JPH06322209A - Vinyl chloride resin composition - Google Patents
Vinyl chloride resin compositionInfo
- Publication number
- JPH06322209A JPH06322209A JP11455093A JP11455093A JPH06322209A JP H06322209 A JPH06322209 A JP H06322209A JP 11455093 A JP11455093 A JP 11455093A JP 11455093 A JP11455093 A JP 11455093A JP H06322209 A JPH06322209 A JP H06322209A
- Authority
- JP
- Japan
- Prior art keywords
- vinyl chloride
- styrene
- resin
- weight
- chloride resin
- 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.)
- Granted
Links
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- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は加工性がよく耐衝撃性に
優れた成形品を与える塩化ビニル系樹脂組成物に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vinyl chloride resin composition which gives a molded article having good workability and excellent impact resistance.
【0002】[0002]
【従来の技術】多くの塩化ビニル系樹脂では一般に硬質
配合において平均重合度の高い方が抗張力、耐熱性等の
物性の向上すること、また耐衝撃性改質剤の添加は少量
でも大きな効果の得られることが知られている。しかし
重合度が高くなるにつれて加工性が低下し、カレンダー
成形、押出成形、射出成形、ブロー成形などの高速成形
で必要とされる、流動性と表面平滑性に欠けてくる。こ
のような流動性と表面平滑性の不足を補う方法として加
工温度を上げる方法があるが、硬質配合系で塩化ビニル
系樹脂の平均重合度が高い場合に、満足な流動性と表面
平滑性の得られる状態にまで温度条件を高めると、樹脂
そのものが熱によって劣化し、本来樹脂が持っている筈
の物性が発揮されなくなる。また、成形加工性を改善す
るために重合度の低い樹脂を用いると、流動性と表面平
滑性は向上するものの耐衝撃性が低下するので、さらに
多量の改質剤を混練しなければならず、その結果、耐熱
性、抗張力等の物性も低下する恐れがあった。2. Description of the Related Art In many vinyl chloride resins, generally, the higher the average degree of polymerization in a hard compound, the better the physical properties such as tensile strength and heat resistance, and the addition of an impact modifier is very effective. It is known to be obtained. However, as the degree of polymerization increases, the processability decreases, and the fluidity and surface smoothness required for high-speed molding such as calendar molding, extrusion molding, injection molding and blow molding are lacking. There is a method of raising the processing temperature as a method of compensating for such lack of fluidity and surface smoothness, but when the average polymerization degree of the vinyl chloride resin is high in a hard compounding system, satisfactory fluidity and surface smoothness can be obtained. If the temperature condition is raised to the state where it can be obtained, the resin itself will deteriorate due to heat, and the physical properties that the resin should have will not be exhibited. Further, if a resin having a low degree of polymerization is used to improve the molding processability, the fluidity and the surface smoothness are improved, but the impact resistance is lowered. Therefore, a larger amount of the modifier must be kneaded. As a result, physical properties such as heat resistance and tensile strength may be deteriorated.
【0003】[0003]
【発明が解決しようとする課題】これらの理由により塩
化ビニル系樹脂の加工性の改善には加工助剤を添加する
方法、また耐衝撃性の改善には耐衝撃性改質剤としてゴ
ム系重合体を少量添加する方法が一般に採用されて来
た。これらの方法により温和な加工条件で加工性および
流動性が改善され、ゴム系の添加剤のため衝撃性も改善
できると考えられてきた。しかし、特開昭50-88170号公
報には塩化ビニルグラフト重合体90〜99重量部に、メチ
ルメタクリレートおよび/またはアクリロニトリル、ス
チレン並びにアクリル酸アルキルエステルよりなる共重
合体、アクリロニトリル−ブタジエン−スチレン樹脂、
塩素化ポリエチレンの内の少なくとも一種の高分子物を
1〜10重量部添加してなる樹脂組成物が記載されてい
て、これによれば耐衝撃性の改善は認められるが、流動
性と表面平滑性は改善されていない。同様に、特開昭50
−142661号公報では塩化ビニルの平均重合度は 400〜15
00までがよいとされていて、この組成物の耐衝撃性は高
いものの流動性と表面平滑性は改善されていない。さら
に特公昭48-57846号および特開昭60−179443号の両公報
の記載もまた同様である。したがって、本発明の目的は
耐衝撃性、抗張力等の物性に優れ、表面平滑性の良好な
成形品を与える、塩化ビニル系樹脂組成物を提供するも
のである。For these reasons, a processing aid is added to improve the processability of a vinyl chloride resin, and a rubber-based resin is used as an impact modifier to improve impact resistance. The method of adding a small amount of coalescence has been generally adopted. It has been considered that these methods can improve the workability and fluidity under mild processing conditions, and can improve the impact resistance due to the rubber-based additive. However, in JP-A-50-88170, 90 to 99 parts by weight of a vinyl chloride graft polymer, a copolymer of methyl methacrylate and / or acrylonitrile, styrene and an alkyl acrylate, acrylonitrile-butadiene-styrene resin,
A resin composition containing 1 to 10 parts by weight of at least one polymer selected from chlorinated polyethylenes is described, which shows improvement in impact resistance but fluidity and surface smoothness. Sex has not improved. Similarly, Japanese Patent Laid-Open No. Sho 50
-142661, the average degree of polymerization of vinyl chloride is 400 to 15
It is said that up to 00 is good, and although the impact resistance of this composition is high, the fluidity and surface smoothness are not improved. Furthermore, the descriptions in both Japanese Patent Publication No. 48-57846 and Japanese Patent Laid-Open No. 60-179443 are also the same. Therefore, an object of the present invention is to provide a vinyl chloride resin composition which is excellent in physical properties such as impact resistance and tensile strength and gives a molded article having good surface smoothness.
【0004】[0004]
【課題を解決するための手段】そこで本発明者らは上記
の相反する性質である加工性(特に表面平滑性)と物性
(特に耐衝撃性と抗張力)を同時に充たすにはどうすれ
ばよいか鋭意検討した結果、塩化ビニル系樹脂に、平均
粒径が0.08μm 以下のポリブタジエンラテックスまたは
スチレン−ブタジエンゴム(以下SBRとする)ラテッ
クスから得られる、メチルメタクリレート−ブタジエン
−スチレン(以下MBSとする)樹脂またはアクリロニ
トリル−ブタジエン−スチレン(以下ABSとする)樹
脂と、アクリロニトリル−スチレン(以下ASとする)
共重合体とを加えることで、加工性、物性共に優れたも
のの得られることを見出し、本発明を完成した。すなわ
ち、本発明による塩化ビニル系樹脂組成物は、A)平均
重合度が 700〜2500の塩化ビニル系樹脂 100重量部、
B)平均粒子径が0.08μm 以下のポリブタジエンラテッ
クスまたはSBRラテックスのグラフト重合物である、
MBS樹脂またはABS樹脂4〜15重量部およびC)ア
クリロニトリルとスチレンの重量比が10:90〜35:65で
あるAS共重合体1〜10重量部からなるものである。Therefore, the inventors of the present invention have earnestly studied how to simultaneously satisfy the contradictory properties of workability (particularly surface smoothness) and physical properties (particularly impact resistance and tensile strength). As a result, methyl methacrylate-butadiene-styrene (hereinafter referred to as MBS) resin or acrylonitrile obtained from polybutadiene latex or styrene-butadiene rubber (hereinafter referred to as SBR) latex having an average particle size of 0.08 μm or less is added to vinyl chloride resin. -Butadiene-styrene (hereinafter referred to as ABS) resin and acrylonitrile-styrene (hereinafter referred to as AS)
By adding a copolymer, it was found that a product having excellent processability and physical properties can be obtained, and the present invention was completed. That is, the vinyl chloride resin composition according to the present invention comprises: A) 100 parts by weight of a vinyl chloride resin having an average degree of polymerization of 700 to 2500;
B) a graft polymer of polybutadiene latex or SBR latex having an average particle diameter of 0.08 μm or less,
It comprises 4 to 15 parts by weight of MBS resin or ABS resin and 1 to 10 parts by weight of AS copolymer having a weight ratio of C) acrylonitrile and styrene of 10:90 to 35:65.
【0005】以下、本発明を詳細に説明する。本発明の
塩化ビニル系樹脂組成物において、A成分として使用さ
れる塩化ビニル系樹脂は平均重合度が 700〜2500、好ま
しくは1000〜1700のものである。この平均重合度が 700
未満のものは耐衝撃強度、耐熱性などが劣り、また2500
を超えるものは成形加工時の溶融樹脂温度を高くしない
と加工性が悪く、それによる高温のための熱劣化が著し
くなって樹脂の本来持っている物性が損なわれるように
なる。この塩化ビニル系樹脂には、ポリ塩化ビニル樹
脂、塩化ビニルを50重量%以上含有するこれと共重合可
能なビニル系単量体との共重合体および塩素化ポリ塩化
ビニルなどが例示されるが、これらの内ではとくにポリ
塩化ビニル樹脂が好ましい。なお、共重合可能なビニル
系単量体としては、エチレン、プロピレンなどのα−オ
レフィン;アクリル酸、アクリル酸メチル、アクリル酸
エチルなどのアクリル酸またはそのエステル;メタクリ
ル酸、メタクリル酸メチルなどのメタクリル酸またはそ
のエステル;マレイン酸またはそのエステル;酢酸ビニ
ル、プロピオン酸ビニルなどのビニルエステル;ラウリ
ルビニルエーテル、イソブチルビニルエーテルなどのビ
ニルエーテル;無水マレイン酸;塩化ビニリデン;マレ
イミドなどが挙げられ、これらは単独または2種以上の
組合せで用いられる。The present invention will be described in detail below. In the vinyl chloride resin composition of the present invention, the vinyl chloride resin used as the component A has an average degree of polymerization of 700 to 2500, preferably 1000 to 1700. This average degree of polymerization is 700
If less than 2,500, the impact strength and heat resistance are inferior.
If the temperature exceeds the above value, the processability will be poor unless the temperature of the molten resin during molding is increased, and the heat deterioration due to the high temperature due to it will be remarkable and the physical properties of the resin will be impaired. Examples of the vinyl chloride resin include a polyvinyl chloride resin, a copolymer of vinyl chloride containing 50% by weight or more of vinyl chloride and a copolymerizable vinyl monomer, and chlorinated polyvinyl chloride. Of these, polyvinyl chloride resin is particularly preferable. The copolymerizable vinyl monomers include α-olefins such as ethylene and propylene; acrylic acid such as acrylic acid, methyl acrylate and ethyl acrylate, or esters thereof; methacrylic acid such as methacrylic acid and methyl methacrylate. Acids or esters thereof; maleic acid or esters thereof; vinyl esters such as vinyl acetate and vinyl propionate; vinyl ethers such as lauryl vinyl ether and isobutyl vinyl ether; maleic anhydride; vinylidene chloride; maleimide, etc., which may be used alone or in combination. Used in the above combination.
【0006】本発明の樹脂組成物においてB成分として
使用されるMBS樹脂またはABS樹脂は、平均粒子径
が0.08μm 以下のポリブタジエンラテックスまたはSB
Rラテックスのグラフト重合物である。このような平均
粒子径のラテックスから得られたMBS樹脂またはAB
S樹脂は、塩化ビニル系樹脂組成物中でPVCの一次粒
子(1〜2μm )の界面に存在し、PVCの一次粒子を
保持する機能を持つ。その結果、耐衝撃性と共にこれと
相反する物性である抗張力をも向上することを可能にす
る。また、このような塩化ビニル系樹脂組成物は、例え
ば、押出成形すると表面平滑性に優れ細かなところまで
きれいに押し出せるというように、成形性が著しく向上
する。これに対し、上記ラテックスの平均粒子径が0.08
μm より大きいと、耐衝撃性は改善されるが、PVCの
一次粒子の保持が困難となり抗張力が低下する。加工性
についてもラテックスの平均粒子径が0.08μm 以下では
PVCの一次粒子の保持が容易なため広い加工温度幅で
成形可能であるが、0.08μm を超えると一次粒子の保持
が困難となり加工温度幅が狭くなる。The MBS resin or ABS resin used as the component B in the resin composition of the present invention is a polybutadiene latex or SB having an average particle diameter of 0.08 μm or less.
It is a graft polymer of R latex. MBS resin or AB obtained from latex having such an average particle size
The S resin is present at the interface of the PVC primary particles (1 to 2 μm) in the vinyl chloride resin composition and has the function of holding the PVC primary particles. As a result, it becomes possible to improve not only impact resistance but also tensile strength, which is a physical property contradictory thereto. Further, such a vinyl chloride resin composition has remarkably improved moldability, for example, when it is extrusion-molded, it has excellent surface smoothness and can be extruded neatly to fine parts. In contrast, the average particle size of the latex is 0.08
If it is larger than μm, the impact resistance is improved, but it becomes difficult to retain the primary particles of PVC and the tensile strength is lowered. Regarding the processability, if the average particle size of the latex is 0.08 μm or less, the primary particles of PVC can be easily retained, so molding can be performed over a wide range of processing temperatures. Becomes narrower.
【0007】なお、このMBS樹脂またはABS樹脂は
ブタジエンを40〜80重量%含有するものが好ましい。こ
れが80重量%を超えると、耐衝撃性はよいが、流動性や
抗張力を低下させる原因となり、40重量%未満では耐衝
撃性を改善することができなくなる。このMBS樹脂ま
たはABS樹脂は、上記塩化ビニル系樹脂 100重量部に
対して4〜15重量部の割合で使用されるが、これが4重
量部未満では耐衝撃性の改良効果が得られず、また15重
量部を超えると耐熱性、抗張力、加工性などの諸特性が
低下するため好ましくない。The MBS resin or ABS resin preferably contains 40 to 80% by weight of butadiene. If it exceeds 80% by weight, the impact resistance is good, but it causes deterioration of fluidity and tensile strength. If it is less than 40% by weight, the impact resistance cannot be improved. The MBS resin or ABS resin is used in a proportion of 4 to 15 parts by weight with respect to 100 parts by weight of the vinyl chloride resin, but if it is less than 4 parts by weight, the effect of improving impact resistance cannot be obtained, and If it exceeds 15 parts by weight, various properties such as heat resistance, tensile strength and workability are deteriorated, which is not preferable.
【0008】本樹脂組成物においてC成分としてのAS
共重合体は、アクリロニトリルとスチレンの重量比が1
0:90〜35:65のもので、とくには20:80〜30:70のも
のが好ましい。この共重合体中のアクリロニトリルが10
重量%未満であると樹脂との相溶性が低下して分離する
おそれがあり、また35重量%を超えると流動性が低下す
る原因となる。このAS共重合体は塩化ビニル系樹脂 1
00重量部に対し1〜10重量部、とくには3〜10重量部の
割合で使用されるが、これが1重量部未満では抗張力、
耐熱性の改良効果が得られず、10重量部を超えると耐衝
撃性、加工性の低下を招く恐れがある。AS as the C component in the present resin composition
The copolymer has a weight ratio of acrylonitrile and styrene of 1
It is preferably 0:90 to 35:65, and particularly preferably 20:80 to 30:70. The acrylonitrile content in this copolymer is 10
If it is less than 35% by weight, the compatibility with the resin may be lowered and the resin may be separated, and if it exceeds 35% by weight, the fluidity may be lowered. This AS copolymer is a vinyl chloride resin 1
It is used in a proportion of 1 to 10 parts by weight, especially 3 to 10 parts by weight with respect to 00 parts by weight.
The effect of improving heat resistance cannot be obtained, and if it exceeds 10 parts by weight, impact resistance and workability may be deteriorated.
【0009】本発明の樹脂組成物には上記3種類の樹脂
成分に加えて、さらに必要に応じて安定剤、安定化助
剤、滑剤、無機充填剤、可塑剤、着色剤、紫外線吸収
剤、抗酸化剤などの各種添加剤を加えることができる。
安定剤としては一般の塩化ビニル樹脂に配合されるもの
であれば特に制限はなく、ラウレート系、マレート系、
メルカプタイド系などの有機スズ安定剤、Ca、Ba、
Pbなどの金属石けん安定剤、三塩基性硫酸鉛、けい酸
鉛、二塩基性亜りん酸鉛などの鉛安定剤などが挙げら
れ、これらは単独または2種以上の組み合わせで使用さ
れる。安定化助剤としてはエポキシ化合物などが、また
滑剤としてはパラフィンワックスやポリエチレンワック
スなどの純炭化水素系、パルミチン酸やステアリン酸な
どの脂肪酸系、ステアリルアルコールなどの脂肪族アル
コール系、脂肪酸とアルコールとのエステル系および脂
肪酸と多価アルコールとの部分エステル系などが、それ
ぞれ挙げられる。無機充填剤としては炭酸カルシウム、
酸化チタン、タルクなどが挙げられるが、これらの内で
は炭酸カルシウムが好ましく、重質炭酸カルシウム、軽
質炭酸カルシウムのいずれでもよいが、耐衝撃性を重視
する場合には軽質炭酸カルシウムの多量添加が好まし
い。In addition to the above-mentioned three types of resin components, the resin composition of the present invention may further contain a stabilizer, a stabilizing aid, a lubricant, an inorganic filler, a plasticizer, a colorant, an ultraviolet absorber, if necessary. Various additives such as antioxidants can be added.
The stabilizer is not particularly limited as long as it is a compound blended with a general vinyl chloride resin, and a laurate type, a malate type,
Organic tin stabilizers such as mercaptide, Ca, Ba,
Examples thereof include metal soap stabilizers such as Pb, lead stabilizers such as tribasic lead sulfate, lead silicate, and dibasic lead phosphite, which may be used alone or in combination of two or more. As a stabilizing aid, an epoxy compound or the like, and as a lubricant, a pure hydrocarbon type such as paraffin wax or polyethylene wax, a fatty acid type such as palmitic acid or stearic acid, an aliphatic alcohol type such as stearyl alcohol, a fatty acid and an alcohol. And the partial ester type of a fatty acid and a polyhydric alcohol. Calcium carbonate as an inorganic filler,
Titanium oxide, talc and the like can be mentioned. Among these, calcium carbonate is preferable, and either heavy calcium carbonate or light calcium carbonate may be used, but when importance is attached to impact resistance, addition of a large amount of light calcium carbonate is preferable. .
【0010】これらの成分からなる本発明の塩化ビニル
系樹脂組成物は、高速ミキサーなどの通常の手段を用い
て混合し粉末状またはペレット状にして、カレンダー成
形、押出成形、射出成形、ブロー成形などにより成形加
工されて所望の形状の成形品とすることができる。The vinyl chloride resin composition of the present invention comprising these components is mixed by a usual means such as a high-speed mixer and made into a powder or pellet form, and calender molding, extrusion molding, injection molding, blow molding. A molded product having a desired shape can be formed by molding and the like.
【0011】[0011]
【実施例】以下、本発明の具体的態様を実施例および比
較例により説明するが、本発明はこの実施例の記載に限
定されるものではない。 実施例1〜6および比較例1〜16 表1および表2に示した処方の各樹脂成分に、さらに安
定剤1重量部、安定助剤 0.7重量部、無機充填剤6重量
部および滑剤 0.5重量部を加えて混合し、それぞれの混
合物を6インチロールを用いて 170℃で5分間混練した
後、厚さ 0.8mmのシートを作製した。この混練物および
シートを用いて下記の方法で耐衝撃性、耐熱性、抗張力
および表面平滑性の各試験を行い、その結果を各表に併
記した。EXAMPLES Specific embodiments of the present invention will be described below with reference to Examples and Comparative Examples, but the present invention is not limited to the description of these Examples. Examples 1 to 6 and Comparative Examples 1 to 16 In addition to the resin components of the formulations shown in Table 1 and Table 2, 1 part by weight of a stabilizer, 0.7 parts by weight of a stabilizing aid, 6 parts by weight of an inorganic filler and 0.5 part by weight of a lubricant are added. Parts were added and mixed, and each mixture was kneaded with a 6-inch roll at 170 ° C. for 5 minutes, and then a sheet having a thickness of 0.8 mm was prepared. Using the kneaded product and the sheet, impact resistance, heat resistance, tensile strength and surface smoothness tests were conducted by the following methods, and the results are also shown in each table.
【0012】使用した成分および試験方法の詳細は下記
の通りである。 (成 分) ・ポリ塩化ビニル系樹脂(表中、PVCと略す): TK- 600 (信越化学工業社製、商品名、ポリ塩化ビニ
ル、平均重合度 600) TK- 800 (同前、平均重合度 800) TK-1000 ( 〃、 〃 1000) TK-1300 ( 〃、 〃 1300) TK-2500P( 〃、 〃 3000) ・MBS樹脂(表中、MBSと略す): MBS-:グラフト重合タイプ、ブタジエン含有量:60重
量%、ラテックス粒子径: 0.2μm 。 MBS-:同前、ブタジエン含有量:60重量%、ラテック
ス粒子径:0.05μm 。 ・ABS樹脂(表中、ABSと略す): ABS-:同前、ブタジエン含有量:65重量%、ラテック
ス粒子径: 0.2μm 。 ABS-:同前、ブタジエン含有量:60重量%、ラテック
ス粒子径:0.08μm 。Details of the components used and the test method are as follows. (Component) Polyvinyl chloride resin (abbreviated as PVC in the table): TK-600 (Shin-Etsu Chemical Co., Ltd., trade name, polyvinyl chloride, average degree of polymerization 600) TK-800 (same as above, average polymerization 800) TK-1000 (〃, 〃 1000) TK-1300 (〃, 〃 1300) TK-2500P (〃, 〃 3000) ・ MBS resin (abbreviated as MBS in the table): MBS-: graft polymerization type, butadiene Content: 60% by weight, latex particle size: 0.2 μm. MBS-: same as before, butadiene content: 60% by weight, latex particle size: 0.05 μm. ABS resin (abbreviated as ABS in the table): ABS-: same as above, butadiene content: 65% by weight, latex particle size: 0.2 μm. ABS-: same as before, butadiene content: 60% by weight, latex particle size: 0.08 μm.
【0013】 ・AS共重合体(表中、ASと略す): AS- :アクリロニトリル:スチレン=23:77(重量比) AS- : 〃 =5:95(重量比) AS- : 〃 =40:60(重量比) ・安定剤:T-17MJ(勝田化工社製、商品名、有機すず安
定剤) ・安定助剤:ステアリン酸カルシウム ・無機充填剤:白艶華 CCR(白石カルシウム社製、商品
名、炭酸カルシウム) ・滑剤:AC-6A (アライドケミカル社製、商品名、ポリ
エチレンワックス)AS copolymer (abbreviated as AS in the table): AS-: acrylonitrile: styrene = 23:77 (weight ratio) AS-: 〃 = 5:95 (weight ratio) AS- : 〃 = 40: 60 (weight ratio) -Stabilizer: T-17MJ (Katsuda Kako Co., Ltd., trade name, organic tin stabilizer) -Stabilizing aid: calcium stearate-Inorganic filler: Shirahama CCR (Shiroishi Calcium Co., Ltd., trade name, carbonic acid Calcium) -Lubricant: AC-6A (trade name, polyethylene wax manufactured by Allied Chemical Co., Ltd.)
【0014】(試験方法) ・耐衝撃性試験:前述した厚さ 0.8mmのシートを4枚重
ね合わせてプレスし、厚さ3mmのシートとしたものにつ
いて、JIS K-7110に基づいて測定し、80kg・cm/cm2 以上
を合格とした。 ・耐熱性試験:前述した厚さ 0.8mmのシートを4枚重ね
合わせてプレスし、厚さ3mmのシートとしたものについ
て、JIS K-7206に基づいてビカット軟化点(℃)を測定
し、90℃以上を合格とした。 ・抗張力試験:前述した厚さ 0.8mmのシートを2枚重ね
合わせてプレスし、厚さ1mmのシートとしたものについ
て、JIS K-7113に基づいて測定し、降伏値で470kgf/cm2
以上を合格とした。 なお、上記各試験において厚さ3mmのシートを得るには
予熱6分、加圧4分でプレスし、厚さ1mmのシートを得
るには予熱5分、加圧3分でプレスした。(Test method) -Impact resistance test: The above-mentioned four 0.8 mm-thick sheets were stacked and pressed to form a sheet having a thickness of 3 mm, which was measured according to JIS K-7110. Passing 80kgcm / cm 2 or more. -Heat resistance test: The above-mentioned four 0.8 mm-thick sheets were stacked and pressed to make a 3 mm-thick sheet, and the Vicat softening point (° C) was measured based on JIS K-7206. A temperature of ℃ or above was regarded as acceptable. -Tensile strength test: The above-mentioned two 0.8 mm-thick sheets were superposed and pressed to make a 1 mm-thick sheet, which was measured according to JIS K-7113, and the yield value was 470 kgf / cm 2
The above was passed. In each of the above tests, a sheet having a thickness of 3 mm was pressed with a preheating time of 6 minutes and a pressure of 4 minutes was pressed, and a sheet having a thickness of 1 mm was pressed with a preheating time of 5 minutes and a pressure of 3 minutes.
【0015】・表面平滑性:前述した混練物を20mmφ押
出機によりシートに押出し、成形品の表面を観察して下
記の4段階の基準で評価した。 ◎‥シートの両端にささくれがなく表面に光沢があって
ツルツルしている。この段階のものを合格とした。 ○‥表面はツルツルしているが、両端の内のどちらかに
ささくれがある。 △‥表面はツルツルしているが、両端にささくれがあ
る。 ×‥表面はざらざらで光沢がなく両端にささくれがあ
る。Surface smoothness: The above-mentioned kneaded product was extruded into a sheet by a 20 mmφ extruder, and the surface of the molded product was observed and evaluated according to the following four criteria. ◎ The edges of the sheet are smooth and the surface is glossy and smooth. Those at this stage were accepted. ○ The surface is slippery, but there is a swelling on either end. △: The surface is slippery, but there are blister on both ends. ×: The surface is rough and not glossy, and both ends are flaky.
【0016】[0016]
【表1】 [Table 1]
【0017】[0017]
【表2】 [Table 2]
【0018】[0018]
【発明の効果】本発明による塩化ビニル系樹脂組成物に
よれば、耐衝撃性、抗張力等の物性に優れ、表面平滑性
の良好な成形品を得ることができる。According to the vinyl chloride resin composition of the present invention, a molded article having excellent physical properties such as impact resistance and tensile strength and having good surface smoothness can be obtained.
Claims (1)
系樹脂 100重量部、B)平均粒子径が0.08μm 以下のポ
リブタジエンまたはスチレン−ブタジエンゴムラテック
スのグラフト重合タイプである、メチルメタクリレート
−ブタジエン−スチレン樹脂またはアクリロニトリル−
ブタジエン−スチレン樹脂4〜15重量部およびC)アク
リロニトリルとスチレンの重量比が10:90〜35:65であ
るアクリロニトリル−スチレン共重合体1〜10重量部か
らなる塩化ビニル系樹脂組成物。1. A) 100 parts by weight of a vinyl chloride resin having an average degree of polymerization of 700 to 2500; B) Methyl methacrylate, which is a graft polymerization type of polybutadiene or styrene-butadiene rubber latex having an average particle diameter of 0.08 μm or less. Butadiene-styrene resin or acrylonitrile-
A vinyl chloride resin composition comprising 4 to 15 parts by weight of a butadiene-styrene resin and C) 1 to 10 parts by weight of an acrylonitrile-styrene copolymer having a weight ratio of acrylonitrile and styrene of 10:90 to 35:65.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11455093A JP3068728B2 (en) | 1993-05-17 | 1993-05-17 | Vinyl chloride resin composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11455093A JP3068728B2 (en) | 1993-05-17 | 1993-05-17 | Vinyl chloride resin composition |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06322209A true JPH06322209A (en) | 1994-11-22 |
JP3068728B2 JP3068728B2 (en) | 2000-07-24 |
Family
ID=14640601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11455093A Expired - Fee Related JP3068728B2 (en) | 1993-05-17 | 1993-05-17 | Vinyl chloride resin composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3068728B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001139747A (en) * | 1999-11-12 | 2001-05-22 | Kanegafuchi Chem Ind Co Ltd | Chlorinated vinyl chloride-based resin composition |
-
1993
- 1993-05-17 JP JP11455093A patent/JP3068728B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001139747A (en) * | 1999-11-12 | 2001-05-22 | Kanegafuchi Chem Ind Co Ltd | Chlorinated vinyl chloride-based resin composition |
Also Published As
Publication number | Publication date |
---|---|
JP3068728B2 (en) | 2000-07-24 |
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