RESIN COMPOSITION AND RESIN MOLDED BODY
A resin composition contains cellulose acylate (A), a polyester resin (B), an ester compound (C) having a molecular weight of about 250 or more and about 2000 or less, and at least one type of particles (D) selected from glass particles and resin particles.
1 . A resin composition comprising:
cellulose acylate (A);
a polyester resin (B);
an ester compound (C) having a molecular weight of about 250 or more and about 2000 or less; and
at least one type of particles (D) selected from glass particles and resin particles.
2 . The resin composition according to claim 1 , further comprising at least one polymer (E) selected from core-shell structure polymers having a core layer and a shell layer formed on a surface of the core layer and containing a polymer of an alkyl (meth)acrylate, and olefin polymers including about 60 mass % or more of a structural unit derived from α-olefin.
3 . The resin composition according to claim 1 , further comprising a poly(meth)acrylate compound (F) including about 50 mass % or more of a structural unit derived from an alkyl (meth) acrylate.
4 . The resin composition according to claim 1 , wherein the cellulose acylate (A) is at least one selected from cellulose acetate propionate (CAP) and cellulose acetate butyrate (CAB).
5 . The resin composition according to claim 1 , wherein the polyester resin (B) is a polyhydroxyalkanoate.
6 . The resin composition according to claim 5 , wherein the polyester resin (B) is polylactic acid.
7 . The resin composition according to claim 1 , wherein the ester compound (C) is a fatty acid ester compound.
8 . The resin composition according to claim 7 , wherein the ester compound (C) is an adipic acid ester-containing compound.
9 . The resin composition according to claim 1 , wherein
the glass particles have an average particle size of about 20 μm or more and about 50 μm or less, and
the resin particles have an average particle size of about 30 μm or more and about 80 μm or less.
10 . The resin composition according to claim 9 , wherein
a ratio (average particle size/molecular weight) of the average particle size of the glass particles to the molecular weight of the ester compound (D) is about 20/1800 or more and about 40/300 or less, and
a ratio (average particle size/molecular weight) of the average particle size of the resin particles to the molecular weight of the ester compound (D) is about 30/1800 or more and about 80/300 or less.
11 . The resin composition according to claim 1 , wherein the resin particles are at least one type of particles selected from polyimide resin particles, polyarylate resin particles, and nylon resin particles.
12 . The resin composition according to claim 1 , wherein a mass ratio (B/A) of the polyester resin (B) to the cellulose acylate (A) is about 0.05 or more and about 0.5 or less.
13 . The resin composition according to claim 1 , wherein a mass ratio (C/A) of the ester compound (C) to the cellulose acylate (A) is about 0.02 or more and about 0.15 or less.
14 . The resin composition according to claim 1 , wherein a mass ratio (D/A) of the particles (D) to the cellulose acylate (A) is about 0.02 or more and about 0.3 or less.
15 . The resin composition according to claim 1 , wherein a mass ratio (D/C) of the particles (D) to the ester compound (C) is about 0.15 or more and about 11 or less.
16 . A resin molded body comprising the resin composition according to claim 1 .
17 . The resin molded body according to claim 16 that is an injection-molded body.