JPS6126623A - Epoxy resin molding material - Google Patents

Abstract

PURPOSE:The titled molding material having improved heat resistance and storage stability, obtained by blending a novolak type epoxy resin with a novolak type phenolic resin, an amine curing agent, a filler, a releasing agent, a colorant, etc. CONSTITUTION:A novolak type epoxy resin (preferably 15-50wt% epoxy resin is used based on total amounts) is blended with a novolak type phenolic resin, an amine curing agent, a filler, a reinforcing agent, a releasing agent, a colorant, etc., kneaded and ground to give the aimed molding material.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an epoxy resin molding material for producing electronic equipment, electrical equipment, automobile parts, ship parts, kitchen utensils, miscellaneous goods, and the like.

[Background technology]

Conventional heat-resistant molding materials have mainly used phenolic resins, but recent resin molded products are increasingly required to be heat resistant, and conventional phenolic resin molded products tend to blister due to heat during use, resulting in decreased performance. There were problems that led to destruction.

[Purpose of the invention]

An object of the present invention is to provide an epoxy resin molding material with excellent heat resistance and storage stability.

[Yi indication of invention]

The present invention is an epoxy resin molding material characterized by containing additives such as a novolac type phenol resin, an amine curing agent, a filler, a mold release agent, and a coloring agent in a novolac type epoxy resin, and has excellent heat resistance. By using a novolac type epoxy resin, the heat resistance was improved. The present invention will be described in detail.

The epoxy resin used in the present invention is a novolac type epoxy resin such as a phenol novolac type epoxy resin or a cresol novolac type epoxy resin.
Equivalents are arbitrary. Novolac-type phenol tA Fatty L, includes phenol novolac type, cresol novolac type, xylenol novovac type, and also novosic type phenol modified with molasses, lignin, xylene, naphthalene, petroleum-based aromatic hydrochloride resin, etc. It also includes resin. As for additives such as amine curing agents, fillers, reinforcing agents, mold release agents, and coloring agents, commonly used additives can be used as they are.

Further, the amount of the novolak type epoxy resin is not particularly limited, but it is preferable to use a weight of ω to ω (simply expressed as %) of the total amount. That is, if it is less than 15%, the appearance of the molded product tends to deteriorate, and if it exceeds 50%, the heat resistance tends to decrease. An epoxy resin molding material is obtained by mixing, mixing, pulverizing, and, if necessary, granulating a compound of these resins, crosslinking agents, curing agents, fillers, and the like.

The present invention will be explained below using examples.

The epoxy resin molding material was obtained by blending, mixing, and pulverizing according to the formulation table of Examples 1 and 2 and Conventional Example Table 1, and the molding material was molded at a molding pressure of 80 #/
d. Molding was performed at 170″C for 3 minutes to obtain a commutator molded product.

Table 1 [Effects of the Invention] The storage stability of the molding materials of Examples 1 and 2 and the conventional example, the heat resistance of the molded products, and the rotational sag as a commutator are clearly shown in Table 2. The performance of the molding material was well confirmed to be superior to that of the present invention.

Table 2

Claims (1)

[Claims] (1) An epoxy resin molding material comprising a novolak epoxy resin containing additives such as a novolak phenol resin, an amine curing agent, a filler, a mold release agent, and a coloring agent.