Impact-absorbing member

Patent metadata

Field	Value
Publication number	US-9452596-B2
Application number	US-201314419116-A
Country	US
Kind code	B2
Filing date	Sep 2, 2013
Priority date	Sep 6, 2012
Publication date	Sep 27, 2016
Grant date	Sep 27, 2016

Abstract

An impact-absorbing member, wherein a formed body (D 1 ) made of a fiber-reinforced resin composition includes a polyamide resin, a rubbery polymer having a reactive functional group and a fibrous inorganic filling material is superposed on another formed body (D 2 ) made of a non-reinforced resin composition comprising a polyamide resin and a rubbery polymer having a reactive functional group, wherein the formed body (D 1 ) is disposed at an impact-receiving side.

First claim

The invention claimed is:

1. An impact-absorbing member of an automotive interior or exterior, wherein a formed body (D 1 ) made of a fiber-reinforced resin composition comprising a polyamide resin, a rubbery polymer having a reactive functional group and a fibrous inorganic filling material is superposed on another formed body (D 2 ) made of a non-reinforced resin composition comprising a polyamide resin and a rubbery polymer having a reactive functional group, wherein the formed body (D 1 ) has an impact-receiving side and is adapted to absorb an impact on the impact-receiving side and the formed body (D 2 ) is adapted to absorb a residual impact through the formed body (D 1 ).

2. The impact-absorbing member according to claim 1 , wherein a minimum thickness (d 1 ) of the formed body (D 1 ) is 1.0 to 10.0=1 while a minimum thickness (d 2 ) of the formed body (D 2 ) is 0.5 to 5.0 mm.

3. The impact-absorbing member according to claim 1 , wherein a minimum thickness (d 1 ) of the formed body (D 1 ) and a minimum thickness (d 2 ) of the formed body (D 2 ) satisfy (I) and (II):
2.3 mm≦( d 1)+( d 2)≦12.0 mm  (I)

0.4≦( d 1)/( d 2)≦10.0.  (II)

4. The impact-absorbing member of claim 1 , wherein the reactive functional group of the rubbery polymer is at least one of a reactive functional group selected from the group consisting of epoxy group, acid anhydride group, amino group, carboxyl group, carboxyl metal salt and oxazoline group.

5. The impact-absorbing member of claim 1 , wherein the formed body (D 1 ) and the formed body (D 2 ) have a continuous phase (A) of the polyamide resin and a dispersed phase (B) of the rubbery polymer having the reactive functional group with a morphology of 10% or more of an area covered with microparticles having a particle diameter of 1 to 100 nm and are generated by a reaction between the polyamide resin and the rubbery polymer having the reactive functional group, wherein the continuous phase (A) and the dispersed phase (B) are observed with an electron microscope.

6. The impact-absorbing member of claim 1 , wherein the member receives an impact force in a protective container.

7. The impact-absorbing member according to claim 2 , wherein a minimum thickness (d 1 ) of the formed body (D 1 ) and a minimum thickness (d 2 ) of the formed body (D 2 ) satisfy (I) and (II):
2.3 mm≦( d 1)+( d 2)≦12.0 mm  (I)

0.4≦( d 1)/( d 2)≦10.0.  (II)

8. The impact-absorbing member of claim 2 , wherein the reactive functional group of the rubbery polymer is at least one of a reactive functional group selected from the group consisting of epoxy group, acid anhydride group, amino group, carboxyl group, carboxyl metal salt and oxazoline group.

9. The impact-absorbing member of claim 3 , wherein the reactive functional group of the rubbery polymer is at least one of a reactive functional group selected from the group consisting of epoxy group, acid anhydride group, amino group, carboxyl group, carboxyl metal salt and oxazoline group.

10. The impact-absorbing member of claim 2 , wherein the formed body (D 1 ) and the formed body (D 2 ) have a continuous phase (A) of the polyamide resin and a dispersed phase (B) of the rubbery polymer having the reactive functional group with a morphology of 10% or more of an area covered with microparticles having a particle diameter of 1 to 100 nm and are generated by a reaction between the polyamide resin and the rubbery polymer having the reactive functional group, wherein the continuous phase (A) and the dispersed phase (B) are observed with an electron microscope.

11. The impact-absorbing member of claim 3 , wherein the formed body (D 1 ) and the formed body (D 2 ) have a continuous phase (A) of the polyamide resin and a dispersed phase (B) of the rubbery polymer having the reactive functional group with a morphology of 10% or more of an area covered with microparticles having a particle diameter of 1 to 100 nm and are generated by a reaction between the polyamide resin and the rubbery polymer having the reactive functional group, wherein the continuous phase (A) and the dispersed phase (B) are observed with an electron microscope.

12. The impact-absorbing member of claim 4 , wherein the formed body (D 1 ) and the formed body (D 2 ) have a continuous phase (A) of the polyamide resin and a dispersed phase (B) of the rubbery polymer having the reactive functional group with a morphology of 10% or more of an area covered with microparticles having a particle diameter of 1 to 100 nm and are generated by a reaction between the polyamide resin and the rubbery polymer having the reactive functional group, wherein the continuous phase (A) and the dispersed phase (B) are observed with an electron microscope.

13. The impact-absorbing member of claim 2 , wherein the member receives an impact force in a protective container.

14. The impact-absorbing member of claim 3 , wherein the member receives an impact force in a protective container.

15. The impact-absorbing member of claim 4 , wherein the member receives an impact force in a protective container.

16. The impact-absorbing member of claim 5 , wherein the member receives an impact force in a protective container.

Assignees

• Toray Industries

Inventors

• Suzuki Shigemitsu
• Akita Masaru
• Niwa Osamu
• UESUGI Tadayuki
• Inoue Takuya
• Hashimoto Kosaku

Classifications

• Y10T428/31725

  Of polyamide · CPC title

• B32B1/00

  Layered products having a non-planar shape · CPC title

• B32B2307/558

  Impact strength, toughness · CPC title

• B32B2250/02

  2 layers · CPC title

• B32B5/10

  characterised by a fibrous {or filamentary} layer reinforced with filaments · CPC title