JP2000169648A - Vinyl chloride resin composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vinyl chloride resin composition capable of suppressing the corrosion of copper at high temperatures as a coating material for power cords. SOLUTION: This composition is obtained by compounding 100 pts.wt. of a vinyl chloride resin with 1-10 pts.wt. of a stabilizer (e.g. barium-zinc based stabilizer), 35-100 pts.wt. of a plasticizer (e.g. trioctyl trimellitate), 5-100 pts.wt. of a metal hydroxide and 0.1-10 pts.wt. of wood flour.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vinyl chloride-based power cord or the like which can prevent a chattering phenomenon in which a small explosion accompanied by a large spark is suddenly generated even when the power cord is used in a partially disconnected state. The present invention relates to a resin composition.

[0002]

2. Description of the Related Art Conventionally, power cords are widely used everywhere in ordinary households. Particularly, power cords such as dryer cords, which are severely bent, are liable to break the root of the power plug. However, in many cases, it will continue to be used unless completely disconnected, but if used as it is, a small explosion will occur with a large spark (this is called chattering phenomenon, and these are called chattering hereinafter). There are many cases where an object catches fire and leads to a fire. As a countermeasure for this, there is no alternative but to attach a bellows-like bushing or the like at the base of the plug to make it difficult to disconnect. In addition, it is difficult to truly elucidate these phenomena, and it has not been elucidated yet. However, these phenomena are said to be greatly affected by the corrosion of copper, and particularly the formation of cuprous oxide.

[0003]

SUMMARY OF THE INVENTION The present invention provides a vinyl chloride resin composition which can prevent chattering phenomenon as a power cord covering material and which can suppress copper corrosion at high temperatures. .

[0004]

According to the present invention, 1 to 10 parts by weight of a stabilizer, 35 to 100 parts by weight of a plasticizer, 5 to 100 parts by weight of a metal hydroxide, 100 parts by weight of a vinyl chloride resin, A vinyl chloride resin composition containing 0.1 to 10 parts by weight of powder and capable of preventing copper corrosion at high temperatures.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, vinyl chloride resins refer to all polymers having a group represented by CH ₂ —CHCL, such as vinyl chloride homopolymer and ethylene-vinyl chloride copolymer. Of vinyl chloride and other polymerizable monomers other than vinyl acetate, and homo- and modified copolymers such as post-chlorinated vinyl copolymers; Includes chlorinated polyolefins similar to vinyl resins. Also,
These vinyl chloride resins have a number average polymerization degree of 300 to 70.
00 is preferable, and more preferably, it has a polymerization degree of 500 to 2,000. These vinyl chloride resins can be used alone or in combination of two or more kinds as a vinyl chloride resin component in the vinyl chloride resin composition of the present invention.

[0006] The stabilizer used in the present invention is not particularly specified, but may be any one used for stabilizing ordinary PVC. For example, lead-based, barium-zinc-based, calcium-zinc-based and the like can be mentioned. The amount of stabilizer added is
It is 1 to 10 parts by weight based on 100 parts by weight of the vinyl chloride resin. If the amount of the stabilizer is less than 1 part by weight, the effect of the stabilizer on PVC is small, and if it exceeds 10 parts by weight, there is a problem of choking.

The plasticizer used in the present invention is DOP,
Phthalates such as n-DOP, DINP, DIDP, and mixed alkyl phthalates, aromatic carboxylate esters such as trioctyl trimellitate and trioctyl pyromellitate, and fatty acid dibasic esters such as DOA, DOZ and DOS Epoxies such as epoxy soybean oil and linseed oil, phosphate esters such as TCP and TOP, chlorinated paraffins, polyesters, and the like, and can be used alone or in combination of two or more. From the viewpoint, trimellitic acid ester is desirable, and the alkyl is preferably 8 or more. The amount of the plasticizer added is 35 to 100 parts by weight in view of the flexibility of the power cord. If the amount of the plasticizer is less than 35 parts by weight, the flexibility as a power cord is impaired. On the other hand, if it exceeds 100 parts by weight, the strength is remarkably reduced and bleeding or the like is liable to occur.

The metal hydroxide used in the present invention is not particularly limited as long as it is a metal hydroxide represented by aluminum hydroxide, magnesium hydroxide and the like.
Aluminum hydroxide is preferred because of the amount of water released at a relatively low temperature of 260 ° C. 5-1 as metal hydroxide
00 parts by weight is preferred. If the amount is less than 5 parts by weight, the effect of preventing copper corrosion is small, and if it exceeds 100 parts by weight, physical properties are greatly reduced, which is not preferable.

The wood flour used in the present invention is not particularly limited, but preferably has as small a particle diameter as possible, particularly preferably 200 μm or less. In particular, a titanium-based surface-treated product is preferable for a white-colored product. The addition amount is preferably from 0.1 to 10 parts by weight. If the amount is less than 0.1 part by weight, the effect of preventing copper corrosion is small, and if it exceeds 10 parts by weight, the physical properties are extremely lowered, which is not preferable. Preferably it is 0.3 to 1 part by weight.

The vinyl chloride resin composition of the present invention may further contain a crosslinking aid such as a lubricant, an inorganic filler, a chelator, a processing aid, and a coloring agent, if necessary.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples.

The components blended in the following examples and comparative examples are as follows. -Vinyl chloride resin: PVC (manufactured by Tosoh Corporation; average polymerization degree = 1300)-Tribasic lead sulfate (manufactured by Mizusawa Chemical Co., Ltd.)-Plasticizer: TOTM (trimellitic ester: Dainippon Ink Co., Ltd.)・ Aluminum hydroxide (Showa Denko) ・ Magnesium hydroxide (Kyowa Chemical) ・ Wood flour (particle diameter 100 μm; surface treatment with titanium (10% by weight))

<Examples 1 to 5 and Comparative Examples 1 to 7> Using the above-mentioned raw materials, the composition shown in Tables 1 and 2 (numbers are parts by weight)
Was kneaded with a Banbury mixer, and the kneaded material was passed through a roll to form a thin sheet. It was pressed to form a sheet-like sample having a predetermined thickness.

Next, the following items were evaluated.
The evaluation items and evaluation conditions are shown below. (1) Tensile strength: in accordance with JIS K6723 (2) Copper corrosion resistance: A copper foil (0.2 μm) and an evaluation material are stuck together and left at 200 ° C. for 30 minutes, and the color difference before and after the treatment of the copper foil is measured with a color difference meter. Measure to find Delta E. (3) Flexibility: Hardness was measured according to JIS K6301. Symbol and judgment Hardness less than 90: Hardness 90 or more: × These results are shown in Tables 1 and 2.

[0014]

[Table 1]

[0015]

[Table 2]

[0016]

According to the vinyl chloride resin composition of the present invention, even if the power cord is bent and used as it is with a partially broken wire, the corrosion of copper at high temperatures is suppressed and the chattering phenomenon does not occur. Was.

Claims (1)

[Claims] [Claim 1] 100 parts by weight of a vinyl chloride resin,
A vinyl chloride resin composition comprising 1 to 10 parts by weight of a stabilizer, 35 to 100 parts by weight of a plasticizer, 5 to 100 parts by weight of a metal hydroxide, and 0.1 to 10 parts by weight of wood flour.