JPH115881A - Vinyl chloride-based resin composition - Google Patents
Vinyl chloride-based resin compositionInfo
- Publication number
- JPH115881A JPH115881A JP16252397A JP16252397A JPH115881A JP H115881 A JPH115881 A JP H115881A JP 16252397 A JP16252397 A JP 16252397A JP 16252397 A JP16252397 A JP 16252397A JP H115881 A JPH115881 A JP H115881A
- Authority
- JP
- Japan
- Prior art keywords
- vinyl chloride
- based resin
- pvc
- potassium titanate
- resin composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、塩化ビニル系樹脂
(以下、PVCという)からなる樹脂組成物に関し、詳
しくは耐衝撃性に優れるPVC組成物に関する。The present invention relates to a resin composition comprising a vinyl chloride resin (hereinafter, referred to as PVC), and more particularly to a PVC composition having excellent impact resistance.
【0002】[0002]
【従来の技術】従来より、PVC、及び、塩素化塩化ビ
ニル系樹脂(以下、CPVCという)は安価であり、ま
た、耐衝撃性、耐熱性等の物理的性質、耐溶剤性、耐酸
性等の化学的性質に優れているため、押出成形や射出成
形により種々の形状に成形加工され、建材、管材等の幅
広い用途に使用されている。しかしながら、PVC、C
PVCは分解温度と成形温度とが近接している等の理由
から、PVC、CPVCのみを押出成形等しても、良好
な成形品を得ることができない。このため、PVC、C
PVCを押出成形等する際には、安定剤や溶剤等の各種
添加剤が配合される。2. Description of the Related Art Conventionally, PVC and chlorinated vinyl chloride resins (hereinafter referred to as CPVC) are inexpensive, and have physical properties such as impact resistance and heat resistance, solvent resistance, acid resistance and the like. Because of its excellent chemical properties, it is molded into various shapes by extrusion or injection molding, and is used in a wide range of applications such as building materials and pipe materials. However, PVC, C
Due to the reason that the decomposition temperature and the molding temperature of PVC are close to each other, even if only PVC or CPVC is extruded or the like, a good molded product cannot be obtained. For this reason, PVC, C
When extruding PVC or the like, various additives such as a stabilizer and a solvent are blended.
【0003】また、CPVCは、一般にPVCを後塩素
化して作られる。CPVCはPVCの長所といわれる難
燃性、耐薬品性の特性を残し、熱変形温度がPVCより
20〜40℃も高く、PVCの欠点である耐熱性が改良
されている。[0003] CPVC is generally produced by post-chlorination of PVC. CPVC retains properties of flame retardancy and chemical resistance, which are said to be advantages of PVC, and has a heat deformation temperature higher by 20 to 40 ° C. than PVC, and has improved heat resistance, which is a drawback of PVC.
【0004】一般に、PVC、及び、CPVCの耐衝撃
性を向上する手法としては、衝撃改質剤と呼ばれるゴム
成分を添加する事が知られている。衝撃改質剤の種類と
しては、例えば、メチルメタクリレート−ブタジエン−
スチレンの三元共重合体(以下、MBSという)、アク
リル系(主にブチルアクリレート−メチルメタクリレー
ト共重合体)、塩素化ポリエチレン等が挙げられる。In general, as a technique for improving the impact resistance of PVC and CPVC, it is known to add a rubber component called an impact modifier. As the type of the impact modifier, for example, methyl methacrylate-butadiene-
Examples include styrene terpolymers (hereinafter, referred to as MBS), acrylics (mainly butyl acrylate-methyl methacrylate copolymer), chlorinated polyethylene, and the like.
【0005】上記衝撃改質剤を添加する事により、PV
Cの場合、衝撃強度は向上するが、それと共に引張強度
が低下するという問題点があった。そのため、上水道管
等の圧力管に使われた場合に、引張強度の低下により常
用圧力に耐えられず破壊する可能性があった。また、C
PVCの場合、衝撃強度は向上するが、CPVCが本来
持っている耐熱性が低下するという問題点があった。[0005] By adding the above impact modifier, PV
In the case of C, there was a problem that the impact strength was improved, but the tensile strength was also reduced. Therefore, when used in a pressure pipe such as a water pipe, there is a possibility that the pipe cannot be withstand a normal pressure and is broken due to a decrease in tensile strength. Also, C
In the case of PVC, the impact strength is improved, but there is a problem that the heat resistance inherent in CPVC is reduced.
【0006】[0006]
【発明が解決しようとする課題】本発明は、上記問題点
を解決するものであって、耐衝撃性が良好であり、PV
Cにおいては引張強度の低下がなく、CPVCにおいて
は耐熱性の低下のない、PVC組成物を提供することに
ある。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems and has a good impact resistance and a high PV resistance.
An object of the present invention is to provide a PVC composition having no decrease in tensile strength in C and no decrease in heat resistance in CPVC.
【0007】[0007]
【課題を解決するための手段】本発明はPVC、また
は、CPVC100重量部にチタン酸カリウムウイスカ
ーが1〜10重量部添加されていることを特徴とする。The present invention is characterized in that 100 parts by weight of PVC or CPVC is added with 1 to 10 parts by weight of potassium titanate whisker.
【0008】上記PVCとしては、単独重合体に限ら
ず、他の単量体との共重合体であっても良い。他の単量
体としては、例えば、エチレン、プロピレン等のオレフ
ィン類;酢酸ビニル等のビニル単量体類;2−エチルヘ
キシルメタクリレ−ト、ブチルメタクリレ−ト等のアク
リル系単量体類が用いられる。上記PVCの製造方法は
特には限定されず、公知の方法、例えば、懸濁重合、乳
化重合、塊状重合等が用いられる。[0008] The PVC is not limited to a homopolymer, but may be a copolymer with another monomer. Examples of other monomers include olefins such as ethylene and propylene; vinyl monomers such as vinyl acetate; and acrylic monomers such as 2-ethylhexyl methacrylate and butyl methacrylate. Used. The method for producing the PVC is not particularly limited, and a known method such as suspension polymerization, emulsion polymerization, or bulk polymerization is used.
【0009】上記CPVCとしては、PVCを後塩素化
して得られるが、後塩素化の方法は特には限定されず、
公知の方法、例えば、気相で行う方法、水相で行う方
法、有機溶媒中で行う方法等がある。The above-mentioned CPVC is obtained by post-chlorination of PVC, but the method of post-chlorination is not particularly limited.
There are known methods, for example, a method performed in a gas phase, a method performed in an aqueous phase, a method performed in an organic solvent, and the like.
【0010】本発明で用いられるチタン酸カリウムウイ
スカーとしては、例えば、8チタン酸カリウムウイスカ
ー(化学式 K2 O・8TiO2 )、6チタン酸カリウ
ムウイスカー(化学式 K2 O・6TiO2 )等が挙げ
られる。上記チタン酸カリウムウイスカーは、いずれも
平均繊維長10〜20μm、平均繊維径0.3〜0.6
μmの白色針状結晶物である。引張強度は約7GPa、
引張弾性率は約280GPaである。As the potassium titanate whisker used in the present invention, for example, potassium octa titanate whisker (chemical formula K 2 O · 8TiO 2 ), potassium hexatitanate whisker (chemical formula K 2 O · 6TiO 2 ) and the like can be mentioned. . Each of the potassium titanate whiskers has an average fiber length of 10 to 20 μm and an average fiber diameter of 0.3 to 0.6.
It is a white needle-like crystal of μm. Tensile strength is about 7 GPa,
The tensile modulus is about 280 GPa.
【0011】上記チタン酸カリウムウイスカーの添加量
は、PVC、または、CPVC100重量部に対して1
〜10重量部に制限される。上記チタン酸カリウムウイ
スカーの添加量が、1重量部未満では耐衝撃性の向上効
果が得られず、10重量部を超えると成形時に過度の発
熱により樹脂が熱分解(ヤケ)を起こすからである。The amount of the potassium titanate whisker is 1 to 100 parts by weight of PVC or CPVC.
To 10 parts by weight. If the amount of the potassium titanate whisker is less than 1 part by weight, the effect of improving the impact resistance is not obtained. .
【0012】本発明のPVC組成物には、更に成形性、
熱安定性等を向上させるために、一般に使用される鉛系
安定剤、ジブチル錫マレ−ト、ジブチル錫メルカプト等
の錫系安定剤、金属石鹸、脂肪酸エステル系の滑剤、炭
酸カルシウム、紫外線吸収剤、酸化チタンの顔料、及び
染料等が併用されてもよい。The PVC composition of the present invention further comprises moldability,
In order to improve thermal stability, etc., commonly used lead stabilizers, tin stabilizers such as dibutyltin maleate and dibutyltin mercapto, metal soaps, fatty acid ester lubricants, calcium carbonate, ultraviolet absorbers , Titanium oxide pigments, dyes and the like may be used in combination.
【0013】本発明のPVC組成物は、押出成形法、射
出成形法にて成形可能であるが、押出成形法がより適し
ている。本発明のPVC組成物を押出成形するには、例
えば、組成物をス−パ−ミキサ−で均一に分散した混合
物、またはこの混合物を押出機に供給しペレタイザ−で
切断して得られたペレットを押出成形すればよい。The PVC composition of the present invention can be molded by an extrusion molding method or an injection molding method, but the extrusion molding method is more suitable. In order to extrude the PVC composition of the present invention, for example, a mixture obtained by uniformly dispersing the composition with a super mixer, or a pellet obtained by feeding this mixture to an extruder and cutting it with a pelletizer May be extruded.
【0014】[0014]
【発明の実施の形態】以下に実施例、比較例を掲げて本
発明を詳しく説明するが、本発明はこれら実施例のみに
限定されるものではない。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to examples and comparative examples, but the present invention is not limited to these examples.
【0015】(実施例1〜3、比較例1〜3)表1のP
VC配合物をヘンシェルミキサ−にて混合後、8インチ
2軸異速ロ−ルにて、195℃で巻きつき後3分間混練
し、シ−トを作成した。このシ−トを200℃で3分間
予熱したプレスで4分間加圧(150kgf/cm2 )
して15cm×15cm、厚さ0.3mmの試料板を作
成し、この試料板より切り出した試験片を用いてシャル
ピ−衝撃強度、引張強度を測定した。また、シ−ト作成
段階で表面外観を観察しヤケ発生の有無をチェックし
た。その結果を表1に示した。(Examples 1 to 3, Comparative Examples 1 to 3)
After mixing the VC compound with a Henschel mixer, the mixture was wound at 195 ° C. with an 8-inch twin-screw roll at 195 ° C. and kneaded for 3 minutes to prepare a sheet. The sheet was pressed for 4 minutes (150 kgf / cm 2 ) with a press preheated at 200 ° C. for 3 minutes.
Thus, a sample plate having a size of 15 cm × 15 cm and a thickness of 0.3 mm was prepared, and Charpy impact strength and tensile strength were measured using a test piece cut out from the sample plate. In addition, the appearance of the surface was observed at the stage of sheet preparation to check for the occurrence of burns. The results are shown in Table 1.
【0016】(実施例4〜6、比較例4〜6)表2のC
PVC配合物をヘンシェルミキサ−にて混合後、8イン
チ2軸異速ロ−ルにて、200℃で巻きつき後3分間混
練し、シ−トを作成した。このシ−トを205℃で3分
間予熱したプレスで4分間加圧(150kgf/c
m2 )して15cm×15cm、厚さ0.3mmの試料
板を作成し、この試料板より切り出した試験片を用いて
シャルピ−衝撃強度、引張強度を測定した。また、シ−
ト作成段階で表面外観を観察しヤケ発生の有無をチェッ
クした。その結果を表2に示した。(Examples 4 to 6, Comparative Examples 4 to 6) C in Table 2
After mixing the PVC compound with a Henschel mixer, the mixture was wound at 200 ° C. on an 8-inch two-axis variable speed roll and kneaded for 3 minutes to prepare a sheet. This sheet was pressed for 4 minutes with a press preheated at 205 ° C. for 3 minutes (150 kgf / c
m 2 ) to prepare a sample plate having a size of 15 cm × 15 cm and a thickness of 0.3 mm, and Charpy impact strength and tensile strength were measured using a test piece cut out from the sample plate. In addition,
At the preparation stage, the appearance of the surface was observed to check for the occurrence of burns. The results are shown in Table 2.
【0017】〔物性評価方法〕 (1)引張強度 JIS−K−7113に準拠し、23℃で測定した。 (2)シャルピ−衝撃強度 JIS−K−7111に準拠し、23℃で測定した。 (3)ビカット軟化温度 JIS−K−7206に準拠して測定した。[Physical Property Evaluation Method] (1) Tensile Strength Measured at 23 ° C. in accordance with JIS-K-7113. (2) Charpy impact strength Measured at 23 ° C. according to JIS-K-7111. (3) Vicat softening temperature Measured according to JIS-K-7206.
【0018】表1、表2に示す原材料は以下のものを使
用した。 PVC:徳山積水工業社製、平均重合度1000 CPVC:徳山積水工業社製、平均重合度1000、塩
素含有量66.5重量% 錫系安定剤:三共有機合成社製、商品名 ONZ142
F チタン酸カリウムウイスカー:大塚化学社製、商品名
ティスモ−D MBS系衝撃改質剤:呉羽化学社製、商品名 BTA−
751 滑剤:ヘキスト社製、商品名 WAX−OPThe following raw materials shown in Tables 1 and 2 were used. PVC: manufactured by Tokuyama Sekisui Kogyo Co., Ltd., average degree of polymerization 1000 CPVC: manufactured by Tokuyama Sekisui Kogyo Co., Ltd., average degree of polymerization 1000, chlorine content 66.5% by weight Tin-based stabilizer: manufactured by Sankyoki Gosei Co., Ltd., trade name ONZ142
F Potassium titanate whisker: manufactured by Otsuka Chemical Co., Ltd., trade name
Tismo-D MBS-based impact modifier: BTA-, manufactured by Kureha Chemical Co., Ltd.
751 Lubricant: WAX-OP, manufactured by Hoechst
【0019】[0019]
【表1】 [Table 1]
【0020】[0020]
【表2】 [Table 2]
【0021】[0021]
【発明の効果】本発明のPVC組成物は、上述の如くP
VCにチタン酸カリウムウイスカーが添加されることに
より引張強度を低下させずに、耐衝撃性を向上させるこ
とができる。また、CPVCにチタン酸カリウムウイス
カーが添加されることにより耐熱性を低下させずに、耐
衝撃性を向上させることができる。As described above, the PVC composition of the present invention comprises P
By adding potassium titanate whisker to VC, impact resistance can be improved without lowering tensile strength. Further, by adding potassium titanate whisker to CPVC, the impact resistance can be improved without lowering the heat resistance.
Claims (1)
ビニル系樹脂100重量部にチタン酸カリウムウイスカ
ーが1〜10重量部添加されていることを特徴とする塩
化ビニル系樹脂組成物。1. A vinyl chloride resin composition comprising 1 to 10 parts by weight of potassium titanate whisker added to 100 parts by weight of a vinyl chloride resin or a chlorinated vinyl chloride resin.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16252397A JPH115881A (en) | 1997-06-19 | 1997-06-19 | Vinyl chloride-based resin composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16252397A JPH115881A (en) | 1997-06-19 | 1997-06-19 | Vinyl chloride-based resin composition |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH115881A true JPH115881A (en) | 1999-01-12 |
Family
ID=15756249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16252397A Pending JPH115881A (en) | 1997-06-19 | 1997-06-19 | Vinyl chloride-based resin composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH115881A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4770589A (en) * | 1984-10-15 | 1988-09-13 | The Boeing Company | Cargo handling system |
-
1997
- 1997-06-19 JP JP16252397A patent/JPH115881A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4770589A (en) * | 1984-10-15 | 1988-09-13 | The Boeing Company | Cargo handling system |
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