JPS60183107A - Manufacture of light-weight material - Google Patents

Abstract

The invention relates to a process for producing a lightweight material, in particular for use as matching layer material in ultrasonic transducers. The lightweight material consists of a lightweight filling material, preferably hollow glass micro beads (microballoons), which is bound by means of resins, preferably epoxy or polyester resins. To this end the filling material is introduced into a centrifuge and covered by the low viscosity resin. It is especially advantageous to apply to the glass beads a filter material which is pressed by a weight onto the glass beads and through which the low viscosity resin can be filtered, so that no contaminants in the resin can penetrate between the glass beads.

Description

[Detailed description of the invention] 11 yen: Shō”, Group No. 1j 1 Ilf 1 Present invention 5J,
IQ1 fat 7j J: A careless filling H book 1 made of 1ifnfi, 1 piece left V (4 pieces).

[Conventional technique l de j1 ・Sometimes, for example, altitude requirements in the ultraviolet range are imposed t+, le ill vch) (, -( is high intensity, about 0.5 to 9 / (: m3 low density, homogeneous structure, good watertightness, good heat resistance and high solvent resistance
A diameter of 1"l having a certain property is required. The low apparent density of the hollow sphere allows for mixing with body fat in a stirrer only under certain conditions.

IF) I'I' Vacuum L7.

``The problem that invention is trying to solve'' The purpose of the present invention is to solve the problems mentioned below.

[Means for solving the problem 1 According to the present invention, this purpose is to satisfy j+Q il'A'
F) is introduced into the centrifuge 1'i i/ζ and covered with the free-flowing resin trcx, and then both elements are centrifuged until mixing and possibly hardening. This is achieved by The essential characteristic of this is that after the introduction of the filling material and the weight, the filter material and the weight are successively placed on top of the light filling material, and that the fluidity of the material is If the finger j is placed in front of the centrifugal part t and has a li hole (the weight still serves the fat), it will be more closely configured to f. In this case, it is advantageous if micro-hollow spheres or, in particular, glass hollow spheres are used as the filling material. The point of liquidity!
It is particularly desirable to use epoxy resin or polyester resin as the resin.

In order to solve the above problems, in another method, the micro hollow glass spheres are pulverized, removed from the box, filled into a mold, and lightly sprinkled. It is also preferably cured by Vishaohe, and immediately thereafter (filled with a flowable anti-Lb resin, this reaction tree is i:i'Y) and cured. In this case as well, epoxide or polyester resin is used as the reaction curing resin.
It is possible that 1f will occur.The porous pottery, which has not been completely filled, has been in this place for about 092 years (1,37
・' (Publishes a density of 7ff3. Filling with reaction resin of lζ to increase watertightness and strength (〆I: can be carried out without any auxiliary means by R, empty V, or centrifugal external ((F) In most cases, it is sufficient to pour the fluid resin onto the sintered body.Curing is carried out at an elevated temperature of chamber width or higher. The density is preferably about 0.05 to 0.67/nn
:(.fI! The compared material can be ejected from the mold before filling. However, it can also be filled in the mold. In either case, +
) y, mold's; historic use, ma, mold without mold release agent
It is 4'11 in that it is jJ ability. Manufacture of light paulownia wood
- At the same time, it can also be carried out by adhesion on a joint part such as piezoceramics. If the light material is to be produced as having a color, the flowable impregnated resin can be colored.

The drawing shows a container 1 which is supported in a centrifuge, for example around a single line 2, with a rotation '=J function. The container 2; 1 is constructed as a hollow cylinder with a bottom 3. The container is first filled with micro glass hollow spheres 4 which are then coated with a filter material 5 consisting of, for example, sintered ferrogellast powder.

A weight 6 is placed on top of this filter bowl 1.

This string does not fill the entire cross section of the container 1, and in some cases additionally has a shell dll/I'L7,
These through holes are then filled with fluid resin 8.
passes through. Now, when the container 1 is rotated, the centrifugal force will push the filter 1 all 5 further onto the glass bulb, and the resin will pass through the filter stopper and out of the glass hollow bulb! Fill in the blank in d1. II! J! This can be carried out during the curing of the material or after appropriate shrinkage. The material thus hardened is advantageously used as a matching layer in ultra-a-wave transducers.

[Brief explanation of the drawing]

The drawings are diagrams for explaining the method according to the invention. DESCRIPTION OF SYMBOLS 1... Container, 2... Axis line, 6-Bottom, 4... Glass hollow sphere, 5... Filter stopper, 6... Weight, 7 - W curved hole.

Claims (1)

[Claims] 1) An article 1 consisting of a light filler material bonded to a resin.
In the manufacturing method of ``2'', the filler material (4) is introduced into the far/deep separation 1-9 (1), and is covered with the fluid resin (8), and after that the double-determined element is i#￥＠' characterized by being subjected to centrifugation until it reaches konju, and in some cases until it reaches v′1fii141hi.
How to imitate Ikushina. 2] Mitsunawa I'A class (4th class, after 4 people, filter 1 o charge (5) and k mori (6) were successively placed in the 9th class class (4)'s second l1ii!, and A fluid resin (8) is placed on the weight (6) before centrifugation, and the weight (6) has a ratio of 11LL (7) to the resin (8). Claim 1 (method in the d region. 4) The method according to claim 1, wherein the micro hollow spheres are glass hollow spheres. 5) The method according to claim 1, wherein epoxide or polyester resin is used as the resin. The method according to any one of Range 41 to 4. 6) Light M consisting of a lightweight filling in the form of micro hollow glass spheres bonded by a resin, preferably an epoxide or polyester resin + family A. 1Δl'), in which micro-hollow glass spheres are mixed with pulverized reaction-curing resin, filled into a mold, lightly heated, cracked, and preferably ultrasonicated ( (Claim RXC 4 J/J War Description Method, characterized in that it is further cured and immediately thereafter grooved with a fluid reactive resin, and this reactive resin is subsequently cured. 7) Cured. 8) A method according to claim 6, characterized in that the paulownia wood is removed from the mold before filling. The method described in Section 6 or Section yimll.