CN101570901B - Chemical fiber with high optical shielding - Google Patents
Chemical fiber with high optical shielding Download PDFInfo
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- CN101570901B CN101570901B CN2009100969974A CN200910096997A CN101570901B CN 101570901 B CN101570901 B CN 101570901B CN 2009100969974 A CN2009100969974 A CN 2009100969974A CN 200910096997 A CN200910096997 A CN 200910096997A CN 101570901 B CN101570901 B CN 101570901B
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Abstract
The invention provides a fiber with high optical shielding, which has a sheath-core structure and adds TiO2 in the fiber; wherein a sheath layer and a core in the sheath-core structure are made of different high molecular polymer materials; the TiO2 is only added in the sheath layer; while metallic silicon is added in the core layer. Compared with the prior art, the fiber in the invention has large internal reflected light absorbing effect and high refractivity, and leads the made textile to have good visual shielding effect in visible light waveband and be capable of preventing perspective camera shooting in near infrared waveband. The fiber adopts the sheath-core structure in the true sense, the core layer can improve the content of an opacifier of the metallic silicon so as to achieve the visual shielding function meeting the requirements; and the sheath layer adopts TiO2 with lower content, thus preventing the problem of frictional wear of the processing equipment.
Description
Technical field
What technical field the present invention relates to is a kind of chemical fibre of high optical shielding, especially for the garment material fiber that the shading requirement is arranged, belongs to the technical field of used additives manufacturing artificial filament in the weaving.
Background technology
The covering property of optics of background technology clothes clothes lining has very big relation for the serious and clothing color of dress abundant, easily exposes underwear and body during as covering property of summer clothes material optics difference, and easier exposure health was quite very not dignified, refined after swimming suit was drowning.Therefore, for clothes, wish to adopt the material with good optical screening effect, promptly garment material is will possess the performance that visually will intercept light at least.In addition, began in the society in recent years to occur not having the indecent behavior that my good man scholar adopts infrared camera to take exposure of person's photograph across clothes in summer, and, also required to have technically the dress materials of anti-near-infrared perspective shooting to use for the consumer to this.
The vision screening effect of clothes is relevant with color, thickness, the coverage coefficient of garment material, if promptly select for use its light-proofness of lining of dark color, big thickness and high coverage rate all right.But season, weather conditions and occupation require these parameters of clothes are had the selection of basic fixed, and being not easy has big variation for improving covering property of vision.For example naval's summer uniform, customs's uniform adopt white lining by international practice, can not change other colors in order to take into account covering property of vision; For improving screening performance lining thickening encryption also is unfavorable for snugness of fit.Therefore, effectively improve the vision screening effect and the shooting of anti-infrared camera perspective of clothes, have this approach of optics screening performance that improves fiber only.
The approach of the optics screening performance of existing raising fiber comprises: (1) adopts opacifier co-blended spinning, degree of deflection, the increase reflection approach of employing interface composite construction as much as possible to increase incident ray of high index of refraction, absorbs the incident light-wave energy in reflection approach as much as possible; (2) on the basis that does not influence the final finished fibre whiteness, adopt the high coloured powder of light wave absorptivity at unexposed interior zone as far as possible, to increase absorption to incident light wave.The white summer uniform lining of naval equipment has adopted with conventional delustering agent TiO in changing the outfit in 2007 as the Chinese People's Liberation Army
2For the core-sheath composite structure vision of opacifier is covered fiber.Because TiO
2The opacifier too high levels can influence spinnability, so this technology has reached the limit of spinnability under the addition about 7%, be that its shielding efficiency that can reach has also reached the limit, and in fact this addition screening performance that can reach reach far away and require.Secondly this technology mediopellis has adopted identical macromolecular material with sandwich layer, and promptly the optical property of cortex and core structure is consistent, so in fact do not reach the practical function of skin-core structure.
Summary of the invention
Summary of the invention is at above-mentioned deficiency, and technical problem to be solved by this invention is how to improve the screening effect that fiber can reach under the limited restriction situation of addition, thereby proposes a kind of chemical fibre of high optical shielding.
The chemical fibre of high optical shielding provided by the invention has skin-core structure and be added with TiO in fiber
2, the cortex in the wherein said skin-core structure is to make said TiO with different high molecular polymerization raw materials with sandwich layer
2Only be added in the cortex, and in sandwich layer, be added with metallic silicon.
The refractive index of metallic silicon (also claim industrial silicon, silicon metal, be high purity silicon) is 3.2～3.5, and it keeps high index near infrared band, metallic silicon is added on sandwich layer after, make incident light wave realize at the fiber sandwich layer that frequent internal reflection causes at high proportion and absorb.Adopt TiO simultaneously
2Powder is the fibrocortex opacifier, makes it to cover the tone of gray of sandwich layer silicon, and reduces the fretting wear of fiber to following process equipment.More make cortex and sandwich layer increase refraction effect with different high molecular polymers.Compared with prior art, fiber provided by the invention has very big reflects light assimilation effect, high refractive index, makes the textiles of making have good vision screening effect, can prevent the shooting of near infrared camera perspective near infrared band at visible light wave range.Fiber of the present invention has adopted skin-core structure truly, and sandwich layer can improve metallic silicon opacifier content, reaches the vision shielding function that meets the demands; Cortex adopts the TiO of lower content
2, prevented the fretting wear problem of process equipment.
The material of said cortex and sandwich layer is respectively any two kinds cooperation among PET or PTT or PA or the PBT.
It is in 3～9% of gross weight that silicon in the said sandwich layer adds weight, TiO in the cortex
2Adding weight is in 1～4% of gross weight.
The purity of said metallic silicon is more than 98%, and granularity is below 300nm, and refractive index is 3.3～3.5.Said TiO
2Be rutile-type, granularity is below 200nm, and refractive index is 2.6～2.9.
The chemical fibre of high optical shielding provided by the invention, the monofilament section that constitutes cortex and/or sandwich layer is polygonal, limit number identical or inequality is arranged between cortex and the sandwich layer, further enlarge cortex and sandwich layer boundary reflection effect to utilize complicated interface to increase the reflection chance.
Said polygon is regular polygon or just polygonal star normally, and the limit number of regular polygon or just polygonal star is 6～12, and shape forms with common drawing process by regular polygon or just polygonal star spray silk nib.
The chemical fibre of high optical shielding provided by the invention, the section ratio of said sandwich layer and cortex are 25～40: 60～75, are good with 35: 65.
Description of drawings
Accompanying drawing is one embodiment of the invention cross-section photograph, can obviously see the hexagram of section for constituting with 12 limits of its every silk fiber.
The specific embodiment
Below by embodiment the present invention is carried out concrete description, be necessary to be pointed out that at this present embodiment only is used for the present invention is further detailed, can not be interpreted as limiting the scope of the invention.
Sandwich layer:
Fibre-forming material: PA
Metallic silicon: purity: 99%, granularity: d
50=0.23 μ m
Consumption: 7% (mass ratio)
35 strands of monofilament ropes are made in blend
Cortex:
Fibre-forming material: PET
TiO
2: rutile-type, granularity: d
50=0.12 μ m
Consumption: 3% (mass ratio)
65 strands of monofilament ropes are made in blend
Cortex and sandwich layer through roller feeding, drawing-off, false twisting, HEAT SETTING, core-skin composite network, oil, be spun into fiber after the package.
The fibre section: core-skin composite fiber integral body is the circular section, and the cross section that constitutes the monofilament of cortex and sandwich layer is the positive hexagram on 12 limits.
The gained core-skin composite fiber on composite spinning machine, spin POY, and through adding bullet processing (wherein the one-tenth silk specification of DTY is 345dtex/144f).To obtain quality be 190g/m through weaving dyeing and finishing processing again
2The anti-printing opacity lining of white.
Contrast test: under the D65 light source more than the illumination 400lx, the anti-printing opacity fabric of this white lies in the GB/T 250 evaluation variable colors of amplification with on the one-level standards of chromatic aberration colour atla in the ash card, contrast GB/T250-1995 standard, the ash card aberration of observing through fabric manifested reaches 4～5 grades of aberration, object by its covering, substantially can not find out has color distortion, illustrates to have good covering performance.In contrast, all adopt TiO
2For the anti-printing opacity lining of the same size of opacifier, under identical evaluation method, can only reach 3～4 grades of aberration, promptly its covering property is relatively poor.
Claims (8)
1. the chemical fibre of a high optical shielding has skin-core structure and be added with TiO in fiber
2, it is characterized in that the cortex in the said skin-core structure is to make said TiO with different high molecular polymerization raw materials with sandwich layer
2Only be added in the cortex, and in sandwich layer, be added with metallic silicon.
2. the chemical fibre of high optical shielding as claimed in claim 1, the material that it is characterized in that said cortex and sandwich layer is any two kinds cooperation among PET or PTT or PA or the PBT, and the material of cortex and sandwich layer is inequality.
3. the chemical fibre of high optical shielding as claimed in claim 1 is characterized in that metallic silicon interpolation weight is in 3～9% of sandwich layer gross weight in the said sandwich layer, TiO in the cortex
2Adding weight is in 1～4% of cortex gross weight.
4. as the chemical fibre of claim 1 or 3 described high optical shieldings, more than 98%, granularity is below 300nm at mass ratio for the purity that it is characterized in that said metallic silicon, and refractive index is 3.3～3.5; Said TiO
2Be rutile-type, granularity is below 200nm, and refractive index is 2.6～2.9.
5. the chemical fibre of high optical shielding as claimed in claim 1, the monofilament section that it is characterized in that constituting cortex and/or sandwich layer is a polygon, and limit number identical or inequality is arranged between cortex and the sandwich layer.
6. the chemical fibre of high optical shielding as claimed in claim 5, it is characterized in that said polygon normally regular polygon or just polygonal star, the limit number of regular polygon or just polygonal star is 6～12, and shape forms with common drawing process by regular polygon or just polygonal star spray silk nib.
7. the chemical fibre of high optical shielding as claimed in claim 1, the sectional area ratio that it is characterized in that said cortex and sandwich layer is 25～40: 60～75.
8. the chemical fibre of high optical shielding as claimed in claim 7, the sectional area ratio that it is characterized in that said cortex and sandwich layer is 35: 65.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100969974A CN101570901B (en) | 2009-03-24 | 2009-03-24 | Chemical fiber with high optical shielding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100969974A CN101570901B (en) | 2009-03-24 | 2009-03-24 | Chemical fiber with high optical shielding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101570901A CN101570901A (en) | 2009-11-04 |
| CN101570901B true CN101570901B (en) | 2011-01-26 |
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ID=41230378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100969974A Active CN101570901B (en) | 2009-03-24 | 2009-03-24 | Chemical fiber with high optical shielding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101570901B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534861B (en) * | 2010-12-10 | 2014-04-02 | 海宁新高纤维有限公司 | High-optical shading parallel composite elastic fiber |
| WO2013111661A1 (en) * | 2012-01-27 | 2013-08-01 | 株式会社クラレ | Polyester composite fiber with excellent heat-shielding property and coloration |
| CN105155084B (en) * | 2015-06-01 | 2018-04-06 | 吴江市海成纺织有限公司 | A kind of super insulation perspective fabric and preparation method thereof |
| CN107779988A (en) * | 2017-09-28 | 2018-03-09 | 山东圣泉新材料股份有限公司 | A kind of fiber, preparation method and the purposes of anti-near infrared ray transmittance |
| CN110637114A (en) * | 2017-11-10 | 2019-12-31 | 东丽纤维研究所（中国）有限公司 | High-penetration-prevention core sheath composite fiber and fabric |
| CN109338562A (en) * | 2018-09-21 | 2019-02-15 | 东莞青柳新材料有限公司 | Functional flaxen fiber fabric and preparation method |
| CN109655433B (en) * | 2019-02-25 | 2021-08-24 | 鲁泰纺织股份有限公司 | Visual test method for covering effect of fabric and clothes in wearing process |
| CN110409016A (en) * | 2019-07-30 | 2019-11-05 | 东丽纤维研究所（中国）有限公司 | A kind of polyester fiber and fabric |
| CN112337193B (en) * | 2020-09-09 | 2022-01-07 | 华南理工大学 | Thermal comfort PM prevention2.5Nano fiber mask filter element and preparation method thereof |
-
2009
- 2009-03-24 CN CN2009100969974A patent/CN101570901B/en active Active
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|---|---|
| CN101570901A (en) | 2009-11-04 |
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