CN101748597B - Brown colorant for water Teflon high-temperature cloth and preparing method thereof - Google Patents
Brown colorant for water Teflon high-temperature cloth and preparing method thereof Download PDFInfo
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- CN101748597B CN101748597B CN200810244004A CN200810244004A CN101748597B CN 101748597 B CN101748597 B CN 101748597B CN 200810244004 A CN200810244004 A CN 200810244004A CN 200810244004 A CN200810244004 A CN 200810244004A CN 101748597 B CN101748597 B CN 101748597B
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Abstract
The invention discloses a brown colorant for water Teflon high-temperature cloth and a method for preparing the brown colorant. The brown colorant is composed of a high-temperature resisting pigment, polytetrafluoroethylene, a functional additive agent, a dispersing wetting agent and deionized water. The materials comprise, by weight percent, 35 to 50 percent of the high-temperature resisting pigment, 10 to 20 percent of the polytetrafluoroethylene, 5 to 10 percent of the functional additive agent, 2 to 20 percent of the dispersing wetting agent, and the balance of deionized water. The brown colorant can be prepared through mixing and grinding all the constituents and implementing quality test, vacuum defoamation and filtering packing. The brown colorant for the water Teflon (PTFE) high-temperature cloth by the method is characterized by long storage stability, good temperature resistance (reaching to more than 400 DEG C), excellent chemical resistance, bright color, good compatibility with PTFE emulsion and high color intensity. The grain diameters can realize that D99 is less than or equal to 5 microns (namely, the average diameter of 99 percent of the grains is less than or equal to 5 microns), and the brown colorant and the method conform to national environmental requirements because the deionized water is taken as base material. The brown colorant has the advantages of simple preparation process, low preparation cost and easy industrialized production.
Description
Technical field
The present invention relates to the coffee-like mill base of a kind of water-based, particularly a kind of water-based Teflon high temperature cloth coffee mill base and preparation method thereof.
Background technology
Teflon (PTFE) is that a kind of surface polarity is very low, is prone to the fluorine material that adheres to.Have excellent chemical-resistant, its dielectric constant is 2.1, and fissipation factor is low, in very wide temperature and frequency range, all has higher stability.Its TENSILE STRENGTH, ABRASION RESISTANCE, creep resistance are poorer than other engineering plastics.Add glass fibre, carbon and graphite and improve its special mechanical performance.Its coefficient of friction is almost all low than any other material, has very high oxygen index (OI), makes its purposes very extensive.
Its purposes mainly is fields such as conveyer belt, electrical equipment adhesive tape, industrial gummed tape, food-grade baking sheet and extraordinary high temperature building mould material.Require face coat heat-resisting, the resistant product like non-stick pan and electric tool such as saw blade, electric drill etc.Colored Teflon (PTFE) high temperature cloth is in the starting stage in China, and color is more single, is that Teflon (PTFE) high temperature cloth prepares and requires forming temperature at 380 ℃ (6～8min) in the process on the one hand.And contain in the system many in organic solvents, common pigments generally surpasses 200 ℃ in temperature, variable color easily, decomposition cause the part to receive temperature different, color distortion is bigger, even bad phenomenon such as black, produces uncontrollable; Be that Teflon (PTFE) surface polarity is very low on the other hand, common mill base is difficult to the PTFE emulsion compatible, and anti-resistant to chemical media, bright-colored degree can not meet the demands simultaneously.Existing market is main with import high-temperature color cloth mainly, and domestic production producer is difficult to reach international user to the color demand, and colored high temperature cloth has vast potential for future development, and coffee color is the most a kind of common representative color.The painted mill base of development Teflon (PTFE) high temperature cloth has become the only way which must be passed of seeking industry development.
Summary of the invention
In order to overcome above-mentioned defective; The present invention provides a kind of brown colorant for water Teflon high-temperature cloth and preparation method thereof; This mill base has excellent storage stability, temperature tolerance, resistant to chemical media and bright-colored degree; Good with Teflon (PTFE) emulsion compatibility, tinctorial strength is high and do not reduce the performance of high temperature cloth.
The present invention for the technical scheme that solves its technical problem and adopt is:
A kind of brown colorant for water Teflon high-temperature cloth is made up of high-temperature resisting pigment, polytetrafluoroethylene (PTFE), functional additive, dispersion moisture agent and deionized water, by the raw material total weight percent:
High-temperature resisting pigment: 35.0%～50.0%;
Polytetrafluoroethylene (PTFE): 10.0%～20.0%;
Functional additive: 5.0%～10.0%;
Dispersion moisture agent: 2.0%～20.0%;
Surplus is a deionized water;
Described high-temperature resisting pigment is at least a kind of in iron oxide black Huang, iron oxide red and the black iron oxide pigment, and its temperature tolerance reaches more than 400 ℃.
The maximum operation (service) temperature of described polytetrafluoroethylene (PTFE) is 290～300 ℃, has extremely low coefficient of friction, good ABRASION RESISTANCE and fabulous chemical stability.
Described functional additive is at least NaOH, KOH, triethanolamine, ethylene glycol, polyethylene glycol, isopropyl alcohol, glycerine, propylene glycol monomethyl ether, EGME, butyl glycol ether, OIT, click conifer antimildew disinfectant, contain a kind of in organosilicon froth breaking polymer, cellulose, bentonite and the macromolecule association thickener.
Described dispersion moisture agent is at least a kind of in the unsaturated carboxylic acid amine of ammonium polyacrylate salt, polycarboxylate sodium, calgon, tween polyphosphoric acids salt, extraordinary polyester modification polyphosphate compound and many anchoring groups.
Described dispersion moisture agent is the ion-type copolymer with the pigment anchoring group.
The preparation method of described brown colorant for water Teflon high-temperature cloth, carry out as follows:
1.. deionized water, polytetrafluoroethylene (PTFE) are put into the dispersion cylinder stir, add dispersion moisture agent then, disperseed 10 minutes, obtain first mixed solution with 400～600r/min speed;
2.. functional additive is added step mix in first mixed solution of gained in 1., obtain second mixed solution;
3.. in the whipping process high-temperature resisting pigment is dropped into 2. second mixed solution of middle gained of step step by step, obtain the pre-dispersed mill base of coffee color;
4.. with step 3. in the pre-dispersed mill base of coffee color of gained disperse to be not less than 30min with the speed of 2000～2500r/min, obtain the coffee-like mill base of premixed;
5.. with step 4. the coffee-like mill base of premixed of gained grind, when average grain diameter≤5 of its 99% particle micron, finish to grind, disperse 15min with the speed of 800r/min, obtain initial coffee-like mill base;
6.. after 5. the initial coffee-like mill base of gained carries out quality testing, vacuum defoamation and filters and packages to step, obtain required brown colorant for water Teflon high-temperature cloth.
The method that the grinding of step described in 5. adopted is at least a kind of in ball milling, basket grinding and the horizontal grinding, and abrasive media is zirconium oxide bead or the ceramic bead of 0.8～1.0mm or 1.0～1.2mm.
The invention has the beneficial effects as follows: each proportioning components of the present invention is suitable; And adopt reasonable preparation method, make that the coffee-like mill base of water-based Teflon (PTFE) heatproof cloth of preparation has that storage stability is long, temperature tolerance good (temperature tolerance reaches more than 400 ℃), resistant to chemical media, bright-colored, good with PTFE emulsion compatibility, tinctorial strength is high and do not reduce the advantage of the performance of high temperature cloth.This coffee color mill base particle diameter can reach D99≤5.0 μ m (average grain diameter of 99% particle≤5 micron), and its pigment content is high, and tinctorial property is strong, and painted integrated cost is low, has good commercial and is worth; It adopts special pigment wetting dispersing agent and stabilizing agent, makes its dispersiveness in good condition, be difficult for flocculation, but room temperature stores for a long time; Be base-material with the deionized water simultaneously, meet the friendly demand of National Environmental; The preparation process is simple, is easy to suitability for industrialized production.
The specific embodiment
The prescription of the embodiment of the invention is referring to table 1:
Table 1: (unit: percentage by weight)
By above-mentioned prescription, the preparation method carries out as follows:
1.. deionized water, polytetrafluoroethylene (PTFE) are put into the dispersion cylinder stir, add dispersion moisture agent then, disperseed 10 minutes, obtain first mixed solution with 400～600r/min speed;
2.. functional additive is added step mix in first mixed solution of gained in 1., obtain second mixed solution;
3.. in the whipping process high-temperature resisting pigment is dropped into 2. second mixed solution of middle gained of step step by step, obtain the pre-dispersed mill base of coffee color;
4.. with step 3. in the pre-dispersed mill base of coffee color of gained disperse to be not less than 30min with the speed of 2000～2500r/min, obtain the coffee-like mill base of premixed;
5.. with step 4. the coffee-like mill base of premixed of gained grind, when its particle diameter reaches D99≤5.0 μ m, finish to grind, disperse 15min with the speed of 800r/min, obtain initial coffee-like mill base;
6.. after 5. the initial coffee-like mill base of gained carries out quality testing, vacuum defoamation and filters and packages to step, obtain required brown colorant for water Teflon high-temperature cloth.
The method that the grinding of step described in 5. adopted is at least a kind of in ball milling, basket grinding and the horizontal grinding, and abrasive media is zirconium oxide bead or the ceramic bead of 0.8～1.0mm or 1.0～1.2mm.
Each proportioning components of the present invention is suitable; And adopt rational preparation method, make that the coffee-like mill base of water-based Teflon (PTFE) heatproof cloth of preparation has that storage stability is long, temperature tolerance good (temperature tolerance reaches more than 400 ℃), resistant to chemical media, bright-colored, good with PTFE emulsion compatibility, tinctorial strength is high and do not reduce the advantage of the performance of high temperature cloth.This coffee color mill base particle diameter can reach D99≤5.0 μ m (average grain diameter of 99% particle≤5 micron), and its pigment content is high, and tinctorial property is strong, and painted integrated cost is low, has good commercial and is worth; It adopts special pigment wetting dispersing agent and stabilizing agent, makes its dispersiveness in good condition, be difficult for flocculation, but room temperature stores for a long time; Be base-material with the deionized water simultaneously, meet the friendly demand of National Environmental; The preparation process is simple, is easy to suitability for industrialized production.
Claims (7)
1. brown colorant for water Teflon high-temperature cloth is characterized in that: forms by high-temperature resisting pigment, polytetrafluoroethylene (PTFE), functional additive, dispersion moisture agent and deionized water, by the raw material total weight percent:
High-temperature resisting pigment: 35.0%～50.0%;
Polytetrafluoroethylene (PTFE): 10.0%～20.0%;
Functional additive: 5.0%～10.0%;
Dispersion moisture agent: 2.0%～20.0%;
Surplus is a deionized water;
Described high-temperature resisting pigment is at least a kind of in iron oxide black Huang, iron oxide red and the black iron oxide pigment, and its temperature tolerance reaches more than 400 ℃.
2. brown colorant for water Teflon high-temperature cloth according to claim 1 is characterized in that: the maximum operation (service) temperature of described polytetrafluoroethylene (PTFE) is 300 ℃.
3. brown colorant for water Teflon high-temperature cloth according to claim 1 is characterized in that: described functional additive is at least NaOH, KOH, triethanolamine, ethylene glycol, polyethylene glycol, isopropyl alcohol, glycerine, propylene glycol monomethyl ether, EGME, butyl glycol ether, OIT, click conifer antimildew disinfectant, contain a kind of in organosilicon froth breaking polymer, cellulose, bentonite and the macromolecule association thickener.
4. brown colorant for water Teflon high-temperature cloth according to claim 1 is characterized in that: described dispersion moisture agent is at least a kind of in the unsaturated carboxylic acid amine of ammonium polyacrylate salt, polycarboxylate sodium, calgon, tween polyphosphoric acids salt, extraordinary polyester modification polyphosphate compound and many anchoring groups.
5. brown colorant for water Teflon high-temperature cloth according to claim 1 is characterized in that: said dispersion moisture agent is the ion-type copolymer with the pigment anchoring group.
6. the preparation method of brown colorant for water Teflon high-temperature cloth according to claim 1 is characterized in that: carry out as follows:
1.. deionized water, polytetrafluoroethylene (PTFE) are put into the dispersion cylinder stir, add dispersion moisture agent then, disperseed 10 minutes, obtain first mixed solution with 400～600r/min speed;
2.. functional additive is added step mix in first mixed solution of gained in 1., obtain second mixed solution;
3.. in the whipping process high-temperature resisting pigment is dropped into 2. second mixed solution of middle gained of step step by step, obtain the pre-dispersed mill base of coffee color;
4.. with step 3. in the pre-dispersed mill base of coffee color of gained disperse to be not less than 30min with the speed of 2000～2500r/min, obtain the coffee-like mill base of premixed;
5.. with step 4. the coffee-like mill base of premixed of gained grind, when average grain diameter≤5 of its 99% particle micron, finish to grind, disperse 15min with the speed of 800r/min, obtain initial coffee-like mill base;
6.. after 5. the initial coffee-like mill base of gained carries out quality testing, vacuum defoamation and filters and packages to step, obtain required brown colorant for water Teflon high-temperature cloth.
7. the preparation method of brown colorant for water Teflon high-temperature cloth according to claim 6; It is characterized in that: the method that the grinding of step described in 5. adopted is at least a kind of in ball milling, basket grinding and the horizontal grinding, and abrasive media is zirconium oxide bead or the ceramic bead of 0.8～1.0mm or 1.0～1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200810244004A CN101748597B (en) | 2008-12-04 | 2008-12-04 | Brown colorant for water Teflon high-temperature cloth and preparing method thereof |
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| CN200810244004A CN101748597B (en) | 2008-12-04 | 2008-12-04 | Brown colorant for water Teflon high-temperature cloth and preparing method thereof |
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| CN101748597A CN101748597A (en) | 2010-06-23 |
| CN101748597B true CN101748597B (en) | 2012-10-10 |
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Non-Patent Citations (2)
| Title |
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| 丁言和.聚四氟乙烯干法混色工艺浅析.《塑料》.1997,(第3期),21-22. * |
| 李东光.功能性涂料生产与应用.《功能性涂料生产与应用》.江苏科学技术出版社,2006,(第一版),704. * |
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Granted publication date: 20121010 Termination date: 20211204 |