JPS62158733A - Resin sheet - Google Patents

Abstract

PURPOSE:To obtain a flexible resin sheet excellent in antistatic property, etc. by mixing a vinyl chloride resin with an acrylonitrile/butadiene copolymer and a phthalate plasticizer having an ether bond in each alkyl chain and molding the mixture. CONSTITUTION:30-80wt% vinyl chloride resin is mixed with 70-20wt% acrylonitrile/butadiene copolymer. 100pts.wt. obtained blend resin is mixed with 10-100pts.wt. phthalate plasticizer having an ether bond in each alkyl chain, and the resulting mixture is molded to form the purpose colorable antistatic resin sheet of a volume resistivity <=10<8>OMEGA-cm. As the phthalate plasticizer, a plasticizer of the formula (wherein m1 and m2 are each 2-4, n1 and n2 are each 1-4 and R1 and R2 are each a 3-15 C alkyl) is desirable and di(ethylene glycol monobutyl ether) phthalate can be cited as an example.

Description

[Detailed description of the invention] 6. 1. A detailed description of the invention [Field of application of Togami] The present invention relates to a new m fat sheet, which is flexible, has excellent #formation prevention properties, and has fcN color. Or, it relates to a resin sheet capable of 71 colors of ciT.

[Conventional technology and problems]

Conventionally, flexible and colorable or layer-colored protective top sheets are made of soft resin materials such as vinyl chloride resin, ethylene-vinyl acetate resin, polyurethane resin, etc., which contain plasticizers, or laminates containing fatty amines. Sheets are known that are made by adding so-called antistatic agents such as nitrogen compounds, sulfonic acid esters, hydronic acid esters, polyglycols, large alcohols, etc. or derivatives thereof, and forming the following materials by extrusion molding, calender molding, etc. .

However, sheets obtained by adding a small amount of these antistatic agents, etc. often have insufficient antistatic effect, and in order to exhibit the antistatic effect, a large amount of antistatic agent 4 is added.
In addition to inferior physical properties, coloring properties, and appearance, the sheets to which V has been added are subject to so-called delete and plume problems in which antistatic agents, etc. added to the sheet surface ooze out under conditions of high tin content and high humidity or during long-term use. This phenomenon occurs, and in practical use, there are many rows of support 14t, and in general, there is no sufficiently good anti-impact sheet that can be layered or colored and has a volume resistivity of 1080m or less, and there are many problems in various fields. The provision of such services is eagerly awaited.

[Means for solving problems]

The present invention consists of 100 parts by weight of a vinyl chloride-based resin with a 50-80 weight ratio and an acrylonitrile-butadiene copolymer of 70-20 weight parts, and a phthalate ester material having an ether bond in the alkyl term. It is a flexible sheet with a body weight resistivity of 108 Ω-CM or less, which is made from a town fat material with a 10-100 heavily fractured part.

The vinyl-cured fat used in the present invention is not particularly limited, and in addition to polyvinyl chloride, vinyl chloride is usually used in
If it is a m-shield containing more than ψ coefficient, it is vinyl chloride grafted with acetic acid havinyl, ethylene, teropyrene, α-olefin, copolymer with alkyl vinyl ester, etc., ethene-vinyl acetate, polyurethane fat, polyurethane, etc. System [1
Is 1ff enough of a purpose? reach

As the acriminitrile-butadiene copolymer, nitrile rubber or partially crosslinked nitrile rubber can be used, and the composition and molecular weight are not particularly limited.

In the side combination of vinyl chloride street grease and acrylonitrile-butadiene copolymer, the weight ratio of vinyl chloride shield/acrylonitrile loosetadiene copolymer is 30-80/20-
The range is 70. If the acryl nitrile-butadiene copolymer is less than 20% by weight, the desired electrical resistance reduction effect will not be obtained in the resulting sheet, and the resulting sheet will not be able to achieve the desired electrical resistance reduction effect.
J I:I 2) If the content of the lylubutazoene copolymer exceeds 80, the formability of the sheet at the time of storage will decrease, and a sheet with a good outside a will not be obtained, and the tensile strength and tear strength of the sheet will decrease. The deterioration of the physical properties becomes large, making it impractical for practical use.

In the present invention, the ether bond e! in the alkyl term! The phthalate ester plasticizer to be used has the general formula (where ml +
m2 is an integer of 2 to 40, nl l n2B 1 to 4 training R4+ R2 represents an alkyl group having 3 to 15 carbon atoms. ) Preferred are plasticizers such as zo(ethylene glycol monobutyl ether) phthalate and zo(ethylene glycol monobutyl ether) phthalate. There is 1100 etc.

The amount of the plasticizer relative to the bright fat component is 100% of the bright fat component.
It is in the range of 10-100 overlapped parts for the overlapped part. 10
If less than 100 parts by weight, the desired effect of reducing the electrical resistance of the sheet cannot be obtained, and if more than 10 parts by weight is added, no effect in reducing the electrical resistance will be recognized.

In addition to the phthalate plasticizer having an ether bond in the alkyl chain, the usual DOP and DHP.

DIDP, l-phthal modified ester alkyl phthalate, epoxidized soybean oil polyester, etc., can be used as an O-T plastic agent fc commonly used in vinyl chloride.

In addition, there are no particular restrictions on the stabilizers, antioxidants, lubricants, anti-corrosive agents, additives and coloring agents normally used in vinyl chloride, etc., but they are suitable! It is desirable that d' be added in order to achieve the object of the present invention.

The four types obtained in this way are sheetoni obtained from mastic acid;
Electrical resistance is reduced without adding any commonly used black or dark color fillers such as Carmen Black, so it is possible to make sheets with light or bright colors, and the sheet surface can be coated with Since it does not contain antistatic agents that may cause leaching due to deletion or plume phenomena, it can be used as a flexible sheet with a good appearance for antistatic, electrical, electrical, and industrial components. Widely applicable.

In addition to being used alone, the sheet of the present invention can also be effectively used in an integrated manner with a material such as a cylindrical material, im, metal, etc. by adhesion, a molten layer, or the like.

[Implementation row]

Practical row 1-5 Comparative example 1-4 According to the formulation Al1 shown in the table, 20 Yu of money was mixed in a 751 Henschel mixer (Mitsui Miike Manufacturing Co., Ltd. a), and then the mixture was mixed with a 901'm single shaft. Wet bulb extrusion using an extruder (Ikegai Tekko Co., Ltd.), pelletizing dk, 40 m/m
jL [bfsP output machine (Toshiba Machine Co., Ltd.) width'1Q
anH! A green sheet of i'l m/m was extruded.

The appearance of the obtained sheet was visually evaluated, a test piece was cut out from the sheet, physical properties were measured, electrical resistance was measured, antistatic effect was measured, and stain adhesion was measured using a dirt chamber.
The sample was placed in a constant temperature and humidity chamber at 40° C. and 95% humidity for 48 hours, then blown out and visually observed for the presence or absence of a deleter.

Materials (11 vinyl chloride resin 1 vinyl chloride 5H-250
(',!Kikagaku Kogyo Co., Ltd. 12> Acrylonitrile JSRN201 (Japan Synthetic Rubber Co., Ltd.)-butadiene copolymer (partially crosslinked) (3) Zo(Ethylene glycan acid 〇-110
0 (Shin Nippon Coal Motuptil Rika Co., Ltd.) Ether) Phthalate (4) DOP Tanezu Dop (4jF Mizu Kagaku Kogyo Co., Ltd. (G-2-ethylhexyl phthalate)) (5) Antistatic agent Ta205 (Matsumoto Yushi (KK)
(Nonio-based)) +61 Stabilizer 5z-70 (dada Kako Co., Ltd.)
(Barium-zinc composite stabilizer)) (7) M agent Hoechstwax OP (
Hoechst Japan C Co., Ltd.) (Montanic acid wax li(
8) Color agent MX4510 green (Dainichiseika Kagyo Co., Ltd.) Measurement method (1) Tensile strength Measured according to JIS K6301, however, the test piece was
) Tensile elongation (3) Hardness (However, the test piece is measured by cutting it out from the sheet and stacking it to create a 10-thick sample using a 50-ton hydraulic press (f:) (4) Volume resistivity 70 m /m length 7; 5
Apply Ichitite (Dokura Kasei Co., Ltd. JAD-5001) to both ends of a 20 m/m wide x 2 m/m thick test piece, place it in a constant temperature and humidity room with FE20G and 60% humidity, and heat it for 2 hours.
After passing for 4 hours, the resistance was measured with a multimeter (manufactured by Takeda Ume@ Co., Ltd., TR-6856).

The volume resistivity was calculated using the following formula.

xW R'V=RX- However, Rv: Volume resistivity (Ω-mouth) R: Resistance i [(Ω) l: Inter-electrode distance (cIIt) S: Width (rinsing) W: Thickness (reserves) (51 electrification Cut out the corner of sample 101 with anti-dust and R in the dirt chun layered bar (41!Ki, made by Karisakusho), carbon (Xerox toner $914)
/20)! After using Mt and blowing at an opening of 60° for 5 minutes, one layer of carbon was added, and the dust adhesion property was shown.

〔Effect of the invention〕

The fat sheet of the present invention has bright color, flexibility, excellent anti-magnetic properties, and low electrical resistance f) =
d get wet.

Claims (1)

[Claims] Molded from 100 parts by weight of a resin consisting of 30-80% by weight of vinyl chloride resin and 70-20% by weight of acrylonitrile-butadiene copolymer and 10-100 parts by weight of a phthalate ester plasticizer having an ether bond in the alkyl chain. A flexible resin sheet with a volume resistivity of 10^8 Ω-cm.