CN109942860A

CN109942860A - A kind of fire engineering CPVC pipe and preparation method thereof

Info

Publication number: CN109942860A
Application number: CN201910155570.0A
Authority: CN
Inventors: 蔡成云
Original assignee: Huaya Plastic Industry (taicang) Co Ltd
Current assignee: Huaya Plastic Industry (taicang) Co Ltd
Priority date: 2019-03-01
Filing date: 2019-03-01
Publication date: 2019-06-28

Abstract

The present invention provides a kind of fire engineering CPVC pipe and preparation method thereof, and the CPVC pipe includes: CPVC base tube；It is set in turn in epoxy powder layer, adhesive layer, flame-retardant layer, refractory layer, oxidation prevention layer, antistatic layer, erosion resistant coating and the protection glue-line of the CPVC base tube outer wall from the inside to the outside；It is set to the liner layer of the CPVC base tube inner wall；The flame retardant coating includes the ingredient of following parts by weight: polyurethane resin: 30 ~ 40 parts, methyl methacrylate: 25 ~ 35 parts, butyl acrylate: 10 ~ 15 parts, acrylamide: 10 ~ 15 parts, polyvinyl alcohol: 10 ~ 15 parts, ammonium polyphosphate: 10 ~ 15 parts, cellulose acetate: 15 ~ 25 parts, defoaming agent: 1 ~ 5 part, silane coupling agent: 1 ~ 5 part, deionized water: 60 ~ 70 parts.The fire engineering is managed with CPVC has excellent fire retardant performance, limited propagation of flame or low smoke performance, improved corrosion performance, good mechanical strength, excellent weatherability, wearability.

Description

A kind of fire engineering CPVC pipe and preparation method thereof

Technical field

The invention belongs to fire engineering pipe fitting technical fields, and in particular, to a kind of fire engineering managed with CPVC and its Preparation method.

Background technique

Fire protection pipeline is as its name suggests the pipe-line system established for fire-fighting, due to specific demand, the thickness of fire protection pipeline There is particular/special requirement with material, and spray red paint, conveys fire demand water.Since fire protection pipeline often remains static, also because This is more stringent to requirements for pipes, and pipeline needs compression resistance, corrosion-resistant, and high temperature resistance is good.

However, used fire demand water is mostly tap water in China's fire main, it is big due to containing in tap water The bacterium of amount or corrosive impurity are also easy to produce a large amount of scales or attachment and then block pipeline, in addition, domestic tap water is most Using chlorination mode, erosion is also resulted in pipeline.

Fire-fighting sprinkling tubing should be selected according to design requirement, generally use zinc-plated carbon steel tubing and pipe fitting, the inside and outside plating of tube wall Zinc is uniform, non-corroding, without flash, part it is unbiased plus, phenomena such as side buckle, screw thread is not complete, angle is not allowed.

Wherein, chliorinated polyvinyl chloride (CPVC) is the further chlorination modified product of polyvinyl chloride (PVC), chlorinity Generally 65% ~ 72% (volume fraction).CPVC is its corrosion resistance, resistance to other than many excellent performances for having PVC concurrently Hot, soluble, anti-flammability, mechanical strength etc. are greatly improved than PVC, thus CPVC is the novel-section of function admirable Material, is widely used in the fields such as building, chemical industry, metallurgy, shipbuilding, electric appliance, weaving, application prospect is very wide.

CPVC has brilliant high temperature resistant, anticorrosive and anti-flammability, and compared with other thermoplastic engineering plastics, price It is relatively low.Therefore the purposes of CPVC is very extensive, is widely used in house, hotel, the hot and cold water conveying in restaurant and industry pipe Road water-carriage system；The building materials such as cable tube, profile doors & windows；Ornament materials and vehicle, lamps and lanterns material in aircraft；It can be by CPVC Plate is welded into different equipment；In addition, being also widely used in electronics industry.

The CPVC pipe-line system being made of CPVC tubing is widely used in different field, as metal processing, paper pulp and Paper-making industry, chemical agent processing, trade waste processing, electronics processing industry, manufacture of semiconductor, copper foil production, chlor-alkali plant, The fields such as power plant, incinerator, food and drink processing, biotechnology, pure water, ultrapure water application, however, CPVC tubing is for disappearing Anti- pipeline is but more rare.

Extinguishing pipe is arrived, the current country is primarily present following patent document:

Chinese patent Authorization Notice No.: CN204611114U discloses a kind of double impedance composite extinguishing pipes of degerming antiscale, including Steel pipe, outer surface of steel tube are coated with anti-corrosion epoxy resin layer, and anti-corrosion epoxy resin layer outer surface is coated with modified epoxy layer, Steel pipe internal-surface is equipped with the epoxy resin layer of addition antibacterial agent.The present invention can effectively inhibit and kill the bacterium etc. of inner wall of the pipe Microorganism keeps duct cleaning, prevents its metabolic waste from corroding the aggregation fouling with dirt, not only has excellent anti-corrosion energy Power, while modified epoxy layer has good mechanical protection ability, has structure simple, long service life, mechanical protection The features such as ability is good, environmental protection and economy, entire product meet national all standard.It is killed although the extinguishing pipe that the patent provides has Bacterium, corrosion resistance, but its fire retardant performance mostly important as extinguishing pipe and common extinguishing pipe difference are little.

Summary of the invention

Above-mentioned to solve the problems, such as, the purpose of the present invention is to provide a kind of fire engineerings to be managed with CPVC, described CPVC pipe has excellent fire retardant performance, limited propagation of flame or low smoke performance, improved corrosion performance, good machine Tool intensity, excellent weatherability, wearability.

In order to achieve the above objectives, the technical scheme is that

A kind of fire engineering is managed with CPVC, and the CPVC pipe includes: CPVC base tube；It is set in turn in the CPVC base from the inside to the outside Epoxy powder layer, adhesive layer, flame-retardant layer, refractory layer, oxidation prevention layer, antistatic layer, erosion resistant coating and the protection glue-line of pipe outer wall；Setting In the liner layer of the CPVC base tube inner wall；The flame retardant coating includes the ingredient of following parts by weight: polyurethane resin: 30 ~ 40 Part, methyl methacrylate: 25 ~ 35 parts, butyl acrylate: 10 ~ 15 parts, acrylamide: 10 ~ 15 parts, polyvinyl alcohol: 10 ~ 15 Part, ammonium polyphosphate: 10 ~ 15 parts, cellulose acetate: 15 ~ 25 parts, defoaming agent: 1 ~ 5 part, silane coupling agent: 1 ~ 5 part, deionization Water: 60 ~ 70 parts.

Further, the liner layer includes being set in turn in the inner coating of the CPVC base tube inner wall from the inside to the outside and dredging Water layer.

Further, the inner coating is that epoxy coating, polyoxyethylene coating or epoxy thickness starch paint layer.

Further, the hydrophobic layer is organic silicon hydrophobic layer, zirconium oxide coating or polytetrafluorethylecoatings coatings.

Further, the adhesive layer is epoxy resin gluing layer.

Further, the defoaming agent is organic silicone oil.

Further, the refractory layer is polytetrafluoroethylene (PTFE) refractory layer or polyesteramide refractory layer.

Further, the oxidation prevention layer is nanometer titanium dioxide coating；The silane coupling agent is vinyl triethoxyl Silane or diphenylphosphinoethyl triethoxysilane.

Further, the antistatic layer is UV antistatic coating；The protection glue-line is ceramic silastic-layer.

Meanwhile the present invention also provides a kind of fire engineering preparation method of CPVC pipe, the preparation method includes as follows Step:

1) CPVC base tube is taken；

2) flame retardant coating is prepared, the preparation method of the flame retardant coating includes the following steps: to take polyurethane resin, methacrylic acid Stirred tank is added in the deionized water of methyl esters, butyl acrylate and 30 ~ 35wt%, stirs 30 with 1200 ~ 1400 revs/min of revolving speed ~ 40 minutes, acrylamide, polyvinyl alcohol, ammonium polyphosphate, cellulose acetate, defoaming agent, silane coupling agent and residue is added and goes Ionized water is stirred 20 ~ 30 minutes with 1500 ~ 1600 revs/min of revolving speed, is stood 30 ~ 60 minutes, is obtained the flame retardant coating；

3) epoxy powder layer, adhesive layer, flame-retardant layer, refractory layer, resistance oxygen successively are sprayed in the CPVC base tube outer wall from the inside to the outside Layer, antistatic layer, erosion resistant coating and protection glue-line；

4) liner layer described in Yu Suoshu CPVC base tube inner-wall spraying, obtains the fire engineering and is managed with CPVC.

The beneficial effects of the present invention are:

The fire engineering is with CPVC pipe to most of sour (such as sulfuric acid, phosphoric acid, nitric acid, hydrochloric acid), alkali and salt and aliphatic Hydrocarbon there is excellent tolerance, can not have to consider the corrosion-resistant problem that must be taken into consideration of metal equipment, for a long time Exposure install and use under the conditions of be able to maintain load performance, have higher tensile strength, the lower coefficient of heat conduction, warp Taber test, has excellent wearability, has excellent fire retardant performance, extremely limited propagation of flame or low Smoke performance is measured by UL723/ASTM E84, and open fire Sprawl Indices are 0, and smoke creating ratio is 0；Limit oxygen index is 60, It can only passively light, can not be naturally, flash point be 482 DEG C, only at 482 DEG C or more, the extinguishing pipe is likely to be ignited.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of fire engineering CPVC pipe provided by the present invention.

Specific embodiment

Below by specific embodiment, the present invention is described further, but embodiment is not intended to limit protection of the invention Range.

Referring to Fig.1, a kind of fire engineering of the present invention is managed with CPVC, and the CPVC pipe includes: CPVC base tube 1；By It is interior to the epoxy powder layer 2, adhesive layer 3, flame-retardant layer 4, the refractory layer 5, oxidation prevention layer that are set in turn in 1 outer wall of CPVC base tube outside 6, antistatic layer 7, erosion resistant coating 8 and protection glue-line 9；It is set to the liner layer 10 of 1 inner wall of CPVC base tube；The flame retardant coating Ingredient including following parts by weight: polyurethane resin: 30 ~ 40 parts, methyl methacrylate: 25 ~ 35 parts, butyl acrylate: 10 ~ 15 parts, acrylamide: 10 ~ 15 parts, polyvinyl alcohol: 10 ~ 15 parts, ammonium polyphosphate: 10 ~ 15 parts, cellulose acetate: 15 ~ 25 parts, disappear Infusion: 1 ~ 5 part, silane coupling agent: 1 ~ 5 part, deionized water: 60 ~ 70 parts.

Further, the liner layer 10 includes the inner coating 101 for being set in turn in the CPVC base tube inner wall 1 from the inside to the outside With hydrophobic layer 102.

In addition, the inner coating 101 is that epoxy coating, polyoxyethylene coating or epoxy thickness starch paint layer.

Separately have, the hydrophobic layer 102 is organic silicon hydrophobic layer, zirconium oxide coating or polytetrafluorethylecoatings coatings.

Again, the adhesive layer 3 is epoxy resin gluing layer, and the flame-retardant layer 4 is halogen-free flameproof layer.

Further more, the refractory layer 5 is polytetrafluoroethylene (PTFE) refractory layer or polyesteramide refractory layer.

And the oxidation prevention layer 6 is nanometer titanium dioxide coating.

In addition, the antistatic layer 7 is UV antistatic coating；The protection glue-line 8 is ceramic silastic-layer.

1) CPVC base tube is taken；

A kind of fire engineering installation method of CPVC pipe of the present invention, includes the following steps:

1) it cuts

The fire engineering is radially cut with saw with wheel-type plastic cement tubing cutter, electric saw or plastic pipe cutting to be managed with CPVC；

2) burr removing

Soft flocks inside and outside the pipe end after cutting is removed using chamfer tool or file, tube end maching chamfering；

3) detergent is smeared

Detergent is uniformly applied to pipe end outer wall and accessory set section inner wall, tube body is impregnated with and softens；

4) solvent viscose is smeared

Viscose is smeared with the bristle brush of caliber half size, pipe end applies thick-layer viscose, and accessory set section inner face applies medium thickness viscose；

5) it combines

It after being painted with viscose, inserts a tube into accessory set and saves and rotate 1/4 circle, contacted with set section bottom, combination of interfaces maintains 20 ~ 30s It stands, is fixed, completing the installation of the fire engineering CPVC pipe.

The fire engineering is with CPVC pipe to most of sour (such as sulfuric acid, phosphoric acid, nitric acid, hydrochloric acid), alkali and salt and rouge The hydrocarbon of fat race has excellent tolerance, can not have to the corrosion-resistant problem for considering that metal equipment must be taken into consideration, long The exposure of time is able to maintain load performance under the conditions of installing and using, have higher tensile strength, the lower coefficient of heat conduction, It is tested through Taber, there is excellent wearability, there is excellent fire retardant performance, extremely limited propagation of flame or low Smoke performance is played, is measured by UL723/ASTM E84, open fire Sprawl Indices are 0, and smoke creating ratio is 0；Limit oxygen index is 60, it can only passively light, can not be naturally, flash point be 482 DEG C, only at 482 DEG C or more, the extinguishing pipe is likely to by point Combustion.

It should be noted that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although referring to compared with Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to the technology of invention Scheme is modified or replaced equivalently, and without departing from the range of technical solution of the present invention, should all be covered in power of the invention In sharp claimed range.

Claims

1. a kind of fire engineering is managed with CPVC, which is characterized in that the CPVC pipe includes:

CPVC base tube；

It is set in turn in epoxy powder layer, adhesive layer, flame-retardant layer, refractory layer, the resistance oxygen of the CPVC base tube outer wall from the inside to the outside Layer, antistatic layer, erosion resistant coating and protection glue-line；

It is set to the liner layer of the CPVC base tube inner wall；

The flame retardant coating includes the ingredient of following parts by weight: polyurethane resin: 30 ~ 40 parts, methyl methacrylate: 25 ~ 35 Part, butyl acrylate: 10 ~ 15 parts, acrylamide: 10 ~ 15 parts, polyvinyl alcohol: 10 ~ 15 parts, ammonium polyphosphate: 10 ~ 15 parts, acetic acid Cellulose: 15 ~ 25 parts, defoaming agent: 1 ~ 5 part, silane coupling agent: 1 ~ 5 part, deionized water: 60 ~ 70 parts.

2. a kind of fire engineering according to claim 1 is managed with CPVC, which is characterized in that the liner layer include by it is interior extremely It is set in turn in the inner coating and hydrophobic layer of the CPVC base tube inner wall outside.

3. a kind of fire engineering according to claim 2 is managed with CPVC, which is characterized in that the inner coating is epoxy resin Coating, polyoxyethylene coating or epoxy thickness starch paint layer.

4. a kind of fire engineering according to claim 2 is managed with CPVC, which is characterized in that the hydrophobic layer is dredged for organosilicon Water layer, zirconium oxide coating or polytetrafluorethylecoatings coatings.

5. a kind of fire engineering according to claim 1 is managed with CPVC, which is characterized in that the adhesive layer is epoxy resin Adhesive layer.

6. a kind of fire engineering according to claim 1 is managed with CPVC, which is characterized in that the defoaming agent is organosilicon Oil.

7. a kind of fire engineering according to claim 1 is managed with CPVC, which is characterized in that the refractory layer is polytetrafluoroethyl-ne Alkene refractory layer or polyesteramide refractory layer.

8. a kind of fire engineering according to claim 1 is managed with CPVC, which is characterized in that the oxidation prevention layer is nano-silica Change titanium coating；The silane coupling agent is vinyltriethoxysilane or diphenylphosphinoethyl triethoxysilane.

9. a kind of fire engineering according to claim 1 is managed with CPVC, which is characterized in that the antistatic layer resists quiet for UV Electrocoat；The protection glue-line is ceramic silastic-layer.

10. a kind of preparation method of fire engineering any one of claims 1 to 9 CPVC pipe, which is characterized in that The preparation method includes the following steps:

1) CPVC base tube is taken；