CN101492884B - Dacron aculeus filtering felt surface coating process - Google Patents
Dacron aculeus filtering felt surface coating process Download PDFInfo
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- CN101492884B CN101492884B CN2009100467840A CN200910046784A CN101492884B CN 101492884 B CN101492884 B CN 101492884B CN 2009100467840 A CN2009100467840 A CN 2009100467840A CN 200910046784 A CN200910046784 A CN 200910046784A CN 101492884 B CN101492884 B CN 101492884B
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Abstract
The invention provides a surface coating technique for a polyester fiber needling filter felt, comprising: step 1, formulating a surface coating liquid; step 2, penetrating a semi-finished product of the polyester fiber needling felt, which is subjected to singeing in impregnation technology, into a coating apparatus to then enter into a stenter shaping box at the temperature of 150 DEG C; pouring the well-formulated coating liquid into a coating rubber groove to the half height thereof; step 3, placing a Phi300 coating roller downwards inside the rubber groove with the area occupied being about one third of that of the rubber groove; step 4, regulating the spacing between a scraper and an rubber roller to 5mm; step 5, launching the coating apparatus while synchronously launching an oven at a speed of 3.5m/min; step 6, maintaining the coating liquid in the rubber groove at the same height in the whole coating process; step 7, subjecting the coating liquid to hot pressing technique after drying and curing in order to be cut into products. The invention has the advantages of resisting chemical erosion, high mechanical strength, resisting higher filtration load, smooth surface of the filter felt, easiness for dust removal, low resistance in operating dust removal apparatuses and high filter precision.
Description
Technical field
The present invention provides a kind of dacron aculeus filtering felt surface coating process, belongs to the plastic cement technical field.
Background technology
At present, the polyester fiber needled filtering felt, the dust that is widely used under the commercial production border filters, and still, on ash-removal effect, also there is weak point in the resistance to chemical attack aspect.
Summary of the invention
For solving foregoing problems, the present invention provides a kind of dacron aculeus filtering felt surface coating process; This technical process is:
Step 1 with producing good polyester fiber semi-finished product, is carried out impregnation technology and is handled;
Step 2 will be carried out the polyester fiber semi-finished product after impregnation technology is handled, and carry out process for surface coating and handle;
Said impregnation technology is:
Step 1, the preparation chemical treatments;
Step 2, dipping after the polyester fiber semi-finished product that production is good are soaked in chemical treatments, gets into baking oven through duo mill, and pick-up rate is a chemical treatments: semi-finished product=0.8: 1, speed are 2.8m/min;
Step 3, preliminary drying;
Step 4 is cured;
Step 5, HEAT SETTING;
Step 6 is singed;
Step 7, semi-finished product.
The preparation of said chemical treatments is:
A takes by weighing fluorine-containing antacid 20kg, pours in the 600kg rustless steel container;
B takes by weighing 0.200kg oxalic acid crystalline solid, inserts in the rustless steel container of 5kg;
C, the deionized water 3.8kg that accurately takes by weighing 80 ℃ pours in the said vesse, and mix stirring with oxalic acid for use;
Wherein, chemical treatments preparation by weight, component is:
Title material percentage by weight %
Fluorine-containing antacid 20.00 4.00
Oxalic acid 0.20 0.04
Water 479.8 95.96.
Said process for surface coating is:
Step 1, preparation face coat liquid:
(1) takes by weighing PTFE dispersion liquid 60kg, account for 15% of total Huaihe River coating liquid weight; Join in the rustless steel container of 500kg;
(2) take by weighing emulsion acrylic resin 6kg, account for 1.5% of total coating liquid weight; Join in the rustless steel container of above-mentioned 500kg;
(3) take by weighing 333.8kg water, account for 83.45% of total coating liquid weight; Join in the said vesse, stir;
(4) in said vesse, add 200g ammoniacal liquor, stir, regulating pH value is 12;
(5) in said vesse, inject water to 400kg, stir.
Step 2 penetrates coating apparatus with the semi-finished product of the perverse felt of polyester fiber pin after the singeing that impregnation technology is handled by coating process, gets into the stentering forming case, and temperature is 150 ℃;
The coating liquid for preparing is poured in the coating adhesive groove, to 1/2nd height;
Step 3 is inserted Φ 300 coating rollers downwards in the glue groove about one-third of the area;
Step 4, the spacing of regulating scraper and glue rod is 5mm;
Step 5 is opened coating apparatus, opens baking oven synchronously, and speed is 3.5m/min;
Step 6, what remain glue groove floating coat liquid in the coating procedure is same height;
Step 7, baking and curing is after behind the heat pressing process, be cut to product;
Wherein, heat pressing process is:
Last central roll spacing: 2.5mm, the last roll temperature of up-down rollers spacing: 2.0mm: 150 ℃, following roll temperature: normal temperature, speed: m/min.
The invention has the advantages that: 1, resistance to chemical attack 2, mechanical strength is high by 3, anti-higher filtration load 4, the filter felt smooth surface, easy-to-clean ash, 5, the cleaner running resistance is little, and 6, filtering accuracy is high.
The specific embodiment
The present invention is in producing polyester fiber needled filtering felt process, with the semi-finished product after the singeing of its impregnation technology processing, as coating object of the present invention, by the technical process of aforementioned summary of the invention, can accomplish new product of the present invention.And the technology of producing the polyester fiber needled filtering felt is known technology, and the present invention no longer repeats.
Claims (1)
1. dacron aculeus filtering felt surface coating process is characterized in that: the step of this technology is with producing good polyester fiber semi-finished product, carries out carrying out process for surface coating again and handling after impregnation technology handles; Wherein, the impregnation technology treatment step is:
Step 1, the preparation chemical treatments;
Step 2, dipping after the polyester fiber semi-finished product that production is good are soaked in chemical treatments, gets into baking oven through duo mill, and pick-up rate is a chemical treatments: semi-finished product=0.8: 1, speed are 2.8m/min;
Wherein, chemical treatments preparation by weight, component is:
Title material percentage by weight %
Fluorine-containing antacid 20.00 4.00
Oxalic acid 0.20 0.04
Water 479.8 95.96;
Step 3, preliminary drying;
Step 4 is cured;
Step 5, HEAT SETTING;
Step 6 is singed;
Step 7, semi-finished product;
The process for surface coating treatment step is:
Step 1, preparation face coat liquid:
(1) takes by weighing PTFE dispersion liquid 60kg, account for 15% of total coating liquid weight; Join in the rustless steel container of 500kg;
(2) take by weighing emulsion acrylic resin 6kg, account for 1.5% of total coating liquid weight; Join in the rustless steel container of above-mentioned 500kg;
(3) take by weighing 333.8kg water, account for 83.45% of total coating liquid weight; Join in the said vesse, stir;
(4) in said vesse, add 200g ammoniacal liquor, stir, regulating pH value is 12;
(5) in said vesse, inject water to 400kg, stir;
Step 2, the semi-finished product that the polyester fiber Nomex is handled through impregnation technology penetrate coating apparatus by coating process, get into the stentering forming case, and temperature is 150 ℃;
The coating liquid for preparing is poured in the coating adhesive groove, to 1/2nd height;
Step 3 is inserted Φ 300 coating rollers downwards in the glue groove about one-third of the area;
Step 4, the spacing of regulating scraper and glue rod is 5mm;
Step 5 is opened coating apparatus, opens baking oven synchronously, and speed is 3.5m/min;
Step 6, remaining glue groove floating coat liquid in the coating procedure is same height;
Step 7, baking and curing is after behind the heat pressing process, be cut to product;
Wherein, heat pressing process is:
Last central roll spacing: 2.5mm, the last roll temperature of up-down rollers spacing: 2.0mm: 150 ℃, following roll temperature: normal temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100467840A CN101492884B (en) | 2009-02-27 | 2009-02-27 | Dacron aculeus filtering felt surface coating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100467840A CN101492884B (en) | 2009-02-27 | 2009-02-27 | Dacron aculeus filtering felt surface coating process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101492884A CN101492884A (en) | 2009-07-29 |
| CN101492884B true CN101492884B (en) | 2012-04-18 |
Family
ID=40923669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100467840A Expired - Fee Related CN101492884B (en) | 2009-02-27 | 2009-02-27 | Dacron aculeus filtering felt surface coating process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101492884B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031693B (en) * | 2010-11-15 | 2012-07-25 | 山东新力环保材料有限公司 | Film forming agent used for after finishing of medium low temperature composite needled filter felt and preparation method thereof |
| CN105755823A (en) * | 2015-12-14 | 2016-07-13 | 安徽省元琛环保科技有限公司 | Method of PTFE (polytetrafluoroethylene) impregnation for filter material |
| CN106835501A (en) * | 2017-02-22 | 2017-06-13 | 常州天马集团有限公司（原建材二五三厂） | The preparation method of the synthetic fibers Nomex with diversion function |
| CN110373898A (en) * | 2019-06-28 | 2019-10-25 | 浙江工业大学 | A kind of tencel and fabric surface treatments maceration extract and application method |
-
2009
- 2009-02-27 CN CN2009100467840A patent/CN101492884B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101492884A (en) | 2009-07-29 |
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Granted publication date: 20120418 Termination date: 20180227 |
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