The 14 comparisons show you the difference between TPE and PVC.
Time：2019-06-25Hits：4388
Hello, everyone! I'm Zhanghuimin. I speak for TPE!
First of all, thank you for taking the time to read the TPE material information compiled and released by Zhanghuimin. As a professional TPE material sales specialist, I will do my best to serve you. Remember to purchase TPE/TPR materials Call me: 13829158611(Zhanghuimin) In the eyes of most people, TPE is an environmentally friendly material, PVC is toxic, and the two materials are completely different. But in my opinion, these two materials are not completely without intersection. So today we share with you the substantive difference between TPE and PVC materials, how to distinguish between TPE and PVC materials, and follow my footsteps to see ...
TPE, full name Thermo-plastelastomer. Chinese term for thermoplastic elastomer. PVC, full name Polyvinylchloide, Chinese meaning PVC.
TPE can be regarded as a general term for all thermoplastic elastomers in a broad sense, including SBCs(SEBS, SBS, SIS, SEEPS) and their mixed modified elastomers TPES(TPR), TPU, TPV, TPAE, TPEE, TPEE, TPVC and other types of thermoplastic elastomer materials. Among them, TPVC is actually a soft PVC and belongs to the category of PVC. But at the same time, it has elastic characteristics and belongs to the TPE category of thermoplastic elastomers. (TPE, PVC relationship diagram is as follows) General hard PVC is used to make plastic floors, semi-hard PVC is used to process pipes, and soft PVC(ie TPVC) is used to process cables, toys and other products.
Soft PVC, by adding plasticizers to PVC to reduce the hardness of PVC, strengthen its elastic characteristics. In this way, the PVC with elastic properties added to the plasticizer is divided into the generalized TPE(thermoplastic elastomer category). Similar to TPE's extensive hardness range, soft PVC is a material with different soft hardness by controlling the amount of plasticizer added. In addition, the appearance of the material is a soft texture of granule, all transparent and solid color.
Differentiation(Performance control analysis)
Since TPE is most widely used based on SEBS, SBS modified TPES materials, but in fact it is also commonly referred to as TPE, the TPE mentioned below in this article refers to such TPE materials unless otherwise specified; The PVC mentioned below refers to TPVC.
1, rebound
TPE's resilience is better than that of PVC. For example, the thickness of the sheet material is usually soft and hard. After the external force is removed, the TPE sheet material is better than PVC.
2, texture
Although both TPE and PVC have a soft touch. However, TPE has a more flexible touch of rubber. The TPE is less elastic and the touch is softer.
3, specific gravity
TPE specific gravity 0.83 ~ 1.4; PVC ratio 1.2 ~ 1.4.
4, hardness
The hardness of TPE10 ~ 95A, PVC110 ~ 20P.TPE is usually represented by Shaw's hardness A(special hardness is measured by OO and D), and PVC hardness is usually expressed as the amount of plasticizer content. The hardness unit is P. It should be noted that the larger the TPE hardness value, the harder the material, and the greater the PVC hardness value, the softer the material.
5, solvent resistance
The performance of PVC acid-base resistance is better than that of TPE, but neither material is resistant to polar solvents such as gasoline and toluene.
6, aging resistance
Both materials have general properties and special requirements need to be modified.
7, flame retardant
PVC flammability is better than TPE.PVC, UL94-V2; TPE, UL94-BB. Except, of course, materials subject to flame retardant modification.
8, temperature resistance
TPE temperature resistance -50 ~ 90 °C(certain types of TPE, temperature resistance 150 °C); PVC temperature resistance -10 ~ 80 °C. TPE is better than PVC in cold resistance and high temperature resistance.
9, processing performance
All can adopt injection molding, extrude, blow molding. However, PVC can be molded, this point TPE is far from the dust, and for the drip glue, blowing molding process, PVC is even more pure, TPE will only be a point. PVC liquidity is better than TPE, and its shape is better. PVC easily corrodes the screw, and TPE does not corrode the screw.
10, forming temperature(reference)
PVC injection molding: 110 ~ 180 °C; PVC extrusion: 110 ~ 140 °C
TPE injection molding: 130 ~ 250 °C; TPE Extrusion: 120 ~ 210 °C
11, inclusive
Covering is a relatively high-end application of thermoplastic elastomers. PVC is rarely used for coating, and it is generally well coated with plastics such as ABS, TPEE, and TPU. As an environmentally friendly material, TPE can be bonded with various plastics such as ABS, AS, PA, PBT, PC, PC + ABS, PCTG, PP, PS, and TRITAN through the adjustment of the mixing system.
12, shrinkage
PVC 0.6 ~ 1.2 %; TPE 1.3 ~ 2.5 %. PVC shrink less than TPE, better shape.
13, environmental characteristics
TPE: Excluding PAHS, PAES, NP, POFA, BPA, in line with ROHS, REACH(SVHC), EN71-3, EN 1935/2004. PVC: According to the use can be divided into ROHS environmental protection level and RACH(SHVC) environmental protection level two.
14, combustion identification
TPE aromatic smell, yellow blue on the flame, fire source away from renewal. The odor of PVC chlorine, the flame yellow under the green, the source of fire left to extinguish.
Looking at the above comparison of TPE and PVC 14, do you already know the difference between TPE and PVC materials? In short, there is no good or bad material in the plastics industry. Each material has its own specialty and application area. Let's just say that your product is more suitable for which material. When your new product development is tangled between TPE and PVC, The appropriate consulting professionals for you to analyze the TPE and PVC materials that is more suitable for your products, more TPE material performance please call for advice!
(edit：dechuang)
