CN102535259A - Aluminum-fibre surface felt and preparation method thereof - Google Patents
Aluminum-fibre surface felt and preparation method thereof Download PDFInfo
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- CN102535259A CN102535259A CN2011104489009A CN201110448900A CN102535259A CN 102535259 A CN102535259 A CN 102535259A CN 2011104489009 A CN2011104489009 A CN 2011104489009A CN 201110448900 A CN201110448900 A CN 201110448900A CN 102535259 A CN102535259 A CN 102535259A
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Abstract
The invention relates to an aluminum-fibre surface felt and a preparation method thereof. The aluminum-fibre surface felt is formed by combining shortly cut aluminum fibres which are irregularly positioned and arranged on an organic substrate, the surface density of the aluminum-fibre surface felt is 30g/m<2> to 250g/m<2>, and the mass percent content of organic substances is 6 to 8 percent. The concrete preparation method comprises the following steps of: (a) cutting fibres shortly; (b) preparing slurry; (c) forming a felt; (d) steeping organic substances; and (e) drying and solidifying. The material disclosed by the invention has the performance of high-speed conduction of electricity, heat and electromagnetism, is soluble in all common resin, and can be used for components for static dissipation, electromagnetic interference, radio-frequency interference shielding and the like when being added into plastics.
Description
Technical field
The present invention relates to aluminum fiber surface felt of the efficient conduct electricity of a kind of ability, heat, electromagnetism and preparation method thereof.
Background technology
Metal fibre is a kind of good functional material that integrates multiple specific function, is the essential industry material that grows up over nearly 30 years.The porous metal fiber felted terxture of being processed by metal fibre has important purposes in fields such as filtering material, sound-absorbing material, absorbing materials.Aluminum fiber is because in light weight, the easy recovery has good anti-electromagnetic-radiation ability, and the application in sound-absorbing material, absorbing material field comes into one's own day by day.
Metal fiber felt can be added in the plastic products and use as good conduct electricity, heat, electromagnetic material, thereby improves heat conduction, conduction and the EMI shielding capability of plastics.Yet because common aluminum fiber felt thickness is bigger, uniformity is difficult to control; Need regular hour response with the organic material thorough impregnation, and add when using certain limitation is also arranged, be difficult to satisfy the requirement of modern precision function element; To a certain extent, restricted the use of this material.So, pressing for a kind of good uniformity of invention, surface quality is high, the surperficial felt that approaches and be easy in plastics, add.
Summary of the invention
In view of this, the object of the invention will address the above problem exactly, invents a kind of aluminum fiber overlay mat and preparation method thereof.
Order of the present invention is realized through following technical scheme:
Aluminum fiber of the present invention surface felt, said material are to be located at random to be arranged on the organic substrate and combined by the short aluminum fiber of cutting.The surface density of said aluminum fiber surface felt is 30 g/m
2-250g/m
2, organic matter quality degree is 6-8%.
The preparation method of aluminum fiber of the present invention surface felt said method comprising the steps of:
(a) the fiber weak point is cut;
(b) pulp preparation;
(c) felt moulding;
(d) dipping organic matter;
(e) dry solidification.
The fiber weak point is cut:With filament cutter the aluminum fiber weak point is cut into the long short chopping of 6-24mm, used aluminum fiber can be the continuous fibers that adopts the hubbing preparation, also can be the middle short fiber that adopts cutting method and rapid solidification method preparation, and fibre diameter is generally 20-100
M.The length of staple fiber and its diameter, purposes are relevant, and general length is 20mm.For density and the uniformity that improves felt, can add the filament of length less than 12mm, in order to increase the intensity of felt, can add the filament that length is 24-36mm.
Pulp preparation:The short chopping of weighing adds in the agitator tank with water and chemical assistant dispersed with stirring then, processes homodisperse certain concentration slurry.The concentration of short chopping in slurry is 0.1-0.5 (quality) %, and the viscosity of slurry is 10-15CP, and pH value is 6-8, and air content is 4-8%
Said chemical assistant comprises: thickener and antifoaming agent.The addition of thickener is so that the viscosity of slip reaches 12-15CP is as the criterion, and the addition of antifoaming agent is so that the air content in the slip is controlled at 4-8% is as the criterion.
Said thickener is a hydroxyethylcellulose, and said antifoaming agent is Agitan295, is the commercially available prod.
The felt moulding:Slurry is sent to the starching circulatory system continuously through measuring pump, and slurry is further diluted and is pumped into head box by flow box, and fibre stuff is tiltedly forming mat on the fourdrinier machine.Most of water in the slurry recycles in the entering white water chest after dewatering box dewaters naturally, and excessive moisture is sent to impregnator in the mat behind the air exhauster forced dehydration.
The dipping organic matter:The mat of forming is introduced in impregnator; The adhesive special for preparing is flowed out by the overflow adhesive applicator of applying glue guipure top, is immersed on the aluminum fiber mat saturatedly, and unnecessary binding agent is removed by suction box; After knockout drum separates, come back in the binding agent circulatory system.
Said binding agent is not all the mixed liquor of any and coupling agent KH650 in Lauxite, phenolic resins, polyvinyl acetate, polyvinyl alcohol, acrylic emulsion, the acrylic acid ester according to purposes, and the mass percentage content of coupling agent KH650 is 1%-30%.
Dry solidification:Adopt hot blast penetration convection oven drying method, in the baking and curing stove of hot air circulation, accomplish.Felt after the oven dry is after detecting, through being rolled into tubular around the volume machine.
The method that the present invention adopted is the wet moulding technology of similar papermaking.
Material of the present invention can be used as a kind of efficient conduct electricity, heat, electromagnetic layer; Add in the GRP (being fiberglass); Be used as the antenna of satellite, ground radar; The directional aerial of broadcast communication, cable, the electromagnetic interference shield element of aviation and automobile and the absorbing material of specific radar etc.
Description of drawings
Fig. 1 is the technological process of production figure of aluminum fiber surface felt.
Specific embodiments
Further specify through embodiment below:
Embodiment 1
Adding thickener and antifoaming agent are processed plain boiled water in pure water, make the viscosity of plain boiled water reach 10CP, and air content is controlled at 8%.Thickener is a hydroxyethylcellulose, and antifoaming agent is Agitan295.Get the short diameter of cutting aluminum fiber and be 20
m, long 15mm.Weak point is cut aluminum fiber and plain boiled water add in the agitator tank and stir, the short-and-medium concentration of cutting aluminum fiber of slurry is 0.3%.
Slurry is sent to the starching circulatory system continuously through measuring pump, behind diluted 10 times of the slurry, is pumped into head box by flow box, fibre stuff is tiltedly forming mat on the fourdrinier machine.Most of water in the slurry is evenly dehydration on guipure, and the excessive moisture in the mat is sent to impregnator behind the air exhauster forced dehydration.
The mat of forming is introduced in impregnator; The adhesive special for preparing is flowed out by the overflow adhesive applicator of applying glue guipure top, is immersed on the aluminum fiber mat saturatedly, and unnecessary binding agent is removed by suction box; After knockout drum separates, come back in the binding agent circulatory system.The content of binding agent is realized by the vacuum of control suction box in the final products.
Said binding agent is the mixed liquor of polyvinyl acetate and coupling agent KH650, and wherein the polyvinyl acetate ester content is 85%, and KH650 coupling agent content is 15%.
Hot blast penetration convection method is adopted in oven dry, in the baking and curing stove of hot air circulation, accomplishes.Felt after the oven dry is after detecting, through being rolled into tubular around the volume machine.
The content of binding agent is 6% in the final products.
Embodiment 2
Adding thickener and antifoaming agent are processed plain boiled water in pure water, make the viscosity of plain boiled water reach 12CP, and air content is controlled at 6%.Thickener is a hydroxyethylcellulose, and antifoaming agent is Agitan295.Get the short diameter of cutting aluminum fiber and be 50
m, long 20mm.Weak point is cut aluminum fiber and plain boiled water add in the agitator tank and stir, the short-and-medium concentration of cutting aluminum fiber of slurry is 0.2%.
Said binding agent is the mixed liquor of polyvinyl alcohol and coupling agent KH650, and wherein polyvinyl alcohol content is 80%, and KH650 coupling agent content is 20%.
Felt moulding, dipping organic matter, dry solidification process are identical with embodiment 1, be said binding agent be the mixed liquor of polyvinyl alcohol and coupling agent KH650, wherein polyvinyl alcohol content is 80%, KH650 coupling agent content is 20%.
The content of binding agent is 7% in the final products.
Embodiment 3
Adding thickener and antifoaming agent are processed plain boiled water in pure water, make the viscosity of plain boiled water reach 11CP, and air content is controlled at 7%.Thickener is a hydroxyethylcellulose, and antifoaming agent is Agitan295.Get the short diameter of cutting aluminum fiber and be 100
m, long 18mm.Weak point is cut aluminum fiber and plain boiled water add in the agitator tank and stir, the short-and-medium concentration of cutting aluminum fiber of slurry is 0.1%.
Said binding agent is the mixed liquor of acrylic emulsion and coupling agent KH650, and wherein acrylic emulsion content is 80%, and KH650 coupling agent content is 20%.
Felt moulding, dipping organic matter, dry solidification process are identical with embodiment 1, be said binding agent be the mixed liquor of acrylic emulsion and coupling agent KH650, wherein acrylic emulsion content is 80%, KH650 coupling agent content is 20%.
The content of binding agent is 6% in the final products.
Claims (10)
1. aluminum fiber surface felt is characterized in that: said material is to be located at random to be arranged on the organic substrate and combined by the short aluminum fiber of cutting; The surface density of said aluminum fiber surface felt is 30 g/m
2-250g/m
2, organic matter quality degree is 6-8%.
2. the preparation method of the described aluminum fiber of claim 1 surface felt is characterized in that: said method comprising the steps of:
(a) the fiber weak point is cut;
(b) pulp preparation;
(c) felt moulding;
(d) dipping organic matter;
(e) dry solidification.
3. the preparation method of aluminum fiber according to claim 2 surface felt is characterized in that: said (a) step is with filament cutter the aluminum fiber weak point to be cut into the long short chopping of 6-24mm.
4. the preparation method of aluminum fiber according to claim 3 surface felt is characterized in that: in the step (a), for density and the uniformity that improves felt, can add the filament of length less than 12mm; In order to increase the intensity of felt, can add the filament that length is 24-36mm.
5. the preparation method of aluminum fiber according to claim 2 surface felt, it is characterized in that: said (b) step comprises: the short chopping of weighing, add then in the agitator tank with water and chemical assistant dispersed with stirring, process homodisperse certain concentration slurry; Said chemical assistant comprises: thickener and antifoaming agent; The addition of thickener is so that the viscosity of slip reaches 12-15CP is as the criterion, and the addition of antifoaming agent is so that the air content in the slip is controlled at 4-10% is as the criterion.
6. the preparation method of aluminum fiber according to claim 5 surface felt, it is characterized in that: said thickener is a hydroxyethylcellulose, said antifoaming agent is Agitan295.
7. the preparation method of aluminum fiber according to claim 2 surface felt; It is characterized in that: said (c) step comprises: slurry is sent to the starching circulatory system continuously through measuring pump; Slurry is further diluted and is pumped into head box by flow box, and fibre stuff is tiltedly forming mat on the fourdrinier machine; Most of water in the slurry recycles in the entering white water chest after dewatering box dewaters naturally, and excessive moisture is sent to impregnator in the mat behind the air exhauster forced dehydration.
8. the preparation method of aluminum fiber according to claim 2 surface felt; It is characterized in that: said (d) step comprises: the mat of forming is introduced in impregnator; The adhesive special for preparing is flowed out by the overflow adhesive applicator of applying glue guipure top, is immersed on the aluminum fiber mat saturatedly, and unnecessary binding agent is removed by suction box; After knockout drum separates, come back in the binding agent circulatory system.
9. the preparation method of aluminum fiber according to claim 2 surface felt; It is characterized in that: said binding agent is not all the mixed liquor of any and coupling agent KH650 in Lauxite, phenolic resins, polyvinyl acetate, polyvinyl alcohol, acrylic emulsion, the acrylic acid ester according to purposes, and the mass percentage content of coupling agent KH650 is 1%-30%.
10. the preparation method of aluminum fiber according to claim 2 surface felt, it is characterized in that: said (e) step adopts hot blast penetration convection oven drying method, in the baking and curing stove of hot air circulation, accomplishes; Felt after the oven dry is after detecting, through being rolled into tubular around the volume machine.
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| CN201110448900.9A CN102535259B (en) | 2011-12-29 | 2011-12-29 | Aluminum-fibre surface felt and preparation method thereof |
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| CN201110448900.9A CN102535259B (en) | 2011-12-29 | 2011-12-29 | Aluminum-fibre surface felt and preparation method thereof |
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| CN102535259B CN102535259B (en) | 2015-05-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107662353A (en) * | 2017-10-30 | 2018-02-06 | 合肥工业大学 | A kind of method and device for preparing orientation short fiber reinforced polymer composites |
| CN108824068A (en) * | 2018-06-11 | 2018-11-16 | 常州中新天马玻璃纤维制品有限公司 | Substitute the extraordinary veneer glass fibre belt one-shot forming technique of protecting paper of gypsum board |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108642709A (en) * | 2018-04-13 | 2018-10-12 | 刘洪亮 | Aramid fiber enhances face felt |
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| CN1087844A (en) * | 1993-10-29 | 1994-06-15 | 王晶洁 | The spraying method of refractory fiber floor and the flame retardant coating that makes thus |
| CN101100393A (en) * | 2007-06-15 | 2008-01-09 | 山东鲁阳股份有限公司 | Aluminum oxide fibre veener module and preparation method thereof |
| CN101221754A (en) * | 2007-09-29 | 2008-07-16 | 彭书成 | Production method for aluminum fabric acoustic absorption composite material |
| CN101765685A (en) * | 2007-07-31 | 2010-06-30 | 金伯利-克拉克环球有限公司 | conductive webs |
| CN102121192A (en) * | 2011-01-18 | 2011-07-13 | 东华大学 | Elastic conductive composite fiber and preparation method thereof |
-
2011
- 2011-12-29 CN CN201110448900.9A patent/CN102535259B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1087844A (en) * | 1993-10-29 | 1994-06-15 | 王晶洁 | The spraying method of refractory fiber floor and the flame retardant coating that makes thus |
| CN101100393A (en) * | 2007-06-15 | 2008-01-09 | 山东鲁阳股份有限公司 | Aluminum oxide fibre veener module and preparation method thereof |
| CN101765685A (en) * | 2007-07-31 | 2010-06-30 | 金伯利-克拉克环球有限公司 | conductive webs |
| CN101221754A (en) * | 2007-09-29 | 2008-07-16 | 彭书成 | Production method for aluminum fabric acoustic absorption composite material |
| CN102121192A (en) * | 2011-01-18 | 2011-07-13 | 东华大学 | Elastic conductive composite fiber and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107662353A (en) * | 2017-10-30 | 2018-02-06 | 合肥工业大学 | A kind of method and device for preparing orientation short fiber reinforced polymer composites |
| CN108824068A (en) * | 2018-06-11 | 2018-11-16 | 常州中新天马玻璃纤维制品有限公司 | Substitute the extraordinary veneer glass fibre belt one-shot forming technique of protecting paper of gypsum board |
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| CN102535259B (en) | 2015-05-20 |
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