JP2549412Y2 - Ship hull - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hull of a ship, and more particularly, to a hull of a hull such as a falto boat, a lifeboat, a liferaft and the like, and an airbag.

[0002]

2. Description of the Prior Art For example, as shown in FIGS.
Is basically constructed.

[0003] As such a hull of a ship, conventionally, FIG.
As shown in FIG. 3, there is a base cloth 3 provided with a chloroprene rubber layer 4, a hypalone, and vinyl chloride. On this back surface, a waterproof rubber layer 6 is provided. Such a skin 2 is waterproof,
It is water-resistant and is widely used as a material for the hulls or air sacs of the above-mentioned fault boats, life boats, life raft and the like. However, there is a drawback that the wear resistance is reduced. In other words, the above-mentioned fault boat or the like rubs the bottom of the ship with the river bottom during use, or may be hit or rubbed during transportation or storage, but in the case of the outer skin provided with the chloroprene rubber layer 4, The wear and the like may cause cracks, abrasion, and tears, so that the rubber layer and the vinyl chloride layer had to be thickened. As a result, the weight of the outer skin was increased.

It is an object of the present invention to solve the above-mentioned problems, and more particularly, to provide a hull of a ship having excellent wear resistance.

[0005]

Means for Solving the Problems In order to achieve the above object, the hull of the ship according to the present invention has a thickness of 10 to 80 g / m on the base cloth.
² , the molar ratio of methacrylic acid to zinc is 1/0 with respect to 100 parts by weight of the ethylenically unsaturated nitrile-conjugated diene-based highly saturated rubber having a conjugated diene unit content of 30% by weight or less via the adhesive layer of No. 2. A compound containing 10 to 100 parts by weight of zinc methacrylate of 0.5 to 1/3 is peroxide-vulcanized to provide a rubber layer having a thickness of 0.1 mm or more.

That is, by using a rubber layer having particularly excellent wear resistance as a rubber layer, a hull of a ship having excellent wear resistance can be obtained. The hull of the present invention is not only abrasion resistant, but also excellent in water resistance, weather resistance and oil resistance as compared with the conventional chloroprene rubber layer, Hypalon, and vinyl chloride layer. It becomes the hull of the ship.

[0007]

DETAILED DESCRIPTION OF THE INVENTION FIG. 1a is a sectional view of an embodiment of the present invention. As apparent from FIG. 1a, the hull of the ship according to the present invention is provided on one surface of a base cloth 3 such as cloth. The wear rubber layer 5 is provided. Optionally, a water-resistant rubber layer is provided as shown in FIG. 1b. The abrasion-resistant rubber layer 5 and the base cloth 3 are provided with an adhesive therebetween.

In the hull of the present invention, the base cloth 4 may be a base cloth made of natural fibers or synthetic fibers. It is even better if the wear resistance is good. For example,
A cloth made of synthetic fibers such as polyester and aramid can be used.

It is preferable that the base cloth is as tight as possible.
It is preferable that a yarn of 0 to 840 denier is driven at a rate of 60 yarns / m or more. If it is less than 210 denier, the abrasion resistance may not be sufficient. On the other hand, if it exceeds 1260 denier, the number of shots must be reduced and the eyes may become large.

The length of such a base cloth is preferably 10
m or more. If it is less than 10 m, it can be manufactured by press vulcanization, and the effect of the manufacturing method described later cannot be sufficiently exhibited in manufacturing.

An abrasion-resistant rubber layer 5 is provided on such a long base cloth 1. The adhesive used for bonding the wear-resistant rubber layer 5 may be basically any adhesive as long as it can bond the base cloth and the wear-resistant rubber layer. Typically, those obtained by adding an active isocyanate to an ethylenically unsaturated nitrile-conjugated diene-based highly saturated rubber can be used.

The solid content of the adhesive layer is 20 to 100 g /
m ² . Generally, the solid content of the adhesive layer is 3 to 40 g / m ^2.
Therefore, this solid content is remarkably large as compared with the prior art.

This is to increase the thickness of the adhesive layer to suppress oxygen entering through the base cloth. That is, a rubber obtained by adding zinc methacrylate to an ethylenically unsaturated nitrile-conjugated diene-based highly saturated rubber can be vulcanized only by peroxide vulcanization.

If the solid content of the adhesive is less than 20 g / m ² , oxygen may not be shielded sufficiently.
If it exceeds 0 g / m ² , it takes a long time for drying, and the drying may be insufficient.

The abrasion-resistant rubber layer has a molar ratio of methacrylic acid to zinc of 1 part by weight based on 100 parts by weight of an ethylenically unsaturated nitrile-conjugated diene-based highly saturated rubber having a conjugated diene unit content of 30% by weight or less. A compound containing 10 to 100 parts by weight of zinc methacrylate having a ratio of 0.5 to 1/3, which is peroxide-vulcanized with 0.2 to 10 parts by weight of an organic oxide. Such a rubber is known as JP-A-1-30640.

The highly unsaturated ethylenically unsaturated nitrile-conjugated diene rubber used in the present invention is acrylonitrile,
Copolymers of ethylenically unsaturated nitriles such as methacrylonitrile and conjugated dienes such as 1,3-butadiene, isoprene and 1,3-pentadiene, and / or monomers copolymerizable with the above two monomers Body, for example, vinyl aromatic compound, (meth) acrylic acid, alkyl (meth)
A multi-component copolymer with acrylate, alkoxyalkyl (meth) acrylate, cyanoalkyl (meth) acrylate, etc., specifically, acrylonitrile-butadiene copolymer rubber, acrylonitrile-isoprene copolymer rubber, acrylonitrile-butadiene-isoprene Copolymer rubber, acrylonitrile-butadiene-acrylate copolymer rubber, acrylonitrile-butadiene-acrylate-methacrylic acid copolymer rubber, and the like can be given.

The thickness of the rubber layer is 0.1 mm or more. If the thickness is less than 0.1 mm, there is a high possibility of causing a vulcanization disorder due to oxygen, and sufficient abrasion may not be obtained. In addition, 0.5mm from the surface such as soft texture
It should be: However, this does not apply when performance is prioritized.

In manufacturing the above-mentioned ship hull,
After forming an adhesive layer on a long base cloth, methacrylic acid and zinc were added to 100 parts by weight of an ethylenically unsaturated nitrile-conjugated diene-based highly saturated rubber having a conjugated diene unit content of 30% by weight or less. A mixture obtained by adding 10 to 100 parts by weight of zinc methacrylate having a molar ratio of 1 / 0.5 to 1/3 and 0.2 to 10 parts by weight of an organic oxide is 0.1 mm in thickness.
Laminate as described above.

As described above, such a rubber can only perform peroxide vulcanization, and therefore has a drawback that it does not vulcanize in the presence of oxygen. Therefore, vulcanization is performed in a closed system by applying pressure as in press vulcanization. However, such a method has a drawback that a long rubber cannot be produced.

In order to eliminate the above-mentioned drawbacks, the long laminate is put into a closed system, for example, a vulcanizing vessel, and 4 to 5 kg / c.
At a pressure of m ² , steam or inert gas is passed to expel oxygen and fill with steam or inert gas.
By vulcanizing in such a state, vulcanization can be performed well.

As the inert gas, basically any gas can be used as long as it does not supply oxygen. For example, helium gas, nitrogen gas, carbon dioxide gas and the like are used.

The oxygen retained in the eyes of the base cloth is blocked by the thick adhesive layer as described above, and the amount of oxygen retained is reduced by reducing the size of the base cloth. The amount of oxygen retained at the interface between the fabrics is small, and good vulcanization is possible. If the thickness of the rubber layer is not more than 0.1 mm, there is a high possibility of causing a vulcanization trouble.

The vulcanization temperature is preferably from 140 to 180 ° C. If the temperature is lower than 140 ° C., the rubber layer may not be sufficiently vulcanized, while if it exceeds 180 ° C., the rubber deteriorates.

Further, the vulcanization time is preferably 2 to 3.5 hours. If it is less than 2 hours, the vulcanization may not be sufficient, while if it exceeds 3.5 hours, the rubber deteriorates.

When vulcanizing the above-described long laminate, preferably, the unvulcanized rubber layer is covered with a release paper or a glass fiber cloth impregnated with a fluororesin, and is covered from above. Preferably, oxygen is blocked. On this occasion,
If a pattern such as embossing is formed on release paper or the like, there is an advantage that a pattern corresponding to the rubber surface can be easily formed. Further, since it is not press vulcanization as in the prior art, the rubber layer is not in a compressed state. For this reason, there is an advantage that the texture is improved.

As described above, when release paper or the like is laminated,
Since it can be rolled and vulcanized in a closed system, a long rubberized cloth can be manufactured even if the closed system such as a vulcanizing pot is not large.

In the hull of the present invention, a water-resistant rubber layer 6 may be provided on the surface opposite to the wear-resistant rubber layer. This rubber layer may be the same as or different from the abrasion-resistant rubber layer described above.

[0028]

【Example】

Is dissolved in methyl ethyl ketone to prepare a 15% solution.

First, the adhesive of the composition 2 was applied to a plain weave cloth into which 60 fibers / m of 210 denier nylon fibers were driven.
It is applied at a rate of 80 g / m ² . After drying, composition 1
Of the rubber layer was uniformly applied so as to have a thickness of 0.5 mm, and a crosslinkable starch powder was sprayed on the surface of the rubber layer. Then, after attaching a release paper, it is wound into a roll,
It was installed in a vulcanizing pot.

Water vapor was introduced into the vulcanizer at a pressure of 4 to 5 kg / cm ² , and the air was replaced with water vapor. Then, the lid of the vulcanizer was closed. The temperature of the steam was 162 ° C. In such a state, vulcanization was carried out for 2 to 3 hours, and then the release paper was peeled off to produce a hull.

The abrasion resistance, water resistance,
The oil resistance and weather resistance are shown in the following table together with the hull of the ship having the chloroprene rubber layer. Tensile test is JIS 6328
-1981 (rubber cloth) 5.3.5 strip method,
Tear test is JIS 6328-1981 (rubber cloth)
5.3.6 using the single tongue method. under
In the table, after immersion in water at 40 ° C. for 200 hours and
The value after 200 hours of irradiation with the sunshine weather meter is processed.
Assuming the value after processing, the remaining rate = (value after processing / value in normal state) ×
Shown at 100%. As is clear from the table below,
Nylon cloth with rubber layer on the surface should be easy to absorb water
From the result, the elongation (%) is 40% in contrast to 400% in normal state.
480% after immersion in water at 200 ° C for 200 hours (value after treatment)
(Increase of 120% = remaining rate of 120%). Similarly,
In the Shine weather meter test, the same as light irradiation
Sometimes under the condition of alternately cycling shower and drying
Therefore, the elongation may be large (residual rate 110
%). As the elongation increases, the rubber and cloth
It can be seen that the tear strength is also increased due to the shear force
(Residual rate: 120%).

[0032]

[0033]

[0034]

The peel strength was in the range of 1 to 7 kg / cm by changing the type of the base cloth.

[0036]

[Effects of the Invention] According to the hull of the present invention, a special rubber having excellent wear resistance, water resistance, oil resistance, and weather resistance is used as a waterproof rubber layer. The hull of the ship has good abrasion resistance and excellent water resistance, oil resistance and weather resistance.

[Brief description of the drawings]

FIG. 1a is a sectional view of the hull of the present invention.

FIG. 1b is a sectional view of the hull of the present invention.

FIG. 2 is a plan view of a skeleton of a fault boat.

FIG. 3 is a side view of the fault boat.

FIG. 4 is a cross-sectional view of a conventional ship hull.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Falt boat 2 Ship skin 3 Base cloth 4 Chloroprene rubber layer 5 Abrasion resistant rubber layer

Claims (1)

(57) [Scope of request for utility model registration] 1. 100 parts by weight of an ethylenically unsaturated nitrile-conjugated diene-based highly saturated rubber having a conjugated diene unit content of 30% by weight or less via an adhesive layer of 10 to 80 g / m ² on a base cloth. And the molar ratio of methacrylic acid to zinc is 1
Zinc methacrylate having a ratio of 0.5 to 1/3
Peroxide vulcanized compound containing parts by weight
A hull for ships, provided with a rubber layer of 1 mm or more.