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Encapsulant composition for use with electrical components in hard disk drives, and related electrical components and hard disk drives

  • US 10,597,486 B2
  • Filed: 10/31/2017
  • Issued: 03/24/2020
  • Est. Priority Date: 11/02/2016
  • Status: Active Grant
First Claim
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1. A method of coating one or more surfaces of at least a portion of an electrical structure for use in a hard disk drive, wherein the method comprises:

  • a) applying an uncured encapsulant composition on at least a portion of a surface of the electrical structure, wherein the uncured encapsulant composition comprises;

    i) uncured epoxy resin component; and

    ii) an inorganic filler particle component, wherein the inorganic filler particle component is present in an amount of at least 0.05% by weight of the uncured encapsulant composition; and

    b) curing the encapsulant composition, wherein the cured encapsulant composition has a Total Outgassing value of 1000 nanograms per gram or less of outgassed compounds of cured encapsulant composition according to Outgassing Test Procedure.

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