Liquid crystal polyester resin composition
An object of the present invention is to provide a liquid crystal polyester resin composition in which satisfactory fluidity and excellent mechanical properties as well as flame retardancy are obtained, and the generation of particles is suppressed, and a molded article composed of the liquid crystal polyester resin composition. The present invention relates to a liquid crystal polyester resin composition containing: 100 parts by mass of a liquid crystal polyester (A) including repeating units represented by the formulas (I) to (III), wherein Ar 1 and Ar 2 each represent one or more divalent aromatic groups, and p, q and r each represent a composition ratio (mol %) of each repeating unit in the liquid crystal polyester (A) and satisfy the following conditions, 35≤p≤90, 5≤q≤30, and 5≤r≤30; and 1 to 150 parts by mass of a fibrous titanium oxide (C).
1. A liquid crystal polyester resin composition comprising:
100 parts by mass of a liquid crystal polyester (A) consisting of repeating units represented by the formulas (I) to (III),
wherein Ar 1 and Ar 2 each represent one or more divalent aromatic groups, and p, q and r each represent a composition ratio (mol %) of each repeating unit in the liquid crystal polyester (A) and satisfy the following conditions,
35≤p≤90,
5≤q≤30, and
5≤r≤30; and
1 to 150 parts by mass of a fibrous titanium oxide (C) based on 100 parts by mass of the liquid crystal polyester (A), wherein the fibrous titanium oxide (C) has a number average fiber length (L) of 1 μm to 50 μm, a number average fiber diameter (D) of 0.05 μm to 2.0 μm, and L/D of 3 to 50.
2. The liquid crystal polyester resin composition according to claim 1 , the liquid crystal polyester resin composition comprising:
a liquid crystal polyester (A) consisting of repeating units represented by the formulas (I) to (III),
wherein Ar 1 and Ar 2 each represent one or more divalent aromatic groups, and p, q and r each represent a composition ratio (mol %) of each repeating unit in the liquid crystal polyester (A) and satisfy the following conditions,
35≤p≤90,
5≤q≤30, and
5≤r≤30;
a liquid crystal polyester (B) including repeating units represented by the formulas (IV) and (V),
wherein s and t each represent a composition ratio (mol %) of each repeating unit in the liquid crystal polyester (B) and satisfy the following conditions,
80/20≤s/t≤60/40; and
a fibrous titanium oxide (C), wherein the fibrous titanium oxide (C) has a number average fiber length (L) of 1 to 50 m, a number average fiber diameter (D) of 0.05 μm to 2.0 m, and L/D of 3 to 50,
wherein
a mass ratio [A/B] of (A) to (B) is 90/10 to 45/55, and
a content of (C) is 1 to 150 parts by mass based on 100 parts by mass of a total amount of (A) and (B).
3. A molded article comprising the liquid crystal polyester resin composition according to claim 1 .
4. The molded article according to claim 3 , wherein the molded article is a component constituting one selected from the group consisting of connector, switch, relay, capacitor, coil, transformer, camera module, antenna, chip antenna and mini-breaker.