CN101545235A - Complex fiber roadbed thin felt - Google Patents
Complex fiber roadbed thin felt Download PDFInfo
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- CN101545235A CN101545235A CN200910116620A CN200910116620A CN101545235A CN 101545235 A CN101545235 A CN 101545235A CN 200910116620 A CN200910116620 A CN 200910116620A CN 200910116620 A CN200910116620 A CN 200910116620A CN 101545235 A CN101545235 A CN 101545235A
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Abstract
The present invention discloses a complex fiber roadbed thin felt, including 40% to 60% of glass fiber short cutting silk by weight, 20% to 40% of polyester fiber short cutting silk by weight, and 18% to 30% of organic binder. The complex fiber roadbed thin felt is made from the glass fiber short cutting silk, the polyester fiber short cutting silk and the organic binder through a wet process, thus the felt is integrated with the advantage of the glass fiber thin felt and the polyester fiber thin felt, has adequate intensity, good flexibility, uniform thickness, easy impregnation, and high collapse property; the complex fiber roadbed thin felt is not only suitable for wide temperature range, also has low expansion coefficient, good stability, strong capacity for penetrating bitumen; a structural layer is formed after absorbing a bituminous material, thus the felt has water-proof, heat-proof and corrosion-proof physical characteristics, and very good associativity and is not liable to separate. The felt is suitable for building and reconstructing an old cement concrete pavement asphalt pavement; the repair maintenance of asphalt pavement facial cleft.
Description
Technical field:
The present invention relates to a kind of bituminous highway construction timber, relate in particular to the mat that places between roadbed latex bitumen layer and the asphalt concrete layer.
Background technology:
In highway construction, more and more pay attention to its service life and daily maintenance management.High-grade highway has all been abandoned the rigid pavement at present, adopts asphalt concrete pavement, and its result of use is more much better than cement material road surface.But also there are some defectives in asphalt concrete pavement in actual use; the cross section of asphalt concrete pavement is made up of roadbed, mulseal layer and asphalt concrete layer from top to bottom usually; the mulseal layer had both played the effect of waterproofing course; play the effect of bonding roadbed and bituminous concrete again; and the thickness of mulseal layer is less, though water resistance is better, can protect roadbed preferably under static load conditions; sink with protected against the effects of immersion, thereby cause creep of whole road surface or cracking.Because the tensile strength of mulseal layer is lower, under the effect of alternate load, be easy to produce at pressure spot between mulseal layer and the roadbed and separate, by prolonged and repeated pressurized creep, the mulseal layer can produce fracture, lose water-proof function, and the anti-permeability of bituminous concrete is bad, on every rainy day, rainwater can penetrate into the mulseal layer, floods roadbed then, roadbed after the immersion can produce sinkage, make between roadbed and the bituminous concrete and produce the gap, cause the bituminous concrete creeping deformation, finally cause the asphalt concrete pavement fracture.In order to overcome these defectives, people increase geo-grid between mulseal layer on the roadbed and asphalt concrete layer, to strengthen road surface cracking resistance seam ability.Though the cracking resistance seam ability on road surface is improved like this, but because the spacer holes of geo-grid is bigger, the adhesion of it and mulseal layer and bituminous concrete is lower, under the effect of alternate load, be easy to generate between geo-grid and mulseal layer and the bituminous concrete and separate, can destroy the mulseal layer equally, the roadbed water resistance is not thoroughly improved, still can sink after the roadbed immersion, people are seeking asphalt concrete pavement paver of new generation.
Summary of the invention:
The object of the present invention is to provide a kind of complex fiber roadbed thin felt.
Complex fiber roadbed thin felt of the present invention comprises glass chopped silk, the short chopping of polyester fiber and organic binder, and their weight percentage is respectively: glass chopped silk 40%～60%; The short chopping 20%～40% of polyester fiber; Organic binder 18%～30%.
Described glass chopped silk is an alkali-free, fibre diameter 5～13 μ m, and it is 12～24mm that weak point is cut length; The short chopping of described polyester fiber, fibre diameter 5～13 μ m, length 12mm～18mm; Described organic binder is the mixture that is deployed into by acrylic emulsion, thermosetting resin, KH560 coupling agent and water.
Described polyester fiber is a polypropylene fibre.
Weight ratio in the described organic binder between acrylic emulsion, thermosetting resin, KH560 coupling agent and the water is 8.6: 65.9: 0.4: 25.1.
Described complex fiber roadbed thin felt prepares raw materials used explanation:
1. described glass chopped silk is an alkali-free, fibre diameter 5～13 μ m, and it is 12～24mm that weak point is cut length, moisture content 8～12%; Commercial product, there are Danyang City, Jiangsu Province development glass Co., Ltd, Jiangsu Jushi Group Co., Ltd. etc. in main supplier.
Diameter 5～13 μ m of the short chopping of 2. described polyester fiber, the short length 12～18mm, moisture content, 8～12% of cutting; Commercial product, supplier: Jiangsu Province shining sun strong fiber Manufacturing Co., Ltd.
3. described dispersing agent, its chemistry is by name: hydroxyethylcellulose, its physico-chemical property is as follows:
Outward appearance is that white solid is Powdered, moisture content≤5%, and ash content≤10%, commercial product, main supplier is U.S.'s union carbide corporation, a Hubei Province auspicious safe cellulose Co., Ltd.
4. described surfactant is a quaternary ammonium salt cationic surfactant, and outward appearance is a white liquid, and its physico-chemical property is as follows: pH value is 4; Viscosity (20 ℃) is 200CP; Solid content is 25%; Dilution property: available water is diluted fully by arbitrary proportion.Commercial product, supplier: Shanghai Jingwei Chemical Co., Ltd..
5. raw materials used technical characterictic and the supplier of organic binder is described below:
Acrylic emulsion is a weak yellow liquid, pH value: 2.2～3.5, and viscosity (25 ℃): 100～500CP, solid content: 39～41%; Commercial product, main supplier is a BASF Shanghai Co., Ltd;
Thermosetting resin is faint yellow limpid liquid, pH value: 8.0～9.0, and viscosity (25 ℃): 31～52CP, solid content: 48～58%; Commercial product, there is Tianmo Group Co., Ltd., Changzhou etc. in main supplier;
The KH560 coupling agent is a silane coupler, chemical name: γ-glycidyl ether oxygen propyl trimethoxy silicane, and outward appearance is a colourless transparent liquid, purity is not less than 98%, commercial product, supplier Jintan City East China coupling agent factory.
The preparation method of complex fiber roadbed thin felt of the present invention is conventional wet method felt method:
It comprises slurry preparation, starching moulding, dipping gluing, dries and batch step:
1. mix the silk preparation: with glass chopped silk and the short chopping of polyester fiber is to mix at 6: 4 promptly to get after even to mix short fiber by weight;
2. slurry preparation: will mix short fiber, water, surfactant and dispersing agent and add evenly stirring in the agitator tank, the weight ratio of wherein mixing short fiber and water is 3～4: 1000, the addition of surfactant reaches 5%～10% to guarantee the air content in the slurries, and the content reference value of surfactant this moment in slurry is 90～100PPm; The dispersing agent addition reaches 10～12CP for well to guarantee slurry viscosity, and reference quantity is about per 1000 kg of water and adds 30～40kg;
3. starching moulding: with prepared slurry with measuring pump, flow box send into wet felt forming machine dewater wet felt, plain boiled water recycles;
4. flood gluing: wet felt is sent into impregnator by guipure and is carried out gluing, and used glue is an organic binder, and it is the mixture of acrylic emulsion, thermosetting resin, KH560 coupling agent and water, and its solid content is 41%～45%; Absorb unnecessary glue with the control spread with the vacuum draw case behind the impregnation, get the impregnation felt;
5. oven dry is batched: the impregnation felt is dried and batched, get finished product.
The performance of products obtained therefrom:
Outward appearance: white, smooth surface is smooth, and structure is fine and closely woven, and fiber is evenly distributed, quality: 100～200g/m
2Thickness is: 1.0～2.5mm; Longitudinal tensile strength: 〉=300N/5cm; Transverse tensile strength: 〉=200N/5cm.
Because described complex fiber roadbed thin felt is by glass chopped silk, short chopping of polyester fiber and organic binder are produced by wet processing, the advantage of such roadbed thin felt is integrated glass fibre mat and polyester fiber mat, its existing enough intensity, good flexible is arranged again, thickness is even, be easy to dipping, the compactness height, broad application temperature range not only, and also the coefficient of expansion is low, good stability, permeate the very capable of pitch, it has the physical characteristic of waterproof heat resistant and corrosion resistant by absorbing a deck that forms behind the bituminous material, and associativity is fine, and is not easily separated.It is placed on has increased the compressive strength of whole flexible pavement and the impact strength of anti-fluctuating load between mulseal layer and the asphalt concrete layer, improved the pliability of flexible pavement, the linkage function and the water-proof function of mulseal layer have been improved, stop rainwater to the soaking into of roadbed, fundamentally improved the creep resistance of asphalt concrete pavement.This complex fiber roadbed thin felt can stand the construction at high temperature of modified asphalt mixture, this high-temperature stability will provide one continuously to the road surface, indeformable waterproofing course, effectively prevent moisture penetration, thereby avoid the supercrust that causes because of moisture content infiltration and the damage of basic unit, has anti-permeability preferably: prevent and the delayed reflex crack, has very low elongation per unit length and instantaneous tensile strength, can effectively remove the stress at junction, road surface or crack place concentrates, reduce expansion and the upwards reflection of crack in the road surface, delayed the generation of reflection crack, prolong road application life, greatly reduce the road maintenance cost, this composite felt itself use of can also pulverizing and regenerate simultaneously.
Its range of application: newly-built and road widening improvement project; Old cement concrete pavement Laying Asphalt Surface Course; The repairing of bituminous pavement top-crack, old asphalt roads maintenance; The repairing of semi-rigid type base shrinkage crack.
The specific embodiment:
Be 150g/m below with the production specification
2Complex fiber roadbed thin felt is an example, and the concrete production method of invention is described:
1. raw material is prepared: the short chopping of alkali-free glass fibre of buying diameter 13 μ m; The short chopping of polypropylene fibre; Hydroxyethylcellulose (dispersing agent can be recycled); Surfactant (recycling); Acrylic emulsion; Thermosetting resin; The KH560 coupling agent.
2. slurry preparation: with glass chopped silk, the short chopping of polyester fiber, dispersing agent, surfactant and water put into the stainless steel basin evenly stir slurry, through being pumped into concrete slurry pond, the glass fiber in the slurry and the content of polyester fiber are 0.32% (percentage by weight); The addition of hydroxyethylcellulose (dispersing agent) reaches 10～12CP for well to guarantee slurry viscosity, is per 1000 premium on currency, 30～40Kg with reference to addition; The surfactant addition is to guarantee the slurry void fraction about 10%, and its content concn reference value in slurry is about 100ppm, joins the about 100m of slurry for the first time
3The plain boiled water of slurry and generation all can be recycled in the manufacturing process, add glass chopped silk, the short chopping of polyester fiber and a spot of hydroxyethylcellulose and surfactant but must constantly replenish, to keep the content and the slurry viscosity of glass chopped silk in the slurry, the short chopping of polyester fiber, surfactant.
3. organic binder preparation: add KH560 coupling agent and water in No. 1 stainless steel basin, stir, get coupling agent solution, the weight ratio of KH560 coupling agent and water is 17: 100; Add 100 liters in water earlier at No. 2 stainless steel basins, acrylic emulsion 314kg and thermosetting resin, the weight ratio between the three are 100: 314: 2422, at last the KH560 coupling agent solution for preparing in No. 1 stainless steel basin are pumped in No. 2 stainless steel basins, add 751 liters at last, stirring gets final product.
4. starching moulding: moulding guipure (the polyester individual layer net that prepared slurry is pumped into continuous operation by flow box, line footpath 0.5mm, 9～12 of density/cm), slurry is evenly dehydration on the guipure that tilts, composite fibre in the slurry is evenly distributed in and forms wet felt on the guipure, and isolated plain boiled water flows in the slurry pool and recycles, and wet felt is sent on the applying glue guipure of dipping system continuously by forming net, forming net tape speed 60m/min, the agitator tank liquid level is controlled at about 50%.
5. flood gluing: wet felt is gone into cement dipping machine, the organic binder glue enters in the adhesive applicator through overflow mechanism, the felt that will wet soaks into glue, after suction box aspirates unnecessary glue, wet felt is admitted to the drying stove oven dry, and cement dipping machine speed 60m/min, applying glue net are polyester individual layer net, line footpath 0.5mm, 8/cm of density.
6. oven dry is batched: adopt hot blast penetration convection furnace drying method to dry, and 100 ℃～250 ℃ of kiln temperatures, the mat finished product goes out to batch automatically behind the drying stove and carries out rolling.
The content and the specification difference of the just wherein glass chopped silk of the complex fiber roadbed thin felt of different size, the short chopping of polyester fiber, organic binder, its production method is identical with last example.
Claims (4)
1, a kind of complex fiber roadbed thin felt is characterized in that: it comprises glass chopped silk, the short chopping of polyester fiber and organic binder, and their weight percentage is respectively: glass chopped silk 40%～60%; The short chopping 20%～40% of polyester fiber; Organic binder 18%～30%.
2, according to the described complex fiber roadbed thin felt of claim 1, it is characterized in that: described glass chopped silk is alkali-free, fibre diameter 5～13 μ m, and it is 12～24mm that weak point is cut length; The short chopping of described polyester fiber, fibre diameter 5～13 μ m, length 12mm～18mm; Described organic binder is the mixture that is deployed into by acrylic emulsion, thermosetting resin, KH560 coupling agent and water.
3, according to the described complex fiber roadbed thin felt of claim 2, it is characterized in that: described polyester fiber is a polypropylene fibre.
4, according to the described complex fiber roadbed thin felt of claim 2, it is characterized in that: the weight ratio in the described organic binder between acrylic emulsion, thermosetting resin, KH560 coupling agent and the water is 8.6:65.9:0.4:25.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910116620A CN101545235A (en) | 2009-04-18 | 2009-04-18 | Complex fiber roadbed thin felt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910116620A CN101545235A (en) | 2009-04-18 | 2009-04-18 | Complex fiber roadbed thin felt |
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| CN101545235A true CN101545235A (en) | 2009-09-30 |
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| CN200910116620A Pending CN101545235A (en) | 2009-04-18 | 2009-04-18 | Complex fiber roadbed thin felt |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864673A (en) * | 2010-06-30 | 2010-10-20 | 南京金路土工复合材料有限公司 | Preparation method of composite strengthening anti-cracking cloth |
| CN102505556A (en) * | 2011-11-16 | 2012-06-20 | 中材金晶玻纤有限公司 | Flame-retardant and waterproof glass fiber wet mat |
| CN105723023A (en) * | 2013-10-16 | 2016-06-29 | Ocv智识资本有限责任公司 | Flexible non-woven mat |
| CN106192547A (en) * | 2016-07-13 | 2016-12-07 | 中材金晶玻纤有限公司 | Plasterboard special chemical fibre glass fibre belt and preparation method thereof |
| CN107990088A (en) * | 2017-09-30 | 2018-05-04 | 中材金晶玻纤有限公司 | A kind of 600 DEG C of high-temperature pipe spun-glass insulation felts and preparation method thereof |
-
2009
- 2009-04-18 CN CN200910116620A patent/CN101545235A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864673A (en) * | 2010-06-30 | 2010-10-20 | 南京金路土工复合材料有限公司 | Preparation method of composite strengthening anti-cracking cloth |
| CN101864673B (en) * | 2010-06-30 | 2012-05-09 | 南京金路土工复合材料有限公司 | Preparation method of composite strengthening anti-cracking cloth |
| CN102505556A (en) * | 2011-11-16 | 2012-06-20 | 中材金晶玻纤有限公司 | Flame-retardant and waterproof glass fiber wet mat |
| CN102505556B (en) * | 2011-11-16 | 2014-03-26 | 中材金晶玻纤有限公司 | Flame-retardant and waterproof glass fiber wet mat |
| CN105723023A (en) * | 2013-10-16 | 2016-06-29 | Ocv智识资本有限责任公司 | Flexible non-woven mat |
| CN106192547A (en) * | 2016-07-13 | 2016-12-07 | 中材金晶玻纤有限公司 | Plasterboard special chemical fibre glass fibre belt and preparation method thereof |
| CN107990088A (en) * | 2017-09-30 | 2018-05-04 | 中材金晶玻纤有限公司 | A kind of 600 DEG C of high-temperature pipe spun-glass insulation felts and preparation method thereof |
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Application publication date: 20090930 |