CN117801675B - A dry and ultra-wear-resistant organic silicon leather surface treatment agent, and its preparation and application - Google Patents
A dry and ultra-wear-resistant organic silicon leather surface treatment agent, and its preparation and application Download PDFInfo
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- CN117801675B CN117801675B CN202311845472.2A CN202311845472A CN117801675B CN 117801675 B CN117801675 B CN 117801675B CN 202311845472 A CN202311845472 A CN 202311845472A CN 117801675 B CN117801675 B CN 117801675B
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- 239000010985 leather Substances 0.000 title claims abstract description 61
- 239000012756 surface treatment agent Substances 0.000 title claims abstract description 24
- 229910052710 silicon Inorganic materials 0.000 title claims description 13
- 239000010703 silicon Substances 0.000 title claims description 13
- 238000002360 preparation method Methods 0.000 title abstract description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title description 12
- 229920002545 silicone oil Polymers 0.000 claims abstract description 87
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 56
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 55
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 47
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 26
- 229920000570 polyether Polymers 0.000 claims abstract description 26
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims description 58
- 239000001257 hydrogen Substances 0.000 claims description 36
- 229910052739 hydrogen Inorganic materials 0.000 claims description 36
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 32
- 239000003054 catalyst Substances 0.000 claims description 23
- 239000003112 inhibitor Substances 0.000 claims description 21
- 230000008033 biological extinction Effects 0.000 claims description 18
- 239000003921 oil Substances 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 17
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 16
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 7
- 229910052731 fluorine Inorganic materials 0.000 claims description 7
- 239000011737 fluorine Substances 0.000 claims description 7
- -1 polymethylsiloxane Polymers 0.000 claims description 6
- 229910052697 platinum Inorganic materials 0.000 claims description 5
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 4
- 229920002521 macromolecule Polymers 0.000 claims description 4
- 125000002947 alkylene group Chemical group 0.000 claims description 3
- 125000003700 epoxy group Chemical group 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000011282 treatment Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000013329 compounding Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 17
- 239000004593 Epoxy Substances 0.000 description 9
- 238000005299 abrasion Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000009736 wetting Methods 0.000 description 8
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 7
- 229920002635 polyurethane Polymers 0.000 description 7
- 239000004814 polyurethane Substances 0.000 description 7
- JQZGUQIEPRIDMR-UHFFFAOYSA-N 3-methylbut-1-yn-1-ol Chemical group CC(C)C#CO JQZGUQIEPRIDMR-UHFFFAOYSA-N 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 3
- 229910002012 Aerosil® Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000013065 commercial product Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 239000002649 leather substitute Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 238000005464 sample preparation method Methods 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 241000282994 Cervidae Species 0.000 description 1
- 241001183967 Isodon Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- FJQXCDYVZAHXNS-UHFFFAOYSA-N methadone hydrochloride Chemical compound Cl.C=1C=CC=CC=1C(CC(C)N(C)C)(C(=O)CC)C1=CC=CC=C1 FJQXCDYVZAHXNS-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
本发明属于有机硅皮革技术领域，更具体地，涉及一种干爽超耐磨有机硅皮革表面处理剂、其制备和应用。本发明提供的干爽超耐磨有机硅表面处理剂，通过复配乙烯基硅油、乙烯基氟硅油和聚醚改性硅油等组分，尤其是乙烯基氟硅油的引入，显著提高了有机硅皮革的耐磨损性，得到了一种特别适用于有机硅皮革的干爽超耐磨有机硅皮革表面处理剂。本发明有机硅皮革表面处理剂配方简单，配方原料易得，无需单独设计合成，具备广泛重复操作特性。丰富了现有的皮革处理剂类型，填补了有机硅皮革表面处理剂市场上缺失的空白。
The present invention belongs to the technical field of silicone leather, and more specifically, relates to a dry and super wear-resistant silicone leather surface treatment agent, and its preparation and application. The dry and super wear-resistant silicone surface treatment agent provided by the present invention significantly improves the wear resistance of silicone leather by compounding components such as vinyl silicone oil, vinyl fluorosilicone oil and polyether modified silicone oil, especially the introduction of vinyl fluorosilicone oil, and obtains a dry and super wear-resistant silicone leather surface treatment agent that is particularly suitable for silicone leather. The silicone leather surface treatment agent of the present invention has a simple formula, and the formula raw materials are easy to obtain. It does not need to be designed and synthesized separately, and has the characteristics of wide repeatability. It enriches the existing types of leather treatment agents and fills the gap in the market of silicone leather surface treatment agents.
Description
Technical Field
The invention belongs to the technical field of organosilicon leather, and particularly relates to a dry and super wear-resistant organosilicon leather surface treating agent, and preparation and application thereof.
Background
At present, the artificial leather is mostly leather of polyurethane, PVC, PE and the like, but the main defects of the artificial leather are poor ageing performance; the organosilicon leather is durable, high in softness and good in tensile strength, but has a astringent hand feeling, and the surface of the organosilicon leather needs to be treated. The surface of the leather is coated with the organosilicon surface treating agent, so that the surface of the leather has the characteristics of dry, slip and wear resistance.
The leather surface treating agent sold in the market mainly aims at polyurethane type leather, and the polyurethane molecular chain in the treating agent is grafted with organic silicon molecules, has high polarity and can migrate to the surface of polyurethane type leather, so that the leather surface treating agent has the characteristic of dry and slippery. The currently marketed leather surface treating agent for polyurethane type contains polydimethylsiloxane, which mainly plays a role in providing a smooth feel, while the organosilicon in the organosilicon leather is mainly polydimethylsiloxane, which belongs to the same kind of material, and the polydimethylsiloxane contained in the leather surface treating agent for polyurethane type does not migrate to the surface of the organosilicon leather, so the surface treating agent on the market is not suitable for the organosilicon leather, and the development of new surface treating agent suitable for the organosilicon leather is imperative.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a dry and super wear-resistant organosilicon leather surface treating agent, and preparation and application thereof, so as to solve the technical problems that the prior art surface treating agent is not suitable for organosilicon leather and lacks an effective organosilicon leather surface treating agent.
The invention provides a dry super wear-resistant organosilicon leather surface treating agent, which is characterized by comprising the following components in parts by weight: 60-80 parts of vinyl silicone oil; 10-15 parts of vinyl fluorosilicone oil; 0.1-1 part of polyether modified silicone oil; 0.5-2 parts of wax powder; 10-15 parts of extinction powder; 0.2-1 part of catalyst; 0.02-1 part of inhibitor; 10-15 parts of hydrogen-containing silicone oil.
Preferably, the viscosity of the vinyl silicone oil is 20000 to 50000Pa s.
Preferably, the vinyl fluorosilicone oil contains 10 to 30% of fluorine and 0.0143 to 0.0184mol/100g of vinyl.
Preferably, the polyether modified silicone oil is synthesized by connecting polyether and alkylene oxide on a chain unit of a polymethylsiloxane macromolecule, the viscosity of the polyether modified silicone oil is 700-1000Pa & lts & gt, and the epoxy group content is 1.55-1.9wt%.
Preferably, the wax powder is a modified PE wax powder having a melting point below 120 ℃.
Preferably, the particle size of the matting powder is between 1 and 15 μm, more preferably between 2 and 10 μm.
Preferably, the hydrogen content of the hydrogen-containing silicone oil is 0.79-1.55 mol/100g; the ratio of the silicon to the hydrogen is 1 to 1.2; the hydrogen-containing silicone oil comprises side chain hydrogen-containing silicone oil and terminal chain hydrogen-containing silicone oil.
According to another aspect of the present invention, there is provided a method for preparing the surface treating agent, comprising the steps of:
(1) Sequentially adding the vinyl silicone oil, the vinyl fluorine-containing silicone oil, the polyether modified silicone oil and the wax powder according to the weight ratio, and uniformly stirring;
(2) Adding the inhibitor, the extinction powder and the hydrogen-containing silicone oil, and uniformly stirring;
(3) And finally, adding the catalyst, and stirring uniformly to obtain the surface treating agent.
According to another aspect of the present invention there is provided the use of the surface treatment agent as a surface treatment agent for silicone leather.
In general, the above technical solutions conceived by the present invention have the following compared with the prior art
The beneficial effects are that:
(1) The invention provides a dry super wear-resistant organosilicon surface treating agent, which is particularly suitable for organosilicon leather and is prepared by compounding components such as vinyl silicone oil, vinyl fluorosilicone oil, polyether modified silicone oil and the like, particularly introducing the vinyl fluorosilicone oil, so that the wear resistance of organosilicon leather is obviously improved.
(2) The organosilicon leather surface treating agent has the advantages of simple formula, easily available raw materials, no need of independent design and synthesis, and wide and repeated operation characteristic. The surface treating agent for the organic silicon coating is basically not available in the market, the surface treating agent for the organic silicon can be implemented in the first example, the surface of the organic silicon leather can have the characteristics of dry, sliding and wear resistance after being used, a new solution is provided for the organic silicon type leather treating agent, the existing leather treating agent type is enriched, and the blank of the organic silicon leather surface treating agent in the market is filled.
(3) The preparation method of the surface treating agent for the organic silicon leather is simple, and the key point is that the material is uniformly dispersed, and a compact treatment layer is formed on the surface of the organic silicon leather after the surface treating agent is coated and solidified during application, so that the organic silicon leather is dry and super-wear-resistant.
Drawings
FIG. 1 is a photograph of the surface of an embodiment of the present invention after the silicone leather surface treating agent and the control sample were cured and rubbed 10000 times.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The invention provides a dry super wear-resistant organosilicon leather surface treating agent, which comprises the following components in parts by weight: 60-80 parts of vinyl silicone oil, 10-15 parts of vinyl fluorosilicone oil, 0.1-1 part of polyether modified silicone oil, 0.5-2 parts of wax powder, 10-15 parts of matting powder, 0.2-1 part of catalyst, 0.02-1 part of inhibitor and 10-15 parts of hydrogen-containing silicone oil.
In order to improve the abrasion resistance of the surface treatment agent, in some embodiments of the present invention, the vinyl silicone oil is a vinyl silicone oil having a high viscosity, such as 20000 to 50000Pa s in some embodiments, and preferably, a terminal chain vinyl silicone oil, that is, a vinyl group is selected at both end positions of the silicone oil.
According to the invention, the vinyl fluorosilicone oil is introduced into the formula of the surface treatment agent, and experiments show that the introduction of the vinyl fluorosilicone oil can reduce the surface tension and improve the wear resistance. However, the fluorine content of the vinyl fluorine-containing silicone oil should not be too high, otherwise the polarity is too large, and the steric hindrance effect hinders the polymerization, so that a crosslinked network is difficult to form. In some embodiments, the vinyl fluorosilicone oil has a fluorine content of 10-30% and a vinyl content of 0.0143-0.0184 mol/100g. In the examples, a vinyl fluorosilicone oil having a fluorine content of 30% and a vinyl content of 0.0143mol/100g was used, and the structure thereof was as follows:
In some embodiments, the polyether modified silicone oil is polyether epoxy co-modified silicone oil, which is synthesized by grafting polyether macromolecules and alkylene oxides on the chain links of polymethylsiloxane macromolecules, wherein the viscosity is 700-1000Pa & lts & gt, and the epoxy group content is 1.55-1.9wt%. The polyether modified silicone oil is used for improving the leveling property of the surface treatment agent, and is generally added in an amount of 0.1-1 part in view of cost and material strength.
In some embodiments, the wax powder is modified PE wax powder, the melting point of the wax powder is generally below 120 ℃, the curing temperature of the surface treatment agent is between 120 and 150 ℃, the wax powder can be favorable for dispersing and leveling the surface treatment agent after being heated at a high temperature, the hand feeling can be enhanced, and the preferable adding amount is 0.5 to 2 parts.
In some embodiments, the matting powder has a particle size of between 1 and 15 μm, preferably between 2 and 10 μm. For colored materials, the introduction of matting agents is generally used for matting. In addition to the extinction effect, experiments show that the particle sizes of the extinction powder have certain influence on the wear resistance of the organosilicon leather surface treatment agent, and the wear resistance of the surface treatment agent prepared from the extinction powder with larger particle size is relatively better.
In some embodiments, the catalyst is a platinum catalyst, and the platinum catalyst comprises but is not limited to one of the types of chloroplatinic acid isopropanol solution, chloroplatinic acid tetrahydrofuran solution, chloroplatinic acid-divinyl tetramethyl disiloxane complex, chloroplatinic acid-1, 3,5, 7-tetravinyl-1, 3,5, 7-tetramethyl-cyclotetrasiloxane, chloroplatinic acid-divinyl tetramethyl disiloxane and the like, and in a preferred embodiment, the platinum catalyst is selected from the group consisting of an isopropanol solution of chloroplatinic acid with a platinum content of 5000ppm, and the addition amount of the isopropanol solution is 0.2-1 part.
In some embodiments, the inhibitor is methylbutynol, added in an amount of 0.02-1 part, the inhibitor is added mainly to regulate the reaction rate, and the inhibitor is generally added before the catalyst, i.e. the inhibitor is added and dispersed before the catalyst is added; if the catalyst is added in advance, the partial region to which the inhibitor is added is likely to react in advance to form a lump.
In some embodiments, the hydrogen-containing silicone oil has a hydrogen content of 0.79 to 1.55mol/100g. The hydrogen-containing silicone oil is taken as a cross-linking agent, and the hydrogen-containing silicone oil with a terminal chain and the hydrogen-containing silicone oil with a side chain are generally selected to be compounded according to the requirement (the terminal chain and the side chain respectively contain Si-H bonds) so as to achieve the purposes of chain extension and cross-linking network density improvement. The added amount is matched with the added amount of vinyl silicone oil, and the ratio of silicon to hydrogen is 1-1.2.
The invention also provides a preparation method of the surface treating agent, which comprises the following steps:
(1) Sequentially adding the vinyl silicone oil, the vinyl fluorine-containing silicone oil, the polyether modified silicone oil and the wax powder according to the weight ratio, and stirring to uniformly disperse the wax powder therein;
(2) Adding the inhibitor, the extinction powder and the hydrogen-containing silicone oil, and stirring to disperse the extinction powder therein;
(3) And finally, adding the catalyst, and stirring uniformly to obtain the surface treating agent.
The surface treating agent provided by the invention can be used as an organosilicon leather surface treating agent. The method relates to the field of organosilicon leather, in particular to first half treatment for organosilicon leather preparation, which ensures that the surface of the organosilicon leather has dry and smooth and wear-resistant properties, is widely applied to the aspects of household textiles, clothing daily necessities, automobile interiors and the like, and meets the demands of people on high-quality daily necessities.
The "Dayi" mentioned in some of the raw material sources used in the examples below represents Shandong Dayi chemical Co., ltd., "Ling Wei" represents Guangzhou Rabdosia technology Co., ltd., "Ruo He" represents Ningbo Ruo He high new material technology Co., ltd., "Tianshi" represents Nanjing Tianshi new material technology Co., ltd.).
Example 1
The dry and super wear-resistant organosilicon leather surface treating agent comprises, by weight, 75 parts of vinyl silicone oil (viscosity 20000Pa & lt s, vinyl content 0.0514mol/100G, large-scale DY-V401-20000), 10 parts of vinyl fluorosilicone oil (fluorine content 30%, vinyl content 0.0143mol/100G, new chemical (Shandong) Co., ltd., product brand NFS 7300-G30), 0.5 part of polyether epoxy co-modified silicone oil (large-scale DY-ETE 301H), 1 part of wax powder (Tianshi Twax-1411), 10 parts of matting powder (Ling Wei-10, average particle size 10 μm), 0.5 part of catalyst (5000 ppm of chloroplatinic acid isopropyl alcohol solution), 0.02 part of inhibitor methylbutynol, 13 parts of hydrogen-containing silicone oil (containing wetting RH-3 3 parts and wetting RH-H6 parts). The preparation method comprises the following steps:
the first step: according to the weight portions, 75 portions of vinyl silicone oil, 10 portions of vinyl fluorine-containing silicone oil, 0.5 portion of polyether epoxy co-modified silicone oil and 1 portion of wax powder are added in sequence and stirred uniformly to disperse the wax powder uniformly;
And a second step of: adding 0.02 part of inhibitor, 10 parts of extinction powder and 13 parts of hydrogen-containing silicone oil, and uniformly stirring to disperse the extinction powder;
and a third step of: finally, adding 0.5 part of catalyst, and stirring uniformly to obtain the surface treating agent.
Example 2
The dry and super wear-resistant organosilicon leather surface treating agent comprises, by weight, 75 parts of vinyl silicone oil (viscosity 20000Pa s, vinyl content 0.0514 mol/100G), 10 parts of vinyl fluorosilicone oil (fluorine content 30%, vinyl content 0.0143mol/100G, product name NFS7300-G30 of New Chemie (Shandong) Co., ltd.), 0.5 part of polyether epoxy co-modified silicone oil (Dayi DY-ETE 301H), 1 part of wax powder (Tianshi Twax-1411), 0.5 part of matting powder (Ling Wei-2, average particle size 2 μm), 13 parts of hydrogen-containing silicone oil (comprising wetting RH-LHC-3 3 parts and wetting RH-H6 parts), and 0.02 part of an inhibitor methyl butynol. The preparation method comprises the following steps:
the first step: according to the weight portions, 75 portions of vinyl silicone oil, 10 portions of vinyl fluorine-containing silicone oil, 0.5 portion of polyether epoxy co-modified silicone oil and 1 portion of wax powder are added in sequence and stirred uniformly to disperse the wax powder uniformly;
And a second step of: adding 0.02 part of inhibitor, 10 parts of extinction powder and 13 parts of hydrogen-containing silicone oil, and uniformly stirring to disperse the extinction powder;
and a third step of: finally, adding 0.5 part of catalyst, and stirring uniformly to obtain the surface treating agent.
Comparative example 1
The dry and super wear-resistant organosilicon leather surface treating agent comprises, by weight, 75 parts of vinyl silicone oil (viscosity 20000Pa s, vinyl content 0.0514mol/100 g), 0.5 part of polyether epoxy co-modified silicone oil (Dayi DY-ETE 301H), 1 part of wax powder, 10 parts of matting powder (Ling Wei-10, average particle size of 10 μm), 0.5 part of catalyst (5000 ppm of chloroplatinic acid isopropanol solution), 0.02 part of inhibitor, and 13 parts of hydrogen-containing silicone oil (comprising wetting RH-LHC-3 3 parts and wetting RH-H6.10 parts). The preparation method comprises the following steps:
the first step: according to the weight portions, 75 portions of vinyl silicone oil, 10 portions of vinyl fluorine-containing silicone oil, 0.5 portion of polyether epoxy co-modified silicone oil and 1 portion of wax powder are added in sequence and stirred uniformly to disperse the wax powder uniformly;
And a second step of: adding 0.02 part of inhibitor, 10 parts of extinction powder and 13 parts of hydrogen-containing silicone oil, and uniformly stirring to disperse the extinction powder;
and a third step of: finally, adding 0.5 part of catalyst, and stirring uniformly to obtain the surface treating agent.
Comparative example 2
The dry and super wear-resistant organosilicon leather surface treating agent comprises, by weight, 75 parts of vinyl silicone oil (viscosity 20000Pa & lts, vinyl content 0.0514mol/100 g), 0.5 part of polyether epoxy co-modified silicone oil (Dayi DY-ETE 301H), 1 part of wax powder (Tianshi Twax-1411), 10 parts of matting powder (Ling Wei-2, average particle size of 2 mu m), 0.5 part of catalyst (5000 ppm of isopropyl chloroplatinate solution), 0.02 part of methyl butynol as an inhibitor, 13 parts of hydrogen-containing silicone oil (containing wetting RH-LHC-3 3 parts and wetting RH-H6 parts). The preparation method comprises the following steps:
The first step: according to the weight portions, 75 portions of vinyl silicone oil, 10 portions of vinyl fluorine-containing silicone oil and 0.5 portion of polyether epoxy co-modified silicone oil and 1 portion of wax powder are added in sequence and stirred uniformly to disperse the wax powder uniformly;
And a second step of: adding 0.02 part of inhibitor, 10 parts of extinction powder and 13 parts of hydrogen-containing silicone oil, and uniformly stirring to disperse the extinction powder;
and a third step of: finally, adding 0.5 part of catalyst, and stirring uniformly to obtain the surface treating agent.
The silicone leather samples treated with the surface treating agents obtained in each example and comparative example were prepared as follows: the surface treating agents prepared in example 1, example 2, comparative example 1 and comparative example 2 were first respectively knife-coated onto the surface of release paper, the wet film knife-coated thickness was 20 μm, cured at 120℃for 3min to give a dense treated layer, then a silicone intermediate layer 120 μm thick was knife-coated on the treated layer surface (100 parts by weight of DY-V401-5000,5000 viscosity vinyl silicone oil; 100 parts by weight of aerosil HB-630; 5 parts by weight of DY-V421-1300,1300 viscosity vinyl silicone oil; 30 parts by weight of De-2750 silicone resin; 0.02 parts by weight of the inhibitor methylbutinol; 0.16 parts by weight of a 5000ppm isopropyl chloroplatinate solution; 3 parts by weight of pigment (Gasheng (Shanghai) New material, JSTN; 8 parts by weight of RH-LHC-3 hydrogen silicone oil; 4 parts by weight of DY-H2O2 hydrogen silicone oil), and then cured at 120℃for 3min; finally, the surface of the cured treatment layer is coated with an organosilicon surface layer (100 parts by weight of DY-V401-5000 and 5000 viscosity vinyl silicone oil; 100 parts by weight of aerosil HB-630; 5 parts by weight of DY-V421-1300 and 1300 viscosity vinyl silicone oil; 30 parts by weight of Deer 2750 silicone resin; 0.02 part by weight of inhibitor methyl butynol; 0.16 part by weight of catalyst 5000ppm of chloroplatinic acid isopropyl alcohol solution; 3 parts by weight of pigment (new material of Shanghai, model JSTN; 8 parts by weight of RH-LHC-3 hydrogen silicone oil; 4 parts by weight of DY-H2O2 hydrogen silicone oil; tackifier DT-16264 1%) by weight) by scraping, and finally the substrate nonwoven fabric is attached, and then the substrate nonwoven fabric is cured at 120 ℃ in an oven, and finally the release paper is peeled off to obtain the to-be-detected organosilicon leather sample obtained by treating the surface treating agent of the above examples and comparative examples (the sample preparation method is similar to the test sample preparation method of the surface treating agent for polyurethane leather in the prior art). The performance test was performed on the samples of the organosilicon leather to be tested corresponding to example 1, example 2, comparative example 1 and comparative example 2, respectively, according to the following method:
hand feeling: and touching the hands.
Abrasion resistance test: martindale abrasion resistance instrument.
The test was carried out according to the GB/T21196.2 standard. After the test, the wear condition of the surface was observed and the corresponding number of times was recorded.
The test results are shown in Table 1:
Products 1 and 2 in Table 1 are commercially available silicone leather products.
The other components in the formulations of the surface treatments of example 1 and example 2 were the same except that the matting powder used was of different particle sizes, the matting powder of example 1 had an average particle size of 10 microns and the matting powder of example 2 had an average particle size of 2 microns. It was found through experiments that the surface treatment agents of example 1 and example 2 were cured at a wet film blade coating thickness of the same 20 μm, and the larger the particle size, the drier the smoother the surface treatment agent was, and the drier the surface treatment agent prepared by using the 10 μm matting powder of example 1 was, after blade coating, significantly better than the drier the surface treatment agent prepared by using the matting powder of example 2 with smaller particle size.
Comparative example 1 was identical to example 1 except that the vinyl fluorosilicone oil of example 1 was not added. Comparative example 2 was identical to example 2 except that the vinyl fluorosilicone oil of example 2 was not added. The average particle size of the matting powder of comparative example 1 was 10 microns and that of example 2 was 2 microns.
It can be seen that when comparative examples 1 and 2 do not contain vinyl fluorosilicone oil, the abrasion resistance is significantly reduced compared with examples 1 and 2, and in particular, the surface treatment agent of comparative example 2 is prepared by using matting powder with smaller particle size, abrasion starts to occur after 2000 times of abrasion, and the abrasion percentage is as high as 4% after 10000 times of abrasion. Fig. 1 is a photograph of 10000 times rubbed by the surface treating agent treated organosilicon leather samples of example 1, example 2, comparative example 1, comparative example 2, commercial product 1 and commercial product 2, respectively, the abrasion resistance of example 1 and example 2 is significantly better than that of comparative example 1 and comparative example 2, and is also significantly better than that of commercial products 1 and 2.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
1. The dry and super wear-resistant organosilicon leather surface treating agent is characterized by comprising the following components in parts by weight:
60-80 parts of vinyl silicone oil;
10-15 parts of vinyl fluorosilicone oil;
0.1-1 part of polyether modified silicone oil;
0.5-2 parts of wax powder;
10-15 parts of extinction powder;
0.2-1 part of catalyst;
0.02-1 part of inhibitor; and
10-15 Parts of hydrogen-containing silicone oil;
the viscosity of the vinyl silicone oil is 20000-50000 Pa & lts & gt;
The fluorine content in the vinyl fluorosilicone oil is 10-30%, and the vinyl content is 0.0143~0.0184 mol/100g; the particle size of the extinction powder is 10 mu m;
the polyether modified silicone oil is synthesized by connecting polyether and alkylene oxide on a chain unit of a polymethylsiloxane macromolecule, the viscosity of the polyether modified silicone oil is 700-1000 Pa s, and the epoxy group content is 1.55-1.9wt%.
2. The surface treatment of claim 1, wherein the wax powder is a modified PE wax powder having a melting point of less than 120 ℃.
3. The surface treatment of claim 1, wherein the catalyst is a platinum catalyst that is one or more of an isopropanol solution of chloroplatinic acid, a tetrahydrofuran solution of chloroplatinic acid, a chloroplatinic acid-divinyl tetramethyl disiloxane complex, chloroplatinic acid-1, 3,5, 7-tetravinyl-1, 3,5, 7-tetramethyl-cyclotetrasiloxane, and chloroplatinic acid-divinyl tetramethyl disiloxane.
4. The surface treatment agent according to claim 1, wherein the hydrogen content of the hydrogen-containing silicone oil is 0.79 to 1.55 mol/100g; the ratio of the silicon to the hydrogen is 1-1.2; the hydrogen-containing silicone oil comprises side chain hydrogen-containing silicone oil and terminal chain hydrogen-containing silicone oil.
5. The method for producing a surface treatment agent according to any one of claims 1 to 4, comprising the steps of:
(1) Sequentially adding the vinyl silicone oil, the vinyl fluorosilicone oil, the polyether modified silicone oil and the wax powder according to the weight ratio, and uniformly stirring;
(2) Adding the inhibitor, the extinction powder and the hydrogen-containing silicone oil, and uniformly stirring;
(3) And finally, adding the catalyst, and stirring uniformly to obtain the surface treating agent.
6. Use of the surface treatment agent according to any one of claims 1 to 4 as a surface treatment agent for silicone leather.
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| CN112898898A (en) * | 2021-01-29 | 2021-06-04 | 东莞市贝特利新材料有限公司 | Organic fluorine-silicon coating for fluororubber elastomer, and preparation method, use method and application thereof |
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