JPH0193347A - Vibration-attenuating composite metallic sheet - Google Patents

Abstract

PURPOSE:To simplify composing work and obtain excellent adhesive property as well as vibration attenuating property by a method wherein butene-1/ propene/ethene-terpolymer resin is bonded between two sheets of metallic sheets as an intermediate layer. CONSTITUTION:Adhesive property between butene-1/propene/ethene-terpolymer resin and a metallic sheet can be improved by modifying the resin by adding acid, anhydride of acid or peroxide of these substances in accordance with necessity. The butene-1/propene/ethene-terpolymer resin can be formed into a film or a sheet by employing a T-die film manufacturing device or an inflation film manufacturing device. A vibration-attenuating composite metallic sheet 14 is manufactured by a method wherein the film or the sheet 7 of the butene-1/ propene/ethene-terpolymer resin is interposed between the same kind or different kinds of the metallic sheets 1, 1' and they are preferably heated and compressed by employing a compression molding machine or rolls.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is directed to the production of butene-1, which has a high softening point in the form of a film or sheet, between two metal plates.
The present invention relates to a vibration-damping composite metal plate having a propene/ethene polymer resin interposed therebetween.

(Conventional technique*) In recent years, with the tightening of noise regulations for houses, automobiles, etc., various methods are being considered as countermeasures, but the main method is to use damping materials for sound sources or parts that produce sound due to the vibrations of these sound sources. There is a growing tendency to do this, and various vibration-damping composite metal plates have been proposed so far.

For example, Japanese Patent Publication No. 39-12451 discloses a vibration-damping metal plate with an intermediate layer made of a copolymer of vinyl acetate and maleic diester, vinyl chloride and ethylhexyl acrylate, etc., but this is made of a viscoelastic resin. This method takes advantage of the well-known fact that vibrational energy is absorbed as thermal energy. It is expected that the viscoelasticity of this viscoelastic resin changes sensitively with changes in temperature.

In general, vibration absorbing performance can be expressed by a physical quantity called a loss coefficient, and it is said that if the value is 0.05 or more, it is effective as a vibration absorbing material.

Viscoelastic substances such as rubber, copolymer resin, and asphalt are considered effective as such materials. However, even though these have sufficient vibration damping ability, they have poor adhesion to the metal plate and poor workability for sandwiching them between two metal plates, so to date they have not been completely satisfactory. No material found.

Therefore, the inventor of the present invention has conducted extensive studies to improve the various drawbacks of the viscoelastic materials described above, and as a result, has arrived at the present invention.

(Means for Solving the Problems) That is, the present invention provides a vibration-damping composite metal comprising a butene-11 propene/ethene terpolymer resin bonded between two metal plates as an intermediate layer. Regarding the board.

The butene-11 propene l-ethene terpolymer resin used in the present invention is a highly inferior butene-1/propene l-ethene terpolymer resin with a high softening point, comprising butene-1, propene, It is obtained by direct copolymerization of three types of etheno monomers by ordinary low-pressure polyolefin polymerization, and has a softening temperature of 500C to 2000C1 according to DIN 52010, preferably 750C to 180C.
It is necessary that the temperature be within the range of 0C.

Butene, which is the intermediate layer of the vibration-damping composite metal plate of the present invention.
In order to improve the softening temperature, moldability, etc. of the 17 propene l ethene turbo polymer resin, a plasticizer,
Inorganic fillers and the like can be added. Further, stabilizers, antistatic agents, etc., which are general additives added to polymer resin materials, can be appropriately added in the case of the present invention as well as in conventional materials.

Furthermore, the butene-1/propene-1 ethene terpolymer resin used in the present invention can be modified by adding an acid or an acid anhydride, or a peroxide together with the metal sheet, as necessary. It is possible to further improve the adhesion with. Suitable acids or acid anhydrides include saturated or unsaturated monocarboxylic acids, dicarboxylic acids, tricarboxylic acids, and polycarboxylic acids, or acid anhydrides thereof;
For example, propionic acid, pivalic acid, capric acid, lauric acid, fumaric acid, oleic acid, acrylic acid, methacrylic acid, maleic acid, isophthalic acid, terephthalic acid, trimellitic acid, pyromellitic acid, maleic anhydride, terephthalic anhydride. and trimellitic anhydride. In addition, oxycarboxylic acids and their acid anhydrides such as malic acid and citric acid can also be used. After being formed into a film or sheet using a blown film manufacturing device, it is sandwiched between two metal plates and bonded by heat and pressure. The film or sheet used in this case is 1011
Thicknesses of m to 1 mm, especially 20 to 150 μm are preferred.

The metal plates used in the present invention include metal plates made of iron, nickel, titanium, aluminum, magnesium, copper, zinc, tin, etc., and various alloy plates based on the above-mentioned metal plates, such as stainless steel plates. Can be mentioned. The thickness of these metal plates is not particularly limited as long as the obtained vibration-damping composite metal plate can be subjected to secondary processing such as bending and squeezing, but - 0.01 to 5 mm for boat fishing. It is sufficient that the thickness is . These metal plates are commercially available, but since they generally have oils and fats attached to them, it is preferable to use ones that have been degreased, and any conventionally known method may be used for the degreasing.

The method for manufacturing the vibration-damping composite metal plate in the present invention involves interposing a film or sheet of butene-1/propene-1 ethene terpolymer resin between metal plates of the same or different types, and using a compression molding machine or a roll. It is preferable that the material be heated and compressed.

At the end, the metal plate, butene-11propene l-ethene terpolymer resin, and the appropriate size convenient for the next secondary processing,
Various methods can be employed, such as a method in which the material is cut into 97 shapes and then bonded, and a continuous manufacturing method shown in FIG. 1. In addition,
When manufacturing by the continuous manufacturing method shown in FIG. 1, it is preferable to degrease the metal plate in advance in a step as shown in FIG. 2, since good adhesion can be obtained.

In addition, as an embodiment of the present invention, butene-11propene l
Needless to say, the invention also includes a lightweight composite metal plate having a multilayer structure in which two or more metal plates are bonded together using an ethene terpolymer resin as an intermediate layer.

(Effects of the Invention) The vibration-damping composite metal plate provided by the present invention not only exhibits good vibration-damping properties, but also has butene-1 in the intermediate layer.
Since the 1-propene-1-ethene ether polymer resin can be easily formed into a film or sheet, composite processing is very simple, and moreover, it exhibits good adhesion.

(Example) Examples are shown below to explain the present invention in detail.

Examples 1 to 5 As two metal plates, 1. A general cold-rolled steel plate with a size of 150 mm x 300 mm was used, and the butene-1/propene/temper polymer interstitial oil shown in Table 1 was used.

A significantly inferior butene with a high softening point as shown in Table 1.
1/Propene l-ethene terpolymer resin (Hfils)
A film with a thickness of 8,011 m was produced using a regular T-die extruder using a VESTOPLAST (manufactured by Kogyo Corporation), and was sandwiched between the two steel plates mentioned above to produce a film of 2,000C15 kg/am2.
They were thermally bonded for 5 minutes to create a composite metal plate. Using these composite metal plates, a T-peel test was conducted to determine adhesive strength, and an Erichsen test was conducted to determine processing suitability. Table 1 shows the results.
Shown below.

In addition, in order to examine the vibration damping performance of the composite steel plate, the loss coefficient was measured using the mechanical impedance method. The results are shown in Figure 3.

Comparative Example 1 Using a commercially available vibration-damping composite metal plate, that is, a composite metal plate with a thickness of 10,011 m bonded with vinyl acetate adhesive, adhesive strength, workability, and vibration damping were evaluated in exactly the same manner as in Examples 1 to 5. Performance was measured. The results are shown in Table 1 and FIG. 3, and it can be seen that they are inferior in all respects compared to Examples 1 to 5.

Comparative Example 2 Table 1 shows the results of measuring vibration damping performance using a general cold rolled steel plate. It can be seen that the damping performance is clearly inferior to the composite metal plates prepared in Examples 1 to 5.

[Brief explanation of the drawing]

Figure 1 shows a continuous manufacturing method for a vibration-damping composite metal plate, Figure 2 shows a continuous degreasing process for a metal plate, and Figure 3 shows Examples 1 to 5.
This is a result showing the temperature dependence of the loss coefficient of the material used in Comparative Example 1.2. In FIG. 1, 1, 1' are metal plates, 2.2', 3.
3' is a roll, 4, 4', 8 is a leveler, 5, 5' is a preheating process, 6, 6' is a roll, 9 is a reheating process, 10 is a first cooling process, Step 1 is a second cooling process, 12.13 is a slitter, 7 is a highly inferior butene with a high softening point.
11 Propene l ethene terpolymer resin film, 1
4 is a product, a vibration-damping composite metal plate. Also, Figure 2
, 15 is a roll, 16, 18 is an electrolyte tank, 17
19 is a positive electrode plate, 19 is a negative electrode plate, 20 is a power source, 21 is a washing process, 22 is a drying process, 23 is a metal plate before degreasing, and 24 is a metal plate after degreasing. Patent Applicant Daicel Seyurus Co., Ltd. Procedural Amendment (Voluntary) 1. Display of the case 1988 Patent Application No. 44424 2, Title of invention: Vibration damping composite metal plate 3, Person making the amendment 4, Subject of the amendment 5, Contents of the amendment are used. (2) Add the following sentence between lines 8 and 9 on page 8 of the specification. The loss coefficient (maximum value) shown was 0.1. (3) Table 1 on page 9 of the specification is corrected as follows. (4) Correct Figure 3 of the drawing as shown in the attached sheet. September 3, 1986 Patent Office Officer Fumiyoshi Yoshida 1.
Display of the case Patent Application No. 44424 of 1988 2, Name of the invention Vibration-damping composite metal plate 3, Person making the amendment Relationship to the case Patent applicant Postal code 100 Address 3-8-1 Kasumigaseki, Chiyoda-ku, Tokyo Mr. No.
Name: Daicel-Hüls Co., Ltd. September 6, 1986
Day 5, Subject of amendment Procedural amendment (voluntary) May 24, 1988

Claims (1)

[Claims] A vibration-damping composite metal plate comprising a butene-1/propene/ethene terpolymer resin bonded between two metal plates as an intermediate layer.