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Fuel cell cartridge

A fuel cell and fuel technology, applied in fuel cells, fuel cell additives, secondary batteries, etc., can solve the problems of impact resistance, such as strength reduction, whitening, and deterioration of appearance characteristics, to achieve excellent performance, prevent shrinkage, Effect of preventing fall of impact resistance

Active Publication Date: 2009-06-17
TOYO SEIKAN GRP HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the case of molding the small-sized fuel cell cartridge described in the above-mentioned prior publication with a polyester resin, the polyester resin is whitened when accommodating high-concentration methanol, the appearance characteristics are deteriorated, and the strength such as impact resistance is reduced at the same time. It is difficult to be practical
[0009] On the other hand, since polyester resin is excellent in transparency, and is also excellent in mechanical strength such as barrier and impact resistance through directional crystallization, it is desired to use it for fuel cell cartridges. In WO2006 / 054489 filed by the Japanese people, a fuel cell cartridge made of polyester resin was also proposed, but it was still not satisfactory in terms of whitening when high-concentration methanol was stored.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1、5、6

[0076] A preform was formed using the molding materials shown in Table 1, and the mouth portion was thermally crystallized, and the bottom portion was thermally crystallized if necessary. In addition, polyethylene terephthalate (PET) used in Examples 1, 2, 4 to 6 and Comparative Examples 1 and 2 is PET polymerized with a germanium-based catalyst.

[0077] This preform was subjected to one-stage blow molding (stretch ratio: 2.5 times in the longitudinal direction and 2.7 times in the circumferential direction, heat setting conditions: 160°C × 2 seconds), and a diameter (outer diameter of thread teeth) of 18.6 mm and an internal volume of 55 mL were formed. 1. A cylinder with a wall thickness of 0.3mm (the ratio of wall thickness to the wall thickness of the main body of the preform: 0.1) is used.

[0078] The evaluation results are shown in Table 1.

Embodiment 2～3

[0080] A preform was formed using the molding materials shown in Table 1, and the mouth portion was thermally crystallized, and the bottom portion was thermally crystallized if necessary. In addition, PET used in Example 3 is PET polymerized by a titanium-based catalyst.

[0081] This preform is used for secondary blow molding (stretch ratio in the primary blow molding: 2.8 times in the longitudinal direction and 3.3 times in the circumferential direction, heating conditions: 300°C x 10 seconds, processing in the secondary blow molding rate (the difference between the final shape of the container and the volume of the heat-shrinkable bottle) 10%), the formed caliber (outer diameter of the thread) is 18.6mm, the inner capacity is 55mL, and the wall thickness of the main body is 0.3mm (compared to the wall thickness of the main body of the preform). The wall thickness ratio: 0.1) the size of the cylinder.

[0082] The stretch ratio of the formed container based on the size of t...

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Abstract

Disclosed is a fuel cell cartridge for holding a fuel for fuel cells which is characterized by being made of a polyester resin. This fuel cell cartridge is also characterized in that the density change in the bottom portion and the mouth portion after one week storage at 60 DEG C with a fuel contained therein is not more than 0.01 g / cm<3>. Consequently, whitening of the container, especially whitening in the bottom portion and the mouth portion is effectively prevented even when a high concentration methanol is contained therein, and thus excellent appearance characteristics can be achieved. In addition, lowering of impact resistance is effectively suppressed in this fuel cell cartridge.

Description

technical field [0001] The present invention relates to a fuel cell cartridge (cartridge) for storing fuel cell fuel. More specifically, it relates to a cartridge capable of suppressing whitening when storing high-concentration methanol as fuel, and having excellent performance in appearance, impact resistance, and crushability. fuel cell cartridge. Background technique [0002] Direct Methanol Fuel Cell (DMFC), which can directly supply methanol as fuel to the anode (fuel electrode) without using a reformer for extracting hydrogen, and can generate an electrochemical reaction, is suitable for the miniaturization of equipment, so it is used as a portable device The fuel cells used are particularly noteworthy. [0003] In general, DMFCs are broadly classified into active and passive types according to the fuel supply method. The active type uses a pump to supply fuel to the fuel cell and circulates it, and it is easy to obtain large power. On the other hand, due to Since me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04B65D1/00B65D25/48
CPCF17C2260/011F17C2209/2127H01M8/1011F17C2270/0763H01M8/04208F17C2227/0135Y02E60/50H01M8/04216F17C2260/012F17C2201/058F17C2203/0617B65D47/06F17C2203/066F17C2201/032F17C2201/0104B65D1/00H01M8/04
Inventor 田中健二朗芋田大辅细贝卓坂口俊树甲斐正次郎川村公一
Owner TOYO SEIKAN GRP HLDG LTD
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