A kind of road polyester fiber and preparation method thereof
A polyester fiber and road technology, which is applied in the fields of asphalt mixture paving, road polyester fiber and its preparation, can solve the problems of limited improvement range, insufficient high temperature resistance, poor aging resistance of asphalt mixture, etc. , to extend the service life and improve the effect of aging resistance
Inactive Publication Date: 2017-07-28
NANJING TONGAN ROAD ENG +1
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Problems solved by technology
First of all, polyester fiber is easy to oxidize under high temperature mixing, and the high temperature resistance is insufficient; secondly, the asphalt mixture added with polyester fiber has poor aging resistance and short service life; finally, the adhesion between conventional polyester fiber and asphalt is average, As a result, although the road performance of asphalt mixture has been improved, the improvement range is limited, and it has been unable to meet the needs of increasing traffic volume. This is also the main reason for the poor fatigue performance of asphalt mixture with polyester fiber
Method used
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Embodiment
[0017] Embodiment: the preparation of the asphalt mixture (A) that adds the road polyester fiber: be that the polyester fiber body of 80%~90% by weight and the fiber resin of 5%~15% by weight are in the percentage by weight of Under the action of 3% to 5% anti-aging agent, polycondensation reaction and solid-state polymerization are carried out, and the polyester chips generated by solid-state polymerization are melt-spun and stretched to obtain road-use polyester fibers, and the road-use polyester fibers obtained above are added to In asphalt mixture, the dosage is 0.3%.
[0018] Preparation of asphalt mixture (B) mixed with polyester fibers: melt-spinning and stretching polyester chips produced by polycondensation of polyester fibers to obtain polyester fibers, adding the polyester fibers obtained above to the asphalt mixture In, the dosage is 0.3%.
[0019] Asphalt mixture (C): polyester fiber and polyester fiber are not added to the asphalt mixture.
[0020] The raw mate...
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The invention discloses a polyester fiber for road use and a preparation method thereof, which is characterized in that it comprises the following steps of mixing a polyester fiber body with a weight percentage of 80% to 90% and a fiber resin with a weight percentage of 5% to 15% Polycondensation reaction and solid-state polymerization are carried out under the action of 3% to 5% anti-aging agent by weight, and the polyester chips generated by solid-state polymerization are melt-spun and stretched to obtain road-use polyester fibers, and the road-use polyester fibers The amount added to the asphalt mixture is 0.25% to 0.3%, and the polyester fiber body is formed by esterification of terephthalic acid and ethylene glycol ester at a mass ratio of 2:3; a road use according to the present invention The polyester fiber can greatly improve the aging resistance, high temperature performance and fatigue performance of the asphalt mixture through the polyester fiber body, fiber resin and anti-aging agent, thereby prolonging the service life of the asphalt mixture.
Description
technical field [0001] The invention belongs to the field of road engineering, and in particular relates to a polyester fiber for road use and a preparation method thereof, and is especially suitable for asphalt mixture pavement with higher road performance requirements for asphalt pavement. Background technique [0002] At present, with social progress and economic development, the traffic volume is gradually increasing, and the trend of overloading and overloading is becoming more and more serious, and the asphalt pavement is under unprecedented pressure. Therefore, many new technologies have emerged to improve the performance of asphalt pavement, such as using high-quality modified asphalt, adding additives, selecting durable asphalt pavement, etc., which includes adding an appropriate amount of polyester fiber to the asphalt mixture. [0003] The polyester fibers currently added to the asphalt mixture are mainly polyethylene terephthalate (PET) fibers, that is, fibers ob...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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IPC IPC(8): D01F6/82C08G69/44C04B26/26
Inventor 余波王力吴明亮祝学成羊林林
Owner NANJING TONGAN ROAD ENG