Reinforcing fiber mat, and fiber-reinforced resin forming material and method of producing same
US-2020354532-A1 · Nov 12, 2020 · US
Fiber-reinforced resin material and production method therefor
US11873376B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11873376-B2 |
| Application number | US-201917287171-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 17, 2019 |
| Priority date | Oct 31, 2018 |
| Publication date | Jan 16, 2024 |
| Grant date | Jan 16, 2024 |
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- Title
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Abstract
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A fiber-reinforced resin material used for molding a fiber-reinforced resin which includes a matrix resin and reinforcing fiber bundles A including chopped fiber bundles each including 100 or more single fibers, wherein the product of an average porosity within fiber bundles Pfav (−) and an average fiber bundle thickness tfav (mm) is 0 mm or more and 0.01 mm or less and a porosity of composite Pc (−) is 0.02 or more and 0.4 or less, and a method for producing the same. The fiber-reinforced resin material is a molding material excellent in terms of productivity and reduction in LCA, which can give high mechanical properties to a molded article using the molding material and further which is excellent also in flowability during molding.
First claim
Opening claim text (preview).
The invention claimed is: 1. A fiber-reinforced resin material used for molding a fiber-reinforced resin that comprises a matrix resin and reinforcing fiber bundles A comprising chopped fiber bundles each including 100 or more single fibers, wherein a product of an average porosity within fiber bundles P fav (−) represented by equation (1) and an average fiber bundle thickness t fav (mm) represented by equation (2) is 0 mm or more and 0.01 mm or less and a porosity of composite P c (−) represented by equation (3) is 0.02 or more and 0.4 or less: P fav = 1 n ∑ i = 1 n p 2 i v f 2 i + v m 2 i + p 2 i ( 1 ) t fav = 1 n ∑ i = 1 n t fi ( 2 ) P c = ∑ j = 1 k p 1 j + ∑ i = 1 n p 2 i ∑ x = 1 l v f 1 x + ∑ i = 1 n ( v f 2 i + v m 2 i + p 2 i ) + v
Assignees
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Classifications
- C08J5/06Primary
using pretreated fibrous materials · CPC title
of reinforcement of definite length with a matrix in solid form, e.g. powder, fibre or sheet form (calendering B29C70/506) · CPC title
with carbon fibres · CPC title
- B29B15/122Primary
with a matrix in liquid form, e.g. as melt, solution or latex · CPC title
Coating or impregnating {independently of the moulding or shaping step}(applying liquids in general B05) · CPC title
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- What does patent US11873376B2 cover?
- A fiber-reinforced resin material used for molding a fiber-reinforced resin which includes a matrix resin and reinforcing fiber bundles A including chopped fiber bundles each including 100 or more single fibers, wherein the product of an average porosity within fiber bundles Pfav (−) and an average fiber bundle thickness tfav (mm) is 0 mm or more and 0.01 mm or less and a porosity of composite …
- Who is the assignee on this patent?
- Toray Industries
- What technology area does this patent fall under?
- Primary CPC classification C08J5/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 16 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).