JPH0359040A - Closed-cell molding - Google Patents

Abstract

PURPOSE:To obtain the title molding which can be formed into an article without bonding, jointing or sewing by adding a saturated hydrocarbon of a mol.wt. in a specified range to a natural or synthetic rubber and a synthetic resin. CONSTITUTION:A closed-cell molding obtained by optionally adding 5-80wt.% saturated hydrocarbon of a mol.wt. of 2000-20000 to a natural or synthetic rubber and a synthetic resin as the principal components and integrally foaming this material into any desired article. When this molding is used, it is very high in airtightness because it does not have any sewed part. Therefore, even when one wearing this molding works underwater for a long time, the body temperature can be prevented from lowering and there is no fear of peeling or break at the sewed or jointed part. Because it contains a saturated hydrocarbon, it can keep its flexibility for a long time and is very good in workability and easily wearable.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to closed cell molded articles.

[Conventional technology] When manufacturing products from this type of material in the past,
It was customary to manufacture them by gluing, joining, or sewing.

[Problems to be Solved by the Invention] The present invention was developed in view of the above matters, and attempts to manufacture a product without adhesion, bonding, or sewing.

In other words, with conventional methods, there was a risk of damage or peeling, and there was a lack of airtightness.
It has become necessary to have as few glued or sewn parts as possible.

[Means for Solving the Problems] The present invention solves the above points with the following configuration.

The main components are natural rubber or synthetic rubber and synthetic resin, and 5% or more of saturated hydrocarbons with a molecular weight of 2,000 to 20,000.
80% by weight is optionally added, and the material is integrally foam-molded into a desired product.

[Function] The present invention has the above configuration, and when it is used,
Since there are no sewn parts, it has extremely high airtightness, so even if you use it to work underwater for a long time, you can prevent your body temperature from dropping. There is no risk of peeling or damage from the bonded parts.

Furthermore, since saturated hydrocarbons are mixed.

Product flexibility is guaranteed over the long term.

[Example] First, the configuration of an embodiment of the present invention will be explained.

The main components are natural rubber or synthetic rubber and synthetic resin, and 5% or more of saturated hydrocarbons with a molecular weight of 2,000 to 20,000.
80% by weight is optionally added, and the material is integrally foam-molded into a desired product.

In this case, the foam needs to be a closed cell foam.

Further, as the saturated hydrocarbon, it is preferable to mix Obanol or Vistanex in an amount of about 20 to 60% by weight, and this has the effect of maintaining appropriate flexibility for a long period of time.

Next, some embodiments will be described regarding the materials of the embodiments of the present invention.

Example I Polychloroprene rubber 10 fc 1 part Zinc oxide 5 parts Magnesium oxide 3 parts by weight Celogen OT Vistanex carbon black Process oil Opanol Talc Crosslinking conditions Apparent specific gravity Hardness Example II Natural rubber Zinc oxide stearin Celogen OT Sulfur added Sulfur accelerator CM Carbon black obanol calcium carbonate 5 parts by weight 20 parts by weight 10 parts by weight 30 parts by weight 10 parts by weight 17 parts by weight 170°C x 3 minutes 0.4 5 100 parts by weight 5 parts by weight 5 parts by weight 5 parts by weight Parts by weight 2 parts by weight io Parts by weight 40 parts by weight 38 parts by weight Crosslinking conditions Apparent specific gravity Hardness Example ■■ Polyacrylonitrile rubber Vinyl chloride resin Zinc oxide opanol Sulfur vulcanization accelerator CM Silicon oxide Vulcanization conditions Apparent specific gravity Hardness Example ■ Chlorosulfonate Polyethylene Zinc Oxide Door 0 70 'CX2.5 minutes 0.3 1 50 parts by weight 50 parts by weight 3 parts by weight 80 parts by weight 2 parts by weight 2 parts by weight 13 parts by weight "Cx 3 minutes 0.35 100 parts by weight 3 parts by weight Magnesium oxide Celogen OT Hakuenka CC Vistanex process oil Crosslinking conditions 3 parts by weight 7 parts by weight 20 parts by weight 40 parts by weight 25 parts by weight 170°C x 3 minutes Apparent specific gravity 0.4 Hardness 6 Above In this example, the cellogen OT is P-P'oxybis benzene sulfonyl hydrazine, the accelerator CM is cyclohexyl benzothiazole sulfenamide, Vistanex is manufactured by Exxon Chemical Company in the United States, and Obanol is manufactured by West German Bacon. The polyisobutylene and polyacrylonitrile rubbers manufactured by DISH Co., Ltd. are N, B, R1 White Enca CC refers to extremely fine surface treated carbonate rubber, and the hardness was measured using a rubber hardness tester C type.

[Effects of the Invention] Since the present invention has the above-mentioned configuration, the issue of airtightness can be solved by integral molding, which increases the effectiveness of body temperature retention, making it easier to use the dry suit of the present invention. This allows them to work on the seabed for long periods of time.
By adding saturated hydrocarbons, it has extremely remarkable effects such as being able to maintain flexibility for a long period of time, being highly workable, and being easy to wear.

Claims (1)

[Claims] (1) The main components are natural rubber or synthetic rubber and synthetic resin, optionally adding 5% to 80% by weight of a saturated hydrocarbon with a molecular weight of 2,000 to 20,000, and integrally foaming the material into the desired product. A closed cell molded product characterized by: