A resin-metal composite comprising a resin member and a metal member made from a composition containing an electrically insulating resin.

Abstract

To obtain a resin-metal composite with excellent productivity and reliability due to improved low burr formation by having superior retention stability of the resin component. A resin-metal composite comprising a resin component and a metal component made of a composition containing an electrically insulating resin, wherein the melting point (Tm) of the electrically insulating resin in the composition, as determined by differential scanning calorimetry, is 300 to 340°C, and the full width at half maximum of the Tm peak is 5.0 to 20.0°C.

Claims

1. A resin-metal composite comprising a resin member and a metal member, wherein the melting point (Tm) of the electrically insulating resin in the composition, determined by differential scanning calorimetry, is 300 to 340°C, and the full width at half maximum of the Tm peak is 5.0 to 20.0°C. The above Tm is the endothermic peak temperature (Tm) observed when a composition containing an electrically insulating resin is heated from room temperature at a temperature increase of 20°C / min in differential scanning calorimetry. １ After the observation of ), Tm １ Tm is the endothermic peak temperature observed when a sample is held at +20°C for 5 minutes, then cooled to room temperature at a rate of 20°C / min, and then heated again from room temperature at a rate of 20°C / min. Furthermore, when a perpendicular line is drawn from the peak top of the obtained Tm peak to the baseline, and a straight line is drawn through the midpoint of the perpendicular line and parallel to the baseline, the distance between the intersection points of the two points with the Tm peak is the full width at half maximum (°C).

2. The resin-metal composite according to claim 1, wherein the resin-metal composite is an electrical / electronic component having contact points between metals.

3. The resin-metal composite according to claim 1 or claim 2, wherein the resin member of the resin-metal composite has a plurality of metal insertion holes, and the thinnest thickness between adjacent metal insertion holes is 0.50 mm or less.

4. A resin-metal composite according to claim 1 or 2, wherein the composition containing an electrically insulating resin has a crystallization temperature (Tc) of 290 to 325°C as determined by differential scanning calorimetry: The above Tc is the endothermic peak temperature (Tm) observed in differential scanning calorimetry when a composition containing an electrically insulating resin is heated from room temperature at a temperature increase of 20°C / min. １ After the observation of ), Tm １ This is the exothermic peak temperature observed when a substance is held at +20°C for 5 minutes and then cooled to room temperature at a rate of 20°C / min.

5. The resin-metal composite according to claim 1 or claim 2, wherein the electrically insulating resin is a resin selected from polyamide resin, polyimide resin, polyphenylene sulfide resin, polyetheretherketone resin, polytetrafluoroethylene resin, and liquid crystal polyester resin.

6. The resin-metal composite according to claim 1 or claim 2, wherein the electrically insulating resin is a liquid crystal polyester resin.

7. The resin-metal composite according to claim 1 or 2, wherein the electrically insulating resin is a liquid crystal polyester resin (A) containing 20 to 80 mol% of structural units derived from aromatic hydroxycarboxylic acid, 10 to 40 mol% of structural units derived from aromatic diol, and 10 to 40 mol% of structural units derived from aromatic dicarboxylic acid, based on 100 mol% of the total structural units.

8. The resin-metal composite according to claim 1 or 2, wherein the electrically insulating resin is a liquid crystal polyester resin (A) containing, with respect to 100 mol% of total structural units, 20 to 80 mol% of structural units derived from aromatic hydroxycarboxylic acid, 10 to 40 mol% of structural units derived from aromatic diol, and 10 to 40 mol% of structural units derived from aromatic dicarboxylic acid, and is a liquid crystal polyester resin that contains the following structural units (III) and (IV) and satisfies the following formulas (a) and (b): 5≦[IV]≦18...(a) 0<[III] / [IV]<1.5...(b) [III] and [IV] represent the content (mol%) of structural units (III) and (IV) relative to 100 mol% of the total structural units of the liquid crystal polyester resin (A), respectively. 【Chemistry 1】

9. The resin-metal composite according to claim 1 or 2, wherein the electrically insulating resin is a liquid crystal polyester resin (A) containing, with respect to 100 mol% of total structural units, 20 to 80 mol% of structural units derived from aromatic hydroxycarboxylic acid, 10 to 40 mol% of structural units derived from aromatic diol, and 10 to 40 mol% of structural units derived from aromatic dicarboxylic acid, and further comprising the following structural units (I) and (II), wherein the molar ratio of structural units (I) to (II) ([I] / [II]) is 5 to 20: [I] and [II] represent the content (mol%) of structural units (I) and (II) relative to 100 mol% of the total structural units of the liquid crystal polyester resin (A), respectively. 【Chemistry 2】

10. The resin-metal composite according to claim 1 or claim 2, wherein the composition containing an electrically insulating resin further contains an inorganic filler (B), and the inorganic filler (B) is present in an amount of 10 to 200 parts by weight per 100 parts by weight of the electrically insulating resin.

11. The resin-metal composite according to claim 1 or claim 2, wherein the electrically insulating resin is a liquid crystal polyester resin (A) containing 20 to 80 mol% of structural units derived from aromatic hydroxycarboxylic acid, 10 to 40 mol% of structural units derived from aromatic diol, and 10 to 40 mol% of structural units derived from aromatic dicarboxylic acid, based on 100 mol% of total structural units, and the composition containing the electrically insulating resin is a liquid crystal polyester resin composition containing 10 to 200 parts by weight of inorganic filler (B) per 100 parts by weight of liquid crystal polyester resin (A).

Images