Ɛtɔ mmere bi a, wɔn a wɔde di dwuma no betumi abisa bere tenten a wobetumi atwe aduru a wɔde ayɛ vulcanised no nkutoo a wɔrensɛe. Eyi yɛ ade foforo a ɛho hia wɔ stress-strain sɔhwɛ a ɛfa standard dumbbell specimens ho sɛnea ASTM ne ISO kyerɛ no. Protocol ahorow a edidi so yi betumi aboa formulators ma wɔadi nea ɔde di dwuma no ahiade ho dwuma.

1. SBR .

SBR polymerized denam emulsion so wɔ -10 °C sen sɛ ɛbɛyɛ 50 °C betumi ama compound no ayɛ yiye tensile elongation.

2. NR .

Wɔ NR ahorow ahorow no mu no, plasticized abɔde mu rɔba CV60 rɔba na ɛwɔ tensile elongation a ɛkorɔn sen biara.

3. Neoprene ne nea wɔde hyɛ mu .

Wɔ neoprene formulations mu no, ɛsɛ sɛ wɔde inorganic fillers a ɛwɔ particle size kɛse sen sɛ ɛbɛyɛ nketewa particle size di dwuma na ama tensile break no tenten atu mpɔn. Nea ɛka ho no, carbon black a wɔahyɛ no den anaasɛ ɛyɛ fã a wɔahyɛ no den a wɔde carbon black a ɛyɛ hyew besi ananmu no betumi ama tensile break no tenten atu mpɔn.

4. TPE ne TPV .

Thermoplastic elastomers ne thermoplastic vulcanizates taa yɛ anisotropic, titiriw ma injection molded elastomers wɔ shear rates a ɛkorɔn, baabi a tensile elongation ne tensile ahoɔden gyina ɔkwan a wɔfa so yɛ wɔn processing flow no so.

5. Carbon tuntum .

Carbon black a wɔde di dwuma a ɛwɔ soro pɔtee a ɛba fam ne nhyehyɛe a ɛba fam ne carbon black a wɔde hyɛ mu ma no so tew no betumi ama aduru no tenten ayɛ tenten.

6. Talcum powder .

Sɛ wode talc a ɛyɛ nketenkete a ɛyɛ nketenkete a ɛwɔ carbon black no si carbon black dodow koro no ara ananmu a, ebetumi ama tensile elongation a ɛwɔ compound no mu no atu mpɔn, nanso enni nkɛntɛnso kɛse biara wɔ tensile ahoɔden no so na ebetumi ama modulus no ayɛ kɛse wɔ ɔkwan a ɛba fam so.

7. Sulfur vulcanization .

Mfaso a ɛda nsow a ɛwɔ sulfur so sɛ wɔde toto peroxide vulcanization ho ne sɛ ebetumi ama rɔba ade no anya tensile elongation a ɛkorɔn. Mpɛn pii no, vulcanization nhyehyɛe a ɛyɛ sulfur a ɛwɔ ahoɔden kɛse no betumi ama aduru no atrɛw yiye sen vulcanization nhyehyɛe a ɛwɔ sulfur a ɛba fam no.

8. gel .

Mpɛn pii no, nneɛma a wɔde nkata so te sɛ SBR no kura nneɛma a ɛma ɛyɛ den. Nanso, SBR nnuru a wɔde frafra mu wɔ ɔhyew a ɛboro 163°C mu no betumi ama gel a ɛnyɛ den (a wobetumi abobɔw) ne gel a ɛyɛ ketewaa (a wontumi mmue na ɛnyɛ nea ɛtumi nwura mu wɔ nnuru bi mu). gel abien no nyinaa ma tensile elongation a ɛwɔ compound no mu no so tew, enti ɛsɛ sɛ wɔde ahwɛyiye di SBR no afrafra hyew no ho dwuma.

9. Nneɛma a wɔde frafra .

Compounding ma carbon black a ɛpete no tu mpɔn, na ɛboa ma compound no tenten yɛ tenten.

10. Nkɛntɛnso a molecule mu duru nya .

Wɔ NBR raw rɔba ho no, mooney a ɛba fam a wɔde di dwuma ne molecule mu duru a ɛba fam no betumi ama tensile break no ayɛ tenten. Emulsion SBR, dissolved SBR, BR ne IR nso fata ma eyi.

11. Vulcanization dodow .

Mpɛn pii no, vulcanization a ɛba fam no betumi ama aduru no atrɛw kɛse.