CN102408628A - Chitin-containing polymer master batch, air filtering net monofilament, its preparation method and application - Google Patents
Chitin-containing polymer master batch, air filtering net monofilament, its preparation method and application Download PDFInfo
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- CN102408628A CN102408628A CN2011102815643A CN201110281564A CN102408628A CN 102408628 A CN102408628 A CN 102408628A CN 2011102815643 A CN2011102815643 A CN 2011102815643A CN 201110281564 A CN201110281564 A CN 201110281564A CN 102408628 A CN102408628 A CN 102408628A
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Abstract
The invention relates to a chitin-containing polymer master batch and an air filtering net monofilament containing the polymer master batch. The polymer master batch comprises: (i) chitin powder; and (ii) a polymer. In the master batch, the chitin powder accounts for 2%-7% of the total weight of the master batch. The monofilament consists of: (1) a chitin-containing polymer master batch; and (2) a polymer material. Specifically, chitin-containing polymer master batch accounts for 10%-30% of the total weight of monofilament, which has a diameter of 0.1-0.5mm. The preparation method of the monofilament includes: mixing and stirring the chitin powder and the polymer, conducting melt extrusion and granulation, thus obtaining the chitin-containing polymer master batch; subjecting the obtained chitin-containing polymer master batch to the routine spinning methods of drying, mixing, stirring, melt extrusion, cooling, drafting, sizing, and rolling-up, etc. in order, thus obtaining the monofilament. The monofilament of the invention can be used for weaving a chitin air filtering net of an air filter, and has antibacterial, deodorizing and antistatic functions.
Description
Technical field
The present invention relates to a kind of polymer masterbatch that contains chitin, comprise the air filtration net filament of this polymer masterbatch.
Background technology
Chitin is that the nature biotechnology resultant quantity is only second to cellulosic natural polymer, has performances such as good antibacterial and deodouring function, the nursing function to skin, anti-static function, radiation-resisting functional.And chitin has excellent biological compatibility and biodegradability, is the environment-friendly materials of pure natural.Research of chitin at present and application are mainly in bio-medical and material for health care, environment-friendly novel material, foodstuff additive and fields such as chemical industry, light industry and textile auxiliary agent.In the air filter field, do not relate to as yet.
Summary of the invention
The purpose of this invention is to provide a kind of environmental protection, the air filtration net filament that has the polymer masterbatch of antibacterial and deodouring function and utilize this polymer masterbatch to make.
First aspect present invention provides a kind of polymer masterbatch that contains chitin, and said polymer masterbatch comprises:
(i) chitin;
(ii) polymkeric substance, said polymkeric substance are selected from least a in Vestolen PP 7052, Vilaterm, PS, polyester, the polymeric amide;
Wherein, the weight of said chitin accounts for 2%～7% of master batch gross weight.
On the other hand, the present invention provides a kind of air filtration net filament that contains chitin, and said monofilament comprises:
(1) the above-mentioned polymer masterbatch that contains chitin of the present invention;
(2) polymkeric substance, said polymkeric substance are selected from least a in Vestolen PP 7052, Vilaterm, PS, polyester, the polymeric amide;
Wherein, the said weight that contains the polymer masterbatch of chitin accounts for 10%～30% of whole monofilament weight; Said filament diameter is 0.1～0.5mm.
In a preferred embodiment, the polymkeric substance that comprises in the said polymer masterbatch is (ii) identical with the contained polymkeric substance (2) of said monofilament.More preferably be that the polymkeric substance that comprises in the said polymer masterbatch all is Vestolen PP 7052 with the contained polymkeric substance (2) of said monofilament (ii).
The present invention provides the preparation method of air filtration net filament according to the invention on the other hand, and it comprises the steps:
(a) chitin (i) and polymkeric substance are (ii) processed the polymer masterbatch that contains chitin through granulation process; Said polymkeric substance (ii) is selected from least a in Vestolen PP 7052, Vilaterm, PS, polyester, the polymeric amide, and the weight of said chitin accounts for 2%～7% of polymer masterbatch gross weight;
(b) will process the monofilament that diameter is 0.1～0.5mm through spinning technique by polymer masterbatch and polymkeric substance (2) that step (a) obtains, said polymkeric substance (2) is selected from least a in Vestolen PP 7052, Vilaterm, PS, polyester, the polymeric amide; The weight of said polymer masterbatch accounts for 10%～30% of whole monofilament weight.
In a preferred embodiment, said granulation process comprises mixing successively, stirs, melt extrudes and granulation; Said spinning technique comprises successively that baking is expected, mixes, stirs, melt extruded, cooling, drawing-off, typing and rolling.
Further aspect of the present invention provides the air filtration net filament to be woven into the application of airstrainer in air filter.Said air filter is installed in conditioner, air cleaner or the air freshener.
The polymer masterbatch that the present invention contains chitin not only has antibacterial and deodouring, absorb performance such as high radiation, pharmacological functions such as antiviral in addition, bacterial-infection resisting.The polymer masterbatch that the present invention is contained chitin is applied in the field of air filtration, can not only effectively improve IAQ, also can reduce the generation of many anaphylactic diseases, to purify air with HUMAN HEALTH active effect is arranged.
Embodiment
The present invention contains in the master batch of chitin, and the weight of chitin accounts for 2%～7% of master batch gross weight, if chitin weigh less than 2%, then the function of chitin performance is not obvious, antibiosis and deodorization effects is poor; If be higher than 7%, then chitin content is too much, causes the fragility of material to become big, and has increased cost.In a preferred embodiment of this invention, the weight of chitin preferably accounts for 3%～6% of master batch gross weight, and more preferably 4%～5%.
In addition, also can choose various other the conventional additives of adding in the said polymer masterbatch wantonly, be beneficial to the processing of polymer masterbatch or the performance of raising master batch.Said additive can be selected from following one or more: thinner, thermo-stabilizer and cooling masterbatch or the like.These additives can adopt this area conventional thinner and thermo-stabilizer.Said thinner can adopt whiteruss (also claiming white oil) etc.In the present invention, said thinner has the effect that improves the blending dispersion effect.Said thermo-stabilizer can adopt Zinic stearas (claim not only zinc octadecanate) and calcium stearate (but also claiming calcium stearate).In the present invention, said thermo-stabilizer can improve the thermostability of resin matrix, also has lubricated effect simultaneously.Said cooling masterbatch adopts conventional ditertiary butyl peroxide, and it can reduce spinning temperature, and improves spinning process.
The consumption of these additives is conventional amount used of this area.For example, the consumption of thinner can be 1～2 weight % of chitin.The consumption of thermo-stabilizer can be 1～1.5 weight % of chitin.The consumption of cooling masterbatch is the 1-3 weight % of chitin.
The present invention contains employed polymkeric substance in the master batch of chitin can be selected from least a in Vestolen PP 7052, Vilaterm, PS, polyester, the polymeric amide, optimization polypropylene.
Air filtration net filament of the present invention comprises polymer masterbatch and the polymer materials that contains chitin according to the invention, and the weight of said master batch accounts for 10%～30% of whole monofilament weight, and is preferred 10%～25%, and more preferably 15%～20%.If master batch content is lower than 10%, then antibiotic the and deodorization functions of monofilament is not enough, does not reach desired performance; If master batch content greater than 30%, then can reduce the intensity of monofilament, cost is also higher.Polymer materials in the said monofilament is selected from least a in Vestolen PP 7052, Vilaterm, PS, polyester, the polymeric amide.For the airstrainer in the air filter, preferably adopt Vestolen PP 7052.
In one of the present invention preferred embodiment, the polymer materials that monofilament comprised (2) is (ii) identical with polymkeric substance in the polymer masterbatch.Like this, (ii) consistency is good for the polymkeric substance in the polymer materials that is comprised in the monofilament (2) and the master batch, helps the processing of polymer filament, and the performance of monofilament homogeneous more.
In another preferred embodiment of the present invention, the polymkeric substance in polymer materials that monofilament comprised (2) and the master batch (ii) is Vestolen PP 7052, and this is because Vestolen PP 7052 is suitable for as the air filtration net materials in the air filter most.
The not special restriction of diameter that contains the monofilament of chitin of the present invention.Its diameter can be selected according to actual needs.The diameter of monofilament according to the invention is generally 0.1～0.5mm.When it is used for the airstrainer of air filter, the preferred 0.1～0.3mm of its diameter, preferred again 0.15～0.25mm.
Polymer masterbatch of the present invention adopts conventional granulation process to obtain: chitin powder and polymkeric substance according to desired ratio, are mixed, stir, melt extrude, granulation, process master batch of the present invention.
Polymer filament of the present invention also adopts conventional spinning technique to obtain: above-mentioned master batch particle and the polymer materials that makes dried by the fire material; And according to desired ratio; Mix, stir, then by forcing machine melt extrude, cooling, drawing-off, typing, rolling, process monofilament.
The preparation method of monofilament is described below in conjunction with concrete steps in sequence.
(1) baking material
The polymer raw material of spinning level is put into dryer with the polymer masterbatch that contains chitin dry, the not special restriction of baking material temperature.Adopt general baking material temperature to get final product.Should be noted that: temperature can not be too high, can not be low excessively.Too high meeting makes polymer raw material softening, is bonded to piece; Temperature is low excessively, and desiccation is not enough.Preferred 50～75 ℃ of baking material temperature, more preferably 60～65 ℃.
(2) mixing and stirring
Polymer masterbatch of the present invention and polymer materials (2) with needed part by weight, are added in the conventional stirrer and mix, and fully stir.
(3) melt extrude
Well-beaten batching is put into conventional forcing machine melt extrude monofilament after through preheating, fusing, plasticizing, spray wire process, extrusion temperature can adopt the conventional TR in this area.Preferred 150～250 ℃ of extrusion temperature.When extrusion temperature is lower than 150 ℃, extrude not smooth, the quality of monofilament with extrude output and be affected; When extrusion temperature is higher than 250 ℃, can make polymer degradation, the chitin carbonization influences the mechanical property of the monofilament course of processing and monofilament.Melt extrude preferred 175～245 ℃ of temperature, more preferably 195～225 ℃.
(4) cooling
The monofilament that will melt extrude is put into tank and is cooled off, and the tank cooling temperature is generally 10～40 ℃.When cooling temperature is lower than 10 ℃, can cause the monofilament crystallization inhomogeneous, poor mechanical property.When cooling temperature is higher than 40 ℃, can cause crystallization not enough, monofilament is softer, undercapacity.
Preferred 15～35 ℃ of cooling temperature, more preferably 20～30 ℃, most preferably 25 ℃.
(5) drawing-off
Cooled monofilament is put into drafting machine carry out drawing-off.Drawing temperature is generally 90～105 ℃, drafting multiple and is generally 5.0～6.5 times.
If drawing temperature is lower than 90 ℃, monofilament ruptures easily; If be higher than 105 ℃, polymkeric substance can soften, even local melting, is unfavorable for drawing-off.
Preferred 90～100 ℃ of drawing temperature, more preferably 97～98 ℃.
If drafting multiple is lower than 5.0, mechanical properties such as the intensity of monofilament are not enough, and elongation is bigger than normal.If drafting multiple is higher than 6.5, filament strength is then bigger than normal, but elongation is less than normal.
Drafting multiple is preferred 5.2～6.2, and more preferably 5.5～6.0, most preferably 5.8.
(6) typing
The monofilament of drawing-off is put into forming machine carry out heat setting type, preferred 90～110 ℃ of setting temperature, relaxation shrinkage preferred 0.2～1.0%.
When setting temperature was lower than 90 ℃, typing was not enough, and monofilament is easy deformation in use, and when setting temperature is higher than 110 ℃, monofilament can soften, even local melting, is unfavorable for typing.
Preferred 95～105 ℃ of setting temperature, more preferably 98～102 ℃.
If the relaxation shrinkage in the typing is greater than 1.0%, shrinking percentage is bigger than normal, and the area of the net of being processed by this monofilament so can dwindle, thus cost up.
Relaxation shrinkage preferred 0.4～0.8%.
(7) rolling
The monofilament of finalizing the design is batched on winder, and rolling tension force is generally 200cN～270cN, and rolling speed is generally 110 meters/minute～150 meters/minute.
If rolling tension force is lower than 200cN, tension force is too little so, the rolling difficulty of silk.If rolling tension force is higher than 270cN, tension force is too big so, and silk can produce and batch distortion.
Preferred 220cN～the 250cN of rolling tension force, more preferably 230cN～240cN.
Equally, rolling speed is lower than 110 meters/minute or be higher than 150 meters/minute, can make monofilament be woven into distortion in use behind the net.
Preferred 120 meters/minute～140 meters/minute of rolling speed.
In the present invention, the monofilament that makes is woven into airstrainer with conventional weaving method.
The present invention has been applied to the air filtration product scope with chitin, has improved existing monofilament fabricating technology, has obtained a kind of monofilament with performances such as antibacterial and deodouring and radioprotectives.Be woven into airstrainer with such monofilament, carry out air filtration in the antibacterial purifying air conditioning machinery of can packing into.This monofilament also can be used in the product that other requirement has the antibacterial and deodouring air cleaning function.
Monofilament is woven into airstrainer, and through test, filtering net has good mechanical performance, performance such as antibiotic; Satisfy the requirement of filtering net in the air filter fully; Its ultimate strength >=800cN, elongation at break are 18～25%, to intestinal bacteria, streptococcus aureus antibiotic rate＞90%.
Wherein, the ultimate strength of filtering net and elongation rate test are to carry out according to standard GB/T 3923.1-1997 " textile fabric tensile property-part 1: the mensuration galley proof method of ultimate strength and elongation at break ".Employed testing installation is " a fabric tension testing machine ".
In addition, filtering net is to carry out according to national sector standard QB/T 2591-2003 " antibiotic plastic bacterinertness TP and antibacterial effect " to the antibiotic rate test of intestinal bacteria, streptococcus aureus.Corresponding Nippon Standard JIS Z 2801:2000 of this standard and USS ASTM G 21:1996.The main test apparatus that uses comprises fixed temperature and humidity incubator, Photobiology microscope, pressure steam sterilizer etc.TP comprises quantitative inoculated bacteria on test sample, makes bacterium uniform contact sample with the method for pad pasting, through after the cultivation of certain hour, records the viable count in the sample, thereby calculates the antibiotic rate of sample.
Embodiment
Following examples are to further specify of the present invention, do not limit the scope of the invention.
Embodiment 1
Get an amount of chitin powder and Vestolen PP 7052, make chitin weight account for 3% of both gross weights, with two kinds of materials mix, stir, melt extrude, granulation, promptly process chitin polypropylene agglomerate of the present invention.
Get an amount of chitin polypropylene agglomerate and spinning grade polypropylene, make master batch weight account for 20% of both gross weights, baking was expected 3 hours under 65 ℃ of temperature respectively, above-mentioned materials is added in the stirrer mix then, and fully stir.
The compound that stirs is put into conventional forcing machine, under 200 ℃, melt extrude, and through the cooling tank cooling, cooling temperature is 25 ℃.
Cooled monofilament is put into drafting machine carry out drawing-off, drawing temperature is 100 ℃, and drafting multiple is 5.6 times.
The monofilament of drawing-off is put into forming machine carry out heat setting type, setting temperature is 100 ℃, and relaxation shrinkage is 0.6%.
The monofilament of finalizing the design is batched on winder, and rolling tension force is 235cN, and rolling speed is 135 meters/minute.
The filament diameter of processing is 0.20mm.
Monofilament is woven into airstrainer, and density is 15 pieces/centimetre of 15/cm x, and promptly warp-wise and broadwise have 15 rhizoids for every centimetre.Test result is: ultimate strength is 880cN, and elongation at break is 20%, and the intestinal bacteria antibiotic rate is 95%, and the streptococcus aureus antibiotic rate is 96%.
Embodiment 2
Get an amount of chitin powder and Vestolen PP 7052, make chitin weight account for 3.8% of both gross weights, with two kinds of materials mix, stir, melt extrude, granulation, promptly process chitin polypropylene agglomerate of the present invention.
Get an amount of chitin polypropylene agglomerate and spinning grade polypropylene, make master batch weight account for 23% of both gross weights, baking was expected 3 hours under 65 ℃ of temperature respectively, above-mentioned materials is added in the stirrer mix then, and fully stir.
The compound that stirs is put into conventional forcing machine, under 195 ℃, melt extrude, and through the cooling tank cooling, cooling temperature is 20 ℃.
Cooled monofilament is put into drafting machine carry out drawing-off, drawing temperature is 100 ℃, and drafting multiple is 5.8 times.
The monofilament of drawing-off is put into forming machine carry out heat setting type, setting temperature is 100 ℃, and relaxation shrinkage is 0.7%.
The monofilament of finalizing the design is batched on winder, and rolling tension force is 240cN, and rolling speed is 130 meters/minute.
The filament diameter of processing is 0.25mm.
Monofilament is woven into airstrainer, and density is 15 pieces/centimetre of 15/cm x, and promptly warp-wise and broadwise have 15 rhizoids for every centimetre.Test result is: ultimate strength is 950cN, and elongation at break is 18%, and the intestinal bacteria antibiotic rate is 96%, and the streptococcus aureus antibiotic rate is 98%.
Embodiment 3
Get an amount of chitin powder and Vestolen PP 7052, make chitin weight account for 4% of both gross weights, with two kinds of materials mix, stir, melt extrude, granulation, promptly process chitin polypropylene agglomerate of the present invention.
Get an amount of chitin polypropylene agglomerate and spinning grade polypropylene, make master batch weight account for 26% of both gross weights, baking was expected 3 hours under 65 ℃ of temperature respectively, above-mentioned materials is added in the stirrer mix then, and fully stir.
The compound that stirs is put into conventional forcing machine, under 210 ℃, melt extrude, and through the cooling tank cooling, cooling temperature is 30 ℃.
Cooled monofilament is put into drafting machine carry out drawing-off, drawing temperature is 100 ℃, and drafting multiple is 5.2 times.
The monofilament of drawing-off is put into forming machine carry out heat setting type, setting temperature is 100 ℃, and relaxation shrinkage is 0.5%.
The monofilament of finalizing the design is batched on winder, and rolling tension force is 250cN, and rolling speed is 140 meters/minute.
The filament diameter of processing is 0.30mm.
Monofilament is woven into airstrainer, and density is 15 pieces/centimetre of 15/cm x, and promptly warp-wise and broadwise have 15 rhizoids for every centimetre.Test result is: ultimate strength is 1050cN, and elongation at break is 23%, and the intestinal bacteria antibiotic rate is 97%, and the streptococcus aureus antibiotic rate is 99%.
Claims (8)
1. polymer masterbatch that contains chitin, said polymer masterbatch comprises:
(i) chitin;
(ii) polymkeric substance, said polymkeric substance are selected from least a in Vestolen PP 7052, Vilaterm, PS, polyester, the polymeric amide;
Wherein, the weight of said chitin accounts for 2%～7% of master batch gross weight.
2. air filtration net filament that contains chitin, said monofilament comprises:
(1) the described polymer masterbatch that contains chitin of claim 1;
(2) polymkeric substance, said polymkeric substance are selected from least a in Vestolen PP 7052, Vilaterm, PS, polyester, the polymeric amide;
Wherein, the said weight that contains the polymer masterbatch of chitin accounts for 10%～30% of whole monofilament weight; Said filament diameter is 0.1～0.5mm.
3. monofilament according to claim 2, wherein, the polymkeric substance that comprises in the said polymer masterbatch is (ii) identical with the contained polymkeric substance (2) of said monofilament.
4. monofilament according to claim 2, wherein, the polymkeric substance that comprises in the said polymer masterbatch all is Vestolen PP 7052 with the contained polymkeric substance (2) of said monofilament (ii).
5. the preparation method of each said monofilament of claim 2-4, it comprises the steps:
(a) chitin (i) and polymkeric substance are (ii) processed the described polymer masterbatch that contains chitin of claim 1 through granulation process; Said polymkeric substance (ii) is selected from least a in Vestolen PP 7052, Vilaterm, PS, polyester, the polymeric amide, and the weight of said chitin accounts for 2%～7% of polymer masterbatch gross weight;
(b) will process the monofilament that diameter is 0.1～0.5mm through spinning technique by polymer masterbatch and polymkeric substance (2) that step (a) obtains, said polymkeric substance (2) is selected from least a in Vestolen PP 7052, Vilaterm, PS, polyester, the polymeric amide; The weight of said polymer masterbatch accounts for 10%～30% of whole monofilament weight.
6. preparation method according to claim 5, wherein, said granulation process comprises mixing successively, stirs, melt extrudes and granulation; Said spinning technique comprises successively that baking is expected, mixes, stirs, melt extruded, cooling, drawing-off, typing and rolling.
7. each said monofilament of claim 2-4 is woven into the application of airstrainer in air filter.
8. application according to claim 7, wherein, said air filter is installed in conditioner, air cleaner or the air freshener.
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| CN103724969A (en) * | 2013-12-27 | 2014-04-16 | 吴江市东泰电力特种开关有限公司 | Antibacterial fluorescent PET/PC (Polyethylene Terephthalate/Polycarbonate) alloy and preparation method thereof |
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Application publication date: 20120411 |