A kind of high-strength high temperature-resistant oil filter paper and preparation method thereofTechnical field
The present invention relates to a kind of filter paper of filter, be specifically related to a kind of high-strength high temperature-resistant oil filter paper and preparation method thereof.
Background technology
Oil filter is a class in the fuel filter, be arranged in engine lubrication system, its upstream is lubricating oil pump, the downstream is to need each parts of lubricating in the engine, its effect is to carrying out filtering from objectionable impurities in the machine oil of oil sump, engine oil supplying bent axle with cleaning, connecting rod, camshaft, booster, the parts such as piston ring, play lubricated, cooling, cleaning action, thereby prolong the life-span of these parts, the employed filtering material of oil filter adopts filter paper to manufacture more, so the quality of filter paper directly affects the efficient of filter element filtering machine oil, existing Adsorption of Filter Paper is relatively poor, filtering efficiency is low, 60% impurity in can only filtering machine oil, the impurity that is greater than or less than its paper filter element micropore is not all had permanent filtration, can only be equal to the paper filter element micropore and the impurity that is mounted in the paper filter element micropore plays permanent filtering effect to those; At high temperature, filtering efficiency even be zero, thus bring continual secondary wearing and tearing to engine; It is poor that existing filter paper also has heat-resisting quantity in addition, poor water resistance, the shortcoming such as tensile strength is low, bursting strength is low, thereby the service life of having limited filter paper.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of oil filter high-temperature fibre filter paper and preparation method thereof is provided, improve the performances such as the absorption property of filter paper and high temperature resistant, bursting strength, tensile strength, thereby improve the filtering efficiency of filter paper and prolong service life of filter paper.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of high-strength high temperature-resistant oil filter paper is made by the raw material of following weight portion: softwood pulp 50-60, polybenzimidazole fiber 20-30, resurrection glass fibre 20-30, modified meerschaum 2-5, lithopone 1-3, atlapulgite 2-4, nano titanium oxide 1-2, deca-BDE 0.5-0.8, cationic polyacrylate emulsion 2-3, glycerol glycerinate 0.5-1, diglycollic amide 0.4-0.8, vinyltriethoxysilane 0.5-1, sldium lauryl sulfate 0.4-0.8, dialdehyde starch 2-5.
Described modified meerschaum is made by following methods: the sepiolite raw ore is dissolved in an amount of water, mechanical agitation is made into mud and the removal of impurities of 50-60%, deironing, add again its gross weight 0.2-0.4% calgon shear agitation 20-24h, behind the standing sedimentation 20-24h, get the sepiolite oven dry that the upper strata suspends, add an amount of 10-15% hydrochloric acid at 80-90 ℃ of lower heating 10-12h, filter, washing is to neutrality, roasting, roasting rear adding 2-5% hexadecane trimethyl ammonium bromide ball milling 5-8h, washing is filtered, oven dry, be ground to 200-300 order powder, can obtain modified meerschaum.
Described cationic polyacrylate emulsion is made by following methods: add deionized water 70-80 part in reactor; under nitrogen protection; add acrylamide 5-7 part, butyl acrylate 10-12 part, vinyl acetate 15-18 part, styrene 5-7 part, diallyldimethylammonium chloride 1-2, emulsifier op-10 1-1.5 part, potassium peroxydisulfate 0.15-0.2 part; stir; be warming up to 80-90 ℃, cooling discharging behind the reaction 2-3h.
The preparation method of described high-strength high temperature-resistant oil filter paper may further comprise the steps:
(1) first modified meerschaum, atlapulgite, lithopone, nano titanium oxide are mixed, add again vinyltriethoxysilane, fully stir 10-20min after, leave standstill 5-8min, then 100-120 ℃ of lower oven dry, obtain powder body material;
(2) softwood pulp, polybenzimidazole fiber, resurrection glass fibre are weighed by proportioning respectively, put into pulper, adding an amount of sulfuric acid water size degradation is the slurry of 5-6% to solid content, adds dialdehyde starch and continues size degradation 1-2h, makes mixed slurry;
(3) powder body material that step (1) is made adds in the mixed slurry, add deca-BDE, glycerol glycerinate, diglycollic amide, sldium lauryl sulfate, be heated to 70-80 ℃, stir, after fluffer is discongested, defibrination again, add an amount of water size mixing to solid content be 2-3%, the slurry that mixes up aspirates dehydration to the l Water Paper after the moulding under the vacuum condition of 0.05-0.08Mpa after the forming web moulding;
(4) cationic polyacrylate emulsion being diluted to solid content is 5-8%, make the even dipping emulsion of paper after the dehydration with spreader, then will flood oven dry 2-5min in the good paper electric drying oven with forced convection, dry 5-10min on polisher namely gets high-strength high temperature-resistant oil filter paper of the present invention after the taking-up at last.
The present invention and prior art have following beneficial effect:
Added polybenzimidazole fiber and resurrection glass fibre in the filter paper of the present invention, can improve heat-resisting quantity and the intensity of filter paper, filter paper is behind the cationic polyacrylate dipping, and folding strength and bursting strength significantly improve.The advantages such as the filter paper that the present invention prepares has good water permeability, filter area is large, the maximum diameter of hole is little, filtering accuracy is high, bursting strength is strong, high temperature resistant, filter efficiency reaches 99.98%, stable performance indications are arranged under normal temperature and worst hot case, have preferably heatproof and filter effect.
The specific embodiment
The present invention is further illustrated below in conjunction with specific embodiment.
Embodiment
A kind of high-strength high temperature-resistant oil filter paper is made by the raw material of following weight portion: 60 parts of softwood pulps, 30 parts of polybenzimidazole fiber, 30 parts of resurrection glass fibres, 5 parts of modified meerschaums, 3 parts in lithopone, 4 parts of atlapulgites, 2 parts of nano titanium oxides, 0.8 part of deca-BDE, 3 parts of cationic polyacrylate emulsions, 1 part of glycerol glycerinate, 0.8 part of diglycollic amide, 1 part of vinyltriethoxysilane, 0.8 part of sldium lauryl sulfate, 5 parts of dialdehyde starchs.
Described modified meerschaum is made by following methods: the sepiolite raw ore is dissolved in an amount of water, mechanical agitation is made into 60% mud and removal of impurities, deironing, add again its gross weight 0.4% calgon shear agitation 24h, behind the standing sedimentation 24h, get the sepiolite oven dry that the upper strata suspends, add 15% an amount of hydrochloric acid at 90 ℃ of lower heating 12h, filter, washing is to neutrality, roasting, roasting rear adding 5% hexadecane trimethyl ammonium bromide ball milling 8h, washing is filtered, oven dry, be ground to 200 order powder, can obtain modified meerschaum.
Described cationic polyacrylate emulsion is made by following methods: add 70 parts of deionized waters in reactor; under nitrogen protection; add 5 parts of acrylamides, 10 parts of butyl acrylates, 15 parts of vinyl acetates, 5 parts of styrene, 1.2 parts of diallyldimethylammonium chlorides, 1 part of emulsifier op-10,0.15 part of potassium peroxydisulfate; stir; be warming up to 80 ℃, cooling discharging behind the reaction 3h.
The preparation method of described high-strength high temperature-resistant oil filter paper may further comprise the steps:
(1) first modified meerschaum, atlapulgite, lithopone, nano titanium oxide are mixed, add again vinyltriethoxysilane, fully stir 20min after, leave standstill 8min, then 110 ℃ of lower oven dry, obtain powder body material;
(2) softwood pulp, polybenzimidazole fiber, resurrection glass fibre are weighed by proportioning respectively, put into pulper, add an amount of sulfuric acid water size degradation and to solid content be 6% slurry, add dialdehyde starch and continue size degradation 2h, make mixed slurry;
(3) powder body material that step (1) is made adds in the mixed slurry, add deca-BDE, glycerol glycerinate, diglycollic amide, sldium lauryl sulfate, be heated to 80 ℃, stir, after fluffer is discongested, defibrination again, add an amount of water size mixing to solid content be 3%, the slurry that mixes up aspirates dehydration to the l Water Paper after the moulding under the vacuum condition of 0.05Mpa after the forming web moulding;
(4) cationic polyacrylate emulsion being diluted to solid content is 6%, make the even dipping emulsion of paper after the dehydration with spreader, then will flood oven dry 4min in the good paper electric drying oven with forced convection, dry 8min on polisher namely gets high-strength high temperature-resistant oil filter paper of the present invention after the taking-up at last.
After testing, the one-tenth paper air permeability of the filter paper that makes of the present invention is at 90L/m2S, the maximum diameter of hole is 48 μ m, and average pore size is 28 μ m, and wet expansion is 0.58%, and wet bursting strength is 389KPa, and tensile strength is 15.12kNm, and filtering accuracy is 5 μ m, and removal of impurity is 99.98%.