Material and application of ABS alloy tube

ABS alloy tube and special cold-melt adhesive are one of them. ABS alloy tube is widely used in building water supply and central air-conditioning. It is especially used in building water supply riser and central air-conditioning pipe. It can also be used to make automobile exterior parts. Such as car wheel covers, mirror housings, taillight covers, etc. PC/ABS has good formability and can process large parts of automobiles, such as car fenders.
　　Very high cost performance.


　　First, ABS alloy tube introduction


　　ABS resin is a general-purpose thermoplastic engineering plastic developed in the 1940s. It is a terpolymer of propylene (A) butadiene (B) styrene (3) tri-body. It has the characteristics of rigidity and chemical resistance of polyphenylene nitrile, heat resistance, gloss of polystyrene, processing fluidity and impact resistance of polybutadiene, and low temperature characteristics. The performance is widely used in household appliances, electronic building materials, automotive industry, industrial structural materials, etc. However, due to the defects of weather resistance and poor flame retardancy of ABS resin itself, it also limits the application of ABS resin in building materials. Based on this, we aspect of flame retardancy of the ABS resin system formulations, weather resistance, mechanical properties, molding processability and other comprehensive studies in order to develop the water supply system with ABS alloy tube material, tube products.


Development trend and brand comparison of 　　ABS alloy tubes


　　The ABS alloy was first developed by the American company of Goodrich and Mabo (now Borg Warnet), which was developed in the late 1960s and commercialized in the 1970s.


　　After more than 20 years of development and progress, the United States and Japan are currently mass-produced, and have been widely used in the automotive industry, the electrical industry, office supplies, and daily necessities. In the late 1980s, China began to study ABS alloy materials, including Hunan Institute of Plastics, Shanghai Gaoqiao Chemical Plant, Zhejiang Plastics Research Institute, Lanzhou Chemical Industry Corporation, Jilin Chemical Industry Corporation, Chengdu University of Science and Technology and other enterprises and research institutes to develop ABS. alloy. Mainly used in the electronics, electrical, automotive, household appliances and other industries and fields, the physicochemical properties of ABS alloys are similar to pure ABS plastics, improving impact stress cracking, processability, notch sensitivity, and improving the flammability of products. Aging resistance.


　　Two, ABS alloy tube material tube performance Introduction


　　ABS alloy tube material, the tube member in addition to having a pure ABS pipe, tube outer performance, but also improved impact resistance, stress cracking resistance, greatly improving the flame retardancy and resistance to aging. As a result, ABS alloy tubes have become the material of choice for many demanding pipeline applications.


　　A, excellent physical and mechanical properties


　　Vicat softening temperature (load 49N) 92°C


　　Longitudinal retraction rate 2‰


　　Drop hammer impact test (0 ° C) TIR all qualified, no crack


　　Hydraulic test (bonded connection) 6.72Mpa lh no rupture leakage


　　Connection sealing test (bonded connection) 6.72Mpa lh no rupture leakage


　　Blasting experiment 30 ° C liquid medium 8.8 Mpa


　　ABS alloy tube Caineng achieve plastic tapping, screw connection, having a good toughness and strength, which means that ABS alloy tube channel system can be used under severe conditions could not do other plastics.


　　B, flame retardant properties


　　Oxygen index 26.4 (test according to GB/T2460-93)


　　Horizontal combustion II-30mm (GB2408-80)


　　According to the provisions of GB8624-1997, the combustion performance of the sample is set to B2.


　　C, weather resistance


　　After 1000 hours of artificial climate accelerated aging test, the tensile strength, impact strength and flexural strength were basically unchanged, indicating that the product has good anti-aging properties.


　　D, non-toxic and stain-resistant


　　Since the ABS alloy formulation does not contain any harmful metal stabilizers, the main indicators of the soaking water inspection project have reached the control water quality standard after soaking experiments, and are especially suitable for conveying high-purity water, used in pharmaceutical production, food production and beverage production.


　　E, corrosion resistance, wear resistance


　　ABS alloy is not affected by internal and external corrosion, and can withstand the abrasion and corrosion of a wide range of acid, alkali and salt resistant etched slurry, which can quickly damage steel and other traditional pipe materials.


　　F, temperature range


　　One of the most important advantages of ABS alloy over other plastics is that it can be used in the temperature range of -40 ° C ≈ +60 ° C, which makes the ABS alloy adaptable widely, greatly breaking the performance requirements of common PVC pipe and PE pipe (commonly used The low temperature embrittlement index of PVC pipe and PE pipe is -5 °C).


　　G, thermal expansion


　　ABS alloy tube thermal expansion material was 8 × 10MMK and UPVC pipe is substantially the same, but much smaller than the PE tube (13 × 16MMK), ABS alloy tube genus rigid tube, it can greatly control tube external pressure changes repeatedly, to the pipe, the pipe member Stress changes caused by the joints. Improve the safety, reliability and durability of the pipeline.


　　H, light weight, good heat preservation


　　The same volume weight is only 1/8 of the iron pipe, 5/6 weight of the PVC pipe, the heat transfer coefficient is 5×10-4 卡/cm.m.second (Celsius), and the metal pipe is 1/200, the energy reduction loss is 200 times the iron pipe can improve the efficiency and save the insulation cost.


　　I, size and pressure range, connection method


　　ABS alloy tube standard sizes range from 15mm inner diameter of the duct system to an inner diameter of 600 mm. The rated pressure is from 0.6Mpa to 1.6Mpa. Connections are available in both cold and flanged connections.