JPS6025317B2 - Method for manufacturing diving suit base made of elastic composite foam - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention manufactures a composite foam material that is highly elastic, flexible, and extensible and exhibits low volume loss even under heavy pressure such as seawater for use as a material for diving suits and the like. It is about the method.

Nowadays, there is an urgent need to excavate resources at the bottom of the ocean floor, etc., and accordingly, clothing for working under the sea, ie, diving suits, has been improved and developed.

There are two types of diving suits, one of which is a dry suit, which is used for long periods of time in a generally fixed location during construction of port facilities, bridges, foundations, and other construction work, as well as marine accident work. These clothes are equipped with a device that blows air in from the sea so that you can work, but when you work while diving deep underwater while wearing these clothes, the water pressure in the water presses down on your clothes, causing damage to your hair and hair. The disadvantage is that the chicks form, and they enter the human body, pressing down on the blood vessels in the limbs and causing various blood circulation disorders. The other type of clothing is a wet suit, which is made from a flexible sponge-like material, so it does not cause as much blood circulation problems as a dry suit, but it does not cause air bubbles in the material due to water pressure. As the body is compressed, the volume of the clothes themselves shrinks and the volume increases, which makes it difficult to float on the water surface in the light condition, and the air bubbles of the material of the clothes are compressed. The disadvantage was that it was difficult to maintain the temperature, and workers were exposed to low temperatures and were unable to work. The present invention was developed to eliminate the above drawbacks, and involves mixing, kneading, and dispersing a foamable polymer compound, ultrafine glass rigid hollow spheres, and various additive materials, and then foaming the mixture. We created a sponge-like foam material that coexists with air bubbles and the above-mentioned hollow spheres, and the volume changes little even when water pressure is applied.
The object of the present invention is to provide a method for manufacturing a diving suit base made of a relatively lightweight elastic composite foam that can maintain flexibility and extensibility.

More specifically, the present invention will be described in detail with reference to the drawings. Weight ratio 10
0% and 25 to 35% by weight of extremely fine glass rigid hollow spheres 1 with an outer diameter of about 10 microns are mixed, and appropriate amounts of blowing agents, anti-aging agents, cross-linking agents, etc. are added to this. By thoroughly kneading, the mixture is uniformly dispersed, mixed, and foamed to form a foamed body 3, so that the hollow spheres 1 coexist with the air bubbles 2 in the foamed body 3 and are uniformly diffused. The diameter of the rigid hollow sphere 1 is about 10 microns, which is about the same diameter as the air bubbles 2 in the foam 3.
This one-length hollow sphere has the disadvantage of being brittle against localized impact from the outside, but in the present invention, the ultrafine hollow sphere 1 with the above-mentioned amount of rigidity is produced by foaming the above-mentioned amount of a polymer compound. By uniformly protecting the foam 2 with high elasticity, the foam 2 with high elasticity can respond to localized external impacts, and the rigid hollow sphere 1 can withstand the overall static load. Since it is constructed to be able to cope with this, it has the flexibility and extensibility to withstand water pressure etc. deep in the sea, and can be used for work, as well as the ability to maintain temperature using air bubbles. Also, since the rigid hollow body 1 is hollow, its apparent specific gravity is extremely small, so if this product is used for diving suits, it will serve as an ideal material that eliminates the drawbacks of conventional clothing.

Next, embodiments of the present invention and standard embodiments of conventional wetsuits will be described.

A Conventional Example High molecular compound polychloroprene...10 weight Foaming agents P, P', oxybis, benzene, sulfonyl hydrazide...4 weight Softener process oil...3
Weight softener Factis...
2 weight anti-aging agent Fenyl B Naphthylamine...
・…0. Mother weight crosslinker zinc oxide
...6 weight magnesium oxide ・
・・・・・・2 weight ji・power tecol・Porat's ji・power rousotrile・guanidine salt. ...0.3 weight Filler, carbon black ...1 weight The above mixture was heated for 10 minutes at 14500°C for 10 minutes, 2 minutes at 160°C for 2nd time, and 4 hours at 90°C for 3rd time. It is foam-molded, and as a result of testing under water pressure of 5k9/yen, this material has an area survival rate of 53% and a volumetric survival rate of 39%.
It became.

The hardness was 20 degrees using an ASKA-C type hardness tester. B Example of the present invention 1 High molecular compound polychloroprene 10 weight-rigid hollow glass hollow spheres
...25 weight blowing agent P, P', oxybis, benzene, sulfonyl hydrazide...
・・・2 weight softener process oil
...3 Weight Anti-aging agent Phenyl 8 Naphthylamine ...0.8 Weight Softener Factis
・・・・・・2 weight crosslinking agent zinc oxide ・・・6 weight magnesium oxide ・・・2 weight Zinc oxide salt of ditechol porate diorthotriyl guanidine. ．．・
...0. Red weight filler carbon black ・・・・・・5 weights The above mixture was heated for 10 minutes at 145°C for the first time, and 16
It was foam-molded at 0qo between two powders and 3rd stage at 90q0 for 4 hours, and as a result of an experiment under water pressure of 5 kg / , this material had an area residual rate of 81% and a volume residual rate of 73%. became.

A flexible foam material with a hardness of 20 degrees was obtained using an ASKA-C type hardness tester. C Example 2 of the present invention High molecular compound polychloroprene...100
Weight Rigid Hollow Sphere Glass Hollow Sphere ・
...35 weight blowing agent P, P', oxybis, benzene, sulfonyl hydrazide...
・・・2 weight softener process oil
・・・・・・3 Weight softener Factis
・・・・・・2 weight anti-aging agent Fenyl 8
・Naphthylamine・・・・・・0. Tortoise weight cross-linking agent Zinc oxide...6 weight Magnesium oxide...2 weight Di-catechol borate di-orthotriyl guanidine salt. ．．・．． ．．・0. Box weight filler carbon black...5 weight The above mixture was heated for 10 minutes at 145q○ for the first stage, and 16 kg for the second stage.
000 was used for two powders, and the third stage was foam molded at 90℃ for 4 hours.The material was tested under water pressure of 5kg/carp, and as a result, the area retention rate was 94%, and the volume retention rate was 90%. It became.

A flexible foam material with a hardness of 25 degrees was obtained using an ASKA-C type hardness tester. D Example of the present invention 3 High molecular compound styrene-butadiene rubber...10 weight rigidity hollow sphere glass hollow sphere...
...35 weight blowing agent dinitroso bentamethylene tetraamine.・・・．・・2 weight Softener process oil ・・3 weight Structol 212 ・・・・2
Weight softener Factis...
・・2 weight flexibility agent paraffin plasticizer
...1 weight anti-aging agent phenyl 8.
Naphthylamine...0. base weight crosslinker sulfur
...1 weight Crosslinking accelerator merkabut benzo thiazole ...1 weight Zinc oxide ...6 weight Foaming aid organic acid ...2 weight Crack preventive agent Micro crystalline wax...
...2 weight The above mixture was foam-molded for 10 minutes at 1490 in the first stage, 20 minutes at 16000 in the second stage, and 4 hours at 90°C in the third stage, and then placed under water pressure of 5k9/m. As a result of experiments, this material had an area survival rate of 94% and a volume survival rate of 90%.

A flexible foamed material with a hardness of 25 degrees was obtained using an ASKA-C type hardness tester. E Example of the present invention 4 High molecular compound polychloroprene 10 weight rigidity hollow sphere glass hollow sphere ・
...35 weight blowing agent P, P', oxybis, benzene, sulfonyl hydrazide...
・・・2 weight softener Betrowax ・
...0.1 weight aromatic oil
・・・・・・3 weight flexibility imparting agent Structol 2
12...1 weight softener Factis... weight anti-aging agent phenyl 8 naphthylamine...2.
5 weight anti-crack agent micro crystalline wax
・・・・・・2 weight crosslinking agent
Di-orthotriyl guanidine salt. ．．・．．・・0
．． 2 weight Zinc oxide...6 weight Magnesium oxide...2 weight Filler carbon black...10 weight
It was foam-molded at 70qo for 20 minutes and at tertiary 100q0 for 7 hours, and as a result of experiments under water pressure of 5k9/ground, this material had an area survival rate of 94% and a volumetric survival rate of 90%.
It became.

A flexible foam material with a hardness of 25 degrees was obtained using an ASKA-C type hardness tester. F Example 5 of the present invention High molecular compound Chloropolyethylene...Weight of 7 Ethylene/hard-acid vinyl copolymer...Weight of 3 Rigidity Hollow sphere Glass hollow sphere...
...25 weight blowing agent P, P', oxybis, benzene, sulfonyl hydrazide...
・・・2 weight softener process oil ・
...5 Weight flexibility agent Structol 212
....1 weight anti-aging agent phenyl B. naphthylamine ...0.5 weight crack inhibitor 2
・5・di-turny butyl hydroquinone
...0.5 weight Crosslinking agent peroxide ...0.5 weight Filler carbon black ...1 weight The above mixture was foam-molded at 17000 for 25 minutes, and the weight was 5k9. /As a result of experiments under ground water pressure, this material had an area survival rate of 81% and a volumetric survival rate of 73%.

A flexible foamed material with a hardness of 30 degrees was obtained using an ASKA-C type hardness tester. As mentioned above, the volume residual rate of the conventional material under water pressure of 5k9/ground is only 39%, indicating that the bubbles within the material are almost completely compressed, and the temperature is not maintained by the bubbles. In contrast, the product according to the present invention has a volume retention rate of 73% or more under the same conditions, has no problem in maintaining temperature with the foam, and has a hardness of 20% compared to conventional materials.
In contrast, the material of the present invention has an angle of about 25 to 30 degrees, so even if a hollow sphere is inserted, the flexibility is not much different from that of conventional materials.

[Brief explanation of the drawing]

The drawing is a partially cutaway front view showing an embodiment of the present invention. 1... Rigid hollow sphere ~ 2... Foam, 3... Foam.

Claims (1)

[Claims] 1. With respect to 100% by weight of the foamable polymer compound,
Mix 25 to 35% by weight of extremely fine glass hollow spheres with an outer diameter of about 10 microns, add a foaming agent, softener, anti-aging agent, crosslinking agent, etc., and knead thoroughly. 1. A method for manufacturing a diving suit base made of an elastic composite foam, characterized in that it is uniformly dispersed, mixed, and foamed. 2. A method for manufacturing a diving suit base made of an elastic composite foam according to claim 1, characterized in that the polymer compound is polychloroprene. 3. A method for manufacturing a diving suit base made of an elastic composite foam according to claim 1, characterized in that the polymer compound is styrene-butadiene rubber. 4. A method for manufacturing a diving suit base made of an elastic composite foam according to claim 1, characterized in that the polymer compound is a compound of chloropolyethylene and ethylene/vinyl acetate copolymer.