JPS58101143A - Molding material of thermosetting resin - Google Patents

Abstract

PURPOSE:A composition providing a molded article having good surface, having improved releasability without causing contamination on a mold, obtained by blending a phenolic resin composition and/or an epoxy resin composition with glycerol mono-, di-, or tristearate as a release agent. CONSTITUTION:A phenolic resin and/or epoxy resin is blended with 0.10- 1.0wt%, preferably 0.25-0.6wt% one or more selected from glycerol monostearate, glycerol distearate, and glycerol tristearate, Wax may be used with the release agent in a weight ratio of about 1:2.

Description

[Detailed Description of the Invention] The present invention! Regarding current thermosetting resin molding materials
It is. More specifically, the present invention relates to a molding material that is useful for eliminating contamination in the mold cavity, clouding on the surface of molded products, S-type defects, etc. during compression molding, transfer molding, and injection molding.

Generally molded with 2-enol resin molding material or epoxy resin molding material, aluminum temperature 160℃~190℃
◎The nine materials are continuously molded in the first step, and a delaminating agent is added to the material to prevent the material from exuding into the interface between the mold and the material. However, if these materials are used for a long period of time, it will cost you money! A white cloud begins to form on the second side of the 1ldF cavity, and this cloud gradually fades from yellowish brown to blackish brown, and finally forms a layer on the gold Ili surface.

In such a state of the gold layer cavity, a large amount of I is present in the material.
Mixing IA additives causes poor mold release, and the appearance of the molded product becomes pockmarked, reducing the yield of the product. There are many places like this.

The method usually adopted is to cool the mold and polish it with a 7TVK brass metal pusher, or to remove it by CT using a soft metal powder 11-f. This method requires 5 hours and labor to clean the inside of the gold-bronze cavity individually, and it also requires polishing and scratches on the surface of the gold ffi.
An object of the present invention is to provide a thermosetting am molding material that has good delamination properties and is less likely to cause Kaneshima stain f'Lk. UtO to 1.0% by weight of a mold release agent selected from glycerin monostearate, glycerin distearate, and glycerin tristearate in the resin composition or epoxy resin composition.
The present invention relates to a thermosetting resin molding material containing 1e% mold, also known as Araseshiku, which has good mold releasability and is resistant to metal stains.

Glycerin 7% or di% used in the present invention
Although it is not necessarily clear that IL (tristearate) has a great effect on mold contamination or mold damage,
One reason is that phenolic resins are very compatible with epoxy resins and are difficult to stand out on the resin surface.

Moreover, even if it seeps onto the second side, it is likely to volatilize at the temperature of the mold.

The present invention uses phenolic fat molding material to produce epoxy*m.
Since it does not cause any trouble to the curing system of the molding material and does not require any special treatment, the total #i1 addition of mold release agent tα10 to 1.01% by mass is α101tj1%.
The smaller the lifting platform, the less the mold will become cloudy, but the delamination effect will not be fully exerted, and if it exceeds 1.01%, it will cause marks on the molded product. The 9th time that strong IL decreases. The amount of mold release agent added is α2
A range of 5 to 60 weight is more preferable.

In the case of non-invention, wax can be used in combination as a 11m agent within the range B that does not impair the effect of the present invention◎The above #
The combination ratio of liIM agent and wax is 1 quantity ratio't''2:1@
[is preferred. The wax is based on the lining and is made of natural carnauba wax, sweet and sour wax.
Available for use.

In the phenol resin composition and the epoxy resin composition, curing agents, curing accelerators, fillers, pigments, etc., which are normally used, are appropriately added.

As mentioned above, the general method of the present invention does not require any special processing method, and can be used for manufacturing methods such as uniformly sweetening with ordinary wing material, heating keel kneading extrusion, kneading, etc. The invention will be explained according to examples.

In the combined system of serine monostearate and wax, the usage ratio of ``4'' is 1 compared to I!III@211'c.

As shown in the first figure, the material JF+-ψ~■ according to the present invention is in good condition; 2MJJ, as shown in the figure, the material -■ (conventional product type) has Ill stains from around 100 sheets. It is certain that 300 pieces of enshrined will completely result in a total of Zeng 9 and rtt. Epo Life Jinobotsuta Tree 111 (CIB
Company A It ECNI Snow 9・) Ill 7Jl Nornovolac side fat (Hitachi Chemical Co., Ltd. also) Australia Lambda Itf Sol Hardening Acceleration JIJNT Shikoku Kasei Steel (17Z)
Pot (removal of dirt inside the ring surface with Metsusen tree, outside of the molded product O-optical selection [implementation and comparative ability] Novolac type 7-Kol buffing fat 43s1 Hequinamine BSS Calcium hydroxide TSS Wood powder 55 parts , glass 25
part, face # + 2 parts t mix with Henschel Mikiner for 5 minutes,
A homogeneous mixture was created by dividing this mixture into the second
Add the mold release agent shown in the table and add it to the mold for 1 minute in a 7-silicon medium, knead for 7 minutes with heated rolls at 90-120°C, cool and crush to obtain a 2-enol street resin molding material. ⇠◎ Each ingredient's insecticide fish is chopped [L76M weight%, material N[F]■, α@ of the second coating is 4o according to the present invention, and 翫0. ■It is either false or a comparison material. As a result of evaluation according to the method shown in ITS, the effect of the present invention was confirmed. However, the material of the present invention, in which the fecal dose ratio of glycerol tristearate and carnauba wax was reversed, was found to be very good.

The behavior of the mold release agent during the second AfIA was investigated using a thermobalance, and the residual amount curve during the second heating and standing is shown in the drawing.

Glycerin monostearate and carnauba wax were chosen as representatives.The volatility and the baked-in state of the mold release agent at 0.180℃ showed that glycerin monostearate was about 5 to 7 times more volatile than carnauba wax when left unattended. This phenomenon is considered to be one of the reasons why there is little cloudiness after hours. No deterioration of the release agent after high release,
Immediately after leaving it on a hot plate at 180℃ for 5Ff8, the material is molded and 1
Check the 11m effect and make a judgment, then 0 car nano (wax is 4
After some time, the mold release effect decreased and some cohesive failure of the material was observed.

[Brief explanation of the drawing]

The figure is a graph showing the residual amount curve r after being left to heat. Leaving time (H)

Claims (1)

[Claims] 1.2 One or more types of sweetener selected from glycerin monostearate, glycerin distearate, and glycerin distearate in the ethanol resin composition or epoxy resin composition. Thermosetting fat molding material◎