CN114032030A - Noise-reducing hand feeling agent - Google Patents
Noise-reducing hand feeling agent Download PDFInfo
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- CN114032030A CN114032030A CN202111539698.0A CN202111539698A CN114032030A CN 114032030 A CN114032030 A CN 114032030A CN 202111539698 A CN202111539698 A CN 202111539698A CN 114032030 A CN114032030 A CN 114032030A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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Abstract
The application belongs to the technical field of hand feeling agents for leather coating and particularly discloses a noise-reducing hand feeling agent which comprises the following components in parts by weight: 20-40 parts of modified amino silicone oil, 10-20 parts of isomeric tridecanol polyoxyethylene ether, 40-70 parts of deionized water and 0.2-0.3 part of glacial acetic acid; the pretreatment method of the modified amino silicone oil comprises the following steps: mixing amino silicone oil, trimethoxy methyl silane and deionized water, reacting at 80-100 ℃ for 2-6h, adding hydrochloric acid, continuing to react for 1-3h, then preserving heat for 3-5h, then cooling to 30-40 ℃, and filtering to obtain the modified amino silicone oil. The hand feeling agent prepared by the application is coated on the surface of leather, so that static and sliding friction coefficients can be greatly reduced, and squeak erasing is reduced when the leather is rubbed with each other.
Description
Technical Field
The application belongs to the technical field of hand feeling agents for leather finishing, and particularly relates to a noise reduction hand feeling agent.
Background
The hand feeling agent is a chemical for adjusting the touch feeling of products such as leather, and is generally coated on the surface of the products such as the leather, so that the surfaces of the products such as the leather have the effects of smooth feeling, soft cotton feeling, oily feeling, waxy feeling, sticky feeling and the like. The hand feeling agent has various types and can be divided into a solvent type and an emulsion type according to the product state; the main components of the hand feeling agent can be divided into an organic silicon hand feeling agent, a wax hand feeling agent, a silicon wax composite hand feeling agent and the like.
The organosilicon hand feeling agent has good hand feeling effect and a plurality of varieties, so the organosilicon hand feeling agent is most widely applied, the leather coated by the organosilicon hand feeling agent can keep air permeability, elasticity and sanitary performance, the softness of hand feeling can be improved, the drying speed of the coated leather is high, the surface of the coated leather has good stability to water and chemicals, the organosilicon hand feeling agent is not easy to deform, and the potential difference of the leather is favorably reduced.
Automobile interior parts mainly comprise plastics, leather, metal, coating etc. and interior parts slowly move or shake because of the low-load during the driving, and rub each other, therefore send the creak, and long-time creak makes the passenger feel uncomfortable, and can also shorten the life of part, usually at the outside coating feel agent of part, be used for adjusting the sense of touch of part, but the feel agent on the market at present, although the feel is smooth, all can't solve the abnormal sound of creak.
Accordingly, there remains a need for a noise reducing feel agent that reduces squeaking.
Disclosure of Invention
In order to improve the squeak problem caused by mutual friction of automobile internal parts, the first object of the present application is to provide a noise-reducing hand feeling agent.
The second purpose of the application is to provide a preparation method of the noise-reducing hand feeling agent, which has the advantages of simple preparation, convenient operation and the like.
In order to achieve the first purpose, the following technical scheme is adopted:
a noise-reducing hand feeling agent comprises the following components in parts by weight: 20-40 parts of modified amino silicone oil, 10-20 parts of isomeric tridecanol polyoxyethylene ether, 40-70 parts of deionized water and 0.2-0.3 part of glacial acetic acid;
the pretreatment method of the modified amino silicone oil comprises the following steps: mixing amino silicone oil, trimethoxy methyl silane and deionized water, reacting at 80-100 ℃ for 2-6h, adding hydrochloric acid, continuing to react for 1-3h, then preserving heat for 3-5h, then cooling to 30-40 ℃, and filtering to obtain the modified amino silicone oil.
By adopting the technical scheme, the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether are compounded and emulsified, the obtained emulsion can be well compatible and dispersible with water-based PU (polyurethane), and can be coated on the surface of leather, so that the static and sliding friction coefficients can be greatly reduced, the erasing squeaking sound is reduced when the leather is mutually rubbed, and the methyl groups connected with silicon-oxygen bonds in the compounded and emulsified product are orderly arranged on the surface of the leather coating, so that the surface energy of the leather coating is reduced, the hydrophobicity of the leather coating is improved, the surface of the leather coating is soft, smooth and water-proof, and the dry-wet performance is obviously improved.
The existence of amino can improve the orientation degree of silicone oil molecules on the surface of leather and increase the affinity of the silicone oil to the surface of the leather, the amino silicone oil is mixed with trimethoxy methyl silane, the amino silicone oil is blocked by methoxy, the end group structure of amino modified silicone oil is changed by methoxy, so that the smoothness and resilience of the surface of the leather are improved, and the reaction of the amino silicone oil and the trimethoxy methyl silane can be further accelerated by taking hydrochloric acid as a catalyst; finally, the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether are compounded and coated on the surface of the leather, so that the reactivity of the surface of the leather is enhanced, the binding capacity of the surface of the leather and the coating is improved, and the finished leather has good hand feeling.
Preferably, the weight ratio of the amino silicone oil, the trimethoxy methyl silane and the hydrochloric acid is 0.8-1.2:1: 0.02-0.05.
By adopting the technical scheme, the amino silicone oil is modified by the methoxy-terminated amino silicone oil, the obtained modified amino silicone oil has stable quality and high viscosity, can be compounded with various vinyl ethers for use, can greatly improve the cross-linking film forming capability of the modified amino silicone oil emulsion, can enable the surface of leather to have smooth and soft rebound good hand feeling when being coated on the surface of leather, and further enables the modified amino silicone oil to have good comprehensive performance when the amino silicone oil, trimethoxy methyl silane and hydrochloric acid are in a certain proportion range.
Preferably, the weight ratio of the modified amino silicone oil to the isomeric tridecanol polyoxyethylene ether is 1.5-3.5: 1.
Through adopting above-mentioned technical scheme, select for use the amino-silicone oil of special construction, compound emulsification, the coating is on the leather surface, reduces the quiet of leather surface, the coefficient of sliding friction, and it is great to reduce the amplitude, and then improves the mutual friction of leather surface and produce the squeak sound, and the ratio of modified amino-silicone oil and isomeric tridecanol polyoxyethylene ether is in certain within range, makes the effect of the handfeel agent that obtains better, not only feels smooth, has solved the problem of squeak sound moreover.
Preferably, the components also comprise polyether modified organosilicon.
By adopting the technical scheme, the polyether modified organic silicon has stable hydrolyzability, the polyether modified organic silicon is added into the hand feeling agent, and due to the existence of the hydrophilic polyether group introduced by the macromolecular structure, the polyether group can be further compounded and emulsified with the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether, so that the water solubility, the wettability and the emulsibility of the hand feeling agent can be increased, the hand feeling agent has good antistatic property, the leather can be endowed with soft, smooth and silk-like hand feeling, the leveling property of the finishing slurry can be further adjusted, the film forming property can be improved, the activity of the surface of the leather can be further improved, and the fashionable appearance style of the leather can be endowed.
Preferably, the content of the polyether modified organic silicon is 8-20 parts by weight.
By adopting the technical scheme, the content of the polyether modified organic silicon is further limited, so that the polyether modified organic silicon, the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether can be compounded better, and further the hand feeling agent and the leather have good wettability, the surface tension of the coating is reduced, and the effects of leveling, brightening and the like are improved.
Preferably, the component also comprises 3-8 parts by weight of N- (beta-aminoethyl) -gamma-aminopropylmethyldihydroxy silane.
By adopting the technical scheme, N- (beta-aminoethyl) -gamma-aminopropyl methyl dihydroxy silane is taken as a bifunctional coupling agent, added into a hand feeling agent, and then coated on the surface of a leather coating when the hand feeling agent is compatible with aqueous PU, so that the adhesive capacity of the coating to the surface of the leather is improved; in addition, after the amino functional group in the coupling agent is bonded to the modified amino silicone oil skeleton in the hand feeling agent, the orientation degree of the modified amino silicone oil on the surface of the leather is greatly improved, the affinity to the leather is further increased, and the effects of softness, smoothness, antistatic property, washing resistance, crease resistance and the like of the surface of the leather are further increased.
In order to achieve the second object, the invention provides the following technical scheme:
a preparation method of a noise-reducing hand feeling agent comprises the following steps:
s1, mixing and stirring the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether at the stirring speed of 3000-12000r/min for 50-60min, adding 5-10 parts by weight of deionized water, and stirring to obtain a mixture I;
and S2, adding glacial acetic acid into the residual deionized water, mixing to obtain a second mixture, adding the second mixture into the first mixture obtained in the step S1, adding the second mixture into the first mixture for two or three times, stirring for 15-25min each time, and stirring for 20-30min after all the second mixture is added to obtain a finished product.
By adopting the technical scheme, the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether are mixed and stirred firstly, so that the obtained mixed solution is favorably and uniformly mixed, part of deionized water is mixed with glacial acetic acid and then added into the mixture for three times, so that the emulsification reaction of the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether is favorably promoted, the reaction is complete, and a finished product with good performance is obtained.
Preferably, the stirring temperature in the step S1 is 60 to 90 ℃.
By adopting the technical scheme, the reaction among the components can be further accelerated by setting the stirring temperature, the reaction efficiency is improved, and the reaction is further completed.
Preferably, when the polyether modified silicone is added to the raw material, the polyether modified silicone is mixed with the second mixture in step S2.
By adopting the technical scheme, the polyether modified organic silicon is mixed with the mixture II in the step S2, and then the mixture is added into the mixture I for two or three times, so that the polyether modified organic silicon is more effectively compounded with the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether, the whole reaction system is fully reacted, and the comprehensive performance of the product is improved.
Preferably, when 3 to 8 parts by weight of N- (. beta. -aminoethyl) - γ -aminopropylmethyldimethoxysilane is added to the raw material, the N- (. beta. -aminoethyl) - γ -aminopropylmethyldimethoxysilane is mixed with the modified amino silicone oil and isotridecanol polyoxyethylene ether in step S1.
By adopting the technical scheme, N- (beta-aminoethyl) -gamma-aminopropylmethyl dihydroxy silane and the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether in the step S1 are mixed and compounded, so that an amino functional group in the coupling agent is bonded to a modified amino silicone oil skeleton in the hand feeling agent, the orientation degree of the modified amino silicone oil on the surface of leather is further improved, and methyl groups connected with silicon-oxygen bonds are regularly arranged on the surface of a coating, thereby reducing the friction coefficient of the surface of the material and further playing a noise reduction effect.
In summary, the present application has the following beneficial effects:
1. the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether are compounded and emulsified, the obtained emulsion can be well dispersed with water-based PU (polyurethane), and the emulsion is coated on the surface of leather, so that the static and sliding friction coefficients can be greatly reduced, the erasing and squeaking noises during mutual friction of the leather are reduced, and the methyl of a connecting silicon-oxygen bond in a product after compound emulsification is orderly arranged on the surface of the leather coating, so that the surface energy of the leather coating is reduced, the hydrophobicity of the leather coating is improved, the surface of the leather coating is soft, smooth and water-proof, and the dry-wet performance is obviously improved.
2. The amino can improve the orientation degree of silicone oil molecules on the surface of leather, the affinity of the silicone oil on the surface of the leather is increased, the amino silicone oil is mixed with trimethoxy methyl silane, and the amino silicone oil is blocked by methoxy groups, so that the end group structure of amino modified silicone oil is changed by the methoxy groups, and the smoothness and resilience of the surface of the leather are improved.
3. The polyether modified organic silicon has stable hydrolyzability, the polyether modified organic silicon is added into the hand feeling agent, and due to the fact that a hydrophilic polyether group is introduced into a macromolecular structure, the polyether group can be further compounded and emulsified with modified amino silicone oil and isomeric tridecanol polyoxyethylene ether, so that the water solubility, the wettability and the emulsibility of the hand feeling agent can be increased, the hand feeling agent can also have good antistatic property, leather can be endowed with soft, smooth and silk-like hand feeling, and the leveling property of coating slurry is further adjusted.
Detailed Description
The present application will be described in further detail with reference to examples.
In the following examples and comparative examples, the sources and types of some materials are shown in table 1.
TABLE 1 raw material source specification Table
Examples
Example 1
A noise-reducing hand feeling agent comprises, by weight, 30 parts of modified amino silicone oil, 15 parts of isomeric tridecanol polyoxyethylene ether, 55 parts of deionized water and 0.25 part of glacial acetic acid;
the pretreatment method of the modified amino silicone oil comprises the following steps: mixing 20 parts by weight of amino silicone oil, trimethoxy methyl silane and 30 parts by weight of deionized water, reacting at 90 ℃ for 4 hours, adding hydrochloric acid, continuing to react for 2 hours, then preserving heat for 4 hours, then cooling to 35 ℃, and filtering to obtain modified amino silicone oil; wherein the weight ratio of the amino silicone oil to the trimethoxy methyl silane to the hydrochloric acid is 1:1: 0.03.
The preparation method of the noise reduction hand feeling agent comprises the following steps:
s1, mixing and stirring the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether at the stirring speed of 8000r/min for 55min at the stirring temperature of 80 ℃, adding 8 parts by weight of deionized water, and stirring to obtain a mixture I;
and S2, adding glacial acetic acid into the residual deionized water, mixing to obtain a second mixture, adding the second mixture into the first mixture obtained in the step S1, adding the second mixture into the first mixture for two times and three times, stirring for 20min each time, and stirring for 25min after all the second mixture is added to obtain a finished product.
Example 2
The noise-reducing hand feeling agent is different from the noise-reducing hand feeling agent in embodiment 1 in that the noise-reducing hand feeling agent comprises 20 parts of modified amino silicone oil, 10 parts of isomeric tridecanol polyoxyethylene ether, 40 parts of deionized water and 0.2 part of glacial acetic acid.
Example 3
The noise-reducing hand feeling agent is different from the noise-reducing hand feeling agent in embodiment 1 in that the noise-reducing hand feeling agent comprises 40 parts of modified amino silicone oil, 20 parts of isomeric tridecanol polyoxyethylene ether, 70 parts of deionized water and 0.3 part of glacial acetic acid.
Example 4
A noise-reducing hand feeling agent is different from the agent in example 1 in that the weight ratio of the amino silicone oil, trimethoxy methyl silane and hydrochloric acid is 0.8:1: 0.02.
Example 5
A noise-reducing hand feeling agent is different from the agent in example 1 in that the weight ratio of the amino silicone oil, trimethoxy methyl silane and hydrochloric acid is 1.2:1: 0.05.
Example 6
A noise-reducing hand feeling agent is different from the agent in example 1 in that the weight ratio of the amino silicone oil, the trimethoxy methyl silane and the hydrochloric acid is 0.6:1: 0.08.
Example 7
A noise-reducing hand feeling agent is different from the agent in example 1 in that the weight ratio of the modified amino silicone oil to the isotridecanol polyoxyethylene ether is 1.5: 1.
Example 8
A noise-reducing hand feeling agent is different from the agent in example 1 in that the weight ratio of modified amino silicone oil to isotridecanol polyoxyethylene ether is 3.5: 1.
Example 9
The noise reduction hand feeling agent is different from the embodiment 1 in that the components also comprise 15 parts of polyether modified organic silicon; in the preparation method of the noise reduction hand feeling agent, when the polyether modified organic silicon is added into the raw materials, the polyether modified organic silicon is mixed with the mixture II in the step S2.
Example 10
The noise reduction hand feeling agent is different from the embodiment 1 in that 8 parts of polyether modified organic silicon is further included in the components; in the preparation method of the noise reduction hand feeling agent, when the polyether modified organic silicon is added into the raw materials, the polyether modified organic silicon is mixed with the mixture II in the step S2.
Example 11
The noise reduction hand feeling agent is different from the embodiment 1 in that the components also comprise 20 parts of polyether modified organic silicon; in the preparation method of the noise reduction hand feeling agent, when the polyether modified organic silicon is added into the raw materials, the polyether modified organic silicon is mixed with the mixture II in the step S2.
Example 12
The noise reduction hand feeling agent is different from the embodiment 1 in that 25 parts of polyether modified organic silicon is further included in the components; in the preparation method of the noise reduction hand feeling agent, when the polyether modified organic silicon is added into the raw materials, the polyether modified organic silicon is mixed with the mixture II in the step S2.
Example 13
A noise-reducing hand feeling agent is different from the agent in example 1 in that the agent further comprises 5 parts by weight of N- (beta-aminoethyl) -gamma-aminopropylmethyldihydroxysilane; in the preparation method of the noise reduction hand feeling agent, when 5 parts by weight of N- (beta-aminoethyl) -gamma-aminopropylmethyldimethoxysilane is added into the raw materials, the N- (beta-aminoethyl) -gamma-aminopropylmethyldimethoxysilane is mixed with the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether in the step S1.
Example 14
A noise-reducing hand feeling agent is different from that of example 1 in that the composition further comprises 3 parts by weight of N- (beta-aminoethyl) -gamma-aminopropylmethyldihydroxysilane; in the preparation method of the noise reduction hand feeling agent, when 3 parts by weight of N- (beta-aminoethyl) -gamma-aminopropylmethyldimethoxysilane is added into the raw materials, the N- (beta-aminoethyl) -gamma-aminopropylmethyldimethoxysilane is mixed with the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether in the step S1.
Example 15
A noise-reducing hand feeling agent is different from that of example 1 in that the composition further comprises 8 parts by weight of N- (beta-aminoethyl) -gamma-aminopropylmethyldihydroxysilane; in the preparation method of the noise reduction hand feeling agent, when 8 parts by weight of N- (beta-aminoethyl) -gamma-aminopropylmethyldimethoxysilane is added into the raw materials, the N- (beta-aminoethyl) -gamma-aminopropylmethyldimethoxysilane is mixed with the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether in the step S1.
Example 16
A noise-reducing hand feeling agent is different from that of example 1 in that the composition further comprises 12 parts by weight of N- (beta-aminoethyl) -gamma-aminopropylmethyldihydroxysilane; in the preparation method of the noise reduction hand feeling agent, when 8 parts by weight of N- (beta-aminoethyl) -gamma-aminopropylmethyldimethoxysilane is added into the raw materials, the N- (beta-aminoethyl) -gamma-aminopropylmethyldimethoxysilane is mixed with the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether in the step S1.
Example 17
The noise reduction hand feeling agent is different from the embodiment 1 in that the preparation method of the noise reduction hand feeling agent comprises the following steps:
s1, mixing and stirring the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether at the stirring speed of 12000r/min for 50min at the stirring temperature of 60 ℃, adding 10 parts by weight of deionized water, and stirring to obtain a mixture I;
and S2, adding glacial acetic acid into the residual deionized water, mixing to obtain a second mixture, adding the second mixture into the first mixture obtained in the step S1, adding the second mixture into the first mixture for two or three times, stirring for 25min each time, and stirring for 20min after all the second mixture is added to obtain a finished product.
Example 18
The noise reduction hand feeling agent is different from the embodiment 1 in that the preparation method of the noise reduction hand feeling agent comprises the following steps:
s1, mixing and stirring the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether at the stirring speed of 3000r/min for 60min at the stirring temperature of 90 ℃, adding 5 parts by weight of deionized water, and stirring to obtain a mixture I;
and S2, adding glacial acetic acid into the residual deionized water, mixing to obtain a second mixture, adding the second mixture into the first mixture obtained in the step S1, adding the second mixture into the first mixture for two or three times, stirring for 15min each time, and stirring for 30min after all the second mixture is added to obtain a finished product.
Example 19
The noise reduction hand feeling agent is different from the embodiment 1 in that the preparation method of the noise reduction hand feeling agent comprises the following steps:
s1, mixing and stirring the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether at a stirring speed of 8000r/min for 55min at a stirring temperature of 80 ℃, adding 16 parts by weight of deionized water, and stirring to obtain a first mixture;
example 20
The noise reduction hand feeling agent is different from the embodiment 1 in that the preparation method of the noise reduction hand feeling agent comprises the following steps:
s2, adding glacial acetic acid into the residual deionized water, mixing to obtain a second mixture, adding the second mixture into the first mixture obtained in the step S1, and stirring for 85min to obtain a finished product.
Comparative example
Comparative example 1
The noise-reducing hand feeling agent is different from the noise-reducing hand feeling agent in example 1 in that the noise-reducing hand feeling agent comprises 15 parts by weight of modified amino silicone oil, 22 parts by weight of isomeric tridecanol polyoxyethylene ether, 30 parts by weight of deionized water and 0.1 part by weight of glacial acetic acid.
Comparative example 2
The noise-reducing hand feeling agent is different from the noise-reducing hand feeling agent in example 1 in that the noise-reducing hand feeling agent comprises 50 parts by weight of modified amino silicone oil, 8 parts by weight of isomeric tridecanol polyoxyethylene ether, 90 parts by weight of deionized water and 0.5 part by weight of glacial acetic acid.
Comparative example 3
A noise-reducing hand feeling agent is different from that of example 1 in that the modified amino silicone oil is replaced with the same amount of amino silicone oil.
Comparative example 4
A noise-reducing hand feeling agent is different from the agent in example 1 in that the pretreatment method of the modified amino silicone oil comprises the following steps: mixing 20 parts by weight of amino silicone oil, trimethoxy methyl silane and 30 parts by weight of deionized water, reacting at 60 ℃ for 6 hours, adding hydrochloric acid, continuing to react for 3 hours, then preserving heat for 3 hours, then cooling to 30 ℃, and filtering to obtain the modified amino silicone oil.
Comparative example 5
A noise-reducing hand feeling agent is different from the agent in example 1 in that the pretreatment method of the modified amino silicone oil comprises the following steps: mixing 20 parts by weight of amino silicone oil, trimethoxy methyl silane and 30 parts by weight of deionized water, reacting at 90 ℃ for 6 hours, then preserving heat for 4 hours, then cooling to 35 ℃, and filtering to obtain the modified amino silicone oil.
Performance test
The hand feeling agents prepared in examples 1 to 20 and comparative examples 1 to 5 were added to the aqueous PU coating, the weight ratio of the hand feeling agent to the aqueous PU coating was 1:0.05, and then both were coated on the leather surface, and the application examples 1 to 20 and the application comparative examples 1 to 5 were noted, and the ECO-6866 hand feeling agent was added to the aqueous PU coating, the weight ratio of the hand feeling agent to the aqueous PU coating was the same, and then the leather surface was coated for application property comparison, and the application comparative example 6 was noted.
The method comprises the following specific steps: the same leather is coated on the back cover, the bottom layer, the middle layer and the top layer by a uniform formula, then is dried and softened for 2-3 hours, and then is sprayed with a hand feeling layer to obtain a finished product, and the hand feeling and other properties of the leather are firstly tested.
The comprehensive hand feeling of the leather is evaluated by experienced leather-making engineers one by one sensory evaluation, the evaluation is shown in the following table 1, each index in the table is evaluated by 0-5 points, and the high-grade leather has good performance.
Table 1 hand test results of leathers of application examples 1 to 20 and application comparative examples 1 to 6
| Smooth feeling | Feeling of oil-moistening | Water-proof property | Dry rub resistant | Wet-wiping-resistant wiper | |
| Application example 1 | 4.8 | 4.7 | 4.7 | 4.7 | 4.8 |
| Application example 2 | 4.7 | 4.6 | 4.5 | 4.6 | 4.6 |
| Application example 3 | 4.6 | 4.5 | 4.6 | 4.5 | 4.5 |
| Application example 4 | 4.7 | 4.8 | 4.6 | 4.8 | 4.7 |
| Application example 5 | 4.8 | 4.6 | 4.7 | 4.7 | 4.8 |
| Application example 6 | 4.5 | 4.6 | 4.7 | 4.5 | 4.4 |
| Application example 7 | 4.7 | 4.6 | 4.7 | 4.8 | 4.7 |
| Application example 8 | 4.6 | 4.5 | 4.6 | 4.7 | 4.7 |
| Application example 9 | 4.8 | 4.8 | 4.9 | 4.9 | 4.8 |
| Application example 10 | 4.7 | 4.6 | 4.8 | 4.7 | 4.7 |
| Application example 11 | 4.8 | 4.7 | 4.9 | 4.8 | 4.8 |
| Application example 12 | 4.6 | 4.8 | 4.7 | 4.7 | 4.6 |
| Application example 13 | 4.9 | 4.8 | 4.7 | 4.8 | 4.7 |
| Application example 14 | 4.8 | 4.7 | 4.6 | 4.7 | 4.6 |
| Application example 15 | 4.8 | 4.6 | 4.7 | 4.6 | 4.7 |
| Application example 16 | 4.7 | 4.5 | 4.6 | 4.5 | 4.5 |
| Application example 17 | 4.8 | 4.8 | 4.7 | 4.8 | 4.7 |
| Application example 18 | 4.7 | 4.8 | 4.8 | 4.7 | 4.8 |
| Applications ofExample 19 | 4.6 | 4.7 | 4.7 | 4.6 | 4.7 |
| Application example 20 | 4.6 | 4.6 | 4.8 | 4.5 | 4.6 |
| Application comparative example 1 | 4.4 | 4.5 | 4.3 | 4.5 | 4.4 |
| Comparative application example 2 | 4.3 | 4.4 | 4.2 | 4.3 | 4.3 |
| Comparative application example 3 | 4.0 | 3.9 | 3.8 | 3.9 | 4.0 |
| Application comparative example 4 | 4.1 | 4.2 | 4.3 | 4.3 | 4.4 |
| Comparative application example 5 | 4.0 | 4.1 | 3.9 | 4.1 | 4.2 |
| Comparative application example 6 | 4.2 | 4.3 | 4.4 | 4.5 | 4.3 |
The leather prepared in application examples 1-20 and application comparative examples 1-6 is tested for hand feeling retention performance, specifically, hand feeling index evaluation is carried out at a certain time interval on the finished leather product, the hand feeling difference between the finished leather product and the leather product when the finished leather product is just coated is compared, and the test value in the table is the average value of the hand feeling values.
Table 2 leather hand test results of leather standing time versus leather hand for application examples 1-20 and application comparative examples 1-6
The leathers of application example 1 and application comparative examples 1 to 6 were then applied to parts in automobiles, and the various samples were tested for changes in the coefficient of static friction and the coefficient of dynamic friction.
Table 3 coefficient of static friction and coefficient of dynamic friction of leather of application example 1 and application comparative examples 1 to 6
As can be seen from Table 1, compared with the comparative application examples 1-6, the leather prepared by the application examples 1-20 has obviously better effects in the aspects of smoothness, oil-wet feeling, water resistance, dry rub resistance and wet rub resistance, and the hand feeling agent obtained by compounding and emulsifying the modified amino silicone oil and the isotridecanol polyoxyethylene ether can endow the leather with smoothness, softness and comfortable hand feeling, the softness, oil-wet feeling and smoothness of the leather can be further improved by using the polyether modified organosilicon or the N- (beta-aminoethyl) -gamma-aminopropyl methyl dihydroxy silane, and the hand feeling index evaluation is carried out on the finished leather at certain intervals from Table 2, so that the leather prepared by the application examples 1-20 still keeps the smoothness, water resistance, oil-wet feeling and durability of the hand feeling after certain intervals.
In comparative example 1 and comparative example 2, the component content of the noise reduction hand feeling agent is changed, and the noise reduction hand feeling agent is applied to the surface of leather respectively, and the application comparative example 1 and the application comparative example 2 are prepared, and as can be seen from table 1, the prepared product is obviously reduced in the aspects of smoothness, oil feeling, water resistance, dry rub resistance and wet rub resistance compared with the application example 1, which shows that the change of the component content of the noise reduction hand feeling agent affects various performances of the hand feeling agent, and as can be seen from table 2, the smoothness, the water resistance, the oil feeling and the durability of the hand feeling of the leather are obviously reduced after a certain time interval.
Comparative example 3 the modified amino silicone oil was replaced with an equivalent amount of amino silicone oil to prepare application comparative example 3, which is significantly lower than the modified amino silicone oil of application example 1 in the aspects of smoothness, greasiness, water resistance, dry rub resistance and wet rub resistance as shown in table 1, indicating that the modified amino silicone oil significantly changes the performance of the hand feeling agent, further improves the softness, greasiness and smoothness of the leather, and that the smoothness, water resistance, greasiness and durability of the hand feeling of the leather are significantly reduced after a certain time interval as shown in table 2.
The deionized water in comparative example 4 was added at one time, corresponding to application of comparative example 4, and the deionized water in 1 was added in three times; in comparative example 5, hydrochloric acid was not added, and it can be seen from table 1 that the products prepared from the two materials are significantly reduced in smoothness, oil smoothness, water resistance, dry rub resistance and wet rub resistance compared to application example 1, indicating that the change in the preparation method of the modified amino silicone oil affects the performance of the hand feeling agent, and that the omission of hydrochloric acid as a catalyst in the preparation method of the modified amino silicone oil also affects the performance of the hand feeling agent, and it can be seen from table 2 that the smoothness, water resistance, oil smoothness and durability of hand feeling of the leather are significantly reduced after a certain time interval.
As seen from Table 3, after the hand feeling agent is coated in application example 1, the difference between the static friction coefficient and the sliding friction coefficient of the product is reduced, and the reduction amplitude is large, which shows that the amino modified silicone oil reduces the surface tension of the product, and the methyl groups connected with silicon-oxygen bonds are arranged on the surface of the coating in order, so that the hydrophobicity of the surface of the leather is improved, the surface of the leather is soft, smooth, impermeable, and has improved dry and wet performance, and further, the surface friction coefficient of the material is reduced, and the wear-resistant and noise-elimination effects are exerted.
Correspondingly, the raw material content of the hand feeling agent was changed by applying comparative examples 1-2, and as can be seen from table 3, the difference between the static friction coefficient and the sliding friction coefficient of the same product was reduced, and the squeak sound caused by the movement of the product was reduced; the application of the comparative example 3 to replace modified amino silicone oil shows that although the difference between the static friction coefficient and the sliding friction coefficient of the product is reduced, the amplitude reduction is still smaller than that of the application example 1, which shows that the amino modified silicone oil obviously improves various performances of the hand feeling agent, and is further beneficial to solving the problem of squeaking sound of the product, the application of the comparative examples 4-5 changes the preparation method of the amino modified silicone oil, and the difference between the static friction coefficient and the sliding friction coefficient of the same product is reduced, but the amplitude reduction is still smaller than that of the application example 1, which shows that the change of each parameter in the preparation method of the amino modified silicone oil affects the performance of the hand feeling agent, and further affects various performances of the subsequent hand feeling agent applied to the surface of leather.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (10)
1. The noise-reducing hand feeling agent is characterized by comprising the following components in parts by weight: 20-40 parts of modified amino silicone oil, 10-20 parts of isomeric tridecanol polyoxyethylene ether, 40-70 parts of deionized water and 0.2-0.3 part of glacial acetic acid;
the pretreatment method of the modified amino silicone oil comprises the following steps: mixing amino silicone oil, trimethoxy methyl silane and deionized water, reacting at 80-100 ℃ for 2-6h, adding hydrochloric acid, continuing to react for 1-3h, then preserving heat for 3-5h, then cooling to 30-40 ℃, and filtering to obtain the modified amino silicone oil.
2. A noise reducing handle according to claim 1 wherein: the weight ratio of the amino silicone oil to the trimethoxy methyl silane to the hydrochloric acid is 0.8-1.2:1: 0.02-0.05.
3. A noise reducing handle according to claim 1 wherein: the weight ratio of the modified amino silicone oil to the isomeric tridecanol polyoxyethylene ether is 1.5-3.5: 1.
4. A noise reducing handle according to claim 1 wherein: the components also comprise polyether modified organic silicon.
5. A noise reducing handle according to claim 4 wherein: the content of the polyether modified organic silicon is 8-20 parts by weight.
6. A noise reducing handle according to claim 1 wherein: the component also comprises 3-8 parts by weight of N- (beta-aminoethyl) -gamma-aminopropyl methyl dihydroxy silane.
7. A method of making a noise reducing hand according to any of claims 1 to 3, comprising the steps of:
s1, mixing and stirring the modified amino silicone oil and the isomeric tridecanol polyoxyethylene ether at the stirring speed of 3000-12000r/min for 50-60min, adding 5-10 parts by weight of deionized water, and stirring to obtain a mixture I;
and S2, adding glacial acetic acid into the residual deionized water, mixing to obtain a second mixture, adding the second mixture into the first mixture obtained in the step S1, adding the second mixture into the first mixture for two or three times, stirring for 15-25min each time, and stirring for 20-30min after all the second mixture is added to obtain a finished product.
8. The method for preparing a noise reducing hand feeling agent according to claim 7, wherein: the stirring temperature in the step S1 is 60 to 90 ℃.
9. The method for preparing a noise reducing hand feeling agent according to claim 7, wherein: the method comprises the following steps: when the polyether modified silicone is added to the raw material, the polyether modified silicone is mixed with the second mixture in step S2.
10. The method for preparing a noise reducing hand feeling agent according to claim 7, wherein: the method comprises the following steps: when 3 to 8 parts by weight of N- (beta-aminoethyl) -gamma-aminopropylmethyldihydroxysilane is added to the raw material, the N- (beta-aminoethyl) -gamma-aminopropylmethyldihydroxysilane is mixed with the modified amino silicone oil and isotridecanol polyoxyethylene ether in step S1.
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