CN109908662A - A kind of preparation method of non-metallic fibers hydrophobic type strainer - Google Patents
A kind of preparation method of non-metallic fibers hydrophobic type strainer Download PDFInfo
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- CN109908662A CN109908662A CN201810511415.3A CN201810511415A CN109908662A CN 109908662 A CN109908662 A CN 109908662A CN 201810511415 A CN201810511415 A CN 201810511415A CN 109908662 A CN109908662 A CN 109908662A
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Abstract
The invention discloses a kind of preparation methods of non-metallic fibers hydrophobic type strainer, belong to technical field of air purification.First with aqueous slkali, it is modified that maleic anhydride carries out surface to sisal fiber, wherein the main component of sisal fiber is cellulose, first with aqueous slkali to sisal fiber surface modification treatment, in addition the cellulose of sisal fiber is rich in-OH group, maleic anhydride is introduced thereto, carry out esterification, sisal fiber surface is further modified using stearic acid in the present invention, and stearic acid molecule is made to be dispersed in sisal fiber surface under the action of dimethylbenzene, form staggeredly coarse structure, and the addition self-control polylactic acid into substrate, wherein self-control polylactic acid itself has excellent biodegradable, and it is nontoxic, it is nonirritant, it in nature with microorganism, water, acid, it can be decomposed completely under the effects of alkali, final product is carbon dioxide and water, no pollution to the environment, to improve the biodegradable of strainer , it is with a wide range of applications.
Description
Technical field
The invention discloses a kind of preparation methods of non-metallic fibers hydrophobic type strainer, belong to technical field of air purification.
Background technique
Currently, air pollution already becomes the problem of public common concern, a variety of different types and shape are produced in the market
The air clearing product of formula.In air filting material, main active charcoal, HEPA high efficiency particulate air, ultraviolet light.Although active carbon
Can efficient absorption organic gas, HEPA filter screen can remove 99.7% and be greater than 0.3 micron of fine particle, but these materials
Material has a single function, and has respective limitation.The big quantity space of air purifier can be occupied by combining.So developing a kind of multiple
It closes filtering fine particle and elimination organic gas functional material is significant.
The core component of these air clearing products is the purifying filter element for playing catharsis, is filtered for different purifications
Net, purifying filter element are to reach volatility in removal air by react after internal scavenging material and air contact
The purpose of hazardous air pollutants realizes the function of purification air.However, strainer design is got over during this purification
Intensively, contained scavenging material is more, and the efficiency for purifying air is higher, but when contained scavenging material is more, it should
The windage of strainer is bigger, is unfavorable for the operation of air purifier, causes the reduction of its treatment effeciency.
Air purifying filter mesh currently on the market mainly takes packing type or bonded strainer, wherein packing type strainer is
Purification particle after granulation is filled into purification strainer, the purification particle that this strainer includes is more, however due in strainer
Portion is supported without other, and accumulation reduces its contact area with air mutually between particle, its purification efficiency is caused to be difficult to
It improves；Bonded strainer is by scavenging material powder by adhesive bond to screen surface, and the load of scavenging material measures
Certainly in the aperture of strainer, the scavenging material amount of overall load is simultaneously few, it is difficult to reach optimal clean-up effect, and use
In the process, the powder scavenging material on surface is easy to fall off, and there are security risks in use process.In scavenging material, at present
Based on polypropylene, material easily crystallizes in strainer hole plain gauze, causes strainer pore plugging, simultaneously because its polypropylene
Material wears no resistance, and service life is not grown, and biological degradability is poor.Therefore, a kind of non-metallic fibers hydrophobic type strainer pair is invented
Technical field of air purification has positive effect.
Summary of the invention
The technical problems to be solved by the invention: for current plain gauze based on polypropylene, material is easily in opening of sieve
It is crystallized in gap, causes strainer pore plugging, simultaneously because its polypropylene material wears no resistance, reliable service life is not grown, complete
The requirement of industry production is not achieved entirely, in addition its that there are biological degradabilities is poor, can not meet the defect of market demands, provide one
The preparation method of kind non-metallic fibers hydrophobic type strainer.
In order to solve the above technical problems, the present invention is using technical solution as described below:
A kind of preparation method of non-metallic fibers hydrophobic type strainer, it is characterised in that specific preparation step are as follows:
(1) sisal fiber and sodium hydroxide solution are mixed into immersion treatment, obtains impregnating sisal fiber, then by maleic anhydride, two
Toluene, stearic acid and deionized water are mixed, and obtain self-control modification liquid；
(2) self-control modification liquid is mixed with sisal fiber is impregnated, and be stirred to react, obtained esterification sisal fiber, use deionized water
Esterification sisal fiber after washing, is finally placed in baking oven dry, cooling discharging by washing esterification sisal fiber, obtains modified sword
Flaxen fiber；
(3) it weighs 120~125g potato to grind, obtains potato powder, then potato powder and Yoghourt are mixed and pour into fermentation
It in tank, is sealed by fermentation, filtering removal filter residue obtains filtrate, and the sulfuric acid solution of filtrate volume 3% is added into filtrate, continues
Mixing reaction is self-control lactic acid after filtering, will finally make lactic acid, dehydrated alcohol and hydrogen peroxide mixing polycondensation reaction by oneself,
Cooling discharging obtains self-control polylactic acid；
(4) according to parts by weight, weigh respectively 35~40 parts of modified sisal fibers, 16~20 parts of self-control polylactic acid, 6~8 parts it is poly-
Perfluoroethylene-propylene (copolymer) lotion, 4~6 parts of deionized waters and 2~4 parts of dehydrated alcohol mixings are placed in blender, are 210 in revolving speed
It is stirred under conditions of~240r/min, obtains mixture, then mixture is poured into knitting forming in braider, draw take-up, obtain
To strainer crude product, continue for strainer crude product to be placed in drying in baking oven, sizing discharging is to get non-metallic fibers hydrophobic type strainer.
The mass ratio for the sodium hydroxide solution that sisal fiber described in step (1) and mass fraction are 18% is 1:5, is impregnated
The processing time is 1~2h, maleic anhydride, dimethylbenzene, stearic acid and deionized water mass ratio be 5:2:1:2, when mixing
Between be 12~15min.
Self-control modification liquid described in step (2) and the mass ratio for impregnating sisal fiber are 1:4, and being stirred to react temperature is 136
~142 DEG C, being stirred to react the time is 1~2h, and washing times are 3~5 times, and drying temperature is 90~95 DEG C, drying time 35
~45min.
The time is ground described in step (3) as 10~12min, the mass ratio of potato powder and Yoghourt is 12:1, hair
Ferment temperature is 35~45 DEG C, and fermentation time is 9~11 days, and the mass fraction of sulfuric acid solution is 32%, continues to be stirred to react the time
For 15~18min, lactic acid is made by oneself, the mass ratio for the hydrogen peroxide that dehydrated alcohol and mass fraction are 30% is 5:1:2, polycondensation reaction
Temperature is 45~50 DEG C, and polycondensation reaction time is 1~2h.
Mixing time described in step (4) is 35~45min, and braiding temperature is 120~160 DEG C, and braiding power is 0.75
~0.85kW, drying temperature are 85~90 DEG C, and drying time is 1~2h.
The present invention is compared with other methods, and advantageous effects are:
(1) present invention makes polylactic acid by oneself as promotor using sisal fiber as substrate, and is aided with perfluoroethylene-propylene emulsion and nothing
Non-metallic fibers hydrophobic type strainer is prepared in water-ethanol etc., carries out table to sisal fiber first with aqueous slkali, maleic anhydride
Face is modified, and wherein the main component of sisal fiber is cellulose, modified first with aqueous slkali to sisal fiber surface modification treatment
The crystallinity of its cellulose is promoted to improve afterwards, the wearability for being conducive to sisal fiber is improved, while making the table of sisal fiber
Area is increased, and is also increased filler and the adhesion area on sisal fiber surface, to improve filler and sisal fiber
Boundary strength, the wearability for being conducive to strainer is improved, and in addition the cellulose of sisal fiber is rich in-OH group, thereto
Maleic anhydride is introduced, esterification is carried out, maleic anhydride is grafted to sisal fiber surface, so that sisal fiber surface has
Double bond group can be reacted by double bond and self-control polylactic acid, improved sisal fiber and made the interface between polylactic acid by oneself
Adhesiveness, so that sisal fiber surface becomes coarse, to improve the wearability of strainer；
(2) sisal fiber surface is further modified using stearic acid in the present invention, and makes tristearin under the action of dimethylbenzene
Acid molecule is dispersed in sisal fiber surface, forms staggeredly coarse structure, while stearic nonpolar moiety is outwardly, from
And good hydrophobic surface is formed, be conducive to the anti-crystallization of strainer, continue potato and Yoghourt mixed fermentation, by itself and sulfuric acid
Solution, dehydrated alcohol and hydrogen peroxide hybrid reaction obtain self-control polylactic acid, and the addition self-control polylactic acid into substrate, wherein making by oneself
Polylactic acid itself has excellent biodegradable, and nontoxic, nonirritant, it in nature with microorganism, water,
It can be decomposed completely under the effects of acid, alkali, final product is carbon dioxide and water, no pollution to the environment, so that improves strainer can
Biological degradability is with a wide range of applications.
Specific embodiment
By the sodium hydroxide solution that sisal fiber and mass fraction are 18% be in mass ratio 1:5 mix immersion treatment 1~
2h, obtain impregnate sisal fiber, then by maleic anhydride, dimethylbenzene, stearic acid and deionized water be in mass ratio 5:2:1:2 mix
12~15min is stirred, self-control modification liquid is obtained；Modification liquid will be made by oneself for 1:4 in mass ratio and will impregnate sisal fiber mixing, and
Temperature is stirred to react 1~2h under conditions of being 136~142 DEG C, obtains esterification sisal fiber, and esterification sisal hemp is washed with deionized
Fiber 3~5 times, finally the esterification sisal fiber after washing is placed in baking oven, it is dry under conditions of temperature is 90~95 DEG C
35~45min, cooling discharging obtain modified sisal fiber；It weighs 120~125g potato and grinds 10~12min, obtain soil
Bean powder end, then by potato powder and Yoghourt be in mass ratio 12:1 mix pour into fermentor, temperature be 35~45 DEG C at it is close
Seal ferment 9~11 days, filtering removal filter residue obtained filtrate, and it is 32% that the mass fraction of filtrate volume 3%, which is added, into filtrate
Sulfuric acid solution, continues to mix and be stirred to react 15~18min, after filtering be self-control lactic acid, finally will make by oneself lactic acid, anhydrous second
The hydrogen peroxide that pure and mild mass fraction is 30% is 5:1:2 mixing in mass ratio, and polycondensation is anti-under conditions of temperature is 45~50 DEG C
1~2h is answered, cooling discharging obtains self-control polylactic acid；According to parts by weight, 35~40 parts of modified sisal fibers, 16 are weighed respectively
~20 parts of self-control polylactic acid, 6~8 parts of perfluoroethylene-propylene emulsions, 4~6 parts of deionized waters and 2~4 parts of dehydrated alcohol mixing are stirred
It mixes and is placed in blender, 35~45min is stirred under conditions of revolving speed is 210~240r/min, obtain mixture, then will mixing
Material pours into braider, knitting forming under conditions of temperature is 120~160 DEG C, power is 0.75~0.85kW, and traction is received
Line obtains strainer crude product, continues for strainer crude product to be placed in baking oven, and dry 1~2h, fixed under conditions of temperature is 85~90 DEG C
Type discharges to get non-metallic fibers hydrophobic type strainer.
It is in mass ratio that 1:5 mixes immersion treatment 1h by the sodium hydroxide solution that sisal fiber and mass fraction are 18%,
Obtain impregnate sisal fiber, then by maleic anhydride, dimethylbenzene, stearic acid and deionized water be in mass ratio 5:2:1:2 mix stir
12min is mixed, self-control modification liquid is obtained；Modification liquid will be made by oneself for 1:4 in mass ratio and impregnates sisal fiber mixing, and be in temperature
It is stirred to react 1h under conditions of 136 DEG C, esterification sisal fiber is obtained, esterification sisal fiber 3 times is washed with deionized, finally will
Esterification sisal fiber after washing is placed in baking oven, and dry 35min, cooling discharging are changed under the conditions of at a temperature of 90 °C
Property sisal fiber；It weighs 120g potato and grinds 10min, obtain potato powder, then in mass ratio by potato powder and Yoghourt
It pours into fermentor for 12:1 mixing, is sealed by fermentation 9 days at being 35 DEG C in temperature, filtering removes filter residue, obtains filtrate, and to filter
The sulfuric acid solution that the mass fraction of filtrate volume 3% is 32% is added in liquid, continuess to mix and is stirred to react 15min, after filtering i.e.
It is in mass ratio finally that 5:1:2 is mixed by the hydrogen peroxide for making lactic acid by oneself, dehydrated alcohol and mass fraction are 30% to make lactic acid by oneself
It closes, polycondensation reaction 1h under conditions of temperature is 45 DEG C, cooling discharging, obtains self-control polylactic acid；According to parts by weight, claim respectively
Take 35 parts of modified sisal fibers, 16 parts of self-control polylactic acid, 6 parts of perfluoroethylene-propylene emulsions, 4 parts of deionized waters and 2 parts of anhydrous second
Alcohol mixing is placed in blender, stirs 35min under conditions of revolving speed is 210r/min, obtains mixture, then will mixing
Material pours into braider, knitting forming under conditions of temperature is 120 DEG C, power is 0.75kW, draws take-up, it is thick to obtain strainer
Product continue for strainer crude product to be placed in baking oven, and dry 1h under conditions of temperature is 85 DEG C, sizing discharging is to get nonmetallic fibre
Tie up hydrophobic type strainer.
It is in mass ratio that 1:5 mixes immersion treatment by the sodium hydroxide solution that sisal fiber and mass fraction are 18%
1.5h is obtained impregnating sisal fiber, then maleic anhydride, dimethylbenzene, stearic acid and deionized water is mixed in mass ratio for 5:2:1:2
Stirring 14min is closed, self-control modification liquid is obtained；Modification liquid will be made by oneself for 1:4 in mass ratio and impregnates sisal fiber mixing, and in temperature
Degree is stirred to react 1.5h under conditions of being 140 DEG C, obtains esterification sisal fiber, esterification sisal fiber 4 times is washed with deionized,
Finally the esterification sisal fiber after washing is placed in baking oven, dry 40min under conditions of temperature is 92 DEG C, cooling discharging,
Obtain modified sisal fiber；It weighs 122g potato and grinds 11min, obtain potato powder, then potato powder and Yoghourt are pressed
Mass ratio is that 12:1 mixing is poured into fermentor, is sealed by fermentation 10 days at being 40 DEG C in temperature, and filtering removal filter residue is filtered
Liquid, and the sulfuric acid solution that the mass fraction of filtrate volume 3% is 32% is added into filtrate, it continuess to mix and is stirred to react 17min,
It is self-control lactic acid after filtering, is finally in mass ratio by the hydrogen peroxide for making lactic acid by oneself, dehydrated alcohol and mass fraction are 30%
5:1:2 mixing, polycondensation reaction 1.5h under conditions of temperature is 47 DEG C, cooling discharging obtain self-control polylactic acid；In parts by weight
Meter, weighs 37 parts of modified sisal fibers, 18 parts of self-control polylactic acid, 7 parts of perfluoroethylene-propylene emulsions, 5 parts of deionized waters and 3 respectively
Part dehydrated alcohol mixing is placed in blender, is stirred 40min under conditions of revolving speed is 230r/min, is obtained mixture,
Mixture is poured into braider again, knitting forming under conditions of temperature is 140 DEG C, power is 0.8kW, draws take-up, obtain
To strainer crude product, continue for strainer crude product to be placed in baking oven, dry 1.5h under conditions of temperature is 87 DEG C, sizing discharging, i.e.,
Obtain non-metallic fibers hydrophobic type strainer.
It is in mass ratio that 1:5 mixes immersion treatment 2h by the sodium hydroxide solution that sisal fiber and mass fraction are 18%,
Obtain impregnate sisal fiber, then by maleic anhydride, dimethylbenzene, stearic acid and deionized water be in mass ratio 5:2:1:2 mix stir
15min is mixed, self-control modification liquid is obtained；Modification liquid will be made by oneself for 1:4 in mass ratio and impregnates sisal fiber mixing, and be in temperature
It is stirred to react 2h under conditions of 142 DEG C, esterification sisal fiber is obtained, esterification sisal fiber 5 times is washed with deionized, finally will
Esterification sisal fiber after washing is placed in baking oven, and dry 45min, cooling discharging are changed under conditions of temperature is 95 DEG C
Property sisal fiber；It weighs 125g potato and grinds 12min, obtain potato powder, then in mass ratio by potato powder and Yoghourt
It pours into fermentor for 12:1 mixing, is sealed by fermentation 11 days at being 45 DEG C in temperature, filtering removes filter residue, obtain filtrate, and to
The sulfuric acid solution that the mass fraction of filtrate volume 3% is 32% is added in filtrate, continuess to mix and is stirred to react 18min, after filtering
It as makes lactic acid by oneself, is in mass ratio finally that 5:1:2 is mixed by the hydrogen peroxide for making lactic acid by oneself, dehydrated alcohol and mass fraction are 30%
It closes, polycondensation reaction 2h under conditions of temperature is 50 DEG C, cooling discharging, obtains self-control polylactic acid；According to parts by weight, claim respectively
Take 40 parts of modified sisal fibers, 20 parts of self-control polylactic acid, 8 parts of perfluoroethylene-propylene emulsions, 6 parts of deionized waters and 4 parts of anhydrous second
Alcohol mixing is placed in blender, stirs 45min under conditions of revolving speed is 240r/min, obtains mixture, then will mixing
Material pours into braider, knitting forming under conditions of temperature is 160 DEG C, power is 0.85kW, draws take-up, it is thick to obtain strainer
Product continue for strainer crude product to be placed in baking oven, and dry 2h under the conditions of at a temperature of 90 °C, sizing discharging is to get nonmetallic fibre
Tie up hydrophobic type strainer.
The non-metallic fibers hydrophobic type strainer that comparative example is produced with Changzhou company is as a comparison case to produced by the present invention
Non-metallic fibers hydrophobic type strainer in non-metallic fibers hydrophobic type strainer and comparative example carries out performance detection, testing result such as table
Shown in 1:
(1) hydrophobicity:
Test equipment: contact angle measurement, 0.01 ° of measuring resolution, 0.1 ° of measuring accuracy
Technical indicator: it is hydrophobic surface that surface of solids water contact angle, which is greater than 90 °,.
Wearability detection: estimate equipment: cloth abrasion instrument, grain size number are the grinding wheel of 100#, load 1000cN.
Strainer (having a size of 10mm × 20mm) in example 1~3 and comparative example is put into 50ml concentration and is by degradability detection
In 0.2mol/L methyl orange solution, under 500W high voltage mercury lamp radiation, methyl orange solution of degrading measures degradation time.
1 strainer performance measurement result of table
| Test item | Example 1 | Example 2 | Example 3 | Comparative example |
| Contact angle (degree) | 116 | 118 | 120 | 78 |
| Mass area ratio (g/m2) | 300 | 301 | 302 | 335 |
| Abrasion quality (g/m under 10000 turns2) | 19.9 | 20.0 | 20.1 | 52.4 |
| Abrasion quality accounts for mass area ratio ratio % | 6.6 | 6.6 | 6.6 | 15.6 |
| Degradation time (min) | 38 | 37 | 35 | 70 |
It is greater than according to the surface of solids water contact angle of the non-metallic fibers hydrophobic type strainer produced by the present invention of data among the above
90 °, be hydrophobic surface, and material is not easy to be attached to the effect for playing resistive connection crystalline substance above, and opening of sieve gap is not easily caused to block, mill
Damage degree is low compared with the strainer of comparative example, i.e., wearability is good, and degradation speed is fast, and degradability is good, has broad application prospects.
Claims (5)
1. a kind of preparation method of non-metallic fibers hydrophobic type strainer, it is characterised in that specific preparation step are as follows:
(1) sisal fiber and sodium hydroxide solution are mixed into immersion treatment, obtains impregnating sisal fiber, then by maleic anhydride, two
Toluene, stearic acid and deionized water are mixed, and obtain self-control modification liquid；
(2) self-control modification liquid is mixed with sisal fiber is impregnated, and be stirred to react, obtained esterification sisal fiber, use deionized water
Esterification sisal fiber after washing, is finally placed in baking oven dry, cooling discharging by washing esterification sisal fiber, obtains modified sword
Flaxen fiber；
(3) it weighs 120~125g potato to grind, obtains potato powder, then potato powder and Yoghourt are mixed and pour into fermentation
It in tank, is sealed by fermentation, filtering removal filter residue obtains filtrate, and the sulfuric acid solution of filtrate volume 3% is added into filtrate, continues
Mixing reaction is self-control lactic acid after filtering, will finally make lactic acid, dehydrated alcohol and hydrogen peroxide mixing polycondensation reaction by oneself,
Cooling discharging obtains self-control polylactic acid；
(4) according to parts by weight, weigh respectively 35~40 parts of modified sisal fibers, 16~20 parts of self-control polylactic acid, 6~8 parts it is poly-
Perfluoroethylene-propylene (copolymer) lotion, 4~6 parts of deionized waters and 2~4 parts of dehydrated alcohol mixings are placed in blender, are 210 in revolving speed
It is stirred under conditions of~240r/min, obtains mixture, then mixture is poured into knitting forming in braider, draw take-up, obtain
To strainer crude product, continue for strainer crude product to be placed in drying in baking oven, sizing discharging is to get non-metallic fibers hydrophobic type strainer.
2. a kind of preparation method of non-metallic fibers hydrophobic type strainer according to claim 1, it is characterised in that:
The mass ratio for the sodium hydroxide solution that sisal fiber described in step (1) and mass fraction are 18% is 1:5, immersion treatment
Time is 1~2h, maleic anhydride, dimethylbenzene, stearic acid and deionized water mass ratio be 5:2:1:2, mixing time is
12~15min.
3. a kind of preparation method of non-metallic fibers hydrophobic type strainer according to claim 1, it is characterised in that:
Self-control modification liquid described in step (2) and the mass ratio for impregnating sisal fiber are 1:4, and being stirred to react temperature is 136~142
DEG C, be stirred to react the time be 1~2h, washing times be 3~5 times, drying temperature be 90~95 DEG C, drying time be 35~
45min。
4. a kind of preparation method of non-metallic fibers hydrophobic type strainer according to claim 1, it is characterised in that:
The time is ground described in step (3) as 10~12min, the mass ratio of potato powder and Yoghourt is 12:1, fermentation temperature
Degree is 35~45 DEG C, and fermentation time is 9~11 days, and the mass fraction of sulfuric acid solution is 32%, and continuing to be stirred to react the time is 15
The mass ratio of~18min, the hydrogen peroxide that self-control lactic acid, dehydrated alcohol and mass fraction are 30% are 5:1:2, polycondensation reaction temperature
It is 45~50 DEG C, polycondensation reaction time is 1~2h.
5. a kind of preparation method of non-metallic fibers hydrophobic type strainer according to claim 1, it is characterised in that:
Mixing time described in step (4) be 35~45min, braiding temperature be 120~160 DEG C, braiding power be 0.75~
0.85kW, drying temperature are 85~90 DEG C, and drying time is 1~2h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111561030A (en) * | 2020-05-18 | 2020-08-21 | 河北宝峰商贸有限公司 | Corn fiber kitchen filter screen |
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| CN101884878A (en) * | 2010-08-18 | 2010-11-17 | 天津工业大学 | Hollow fiber porous membrane in perfluoro polymer and preparation method thereof |
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| CN111561030A (en) * | 2020-05-18 | 2020-08-21 | 河北宝峰商贸有限公司 | Corn fiber kitchen filter screen |
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