodorant for removing formaldehyde and peculiar smell.

Specific example 2:

weighing 20g of collagen, mixing with 15g of ethylenediamine, and fully stirring; adding 3g of dehydrating agent twice, after the reaction is finished, pumping out water and unreacted ethylenediamine by using a rotary evaporator to prepare ethylenediamine collagen, and dissolving the ethylenediamine collagen in water to prepare an ethylenediamine collagen solution with the mass content of 40% for later use;

then 20g of titanium tetrachloride and 15g of titanium isopropoxide are used as raw materials, and after the raw materials are mixed, the raw materials react completely at 80 ℃ to prepare a suspension crude solution; introducing the suspension crude liquid into a grinding machine to be ground to obtain titanium dioxide suspension; freeze-drying the titanium dioxide suspension, and controlling the freeze-drying temperature to be-80 ℃ to prepare the nano titanium dioxide powder;

preparing the plant extract by using 20% of the eucalyptus leaves, 10% of the lemons, 35% of the green tea and 35% of the folium artemisiae argyi for later use;

preparing sodium bisulfite for later use;

dissolving the plant extract in water according to weight percentage, fully dissolving, and adding the sodium bisulfite into the mixture at 80 ℃ while heating and stirring;

after the sodium bisulfite is added, preserving heat for 4 hours, cooling to normal temperature, and sequentially adding the nano titanium dioxide powder and the ethylenediamine collagen solution;

and after the nano titanium dioxide powder and the ethylenediamine collagen solution are added, putting the mixture into an ultrasonic dispersion machine to be uniformly dispersed, thus preparing the leather deodorant for removing formaldehyde and peculiar smell.

Specific example 3:

weighing 20g of collagen, mixing with 13g of ethylenediamine, and fully stirring; adding 3g of dehydrating agent twice, after the reaction is finished, pumping out water and unreacted ethylenediamine by using a rotary evaporator to prepare ethylenediamine collagen, and dissolving the ethylenediamine collagen in water to prepare an ethylenediamine collagen solution with the mass content of 60% for later use;

then 20g of titanium tetrachloride and 13g of titanium isopropoxide are used as raw materials, and after the raw materials are mixed, the raw materials react completely at 70 ℃ to prepare a suspension crude solution; introducing the suspension crude liquid into a grinding machine to be ground to obtain titanium dioxide suspension; freeze-drying the titanium dioxide suspension, and controlling the freeze-drying temperature to be-70 ℃ to prepare the nano titanium dioxide powder;

preparing the plant extract by using 20% of the eucalyptus leaves, 20% of the lemons, 30% of the green tea and 30% of the folium artemisiae argyi for later use;

preparing sodium bisulfite for later use;

dissolving the plant extract in water according to weight percentage, fully dissolving, and adding the sodium bisulfite into the mixture at 70 ℃ while heating and stirring;

after the sodium bisulfite is added, preserving heat for 3 hours, cooling to normal temperature, and sequentially adding the nano titanium dioxide powder and the ethylenediamine collagen solution;

and after the nano titanium dioxide powder and the ethylenediamine collagen solution are added, putting the mixture into an ultrasonic dispersion machine to be uniformly dispersed, thus preparing the leather deodorant for removing formaldehyde and peculiar smell.

The experimental scheme includes that experiments are carried out according to ethylenediamine collagen solutions with different mass concentrations, the initial concentration of formaldehyde is controlled to be a certain concentration, the mass concentration of the ethylenediamine collagen solution is changed, the reaction temperature is normal temperature, the ethylenediamine collagen solution and formaldehyde react in a closed air simulation box, the concentration of the formaldehyde is read every 5min in the reaction process, the change relation between the concentration of the formaldehyde in the air simulation box and time under different collagen usage is shown in figure 5, it can be seen that the residual concentration of the formaldehyde is gradually reduced in the same reaction time along with the gradual increase of the collagen usage, namely, the higher the mass concentration of the ethylenediamine collagen solution is, and the better the formaldehyde is absorbed.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.