阅读说明：本技术 一种阻燃玻璃钢聚氨酯保温管 (Flame-retardant glass fiber reinforced plastic polyurethane thermal insulation pipe ) 是由 周雪 于 2020-12-15 设计创作，主要内容包括：本发明涉及一种阻燃玻璃钢聚氨酯保温管,包括玻璃钢管本体,玻璃钢管本体一端设置有插接头,另一端设置有可与插接头配合的插接口,所述的玻璃钢管本体由阻燃性耐高温玻璃钢复合材料制备而成；所述的玻璃钢管本体的内表面覆涂有耐高温反腐材料涂层,所述的玻璃钢管本体的外周壁从内到外依次包覆有聚氨酯保温层和防水保护壳层。本发明的阻燃玻璃钢聚氨酯保温管,不仅保温效果好,热损耗低且不容易折断或变形、且具有阻燃性能的优点。(The invention relates to a flame-retardant glass fiber reinforced plastic polyurethane thermal insulation pipe which comprises a glass fiber reinforced plastic pipe body, wherein one end of the glass fiber reinforced plastic pipe body is provided with a plug connector, the other end of the glass fiber reinforced plastic pipe body is provided with a plug connector matched with the plug connector, and the glass fiber reinforced plastic pipe body is prepared from a flame-retardant high-temperature-resistant glass fiber reinforced plastic composite material; the inner surface of the glass steel tube body is coated with a high-temperature-resistant anti-corrosion material coating, and the peripheral wall of the glass steel tube body is sequentially coated with a polyurethane heat-insulating layer and a waterproof protective shell layer from inside to outside. The flame-retardant glass fiber reinforced plastic polyurethane heat-insulating pipe has the advantages of good heat-insulating effect, low heat loss, difficulty in breaking or deforming and flame retardance.)

1. The utility model provides a fire-retardant glass steel polyurethane insulating tube, includes glass steel pipe body (1), and glass steel pipe body (1) one end is provided with bayonet joint (11), and the other end is provided with can with bayonet joint (11) complex interface (12), its characterized in that: the glass fiber reinforced plastic pipe body (1) is prepared from a flame-retardant high-temperature-resistant glass fiber reinforced plastic composite material; the inner surface of the glass steel tube body (1) is coated with a high-temperature-resistant anti-corrosion material coating (2), and the peripheral wall of the glass steel tube body (1) is sequentially coated with a polyurethane heat-insulating layer (3) and a waterproof protective shell layer (4) from inside to outside.

2. The flame-retardant glass fiber reinforced plastic polyurethane thermal insulation pipe according to claim 1, wherein the preparation method of the flame-retardant high-temperature-resistant glass fiber reinforced plastic composite material comprises the following steps:

step one, preparing a self-made flame-retardant resin;

weighing the raw materials according to the mass parts, putting 15-20 parts of novolac epoxy resin, 20-25 parts of self-made flame retardant resin, 15-20 parts of bisphenol A epoxy vinyl resin, 7-9 parts of dibutyl phthalate, 5-7 parts of ethylenediamine, 1-4 parts of ethanol and 10-12 parts of calcium carbonate into stirring equipment, and adding 60-70 parts of glass fiber after uniformly stirring;

pouring the mixture into a member mold, and pressurizing the mixture at the temperature of 200 and 250 ℃ to prepare the flame-retardant high-temperature-resistant glass fiber reinforced plastic composite material.

3. The flame-retardant glass fiber reinforced plastic polyurethane thermal insulation pipe as claimed in claim 2, wherein the self-made flame-retardant resin of the first step comprises a component A and a component B, wherein the component A comprises the following components in parts by mass:

the component B comprises peroxy cyclohexanone and a catalyst, wherein the peroxy cyclohexanone is 1-2 times of the addition amount of the unsaturated polyester resin, and the catalyst is 2-3% of the addition amount of the unsaturated polyester resin.

4. The flame-retardant glass fiber reinforced plastic polyurethane thermal insulation pipe as claimed in claim 3, wherein the unsaturated polyester resin is 191 type unsaturated polyester resin.

5. The fire-retardant glass fiber reinforced plastic polyurethane thermal insulation pipe according to claim 3, wherein the coupling agent is a solution of titanate and styrene in a ratio of 1: 3.

6. The flame-retardant glass fiber reinforced plastic polyurethane thermal insulation pipe as claimed in claim 3, wherein the catalyst is cobalt naphthenate: styrene 1: 1.

7. The flame-retardant glass fiber reinforced plastic polyurethane thermal insulation pipe as claimed in any one of claims 1 to 6, wherein the waterproof protective shell layer (4) is a high-density polyethylene protective shell layer or a glass fiber reinforced plastic protective shell layer.

8. The flame-retardant glass fiber reinforced plastic polyurethane insulation pipe according to any one of claims 1 to 6, wherein the polyurethane insulation layer (3) comprises a first woven layer (31), a polyurethane foam layer (32) and a second woven layer (33) which are arranged in sequence.

9. The flame-retardant glass fiber reinforced plastic polyurethane thermal insulation pipe as claimed in any one of claims 1 to 6, wherein the end surfaces of the polyurethane thermal insulation layer (3) and the waterproof protective shell layer (4) are provided with high-density polyethylene protective shell layers.

Technical Field

The invention relates to the technical field of pipeline production, in particular to a flame-retardant glass fiber reinforced plastic polyurethane thermal insulation pipe.

Background

At present, common steel pipes or composite pipes are used as base pipes for conveying some fluid remotely, and then heat-insulating protective materials are wound on the outer walls of the base pipes. The mode causes poor integrity of the heat-insulating protective material and the base pipe, and the heat-insulating protective material and the base pipe are easy to loosen to generate a gap during installation. Meanwhile, the delivery pipe is easy to break or deform due to external pressure and the like. In order to solve the above problems, polyurethane thermal insulation pipes made of glass fiber reinforced plastics have appeared on the market. However, in a factory or the like, most of the conveying heat preservation pipes are installed outdoors, particularly in a chemical plant, a fire easily occurs, and the common glass fiber reinforced plastic heat preservation pipes have no flame retardant property, so that when a fire occurs, the glass fiber reinforced plastic can aggravate the spread of the fire and generate a large amount of black smoke. In addition, the heat loss of the heat-insulating steel pipe is high, and is usually 5 to 10%.

How to design a conveying heat-insulating pipe with good heat-insulating effect, low heat loss and flame-retardant performance becomes a technical problem to be solved urgently in the field.

Disclosure of Invention

The invention aims to solve the defects of the prior art and provide the flame-retardant glass fiber reinforced plastic polyurethane heat-insulating pipe which has the advantages of good heat-insulating effect, low heat loss, difficulty in breaking or deformation and flame-retardant property.

The technical scheme adopted by the invention is as follows: a flame-retardant glass fiber reinforced plastic polyurethane thermal insulation pipe comprises a glass fiber reinforced plastic pipe body, wherein one end of the glass fiber reinforced plastic pipe body is provided with a plug connector, the other end of the glass fiber reinforced plastic pipe body is provided with a plug interface capable of being matched with the plug connector, and the glass fiber reinforced plastic pipe body is prepared from a flame-retardant high-temperature-resistant glass fiber reinforced plastic composite material; the inner surface of the glass steel tube body is coated with a high-temperature-resistant anti-corrosion material coating, and the peripheral wall of the glass steel tube body is sequentially coated with a polyurethane heat-insulating layer and a waterproof protective shell layer from inside to outside.

Preferably, the preparation method of the flame-retardant high-temperature-resistant glass fiber reinforced plastic composite material comprises the following steps:

step one, preparing a self-made flame-retardant resin;

weighing the raw materials according to the mass parts, putting 15-20 parts of novolac epoxy resin, 20-25 parts of self-made flame retardant resin, 15-20 parts of bisphenol A epoxy vinyl resin, 7-9 parts of dibutyl phthalate, 5-7 parts of ethylenediamine, 1-4 parts of ethanol and 10-12 parts of calcium carbonate into stirring equipment, and adding 60-70 parts of glass fiber after uniformly stirring;

pouring the mixture into a member mold, and pressurizing the mixture at the temperature of 200 and 250 ℃ to prepare the flame-retardant high-temperature-resistant glass fiber reinforced plastic composite material.

Preferably, the self-made flame retardant resin of the first step comprises a component A and a component B, wherein the component A comprises the following components in parts by weight:

the component B comprises peroxy cyclohexanone and a catalyst, wherein the peroxy cyclohexanone is 1-2 times of the addition amount of the unsaturated polyester resin, and the catalyst is 2-3% of the addition amount of the unsaturated polyester resin.

The preparation method of the self-made flame-retardant resin comprises the following steps:

1) introducing aluminum hydroxide into a stirring cylinder, spraying the coupling agent on the aluminum hydroxide while stirring uniformly,

2) then pouring the antimony trioxide, the decabromodiphenyl ether and the unsaturated polyester resin into a stirring cylinder, stirring for 30min along the same direction,

3) adjusting viscosity with organic phosphorus, stirring for 15-20min to enhance flame retardance, sampling to detect viscosity, and making into component A after viscosity meets the requirement,

4) and adding a component B consisting of cyclohexanone peroxide and a catalyst into the component A, and uniformly stirring to prepare the self-made flame-retardant resin.

Preferably, the unsaturated polyester resin is 191 type unsaturated polyester resin.

Preferably, the coupling agent is a solution prepared from titanate and styrene in a ratio of 1: 3.

The catalyst is cobalt naphthenate: styrene 1: 1.

Preferably, the waterproof protective shell layer is a high-density polyethylene protective shell layer or a glass fiber reinforced plastic protective shell layer.

Preferably, the polyurethane heat-insulating layer comprises a first woven layer, a polyurethane foam layer and a second woven layer which are sequentially arranged.

Preferably, the end surfaces of the polyurethane heat-insulating layer and the waterproof protective shell layer are provided with high-density polyethylene protective shell layers.

Preferably, the socket is provided with a guide part, and the guide part is an inner chamfer arranged at the end part of the socket.

Preferably, the outer end part of the plug connector is provided with an outer chamfer which is convenient to insert into the plug opening.

Preferably, the glass steel tube body, the plug connector and the plug interface are integrally formed.

Compared with the prior art, the invention has the following advantages:

1. according to the flame-retardant glass fiber reinforced plastic polyurethane heat-insulating pipe, the outer peripheral wall of the glass fiber reinforced plastic pipe body is provided with the polyurethane heat-insulating layer, and the heat conductivity coefficient of the polyurethane heat-insulating layer is as follows: lambda is 0.013-0.03kcal/m²H DEG C, the heat preservation effect is improved by 4-9 times compared with that of other common heat preservation materials. In addition, the inner surface of the glass steel tube body is coated with a high-temperature-resistant anti-corrosion material coating, so that the overall heat loss of the heat supply pipeline is further reduced, and the heat loss of a heat supply network of the tube body is 2% and is far less than the international standard requirement of 10%.

2. According to the flame-retardant glass fiber reinforced plastic polyurethane thermal insulation pipe, the glass fiber reinforced plastic pipe body is prepared from the flame-retardant high-temperature-resistant glass fiber reinforced plastic composite material, the flame-retardant high-temperature-resistant glass fiber reinforced plastic composite material is prepared from the phenolic epoxy resin and the bisphenol A epoxy vinyl resin, and the phenolic epoxy resin and the bisphenol A epoxy vinyl resin have the high-temperature-resistant characteristic, so that the long-term use temperature of the glass fiber reinforced plastic composite material can reach 150 ℃. In addition, by adding the self-made flame-retardant resin, the glass fiber reinforced plastic composite material is not easy to burn and can be self-extinguished, and has excellent insulating property and heat resistance.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is an internal cross-sectional view of the present invention.

Fig. 3 is an enlarged schematic view of a portion a of fig. 2.

FIG. 4 is a schematic view of the assembly of two sections of flame retardant glass fiber reinforced plastic polyurethane insulating pipe.

The numbers in the figures indicate:

the anti-corrosion plastic pipe comprises a glass steel pipe body 1, a plug 11, an outer chamfer 111, a plug port 12, a guide part 121, a high-temperature-resistant anti-corrosion material coating 2, a polyurethane heat-insulating layer 3, a first woven layer 31, a polyurethane foam layer 32, a second woven layer 33, a waterproof protective shell layer 4 and an anti-leakage alarm line 5.

The specific implementation mode is as follows:

for the purpose of enhancing the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and embodiment examples. The invention can be implemented by:

referring to fig. 1-4, a flame-retardant glass fiber reinforced plastic polyurethane thermal insulation pipe comprises a glass fiber reinforced plastic pipe body 1, wherein one end of the glass fiber reinforced plastic pipe body 1 is provided with a plug 11, the other end of the glass fiber reinforced plastic pipe body is provided with a plug 12 which can be matched with the plug 11, and the glass fiber reinforced plastic pipe body 1, the plug 11 and the plug 12 are integrally formed. The inner surface of the glass steel tube body 1 is coated with a high-temperature-resistant anti-corrosion material coating 2, and the outer peripheral wall of the glass steel tube body 1 is sequentially coated with a polyurethane heat-insulating layer 3 and a waterproof protective shell layer 4 from inside to outside; the polyurethane heat-insulating layer 3 comprises a first woven layer, a polyurethane foam layer and a second woven layer which are sequentially arranged. The end surfaces of the polyurethane heat-insulating layer 3 and the waterproof protective shell layer 4 are provided with high-density polyethylene protective shell layers. The heat conductivity coefficient of the polyurethane heat-insulating layer 3 is as follows: lambda is 0.013-0.03kcal/m²h.C. heat-insulating effectThe heat preservation effect of the heat preservation material is improved by 4-9 times compared with that of other common heat preservation materials. Furthermore, the water absorption is very low, about 0.2kg/m². The reason why the water absorption rate is low is that the closed cell ratio of the polyurethane foam is as high as about 92%. The heat-insulating layer, the waterproof protective shell 4 with good outer waterproof performance and the inner surface of the glass steel tube body 1 are coated with the high-temperature-resistant anti-corrosion material coating 2, so that the situation that a traditional trench is laid with a 'wet wadded jacket' heat-supply pipeline is changed, the overall heat loss of the heat-supply pipeline is greatly reduced, and the heat loss of a heat network is 2% and is less than the international standard requirement of 10%.

The waterproof protective shell layer 4 is a high-density polyethylene protective shell layer or a glass fiber reinforced plastic protective shell layer. The high-density polyethylene protective shell layer and the glass fiber reinforced plastic protective shell layer have good waterproof performance and compressive property, so that the heat-insulating pipe is not easy to break or deform. The high-density polyethylene protective shell layer or the glass fiber reinforced plastic protective shell layer has good corrosion resistance, insulation and mechanical properties. Therefore, the insulating pipe is hardly corroded by the outside air and water. As long as the water quality in the pipeline is well treated, the service life can reach more than 50 years, and is 3-4 times longer than that of the traditional trench laying and overhead laying.

The socket 12 is provided with a guide portion 121, and the guide portion 121 is an inner chamfer arranged at an end portion of the socket 12. The outer end of the plug 11 is provided with an outer chamfer 111 which is convenient to insert into the socket 12. The design can facilitate the connection of two sections of flame-retardant glass fiber reinforced plastic polyurethane thermal insulation pipes.

And an anti-leakage alarm line 5 is arranged in the polyurethane heat-insulating layer. The leakage-preventing warning thread 5 penetrates the entire polyurethane foam layer 32. The anti-leakage alarm line 5 can be connected with a special detection instrument. Once leakage occurs at a certain position of the pipeline, the accurate position of water leakage and the leakage degree of the heat preservation pipeline can be displayed on a special detection instrument through the conduction of an alarm line, so that leakage detection personnel can be informed to rapidly process the leaking pipe section, and the safe operation of a heat supply pipe network is ensured.

The glass fiber reinforced plastic pipe body 1 is made of flame-retardant high-temperature-resistant glass fiber reinforced plastic composite materials. The preparation method of the flame-retardant high-temperature-resistant glass fiber reinforced plastic composite material comprises the following steps:

step one, preparing self-made flame-retardant resin:

1) introducing 50 parts of aluminum hydroxide into a stirring cylinder, then spraying 1 part of coupling agent on the aluminum hydroxide, uniformly stirring while spraying,

2) then 1.5 parts of antimony trioxide, 1.5 parts of chlorinated paraffin, 10 parts of decabromodiphenyl ether and 40 parts of 191 type unsaturated polyester resin are all poured into a stirring cylinder and stirred for 30min along the same direction,

3) adjusting viscosity with 1.5 parts of organic phosphorus, if more foams, dropping defoamer tributyl phosphate for defoaming, stirring for 15min to strengthen flame retardance, sampling and detecting viscosity, and obtaining component A after the viscosity reaches over 160s (coating-4 cups, 25 ℃),

4) adding 60 parts of cyclohexanone peroxide and 1.25 parts of catalyst into the component A, and uniformly stirring to prepare the self-made flame-retardant resin;

weighing the raw materials according to the mass parts, putting 18 parts of novolac epoxy resin, 23 parts of self-made flame retardant resin, 18 parts of bisphenol A epoxy vinyl resin, 8 parts of dibutyl phthalate, 6 parts of ethylenediamine, 3 parts of ethanol and 11 parts of calcium carbonate into a stirring device, uniformly stirring, and adding 65 parts of glass fiber;

and step three, pouring the mixture into a member mould, and pressurizing the mixture at the temperature of 230 ℃ to prepare the flame-retardant high-temperature-resistant glass fiber reinforced plastic composite material.

Finally, it should be noted that: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.