CN1831243A

CN1831243A - Modified liquid for filter paper of filter and its preparation method and use

Info

Publication number: CN1831243A
Application number: CN 200610043589
Authority: CN
Inventors: 邹宜哲; 方雯
Original assignee: 蚌埠市昊业滤清器有限公司
Priority date: 2006-04-14
Filing date: 2006-04-14
Publication date: 2006-09-13
Also published as: CN100415990C

Abstract

The invention relates to a filter paper modified liquid for a filter and the preparing method and use thereof, comprising phenylpropyl latex or organic silicone acrylic acid 4-20 weight shares, melamine 1-4 weight shares, and solvent 24-78.9 weight shares, where the solvent is any one of the water, deionized water, alcohol and isopropanol; also comprising Teflon latex 15-35 weight shares; further able to comprise micrometer or nanometer titanium dioxide particles 1-10 weight shares, and NP-13 0.1-2 weight shares; and able to the filtering performance and service life of the filter paper of the filter. And the making method is the traditional mixing method. and the use: adopting traditional methods spraying and dipping to form a film layer on each side of the filter paper, then keeping temperature at 110-130DEG C for 1.5-2min, thus able to obtain two layers of modified films on the filter paper, which can help improve filtering efficiency and service life of the filter.

Description

Modified liquid for filter paper of filter and preparation method thereof and purposes

Technical field

The present invention relates to a kind of modification liquid, more particularly, the present invention relates to a kind of modified liquid for filter paper of filter, simultaneously, the invention still further relates to a kind of preparation method and purposes of described modified liquid for filter paper of filter.

Technical background

Cleaner (comprising air filter, diesel fuel filter, oil filter) is the important spare part of engine, it act as particulates (the following particulate that all abbreviates as) such as dust in air that filtering enters engine, diesel oil, the machine oil and mechanical admixture, to reduce the wearing and tearing of cylinder sleeve of engine piston ring, crankshaft link rod motion pair and 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 II, Europe III), engine has proposed higher supporting requirement to the indexs such as filtering efficiency of cleaner.

Usually, the fibrage of filter paper of filter mainly contains the filtering type capture principle of particulate:

(1), the inertia effect (claiming collision effect again).When the particulate in sneaking into fluid advanced in fibrolaminar tortuous passageway, because action of inertia directly advances forward, collision was on fiber and be captured.

(2), sieving effect.Greater than the particulate of hole between fiber, can not be intercepted at the filter paper surface by fibrage.

At present, cleaner manufacturing enterprise generally adopts the buying filter paper from domestic filter paper factory, directly is used in all kinds of cleaners after cutting, roll technical process such as ripple.

Because in the manufacture process of filter paper, the lack of alignment of filter paper fibre has caused that to occur some apertures between filter paper fibre bigger, irregular hole, make the particulate of greater particle size be easy to by, domestic in addition filter paper producer is at the manufacturing equipment of filter paper, production technology, aspect such as arrangement curing materials etc. is compared with external filter paper producer all significantly gap, therefore, the strainability of homemade filter paper is lower, service life is shorter, the quality of each batch filter paper is stable inadequately, and filter paper has more tangible local clouding problems such as (being local thick book inequality), this has restricted the raising of cleaner filtering efficient to a great extent, so that have influence on the lifting of engine performance, do not satisfy the supporting requirement that engine improves day by day.

In addition, understand according to the applicant, domestic does not still have at present can carry out the modification processing to filter paper, to improve the product in its strainability and service life.

Summary of the invention

At the deficiencies in the prior art, the object of the present invention is to provide a kind of modified liquid for filter paper of filter that improves filter paper of filter strainability and service life, its economic formula, function is lasting; A kind of preparation method of this modified liquid for filter paper of filter is provided simultaneously, and this method technology is simple, and use equipment is few; Also provided simultaneously the purposes of this modified liquid for filter paper of filter, promptly adopt spraying, flood these two kinds of conventional methods and on the obverse and reverse of filter paper of filter, respectively form a skim, at 110～130 ℃ of constant temperature 1.5～2min, can on filter paper of filter, obtain two-layer modified membrane then.

The invention provides a kind of modified liquid for filter paper of filter, it comprises following component:

Benzene emulsion or organosilicon-acrylic resin emulsion 4～20 weight portions

Melamine 1～4 weight portion

Solvent 24～78.9 weight portions.

Described solvent is any one in water, deionized water, ethanol, the isopropyl alcohol.

The preparation method of this modified liquid for filter paper of filter is: after the solvent that adds 24～78.9 weight portions in the benzene emulsion of 4～20 weight portions or organosilicon-acrylic resin emulsion dilutes, the melamine that adds 1～4 weight portion, and stir, solvent is any one in water, deionized water, ethanol, the isopropyl alcohol, can make described modified liquid for filter paper of filter.

The purposes of this modified liquid for filter paper of filter is: adopt spraying, flood these two kinds of conventional methods respectively form a skim on the obverse and reverse of filter paper of filter, then at 110～130 ℃ of constant temperature 1.5～2min, can obtain two-layer modified membrane on filter paper of filter.

Benzene emulsion is the emulsion that is made through emulsion polymerisation by styrene and acrylate, and the acrylate in the benzene emulsion is good to the caking property of multiple material, filming performance is excellent, and emulsion particle is also less, can combine with fiber surface well; Organosilicon-acrylic resin emulsion is the transparence resin emulsion by acrylate monomer and the graft copolymerization of organosilicon functional group, have good guarantor's light, protect physics, mechanical performances such as look, mildew-resistant and weatherability, can form the resistance to water paint film at fiber surface, make fiber possess certain anti-water function and anti-pollution function; Melamine is the white powder crystallization, is film forming accelerating.

Purposes according to described modified liquid for filter paper of filter, after using this modified liquid for filter paper of filter that filter paper of filter is carried out the modification processing, can on filter paper, obtain two-layer modified membrane uniformly, this two-layer modified membrane can be brought into play following positive role: the one, increase the stroke of particulate in filter paper, thereby increased the probability of particle collision filter paper fibre, play the effect of multistage filtering, strengthened the inertia effect; The 2nd, remedied the bigger defective in part hole aperture between filter paper fibre, improved the uniformity in hole aperture between filter paper fibre, thereby made bigger particulate can not enter in the filter paper fibre and be intercepted at the filter paper surface, strengthened the sieving effect.

The positive role that above-mentioned two-layer modified membrane is brought into play makes the physical index (air permeability, maximum diameter of hole, bursting strength, deflection etc.) and the anti-water function of filter paper of filter be improved, and like this, has just improved the strainability and the service life of filter paper of filter.

As improvement of the present invention, the component of described modified liquid for filter paper of filter also comprises: ptfe emulsion 15～35 weight portions.

The preparation method of this modified liquid for filter paper of filter is: also be included in the described modified liquid for filter paper of filter that makes and add the ptfe emulsion of 15～35 weight portions, and stir.

Ptfe emulsion has higher heat endurance, good weatherability, excellent dielectric properties and resistance to chemical corrosion, and serviceability temperature wide ranges, coefficient of friction low, do not absorb water, do not glue, do not fire, nontoxic.

According to the purposes of described modified liquid for filter paper of filter, use this modified liquid for filter paper of filter contain ptfe emulsion that filter paper of filter is carried out modification and handles after, can on filter paper, obtain two-layer modified membrane uniformly.Based on the non-absorbency energy that ptfe emulsion had, make the anti-water function of filter paper of filter further improve, effectively reduce the surface energy of filter paper, like this, be able to further raising the service life of filter paper of filter.

As a further improvement on the present invention, the component of described modified liquid for filter paper of filter also comprises:

Micron order or Nano titanium dioxide particle 1～10 weight portion

Polyoxyethylene nonylphenol ether-13 0.1～2 weight portion.

The preparation method of this modified liquid for filter paper of filter is: also be included in the polyoxyethylene nonylphenol ether-13 of the micron order that adds 1～10 weight portion in the described modified liquid for filter paper of filter that makes or Nano titanium dioxide particle, 0.1～2 weight portion, and stir.

Micron order or Nano titanium dioxide particle are a kind of loaded photocatalyst with higher catalytic activity, and be nontoxic, has stable chemical properties such as photocatalytic activity, and effectively degradable organic pollutant has bactericidal action; Polyoxyethylene nonylphenol ether-13, its commodity are called NP-13, are a kind of ionic surfactants, and the stable of solution and dispersion of nano-particles are had facilitation.

Purposes according to described modified liquid for filter paper of filter, this modified liquid for filter paper of filter that use contains micron order or Nano titanium dioxide particle, polyoxyethylene nonylphenol ether-13 can obtain two-layer modified membrane uniformly after filter paper of filter is carried out modification and handles on filter paper.Titanium dioxide granule by modified membrane attached on the filter paper of filter, like this, utilize can relatively easily the degrade organic pollution on filter paper surface of the photocatalytic activity of titanium dioxide granule, make the organic pollution on filter paper surface obviously reduce, like this, filter paper of filter just has stronger sterilization, deodorization, antifouling and self-cleaning function, and the strainability of filter paper of filter is able to further raising; The facilitation that is dispersed with of the stable and titanium dioxide granule of polyoxyethylene nonylphenol ether-13 pair this modified liquid for filter paper of filter.

In sum, the economic formula of this modified liquid for filter paper of filter, function is lasting; The preparation method of this modified liquid for filter paper of filter, its technology is simple, and use equipment is few; Direct purposes of this modified liquid for filter paper of filter (filter paper of filter is carried out modification to be handled) and indirect purposes (other filtering material such as nonwoven fabric, glass fibre etc. are carried out the modification processing) are extensively, adaptability is strong, industrialization is used does not have obstacle, started at home to filter paper of filter carry out modification handle, improving the beginning in its strainability and service life, can play significant castering action for the product quality of cleaner.

Benzene emulsion in this modified liquid for filter paper of filter, organosilicon-acrylic resin emulsion, melamine, water, deionized water, ethanol, isopropyl alcohol, ptfe emulsion, micron order or Nano titanium dioxide particle, polyoxyethylene nonylphenol ether-13 are commercially available product.

Description of drawings

Fig. 1 is that a filter paper surface microscopic topographic through intercepting at random is being amplified to scanning electron microscopy analysis photo after 150 times in a collection of outsourcing filter paper of filter;

Fig. 2 uses the embodiment of the invention 1, embodiment 2, embodiment 3 described modified liquid for filter paper of filter also to adopt this conventional method of dipping that same batch of outsourcing filter paper of filter described in Fig. 1 carried out the fundamental diagram that modification is handled respectively, wherein: 1, put filter paper roller 2, impregnating bath 3,4,5, guiding wheels 6, Aisle type baking oven 7, receipts filter paper roller;

Fig. 3 is to use the embodiment of the invention 1 described modified liquid for filter paper of filter and adopts the operation principle of Fig. 2 and behind the filter paper of filter that obtains handling through modification, is being amplified to scanning electron microscopy analysis photo after 150 times through a filter paper surface microscopic topographic of intercepting at random from this filter paper;

Fig. 4 is that the part of that filter paper surface microscopic topographic described in Fig. 3 is at the scanning electron microscopy analysis photo that is amplified to after 1000 times.

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:

After the water of adding 78.9 grams dilute in the benzene emulsion of 20 grams, the melamine that adds 4 grams, and stir (continuous stirring 3min), then, add the ptfe emulsion of 35 grams, and stir (continuous stirring 3min), at last, add the titanium dioxide granule of 10 gram 10nm, the polyoxyethylene nonylphenol ether-13 of 2 grams, and stir (continuous stirring 3min), modified liquid for filter paper of filter of the present invention can be obtained.

With the modified liquid for filter paper of filter that said method makes, sealed storage was never degenerated in 1 year, and dynamic viscosity is convenient to adopt spraying, is flooded these two kinds of conventional methods and filter paper of filter is carried out modification handle about 260mPas.

Embodiment 2:

After the ethanol of adding 51 grams dilute in the benzene emulsion of 12 grams, the melamine that adds 2 grams, and stir (continuous stirring 3min), then, add the ptfe emulsion of 25 grams, and stir (continuous stirring 3min), at last, add the titanium dioxide granule of 5 gram 18nm, the polyoxyethylene nonylphenol ether-13 of 1 gram, and stir (continuous stirring 3min), modified liquid for filter paper of filter of the present invention can be obtained.

With the modified liquid for filter paper of filter that said method makes, sealed storage was never degenerated in 1 year, and dynamic viscosity is convenient to adopt spraying, is flooded these two kinds of conventional methods and filter paper of filter is carried out modification handle about 280mPas.

Embodiment 3:

After the isopropyl alcohols of adding 24 grams dilute in the organosilicon-acrylic resin emulsion of 4 grams, the melamine that adds 1 gram, and stir (continuous stirring 3min), then, add the ptfe emulsion of 15 grams, and stir (continuous stirring 3min), at last, add the titanium dioxide granule of 1 gram, 1 μ m, the polyoxyethylene nonylphenol ether-13 of 0.1 gram, and stir (continuous stirring 3min), modified liquid for filter paper of filter of the present invention can be obtained.

With the modified liquid for filter paper of filter that said method makes, sealed storage was never degenerated in 1 year, and dynamic viscosity is convenient to adopt spraying, is flooded these two kinds of conventional methods and filter paper of filter is carried out modification handle about 300mPas.

Embodiment 4:

After the water of adding 78.9 grams dilute in the benzene emulsion of 20 grams, add the melamines of 4 grams, and stir (continuous stirring 3min), modified liquid for filter paper of filter of the present invention can be obtained.

Embodiment 5:

After the ethanol of adding 51 grams dilute in the organosilicon-acrylic resin emulsion of 12 grams, add the melamines of 2 grams, and stir (continuous stirring 3min), modified liquid for filter paper of filter of the present invention can be obtained.

Embodiment 6:

After the isopropyl alcohols of adding 24 grams dilute in the benzene emulsion of 4 grams, add the melamine of 1 gram, and stir (continuous stirring 3min), modified liquid for filter paper of filter of the present invention can be obtained.

Embodiment 7:

After the deionized waters of adding 51 grams dilute in the organosilicon-acrylic resin emulsion of 12 grams, the melamine that adds 2 grams, and stir (continuous stirring 3min), then, the ptfe emulsion that adds 25 grams, and stir (continuous stirring 3min), can obtain modified liquid for filter paper of filter of the present invention.

Embodiment 8:

Referring to Fig. 1, Fig. 1 is that a filter paper surface microscopic topographic through intercepting at random is being amplified to scanning electron microscopy analysis photo after 150 times in a collection of outsourcing filter paper of filter, this filter paper non-modified shown in this photo is handled, exist the bigger hole in a plurality of apertures between filter paper fibre, make the particulate of greater particle size be easy to enter in the filter paper fibre, like this, reduced the strainability of filter paper, prolongation along with filtration time, described hole can be stopped up by the particulate of greater particle size, and then has reduced the service life of filter paper.

Present embodiment adopts same batch of outsourcing filter paper of filter described in Fig. 1.

Referring to Fig. 2, put filter paper roller 1, impregnating bath 2, guiding wheels 3, guiding wheels 4, guiding wheels 5, Aisle type baking oven 6, receive filter paper roller 7 equal buyables.

Need to prove, except that guiding wheels 3, guiding wheels 4, guiding wheels 5, in impregnating bath 2, Aisle type baking oven 6 also has a plurality of guiding wheels to the section of receiving filter paper roller 7, in addition, put and also be provided with corresponding one group of motor (for the purpose of energy concise description problem, described a plurality of guiding wheels and corresponding one group of motor are all not shown in Fig. 2) on filter paper roller 1, receipts filter paper roller 7, guiding wheels 3, guiding wheels 4, guiding wheels 5 and the described a plurality of guiding wheels.Like this, filter paper is accompanied by the rotation of directive wheel and travels forward synchronously between all guiding wheels.

Referring to Fig. 2, in impregnating bath 2, add the embodiment of the invention 1 described modified liquid for filter paper of filter, liquid level is being as the criterion guiding wheels 3 and 4 submergences of guiding wheels, same batch of outsourcing filter paper of filter described in Fig. 1 be provided at put on the filter paper roller 1, under the driving of motor, filter paper floods in impregnating bath 2 through guiding wheels 3, guiding wheels 4, enter in the Aisle type baking oven 6 through guiding wheels 5 again, after the filter paper that is impregnated with modified liquid for filter paper of filter is dried in Aisle type baking oven 6, by 7 rollings of receipts filter paper roller, thereby the modification that finishes filter paper is handled.

Aisle type baking oven 6 adopts the far infrared drying mode.The distance that impregnating bath 2 interior guiding wheels 3 and guiding wheels are 4, the length of Aisle type baking oven 6 are determined by the drive wire speed of filter paper.Consider and require in the filter paper of filter motion process to keep smooth, must not the damaged fiber structure, do not occur tearing and situation such as distortion, the movement velocity of determining filter paper is 0.2～0.3m/s, the distance that guiding wheels 3 and guiding wheels are 4 is 6.25 meters, the length of impregnating bath 2 is 8 meters, the time of staying of filter paper in impregnating bath 2 is 23～30 seconds, and the length of Aisle type baking oven 6 is 26 meters.

The time of staying of filter paper in impregnating bath 2 is 23 seconds in the present embodiment, to guarantee that filter paper impregnation fully (promptly adopts this conventional method of dipping respectively to form a skim on the obverse and reverse of filter paper of filter), temperature constant in the Aisle type baking oven 6 is 130 ℃, the drying time of filter paper in Aisle type baking oven 6 is 1.5min, to guarantee the filter paper oven dry fully, so just can on filter paper of filter, obtain two-layer modified membrane.

After this traditional dipping method of employing present embodiment carried out the modification processing to filter paper of filter, filter paper had higher physical index and water repelling property, thereby has improved the strainability and the service life of filter paper; Utilize can relatively easily the degrade organic pollution on filter paper surface of the photocatalytic activity of titanium dioxide granule simultaneously, make the organic pollution on filter paper surface obviously reduce, like this, filter paper also has stronger sterilization, deodorization, antifouling and self-cleaning function.

Below in conjunction with the scanning electron microscopy analysis photo of filter paper of filter surface microscopic topographic, the filter paper modification is handled its strainability of back and the reason that is improved service life is analyzed:

Referring to Fig. 3, from photo as can be seen, this filter paper surface has formed modified membrane uniformly, again referring to Fig. 4, from photo, can more be clear that, there are a plurality of apertures less in the surface microscopic topographic of this filter paper, be the three-dimensional hole that distributes, therefore, be filter paper in having formed after the filter paper modification is handled, outer is the three-decker of two-layer modified membrane, and variation has taken place in its surperficial microscopic appearance, the bigger hole in the part aperture film that is modified hides between the fiber of filter paper and fiber, has remedied the bigger defective in part hole aperture between filter paper fibre, has improved the uniformity in hole aperture between filter paper fibre, be intercepted at the filter paper surface like this with regard to making bigger particulate can not enter in the filter paper fibre, can guarantee that described hole is not blocked, like this, just improve the strainability and the service life of filter paper of filter.

Handle forward and backward physical index testing results (seeing Table I) in conjunction with three kinds of filter paper of filter modifications more below, the filter paper modification handled its strainability of back and the reason that is improved service life is done further to analyze:

Table I

		Quantitative g/m ²	Thickness mm	Air permeability Δ P=13mmH ₂O ??L/M ².S	Maximum diameter of hole μ m	Bursting strength KPa	Deflection mN.m
		Quantitative g/m ²	Thickness mm	Air permeability Δ P=13mmH ₂O ??L/M ².S	Maximum diameter of hole μ m	Bursting strength KPa	Deflection mN.m	Air paper	Before the modification	? ??133	? ??0.58	? ??200	? ??88.5	? ??275	? ??5.2
After the modification	? ??134.5	? ??0.59	? ??192	? ??68	? ??700	? ??7.0			Before the modification	? ??133	? ??0.58	? ??200	? ??88.5	? ??275	? ??5.2
After the modification	? ??134.5	? ??0.59	? ??192	? ??68	? ??700	? ??7.0	Oil filter paper		Before the modification	??135	? ??0.45	? ??360	? ??95	? ??340	? ??4.8
After the modification	? ??136	? ??0.46	? ??355	? ??72	? ??720	? ??6.7			Before the modification	??135	? ??0.45	? ??360	? ??95	? ??340	? ??4.8
After the modification	? ??136	? ??0.46	? ??355	? ??72	? ??720	? ??6.7		Diesel oil filter paper	Before the modification	? ??150	? ??0.4	? ??110	? ??65	? ??280	? ??4.5
After the modification	? ??151.5	? ??0.41	? ??107	? ??52	? ??680	? ??6.4			Before the modification	? ??150	? ??0.4	? ??110	? ??65	? ??280	? ??4.5

Need to prove that the air paper described in the Table I, 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.

By Table I as seen, every kind of filter paper of filter quantitatively, thickness and air permeability index do not have significant change, the maximum diameter of hole index obviously reduces, bursting strength and deflection index obviously improve.

Every kind of filter paper of filter after modification is handled, its bursting strength and deflection index improve, the intensity and the service life of filter paper have been improved, reduced the possibility of fitting by between the torsional deformation of the filter core of filter paper manufacturing and the adjacent eighty percent discount filter paper, so that increased the appearance dirt area and the dust containing capacity of filter core, this can make be improved the service life of corresponding cleaner; Every kind of filter paper of filter after modification is handled, it quantitatively, thickness and air permeability index do not have significant change, and the maximum diameter of hole index of hole obviously reduces between filter paper fibre, so that the aperture of hole is tending towards evenly, this can make corresponding cleaner improve filtering efficiency under the constant substantially prerequisite of original resistance.

Filtering efficiency and service life that three kinds of filter paper of filter handling through modification for checking help to improve corresponding cleaner, three kinds of forward and backward filter paper of filter are handled in modification to be used in respectively in air filter, oil filter, the diesel fuel filter, and carry out the test stand performance contrast test, result of the test sees Table II (be meant before the modification in the Table II that a kind of filter paper of filter before modification is handled is used in the corresponding cleaner, be meant after the modification in the Table II that a kind of filter paper of filter after modification is handled is used in the corresponding cleaner).

Table II

		Test method	Original resistance		The filtering efficiency % of laboratory		Laboratory's life-span
			Original resistance		The filtering efficiency % of laboratory		Laboratory's life-span		Specification requirement	Result of the test	Specification requirement	Result of the test	Specification requirement	Result of the test
			Air filter	Before the modification	JB/T9747-2005 " combustion air cleaner method for testing performance "	? ??≤0.3KPa ? ??JB/T9756- ? ??1999	??0.28KPa	? ??≥99.5 ? ??JB/T9756- ? ??1999	Specification requirement	Result of the test	Specification requirement	Result of the test	Specification requirement	Result of the test	??99.45	? ??≥4h ? ??JB/T9755- ? ??1999	??4.1h
After the modification	? ??0.27KPa	? ??99.88		Before the modification			??0.28KPa		? ??5.6h						??99.45		??4.1h
After the modification	? ??0.27KPa	? ??99.88		Oil filter			Before the modification		? ??5.6h	JB/T5099-91 " internal combustion engine paper filter core oil-filter asgine oil conditioner test method "	? ? ??≤0.025MPa ??JB5088-91	? ??0.024MPa	? ? ??≥60 ? ??JB5088-91	? ??63.5	? ? ??≥3h ? ??JB5088-91		? ??2.95h
After the modification	? ? ??0.024MPa	? ? ??71.3	? ? ??3.9h				Before the modification					? ??0.024MPa		? ??63.5			? ??2.95h
After the modification	? ? ??0.024MPa	? ? ??71.3	? ? ??3.9h		Diesel fuel filter	Before the modification	JB/T8122-1999 " diesel engine diesel fuel filter test method "	? ? ? ??≤8KPa ? ??JB5241-91	? ? ??6.3KPa			? ? ? ??≥90 ? ??JB5241-91		? ? ??90.6		? ? ? ??≥30min ? ??JB5241-91	? ? ??34min
After the modification	? ??6.1KPa	? ??93.8	? ??43min			Before the modification			? ? ??6.3KPa					? ? ??90.6			? ? ??34min

By Table II as seen, after three kinds of filter paper of filter after modification is handled are used in the corresponding cleaner respectively, every kind of cleaner is under the constant substantially situation of original resistance, its laboratory's filtering efficiency and laboratory are significantly improved in the life-span, therefore, also can be significantly improved filtering efficiency and the service life under every kind of actual user mode of cleaner.Like this, to help significantly reducing the particulate loading that enters engine aspirating system, lubricating system, combustion system, reduce the wearing and tearing of kinematic pair such as cylinder sleeve of engine piston ring, crankshaft-link rod and high-pressure oil pump plunger matching parts, for advantageous conditions has been created in the raising of engine performance.

Embodiment 9:

Referring to Fig. 2, use the embodiment of the invention 2 described modified liquid for filter paper of filter and adopt this conventional method of dipping that same batch of outsourcing filter paper of filter described in Fig. 1 carried out the modification processing, the concrete processing step of handling is identical (because the concrete processing step of the filter paper of filter modification having been handled among the embodiment 8 has been done comparatively detailed description with embodiment 8, therefore, here repeat no more), the concrete technological parameter of handling is: the time of staying of filter paper in impregnating bath 2 is 26 seconds, to guarantee that filter paper impregnation fully (promptly adopts this conventional method of dipping respectively to form a skim on the obverse and reverse of filter paper of filter), temperature constant in the Aisle type baking oven 6 is 120 ℃, the drying time of filter paper in Aisle type baking oven 6 is 1.7min, to guarantee the filter paper oven dry fully, so just can on filter paper of filter, obtain two-layer modified membrane.

Embodiment 10:

Referring to Fig. 2, use the embodiment of the invention 3 described modified liquid for filter paper of filter and adopt this conventional method of dipping that same batch of outsourcing filter paper of filter described in Fig. 1 carried out the modification processing, the concrete processing step of handling is identical (because the concrete processing step of the filter paper of filter modification having been handled among the embodiment 8 has been done comparatively detailed description with embodiment 8, therefore, here also repeat no more), the concrete technological parameter of handling is: the time of staying of filter paper in impregnating bath 2 is 30 seconds, to guarantee that filter paper impregnation fully (promptly adopts this conventional method of dipping respectively to form a skim on the obverse and reverse of filter paper of filter), temperature constant in the Aisle type baking oven 6 is 110 ℃, the drying time of filter paper in Aisle type baking oven 6 is 2min, to guarantee the filter paper oven dry fully, so just can on filter paper of filter, obtain two-layer modified membrane.

Embodiment 11:

The use embodiment of the invention 4 described modified liquid for filter paper of filter and this conventional method of employing spraying are carried out the modification processing to the outsourcing filter paper of filter of other batch, that is: adopt this conventional method of spraying on the obverse and reverse of filter paper of filter, respectively to form a skim, then at 130 ℃ of constant temperature 1.5min, to guarantee the filter paper oven dry fully, so just can on filter paper of filter, obtain two-layer modified membrane.

Embodiment 12:

The use embodiment of the invention 5 described modified liquid for filter paper of filter and this conventional method of employing spraying are carried out the modification processing to the outsourcing filter paper of filter of other batch, that is: adopt this conventional method of spraying on the obverse and reverse of filter paper of filter, respectively to form a skim, then at 120 ℃ of constant temperature 1.7min, to guarantee the filter paper oven dry fully, so just can on filter paper of filter, obtain two-layer modified membrane.

Embodiment 13:

The use embodiment of the invention 6 described modified liquid for filter paper of filter and this conventional method of employing spraying are carried out the modification processing to the outsourcing filter paper of filter of other batch, that is: adopt this conventional method of spraying on the obverse and reverse of filter paper of filter, respectively to form a skim, then at 110 ℃ of constant temperature 2min, to guarantee the filter paper oven dry fully, so just can on filter paper of filter, obtain two-layer modified membrane.

Embodiment 14:

The use embodiment of the invention 7 described modified liquid for filter paper of filter and this conventional method of employing spraying are carried out the modification processing to the outsourcing filter paper of filter of other batch, that is: adopt this conventional method of spraying on the obverse and reverse of filter paper of filter, respectively to form a skim, then at 120 ℃ of constant temperature 1.8min, to guarantee the filter paper oven dry fully, so just can on filter paper of filter, obtain two-layer modified membrane.

Claims

1, modified liquid for filter paper of filter is characterized in that: it comprises following component:

Benzene emulsion or organosilicon-acrylic resin emulsion 4～20 weight portions

Melamine 1～4 weight portion

Solvent 24～78.9 weight portions.

2, modified liquid for filter paper of filter according to claim 1 is characterized in that:

Solvent is any one in water, deionized water, ethanol, the isopropyl alcohol.

3, modified liquid for filter paper of filter according to claim 2 is characterized in that: its component also comprises: ptfe emulsion 15～35 weight portions.

4, modified liquid for filter paper of filter according to claim 3 is characterized in that: its component also comprises:

Micron order or Nano titanium dioxide particle 1～10 weight portion

Polyoxyethylene nonylphenol ether-13 0.1～2 weight portion.

5, the preparation method of the described modified liquid for filter paper of filter of claim 2, it is characterized in that: after the solvent that adds 24～78.9 weight portions in the benzene emulsion of 4～20 weight portions or organosilicon-acrylic resin emulsion dilutes, the melamine that adds 1～4 weight portion, and stir, solvent is any one in water, deionized water, ethanol, the isopropyl alcohol, can make described modified liquid for filter paper of filter.

6, the preparation method of modified liquid for filter paper of filter according to claim 5 is characterized in that: also be included in the described modified liquid for filter paper of filter that makes and add the ptfe emulsion of 15～35 weight portions, and stir.

7, the preparation method of modified liquid for filter paper of filter according to claim 6, it is characterized in that: also be included in the polyoxyethylene nonylphenol ether-13 of the micron order that adds 1～10 weight portion in the described modified liquid for filter paper of filter that makes or Nano titanium dioxide particle, 0.1～2 weight portion, and stir.

8, the purposes of any one described modified liquid for filter paper of filter in the claim 2 to 4, it is characterized in that: adopt spraying, flood these two kinds of conventional methods and on the obverse and reverse of filter paper of filter, respectively form a skim, at 110～130 ℃ of constant temperature 1.5～2min, can on filter paper of filter, obtain two-layer modified membrane then.