CN115181819A - Formaldehyde-free melamine retanning agent, preparation method and equipment - Google Patents
Formaldehyde-free melamine retanning agent, preparation method and equipment Download PDFInfo
- Publication number
- CN115181819A CN115181819A CN202210562588.4A CN202210562588A CN115181819A CN 115181819 A CN115181819 A CN 115181819A CN 202210562588 A CN202210562588 A CN 202210562588A CN 115181819 A CN115181819 A CN 115181819A
- Authority
- CN
- China
- Prior art keywords
- formaldehyde
- melamine
- parts
- free
- retanning agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920000877 Melamine resin Polymers 0.000 title claims abstract description 106
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 99
- 238000005286 illumination Methods 0.000 claims abstract description 56
- 239000000178 monomer Substances 0.000 claims abstract description 45
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 44
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 22
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 22
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 22
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 22
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims description 79
- 239000000243 solution Substances 0.000 claims description 42
- 239000004640 Melamine resin Substances 0.000 claims description 33
- 238000003756 stirring Methods 0.000 claims description 27
- 150000007974 melamines Chemical class 0.000 claims description 23
- 239000007864 aqueous solution Substances 0.000 claims description 19
- MBHRHUJRKGNOKX-UHFFFAOYSA-N [(4,6-diamino-1,3,5-triazin-2-yl)amino]methanol Chemical compound NC1=NC(N)=NC(NCO)=N1 MBHRHUJRKGNOKX-UHFFFAOYSA-N 0.000 claims description 18
- 238000009833 condensation Methods 0.000 claims description 10
- 230000005494 condensation Effects 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 8
- 230000035484 reaction time Effects 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract description 39
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 6
- 239000001569 carbon dioxide Substances 0.000 abstract description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 3
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 description 10
- 239000011347 resin Substances 0.000 description 10
- 238000007789 sealing Methods 0.000 description 9
- 239000010985 leather Substances 0.000 description 3
- 102000008186 Collagen Human genes 0.000 description 2
- 108010035532 Collagen Proteins 0.000 description 2
- 229920001436 collagen Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- CUHVTYCUTYWQOR-UHFFFAOYSA-N formaldehyde Chemical compound O=C.O=C CUHVTYCUTYWQOR-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000012258 stirred mixture Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
- C14C3/22—Chemical tanning by organic agents using polymerisation products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
- B01J19/0066—Stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
- B01J19/122—Incoherent waves
- B01J19/123—Ultraviolet light
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G14/00—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00
- C08G14/02—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes
- C08G14/04—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols
- C08G14/06—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols and monomers containing hydrogen attached to nitrogen
- C08G14/10—Melamines
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
The invention relates to the technical field of retanning agents, in particular to a formaldehyde-free melamine retanning agent, a preparation method and equipment, wherein the raw materials comprise 100-200 parts of phenol monomer, 100-250 parts of melamine, 50-100 parts of formaldehyde, 1-2 parts of sodium sulfate vulcanizing agent and 20-70 parts of nano-scale titanium dioxide, and the nano-scale titanium dioxide is added into the retanning agent, so that free formaldehyde in the retanning agent reacts with the nano-scale titanium dioxide under the illumination condition, the formaldehyde is decomposed into carbon dioxide and water, and the free formaldehyde in the retanning agent is removed, so that the phenomenon that the retanning agent is volatilized to cause damage to a human body in the using process is prevented, and the use range of the retanning agent is enlarged.
Description
Technical Field
The invention relates to the technical field of retanning agents, in particular to a formaldehyde-free melamine retanning agent, and a preparation method and equipment thereof.
Background
The retanning agent can be combined with collagen to convert the collagen into leather, so that the retanning agent can be used for retanning leather, and the use effect of common retanning agents is poor.
At present, melamine retanning agent is provided, melamine resin is obtained by condensing melamine and formaldehyde, and the retanning agent has the characteristics of light tanning color, plump finished leather, good light resistance and good filling property, so that the using effect of retanning by the retanning agent is improved.
However, the above-mentioned melamine retanning agents are liable to release formaldehyde during use, and formaldehyde is harmful to human bodies, so that the use of the melamine retanning agents is limited to a certain extent.
Disclosure of Invention
The invention aims to provide a formaldehyde-free melamine retanning agent, a preparation method and equipment, which can reduce the volatilization amount of the melamine retanning agent in use, thereby improving the application range of the melamine retanning agent.
In order to realize the purpose, the invention provides a formaldehyde-free melamine retanning agent which comprises the following raw materials in parts by weight: 100 to 200 parts of phenol monomer, 100 to 250 parts of melamine, 50 to 100 parts of formaldehyde, 1 to 2 parts of sodium sulfate vulcanizing agent and 20 to 70 parts of nano-scale titanium dioxide.
The invention also provides a preparation method of the formaldehyde-free melamine retanning agent, which is used for preparing the formaldehyde-free melamine retanning agent and specifically comprises the following steps:
weighing the raw materials in parts by weight respectively;
mixing and reacting a phenol monomer and a sodium sulfate vulcanizing agent under an alkaline condition to obtain a modified monomer, wherein the reaction time is 2-7 h, and the reaction temperature is 50-120 ℃;
reacting formaldehyde, melamine and 300 parts by mass of pure water to prepare a methylol melamine aqueous solution;
carrying out end-capping condensation on a modified monomer and a methylol melamine aqueous solution to obtain a modified melamine resin solution;
adding nano-scale titanium dioxide into the modified melamine resin solution, and irradiating for 24-48 h under the condition of ultraviolet light to obtain a formaldehyde-free melamine resin solution;
and (3) performing powder spraying and drying on the formaldehyde-free melamine resin solution to obtain the formaldehyde-free melamine retanning agent.
Wherein, in the step of carrying out end-capping condensation on the modified monomer and the aqueous solution of the methylol melamine to obtain the modified melamine resin solution: the reaction time is 2-8 h, and the reaction temperature is 50-120 ℃.
The invention also provides a preparation device of the formaldehyde-free melamine retanning agent, which is suitable for the preparation method of the formaldehyde-free melamine retanning agent, and comprises a machine body, a mixing box, an illumination box and an ultraviolet light source, wherein the machine body is provided with the mixing cavity and the illumination cavity at intervals, the ultraviolet light source is arranged on the top side of the illumination cavity, the mixing box is detachably connected with the machine body, the mixing box is positioned in the mixing cavity, the illumination box is detachably connected with the machine body, and the illumination box is positioned in the illumination cavity.
The mixing chamber with the side in illumination chamber all is provided with fixed subassembly, the mixing chamber with the side of illumination chamber all is provided with fixed mouthful, fixed subassembly includes pressure spring and mount, the both ends of pressure spring respectively with the organism with mount fixed connection, the mount with organism sliding connection, the one end of mount is located the inside of fixed mouthful.
The formaldehyde-free melamine retanning agent preparation equipment further comprises a stirring structure, wherein the stirring structure is arranged inside the mixing cavity, the stirring structure comprises a telescopic cylinder, a mounting plate, a driving motor and a stirring rod, the telescopic cylinder is fixedly arranged on the top side of the mixing cavity, the mounting plate is fixedly connected with the output end of the telescopic cylinder, the driving motor is fixedly mounted at the bottom of the mounting plate, and the stirring rod is fixedly connected with the output end of the driving motor.
Wherein, stirring structure still includes the guard box, the guard box with mounting panel fixed connection, the guard box is located driving motor's outside.
According to the formaldehyde-free melamine retanning agent, the preparation method and the equipment, the nano-scale titanium dioxide is added into the retanning agent, free formaldehyde in the retanning agent reacts with the nano-scale titanium dioxide under the illumination condition, the formaldehyde is decomposed into carbon dioxide and water, so that the free formaldehyde in the retanning agent is removed, the phenomenon that the formaldehyde volatilizes in the use process of the retanning agent to cause damage to a human body is prevented, and the use range of the retanning agent is enlarged.
Drawings
In order to more clearly illustrate the embodiments of the present application 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.
FIG. 1 is a flow chart of a method of preparing a formaldehyde-free melamine retanning agent in accordance with the present invention.
Fig. 2 is a schematic structural diagram of a preparation apparatus of a formaldehyde-free melamine retanning agent according to the present invention.
Fig. 3 is a sectional view showing the construction of an apparatus for preparing a formaldehyde-free melamine retanning agent according to the present invention.
Fig. 4 isbase:Sub>A sectional view atbase:Sub>A-base:Sub>A of fig. 3 of an apparatus for preparingbase:Sub>A formaldehyde-free melamine retanning agent in accordance with the present invention.
Fig. 5 is a longitudinal sectional view of a body of an apparatus for preparing a formaldehyde-free melamine retanning agent according to the present invention, the body being located at a light box.
Fig. 6 is a partially enlarged view of B in fig. 4 of a manufacturing apparatus of a formaldehyde-free melamine-based retanning agent according to the present invention.
101-machine body, 102-mixing box, 103-illumination box, 104-ultraviolet light source, 105-mixing cavity, 106-illumination cavity, 107-positioning bracket, 108-positioning port, 109-fixing port, 110-pressure spring, 111-fixing frame, 112-telescopic cylinder, 113-mounting plate, 114-driving motor, 115-stirring rod, 116-protective box, 117-sealing plate, 118-connecting spring and 119-accommodating groove.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, and the embodiments described below with reference to the accompanying drawings are exemplary and intended to be illustrative of the present invention and should not be construed as limiting the present invention.
The invention provides a formaldehyde-free melamine retanning agent which comprises the following raw materials in parts by weight: 100 to 200 parts of phenol monomer, 100 to 250 parts of melamine, 50 to 100 parts of formaldehyde, 1 to 2 parts of sodium sulfate vulcanizing agent and 20 to 70 parts of nano-scale titanium dioxide.
The nano-scale titanium dioxide is added into the retanning agent, so that free formaldehyde in the retanning agent reacts with the nano-scale titanium dioxide under the illumination condition, and the formaldehyde is decomposed into carbon dioxide and water to remove the free formaldehyde in the retanning agent, so that the phenomenon that the formaldehyde volatilizes to cause damage to a human body in the use process of the retanning agent is prevented, and the use range of the retanning agent is enlarged.
Referring to fig. 1, fig. 1 is a flow chart of a method for preparing a formaldehyde-free melamine retanning agent according to the present invention. The invention also provides a preparation method of the formaldehyde-free melamine retanning agent, which is used for preparing the formaldehyde-free melamine retanning agent and specifically comprises the following steps:
s1: weighing the raw materials in parts by weight respectively;
s2: mixing and reacting a phenol monomer and a sodium sulfate vulcanizing agent under an alkaline condition to obtain a modified monomer, wherein the reaction time is 2-7 h, and the reaction temperature is 50-120 ℃;
s3: reacting formaldehyde, melamine and 300 parts by mass of pure water to prepare a methylol melamine aqueous solution, wherein the reaction time is 2-8 hours, and the reaction temperature is 50-120 ℃;
s4: carrying out end-capping condensation on a modified monomer and a methylol melamine aqueous solution to obtain a modified melamine resin solution;
s5: adding nano-scale titanium dioxide into the modified melamine resin solution, and irradiating for 24-48 h under the condition of ultraviolet light to obtain a formaldehyde-free melamine resin solution;
s6: and (3) performing powder spraying and drying on the formaldehyde-free melamine resin solution to obtain the formaldehyde-free melamine retanning agent.
Referring to fig. 2 to 6, fig. 2 isbase:Sub>A schematic structural view ofbase:Sub>A device for preparing formaldehyde-free melamine retanning agent according to the present invention, fig. 3 isbase:Sub>A sectional structural view of the device for preparing formaldehyde-free melamine retanning agent according to the present invention, fig. 4 isbase:Sub>A sectional view taken atbase:Sub>A-base:Sub>A of fig. 3 of the device for preparing formaldehyde-free melamine retanning agent according to the present invention, and fig. 5 isbase:Sub>A longitudinal sectional view taken atbase:Sub>A light box ofbase:Sub>A body of the device for preparing formaldehyde-free melamine retanning agent according to the present invention. Fig. 6 is a partially enlarged view of B in fig. 4 of an apparatus for preparing a formaldehyde-free melamine-based retanning agent in accordance with the present invention. The invention also provides a preparation device of the formaldehyde-free melamine retanning agent, which is suitable for the preparation method of the formaldehyde-free melamine retanning agent, and the preparation device comprises a machine body 101, a mixing box 102, an illumination box 103 and an ultraviolet light source 104, wherein the machine body 101 is provided with the mixing cavity 105 and the illumination cavity 106 at intervals, the ultraviolet light source 104 is arranged on the top side of the illumination cavity 106, the mixing box 102 is detachably connected with the machine body 101, the mixing box 102 is positioned in the mixing cavity 105, the illumination box 103 is detachably connected with the machine body 101, and the illumination box 103 is positioned in the illumination cavity 106;
the bottom parts of the mixing box 102 and the illumination box 103 are both provided with positioning brackets 107, the bottom parts of the mixing cavity 105 and the illumination cavity 106 are provided with positioning holes 108 matched with the positioning brackets 107, and the positioning brackets 107 are positioned inside the positioning holes 108;
fixing components are arranged on the side surfaces of the mixing cavity 105 and the illumination cavity 106, fixing ports 109 are arranged on the side surfaces of the mixing box 102 and the illumination box 103, each fixing component comprises a pressure spring 110 and a fixing frame 111, two ends of each pressure spring 110 are fixedly connected with the machine body 101 and the fixing frame 111 respectively, the fixing frames 111 are connected with the machine body 101 in a sliding mode, and one end of each fixing frame 111 is located inside each fixing port 109;
the preparation equipment of the formaldehyde-free melamine retanning agent further comprises a stirring structure, the stirring structure is arranged inside the mixing cavity 105, the stirring structure comprises a telescopic cylinder 112, a mounting plate 113, a driving motor 114 and a stirring rod 115, the telescopic cylinder 112 is fixedly arranged on the top side of the mixing cavity 105, the mounting plate 113 is fixedly connected with the output end of the telescopic cylinder 112, the driving motor 114 is fixedly arranged at the bottom of the mounting plate 113, and the stirring rod 115 is fixedly connected with the output end of the driving motor 114;
the stirring structure further comprises a protective box 116, the protective box 116 is fixedly connected with the mounting plate 113, and the protective box 116 is located outside the driving motor 114;
the preparation equipment of the formaldehyde-free melamine retanning agent further comprises two sealing plates 117, the two sealing plates 117 are respectively connected with the machine body 101 in a sliding mode, and the two sealing plates 117 are respectively located at the mixing cavity 105 and the illumination cavity 106;
the preparation equipment of the formaldehyde-free melamine retanning agent further comprises a connecting spring 118, the side surfaces of the mixing cavity 105 and the side surfaces of the illumination cavity 106 are both provided with accommodating grooves 119, two ends of the connecting spring 118 are fixedly connected with the sealing plate 117 and the machine body 101 respectively, and the connecting spring 118 is located inside the accommodating grooves 119.
For the present embodiment, the mixing box 102 is disposed inside the mixing chamber 105, the illumination box 103 is disposed inside the illumination chamber 106, the ultraviolet light source 104 for performing ultraviolet light irradiation is disposed on the top of the illumination chamber 106, and the stirring structure for stirring is disposed on the top of the mixing chamber 105; when the mixing box 102 and the illumination box 103 are installed, the positioning bracket 107 can be inserted into the positioning opening 108 to position the illumination box 103 and the mixing box 102, so as to facilitate the installation of the illumination box 103 and the mixing box 102; the fixing component is used for fixing the mixing box 102 and the illumination box 103, the pressure spring 110 is used for abutting against the fixing frame 111, so that one end of the fixing frame 111 enters the fixing port 109, the mixing box 102 and the illumination box 103 are fixed, when the illumination box 103 or the mixing box 102 needs to be disassembled, the fixing frame 111 is pushed, the fixing frame 111 is withdrawn from the inside of the fixing port 109, and the mixing box 102 or the illumination box 103 can be disassembled; the stirring structure is used for stirring a mixture in the mixing box 102 to accelerate reaction efficiency, the mounting plate 113 can move up and down under the action of the telescopic cylinder 112, the stirring rod 115 can rotate under the action of the driving motor 114, when stirring is needed, the telescopic cylinder 112 drives the mounting plate 113 to move down, the stirring rod 115 moves into the mixing box 102, the driving motor 114 can drive the stirring rod 115 to rotate when running, so that the mixture in the mixing box 102 is stirred, after stirring is completed, the telescopic cylinder 112 drives the mounting plate 113 to move up, the whole stirring structure is reset to be integrally located at the upper part of the mixing box 102, the mixing box 102 can be taken out from the inside of the mixing cavity 105, so that a worker can conveniently treat the stirred mixture, the guard box 116 is arranged outside the driving motor 114, and the guard box 116 can protect the driving motor 114, so that the service life of the driving motor 114 is prolonged; the sealing plate 117 can slide inside the receiving groove 119, the connecting spring 118 abuts against the sealing plate 117, and the sealing plate 117 seals the mixing cavity 105 and the illumination cavity 106 under the action of the connecting spring 118 to prevent temperature dissipation.
When preparing the formaldehyde-free melamine retanning agent, firstly weighing 100-200 parts of phenol monomer, 100-250 parts of melamine, 50-100 parts of formaldehyde, 1-2 parts of sodium sulfate vulcanizing agent and 20-70 parts of nano-scale titanium dioxide, placing the phenol monomer and the sodium sulfate vulcanizing agent in the mixing box 102, adjusting the pH value in the mixing box 102, enabling the phenol monomer and the sodium sulfate vulcanizing agent to carry out mixed reaction under an alkaline condition to obtain a modified monomer, wherein the reaction time is 2-7 hours, the reaction temperature is 50-120 ℃, taking out the obtained modified monomer from the mixing box 102, placing formaldehyde, melamine and 300 parts of pure water into the mixing box 102 to carry out reaction to obtain a methylol melamine aqueous solution, placing the modified monomer into the mixing box 102 to carry out end-sealing condensation with the methylol melamine aqueous solution for 2-8 hours, the reaction temperature is 50-120 ℃, obtaining a modified melamine resin solution, taking out the modified melamine resin solution from the mixing box 102 and placing the modified melamine aqueous solution into the light box 103, adding the nano-scale titanium dioxide into the light box 103, opening the light source of the melamine 100, and drying the melamine resin to obtain the formaldehyde-free retanning resin solution, and finally drying the formaldehyde-formaldehyde resin solution to obtain the formaldehyde-free retanning agent.
Example 1:
weighing 150 parts of phenol monomer, 100 parts of melamine, 100 parts of formaldehyde, 1.5 parts of sodium sulfate vulcanizing agent and 60 parts of nano-scale titanium dioxide, placing the phenol monomer and the sodium sulfate vulcanizing agent in a mixing box 102, adjusting the pH value in the mixing box 102, enabling the phenol monomer and the sodium sulfate vulcanizing agent to carry out mixed reaction under an alkaline condition to obtain a modified monomer, taking the obtained modified monomer out of the mixing box 102 at the reaction temperature of 110 ℃, placing the formaldehyde, the melamine and 300 parts of pure water into the mixing box 102 to carry out reaction to obtain a methylolmelamine aqueous solution, placing the modified monomer into the mixing box 102 to carry out end-capping condensation with the methylolmelamine aqueous solution for 6 hours at the reaction temperature of 110 ℃ to obtain a modified melamine resin solution, taking the modified melamine resin solution out of the mixing box 102 and placing the modified melamine resin solution into an illumination box 103, adding the nano-scale titanium dioxide into the illumination box 103, opening an ultraviolet light source 104 to carry out irradiation for 48 hours to obtain a melamine-free resin solution, and finally taking the melamine-free resin solution out of the illumination box 103 to obtain a melamine retanning agent.
Example 2:
firstly weighing 200 parts of phenol monomer, 100 parts of melamine, 60 parts of formaldehyde, 2 parts of sodium sulfate vulcanizing agent and 60 parts of nano-scale titanium dioxide, placing the phenol monomer and the sodium sulfate vulcanizing agent in a mixing box 102, adjusting the pH value in the mixing box 102, carrying out mixed reaction on the phenol monomer and the sodium sulfate vulcanizing agent under an alkaline condition to obtain a modified monomer, carrying out reaction at the reaction temperature of 100 ℃ for 7h, taking out the obtained modified monomer from the mixing box 102, placing formaldehyde, melamine and 300 parts by mass of pure water into the mixing box 102 for reaction to obtain a methylolmelamine aqueous solution, placing the modified monomer into the mixing box 102 for carrying out end-capping condensation with the methylolmelamine aqueous solution for 7h at the reaction temperature of 100 ℃ to obtain a modified melamine resin solution, taking out the modified melamine resin solution from the mixing box 102 and placing the modified melamine resin solution into an illumination box 103, adding the titanium dioxide into the illumination box 103, opening an ultraviolet light source 104 for irradiation for 48h to obtain a formaldehyde-free resin solution, and finally taking out the formaldehyde-free resin solution from the illumination box 103 for carrying out and carrying out a nano-scale retanning and drying the formaldehyde-free melamine resin solution to obtain the nano-type melamine retanning agent.
Example 3:
weighing 100 parts of phenol monomer, 150 parts of melamine, 60 parts of formaldehyde, 1.5 parts of sodium sulfate vulcanizing agent and 45 parts of nano-scale titanium dioxide, placing the phenol monomer and the sodium sulfate vulcanizing agent in a mixing box 102, adjusting the pH value in the mixing box 102, enabling the phenol monomer and the sodium sulfate vulcanizing agent to carry out mixed reaction under an alkaline condition to obtain a modified monomer, taking the obtained modified monomer out of the mixing box 102 at the reaction temperature of 90 ℃, placing the formaldehyde, the melamine and 300 parts of pure water into the mixing box 102 to carry out reaction to obtain a methylolmelamine aqueous solution, placing the modified monomer into the mixing box 102 to carry out end-capping condensation with the methylolmelamine aqueous solution for 5 hours at the reaction temperature of 90 ℃ to obtain a modified melamine resin solution, taking the modified melamine resin solution out of the mixing box 102 and placing the modified melamine resin solution into an illumination box 103, adding the nano-scale titanium dioxide into the illumination box 103, opening an ultraviolet light source 104 to carry out irradiation for 24 hours to obtain a formaldehyde-free resin solution, and finally taking the formaldehyde-free amine resin solution out of the illumination box 103 to carry out a formaldehyde-free retanning agent and drying the melamine resin solution to obtain the formaldehyde-free retanning agent.
Example 4:
weighing 200 parts of phenol monomer, 200 parts of melamine, 50 parts of formaldehyde, 2 parts of sodium sulfate vulcanizing agent and 50 parts of nano titanium dioxide, placing the phenol monomer and the sodium sulfate vulcanizing agent in the mixing box 102, adjusting the pH value in the mixing box 102, carrying out mixed reaction on the phenol monomer and the sodium sulfate vulcanizing agent under an alkaline condition to obtain a modified monomer, carrying out reaction at the temperature of 120 ℃ for 7h, taking out the obtained modified monomer from the mixing box 102, placing formaldehyde, melamine and 300 parts by mass of pure water into the mixing box 102 for reaction to obtain a methylolmelamine aqueous solution, placing the modified monomer into the mixing box 102 for carrying out end-capping condensation with the methylolmelamine aqueous solution for 8h at the reaction temperature of 120 ℃ to obtain a modified melamine resin solution, taking out the modified melamine resin solution from the mixing box 102, placing the modified melamine resin solution into the illumination box 103, adding titanium dioxide into the illumination box 103, opening the ultraviolet light source 104 for irradiation for 48h to obtain a formaldehyde-free resin solution, and finally taking out the formaldehyde-free resin solution from the illumination box 103 for carrying out and carrying out a nano melamine retanning and drying to obtain the nano melamine resin solution.
While the above disclosure describes one or more preferred embodiments of the present invention, it is not intended to limit the scope of the claims to such embodiments, and one skilled in the art will understand that all or a portion of the processes performed in the above embodiments may be practiced without departing from the spirit and scope of the claims.
Claims (7)
1. A formaldehyde-free melamine retanning agent is characterized in that,
the feed comprises the following raw materials in parts by weight: 100 to 200 parts of phenol monomer, 100 to 250 parts of melamine, 50 to 100 parts of formaldehyde, 1 to 2 parts of sodium sulfate vulcanizing agent and 20 to 70 parts of nano-scale titanium dioxide.
2. A method for preparing a formaldehyde-free melamine retanning agent, for preparing the formaldehyde-free melamine retanning agent according to claim 1, comprising the steps of:
weighing the raw materials in parts by weight respectively;
mixing and reacting a phenol monomer and a sodium sulfate vulcanizing agent under an alkaline condition to obtain a modified monomer, wherein the reaction time is 2-7 h, and the reaction temperature is 50-120 ℃;
reacting formaldehyde, melamine and 300 parts by mass of pure water to prepare a methylol melamine aqueous solution;
carrying out end-capping condensation on a modified monomer and a methylol melamine aqueous solution to obtain a modified melamine resin solution;
adding nano-scale titanium dioxide into the modified melamine resin solution, and irradiating for 24-48 h under the condition of ultraviolet light to obtain a formaldehyde-free melamine resin solution;
and (3) performing powder spraying and drying on the formaldehyde-free melamine resin solution to obtain the formaldehyde-free melamine retanning agent.
3. A process for the preparation of formaldehyde-free melamine retanning agents as claimed in claim 2,
in the step of carrying out end-capping condensation on the modified monomer and the aqueous solution of the methylol melamine to obtain the modified melamine resin solution: the reaction time is 2-8 h, and the reaction temperature is 50-120 ℃.
4. A formaldehyde-free melamine retanning agent production apparatus adapted to the formaldehyde-free melamine retanning agent production method according to claim 3,
including organism, mixing box, illumination case and ultraviolet source, the organism interval is provided with mixing chamber and illumination chamber, ultraviolet source sets up the top side in illumination chamber, the mixing box with the connection is dismantled to the organism, the mixing box is located the inside of mixing chamber, the illumination case with the connection is dismantled to the organism, the illumination case is located the inside in illumination chamber.
5. A formaldehyde-free melamine retanning agent preparation plant as claimed in claim 4,
the hybrid chamber with the side in illumination chamber all is provided with fixed subassembly, the hybrid chamber with the side of illumination case all is provided with fixed mouthful, fixed subassembly includes pressure spring and mount, the both ends of pressure spring respectively with the organism with mount fixed connection, the mount with organism sliding connection, the one end of mount is located the inside of fixed mouthful.
6. A formaldehyde-free melamine retanning agent preparation plant as claimed in claim 5,
the preparation equipment of formaldehyde-free melamine retanning agent still includes the stirring structure, the stirring structure sets up the inside of hybrid chamber, the stirring structure includes telescopic cylinder, mounting panel, driving motor and puddler, telescopic cylinder is fixed to be set up the top side of hybrid chamber, the mounting panel with telescopic cylinder's output fixed connection, driving motor fixed mounting be in the bottom of mounting panel, the puddler with driving motor's output fixed connection.
7. A formaldehyde-free melamine retanning agent preparation plant as claimed in claim 6,
the stirring structure further comprises a protective box, the protective box is fixedly connected with the mounting plate, and the protective box is located outside the driving motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210562588.4A CN115181819A (en) | 2022-05-23 | 2022-05-23 | Formaldehyde-free melamine retanning agent, preparation method and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210562588.4A CN115181819A (en) | 2022-05-23 | 2022-05-23 | Formaldehyde-free melamine retanning agent, preparation method and equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115181819A true CN115181819A (en) | 2022-10-14 |
Family
ID=83513165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210562588.4A Pending CN115181819A (en) | 2022-05-23 | 2022-05-23 | Formaldehyde-free melamine retanning agent, preparation method and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115181819A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3852374A (en) * | 1971-11-26 | 1974-12-03 | Basf Ag | Tanning agents |
| CN103665290A (en) * | 2013-12-06 | 2014-03-26 | 上海金狮化工有限公司 | Preparation method for low-formaldehyde melamine resin retanning agent |
| CN108588302A (en) * | 2018-03-06 | 2018-09-28 | 四川大学 | A kind of preparation method of formaldehydeless melmac retanning agent |
| CN109320756A (en) * | 2018-10-09 | 2019-02-12 | 河南骏化发展股份有限公司 | A kind of low-methoxyl aldehyde melamine foam material and preparation method thereof |
| CN112779371A (en) * | 2021-01-14 | 2021-05-11 | 史密特(南京)皮革化学品有限公司 | Formaldehyde-free melamine retanning agent, preparation method and equipment |
| CN113713586A (en) * | 2021-08-25 | 2021-11-30 | 广西瑞朗生物科技有限公司 | Spray for removing formaldehyde |
-
2022
- 2022-05-23 CN CN202210562588.4A patent/CN115181819A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3852374A (en) * | 1971-11-26 | 1974-12-03 | Basf Ag | Tanning agents |
| CN103665290A (en) * | 2013-12-06 | 2014-03-26 | 上海金狮化工有限公司 | Preparation method for low-formaldehyde melamine resin retanning agent |
| CN108588302A (en) * | 2018-03-06 | 2018-09-28 | 四川大学 | A kind of preparation method of formaldehydeless melmac retanning agent |
| CN109320756A (en) * | 2018-10-09 | 2019-02-12 | 河南骏化发展股份有限公司 | A kind of low-methoxyl aldehyde melamine foam material and preparation method thereof |
| CN112779371A (en) * | 2021-01-14 | 2021-05-11 | 史密特(南京)皮革化学品有限公司 | Formaldehyde-free melamine retanning agent, preparation method and equipment |
| CN113713586A (en) * | 2021-08-25 | 2021-11-30 | 广西瑞朗生物科技有限公司 | Spray for removing formaldehyde |
Non-Patent Citations (1)
| Title |
|---|
| 圣倩倩等: "园林植物生态功能研究与应用", 30 April 2020, 南京：东南大学出版社, pages: 073 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105385135B (en) | European type wall lamp | |
| CN1717323A (en) | Composite of aluminum alloy and resin composition and process for producing the same | |
| AU2013244901A1 (en) | Binders and associated products | |
| CN115181819A (en) | Formaldehyde-free melamine retanning agent, preparation method and equipment | |
| ATE265420T1 (en) | METHOD FOR PRODUCING 1,4-DIAMINO-2-METHOXYMETHYL-BENZENE AND SALTS THEREOF AND THE USE OF THESE COMPOUNDS IN DYES FOR KERATIN FIBERS | |
| DE1768888A1 (en) | New Disecondary Diamines, Processes for Their Manufacture and Use | |
| CN106861719B (en) | A kind of preparation method of superelevation sulfonic acid density biomass carbon solid acid | |
| CN112867748B (en) | Ultra-fast cyclic ether-amine photopolymerization and use thereof | |
| ATE28181T1 (en) | PROCESS FOR THE MANUFACTURE OF SELF-LINKING SYNTHETIC RESINS AND THEIR USE. | |
| CN105330801A (en) | In-situ reinforcing and toughening urea resin moulding compound and preparing method thereof | |
| EP0075533A1 (en) | Heat-curable epoxy-resin compositions | |
| CN109535382A (en) | A kind of non yellowing polyurethane sponge and preparation method thereof | |
| DE102011113395A1 (en) | New cyclohexylamine compounds useful for the preparation of a hardened product, preferably epoxide resin, which is useful e.g. in electrical equipments and for manufacturing rotor blades for wind turbines | |
| CN1483704A (en) | Ecological heath function treatment agent and preparation, use in car inner decoration material | |
| CN110105715A (en) | The preparation method of the co-curing system of epoxy resin-base composite material and ethylene propylene diene rubber | |
| CN1717444A (en) | Epoxy resin curing agent for enhanced wear resistance and weatherability of cured materials | |
| CN106381017B (en) | A kind of low-temperature setting antimicrobial form epoxy coating and preparation method thereof | |
| JP2009024097A (en) | Method for producing carbodiimide compound | |
| BR8807786A (en) | PROCESS FOR PREPARING DISPERSES OF CATODICALLY PRECIPITABLE BINDING WITH POLYISOCYANATE-BASED RETICULATORS MIXED WITH HYDROXYL GROUPS | |
| JPS58176047A (en) | Composition for molding of casting mold | |
| CN114716952B (en) | Efficient structural adhesive for temporary bonding and application thereof | |
| US4623746A (en) | Alkyleneglycol-bis(4-methylaminobenzoates) | |
| US3839265A (en) | Polymeric composition and method | |
| EP0487452A2 (en) | Curable epoxy resin composition | |
| US3279879A (en) | Process for the fixation of dyes on cel- lulose and fixing agent therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |