CN103343485A - Filter paper waterproof treating agent, and preparation method and applications thereof - Google Patents
Filter paper waterproof treating agent, and preparation method and applications thereof Download PDFInfo
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- CN103343485A CN103343485A CN2013102314530A CN201310231453A CN103343485A CN 103343485 A CN103343485 A CN 103343485A CN 2013102314530 A CN2013102314530 A CN 2013102314530A CN 201310231453 A CN201310231453 A CN 201310231453A CN 103343485 A CN103343485 A CN 103343485A
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Abstract
A filter paper waterproof treating agent, and a preparation method and applications thereof are disclosed. The treating agent comprises the following components in parts by weight: 40-50 parts of a perfluoroalkylacrylate(with a solid content of 90% or more), 70-80 parts of an aqueous fluorocarbon emulsion (with a solid content of 48%), 45-65 parts of a polytetrafluoroethylene emulsion (with a solid content of 60%), 300-350 parts of water; and wherein the aqueous fluorocarbon emulsion (with a solid content of 48%) is a copolymer of fluoroethylene and hydroxyl vinyl ether, wherein the weight percent concentration of fluorine is 8-11.5%, and the main chain comprises fluorine atoms. The treating agent is economical in components, good in waterproof effect and endurable in functions. The preparation method belongs to a mixing stirring method. The technology is simple and less apparatuses are used. The applications comprise: forming a waterproof membrane on the surface of the filter paper by employing three conventional methods comprising electrostatic spraying, dip-coating and brush coating, with a technology temperature of 110-120 DEG C and a technology time of 10-30 s. The prepared membrane helps the filter paper to have good waterproofness, and to correspondingly prolong service life of the filter.
Description
Technical field
The present invention relates to a kind of finishing agent, more particularly, the present invention relates to a kind of filter paper of filter waterproof finishing agent, simultaneously, the invention still further relates to a kind of preparation method and purposes of described filter paper of filter waterproof finishing agent.
Technical background
Cleaner (air, diesel oil, machine oil) is the important spare part of engine, its effect is particulates (the following particulate that all abbreviates as) such as the dust, mechanical admixture in the filtering air that enters engine, diesel oil, the machine oil, wearing and tearing with the cylinder sleeve that reduces engine, piston ring, crankshaft link rod motion pair, high-pressure oil pump plunger matching parts, optimize the combustion process of engine, reduce the discharging of pollutants such as carbon monoxide, many nitrogen oxides, hydrocarbon.Along with the enforcement of engine emission rules (Europe IV, Europe V), engine has proposed higher supporting requirement to the indexs such as filtering efficiency of cleaner.
At present, domestic cleaner manufacturing enterprise generally from domestic filter paper factory buying filter paper (because of the price of import filter paper higher), after cutting, roll technical process such as ripple, homemade filter paper is directly used in all kinds of cleaners.As everyone knows, the water resistance of homemade filter paper is lower.
In the use of cleaner, the water that enters cleaner produces filter paper and corrodes, cause filter paper make moist distortion, very easily produce ash cake, make the strainability decline of filter paper, the service life of cleaner is shorter; In addition, filter paper makes moist after the distortion, can reduce the water-oil separating efficient of diesel fuel filter or oil filter, makes a certain amount of water enter the oil circuit of engine with oil product, lubricating efficiency and the service life of having reduced engine nozzle, causes the damage of engine.
Therefore, developing a kind of waterproof finishing agent that improves the filter paper of filter water resistance, is the technical problem that needs to be resolved hurrily.
Summary of the invention
Technical problem to be solved by this invention provides a kind of filter paper of filter waterproof finishing agent, its economic formula, and good water-proof effect, function is lasting; A kind of preparation method of this filter paper of filter waterproof finishing agent is provided simultaneously, and this method technology is simple, and use equipment is few; Also provided simultaneously the purposes of this filter paper of filter waterproof finishing agent.
For solving the problems of the technologies described above, the invention provides a kind of filter paper of filter waterproof finishing agent, it comprises following component:
Described water-base fluorocarbon emulsion (solid content is 48%) is the copolymer of PVF and hydroxyl vinyl ethers, and the weight percent concentration of fluorine is 8～11.5%, and the main chain contain fluorine atoms.
The preparation method of this filter paper of filter waterproof finishing agent is:
The perfluoroalkyl acrylate (solid content 〉=90%) that in the water of 300～350 weight portions, adds 40～50 weight portions, fully after the stirring and dissolving, add the water-base fluorocarbon emulsion (solid content is 48%) of 70～80 weight portions and the ptfe emulsion (solid content is 60%) of 45～65 weight portions again, and abundant stirring and dissolving; Described water-base fluorocarbon emulsion (solid content is 48%) is the copolymer of PVF and hydroxyl vinyl ethers, and the weight percent concentration of fluorine is 8～11.5%, and the main chain contain fluorine atoms, can make described filter paper of filter waterproof finishing agent.
The purposes of this filter paper of filter waterproof finishing agent is:
Adopt electrostatic spraying, dip-coating, brush these three kinds of conventional methods at filter paper of filter surface formation one deck waterproof membrane, technological temperature is 110～120 ℃, 10～30 seconds process times.
For the purpose of the concise description problem, below filter paper of filter waterproof finishing agent of the present invention is all abbreviated as this finishing agent.
Perfluoroalkyl acrylate (solid content 〉=90%) is the film forming matter of this finishing agent.It has excellent low-surface-energy characteristic and environment friendly, is widely used at building coating, textile industry and other key areas.The above-mentioned characteristic of perfluoroalkyl acrylate (solid content 〉=90%) has guaranteed the water resistance that it is excellent.
Water-base fluorocarbon emulsion (solid content is 48%) has weatherability, alkali resistance, the acidproof rain of splendid mechanical stability, overlength, can bear bigger shearing force, and be normal temperature cure, can further improve resistance to water, the resistance to soiling of waterproof membrane, prolong the service life of filter paper of filter.
CF2 unit in the polytetrafluoroethylene (PTFE) molecule is pressed zigzag fashion and is arranged, because of the radius of fluorine atom big slightly than the radius of hydrogen, so adjacent CF2 unit can not be pressed trans crossed orientation fully, but forms a spiral helicine distortion chain, fluorine atom has almost covered the surface of whole macromolecular chain.Therefore, ptfe emulsion (solid content is 60%) has higher heat endurance, good weatherability, excellent dielectric properties and resistance to chemical corrosion, and serviceability temperature wide ranges, coefficient of friction be low, do not absorb water, do not glue, do not fire, nontoxic; In addition, ptfe emulsion (solid content is 60%) water-soluble, better dispersed, it can successfully enter in this finishing agent.
Purposes according to described finishing agent, use this finishing agent and adopt electrostatic spraying, dip-coating, brush this three kinds of conventional methods, can form the waterproof membrane (namely filter paper of filter being carried out WATER REPELLENT TREATMENT) of a layered low-surface energy on the filter paper of filter surface, like this, water is refused on the surface of filter paper of filter, anti-soil, filter paper of filter is difficult for by water erosion, not moisture-sensitive distortion, greatly reduce particle and adhere to and stop up the possibility of filter paper of filter filtering micropore, improved the filter effect of filter paper of filter, so that filter paper of filter has excellent waterproofness, the corresponding service life that prolongs cleaner.Therefore, this finishing agent economic formula, good water-proof effect, function is lasting.
As improvement of the present invention, the component of this finishing agent also comprises:
The preparation method of this finishing agent is: comprise that also polyacrylamide with the polyether modified silicon oil of 30～40 weight portions and 65～80 weight portions joins in the mixed solution that the acetone of the isopropyl alcohol of 20～30 weight portions and 20～30 weight portions forms, fully stir, ultrasonic dispersion 10 minutes is to form suspension again, suspension is joined in the described filter paper of filter waterproof finishing agent that makes, stir.
The purposes of this finishing agent is: adopt electrostatic spraying, dip-coating, brush these three kinds of conventional methods at filter paper of filter surface formation one deck waterproof membrane, technological temperature is 110～120 ℃, 10～30 seconds process times.
Polyether modified silicon oil is a kind of organosilicon non-ionic surface active agent of unique properties, can arbitrary proportion and water dissolve each other.Acting as of polyether modified silicon oil:
(1) can reduce internal friction, the stress of molecular radical in this finishing agent, thereby play levelling, froth breaking, guarantee that this finishing agent is evenly at the surface filming of filter paper of filter;
(2) have lower surface tension, can further reduce the surface energy of filter paper of filter, play waterproof effect better;
(3) have good lubricity, can reduce MEDIA FLOW through the resistance of filter paper of filter, the original resistance of filter paper of filter is descended to some extent;
(4) have breakdown of emulsion preferably, be applicable to water-oil separating, can strengthen the oil-water separation of filter paper of filter.
Polyacrylamide is high molecular weight water soluble polymer, is insoluble to most organic solvent, and polyacrylamide has good flocculability, can reduce the frictional resistance between the liquid, is important displacement of reservoir oil polymer.On the one hand, polyacrylamide can reduce MEDIA FLOW through the resistance of filter paper of filter, and the original resistance of filter paper of filter is descended to some extent; On the other hand, in the use of filter paper of filter, polyacrylamide can enter into the fluid that filter paper of filter filters, and improves the velocity ratio of profit, further strengthens the separating effect of profit.
Isopropyl alcohol and acetone are the conditioning agent of control film forming speed speed in this finishing agent.
Add in this finishing agent based on the above-mentioned functions additive, further improved the waterproof effect of this finishing agent again.
In sum, this finishing agent economic formula, good water-proof effect, function is lasting.This finishing agent gets final product film forming at 110～120 ℃, and is preferable with the adhesive force of filter paper of filter, effectively improves the water resistance of filter paper of filter, like this, the strainability of sustainable performance cleaner prolongs service life of cleaner, plays significant castering action for the product quality of cleaner.The preparation method of this finishing agent, its technology is simple, and use equipment is few.This finishing agent of many uses, adaptability is strong, and industrialization is simple for use, do not have obstacle, is convenient to promote and implement.
This finishing agent is easy to storage, only need be kept at more than 5 ℃, avoid daylight shady and cool dry the locating of directly shining, ventilates to get final product.This
The part physicochemical properties of finishing agent are:
Perfluoroalkyl acrylate in this finishing agent (solid content 〉=90%), water-base fluorocarbon emulsion (solid content is 48%), ptfe emulsion (solid content is 60%), polyether modified silicon oil, polyacrylamide, isopropyl alcohol, acetone are commercially available product, and specifying information is as follows:
The specific embodiment
Below can further be well understood to the present invention by embodiment given below.But they are not limitation of the invention.
Embodiment 1
The preparation method of this finishing agent comprises following two processing steps:
1) in the water of 300 grams, adds 40 perfluoroalkyl acrylates (solid content 90%) that restrain, fully after the stirring and dissolving (continuous stirring 3min), add the water-base fluorocarbon emulsion (solid content is 48%) of 70 grams and the ptfe emulsion (solid content is 60%) of 45 grams again, and abundant stirring and dissolving (continuous stirring 3min); Described water-base fluorocarbon emulsion (solid content is 48%) is the copolymer of PVF and hydroxyl vinyl ethers, and the weight percent concentration of fluorine is 8%, and the main chain contain fluorine atoms, can make described finishing agent;
2) polyacrylamides of the polyether modified silicon oils of 30 grams and 65 grams are joined in the mixed solution formed of acetone of the isopropyl alcohols of 20 grams and 20 grams, fully stir (continuous stirring 3min), ultrasonic dispersion 10 minutes is to form suspension again, suspension is joined in this finishing agent that makes, stir (continuous stirring 3min).
With this finishing agent that said method makes, be easy to storage, only need be kept at more than 5 ℃, avoid daylight shady and cool dry the locating of directly shining, ventilates to get final product, sealed storage was never degenerated in 1 year.
Adopt this conventional method of electrostatic spraying to form one deck waterproof membrane on the filter paper of filter surface, technological temperature is 110 ℃, 30 seconds process times.
Embodiment 2
The preparation method of this finishing agent comprises following two processing steps:
1) in the water of 325 grams, adds 45 perfluoroalkyl acrylates (solid content 90%) that restrain, fully after the stirring and dissolving (continuous stirring 3min), add the water-base fluorocarbon emulsion (solid content is 48%) of 75 grams and the ptfe emulsion (solid content is 60%) of 50 grams again, and abundant stirring and dissolving (continuous stirring 3min); Described water-base fluorocarbon emulsion (solid content is 48%) is the copolymer of PVF and hydroxyl vinyl ethers, and the weight percent concentration of fluorine is 10%, and the main chain contain fluorine atoms, can make described finishing agent;
2) polyacrylamides of the polyether modified silicon oils of 35 grams and 70 grams are joined in the mixed solution formed of acetone of the isopropyl alcohols of 25 grams and 25 grams, fully stir (continuous stirring 3min), ultrasonic dispersion 10 minutes is to form suspension again, suspension is joined in this finishing agent that makes, stir (continuous stirring 3min).
With this finishing agent that said method makes, be easy to storage, only need be kept at more than 5 ℃, avoid daylight shady and cool dry the locating of directly shining, ventilates to get final product, sealed storage was never degenerated in 1 year.
Adopt this conventional method of dip-coating to form one deck waterproof membrane on the filter paper of filter surface, technological temperature is 115 ℃, 20 seconds process times.
Embodiment 3
The preparation method of this finishing agent comprises following two processing steps:
1) in the water of 350 grams, adds 50 perfluoroalkyl acrylates (solid content 90%) that restrain, fully after the stirring and dissolving (continuous stirring 3min), add the water-base fluorocarbon emulsion (solid content is 48%) of 80 grams and the ptfe emulsion (solid content is 60%) of 65 grams again, and abundant stirring and dissolving (continuous stirring 3min); Described water-base fluorocarbon emulsion (solid content is 48%) is the copolymer of PVF and hydroxyl vinyl ethers, and the weight percent concentration of fluorine is 11.5%, and the main chain contain fluorine atoms, can make described finishing agent;
2) polyacrylamides of the polyether modified silicon oils of 40 grams and 80 grams are joined in the mixed solution formed of acetone of the isopropyl alcohols of 30 grams and 30 grams, fully stir (continuous stirring 3min), ultrasonic dispersion 10 minutes is to form suspension again, suspension is joined in this finishing agent that makes, stir (continuous stirring 3min).
With this finishing agent that said method makes, be easy to storage, only need be kept at more than 5 ℃, avoid daylight shady and cool dry the locating of directly shining, ventilates to get final product, sealed storage was never degenerated in 1 year.
Adopt and brush this conventional method at filter paper of filter surface formation one deck waterproof membrane, technological temperature is 120 ℃, 10 seconds process times.
In order to test the performance of this finishing agent, prepare with homemade filter paper of filter and to be numbered 1～6 experimental sample.After this finishing agent is handled described filter paper of filter, adopt phoenix-300plus Mobyneb contact angle analyzer that contact angle is measured, the results are shown in Table 1.
Table 1
| The experimental sample numbering | 1 | 2 | 3 | 4 | 5 | 6 |
| Contact angle (°) | 120 | 118 | 120 | 115 | 121 | 116 |
As can be seen from Table 1, the WATER REPELLENCY fine (usually, contact angle can be refused water greater than 105 °) on the experimental sample surface after this finishing agent is handled can prevent effectively that sealing and dirt accumulate.
Below again in conjunction with three kinds of filter paper of filter in the forward and backward physical index testing result of WATER REPELLENT TREATMENT (i.e. table 2), the reason that its strainability and service life are improved after the filter paper of filter WATER REPELLENT TREATMENT is analyzed.
Need to prove that the air paper described in the table 2, oil filter paper, diesel oil filter paper are respectively the abbreviation of filter paper of air cleaner, oil filter filter paper, diesel fuel filter filter paper.
Table 2
By table 2 as seen, filter paper of filter quantitatively, thickness and three indexs of air permeability do not have significant change; Its maximum diameter of hole index obviously reduces; Its bursting strength and deflection binomial index obviously improve.
Filter paper of filter after this finishing agent is handled, its bursting strength and deflection improve, so that intensity and the service life of having improved filter paper of filter, reduced the possibility of being made moist and being fitted between the torsional deformation of the filter core that causes and the adjacent eighty percent discount filter paper by filter paper of filter, this can increase appearance dirt area and the dust containing capacity of filter core; Because the waterproof membrane surface that this finishing agent forms on the filter paper of filter surface can be low, and frictional force is little, the resistance of medium by filter paper of filter is reduced simultaneously, although thereby the maximum diameter of hole reduce, big variation does not take place in air permeability.
For verifying the service life that helps to improve cleaner through the filter paper of filter after the processing of this finishing agent, the filter paper of filter that WATER REPELLENT TREATMENT is forward and backward is used in air filter, oil filter, the diesel fuel filter respectively, and carry out the test stand performance contrast test, result of the test sees Table 3 (refer to before the processing in the table 3 that the filter paper of filter before the WATER REPELLENT TREATMENT is used in the corresponding cleaner, refer to after the processing in the table 3 that the filter paper of filter after this finishing agent is handled is used in the corresponding cleaner).
Table 3
By table 3 as seen, adopt the filter paper of filter after this finishing agent is handled in three kinds of cleaners, under the constant substantially situation of original resistance, the laboratory of three kinds of cleaners is significantly improved in the life-span.Therefore, also can be significantly improved the service life under three kinds of actual use states of cleaner.
In order to verify this finishing agent to the influence of the oil-water separation of filter paper of filter, the aqueous portion of the moisture oil product after filtering through filter paper of filter is tested test result such as table 4.The result shows that the aqueous phase oil content that the filter paper of filter of handling through this finishing agent filters descends to some extent, and this finishing agent has certain humidification to the oil-water separation of filter paper of filter.
Table 4
Embodiment 4
The perfluoroalkyl acrylate (solid content 90%) that in the water of 300 grams, adds 40 grams, fully after the stirring and dissolving (continuous stirring 3min), add the water-base fluorocarbon emulsion (solid content is 48%) of 70 grams and the ptfe emulsion (solid content is 60%) of 45 grams again, and abundant stirring and dissolving (continuous stirring 3min); Described water-base fluorocarbon emulsion (solid content is 48%) is the copolymer of PVF and hydroxyl vinyl ethers, and the weight percent concentration of fluorine is 8%, and the main chain contain fluorine atoms, can make described finishing agent.
With this finishing agent that said method makes, be easy to storage, only need be kept at more than 5 ℃, avoid daylight shady and cool dry the locating of directly shining, ventilates to get final product, sealed storage was never degenerated in 1 year.
Adopt this conventional method of electrostatic spraying to form one deck waterproof membrane on the filter paper of filter surface, technological temperature is 110 ℃, 30 seconds process times.
Embodiment 5
The perfluoroalkyl acrylate (solid content 90%) that in the water of 325 grams, adds 45 grams, fully after the stirring and dissolving (continuous stirring 3min), add the water-base fluorocarbon emulsion (solid content is 48%) of 75 grams and the ptfe emulsion (solid content is 60%) of 50 grams again, and abundant stirring and dissolving (continuous stirring 3min); Described water-base fluorocarbon emulsion (solid content is 48%) is the copolymer of PVF and hydroxyl vinyl ethers, and the weight percent concentration of fluorine is 10%, and the main chain contain fluorine atoms, can make described finishing agent.
With this finishing agent that said method makes, be easy to storage, only need be kept at more than 5 ℃, avoid daylight shady and cool dry the locating of directly shining, ventilates to get final product, sealed storage was never degenerated in 1 year.
Adopt this conventional method of dip-coating to form one deck waterproof membrane on the filter paper of filter surface, technological temperature is 115 ℃, 20 seconds process times.
Embodiment 6
The perfluoroalkyl acrylate (solid content 90%) that in the water of 325 grams, adds 45 grams, fully after the stirring and dissolving (continuous stirring 3min), add the water-base fluorocarbon emulsion (solid content is 48%) of 75 grams and the ptfe emulsion (solid content is 60%) of 50 grams again, and abundant stirring and dissolving (continuous stirring 3min); Described water-base fluorocarbon emulsion (solid content is 48%) is the copolymer of PVF and hydroxyl vinyl ethers, and the weight percent concentration of fluorine is 10%, and the main chain contain fluorine atoms, can make described finishing agent.
With this finishing agent that said method makes, be easy to storage, only need be kept at more than 5 ℃, avoid daylight shady and cool dry the locating of directly shining, ventilates to get final product, sealed storage was never degenerated in 1 year.
Adopt and brush this conventional method at filter paper of filter surface formation one deck waterproof membrane, technological temperature is 120 ℃, 10 seconds process times.
Claims (5)
1. filter paper of filter waterproof finishing agent, it is characterized in that: it comprises following component:
Described water-base fluorocarbon emulsion (solid content is 48%) is the copolymer of PVF and hydroxyl vinyl ethers, and the weight percent concentration of fluorine is 8～11.5%, and the main chain contain fluorine atoms.
2. filter paper of filter waterproof finishing agent according to claim 1, it is characterized in that: its component also comprises:
3. the preparation method of the described filter paper of filter waterproof finishing agent of claim 1, it is characterized in that: the perfluoroalkyl acrylate (solid content 〉=90%) that in the water of 300～350 weight portions, adds 40～50 weight portions, fully after the stirring and dissolving, add the water-base fluorocarbon emulsion (solid content is 48%) of 70～80 weight portions and the ptfe emulsion (solid content is 60%) of 45～65 weight portions again, and abundant stirring and dissolving; Described water-base fluorocarbon emulsion (solid content is 48%) is the copolymer of PVF and hydroxyl vinyl ethers, and the weight percent concentration of fluorine is 8～11.5%, and the main chain contain fluorine atoms, can make described filter paper of filter waterproof finishing agent.
4. the preparation method of filter paper of filter waterproof finishing agent according to claim 3, it is characterized in that: comprise that also polyacrylamide with the polyether modified silicon oil of 30～40 weight portions and 65～80 weight portions joins in the mixed solution that the acetone of the isopropyl alcohol of 20～30 weight portions and 20～30 weight portions forms, fully stir, ultrasonic dispersion 10 minutes is to form suspension again, suspension is joined in the described filter paper of filter waterproof finishing agent that makes, stir.
5. the purposes of claim 1 or 2 described filter paper of filter waterproof finishing agents, it is characterized in that: adopt electrostatic spraying, dip-coating, brush these three kinds of conventional methods at filter paper of filter surface formation one deck waterproof membrane, technological temperature is 110～120 ℃, 10～30 seconds process times.
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| CN105401364A (en) * | 2015-11-30 | 2016-03-16 | 安徽省元琛环保科技有限公司 | Nanometer fiber surface layer filtering material after-treatment technology and equipment |
| CN106833166A (en) * | 2017-03-21 | 2017-06-13 | 深圳市阿拉町科技发展有限公司 | A kind of waterproof fluorination liquid and its preparation method and application |
| CN107237206A (en) * | 2017-07-25 | 2017-10-10 | 沧州洁帝欧滤清器有限公司 | A kind of oleophobic air paper and preparation method thereof |
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| CN1613883A (en) * | 2004-09-17 | 2005-05-11 | 浙江大学 | Preparation of water dispersed fine emulsion of fluorine acrelate copolymer for anti-oil and anti-water agent |
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Address after: No.36, Longting Middle Road, Fanyang Town, Fanchang District, Wuhu City, Anhui Province 241000 Patentee after: Zou Yizhe Address before: 233000 No. 5, unit 4, building 2, 7 Sports Road, mussel District, Bengbu, Anhui Patentee before: Zou Yizhe |
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Effective date of registration: 20201208 Address after: 226600 eight groups of Mao Zhuang village, Tun tou Town, Haian, Nantong, Jiangsu Patentee after: JIANGSU HUAYANG NYLON Co.,Ltd. Address before: No.36, Longting Middle Road, Fanyang Town, Fanchang District, Wuhu City, Anhui Province 241000 Patentee before: Zou Yizhe |