CN205278582U - Flame retardant plastics pipeline - Google Patents

Abstract

The utility model discloses a but the high -temperature resistance plastice pipeline has been solved has been provided with the mode of protective film in inside, just suffers destruction very easily after the inside sharp -pointed object of flowing through of pipeline, results in the damage of whole protective film, and this sets up the fire -retardant film of the first bittern of multilayer and can not play effect good very much in the middle of the plastic tubing in addition. Its technical scheme main points are high -temperature resistance plastice pipelines, and its characterized in that, this high -temperature resistance plastice pipeline be by interior and set gradually corrosion -resistant layer, basic unit, fire -retardant layer and inoxidizing coating outward, the outside cladding of fire -retardant layer has the fire -retardant layer of foam, the thickness on fire -retardant layer is 0.4mm~0.6mm, the both ends of high temperature plastic conduit all are provided with the flaring. Reached and can be effectual avoid the chemical article of aggressivity to the corruption of plastic conduit through the glass steel layer in the inner wall setting, had good corrosion resisting property to be provided with fire -retardant layer and inoxidizing coating outside the basic unit, it is good to have a flame retardant efficiency.

Description

A kind of flame retardant plastics pipeline

Technical field

This utility model relates to field, and in particular, it relates to a kind of flame retardant plastics pipeline.

Background technology

PVC is the general-purpose plastics of world's second largest yield, also it is a kind of plastics that purposes is the widest, also referred to as Merlon, current plastic tube major part adopts polrvinyl chloride to make, not there is fire-retardant function, when transporting in the middle of flammable chemical substance in plastic conduit, once periphery breaking out of fire or close burning things which may cause a fire disaster, therefore general plastic tube can burn, if conveying is combustible material in plastic tube, this can increase the weight of fire the condition of a disaster, therefore have and a kind of can just be particularly important by fire-retardant plastic tube, plastic tube its inner surface after a long time use can corrode simultaneously, not easily remove. therefore, for solving the problems referred to above, a kind of new technical scheme of special offer.

Such as application number be 201420404958.2 utility model application disclose a kind of a kind of flame retardant plastics pipe; described plastic tube is provided with the first halogen fire-retardant film, the second halogen fire-retardant film between outer surface to inner surface, and the inner surface of described plastic tube is provided with protective film. This utility model simple in construction, rational in infrastructure, by arranging the first halogen fire-retardant film and the second halogen fire-retardant film in the interlayer of plastic tube, when breaking out of fire the condition of a disaster, first halogen fire-retardant film and the second halogen fire-retardant film can stop the burned generation breakage of plastic tube, thus it is excessive to protect the dangerous substance in plastic tube not occur, it is to avoid the further expansion of fire the condition of a disaster; By arranging protective film on the inner surface of plastic tube, after plastic tube uses for a long time, it is possible to place inner surface and corrode. But it is being internally provided with the mode of protective film; it is easy to after pipe interior flows through sharp-pointed object just wreck; cause the damage of whole protective film, and this arranges multilamellar the first halogen fire-retardant film and can not play particularly preferred effect in the middle of plastic tube.

Utility model content

According to the deficiencies in the prior art, this utility model provides that a kind of flame retardant effect is good and inwall is not easy the plastic conduit that is corroded.

For achieving the above object, this utility model provides following technical scheme: a kind of flame retardant plastics pipeline, it is characterized in that, this flame retardant plastics pipeline is disposed with anti-corrosion layer, basic unit, flame-retardant layer and overcoat from inside to outside, foam flame-retardant layer it is coated with outside described flame-retardant layer, the thickness of described flame-retardant layer is 0.4mm ~ 0.6mm, and the two ends of described high temperature plastics pipeline are provided with enlarging.

Further, described anti-corrosion layer is frp layer.

Further, the thickness of described basic unit is 2mm ~ 5mm.

The beneficial effects of the utility model are in that, the corrosion to plastic conduit of the rodent chemical substance can be effectively avoided by the frp layer arranged at inwall, there is good decay resistance, and be outside equipped with flame-retardant layer and overcoat in basic unit, there is flame retardant effect good.

Accompanying drawing explanation

Fig. 1 is a kind of flame retardant plastics pipeline external schematic diagram of embodiment 1;

Fig. 2 is the cross sectional representation of the flame retardant plastics pipeline of embodiment 1;

Fig. 3 is the cross sectional representation of the flame retardant plastics pipeline of embodiment 2.

Description of reference numerals: anti-corrosion layer 1, basic unit 2, flame-retardant layer 3, overcoat 4, foam flame-retardant layer 5.

Detailed description of the invention

Below in conjunction with accompanying drawing and by specific embodiment, this utility model being made auspicious further stating, following example are illustrative, are not determinate, it is impossible to limit protection domain of the present utility model with this.

With reference to accompanying drawing 1, the embodiment one that 2 provide, a kind of flame retardant plastics pipeline that this utility model provides, its cross section is circular, it is provided with enlarging at two ends, anti-corrosion layer 1 it is provided with from inside to outside at plastic conduit, basic unit 2, flame-retardant layer 3 and overcoat 4, anti-corrosion layer 1 adopts frp layer 1, the material of frp layer 1 is fiber-reinforced plastic, frp layer 1 is wound around yarn by unsaturated polyester resin and glass fibre yarn or glass, glass-fiber-fabric solidification forms, by uniform application in the middle of high temperature hot pressing in the middle of basic unit, glass-fiber-fabric and the mixed layer that formed, concrete mode is: the surface acetone and other organic solvent in polypropylene pipe basic unit 2 removes inner wall surface dirt, the surface melting of polypropylene pipe basic unit is made afterwards with the flame temperature high temperature spray gun more than 300 DEG C, glass-fiber-fabric suppressed simultaneously and fuse with melted polypropylene pipe substrate surface, glass-fiber-fabric space is made to be filled up by polypropylene thermal is tolerant, the advantage that this its feature has high-strength light, weight not quite will not produce impact to installing, and intensity is high, surface is not easy to be scratched, corrosion-resistant, if passing into some chemical reagent in the middle of sewer, plastic conduit will be caused large effect, and innermost layer is provided with frp layer 1 and is avoided that chemical reagent is on its impact, thus ensure that inwall keeps smooth state in for a long time, will not produce to scratch, the situation such as be corroded, water and some foreign material that resident discharges also can pass through plastic conduit smoothly. in the middle of the present embodiment, the thickness of frp layer 1 is 0.4mm ~ 0.6mm, it is preferred that adopt 0.6mm.

Basic unit is layer of PVC, and the thickness adopted in the middle of the present embodiment is 4mm, is coated with flame-retardant layer outside basic unit, flame-retardant layer selects PES polyethersulfone resin in the middle of the present embodiment, its hot modification temperature is at 200��220 DEG C, and using temperature continuously is 180��200 DEG C, and Undterwriter's Laboratory temperature index is 180 DEG C. Hydrolytic resistance is resistant to 150��160 DEG C of hot water or steam, at high temperature the erosion of also acid and alkali, alkali. Its modulus is almost constant at-100 DEG C to 200 DEG C, all better than any thermoplastic resin more than 100 DEG C especially. Creep resistance its creep resistance within the scope of 180 DEG C of temperature below is one the most excellent in the middle of thermoplastic resin, and particularly glass fiber reinforcement PES resin is not worse than some thermosetting resin. Dimensional stability linear expansion coefficient is little, and its temperature reliability also little be its feature. Being characterized as being 30% glass fiber reinforcement PES resin, its linear expansion coefficient only has 2.3 �� 10-5/ DEG C, and until 200 DEG C still can keep value akin with aluminum. Resistance to impact has the resistance to impact identical with Merlon. The resin not strengthened can be riveted, but tapering otch is more sensitive, and therefore design is upper it should be noted that so being coated with overcoat outside flame-retardant layer, can better protect flame-retardant layer by being clipped in by flame-retardant layer in the middle of overcoat and basic unit.

With reference to the embodiment two that accompanying drawing 3 provides, this plastic conduit is provided with enlarging at two ends, being followed successively by anti-corrosion layer 1, basic unit 2, flame-retardant layer 3, foam flame-retardant layer 5 and overcoat 4 in the middle of the present embodiment from the inside to the outside, in the middle of the present embodiment, the thickness of frp layer 1 is for adopting 0.6mm. It is coated with basic unit 2 at frp layer 1 outer layer; basic unit 2 is common pvc tube layer; thickness in the middle of the present embodiment adopts 2mm; frp layer 1 in the middle of the present embodiment; preferably adopt 0.4mm; flame-retardant layer selects PES polyethersulfone resin in the middle of the present embodiment; foam flame-retardant layer it is coated with outside flame-retardant layer; arrange that to play flame retardant effect better by foam flame-retardant layer and PES polyethersulfone resin flame-retardant layer two-layer; outside flame-retardant layer, it is coated with overcoat, can better protect flame-retardant layer by being clipped in by flame-retardant layer in the middle of overcoat and basic unit.

The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to above-described embodiment, and all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model. It should be pointed out that, for those skilled in the art, without departing from the some improvements and modifications under this utility model principle premise, these improvements and modifications also should be regarded as protection domain of the present utility model.

Although more employing the terms such as anti-corrosion layer, basic unit, flame-retardant layer, overcoat, foam flame-retardant layer herein, but it is not precluded from using the probability of other term. These terms are used to be only used to describe and explain essence of the present utility model more easily; It is all contrary with this utility model spirit for being construed as any additional restriction.

Claims (3)

1. a flame retardant plastics pipeline, it is characterized in that, this flame retardant plastics pipeline is disposed with anti-corrosion layer, basic unit, flame-retardant layer and overcoat from inside to outside, foam flame-retardant layer it is coated with outside described flame-retardant layer, the thickness of described flame-retardant layer is 0.4mm ~ 0.6mm, and the two ends of described high temperature plastics pipeline are provided with enlarging.

2. a kind of flame retardant plastics pipeline according to claim 1, it is characterised in that described anti-corrosion layer is frp layer.

3. a kind of flame retardant plastics pipeline according to claim 1, it is characterised in that the thickness of described basic unit is 2mm ~ 5mm.