巴陵石化热塑性橡胶SEBS YH-561T/561
一、热塑性橡胶SEBS-YH561/561T基本参数
1、白色或浅色，呈粉末或均匀粒状，不含机械杂质及油污。
2、苯乙烯含量：33%（重量、参考）；
3、结构：混合型；
4、拉伸强度（≥MPa）：26.5；
5、扯断伸长率（≥%）：490；
6、300%定伸应力（≥Mpa）：6.5
7、扯断永久变形（≤%）：20；
8、、邵氏A硬度≥（A）：80；
9、、甲苯溶液粘度（25℃、10%、Mpa.s）：1200；
10、挥发分（≤%）：0.7
11、加氢度（≥）：97
二、热塑性橡胶SEBS-YH561应用特点
YH-561是专为低硬度弹性体制品而开发的牌号，其突出的特点是在高充油率下的具有较高的弹性模量，弹性回复优于其它牌号。在相同的充油率下，采用YH-561生产的制品表面更加干爽、硬度高，即使在600%以上的应变下也具有优秀的弹性回复，拉伸强度适中，可满足各种低硬度弹性体的要求，主要用于软质玩具、减振片材等。也可用于较高硬度的弹性体共混生产。
三、热塑性橡胶SEBS-YH561典型应用配方：
1、将1份YH-561与4份15#白油混合、直接注塑的制品典型性能如下：
扯断拉伸强度：2.5MPa
邵氏A硬度：8
扯断伸长率：1000%
扯断永久变形：＜20%
600%弹性回复：＞98%
压缩永久变形：＜5%
制品透明、表面无油润感。
Baling Petrochemical thermoplastic rubber SEBS yh-561t / 561
1、 Basic parameters of thermoplastic rubber sebs-yh561 / 561t
1. White or light color, powder or uniform granular, free of mechanical impurities and oil stains.
2. Styrene content: 33% (weight, reference);
3. Structure: mixed type;
4. Tensile strength (≥ MPa): 26.5;
5. Elongation at break (≥%): 490;
6. 300% constant elongation stress (≥ MPa): 6.5
7. Breaking permanent deformation (≤%): 20;
8. shore a hardness ≥ (a): 80;
9. viscosity of toluene solution (25 ℃, 10%, MPa. S): 1200;
10. Volatile matter (≤%): 0.7
11. Hydrogenation degree (≥): 97
2、 Application characteristics of thermoplastic rubber sebs-yh561
Yh-561 is a brand specially developed for low hardness elastomer products. Its outstanding feature is that it has high elastic modulus under high oil filling rate, and its elastic recovery is better than other brands. Under the same oil filling rate, the products produced by yh-561 have more dry surface and high hardness. Even under the strain of more than 600%, they also have excellent elastic recovery and moderate tensile strength, which can meet the requirements of various low hardness elastomers. They are mainly used for soft toys, vibration damping sheets, etc. It can also be used in the blending production of elastomer with high hardness.
3、 Typical application formula of thermoplastic rubber sebs-yh561:
1. The typical properties of products with 1 part yh-561 mixed with 4 parts 15# white oil and directly injected are as follows:
Tensile strength at break: 2.5MPa
Shore a hardness: 8
Elongation at break: 1000%
Breaking permanent deformation: ＜ 20%
600% elastic recovery: ＞ 98%
Compression set: ＜ 5%
The product is transparent and the surface is free of oil.
