Polyacetal resin composition, molded article and method for manufacturing polyacetal resin composition
View Patent ↗To provide a polyacetal resin composition which is good sliding characteristics and is less likely to produce the blister; a molded article; and a method for manufacturing the polyacetal resin composition. The polyacetal resin composition containing: (A) 100 parts by mass of a polyacetal resin; (B1) a polyolefin resin grafted with a silicone compound; (B2) a non-grafted silicone compound; and (C) 0.5 to 1.8 parts by mass of a polyolefinic lubricant, with a total of content of the silicone compound in the (B1) polyolefin resin and content of the (B2) non-grafted silicone compound, being adjusted to 0.6 to 2.5 parts by mass, per 100 parts by mass of the (A) polyacetal resin, and with (B1)/(B2), which is a ratio by mass of the content of the (B1) polyolefin resin and the content of the (B2) non-grafted silicone compound, being adjusted to 68/32 to 45/55.
1. A polyacetal resin composition comprising:
(A) 100 parts by mass of a polyacetal resin;
(B1) a polyolefin resin grafted with a silicone compound;
(B2) a non-grafted silicone compound; and
(C) 0.5 to 1.8 parts by mass of a polyolefinic lubricant,
with a total of content of the silicone compound in the (B1) polyolefin resin and content of the (B2) non-grafted silicone compound, being adjusted to 0.6 to 2.5 parts by mass, per 100 parts by mass of the (A) polyacetal resin, and
with (B1)/(B2), which is a ratio by mass of the content of the (B1) polyolefin resin and the content of the (B2) non-grafted silicone compound, being adjusted to 66/34 to 45/55.
2. The polyacetal resin composition of claim 1 ,
wherein content of the (C) polyolefinic lubricant is 0.7 to 1.8 parts by mass, per 100 parts by mass of the (A) polyacetal resin.
3. A molded article obtainable by molding the polyacetal resin composition described in claim 1 .
4. The molded article of claim 3 , wherein content of the (C) polyolefinic lubricant is 0.7 to 1.8 parts by mass, per 100 parts by mass of the (A) polyacetal resin.
5. The molded article of claim 3 , wherein the molded article is a sliding component.
6. A method for manufacturing the polyacetal resin composition described in claim 1 , the method comprising melt-kneading a master batch obtained by kneading the (B2) non-grafted silicone compound into the (A) polyacetal resin, together with the (A) polyacetal resin, and the (B1) polyolefin resin grafted with a silicone compound.