High impetus, high burn rate gas generant propellant and seatbelt pretensioner incorporating same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C06B-045/08
F42B-004/10
출원번호
US-0389330
(2003-03-13)
발명자
/ 주소
Baglini, James L.
Helmy, Abdel K.
Stang, Peter L.
Dunkerson, Dennis E.
Wright, James H.
출원인 / 주소
Special Devices, Inc.
대리인 / 주소
Law Offices of Thomas J. Brindisi
인용정보
피인용 횟수 :
0인용 특허 :
8
초록▼
Gas generating compositions having a fuel preferably comprising a mixture of 5-aminotetrazole (5-AT), azodicarbonamide (ADCA), an oxidizer, and a superfine metal powder burn rate enhancer such as nano-aluminum, for use in automotive seatbelt pretensioners and other suitable applications requiring hi
Gas generating compositions having a fuel preferably comprising a mixture of 5-aminotetrazole (5-AT), azodicarbonamide (ADCA), an oxidizer, and a superfine metal powder burn rate enhancer such as nano-aluminum, for use in automotive seatbelt pretensioners and other suitable applications requiring high impetus, high rate of gas generation. Also, methods of making these compositions, and devices incorporating them such as seatbelt pretensioners.
대표청구항▼
1. A gas generating composition having:a. a fuel that is a ternary solid solution and essentially comprises 5-AT, a blowing agent comprising ADCA, and a superfine metal powder burn rate enhancer;b. an oxidizing agent; and,c. a binder.2. The composition of claim 1, further comprising an additional pr
1. A gas generating composition having:a. a fuel that is a ternary solid solution and essentially comprises 5-AT, a blowing agent comprising ADCA, and a superfine metal powder burn rate enhancer;b. an oxidizing agent; and,c. a binder.2. The composition of claim 1, further comprising an additional processing aid additive.3. The composition of claim 1, wherein said superfine metal powder has a sub-micron particle size.4. The composition of claim 3, wherein said superfine metal powder comprises aluminum.5. The composition of claim 3, wherein said fuel comprises from 10 to 80 wt. % of said composition, said oxidizing agent comprises from 20 to 80 wt. % of said composition, and said binder comprises from 1 to 10 wt. % of said composition, and wherein said fuel is comprised of from 1 to 90 wt. % 5-AT, 5 to 95 wt. % ADCA, and 0.01 to 10 wt % superfine metal powder.6. The composition of claim 5, wherein said superfine metal powder comprises aluminum and comprises from 1 to 5 wt. % of said fuel.7. The composition of claim 6, wherein said oxidizing agent essentially comprises one or more chemicals selected from the group consisting of KClO4, NH4ClO4, and NaNO3.8. A seatbelt pretensioner including a gas generant composition that includes:a. a fuel that is a ternary solid solution and essentially includes 5-AT, a blowing agent comprising ADCA, and a superfine metal powder burn rate enhancer;b. an oxidizing agent; and,c. a binder.9. The pretensioner of claim 8, wherein said superfine metal powder comprises aluminum.10. The pretensioner of claim 9, wherein said fuel comprises from 10 to 80 wt. % of said composition, said oxidizing agent comprises from 20 to 80 wt. % of said composition, and said binder comprises from 1 to 10 wt. % of said composition, and wherein said fuel is comprised of from 1 to 90 wt. % 5-AT, 5 to 95 wt. % ADCA, and 1 to 5 wt. % aluminum having a sub-micron particle size.11. The pretensioner of claim 10, wherein said oxidizing agent essentially comprises KClO4 and said pretensioner includes an igniter that is crimped.12. The pretensioner of claim 10, wherein said oxidizing agent essentially comprises a mixture of NH4ClO4 and NaNO3 and said pretensioner includes an igniter that is hermetically sealed.13. A method of making a gas generating composition comprising the following steps:a. providing a fuel that is a ternary solid solution and essentially comprises 5-AT, a blowing agent comprising ADCA, and a superfine metal powder burn rate enhancer;b. providing an oxidizing agent;c. providing a binder; and,d. mixing said fuel, oxidizing agent, and binder to form said gas generating composition.14. The method of claim 13, wherein said binder is pre-cured.15. The method of claim 13, wherein step c) is performed prior to step b).16. The method of claim 13, wherein said binder is Nipol?, said oxidizing agent is KClO4, and said composition is for use as a propellant in a seatbelt pretensioner having a non-hermetically sealed igniter.17. The method of claim 13, wherein said method includes the step of applying a vacuum to said ternary solid solution, oxidizing agent, and binder until spherical grains substantially ranging from 0.2 to 2 mm in diameter are formed.18. The method of claim 17, wherein said ternary solid solution comprises from 10 to 80 wt. % of the resulting composition, said oxidizing agent comprises from 20 to 80 wt. % of the resulting composition, and said binder comprises from 1 to 10 wt. % of the resulting composition, wherein said ternary solid solution is comprised of from 1 to 90 wt. % 5-AT, 5 to 95 wt. % ADCA, and 1 to 5 wt. % aluminum having a sub-micron particle size, wherein said oxidizing agent essentially comprises one or more chemicals selected from the group consisting of KClO4, NH4ClO4, and NaNO3, and wherein said binder is hydrocarbon-based.19. The method of claim 13, further comprising the step of preparing said ternary solid solution in a slurry.
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이 특허에 인용된 특허 (8)
Yoshida Tadao,JPX, Azodicarbonamide containing gas generating composition.
Canterberry J B ; Schlueter Samuel Steven ; Adams John Herman ; Walsh Robert Keith, Gas generating compositions containing phase stabilized ammonium nitrate.
Hamilton Brian K. (Littleton CO) Haynes Kenneth E. (Parker CO) Kirk Doug R. (Parker CO) Blomberg William J. (Parker CO), Slurry-loadable electrical initiator.
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