CN102995493B - Filter paper for elevator filter and preparation method of filter paper - Google Patents

Abstract

The invention discloses a filter paper for an elevator filter and a preparation method thereof. The raw materials are composed of the following parts by weight: composition A: rice straw pulp, mineral wool fiber, bamboo charcoal, modified water-soluble phenolic resin, aniline methyl triethoxy silane, epoxidized triglyceride, ammonium dihydrogen phosphate, sodium citrate, dilauryl ester, polycaprolactone, polyethylene glycol, isooctyltin dimethyl dimercaptoacetate, di Ethanolamide, modified styrene; composition B: bamboo pulp, polybenzimidazole fiber, white latex, modified hydrotalcite powder, sodium tripolyphosphate, potassium silicate solution, nano calcium carbonate, sodium diacetate, poly- 4-Methyl-1-pentene and diffusing agent NNO. The invention adopts straw pulp, mineral wool fiber, bamboo pulp and polybenzimidazole fiber as main materials at the same time, which is environmentally friendly and scientific, with reasonable raw material formula, good compatibility among components, improved strength, toughness and corrosion resistance, and surface gloss Good temperature, stable performance index under normal temperature and high temperature conditions, good temperature resistance and filtering effect, the maximum pore size is 49-52μm, the average pore size is 36-38μm, and the paper air permeability is 87-93L/m ² . Between S.

Description

A kind of filter paper for elevator filter and preparation method thereof

technical field

The invention relates to the field of automobile filters, in particular to a filter paper for elevator filters and a preparation method thereof.

Background technique

The filter is an important part of the engine. Its function is to filter out particles such as dust and mechanical impurities in the elevator, diesel oil, and engine oil entering the engine, so as to reduce the engine cylinder liner piston ring, crankshaft connecting rod kinematic pair and high-pressure oil pump plunger. Wear of even parts, optimize the combustion process of the engine, and reduce the emission of organic pollutants such as carbon monoxide. the

As an effective filter medium, filter paper has been widely used in various fields. According to the different types of fibers that make up the filter paper, the performance and use of the filter paper are also different. There are ordinary filter paper for general occasions, glass fiber filter paper for high temperature, and polypropylene filter paper for ultra-clean use. According to whether the filter paper is impregnated or not, it can be divided into two categories, namely impregnated filter paper and non-impregnated filter paper. Dipping filter paper is divided into solidified filter paper and non-cured filter paper.

With the continuous improvement of filtration requirements, any filter paper composed of a single fiber is becoming more and more difficult to meet the requirements of use, so filter paper composed of multiple fibers came into being. The commonly used fibers in filter paper production are wood fibers. , chemical fibers, glass fibers, etc.

Contents of the invention

The purpose of the present invention is to provide a kind of filter paper for elevator filter and its preparation method. The present invention uses rice straw pulp, mineral wool fiber, bamboo pulp and polybenzimidazole fiber as main materials at the same time, which is environmentally friendly and scientific, and the raw material formula is reasonable. Good compartmental compatibility, improved strength, toughness and corrosion resistance, good surface gloss, stable performance indicators under normal temperature and high temperature conditions, good temperature resistance and filtering effect, and its maximum pore size is 49-52μm, The average pore diameter is 36-38μm, and the paper air permeability is between 87-93L/m ² .S.

In order to achieve the above object, the present invention adopts the following technical solutions:

A filter paper for an elevator filter, the parts by weight of which are composed of raw materials are:

Composition A: straw pulp 72-76, mineral wool fiber 22-25, bamboo charcoal 4-6, modified water-soluble phenolic resin 1.3-1.8, anilinomethyltriethoxysilane 1.2-1.5, epoxidized triglyceride Ester 0.9-1.1, ammonium dihydrogen phosphate 1.2-1.4, sodium citrate 0.3-0.5, didodecyl alcohol ester 0.2-0.4, polycaprolactone 10-12, polyethylene glycol 1.0-2.0, dimethyl Isooctyl tin dimercaptoacetate 0.7-0.9, diethanolamide 1.4-2.0, modified styrene 1.3-1.5.

Composition B: bamboo pulp 20-25, polybenzimidazole fiber 10-15, white latex 1-3, modified hydrotalcite powder 0.2-0.4, sodium tripolyphosphate 0.7-1.0, potassium silicate solution 0.3-0.5, Nano calcium carbonate 1.0-2.5, sodium diacetate 1.5-2.5, poly-4-methyl-1-pentene 0.8-1.0 and diffusing agent NNO 0.4-0.6.

The filter paper used for the elevator filter, the parts by weight of its constituent raw materials are:

Composition A: straw pulp 74, mineral wool fiber 24, bamboo charcoal 5, modified water-soluble phenolic resin 1.5, anilinomethyltriethoxysilane 1.4, epoxidized triglyceride 1, ammonium dihydrogen phosphate 1.3, lemon Sodium Dimethyl Dithioglycolate 0.4, Didodecyl Alcohol 0.3, Polycaprolactone 11, Polyethylene Glycol 1.5, Dimethyl Dithioglycolate Isooctyl Tin 0.8, Diethanolamide 1.7, Modified Styrene 1.4.

Composition B: bamboo pulp 22, polybenzimidazole fiber 12, white latex 2, modified hydrotalcite powder 0.3, sodium tripolyphosphate 0.9, potassium silicate solution 0.4, nano calcium carbonate 1.8, sodium diacetate 2.0, poly- 4-methyl-1-pentene 0.9 and diffusing agent NNO 0.5.

The preparation method of filter paper for elevator filter comprises the following steps:

(1) Weigh all the raw materials in composition A and composition B according to the weight parts of the raw materials, mix the straw pulp and mineral wool fiber respectively, put them into a pulper and disintegrate them, and obtain a compound with a solid content of 4-6%. Slurry, mixed slurry A is obtained, bamboo pulp and polybenzimidazole fiber are mixed and put into a pulper to disintegrate to obtain a slurry with a solid content of 4-6%, and mixed slurry B is obtained;

(2) In step (1) the mixed slurry A and the mixed slurry B are respectively added the remaining other raw materials according to the weight of the composition raw materials to obtain the composition A and the composition B respectively, and then mix the composition A and the composition B. Heating to 70-80°C; after being decomposed by a deflagging machine, then refining. After refining, the pulp obtained is adjusted by adding water to a solid content of 2-3%. After the paper is made according to the conventional papermaking process, it is formed, pressed, and dried. have to.

The preparation method of the modified water-soluble phenolic resin is to add nano-carbon 0.2-0.3, water-soluble phenolic resin 3-4, 1-2 carboxymethyl cellulose, 3-4 iron oxide to the water-soluble phenolic resin, mix and heat To 70-80 ℃, cooling after 30-40 minutes.

The preparation method of the modified styrene is to add styrene to 3 parts of 4,4'-diphenylmethane diisocyanate, 3 parts of polyacrylate, 2 parts of vinyltrisilane and 2 parts of sebacate, and stir Uniform reaction for 1 hour.

The preparation method of the modified hydrotalcite powder is to first soak the hydrotalcite powder with 15-20% hydrochloric acid for 1-2 hours, let it stand, clarify, centrifuge, wash the solid with water until neutral, after drying, add the equivalent solid 3-5% by weight of vinyltriethoxysilane is stirred evenly, dried and crushed into powder.

Beneficial effects of the present invention:

The invention adopts straw pulp, mineral wool fiber, bamboo pulp and polybenzimidazole fiber as main materials at the same time, which is environmentally friendly and scientific, with reasonable raw material formula, good compatibility among components, improved strength, toughness and corrosion resistance, and surface gloss Good temperature, stable performance index under normal temperature and high temperature conditions, good temperature resistance and filtering effect, the maximum pore size is 49-52μm, the average pore size is 36-38μm, and the paper air permeability is 87-93L/m ² . between S.

Detailed ways

Embodiment 1: filter paper for elevator filter, the parts by weight of its composition raw materials are:

Composition A: straw pulp 74, mineral wool fiber 24, bamboo charcoal 5, modified water-soluble phenolic resin 1.5, anilinomethyltriethoxysilane 1.4, epoxidized triglyceride 1, ammonium dihydrogen phosphate 1.3, lemon Sodium Dimethyl Dithioglycolate 0.4, Didodecyl Alcohol 0.3, Polycaprolactone 11, Polyethylene Glycol 1.5, Dimethyl Dithioglycolate Isooctyl Tin 0.8, Diethanolamide 1.7, Modified Styrene 1.4.

Composition B: bamboo pulp 22, polybenzimidazole fiber 12, white latex 2, modified hydrotalcite powder 0.3, sodium tripolyphosphate 0.9, potassium silicate solution 0.4, nano calcium carbonate 1.8, sodium diacetate 2.0, poly- 4-methyl-1-pentene 0.9 and diffusing agent NNO 0.5.

The preparation method of filter paper for elevator filter comprises the following steps:

(1) Weigh all the raw materials in composition A and composition B according to the weight parts of the raw materials, mix the straw pulp and mineral wool fiber respectively, put them into a pulper and disintegrate them, and obtain a compound with a solid content of 4-6%. Slurry, mixed slurry A is obtained, bamboo pulp and polybenzimidazole fiber are mixed and put into a pulper to disintegrate to obtain a slurry with a solid content of 4-6%, and mixed slurry B is obtained;

(2) In step (1) the mixed slurry A and the mixed slurry B are respectively added the remaining other raw materials according to the weight of the composition raw materials to obtain the composition A and the composition B respectively, and then mix the composition A and the composition B. Heating to 70-80°C; after being decomposed by a deflagging machine, then refining. After refining, the pulp obtained is adjusted by adding water to a solid content of 2-3%. After the paper is made according to the conventional papermaking process, it is formed, pressed, and dried. have to.

The preparation method of the modified water-soluble phenolic resin is to add nano-carbon 0.2-0.3, water-soluble phenolic resin 3-4, 1-2 carboxymethyl cellulose, 3-4 iron oxide to the water-soluble phenolic resin, mix and heat To 70-80 ℃, cooling after 30-40 minutes.

The preparation method of the modified styrene is to add styrene to 3 parts of 4,4'-diphenylmethane diisocyanate, 3 parts of polyacrylate, 2 parts of vinyltrisilane and 2 parts of sebacate, and stir Uniform reaction for 1 hour.

The preparation method of the modified hydrotalcite powder is to first soak the hydrotalcite powder with 15-20% hydrochloric acid for 1-2 hours, let it stand, clarify, centrifuge, wash the solid with water until neutral, after drying, add the equivalent solid 3-5% by weight of vinyltriethoxysilane is stirred evenly, dried and crushed into powder.

The performance detection data of the filter paper for the elevator filter made by the above-mentioned method are as follows:

Gram weight: 128g/cm ² ; Burst resistance: 309Kpa; Air permeability: 493ml/10cm ² min; The maximum pore diameter is 49-52μm, the average pore diameter is 36-38μm, and the air permeability of the finished paper is between 87-93L/m ² .S between.

Claims (3)

1. a lift cleaner filter paper, is characterized in that the weight portion of its constitutive material is:

Composition A: rice straw pulp 72-76, mineral wool fiber 22-25, bamboo charcoal 4-6, Modified Water Soluble Phenolic Resin 1.3-1.8, anilinomethyl triethoxysilane 1.2-1.5, epoxidation triglyceride 0.9-1.1, ammonium dihydrogen phosphate (ADP) 1.2-1.4, natrium citricum 0.3-0.5, two Lauryl Alcohol ester 0.2-0.4, polycaprolactone 10-12, polyethylene glycol 1.0-2.0, dimethyl dimercapto 2-ethyl hexyl ethanoate tin 0.7-0.9, diglycollic amide 1.4-2.0, modified phenylethylene 1.3-1.5;

Composition B: bamboo pulp 20-25, polybenzimidazole fiber 10-15, white glue with vinyl 1-3, modified hydrotalcite powder 0.2-0.4, sodium phosphate trimer 0.7-1.0, potassium silicate solution 0.3-0.5, nano-calcium carbonate 1.0-2.5, sodium Diacetate 1.5-2.5, poly--4-methyl-1-pentene 0.8-1.0 and dispersing agent NNO 0.4-0.6;

Described Modified Water Soluble Phenolic Resin preparation method, for to add nano-sized carbon 0.2-0.3, water soluble phenol resin 3-4,1-2 carboxymethyl cellulose, 3-4 iron oxide in water soluble phenol resin, is mixed and heated to 70-80 DEG C, cooling and get final product after 30-40 minute;

The preparation method of described modified phenylethylene is for adding styrene in 2 parts of 3 parts of 4,4 '-methyl diphenylene diisocyanates, 3 parts of polyacrylate, 2 parts of vinyl tris silanes, sebacate, and the reaction that stirs obtains for 1 hour;

The preparation method of described modified hydrotalcite powder, for first using 15-20% salt acid soak hydrotalcite powder 1-2 hour, leaves standstill, clarification, centrifugal, solid washes with water to neutrality, after oven dry, add that to be equivalent to the vinyltriethoxysilane agitating of solid weight 3-5% even, dry, be ground into powder.

2. lift cleaner filter paper according to claim 1, is characterized in that the weight portion of its constitutive material is:

Composition A: rice straw pulp 74, mineral wool fiber 24, bamboo charcoal 5, Modified Water Soluble Phenolic Resin 1.5, anilinomethyl triethoxysilane 1.4, epoxidation triglyceride 1, ammonium dihydrogen phosphate (ADP) 1.3, natrium citricum 0.4, two Lauryl Alcohol ester 0.3, polycaprolactone 11, polyethylene glycol 1.5, dimethyl dimercapto 2-ethyl hexyl ethanoate tin 0.8, diglycollic amide 1.7, modified phenylethylene 1.4;

Composition B: bamboo pulp 22, polybenzimidazole fiber 12, white glue with vinyl 2, modified hydrotalcite powder 0.3, sodium phosphate trimer 0.9, potassium silicate solution 0.4, nano-calcium carbonate 1.8, sodium Diacetate 2.0, poly--4-methyl-1-pentene 0.9 and dispersing agent NNO 0.5.

3. a preparation method for lift cleaner filter paper as claimed in claim 1, is characterized in that comprising the following steps:

(1) take all raw materials in composition A and composition B by the weight portion of constitutive material, after respectively rice straw pulp, mineral wool fiber being mixed, put into pulper size degradation, obtain the slurry that solid content is 4-6%, obtain mixed slurry A, after being mixed, bamboo pulp, polybenzimidazole fiber put into pulper size degradation, obtain the slurry that solid content is 4-6%, obtain mixed slurry B;

(2) in the mixed slurry A of step (1) and mixed slurry B, add respectively by other raw materials of the residue of the weight portion of constitutive material, obtain respectively composition A and composition B, then blend compositions A and composition B, be heated to 70-80 DEG C; After fluffer is discongested, then defibrination, after defibrination, gained slurry is sized mixing through adding water, to after solid content 2-3% according to conventional paper technology copy paper, moulding squeezing, be drying to obtain.