JPS58132043A - Non-expanded antistatic synthetic resin product - Google Patents

Abstract

PURPOSE:To provide the titled non-expanded product, which is little charged and can be used as an electrically conductive resin material, by incorporating a polyhydroxy compd. having an ethylene oxide content not lower than a specified amount and carbon black in a thermoplastic resin. CONSTITUTION:A non-expanded antistatic synthetic resin product obtd. by incorporating a polyhydroxy compd. (B) having an ethylene oxide content of 15% or above and carbon black (C) in a thermoplastic resin (A) such as PE or PVC in a proportion of 10-70pts.wt. of the combined amount of components B and C per 100pts.wt. component A. This product can be applied to materials which should be non-electrostatic, such as electrostatic recording paper, spinning roll etc., and is useful as a package for semiconductor devices such as IC or as an electrically conductive resin material. A resin obtd. by incorporating 10-200pts. wt. components B and C in 100pts.wt. thermosetting resin as component A in place of the thermoplastic resin can be used for the same purpose.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a non-foamed material made of a non-static synthetic resin that prevents static electricity.

Non-foamed synthetic resins have traditionally been produced by injection molding, extrusion molding,
Molded by f-less molding etc., various instrument panels and building materials for automobiles.

Widely used as other industrial materials.

In addition to these molded products, they are used in a wide range of applications such as chemical fibers, chemical papers, nonwoven fabrics, and flexible films. In this way, non-foamed synthetic resin materials have grown into essential materials for industry and daily life in modern society, but all non-foamed synthetic resin materials have a common characteristic of being electrostatically charged. There is a problem with cypress trees. For example, when processing a molded synthetic resin non-foamed body as an automobile part,
There was a problem in that the friction during processing caused electrical charge and dust in the air to adhere to the surface, and when the surface was subsequently painted, uneven coating of the steel occurred. In addition, human bodies are charged with electricity due to clothing made of chemical fibers, and therefore, whenever we touch metal, the accumulated static electricity is discharged, and we often experience unpleasant electrostatic shock. The various types of melting caused by electrification as described above have caused serious harm that cannot be ignored from a technical or social perspective, as non-foamed synthetic resin products are extremely widely used. Therefore, there was a strong demand for a non-foamed synthetic resin material that prevents static electricity.

The present invention has been made in view of the above circumstances.

The object of the present invention is to provide a non-foamed material made of a non-static synthetic resin that can eliminate various problems caused by electrostatic charging.

That is, the first invention of the present application is characterized in that a polyhydroxy compound having an ethylene oxide content of 151 or more and carbon black are both contained in a total of 10 to 200 parts by weight based on 100 parts by weight of the thermoplastic resin. It is a non-foamed body made of non-static synthetic resin.

Further, the @2 invention of the present application is a thermosetting resin i! A non-foamed material of a non-static synthetic resin characterized by containing a total of 10 to 200 parts by weight of a 4-lyhydroxy compound with an ethylene oxide content of 151s or more and carbon black per 100 parts by weight. .

As the thermoplastic resin in the present invention @1.

gVA tree Jll (ethylene-vinyl acetate copolymer resin)
.

All currently used thermoplastic resins such as polyethylene resin, acrylic resin, and vinyl chloride resin can be used. Further, as the thermosetting resin in the second invention of the present application, AB8 resin (acrylonitrile-butadiene-styrene copolymer resin), /! All currently used thermosetting resins such as J ester resin, polyurethane resin, and polyurethane resin can be used.

The polyhydroxy compound having an ethylene oxide content of 15% or more and carbon black in the present invention function as an antistatic agent. The present invention eliminates the charging property of the synthetic resin non-foamed material through these antistatic effects.

For the two types of antistatic agents in Koki, if the combined amount of both is less than 10 parts by weight per 100 parts by weight of the thermoplastic resin or thermosetting resin, a sufficient effect cannot be obtained. If the amount of carbon black added is too large, the physical properties will deteriorate, such as weakening of the strength as the amount of carbon black added increases, and the antistatic effect will also reach a plateau, making it impossible to obtain a large effect commensurate with the amount added.

Among the antistatic agents in Joki Nifa, @, carbon black is one that has been used conventionally.

The addition of casen black has the drawback of causing the above-mentioned deterioration of physical properties (1), and the amount added must be substantially limited by this problem.

The present invention uses a polyhydroxy compound having a C=ethylene oxytide content of 15 or more as an antistatic agent in combination with carbon black, thereby reducing the amount of carbon black added and preventing deterioration of physical properties. This makes it possible to obtain a large antistatic effect. In this case, the addition ratio between these two types of antistatic agents is: bori hydroxy compound dicarmen black=l:9 to 9:1
It is desirable that the Thereby, the amount of carbon black added necessary to obtain the same antistatic effect can be suppressed to about 1/2 to 2/3 of that in the case of carbon black alone, and deterioration of physical properties can be prevented.

In the present invention, it is desirable to use a polyhydroxy compound with an ethylene oxide content of 5 osu or more in order to obtain a more sufficient effect. For example, polyoxyvethylene derobylene glycol is a polyhydroxy compound with an ethylene oxide content of 75, and is a preferred polyhydroxy compound in the present invention.

In addition to the above two types of antistatic agents, general formulas R, N
By using X (R is an alkyl group or an aryl group) as a third antistatic agent, an effect greater than 11° can be obtained. As the quaternary ammonium salt, a cationic quaternary ammonium salt ([6*HssN(CHs)s)Cno04; product name New Niregan Jin, New Niregan AI] manufactured by NOF Corporation is suitable.

The non-foamed material of the non-static synthetic resin according to the present invention is as follows.

As shown in the results of the examples described later, there is almost no chargeability to the extent that the amount of charge cannot be detected with a normal static electricity measuring device, so the problems caused by charging that were associated with non-foamed synthetic resin products are almost completely eliminated! S can be erased.

In addition, since it has almost no chargeability, it can be particularly applied to applications requiring non-chargeability, such as electrostatic recording paper, spinning rolls, etc., to obtain remarkable effects. Fourth,
As shown in the results of the following examples, the non-foamed non-electrostatic synthetic resin and resin according to the present invention can have a specific resistance value on the order of 101 to 10@, so it is suitable for use in semiconductor devices such as XC. It is also possible to use the so-called 41 in fields where even stricter non-static properties are required, such as in the case of cages, or as a static resin material.

The present invention will be explained in detail below.

Example 1 - High-density polyethylene resin 100 parts by weight (Mitsubishi Yuka JY-20) - Polyoxyethylene propylene glycol 10 parts by weight (3-tubular polyester 4-liol bimolecular with ethylene oxide content of 75%, 113 parts by weight, 0oo) ・Carbon black 10 parts Nip Seal VN 20 parts (silica-based filler) The raw material having the above composition was mixed and kneaded on a roll at 120'C for 30 minutes to form a sheet with a thickness of IU. , 150uX1
The four sheets were filled into a 50u x 3M mold. This was heated at 140°C for 15 minutes while pressurized from above and below with a pressure of 50 to 9/d, then the heated steam in the press was replaced with water and cooled for 2 minutes, and the mold temperature was 80°C.
It was removed from the mold.

Regarding the non-foamed molded product of high-density polyethylene resin obtained in this way, the initial charging voltage and its half-life were first examined using an electrostatic meter, and it was found to be below the measurement limit and undetectable. Next;.

When the electrical resistance was measured, the specific resistance was 3 x 10'Ω.
・The value of ■ was obtained.

Example 2 - High density polyethylene resin 1001i parts (Mitsubishi Yuka JY-20> - Polyoxyethylene propylene glycol 20 parts by weight - Carbon black 20 parts by weight - Nip Seal VN3 30 parts by weight (silica filler) Consisting of the above composition Using the raw materials, the same procedure as in Example 1 was carried out to obtain a non-foamed molded body of high density polyethylene resin.

The electrical resistance of this molded body was measured and was 2 x 10'Ω.
・The specific resistance value of the scratch was obtained.

Example 3 100 parts by weight of φ polystyrene resin, 10 parts by weight of polyoxyethylene propylene glycol, 15 parts by weight of carbon black, 5 parts by weight of Nip Seal VN3 (silica filler) Using raw materials with the above composition, heating conditions 170"C x 15 minutes,
The same procedure as in Example 1 was carried out with the demolding temperature being 60°C.

The electrical resistance of the obtained non-foamed molded I-restyrene resin was measured, and a specific resistance value of 1.0×10'Ω·α was obtained.

Example 4 - AB8 resin io ox parts - Polyoxyethylene propylene glycol 20 parts by weight
20 parts by weight of carbon black, 5 parts by weight of Nip Seal VN3 Using the raw materials of the above composition, non-foaming molding of %AB8 resin was carried out in the same manner as in Example 1 under heating conditions of 180°C x 15 minutes and demolding temperature of 60°C. I got a body.

The specific resistance value of this molded body was 1.0×10′Ω·min.

Although the above examples were processed into molded products, similar results can be obtained when the molded products are processed into fibers, films, and the like.

As described in detail above, according to the present invention, it is possible to provide a non-foamed material of a non-static resin which has almost no chargeability and can also be used as a tetra-electrostatic resin material.

Patent attorney Suzue Takehiko1 Procedural amendment @ゎ57,3・□15B Commissioner of the Japan Patent Office Shima 1) Haruki Tono1, Indication of case Special Peng 11i57-13776 No.2, Name of excavation Uncharged Non-foamed synthetic resin 3, relationship with the case of the person making the amendment Patent applicant (342) Toyo S Misaka Kogyo Co., Ltd. 4, attorney 7, content of amendment + 1) The name of the invention in the specification, the application This has been corrected to "non-foamed material made of non-static synthetic resin" to match the above.

Claims (1)

[Claims] 11) A 4-lyhydroxy compound having an ethylene oxide content of 15 or more and carbon black are contained in a total of 10 to 70 parts by weight based on 100 parts by weight of the thermoplastic synthetic resin. A non-foamed material made of non-static synthetic resin. 12) A non-static product characterized by containing a total of 10 to 200 parts by weight of a 4-lyhydroxy compound having an ethylene oxide content of 15 or more and carbon black, based on 100 parts by weight of the thermosetting resin. Non-foamed synthetic resin.