JPS58149497A - Manufacture of heat-insulating feed and exhaust pipe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a nine-insulated air supply and exhaust pipe in which a heat insulating material is integrally connected to the main body of the pipe.

Conventionally, piping for supply and exhaust pipes and installation of insulation materials at construction sites for shrimp industry have been carried out separately, which has many drawbacks.

In the case of the conventional method, after piping, cut the heat insulation material with K11IFr heat material to an appropriate size and attach 4N1 to the pipe body by cutting it in half or split it in half. was necessary. Therefore, it is impossible to avoid a decrease in the insulation effect due to heat dissipation from the joints of the insulation material, and it is necessary to wrap the KIIIr thermal material several times in order to compensate for this decrease.As a result, the use of insulation material As the amount increases, the overall thickness of the air supply and exhaust pipe after KIFr heat treatment increases, resulting in a disadvantage that the area occupied by the air supply and exhaust pipe becomes larger. Furthermore, in the conventional construction method, piping work and insulation work are performed separately, which has the disadvantage of lowering work efficiency and increasing overall construction costs.

Therefore, the present invention has been made to solve the above-mentioned drawbacks.
This purpose is achieved by using an insulated air supply and exhaust pipe in which the main body of the air supply and exhaust pipe and a heat insulating material are integrated.The insulated air supply and exhaust pipe according to the present invention is an air supply and exhaust pipe. The main body and the fired glass fiber mat are integrally molded. Further, depending on the membership fee, a glass cloth or the like impregnated with a heat-resistant resin (eg, polyimide resin, etc.) may be interposed between the tube body and the fired glass fiber mat.

"Fired n friend glass fiber mat" and butterflies in the present invention,
87 made of long glass fibers! A mat formed by mechanically or chemically bonding a web is immersed in a thermosetting fat binder, followed by heat treatment and firing.

-F1 In order to achieve the objective, the present invention forms a web formed from long glass fibers into a matte by mechanical or chemical bonding, soaks it in a thermoset resin binder, Wrap the impregnated mat around the tube body, apply pressure to squeeze out the binder-impregnated liquid, and then heat the mat to bake the mat.
To provide a method for manufacturing a heat insulating air supply and exhaust pipe in which a glass III fiber mat and a glass III fiber mat are integrally combined.

The main body of the supply and exhaust pipe should have a thickness of about 13 to 1.2 cm, preferably α
A metal plate of 5 to α8■, such as a galvanized iron plate, a surface-treated steel plate, a pure aluminum plate, an aluminum alloy plate, a stainless steel plate, etc., is shaped into a cylinder KH, and the joints are made into a cylindrical shape and vibrated by folding or melting J [1]. It can be manufactured by Further, the material of the tube body is not limited to metal, but may also be plastic, particularly preferably glass fiber reinforced plastic. Plastic tubes can be manufactured by known methods. The web has a glass length of 11 with a diameter of about 5 to 10 microns! #1 is cut to a length of 15-50cm, and ζrtt is cut to a certain length, for example, 50-250Q/
The formed rutted fiber web itself has no bond between the fibers, so it cannot be used as a material and is easily deformed and destroyed by external force. Since the fiber web [mechanical binding (t
lle is attached to needle punch) or chemical bond (
For example, by using an adhesive), the fibers are bound together and formed into a mat. It is practical that the thickness of the mat is about 5 to 25 cm, preferably 5aI. Next, the mat is soaked in a size-sized F'LK thermosetting resin binder. As the thermosetting resin binder, phenolic resin, urine-formalin resin, melamine-formalin resin, etc. can be used. Also,
To increase the heat resistance temperature of the binder, it is effective to fill the thermosetting resin with an inorganic filler such as silica, titanium, calcium carbonate, and shirasu balloons.

Most preferably, a silica-phenolic binder is used in the present invention.

The number of mats impregnated with thermosetting fat binder wrapped around the tube body is determined by the thickness of one mat, but in reality KFi (thin pine) (jl size 5-5 wa) t
It is desirable that the story be interesting for 2 to 5 volumes. Next, in order to improve the bond between the wrapped LiK tube body and the glass fiber #11, we sprinkled a thermosetting resin binder solution on the matte surface and the surface of the tube body while wrapping the initial adhesion. It is effective to promote this. It is best to wrap the mat around the tubular body by gently pressing the impregnated mat against the tubular body and rotating the tubular body slowly. After winding the impregnated mat around the pipe body, the mat is made to a certain thickness K using binder impregnating solution tIR.The mat's aperture p is due to excessive immersion (fi#I) and the weight of the mat is approximately i.
−μ＠[Continue until K decreases.

Next, the mat, which is one foot thicker than the aperture K, is subjected to heat treatment. This heat treatment is performed for the purpose of drying and baking the wet mat. Usually, the wet mat is about 80°~28°
Dry at a temperature of 0°C to 7'j4 and further approximately 150 @ ~ 4
Baking is carried out at a temperature of 0.000C for about 10 to 50 minutes, preferably 15 to 20 minutes. The optimum firing temperature is 250-300°C.

In reality, drying and baking are performed together in the same heating device.

The heat-resistant supply and exhaust pipes according to the present invention can be manufactured in the same manner as above, but if desired, the surface of the fired glass fiber mat can be covered with a suitable surface finishing material for the purpose of reinforcement or surface decoration. As a good surface finishing material, for example, aluminum glass R-bar with glass thread can be used. It was. The surface may be finished by applying a refractory coating covered with glass cloth or the like.

According to the present invention, by firing the long glass fibers to form a so-called ceramic, an 'nth-order heat insulating effect can be immediately obtained, and the pressing strength against the tube body can be significantly increased.

Next, an example of manufacturing a heat insulating air supply and exhaust pipe according to the present invention will be described, but the present invention is not limited to this.

Long glass fibers with a diameter of 5 to 10 microns are cut into lengths of 25 cm, then defibrated and piled up to 100 kt/m to form a web.
) to create a mat with a thickness of 5 cm, and cut it into a width of 1Q50 x length of 710 cm. ). Next, this impregnated mat was wrapped twice around a round vibrator with a diameter of 105 mm made from a stainless steel plate while spraying the silica-phenol water bath, and the phenol liquid was squeezed out while applying a pressure of 400 kp to a diameter of 6 mm. The cloak is approximately 15cm long.
It is dried at 0°C and further baked at about 280°C for about 20 minutes.

The long glass fiber 77 with a thickness of 6 waa fired in this way has a thermal conductivity of [LO267+0.00011θ
(θ indicates the average temperature during use), and the thickness is 20~
Thermal conductivity of 50■ rock fiber insulation zone (L028
Immediately above +0.00015#.

The heat supply/exhaust pipe manufactured by the method of the present invention has an integral structure of the main body of the supply/exhaust pipe and the fired glass fiber mat as a heat insulating material, so it is possible to attach the heat insulating material during construction. By preventing heat radiation from the seam, pWh thermal effect'
ft, and avoid unnecessary use of insulation materials.In addition, piping and insulation construction can be done at the same time, improving work efficiency and reducing construction costs〇Patent Applicant Makoto Supplement II: April 18, 1981 Mr. Kazuo Wakasugi, Commissioner of the Japan Patent Office ■, Indication of the case, Application No. 16577 of 1982, Title of the invention: Method for manufacturing insulated air supply and exhaust pipes 3. Relationship with the case of the person making the amendment Patent applicant address: IL 4-21-14-601, Tabata, Kita-ku, Kyoto Name: Tadashige Masaki 4, agent 5, amendment order with [” (spontaneous) Showa year Month 11 (Shipping date: Akira)
) t, a correct o object @-Book O Detailed explanation of the invention @O@1
Contents of correction 1) After "means." in IE3 negative line 12, rti,
Of course, the long glass fibers of the present invention can be used alone or in combination with other mineral fibers (eg, rock wool or glass wool). ” will be added.

2) Correct r 1.2 m J in the 4th good aS line to [3 chants j.

5) Correct "25m1" in line a of the 5th member to "50gIm".

4) Correct the ``balloon, etc.'' of the fifth member to ``balloon, zirconia oxide, aluminum hydroxide, etc.''.

5) Correct "7th member 5th row Or40Q℃" to "800℃".

6) Correct "600℃" in the 7th member-1 line to "400℃".

that's all

Claims (1)

[Claims] A web formed from long glass fibers is formed into a mat by chemical bonding, this mat is impregnated with a thermosetting IIM fat binder, this impregnated mat is wrapped around a tube body, and pressure is applied. After squeezing the binder-impregnated liquid, the tube body and the fired glass*fibers are integrated into a W# heat, which is based on heating treatment and firing of the matte. Method of manufacturing supply and exhaust pipes.