Material Notes: | Sarlink TPV 5700B Series are highly engineered extrusion-grade thermoplastic vulcanizates with outstanding UV stability designed for demanding automotive interior and exterior sealing applications, including glass run channels, waistbelts, weather strips, seals and other profiles. This product is a high hardness, medium density, high performance grade with low fogging and excellent color retention and elastic properties. Availability: Africa & Middle East; Asia Pacific; Europe; Latin America; North America Additive: UV Stabilizer Features: Chemical Resistant; High Hardness; High Heat Resistance; High Tensile Strength; Low Compression Set; Medium Density; Resilient; UV Resistant Uses: Automotive Applications; Belts/Belt Repair; Profiles; Rubber Replacement; Seals; Weatherstripping |
Physical Properties | Metric | English | Comments |
---|---|---|---|
Density | 0.960 g/cc | 0.0347 lb/in3 | ISO 1183 |
Viscosity | 400 cP @Shear Rate 206 1/s, Temperature 200 °C |
400 cP @Shear Rate 206 1/s, Temperature 392 °F |
Shear, Capillary; ASTM D3835 |
Mechanical Properties | Metric | English | Comments |
Hardness, Shore D | 38 @Time 5.00 sec |
38 @Time 0.00139 hour |
Extruded; ISO 868 |
40 @Time 5.00 sec |
40 @Time 0.00139 hour |
Injection Molded; ISO 868 | |
Tensile Strength at Break | 18.0 MPa | 2610 psi | Flow; ISO 37 |
19.0 MPa | 2760 psi | Across Flow; ISO 37 | |
15.2 MPa @Treatment Temp. 135 °C, Time 3.60e+6 sec |
2210 psi @Treatment Temp. 275 °F, Time 1000 hour |
Across Flow, Change in Air at 168 hr; ISO 188 | |
Tensile Strength | 9.03 MPa @Strain 100 % |
1310 psi @Strain 100 % |
Across Flow; ISO 37 |
13.3 MPa @Strain 100 % |
1930 psi @Strain 100 % |
Flow; ISO 37 | |
9.48 MPa @Strain 100 %, Treatment Temp. 150 °C |
1380 psi @Strain 100 %, Treatment Temp. 302 °F |
Across Flow, Change in Air at 168 hr; ISO 188 | |
9.85 MPa @Strain 100 %, Treatment Temp. 135 °C |
1430 psi @Strain 100 %, Treatment Temp. 275 °F |
Across Flow, Change in Air at 1000 hr; ISO 188 | |
Elongation at Break | 490 % | 490 % | Flow; ISO 37 |
640 % | 640 % | Across Flow; ISO 37 | |
480 % @Treatment Temp. 135 °C, Time 3.60e+6 sec |
480 % @Treatment Temp. 275 °F, Time 1000 hour |
Across Flow, Change in Air at 168 hr; ISO 188 |
TPV SARLINK X5740DB
TPV组成
许多塑料和橡胶之间可形成TPV,但仅有个别共混物经过动态硫化后具有实用价值,商业化的有PP/PE/EPDM,PP/NBR,PP/ACM,PS/SEBS。在化工出版社《热塑性弹性体》一书中对11种橡胶和9种塑料制备的99种橡胶/塑料共混物进行了评论,研究发现,要得到最佳性能的橡胶/热塑性塑料动态硫化共混物,必须满足以下条件:
(1)塑料和橡胶两种聚合物的表面能匹配;
(2)橡胶缠结分子链长度较低;
(3)塑料的结晶度大于15%。当塑料与橡胶之间的极性或表面能差别比较大的情况下,添加合适的相容剂,再进行动态硫化,也可以得到性能优良的共混物。
1)注塑加工
TPV的熔体粘度比许多种普通热塑性材料更大,在加工时,需应用较大的注料嘴、注料口、流道和浇口,还需要采用高的注射压力和较快的注射速率,以提高充模速度和减少飞边,此后在较高的压力下有一个短的保持时间,使之足以将浇料口冻结。 注射螺杆的速度应当是100至200转/分,背压力在不需要混合时应当尽可能低。
2)挤塑加工
不需要真空定径。建议采用长径比为28比1或更大比例的挤塑机。通常单段螺杆比为3比1左右,如果需要用筛网组合,可用20至60网目的筛网。最好将熔体温度保持在规定范围的下限,使挤塑产品的质量最优。
3)吹塑加工
TPV机械操作条件要求与注塑和挤塑所规定的相同。模具设计、型坯尺寸、加工周期时间、以及壁厚均匀等吹塑加工因素都与制件的几何形状有很大的关系。熔体加热过度将使牵伸比下降,应当避免过热。
TPV SARLINK X5740DB
交通器材
1、道路、桥梁伸缩缝;
2、道路安全设施、缓冲防撞部件;
3、集装箱密封条。
建筑建材
1、动力部件密封条
2、建筑伸缩缝、密封条
3、供排水管密封件、水灌系统控制阀等