CN101831192B - Flame-retardant lignin fiber for roads and preparation method thereof - Google Patents
Flame-retardant lignin fiber for roads and preparation method thereof Download PDFInfo
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- CN101831192B CN101831192B CN2010101755566A CN201010175556A CN101831192B CN 101831192 B CN101831192 B CN 101831192B CN 2010101755566 A CN2010101755566 A CN 2010101755566A CN 201010175556 A CN201010175556 A CN 201010175556A CN 101831192 B CN101831192 B CN 101831192B
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Abstract
The invention discloses flame-retardant lignin fiber for roads and a preparation method thereof. The flame-retardant lignin fiber provided by the invention consists of the following materials in percentage by weight: 60 to 80 percent of lignin fiber, 5 to 10 percent of leavening agent and 15 to 30 percent of inorganic flame retardant. The preparation method comprises the following steps of: preparing the materials, cutting and crushing the materials to form the lignin fiber, then stirring the lignin fiber, the leavening agent and the inorganic flame retardant uniformly, and finally, compressing the mixture to form a finished product and packing the product under vacuum. The method for producing the flame-retardant lignin fiber for the roads by using waste newspaper and adopting a dry method utilizes the waste, accords with the era background of cyclic economy, does not generate harmful substances during production, has no any influence on the surrounding environment, and has the advantages of simple process flow, easy control and high production efficiency; and the product has good road performance, can effectively prevent the combustion of the lignin fiber and the bituminous mixture, and has obvious economic and social benefits.
Description
Technical field
The present invention relates to a kind of flame-retardant lignin fiber for roads and preparation method thereof, particularly relate to a kind of have good flame retardant effect, eco-friendly cellulose fiber for road use and preparation method thereof.
Background technology
The tunnel is a highway, the important component part of mountain ridge hilling terrain highway particularly, and, become the throat of whole highway system often because its irreplaceability.Because relative closure in case presence of fire not only can cause the serious damage of tunnel facility and tunnel structure, causes in various degree traffic jam even interruption, also can threaten user's personnel safety in the large tunnel, cause serious economy and social influence.
Bituminous concrete pavement because of its good driving comfort, low noise, visual high, maintenance is convenient etc., and factor is widely used in road engineering.But when it is applied in the tunnel; Because bituminous material itself has tangible combustibility; And when burning, produce a large amount of smog and obnoxious flavour and serious threat tunnel and user's safety, the combustibility and the burning and exhausting that how to reduce bituminous concrete pavement in the tunnel have become road circle personage research and the focus of paying close attention to.
In order to solve the problem of tunnel fire proofing, adopt two kinds of different modes to reduce the combustibility of bituminous pavement in the tunnel in the world usually at present.A kind of is in asphalt, to add fire retardant, through its with pitch in institute decomposes generation during the burning of flammable organic cpds material react, thereby slow down or stop the incendiary Kettenreaktion, reach fire-retardant purpose; Another kind is to be employed on the supercrust of asphalt concrete pavement to smear the back-fire relief temperature-resistant material, plays the fp effect through isolating blacktop.
Lignin fibre is applied to have in the asphalt raising compound high and low temperature performance; Improve a series of advantages such as compound water stability, particularly in stone mastic asphalt, lignin fibre has irreplaceable effect as pitch stablizer in the compound and reinforcement material; And in recent years because stone mastic asphalt high-quality; The continuous increase of its number of applications in highway engineering, and aging, damage appears under the comprehensive action of traffic loading and environment when the road surface, when needing punishment; Angle from resource circulation utilization; The regeneration of waste and old compound punishment is had clear superiority, but because the mix and the construction temperature of such compound are higher, there is certain influence in the character of lignin fibre;, construction and operation phase still keep better quality then more to help guaranteeing the quality of regeneration asphalt Matrix mixing material like the lignin fibre in the compound after using; Reduce regeneration cost, thus the application of flame retardant type lignin fibre for guaranteeing the asphalt quality, the combustibility that reduces asphalt has practical significance.
Summary of the invention
For reducing the combustibility of lignin fibre, the purpose of this invention is to provide a kind of flame-retardant lignin fiber that is specifically designed to bituminous pavement, this invention has good flame retardancy, and obvious to the improvement effect of performance of asphalt mixture, production cost is low, easy to use.In addition, this invention has made full use of waste and old resource and non-pollutant discharge, meets recycling economy and requirement on environmental protection.
Another object of the present invention provides a kind of preparation method of above-mentioned flame-retardant lignin fiber.
In order to achieve the above object, flame-retardant lignin fiber for roads provided by the invention, form with weight percent by following raw materials according:
Lignin fibre 60～80%
Raising agent 5～10%
Inorganic combustion inhibitor 15～30%
Lignin fibre of the present invention is 6～8 times of material deadweights by oil absorbency, and ash oontent forms less than 8% newsprinting paper cutting.
Raising agent of the present invention is a carbonate material.
Inorganic combustion inhibitor of the present invention is mixed according to 30～50 parts of weight part ratios, 25～50 parts, 20～40 parts by red phosphorus, crystal water white lake and hydrated magnesium silicate.
The present invention provides the preparation method of above-mentioned a kind of flame-retardant lignin fiber for roads, comprises the steps:
(1) get the raw materials ready: selecting oil absorbency is 6～8 times of material deadweights, ash oontent less than 8% newsprinting paper as the starting material of producing lignin fibre;
(2) cutting: with being equipped with newsprinting paper be cut into the fragment that width is 9～11mm;
(3) pulverize: fragment is added into shredding unit, pulverizes the back and form lignin fibre, the percent of pass when lignin fibre sieves through 0.15mm is 70 ± 10%;
(4) stir: lignin fibre, raising agent and inorganic combustion inhibitor are added into whipping appts in proportion, raising agent and inorganic combustion inhibitor are uniformly distributed in the lignin fibre;
(5) finished product compression packing: the lignin fibre boil down to after utilizing compressor to stir is block, and is vacuum-packed then.
The flame-retardant lignin fiber for roads that the present invention relates to has good flame retardancy, through directly adding in proportion in the asphalt, can obviously reduce the combustibility of asphalt.Since admixture the adding of lignin fibre of inorganic combustion inhibitor; With eliminating the stronger radical of activity that the hydrocarbon oxidation initial stage produces in the asphalt burning, through forming barrier film, and generate modes such as stablizing carburization zone at asphalt surface; Cutting off flammable, combustion-supporting gas transmits in pitch; Make fire end, produce, the purpose that reach fire-retardant, presses down cigarette from putting out phenomenon.The production of flame-retardant lignin fiber makes full use of waste and old resource, does not produce solid and liquid debris in the production process simultaneously, has tangible economic and social benefit, meets the themes of the times of current recycling economy, environment protection, Sustainable development.
In order to reflect effect of the present invention, be example with SMA13, through the method for simultaneous test, tested the admixture and the fire-retardant and over-all properties of these article of admixture modified asphalt SMA 13 compounds not respectively, comparing result is seen table 1:
These article of table 1 admixture SMA13 mixture performance
Annotate: will contain ignition on the marshal piece that the fixing cotton yarn of amount of gasoline is put into moulding; Burn repeatedly 3 times; Treat that flame puts into 60 ℃ of water tanks with test specimen after the cooling and be incubated 35 ± 5min from putting out, adopt the stability before and after the Marshall Test appearance test burning then.
Embodiment
Through the mode of embodiment, technical scheme of the present invention is elaborated below, but protection scope of the present invention is not limited to said embodiment.
Embodiment 1
30 parts in red phosphorus, 50 parts in crystal water white lake, 20 parts of thorough mixing of hydrated magnesium silicate is even, the preparation inorganic combustion inhibitor.And according to following step production flame-retardant lignin fiber.
(1) get the raw materials ready: selecting oil absorbency is 6～8 times of material deadweights, ash oontent less than 8% newsprinting paper as the starting material of producing lignin fibre;
(2) cutting: with being equipped with newsprinting paper be cut into the fragment that width is 9～11mm;
(3) pulverize: fragment is added into shredding unit, pulverizes the back and form lignin fibre, the percent of pass when lignin fibre sieves through 0.15mm is 70 ± 10%;
(4) stir: according to weight percent with lignin fibre: 60%, raising agent: 10%, and inorganic combustion inhibitor: 30% ratio is added into whipping appts, and raising agent and inorganic combustion inhibitor are uniformly distributed in the lignin fibre;
(5) finished product compression packing: the lignin fibre boil down to after utilizing compressor to stir is block, and is vacuum-packed then.
Embodiment 2
50 parts in red phosphorus, 25 parts in crystal water white lake, 30 parts of thorough mixing of hydrated magnesium silicate is even, the preparation inorganic combustion inhibitor.And according to following step production flame-retardant lignin fiber.
(1) get the raw materials ready: selecting oil absorbency is 6～8 times of material deadweights, ash oontent less than 8% newsprinting paper as the starting material of producing lignin fibre;
(2) cutting: with being equipped with newsprinting paper be cut into the fragment that width is 9～11mm;
(3) pulverize: fragment is added into shredding unit, pulverizes the back and form lignin fibre, the percent of pass when lignin fibre sieves through 0.15mm is 70 ± 10%;
(4) stir: according to weight percent with lignin fibre: 80%, raising agent: 5%, and inorganic combustion inhibitor: 15% ratio is added into whipping appts, and raising agent and inorganic combustion inhibitor are uniformly distributed in the lignin fibre;
(5) finished product compression packing: the lignin fibre boil down to after utilizing compressor to stir is block, and is vacuum-packed then.
Embodiment 3
40 parts in red phosphorus, 35 parts in crystal water white lake, 40 parts of thorough mixing of hydrated magnesium silicate is even, the preparation inorganic combustion inhibitor.And according to following step production flame-retardant lignin fiber.
(1) get the raw materials ready: selecting oil absorbency is 6～8 times of material deadweights, ash oontent less than 8% newsprinting paper as the starting material of producing lignin fibre;
(2) cutting: with being equipped with newsprinting paper be cut into the fragment that width is 9～11mm;
(3) pulverize: fragment is added into shredding unit, pulverizes the back and form lignin fibre, the percent of pass when lignin fibre sieves through 0.15mm is 70 ± 10%;
(4) stir: according to weight percent with lignin fibre: 70%, raising agent: 7.5%, and inorganic combustion inhibitor: 22.5% ratio is added into whipping appts, and raising agent and inorganic combustion inhibitor are uniformly distributed in the lignin fibre;
(5) finished product compression packing: the lignin fibre boil down to after utilizing compressor to stir is block, and is vacuum-packed then.
Claims (3)
1. flame-retardant lignin fiber for roads is characterized in that: be made up of with weight percent following raw materials according:
Lignin fibre 60～80%
Raising agent 5～10%
Inorganic combustion inhibitor 15～30%
Described raising agent is a carbonate material; Described inorganic combustion inhibitor by red phosphorus, crystal water white lake and hydrated magnesium silicate according to 30～50 parts of weight part ratios: 25～50 parts: 20～40 parts mix.
2. according to the said a kind of flame-retardant lignin fiber for roads of claim 1, it is characterized in that: said lignin fibre is 6～8 times of material deadweights by oil absorbency, and ash oontent forms less than 8% newsprinting paper cutting.
3. according to the preparation method of the said a kind of flame-retardant lignin fiber for roads of claim 1, it is characterized in that described preparation method comprises the steps:
(1) get the raw materials ready: selecting oil absorbency is 6～8 times of material deadweights, ash oontent less than 8% newsprinting paper as the starting material of producing lignin fibre;
(2) cutting: with being equipped with newsprinting paper be cut into the fragment that width is 9～11mm;
(3) pulverize: fragment is added into shredding unit, pulverizes the back and form lignin fibre, the percent of pass when lignin fibre sieves through 0.15mm is 70 ± 10%;
(4) stir: lignin fibre, raising agent and inorganic combustion inhibitor are added into whipping appts in proportion, raising agent and inorganic combustion inhibitor are uniformly distributed in the lignin fibre;
(5) finished product compression packing: the lignin fibre boil down to after utilizing compressor to stir is block, and is vacuum-packed then.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101755566A CN101831192B (en) | 2010-05-18 | 2010-05-18 | Flame-retardant lignin fiber for roads and preparation method thereof |
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| CN2010101755566A CN101831192B (en) | 2010-05-18 | 2010-05-18 | Flame-retardant lignin fiber for roads and preparation method thereof |
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| CN101831192A CN101831192A (en) | 2010-09-15 |
| CN101831192B true CN101831192B (en) | 2012-04-11 |
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| CN107129174A (en) * | 2017-05-19 | 2017-09-05 | 山西宝路加交通科技有限公司 | A kind of lignin fibre |
| CN108264255A (en) * | 2017-05-22 | 2018-07-10 | 海宁永欣科技咨询有限公司 | The production method of cellulose fiber for road use |
| CN108795074A (en) * | 2018-06-21 | 2018-11-13 | 滁州市三和纤维制造有限公司 | A kind of preparation method of lignin fibre |
| CN108821629A (en) * | 2018-06-21 | 2018-11-16 | 滁州市三和纤维制造有限公司 | A kind of lignin fibre |
| CN109705600A (en) * | 2018-12-28 | 2019-05-03 | 广州鸿绵合成材料有限公司 | A kind of high-performance ligno cellulose fiber and preparation method |
| CN110550880B (en) * | 2019-09-29 | 2021-10-29 | 山东金力王实业有限公司 | Lignin fiber prepared from waste cotton linters and preparation method thereof |
| CN110903491A (en) * | 2019-12-12 | 2020-03-24 | 湖南绿燊环保科技有限公司 | Flame retardant, modified polylactic acid and preparation method thereof |
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| US20090022974A1 (en) * | 2006-01-27 | 2009-01-22 | Nanodynamics, Inc. | Treated articles and methods of treating articles |
| KR100709669B1 (en) * | 2006-09-01 | 2007-04-19 | 김준식 | A compound for concreat and nontoxic concreat using the above compound |
| CN101698749B (en) * | 2009-11-03 | 2011-10-26 | 北京林业大学 | Wood-plastic composite material and prepration method thereof |
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