Stampable Sheet and Molded Body Using Same
AssigneeMitsubishi Chemical Corporation
InventorsNobuaki Takata, Akihiro Yano, Hideyuki Shiraku, Kazunori Kawahara
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Abstract
Provided is a stampable sheet containing (A) a thermoplastic resin, (B) a flame retardant, (C) a dispersant, and (D) an inorganic fiber, wherein the content of the (D) inorganic fiber is 1 to 80% by mass based the total weight, and based on 100 parts by mass of the (B) flame retardant, the content of the (C) dispersant is more than 0 and 25 parts by mass or less. According to the present invention, it is possible to provide a stampable sheet which is excellent in strength, rigidity and flame shielding performance, and which is also excellent in workability such as stamping molding.
Claims13
1:
- A stampable sheet comprising (A) a thermoplastic resin, (B) a flame retardant, (C) a dispersant, and (D) an inorganic fiber, wherein the (D) inorganic fiber has a content of 1 to 80% by mass based on a total weight, and the (C) dispersant has a content of more than 0 and 25 parts by mass or less, based on 100 parts by mass of the (B) flame retardant.
2:
- The stampable sheet according to claim 1, wherein the (C) dispersant is a copolymer of an α-olefin and an unsaturated carboxylic acid.
3:
- The stampable sheet according to claim 1, wherein the (B) flame retardant is a phosphorus-based flame retardant.
4:
- The stampable sheet according to claim 1, wherein the (B) flame retardant is an intumescent flame retardant.
5:
- The stampable sheet according to claim 1, wherein the (D) inorganic fiber has an average fiber length of 0.1 mm or more.
6:
- The stampable sheet according to claim 1, wherein the (D) inorganic fiber is at least one selected from glass fiber, ceramic fiber, metal fiber and metal oxide fiber.
7:
- The stampable sheet according to claim 1, wherein the (A) thermoplastic resin is (A-1) a polypropylene-based resin, and the polypropylene-based resin has a content of 15 to 80% by mass based on the total weight.
8:
- The stampable sheet according to claim 1, wherein the (B) flame retardant has a content of 1 to 30% by mass based on the total weight.
9:
- The stampable sheet according to claim 1, obtained by impregnating a mat consisting of the (D) inorganic fiber with a resin composition containing the (A) thermoplastic resin, the (B) flame retardant, and the (C) dispersant.
10:
- The stampable sheet according to claim 9, wherein the mat is produced by needle punching a swirl (spiral) mat of a continuous glass or inorganic fiber.
11:
- A molded article obtained by stamping the stampable sheet according to claim 1.
12:
- A battery housing made of the molded article according to claim 11.
13:
- A stampable sheet comprising (A-1) a polypropylene-based resin, (B) a flame retardant, (C) a dispersant, and (D) an inorganic fiber, wherein the (A) polypropylene-based resin has a content of 15 to 80% by mass, the (B) flame retardant has a content of 1 to 30% by mass, the (D) inorganic fiber has a content of 3 to 60% by mass, and based on 100 parts by mass of the (B) flame retardant, the (C) dispersant has a content of 0.01 to 10 parts by mass.