CN101285219A - Technology for producing PLA microwave radiation shielding fiber by core-skin composite spinning - Google Patents
Technology for producing PLA microwave radiation shielding fiber by core-skin composite spinning Download PDFInfo
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- CN101285219A CN101285219A CNA2008100248092A CN200810024809A CN101285219A CN 101285219 A CN101285219 A CN 101285219A CN A2008100248092 A CNA2008100248092 A CN A2008100248092A CN 200810024809 A CN200810024809 A CN 200810024809A CN 101285219 A CN101285219 A CN 101285219A
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Abstract
The invention provides a technology for manufacturing PLA microwave shielding fiber with sheath-core composite spinning. The invention is characterized in that the technology is a manufacturing method which adopts a melt of chip spinning and functional melt manufactured by twin screws to produce the PLA fiber with sheath-core structure and microwave shielding function through a composite case body and sheath-core composite components, wherein, the PLA melt is a core layer; the compositions by weight percentage of the sheath-core components are: 75 to 85 percent of core components and 15 to 25 percent of sheath components; the components by weight percentage of materials of a sheath layer manufactured by the twin screws are: 75 to 85 percent of sheath layer polymers, 5 to 8 percent of conductive nano powder, 4 to 7 percent of microwave absorbent, 3 to 9 percent of compatibilizer and 0.2 to 4 percent of resin acceptor; materials of a core layer is 100 percent of polymers; and the manufacturing is performed through adopting the composite spinning case body with the method of composite spinning. The technology for manufacturing PLA microwave shielding fiber with sheath-core composite spinning has the advantages of use of conventional equipment, simple process, easy operation, low cost, and convenient industrial popularization and application.
Description
Technical field
The present invention relates to functional chemical fibre manufacturing technology, be specially a kind of production technology, belong to chemical fiber field with micro-wave screening function PLA fiber.
Background technology
At present, the kind of domestic functional PLA fiber and the mode of production thereof have a lot, sum up to get up to comprise: production technology is spun in twin-screw PLA section; Island composite algorithm production technology etc.Though these methods also can production performance functional fibre preferably, all have weak point.Twin-screw method and island composite algorithm production procedure are long, complex procedures, and technique controlling difficulty is big, and the product physical and chemical performance is inhomogeneous.
Summary of the invention
At the deficiencies in the prior art, the technical problem that quasi-solution of the present invention is determined has provided a kind of manufacture method of new micro-wave screening functional fibre.
The objective of the invention is to design a kind of functional PLA fiber with skin-core structure, the core-skin volume ratio is 2: 8～7: 3; The percentage by weight prescription of its cortex material is: cortex polymer 75～85%, electrical-conductive nanometer powder 5～8%, microwave absorption 4～7%, bulking agent 3～9%, coupling agent 0.2～4%; Its core layer material is 100% polymer.
The object of the present invention is achieved like this:
1, makes cortex material: after by the prescription of described cortex material cortex PLA polymer, conductive powder, microwave absorption, bulking agent and coupling agent evenly being mixed, under 180～230 ℃ of temperature, squeeze through twin-screw and to obtain the cortex material melt.
2, make core-skin composite microwave shielding PLA fiber, the cortex material melt with above-mentioned 1 step gained by described core-skin weight ratio, spins out undrawn yarn with core-skin composite spinning silk machine; Again with undrawn yarn under 70～100 ℃ of temperature, stretch 2～4 times, can obtain the microwave shielding fiber of described skin-core structure.
Conduction powder of the present invention is one or more in carbon black, nickel powder, copper powder, cobalt powder, the aluminium powder etc.The good carbon black of the conduction preferred electric conductivity of powder, and surface of carbon black is through handling.
Microwave absorption of the present invention is in tri-iron tetroxide, chromium ferrite, barium ferrite, the ferronickel boron
Bulking agent of the present invention is three different stearic phthalidyl ferrous acid isopropyl esters, three (DBSA base) ferrous acid isopropyl ester, three (two hot phosphorus phthalein oxygen bases) ferrous acid isopropyl ester, one or both in three (the burnt phosphorus phthalein of dioctyl oxygen base) ferrous acid isopropyl ester, stearic acid, zinc stearate, the Tissuemat E.
Coupling agent of the present invention is a kind of in γ-glycidoxypropyltrimewasxysilane, γ-metering system phthalein oxygen base trimethoxy silane, N-β-(amino-ethyl)-gamma-amino propyl trimethoxy silicane, the γ-An Jibingjisanyiyangjiguiwan.
It is the following fine particle of 35um that conductive powder of the present invention, microwave absorption all should be processed into particle diameter.
Micro-wave screening function PLA fiber of the present invention is owing to adopted core-sheath composite structure, in fact its core-skin layer is equivalent to section and spins functional fibre, and its sandwich layer is because of being identical with the most component of cortex, thereby can solve qualitative compatibling problem, lamination can not occur.Simultaneously, make, can also solve the not wide old trouble of other composite spinning method technology fine setting property by the multiple unit tube structural reform.
The present invention uses conventional equipment, and technology is simple, and processing ease is with low cost, is convenient to industrialization promotion and uses.
The specific embodiment
Below provide 1 specific embodiment of the present invention:
6 parts of barium ferrite magnetic powders, the average grain diameter of getting 76 parts of the PLA sections of melt index 50,5 parts in copper powder material, γ-4 parts of metering system phthalein oxygen base trimethoxy silanes, average grain diameter that average grain diameter is 40nm and be 38nm be 9 parts of three (DBSA base) ferrous acid isopropyl esters of 1 μ m after fully mixing, under 190 ℃, extrude and produce the fibrocortex melt through twin-screw; Be at core-skin composite spinning silk machine to spin out undrawn yarn at 5: 5 by skin, the core volume ratio of fiber then; Again undrawn yarn stretching 2.5-3.0 under 68 ℃ of temperature is doubly obtained core-skin composite microwave shielding PLA long filament.
After measured, the microwave reflection attenuation rate of gained fiber is 10db, and x alpha ray shield rate can reach 79%.
Claims (6)
1, the technology of producing PLA microwave radiation shielding fiber by core-skin composite spinning is characterized in that A is the PLA melt, and B adopts electrical-conductive nanometer powder, microwave absorption, bulking agent, coupling agent and terylene blend to extrude the melt of making by twin-screw.
2, technology as claimed in claim 1 is characterized in that electrical-conductive nanometer powder 5～8%, microwave absorption 4～7%, and bulking agent 3～9%, coupling agent 0.2～4%, residuals weight is a terylene.
3, technology as claimed in claim 1, the powder that it is characterized in that conducting electricity are one or more in carbon black, nickel powder, copper powder, cobalt powder, the aluminium powder etc.
4, technology as claimed in claim 1 is characterized in that microwave absorption is one or more in tri-iron tetroxide, chromium ferrite, barium ferrite, the ferronickel boron.
5, technology as claimed in claim 1, it is characterized in that bulking agent is three different stearic phthalidyl ferrous acid isopropyl esters, three (DBSA base) ferrous acid isopropyl ester, three (two hot phosphorus phthalein oxygen bases) ferrous acid isopropyl ester, one or both in three (the burnt phosphorus phthalein of dioctyl oxygen base) ferrous acid isopropyl ester, stearic acid, zinc stearate, the Tissuemat E.
6, technology as claimed in claim 1 is characterized in that coupling agent is a kind of in γ-glycidoxypropyltrimewasxysilane, γ-metering system phthalein oxygen base trimethoxy silane, N-β-(amino-ethyl)-gamma-amino propyl trimethoxy silicane, the γ-An Jibingjisanyiyangjiguiwan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100248092A CN101285219A (en) | 2008-05-07 | 2008-05-07 | Technology for producing PLA microwave radiation shielding fiber by core-skin composite spinning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100248092A CN101285219A (en) | 2008-05-07 | 2008-05-07 | Technology for producing PLA microwave radiation shielding fiber by core-skin composite spinning |
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| Publication Number | Publication Date |
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| CN101285219A true CN101285219A (en) | 2008-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008100248092A Pending CN101285219A (en) | 2008-05-07 | 2008-05-07 | Technology for producing PLA microwave radiation shielding fiber by core-skin composite spinning |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545159B (en) * | 2009-05-04 | 2010-12-29 | 南京航空航天大学 | Rare-earth doped spinel ferrite/aluminum-doped zinc oxide composite fiber and preparation method thereof |
| CN101649503B (en) * | 2009-09-11 | 2012-04-18 | 天津工业大学 | Magnetic fibre and manufacture method thereof |
| CN102936761A (en) * | 2012-12-11 | 2013-02-20 | 江南大学 | Resource-renewable and biodegradable conductive fiber and preparation method thereof |
| CN106283255A (en) * | 2015-05-29 | 2017-01-04 | 台虹科技股份有限公司 | Infrared reflective fiber and method for producing infrared reflective fiber |
| CN107354533A (en) * | 2017-08-23 | 2017-11-17 | 厦门翔鹭化纤股份有限公司 | A kind of conductive polyester fiber |
| CN109252239A (en) * | 2018-07-05 | 2019-01-22 | 苏州市天翱特种织绣有限公司 | A kind of Fe3O4The preparation of/graphene oxide composite conducting fiber |
-
2008
- 2008-05-07 CN CNA2008100248092A patent/CN101285219A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545159B (en) * | 2009-05-04 | 2010-12-29 | 南京航空航天大学 | Rare-earth doped spinel ferrite/aluminum-doped zinc oxide composite fiber and preparation method thereof |
| CN101649503B (en) * | 2009-09-11 | 2012-04-18 | 天津工业大学 | Magnetic fibre and manufacture method thereof |
| CN102936761A (en) * | 2012-12-11 | 2013-02-20 | 江南大学 | Resource-renewable and biodegradable conductive fiber and preparation method thereof |
| CN102936761B (en) * | 2012-12-11 | 2015-09-23 | 江南大学 | A kind of resource is renewable, biodegradable conductive fiber and preparation method thereof |
| CN106283255A (en) * | 2015-05-29 | 2017-01-04 | 台虹科技股份有限公司 | Infrared reflective fiber and method for producing infrared reflective fiber |
| CN107354533A (en) * | 2017-08-23 | 2017-11-17 | 厦门翔鹭化纤股份有限公司 | A kind of conductive polyester fiber |
| CN107354533B (en) * | 2017-08-23 | 2022-07-01 | 厦门翔鹭化纤股份有限公司 | Conductive polyester fiber |
| CN109252239A (en) * | 2018-07-05 | 2019-01-22 | 苏州市天翱特种织绣有限公司 | A kind of Fe3O4The preparation of/graphene oxide composite conducting fiber |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081015 |