JPS62132954A - Phenolic resin molding material - Google Patents

Abstract

PURPOSE:A phenolic resin molding material, containing a specific amount of cherry wood meal and useful for lacquer ware used in tableware, kitchen utensil parts, household articles, etc., having improved woody feeding such as sound quality, surface hardness, thermal conductivity, lightweight, etc. CONSTITUTION:A phenolic resin molding material obtained by blending (A) novolak type phenolic resin, resol type phenolic resin or modified phenolic resin (a blend prepared by adding 5-15pts.wt. to 100pts.wt. novolak type phenolic resin when used) with (B) 30-70wt%, based on the total amount, cherry wood meal containing particles wholly passing through preferably a 80-mesh screen, preferably pulverized cherry bark and, as necessary, adding an inorganic filler, mold release agent, colorant, etc., kneading the resultant mixture, pulverizing the kneaded mixture and, an necessary, granulating the pulverized mixture.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a phenolic resin molding material for lacquerware used for tableware, kitchen appliance parts, household goods, miscellaneous goods, etc.

, [Background technology] Conventionally, molding materials for lacquerware used for tableware, wt-ware utensil parts, household goods, miscellaneous goods, etc. are used to obtain products similar to lacquerware by applying a coating to the surface of the molded product. Providing a woody feel was important in terms of sound quality, surface hardness, thermal conductivity, lightness, etc., and phenolic resin molding materials containing cedar wood powder were used, but the woody feel was insufficient.

[Purpose of the invention]

An object of the present invention is to provide a molding material for lacquerware that has a woody feel.

[Disclosure of the invention]

The present invention is a pheno-μ-Ji 11M molding material characterized by containing ~70% by weight (hereinafter simply referred to as %) of Sakuragi powder, which has excellent sound quality, surface hardness, thermal conductivity, lightness, etc. This invention was able to improve the wood texture, and the present invention will be described in detail below.

The Sakuragi powder used in the present invention is obtained by pulverizing an abrasive material, and must contain 30 to 70% of the total amount. That is, if it is less than 70%, it will not be possible to provide a sufficient woody feel, and if it exceeds 70%, the moldability will deteriorate. The particle size of Sakuragi powder is preferably such that it can be passed through an 80 Metsusier sieve. That is, if the particle size remains on the 80 Messier sieve, the appearance of the molded product tends to deteriorate and the commercial value after painting tends to decrease. Further, it is preferable that the cherry tree powder is one obtained by pulverizing only cherry bark, since this can further improve the wood texture. Phenol resins are obtained by blending phenol, cresol, xylenop, and other pheno-μs alone or in mixtures with formalin, buff formaldehyde, and other formaldehydes in a predetermined molar ratio, and reacting them under an acidic catalyst. Novofook type phenol resin, resol type phenol resin obtained by reaction under an alkaline catalyst, or pheno-μ resin modified with these molasses, lignin, naphthalene, xylene, or petroleum-based aromatic hydrogen can be used. In addition, when using Novohook type phenolic resin, hexamine is used as a curing agent, and resin 1
It is added in an amount of 5 to 15 parts per 1 part of 00gj (hereinafter simply referred to as part). In addition to phenolic resin, curing agent, and Saki powder, inorganic fillers, mold release agents, coloring agents, etc. are added as necessary, mixed, mixed, crushed, and further granulated as necessary to form phenolic resin. After obtaining the material, the phenolic resin molding material is subjected to compression molding, transfer molding, injection molding,
A molded product for lacquerware is obtained by heating and press molding by any means such as extrusion molding.

The present invention will be explained below based on examples.

Examples 1 to 3 and the conventional product 086 mol of formaldehyde was added to 1 mol of phenol/L in 37% formalin, and the mixture was reacted with a hydrochloric acid catalyst under acidic conditions, and then dehydrated and boiled down to obtain Novofook type phenol with a melting point of 90°C. /L/resin was obtained, and the phenol resin was mixed, kneaded, and pulverized according to Table 1 to obtain a pheno-IV resin molding material, and the phenol/L/at finger molding material was molded at a molding pressure of 150 psi and 150'013. A molded product for lacquerware was obtained by compression molding for 1 minute.

〔Effect of the invention〕

As is clear from Table 2, the performance of the lacquerware molded products of Examples 1 to 3 and the conventional example was good, confirming the superiority of the present invention.

Table 2

Claims (2)

[Claims] (1) A phenolic resin molding material containing 30 to 70% by weight of Sakuragi powder. (2) The phenolic resin molding material according to claim 1, wherein the cherry tree powder is cherry bark powder.