JPS59105048A - Phenolic resin molding material - Google Patents

Abstract

PURPOSE:To provide the titled molding material having well-balanced properties, for example, having high heat resistance and mechanical strength and excellent in wear resistance and electrical characteristics, consisting mainly of a phenolic resin, a xylene resin, glass fiber, natural org. fiber and kaolin clay. CONSTITUTION:A phenolic resin, a xylene resin or a xylene-modified phenolic resin, 5-40wt%, pref. 15-25wt% glass fiber, 5-30wt%, pref, 8-20wt% natural org. fiber and 5-30wt. kaolin clay are blended together as main ingredients to obtain the desired phenolic resin molding material, each quantity being based on that of the molding material. If desired, additives such as hardener, colorant, flame retarder, plasticizer, etc. may be added.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a phenolic resin molding material excellent in heat resistance, mechanical strength, abrasion resistance, J5 and electrical properties.

[Technical background of the invention and its problems Cotenol resin is widely used as a molding material prepared by mixing and kneading fillers, plasticizers, colorants, mold release agents, etc.

In general, phenolic resin molding material Δ''31 uses wood flour as the main filler, so it has drawbacks in heat resistance, mechanical strength, abrasion resistance, etc. To improve these drawbacks, asbestos, There are products that use calcium monoaltate, talc, and other substances as fillers. Although this improves heat resistance, it has drawbacks in mechanical strength d3 and abrasion resistance. Let's try to improve this drawback. There are fabrics using granoite and granoite as fillers, but although they improve wear resistance, they lack mechanical strength and electrical properties. Those using ff-ff as a filler have high heat resistance and mechanical strength, but have a drawback in abrasion resistance (particularly abrasion of the mating metal material).

In addition, those using natural IMlaN as a JI filler have good mechanical strength and wear resistance, but have a drawback in heat resistance. Excellent heat resistance, mechanical strength,
Wear resistance 1'1. , d,'; and the electrical characteristics are 1
= A well-balanced phenolic resin molding saw is in demand.

[Object of the Invention] The present invention provides a phenolic resin molding method 4A that has an excellent balance of heat resistance, mechanical strength, abrasion resistance d'3, and electrical properties that eliminates the above-mentioned drawbacks. The purpose is to

“Summary of the Invention J The present invention was developed through intensive research to achieve the above object.
As a result, it has been discovered that the following molding material has the above-mentioned objective characteristics.

That is, the present invention provides (a) a phenolic resin, (b) a xylene resin or a xylene-modified 71-nor resin, (C
) Grass fiber (f, (d) Natural organic fiber 1, (e) Phenol resin molding rate, which is characterized by having kaolin clay as the main component, relative to the molding material / T: Force'
7 Su4Illill' [5-40% by weight, TenrA
'5S tjW It is a well-balanced phenolic resin molding product with excellent mechanical strength, abrasion resistance, and electrical properties.

The phenolic resin used in the present invention is modified with phenols such as phenol and cresol, or molasses, lignin, xylene, naphthalene, and Gd-based aromatic hydrocarbons.
The novolac type phenol resin initial condensate, or the resol type noenol resin Hatsuho condensate and the novolac are produced by blending the nols, noj rumin, and paraformaldehyde in an appropriate molar ratio and reacting them under a catalyst. Examples include 1b, which is a combination of a type phenol resin precondensate and a resol type 71nol (I fatty acid condensate).

Examples of the xylene resin or xylene-modified phenol resin used in the present invention (C) include xylene-modified 71-nol resins made by reacting -1 silene formaldehyde resin or xylene formaldehyde 4-1 fat with phenol or alkylno-nol. It will be done.

The glass shoulder 1 used in the present invention is 2 to 20 μm.
A land in which single fibers of diameter are converged is o, 1 to 25 m.
Examples include ``Shino'' cut into m.

In addition, the natural organic fibers used in the present invention include cotton flock, α-lerulose, flax, hemp, 1[1 linen, cotton woven fabric,
Fluff), etc.) (included).

Further, examples of the power Δ-link clay used in the present invention include dry classified kaolin clay, acidic hydrated kaolin clay, neutral hydrated kaolin clay, calcined kaolin clay, and Sir 7A Budik Δ-link clay.

As described above, the present invention is a 71-nor resin molding material 3'+1 whose main components are phenol resin, xylene resin or xylene-modified phenol resin, glass fiber, natural organic fiber d3, and kaolin clay. The blending ratio will be explained and explained below.

The blending ratio of glass fiber is 5 to 40% by weight based on the molding material. If it is less than 5 m%, the mechanical strength will be weak and undesirable. If it exceeds 1% for 40 hands, the wear resistance will deteriorate. More preferably, it is 15 to 25% by weight. The blending ratio of natural organic fibers to the molding material is 5 to 5.
It is 30%.

If it is less than 5% by weight, the mechanical strength will be weak, and if it exceeds 30% by weight, the heat resistance will be poor. More preferably, it is in the range of 8 to 20%.

The blending ratio of Riki A link clay is 5 to 3 to the molding material.
It is 0% by weight. If it is less than 5% by weight, there will be no effect on wear resistance and heat resistance, and if it exceeds 30% by weight, mechanical strength will be poor and this is not convenient. Therefore glass tvta, natural stone 1m1
Jj fiber J3 and force A link clay are each limited to the above ranges.

In addition to the above, the molding material 131 of the present invention may contain additives such as a curing agent, a coloring agent, a curing accelerator, a flame retardant, a mold release agent, a lubricant, a coupling treatment agent, a plasticizer, etc., as necessary. I can do it.

The phenolic resin molded i.DELTA.i'q of the present invention is manufactured as follows. Phenol resin, xylene resin or xylene modified ('l)J nord resin with a specified W,
Glass fiber, natural organic fiber, A3 and A link clay,
Mix curing agent, coloring agent, curing accelerator, flame retardant, mold release agent, coupling treatment agent, plasticizer as necessary, and heat and knead until uniformly dispersed. Then cold 19
Avoid assimilation and crush to appropriate thickness using a crusher.

"Effects of the Invention" The 71-nol resin molding material of the present invention has high heat resistance, strong mechanical strength, wear resistance (17) and excellent electrical properties (UJ3), and is extremely well-balanced.

EXAMPLES OF THE INVENTION The present invention will be specifically explained below with reference to Examples, but the present invention is not limited to these Examples. Hereinafter, "%j" means "% by weight".

Example 1゜40% novolac type phenolic resin, 5% xylene modified phenolic resin, 1 to 7% hexyl methylene amine,
Mix 20% glass fiber, 10% cotton flock, 10% kaolin clay and 8% other additives at 1;) temperature,
After kneading and cooling at ~110°C, the mixture was crushed to remove the phenolic resin molding material. This molding material was molded and hardened in a mold heated to 170°C for compression molding and injection molding.
The characteristics of the IC molded product were measured and are shown in Table '1.

Example 2 40% resol type phenol resin, 10% silene modified phenolic resin and glass i! , 1lfl 15%
, 15% kaolin clay, and 5% Zonosen additive were treated in the same manner as in Example 1 to obtain a phenolic resin molding material. Next, a molded product was made in the same manner, and its characteristics were measured and are shown in Table 1.

Comparative Example 1° A molded material (°3) was obtained by treating 50% of novolac type phenolic resin, 8% of hexylimedelente 1 heramine, 35% of wood flour, and 7% of other additives in the same manner as in Example 1. We measured the characteristics of the molded product at -, so the first
Shown in the table.

Comparative example 2° resol type phenol 484 fat 50% and glass 4K f
f [45% and 5% of other additives were processed in the same manner as in Comparative Example 1 to form 4A slope 1! '7k. Next, a molded product was made in the same manner and its properties were measured, and the results are shown in Table C1.

Table 1 ◎ mark: Particularly good O mark: Good Δ mark; Slightly inferior ×: Inferior =331

Claims (1)

[Claims] 1. (a) Phenol resin (b) Xylene resin or xylene-modified phenol resin (C) Glass fiber (d) Natural organic fiber (e) A link clay as the main component. Phenolic resin molding material. 2. Claim 1, characterized in that it contains 5 to 40,000 m% of glass fiber, 5 to 30 wt. M% of natural fibers, and 5 to 30 wt.% of kaolin clay, based on the old molded material. The phenolic resin molding material described.