巴陵石化热塑性橡胶SEBS YH-502T/502

一、热塑性橡胶SEBS YH-502/502T基本参数

1、外观：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：30%（重量、参考）；

3、结构：线型；

4、拉伸强度（≥MPa）：27；

5、扯断伸长率（≥%）：540；

6、300%定伸应力（≥Mpa）：4.0；

7、扯断永久变形（≤%）：16；

8、邵氏A硬度≥（A）：73；

9、甲苯溶液粘度（25℃、10%、Mpa.s）：180；

10、挥发分（≤%）：0.7

11、加氢度（≥）：97

二、热塑性橡胶SEBS YH-502应用

1、YH-502SEBS的分子量中等，加工弹性较大、具有良好的透明性，适合于塑料改性、邵A20~40度的软质弹性体、透明软质玩具如果冻蜡烛、片材、根据热熔胶粘度要求可与SIS配混生产热熔胶、玻璃密封胶、部分塑料的改性、抗振材料等、部分用于改善其它牌号的加工性与力学性能平衡性，而用于共混材料。

三、热塑性橡胶SEBS-YH502典型应用配方：

1、以YH-502与15#白油按1：10~15配比生产的果冻蜡膏体透明、无色、无味，燃烧时不流淌，无烟无毒，燃烧时间比一般蜡烛长3—4倍；不潮解，储存期长，且可调香、调色，比传统蜡烛更美观。

2、YH-502生产热熔胶时基础配方与YH-501基本相同，生产的热溶胶内聚力优于YH-501，但熔融粘度较高，通过增加填充油可改善热熔胶的熔融粘度。

3、果冻蜡配方：

YH—502：8份，液体石蜡：5份，白油：87份，抗氧剂：1份

将上述原料加入反应釜中于180℃温度下搅拌20分钟即可，对于一些需要一定拉伸强度的邵氏A0度胶可将YH—502换成YH—503即可。如需提高硬度可视实际情况加入适当比例的YH—502、YH—503。

 

 

Baling Petrochemical thermoplastic rubber SEBS yh-502 / 502t

1、 Basic parameters of thermoplastic rubber SEBS yh-502 / 502t

1. Appearance: white or light color, powder or even granular, free of mechanical impurities and oil stains

2. Styrene content: 30% (weight, reference);

3. Structure: linetype;

4. Tensile strength (≥ MPa): 27;

5. Elongation at break (≥%): 540;

6. 300% constant elongation stress (≥ MPa): 4.0;

7. Breaking permanent deformation (≤%): 16;

8. shore a hardness ≥ (a): 73;

9. viscosity of toluene solution (25 ℃, 10%, MPa. S): 180;

10. Volatile matter (≤%): 0.7

11. Hydrogenation degree (≥): 97

 

2、Application of thermoplastic rubber SEBS yh-502

1. Yh-502sebs has medium molecular weight, large processing elasticity and good transparency. It is suitable for plastic modification, soft elastomer with Shao A20 ~ 40 degrees and transparent soft toys. If candles and sheets are frozen, it can be mixed with SIS according to the viscosity requirements of hot melt adhesive to produce hot melt adhesive, glass sealing adhesive, modification of some plastics, anti vibration materials, etc Some of them are used to improve the balance between processability and mechanical properties of other brands, but they are used for blending materials.

 

3、 Typical application formula of thermoplastic rubber sebs-yh502:

1. The jelly wax paste produced with yh-502 and 15# white oil in the ratio of 1:10 ~ 15 is transparent, colorless and tasteless, does not flow during combustion, smokeless and non-toxic, and the combustion time is 3-4 times longer than that of ordinary candles; Non deliquescence, long storage period, adjustable fragrance and color matching, which is more beautiful than traditional candles.

2. When yh-502 produces hot melt adhesive, the basic formula is basically the same as yh-501. The cohesion of the hot melt adhesive produced is better than yh-501, but the melting viscosity is high. The melting viscosity of the hot melt adhesive can be improved by adding filling oil.

3. Jelly wax formula:

Yh-502: 8 parts, liquid paraffin: 5 parts, white oil: 87 parts, antioxidant: 1 part

Add the above raw materials into the reactor and stir at 180 ℃ for 20 minutes. For some shore A0 adhesive requiring certain tensile strength, yh-502 can be replaced with yh-503. If it is necessary to improve the hardness, add yh-502 and yh-503 in appropriate proportion according to the actual situation.