JPS58120668A - Production of thermosetting resin material - Google Patents

Abstract

PURPOSE:A thermosetting resin is mixed with additives under melting, then the mixture is cooled down to a specific temperature and mixed again under melting by means of a high power mixer to produce the titled material with additives dispersed uniformly. CONSTITUTION:A thermosetting resin such as phenolic or epoxy resin is mixed under melting with a variety of additives such as a curing agent, catalyst, releasing agent, colorant, or filler and they are cooled down to a temperature at which it becomes crushable. Then, the mixture is kneaded under melting by means of a mixer with a higher mixing power. On the remixing, extremely powerful mixing force act on the material, immediately after cooled material is fed to break additives with large sizes or high aggregation to effect uniform mixing. More than 50wt% of the melt mixture to be remixed is preferably more than half of size of the minimum slit of the mixer.

Description

DETAILED DESCRIPTION OF THE INVENTION The invention relates to a method for producing a thermosetting W wire material. Heat-waveable AD resins such as phenol II resins, polyester side fats, and epoxy side fats can be used as curing agents, catalysts, and mold release agents. It is used as a 6% color palliator, a 6% bath-melt additive and a bath melting material, a molding material, a paint material, an injection material, and a θ-resin material. Ego, mixing roll as a manufacturing method of clrL et al. Needa.

However, the most popular method is to melt the fat and mix it uniformly with the additives at the same time as extrusion, Hensiel mixer, etc., in addition to heat transfer. , Some of the agents have a melting point that is very large in size.
You can also add items that are difficult to disperse evenly, such as sweet potato dumplings and kenka dumplings. xu 'Was Reduce the polarization time and reduce the temperature. In addition, the shear mixing force of the mixer 11- strengthens the rounding r'tt + narrowing the interval, etc.'')j method is adopted,
In addition to being opaque, there are disadvantages such as the reaction of the alkalinizing street oil progressing and gelation when it is completely mixed, and there is a limit to uniform dispersion. For additives with large dimensions, there is a method of curing and pulverizing them, but this often causes problems such as dampness and oxidation.

The rice worker who took revenge on the 5th problem of the construction industry.

In addition to the first mixing step of melt-mixing the resin and additives in a t-bath,
Shattered town*! By employing the first mixing phase in which the materials melted and mixed under direct gravity are cooled and then melted and mixed again in a mixer with a strong mixing can, more uniformly dispersed materials can be obtained. Understood, in other words, extremely strong mixing force is obtained after the trap injection FIL that remixes the cooled materials, and large additives and vertical additives are destroyed.
For the sake of it! ◇The second joining process &i can be repeated depending on the purpose, and the effect will be even greater.〇The present invention can mix the n-th material group evenly after cooling. In order to advance the dispersion of the enhancer using spreading force, it is necessary to cool the material before it is mixed with P+ to a temperature at which it can be pulverized. In addition, if the material to be remixed is fine, the breaking force will not effectively make it fine, so it is preferable that the material is 50% or more or the size is 1 part 2 or more of the minimum gap of the mixer. .

Invention Q) As the thermosetting resin, 2-enol resin, polyester W resin, epoxy flank, etc. are used, and as n% filler material, α-curing agent, acupuncture needle, shank type, shield color wound, koten Contains 1 material temple
It will be done.

Note that it is only necessary that the thermosetting side wire be in a bath-molten state when melt-mixing is performed.

This will be explained in detail below using an example of contamination.

(Husband Inu-1) Phenol 7 Holac 9i fat (softening point 90℃) 1ooi
! I5. Hexamethylenetetramine 15.

Slaked lime 2hL 20 parts, wood flour 80 parts, stearin #
Composition consisting of 2 cities and 2 cities of spirit black -,
ii! Diameter 10 inches, MO-ru 80℃ 20rpm * Shun T
: x-ru 140℃ 15rpm% 0 After mixing for 2 minutes with a 4-layer mixing roll, cooled to 50℃, 2a+
Crush it so that 70% of it is m-square or larger, and
? I-Additional 1 minute re-mixing of the materials and similar composition 11-2 minutes of mixing, cooling to 30°C, 211IO1
Grind with dimensions that are 75% below the corner, then mix again for 1 minute. Material syt: f # 0 10" Composition of image t Mix for 5 minutes Mixed material HCk Obtained composition of 01 town t Mix for 6 minutes I got the material Dr.

Materials C and D are materials according to the conventional manufacturing method. Charpy test pieces (JIS K 69tt) were molded by transfer 1 molding at 170°C for 3 minutes, and molded Ifi! 1
1:113＠The occurrence of internal voids ('[l1mmJ] above) By the way, material A has no voids, while material B has 2 voids, material C″t′ has 18 voids, and material D″ A void of t"U311 is generated, and a void of 90 this 15 is generated near the bare surface of the bottom-shaped product, making it a hidden gem.
It is not good to use 9-heki as it causes pinholes at the time of k. In other words, is 9-heki used on the main method side? Hexamine contains 6% of hexamine with a diameter of α1m or more, and if such large hexamine remains in the material, it causes decomposition gas or voids. 1 k void will not occur in recruitment (
90 (Example 2) Cresol Novo 2-type epoxy 1IJffi (epoxy weight 1220. Softening point 85°C) 100&S, 7-layer tetrahydroditalic anhydride 60m, 2-methylimidazole 1, silica powder 450 parts.

Stearin #i! A composition consisting of 1 part of 2 s* carbon black was heated on a front roll of 5o C at 20 rp with a pole of 10 inches.
15r roll at 80°C (pole spacing 4WU)
After sweetening 111111 for 3 minutes at a and 7, cool it for 30'CK and add 21L to the next material group! The mixture was crushed so that the proportion of 1 square mesh or more was 70%, and the mixture was further mixed for 5 minutes to obtain the material. Similar composition t was mixed for 6 minutes to obtain material Bt F-O, then transfer molded at 170'C for 3 minutes curing to %1
001LLIIφ2IuIt was formed into a disk 1e. A normal test piece 1 could be obtained using material A. Ko-n
However, with material B, the mold release property was rapid and two L scratches occurred on the molded skin. 1 It was observed that white undispersed substances were mixed in the skin material B.The curing material tetrahydro anhydride 7 tal was α5~(L6 thickness, 211 parts, 1 square or larger size was 7
This is because the conventional manufacturing method causes poor dispersion due to the fact that it is in the form of flakes of 0% or more and has a low melting point of 101°C. Since acid anhydrides are susceptible to V-ring opening due to moisture absorption, it is not preferable to pulverize them in advance, and the production method of the present invention makes it possible to produce materials with good quality.

Claims (1)

[Claims] 1. The first step of mixing the thermosetting resin and additive 1 in a bath, and the grinding of the molten Pg mixture in the first step. After cooling to a temperature of 1, use a mixer with strong mixing power again to 11! 7. A method for producing a thermosetting rubber material, comprising a second mixing step sr for melting and mixing. 2. 50X1:5 or more of the melt mixing 7II of the #1ilR mixing phase in the #1ilR mixing phase can be achieved with a dimension of 1/2 or more of the minimum volume of the mixer l'Fnt Search range 1
Method for producing thermosetting fat-balanced material described in Section @