JPS6279255A - Amino resin molding material - Google Patents

Abstract

PURPOSE:The titled molding material improving smoothness on the surface of molded article, providing a molded article having improved luster, obtained by blending an amino resin with a reinforcing material having specific average length and longest length. CONSTITUTION:An amino resin (e.g., urea resin, etc.,) is blended with (A) a reinforcing material (e.g., pulp, wood, etc.,) having 0.02-0.05mm average length and 0.15mm longest length, (B) a filler (e.g., calcium carbonate, clay, etc.,), (D) a releasant and (E) a colorant, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to amino resin molding materials used for wiring devices, electrical appliances, kitchen appliances, and the like.

[Background technology]

Traditionally, amino resin molding materials have excellent arc resistance, tracking resistance, single-temperature insulation, and flame resistance.

Due to its colorability, surface hardness, and solvent resistance, it is widely used in wiring devices, etc., but there has been a strong demand for improved outer surfaces, and in particular, there has been a strong demand for improving the gloss of molded products.

[Purpose of the invention]

An object of the present invention is to provide an amino resin molding material that can produce a glossy A-molded product.

[Disclosure of the invention]

The present invention is based on an amino resin melt molding material made by adding a reinforcing material, a filler, a hardening agent, a mold release agent, and an a coloring agent to an amino resin. Q, Q5a, The amino resin molding material is characterized by the addition of a reinforcing material with a maximum length of 0.15fl, which can significantly improve the smoothness of the molded product surface, resulting in glossy molded products. The present invention will now be described in detail.

As the reinforcing material used in the present invention, pulp, wood flour, glass fiber, asbestos fiber, rock wool fiber, cotton powder, etc. can be used. It is necessary that it is 0.15ff or less.

This is because if the average length is less than 0.021'1, it will not be effective as a reinforcing material, and if the average length exceeds 0.051ff, the gloss of the molded product will decrease. Powdered fillers such as calcium carbonate, limestone, talc, aluminum hydroxide, gypsum, magnesium carbonate, silica, and finely divided silicic acid can be used as the filler, but are not particularly limited.

Amino resins include area resin and melamine resin.

It is also possible to use amino resins such as guanamine resin, mixtures, and modified products. As for the curing agent, mold release agent, coloring agent, etc., those used for amino resin molding materials can be used as they are.

The present invention will be explained below based on examples.

The materials were kneaded in a kneader according to the formulation tables of Examples 1 and 2 and Comparative Example Table 1, and then ground to obtain melamine chili resin molding materials.

Notes to Table 1 *l Maximum length Q, l ff 2 Maximum length Q, 4 u [Effect of the invention] Dish-shaped molded products were molded with the melamine resin molding materials of Examples 1 and 2 and Comparative Example, and the gloss As clearly shown in Table 2, the performance of molded articles obtained from the molding material of the present invention was good, confirming the superiority of the amino resin molding material of the present invention.

Claims (1)

[Claims] (1) Amino resin with reinforcing material, filler, curing agent, mold release agent,
In amino resin molding materials with addition of colorants, etc.
An amino resin molding material characterized in that a reinforcing material having an average length of 0.02 to 0.05 mm and a maximum length of 0.15 mm is added as a reinforcing material.