CN1127312A - Asbestos yarn producing method from asbestos short fibre fettling paper - Google Patents
Asbestos yarn producing method from asbestos short fibre fettling paper Download PDFInfo
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- CN1127312A CN1127312A CN 94110411 CN94110411A CN1127312A CN 1127312 A CN1127312 A CN 1127312A CN 94110411 CN94110411 CN 94110411 CN 94110411 A CN94110411 A CN 94110411A CN 1127312 A CN1127312 A CN 1127312A
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Abstract
The technological process for producing asbestos yarn by using short asbestos fibre as raw material after paper-making includes the following steps: pulping by using short asbestos fibre and adding water, cleaning to remove impurities and form the pulp which can be made into paper, adopting paper-making technology and adding non-woven fabric or filament fibre to obtain asbestos fibre wet paper, making the wet paper pass through such processes of pressing or vacuum dehydration treatment and oven-drying to obtain roll of paper, cutting to paper strips, twisting by rolling and making the paper strips into single yarn, and secondary twisting and plying to obtain the invented asbestos yarn product.
Description
The present invention relates to a kind of asbestos short fibre that adopts is raw material is produced asbestos yarn after copying paper process.
Asbestos fibre belongs to the mineral fibres of natural generation, compare with plant, animal, synthetic and artificial fibre have high temperature resistant (can reach more than 600 ℃), do not burn, good insulating and unique character such as anticorrosive.The human existing history of more than one thousand years of asbestos friction material of in industry and life, using.At present, development along with modernization industry, the manufacturing process technology of asbestos fibre goods is more and more higher, the scope of application of product is more and more wider, its consumption is also increasing, especially almost resort to every conceivable means in fields such as petrochemical industry, shipbuilding, power electronics, Aero-Space, become industrial indispensable sealing, liner, heat insulation, insulation material.Because asbestos fibre is natural formation, its characteristic is not controlled by human factor, especially aspect spinnability, owing to be subjected to the restriction of intensity and bending property, a large amount of staple fibres almost become can not spin thing.By at present, the production technology of asbestos friction material when the length of asbestos fibre is lower than 4.75mm (be classified as by asbestos fibre 4F～5 grade below), generally just can not directly have been weaved.In fact length is that the following asbestos short fibre of 4.75mm accounts for about 70% of China's whole ore deposit reserves, therefore, the spinnability problem of managing to solve asbestos short fibre has become a great problem of current asbestos friction material industry, by the problem of having been classified as research both at home and abroad and having inquired into.As far back as six, the seventies, some just once tested employing chemical breakdown chemocoagulation Process production asbestos yarn about the research unit and the manufacturer of asbestos friction material both at home and abroad, but because this method must be dosed the organic chemicals of larger proportion in the asbestos fibre pulping process, this has just influenced the natural characteristic of asbestos friction material to some extent, and this method is also selective to asbestos fibre itself, the asbestos short fibre that can use only accounts for 1-2% of total amount, the Qilian in the cotton and ore deposit, domestic Qilian of for example Canadian 3F more than 4 grades asbestos could use this method.Other cotton seed all can not use this method, and in a word, it is little that the existing process of utilizing asbestos short fibre to make asbestos yarn exists range of application, and utilization rate is low, the production cost height, and complex technical process and asbestos dust endanger outstanding shortcomings such as serious.
The objective of the invention is to overcome the existing asbestos short fibre that utilizes and produce the shortcoming that exists in the process of asbestos yarn, seek a kind ofly can make full use of the asbestos short fibre resource, produce asbestos yarn by the process of copying the paper enhancing, thereby the production cost of asbestos friction material is reduced, the utilization rate height of short asbestos fibre, and its natural performance is unaffected, and greatly reduces the harm of asbestos dust to producers aborning.
In order to realize the foregoing invention purpose, this method is raw material with the asbestos short fibre, copy paper and slitting through slurrying, make asbestos yarn at last, its concrete processing step is: short asbestos fibre slurrying → precipitation and suspension removal of contamination → thin up to copy pulp density → cylinder copy get l Water Paper → add nonwoven fabric or filament fiber l Water Paper enhancings → secondary is copied get make l Water Paper evenly → push or vacuum dehydration → drying cylinder heat drying → batch asbestos paper → slitting → ring ingot to twist into single thread → Split Down and synthesize asbestos yarn.
The inventive method utilizes the process of asbestos short fibre system yarn to compare with existing, and it is simple, easy to operate to have technology, raw material availability height, advantage such as product price is low, and intensity is big, and natural characteristic is unaffected.
Specific implementation process of the present invention and condition are: choose International Classification 4F level or the asbestos short fibre below 5 grades, 25-30 water extraordinarily by its weight, pull an oar through the continous mode beater and to handle 20-30 minutes, make the abundant shredding of asbestos short fibre bundle, in water, disperse to make the slurry that beating degree is 35-40 ° of SR; With slush pump slurry is beaten in the Cone shape trash separator, dished out and become the purification slurry through centrifugal widely different transferring to impurity such as making sand grains in the slurry and suspended matter, thin up is 2.5-3.5% to become and copy paper pulp to concentration again; Adopt the two cylinder secondary starching methods in the paper technology to copy paper, when first time starching, add other fabric nonwoven cloths of 8-15g weight by every square metre, also can add other filament fibers and make the l Water Paper reinforcement, have enough intensity and bending property not to influence the natural characteristic of asbestos during with the assurance spinning at the every interval 0.5-1.0cm of web direction.For the second time copying when getting starching, should make and destroy the inhomogeneous place of getting starching for the first time and increase the uniformity; Form the asbestos fibre wet paper that thickness is 0.2-0.4mm at last; Above-mentioned asbestos fibre wet paper is carried out extrusion dehydration or vacuum dehydration processing under the holding of woollen blanket, during its extrusion dehydration, linear pressure between compression roller is 25-30kg/cm, during vacuum dehydration, the vacuum of vacuum tank should reach 300-400mm mercury column, with the moisture that guarantees asbestos fibre wet paper less than 70%; L Water Paper through processed enters drying cylinder under the holding of woollen blanket, at this moment, woollen blanket separates with l Water Paper, making l Water Paper be attached at dryer surface dries, asbestos fibre paper moisture after the oven dry is less than 3.5%, and surface temperature of drier should be controlled at 85-95 ℃, and linear velocity is 15-20 meters/minutes; Asbestos fibre paper roll after the oven dry is become the roller shape, and cut into the wide paper slip of 5-12mm by required specification, make single thread with ring ingot formula twisting mill again, the twist of its twisting mill is controlled at every meter 80-110 twist, with compound twister the single thread retwist of pooling capital is become the asbestos yarn product at last, the twist of its compound twister generally is controlled between 40-60 sth. made by twisting/rice.
Claims (5)
1, a kind of with the asbestos short fibre be raw material through copying the process of paper process for producing asbestos yarn, it is characterized in that asbestos short fibre added after the water making beating and remove impurity through purification and form and can copy paper pulp; Adopt the paper technology of two garden net secondary starching methods again and make asbestos fibre wet paper through adding nonwoven fabric or filament fiber; Under the holding of woollen blanket, l Water Paper is pushed or vacuum dehydration processing back drying then, make roller shape asbestos fibre paper roll again; Become paper slip and afterturn to become single thread the asbestos fibre Paper Roll Cutting at last, make asbestos yarn with compound twister plying retwist again.
2, the method for production asbestos yarn according to claim 1, it is characterized in that 25-30 water extraordinarily by asbestos short fibre weight, making the asbestos short fibre shredding, disperse to form beating degree through beater making beating is the slurry of 35-40 ° of SR, puts in Cone shape trash separator after wherein impurity is removed in centrifugal widely different commentaries on classics thin up and to concentration be 2.5-3.5% the paper pulp of copying.
3, the method for production asbestos yarn according to claim 1 is characterized in that the machine hand adds other fabric nonwoven cloths or adds a threads fiber to gain in strength and bendability at the every interval 0.5-1.0cm of web direction by every square metre of weight that add 8-15 grams during starching for the first time in planting; Starching for the second time should strengthen the uniformity to form the asbestos fibre wet paper of the uniform 0.2-0.4mm of thickness.
4, the method for production asbestos yarn according to claim 1, the linear pressure when it is characterized in that extrusion dehydration between compression roller are 25-30kg/cm; Vacuum 300-400mm/ mercury column of vacuum tank during vacuum dehydration, dehydration back l Water Paper moisture places l Water Paper surface temperature to be 85-95 ℃ less than 70% then, and linear velocity is the interior oven dry of 15-20 meters/minutes drying cylinder, make moisture less than 3.5%, and be rolled into roller shape asbestos fibre paper.
5, the method for production asbestos yarn according to claim 1, twist with the fingers into spill after it is characterized in that asbestos fibre paper cut into the wide paper slip of 5-12mm, being that every meter 80-110 ring ingot formula twisting mill is made single thread with the twist again, is that every meter 40-60 compound twister becomes the asbestos yarn product with the single thread retwist of pooling capital with the twist at last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94110411 CN1127312A (en) | 1994-01-11 | 1994-01-11 | Asbestos yarn producing method from asbestos short fibre fettling paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94110411 CN1127312A (en) | 1994-01-11 | 1994-01-11 | Asbestos yarn producing method from asbestos short fibre fettling paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1127312A true CN1127312A (en) | 1996-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94110411 Pending CN1127312A (en) | 1994-01-11 | 1994-01-11 | Asbestos yarn producing method from asbestos short fibre fettling paper |
Country Status (1)
| Country | Link |
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| CN (1) | CN1127312A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108166121A (en) * | 2018-02-08 | 2018-06-15 | 武汉纺织大学 | A kind of method that down-like difficulty spins the compound resultant yarn of fiber short route |
| CN108286099A (en) * | 2018-02-08 | 2018-07-17 | 武汉纺织大学 | A kind of yarn manufacturing process of built-in microparticle material |
| CN108286101A (en) * | 2018-02-08 | 2018-07-17 | 武汉纺织大学 | A kind of complex yarn manufacturing process of built-in powder body material |
| CN108286098A (en) * | 2018-02-08 | 2018-07-17 | 武汉纺织大学 | A kind of ultrashort difficult method for spinning the compound resultant yarn of fiber short route |
| CN108286100A (en) * | 2018-02-08 | 2018-07-17 | 武汉纺织大学 | A kind of method that down-like difficulty spins fiber short route resultant yarn |
| CN108286206A (en) * | 2018-04-14 | 2018-07-17 | 福建省大投科技有限公司 | Stone fiber papermaking method |
| CN108342795A (en) * | 2018-02-08 | 2018-07-31 | 武汉纺织大学 | A kind of ultrashort difficult method for spinning fiber short route resultant yarn |
| CN108385228A (en) * | 2018-02-08 | 2018-08-10 | 武汉纺织大学 | A kind of method of the compound resultant yarn of high rigidity fragile fibre short route double twisting |
| CN108396428A (en) * | 2018-02-08 | 2018-08-14 | 武汉纺织大学 | A kind of method of high rigidity fragile fibre short route double twisting resultant yarn |
| CN109706575A (en) * | 2019-01-28 | 2019-05-03 | 英麒科技集团有限公司 | A kind of yarn carrying asbestos short fibre copy paper |
-
1994
- 1994-01-11 CN CN 94110411 patent/CN1127312A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108166121A (en) * | 2018-02-08 | 2018-06-15 | 武汉纺织大学 | A kind of method that down-like difficulty spins the compound resultant yarn of fiber short route |
| CN108286099A (en) * | 2018-02-08 | 2018-07-17 | 武汉纺织大学 | A kind of yarn manufacturing process of built-in microparticle material |
| CN108286101A (en) * | 2018-02-08 | 2018-07-17 | 武汉纺织大学 | A kind of complex yarn manufacturing process of built-in powder body material |
| CN108286098A (en) * | 2018-02-08 | 2018-07-17 | 武汉纺织大学 | A kind of ultrashort difficult method for spinning the compound resultant yarn of fiber short route |
| CN108286100A (en) * | 2018-02-08 | 2018-07-17 | 武汉纺织大学 | A kind of method that down-like difficulty spins fiber short route resultant yarn |
| CN108342795A (en) * | 2018-02-08 | 2018-07-31 | 武汉纺织大学 | A kind of ultrashort difficult method for spinning fiber short route resultant yarn |
| CN108385228A (en) * | 2018-02-08 | 2018-08-10 | 武汉纺织大学 | A kind of method of the compound resultant yarn of high rigidity fragile fibre short route double twisting |
| CN108396428A (en) * | 2018-02-08 | 2018-08-14 | 武汉纺织大学 | A kind of method of high rigidity fragile fibre short route double twisting resultant yarn |
| CN108166121B (en) * | 2018-02-08 | 2021-01-22 | 武汉纺织大学 | Method for compounding down-like hard-to-spin fiber into yarn in short process |
| CN108286206A (en) * | 2018-04-14 | 2018-07-17 | 福建省大投科技有限公司 | Stone fiber papermaking method |
| CN109706575A (en) * | 2019-01-28 | 2019-05-03 | 英麒科技集团有限公司 | A kind of yarn carrying asbestos short fibre copy paper |
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