Liquid crystal polyester amide, liquid crystal polyester amide resin composition, and molded article
View Patent ↗A liquid crystal polyester amide of the present invention includes 10 mol % to 65 mol % of a structural unit represented by the following formula (1), 3 mol % to 17.5 mol % of a structural unit represented by the following formula (2), 5 mol % to 20 mol % of a structural unit represented by the following formula (3), 7.5 mol % to 42 mol % in total of at least one of a structural unit represented by the following formula (4-1) and a structural unit represented by the following formula (4-2), and 2.5 mol % to 40 mol % in total of at least one of a structural unit represented by the following formula (5-1) and a structural unit represented by the following formula (5-2), and has a melting point of 300° C. or higher.
1. A liquid crystal polyester amide resin composition, comprising:
a liquid crystal polyester amide having a melting point of 300° C. or higher, comprising:
10 mol % to 65 mol % of a structural unit represented by the following formula (1);
3 mol % to 17.5 mol % of a structural unit represented by the following formula (2);
5 mol % to 20 mol % of a structural unit represented by the following formula (3);
7.5 mol % to 42 mol % of at least one of a structural unit represented by the following formula (4-1) and a structural unit represented by the following formula (4-2); and
2.5 mol % to 40 mol % of at least one of a structural unit represented by the following formula (5-1) and a structural unit represented by the following formula (5-2); and
5 parts by mass to 250 parts by mass with respect to 100 parts by mass of the liquid crystal polyester amide of an inorganic filler; and
wherein an Izod impact strength of a molded article formed of the liquid crystal polyester amide resin composition is 60 kJ/m 2 or greater and a tensile strength of the molded article is 110 MPa or greater
2. A molded article formed of the liquid crystal polyester amide resin composition according to claim 1 .
3. The molded article according to claim 2 , having a load deflection temperature of 240° C. or higher.
4. The molded article according to claim 2 , having a tensile elongation of 3.0% or greater.
5. The molded article according to claim 2 , having a tensile modulus of 15,000 MPa or less.
6. The molded article according to claim 2 , having a bending modulus of 13,000 MPa or less.
7. An injection-molded article which is formed of the liquid crystal polyester amide resin composition according to claim 1 and includes a thin-wall portion having a thickness of 0.05 mm to 0.5 mm.
8. The liquid crystal polyester amide resin composition according to claim 1 , wherein a load deflection temperature of a molded article formed of the liquid crystal polyester amide resin composition is 240° C. or higher.
9. The liquid crystal polyester amide resin composition according to claim 1 , wherein a tensile elongation of a molded article formed of the liquid crystal polyester amide resin composition is 3.0% or greater.
10. The liquid crystal polyester amide resin composition according to claim 1 , wherein a tensile modulus of a molded article formed of the liquid crystal polyester amide resin composition is 15,000 MPa or less.
11. The liquid crystal polyester amide resin composition according to claim 1 , wherein a bending modulus of a molded article formed of the liquid crystal polyester amide resin composition is 13,000 MPa or less.
12. The liquid crystal polyester amide resin composition according to claim 1 , wherein a bending strength of a molded article formed of the liquid crystal polyester amide resin composition is 140 MPa or greater.
13. The liquid crystal polyester amide resin composition according to claim 1 , wherein a bending modulus of a molded article formed of the liquid crystal polyester amide resin composition is 13,000 MPa or less and a bending strength of the molded article is 140 MPa or greater.