Ethylene propylene rɔba (EPR), a ethylene propylene rɔba abien ne ethylene propylene rubber a ɛwɔ afã abien (EPDM) ka ho no yɛ rɔba a ɛyɛ saturated, a anyinam ahoɔden a ɛyɛ fɛ, nsu a ɛyɛ nwini, ɔhyew ne onyin a ɛko tia, a wɔde di dwuma kɛse wɔ nhama ne nhama a wɔde si nhama ananmu no mu kɛse. Esiane sɛ nneɛma a atwa yɛn ho ahyia no ho ahwehwɛde a ɛkɔ soro kɛse nti, wɔreyɛ waya ne nhama a ɛbɛma ogya a ano yɛ den a wusiw a wonni halogen a ɛwɔ halogen mu no ano abrɛ ase, a polyethylene a ɛwɔ cross-linked polyethylene a ɛwɔ nhyɛso a ɛba fam no ara no, EPR nso yɛ nneɛma a ɛyɛ hyew no dea, n’ankasa molecule ahorow ne ne nhyehyɛe a ɛwɔ ogyaframa no mu no yɛ nea ɛfata sɛ ogyaframa no yɛ nea ɛfata sɛ ogyaframa no yɛ nea ɛfata sɛ ogyaframa no ma ɛyɛ den sɛ ɛbɛma ne ho atɔ no. Wobetumi de nneɛma a ɛmma wusiw a ɛba fam a ogya ntumi nhyew no nka nneɛma a ogya ntumi nhyew a halogen nnim no nkutoo ho. Nhwehwɛmu ada no adi sɛ anyinam ahoɔden a ɛwɔ EPDM mu no nya nkɛntɛnso kɛse wɔ ogya a ɛrehyew no so, fa hydroxide ogyaframa no afã 80 ka ho kɛkɛ no bɛma anyinam ahoɔden a ɛko tia no so atew ntɛmntɛm, sɛnea ɛbɛyɛ a wobenya IEC 60502 ((wɔakyerɛw ahoɔden a ɛyɛ ~ 30 kV a wɔde pue a wɔabɔ ho ban afi rubr no ho a wɔde ma wɔ ɔkwan a wɔfa so yɛ adwuma no mu wɔ ɔkwan a wɔfa so yɛ adwuma no mu wɔ ɔkwan a wɔfa so yɛ adwuma no mu wɔ ɔkwan a wɔfa so yɛ adwuma no mu wɔ ɔkwan a wɔfa so yɛ adwuma no mu wɔ ɔkwan a wɔfa so yɛ no mu wɔ ɔkwan a wɔfa so yɛ adwuma no mu wɔ ɔkwan a wɔfa so yɛ adwuma no mu 3.67 MΩ -km ne volume resistivity ≥ 3.67 MΩ -km ne volume resistivity ≥ 3.67 MΩ -km ne volume resistivity ≥ 3.67 MΩ -km ne volume resistivity ≥ 1 × 1012 × Ɔhyew ho sɔhwɛ, ɛyɛ den kɛse wɔ hɔ. Nhwehwɛmu ne nkɔso a ɛfa akwan foforo a wɔfa so yɛ nneɛma ho no, ɛyɛ yiye sɛ wobedi atifi hɔ ahwehwɛde ahorow no ho dwuma.
1 Nkɛntɛnso a ogyaframa a ɛmma ogya ntumi nhyew a ɛnyɛ nea ɛyɛ hyew no nya wɔ sɛnea ogya a ano yɛ den a enni halogen a ɛba fam a ɛmma ogya ntumi nhyew EPDM a ɛmma ogya ntumi nkɔ mu no adwumayɛ so .
Nneɛma a ɛma EPDM a ɛbɔ ho ban a ɛwɔ magnesium hydroxide mu no yɛ den sen biara no yɛ nea ɛsõ sen biara, titiriw esiane nokwasɛm a ɛyɛ sɛ .
Magnesium hydroxide yɛ ahwehwɛ a ɛte sɛ ade, nneɛma nketenkete no kɛse nnu 2μm, na ɛdenam silane a ɛka bom no a wɔsakra no so ma tumi a ɛkyekyere ne magnesium hydroxide ne EPDM hyia no yɛ kɛse. Ɛdenam oxygen index ne vertical combustion grade a wɔde toto ho so no, yebetumi ahu sɛ ogya a ɛtɔ gu magnesium hydroxide so no tumi yɛ papa kɛse sen nea ɛwɔ aluminum hydroxide mu no, eyi fi ɔhyew a ɛporɔw a ɛwɔ magnesium hydroxide mu no yɛ kɛse sen nea ɛwɔ aluminum hydroxide no mu denam 140 °C so, a ɛma nsu a ɛwɔ hɔ no yɛ kɛse esiane sɛ nsu no yɛ kɛse a, ɛma nsu no yɛ kɛse esiane sɛ ɛyɛ adwuma nti, ɛma nsu no yɛ hyew kɛse wɔ ɔkwan a ɛkɔ soro no so wɔ ɔkwan a ɛkɔ soro no so wɔ ɔkwan a ɛkɔ soro no so wɔ ɔkwan a ɛkɔ soro no so wɔ ɔkwan a ɛkɔ soro no so wɔ ɔkwan a ɛma nsu no yɛ kɛse no so wɔ ɔkwan a ɛkɔ soro no so. Film a wɔde asisi ade a wɔde nkata so no ani wɔ nsu a ɛho ayɛ fĩ akyi na ɛhyɛ fango a wɔbɛyɛ no ho nkuran, a ɛbɛyɛ abon a ɛyɛ den wɔ ade a ɛbata ho no ani de aka ho, bere a nsu a ɛwɔ mu akyi no, magnesium hydroxide bɛyɛ oxidized film a ɛyɛ rɔba a wɔde adsorbed ayɛ no rɔba wɔ rɔba no ani so, na ɛma nneɛma a ɛyɛ den no yɛ kɛse, ɛma ɛyɛ den, ɛma ɛyɛ den sɛ wɔbɛma nsu no ayɛ kɛse sestɛm. Wobetumi de atoto volume resistivity ho, aluminum hydroxide a ɛwɔ EPDM insulation rɔba ethylene propylene rubber (EPR) so, a ethylene propylene rubberne rubberne rubber a ɛwɔ abien ne ethylene propylene rubber (EPDM) akuw abien ka ho, yɛ rɔba a ɛyɛ ma, a ɛyɛ anyinam ahoɔden a ɛyɛ fɛ a wɔde di dwuma, a wɔde wɔn ho ahyɛ mu a wɔde wɔn ho ahyɛ mu, ɔhyew, na wɔde wɔn ho ahyɛ mu, na wɔde wɔn ho ahyɛ mu, na wɔde wɔn ho ahyɛ mu, na wɔde wɔn ho ahyɛ mu, na wɔde wɔn ho ahyɛ nsu mu, na wɔde wɔn ho ahyɛ mu, na wɔde wɔn ho ahyɛ mu Nipadua a ɛyɛ styrene-butadiene rɔba sɛ cable insulation ade. Esiane sɛ nneɛma a atwa yɛn ho ahyia no ho ahwehwɛde a ɛkɔ soro kɛse nti, wɔreyɛ waya ne nhama a ɛbɛma ogya a ano yɛ den a wusiw a wonni halogen a ɛwɔ halogen mu no ano abrɛ ase, a polyethylene a ɛwɔ cross-linked polyethylene a ɛwɔ nhyɛso a ɛba fam no ara no, EPR nso yɛ nneɛma a ɛyɛ hyew no dea, n’ankasa molecule ahorow ne ne nhyehyɛe a ɛwɔ ogyaframa no mu no yɛ nea ɛfata sɛ ogyaframa no yɛ nea ɛfata sɛ ogyaframa no yɛ nea ɛfata sɛ ogyaframa no ma ɛyɛ den sɛ ɛbɛma ne ho atɔ no. Wobetumi de nneɛma a ɛmma wusiw a ɛba fam a ogya ntumi nhyew no nka nneɛma a ogya ntumi nhyew a halogen nnim no nkutoo ho. Nhwehwɛmu ada no adi sɛ anyinam ahoɔden a ɛwɔ EPDM mu no nya nkɛntɛnso kɛse wɔ ogya a ɛrehyew no so, fa hydroxide ogyaframa no afã 80 ka ho kɛkɛ no bɛma anyinam ahoɔden a ɛko tia no so atew ntɛmntɛm, sɛnea ɛbɛyɛ a wobenya IEC 60502 ((wɔakyerɛw ahoɔden a ɛyɛ ~ 30 kV a wɔde pue a wɔabɔ ho ban afi rubr no ho a wɔde ma wɔ ɔkwan a wɔfa so yɛ adwuma no mu wɔ ɔkwan a wɔfa so yɛ adwuma no mu wɔ ɔkwan a wɔfa so yɛ adwuma no mu wɔ ɔkwan a wɔfa so yɛ adwuma no mu wɔ ɔkwan a wɔfa so yɛ adwuma no mu wɔ ɔkwan a wɔfa so yɛ no mu wɔ ɔkwan a wɔfa so yɛ adwuma no mu wɔ ɔkwan a wɔfa so yɛ adwuma no mu 3.67 MΩ -km ne volume resistivity ≥ 3.67 MΩ -km ne volume resistivity ≥ 3.67 MΩ -km ne volume resistivity ≥ 3.67 MΩ -km ne volume resistivity ≥ 1 × 1012 × Ɔhyew ho sɔhwɛ, ɛyɛ den kɛse wɔ hɔ. Nhwehwɛmu ne nkɔso a ɛfa akwan foforo a wɔfa so yɛ nneɛma ho no, ɛyɛ yiye sɛ wobedi atifi hɔ ahwehwɛde ahorow no ho dwuma.
1. Nkɛntɛnso a ogyaframa a ɛmma ogya ntumi nhyew a ɛnyɛ nea ɛyɛ hyew no nya wɔ sɛnea wusiw a ɛba fam halogen-free retardant EPDM insulation rɔba nneɛma no yɛ adwuma no so .
Tensile ahoɔden a EPDM insulating adhesive ade a magnesium hydroxide yɛ kɛse, titiriw esiane nokwasɛm a ɛyɛ sɛ magnesium hydroxide yɛ ade-te sɛ crystalline, particle size less than 2μm, na ɛdenam nsakrae a silane coupling agent ma a ɛkyekyere tumi ne compatibility magnesium hydroxide ne EPDM. Ɛdenam oxygen index ne vertical combustion grade a wɔde toto ho so no, yebetumi ahu sɛ ogya a ɛtɔ gu magnesium hydroxide so no tumi yɛ papa kɛse sen nea ɛwɔ aluminum hydroxide mu no, eyi fi ɔhyew a ɛporɔw a ɛwɔ magnesium hydroxide mu no yɛ kɛse sen nea ɛwɔ aluminum hydroxide no mu denam 140 °C so, a ɛma nsu a ɛwɔ hɔ no yɛ kɛse esiane sɛ nsu no yɛ kɛse a, ɛma nsu no yɛ kɛse esiane sɛ ɛyɛ adwuma nti, ɛma nsu no yɛ hyew kɛse wɔ ɔkwan a ɛkɔ soro no so wɔ ɔkwan a ɛkɔ soro no so wɔ ɔkwan a ɛkɔ soro no so wɔ ɔkwan a ɛkɔ soro no so wɔ ɔkwan a ɛkɔ soro no so wɔ ɔkwan a ɛkɔ soro no so wɔ ɔkwan a ɛma nsu no yɛ kɛse no so wɔ ɔkwan a ɛkɔ soro no so. Film a wɔde asisi ade a wɔde nkata so no ani wɔ nsu a ɛho ayɛ fĩ akyi na ɛhyɛ fango a wɔbɛyɛ no ho nkuran, a ɛbɛyɛ abon a ɛyɛ den wɔ ade a ɛbata ho no ani de aka ho, bere a nsu a ɛwɔ mu akyi no, magnesium hydroxide bɛyɛ oxidized film a ɛyɛ rɔba a wɔde adsorbed ayɛ no rɔba wɔ rɔba no ani so, na ɛma nneɛma a ɛyɛ den no yɛ kɛse, ɛma ɛyɛ den, ɛma ɛyɛ den sɛ wɔbɛma nsu no ayɛ kɛse sestɛm. Wobetumi de ntotoho a ɛfa volume resistivity ho no aba awiei, aluminum hydroxide a ɛwɔ EPDM insulation rubber material electrical insulation adwumayɛ so no yɛ ketewaa koraa sen magnesium hydroxide, eyi te saa efisɛ ath 104E conductivity no ntra 60 ps-cm ~; ne magnesium hydroxide a ɛyɛ mmerɛw, te sɛ ɔkwan a wɔfa so yɛ ore no ahorow ahorow no, esiane ofie fibea a ɛma wotu fagude, efĩ a ɛkɔ soro, ahotew a ɛba fam, a ɛka ne soro ho a ɛwɔ ahoɔden pa, polarity a ɛkorɔn, microscopic mu nhyɛso, sɛnea ɛbɛyɛ a conductivity no bɛyɛ 250 ps-cm. 1 anaa nea ɛboro saa no, magnesium hydroxide dodow bi a wɔde bɛka EPDM rɔba ade no ho no bɛma rɔba ade no su a ɛbɔ ho ban no so atew kɛse, ɛwom sɛ magnesium hydroxide akyi nsakrae titiriw bi a wɔbɛyɛ wɔ soro akyi no betumi ama rɔba nneɛma no su a ɛma mframa no ano hye no atu mpɔn de, nanso nea efi mu ba no da so ara nyɛ nea eye de. Sɛ yɛhwɛ magnesium hydroxide dodow koro no ara a ɛwɔ ogya a ɛtɔ gu fam no su pa sen aluminum hydroxide a, yɛn ne magnesium hydroxide a wɔyɛ no bom yɛ magnesium hydroxide no honam fam nsɛnkyerɛnne no yiye, nneɛma ahorow a ɛsakra wɔ soro ne akwan a wɔfa so yɛ no, ne nea ɛkeka ho, na ɛyɛ magnesium hydroxide ahorow abien a ɛfata ma epdm a wɔde yɛ epdm a ɛde ba no yɛ nea wɔde adhesgulay a ɛde ba no.
MH3005 ne MH3005Z EPDM insulating rubber wɔ high volume resistivity, a insulating core a wɔde MH3005Z rɔba ayɛ no titiriw no di IEC 60502 ahwehwɛde ahorow ho dwuma, nanso MH3005 rɔba no su ahorow no yɛ kɛse. Nanso, insulation adwumayɛ a core a wɔde MH3005 rɔba ayɛ no sua koraa, na wobu akontaa sɛ core no ani nhyehyɛe sɛee wɔ extrusion vulcanization nhyehyɛe no mu, na ɛsɛ sɛ wɔhwehwɛ nea enti a ɛte saa no mu kɔ akyiri.
Sɛ yɛka ne nyinaa bom a, sɛ wɔde toto EPDM insulation rɔba a ɛwɔ magnesium hydroxide a wɔasesa no nkutoo ne EPDM insulation rɔba a aluminum hydroxide nkutoo wom ho a, kan no wɔ ogya a ɛyɛ papa a ɛma ogya no ano yɛ den, ahoɔden a ɛkɔ soro a ɛma ɛyɛ den, ne agyapade a ɛyɛ papa a ɛma nsu no ani yɛ den wɔ asase ani nsakrae titiriw akyi, nanso asiane da so ara wɔ hɔ sɛ asiane a ɛwɔ hɔ sɛ ɛbɛsɛe no a ɛmma nsu ntumi nkɔ mu wɔ nhama a ɛma nsu no yɛ hyew no mu, bere a aluminium ahorow no betumi ayɛ nea ɛbɛma nsu no ayɛ hyew no.
2. Nkɛntɛnso a ogyaframa a ɛnyɛ nkwaboaa a ɛmma ogya ntumi nhyew no nya wɔ Smoke a ɛba fam, a halogen-free retardant EPDM insulating adhesives yɛ so .
Magnesium hydroxide anaa aluminum hydroxide a ɛnyɛ nkwaboaa a ɛnyɛ hyew a wɔde di dwuma pɛnkoro no ntumi nni nea wɔhwehwɛ wɔ anyinam ahoɔden ne ogya a ɛrehyew no ho no ho dwuma bere koro mu, enti aluminum hydroxide ne magnesium hydroxide ne ne nkɛntɛnso wɔ adwumayɛ a ɛfa low-smoke halogen-free flame-retardant epdm part Nkɔanim wɔ MH3005Z dodow mu, menni viscosity ne tensile ahoɔden a ɛwɔ EPDM insulating adhesive no kɔɔ soro, ogya a ɛrehyew no su kɔɔ soro, volume resistivity so tew. MH3005Z a ɛkɔ soro no, menni viscosity ne tensile ahoɔden a ɛwɔ EPDM insulating adhesive mu no kɔ soro, ogya a ɛmma ogya ntumi nhyew no kɔ soro, na volume resistivity no so tew. Sɛ ATH 104E/MH3005Z ratio yɛ 90/30 a, EPDM insulating adhesive no su a ɛmma mframa nkɔ mu ne nea ɛmma ogya ntumi nhyew no di ahwehwɛde ahorow no so. Ath 104E / MH3005Z a wɔde toto ho ne 110 / 10 ne 120 / lo nsɛm abien, ɛwom sɛ wɔama ATH 104E afã horow 10 a ɛkɔ soro wɔ EPDM insulation adhesive flame retardant properties akyi no atu mpɔn de, nanso honam fam su ahorow a ɛwɔ hɔ a ɛma ɛkɔ fam ntɛmntɛm no. Lath 104E / MH3005Z ne ratio 70 / 50 ne 70 / 40 abien, tew 10 afã horow MH3005Z ɛwom sɛ ebetumi ama insulation su a rɔba no su, nanso ogyaframa retardant ahoɔden ntumi nni ahwehwɛde ahorow no. Sɛnea ɛbɛyɛ a wobetumi ahwɛ ahu sɛ ogyaframa a ɛmma ogya ntumi nhyew no, wontumi ntew ogya a ɛrehyew no nyinaa so.
EPDM insulation rɔba ade a ogyaframa nni mu wusiw dodow yɛ 355 anaa nea ɛte saa, a ogyaframa a enni nkwa mu a ɛmma ogya ntumi nhyew no dodow ne abusuabɔ a ɛda adi pefee ne ratio no, eyi te saa esiane nneɛma nyinaa a wɔde yɛ no nti, wusiw a ɛba no yɛ EPDM titiriw, ɛwom sɛ ogyaframa a ɛmma ogya ntumi nhyew no a, ebetumi ama ogya a ɛrehyew no atu mpɔn, na mmom ebetumi ama wusiw a efi mu ba no, nanso ɛmma wusiw no mma wusiw no so.
3. Aduru a ɛtew wusiw so wɔ sɛnea wusiw a ano yɛ den a ɛmma wusiw nni mu no yɛ adwuma wɔ EPDM aduru a ɛmma ogya ntumi nhyew no ho .
JB / T 10707 - 2007 'thermoplastic halogen-free low-smoke retardant cable materials' hwehwɛ sɛ ɛsɛ sɛ wusiw a ogya ntumi nhyew a ɛwɔ rɔba nneɛma no mu no yɛ kɛse sen 250, sɛnea ɛbɛyɛ a ɛsɛ sɛ wɔde rɔba ade no wusiw a ɛyɛ den no ka wusiw a wɔde siw ano no ho. Montmorillonite kura calcium-based, sodium-based, magnesium-based Montmorillonite, bere a wɔayiyi na wɔapete, ahotew ne nsakrae, organic composite soronko, sɛ wɔkyekyem pɛpɛɛpɛ a, layer no mu duru nnu 25 nm. Wɔpaw Montmorillonite sɛnea ɛbɛyɛ a ebetumi anya wusiw nkɛntɛnso pa.
Montmorillonite a ɛwɔ EPDM insulation rɔba nneɛma wusiw dodow a ɛwɔ nkɛntɛnso no mu no da adi yiye, nanso ebetumi ayɛ nkɔanim ketewaa bi wɔ ogya a ɛmma ogya ntumi nhyew mu, bere a nneɛma afoforo nni nkɛntɛnso kɛse; Bere a Montmorillonite dodow a ɛkɔ soro no, EPDM insulation rɔba nneɛma wusiw dodow so tew nkakrankakra, na ɛtaa yɛ nea ɛyɛ den, sɛ wususuw nneɛma a ɛho ka ho no ho a, paw Montmorillonite dodow a ɛwɔ afã 5.
4 Nsɛm a wɔde wie .
(1) Wɔ EPDM a ɛmma ogya ntumi nhyew a ɛmma wusiw a ɛba fam a halogen nnim no mu no, tumi a ɛma ahoɔden a ɛwɔ magnesium hydroxide a wɔayɛ no foforo a ɛwɔ dodow koro no ara mu no yɛ papa sen aluminum hydroxide no, nanso magnesium hydroxide wɔ nkɛntɛnso kɛse wɔ anyinam ahoɔden a ɛma anyinam ahoɔden no so.
(2) Aluminium hydroxide ne magnesium hydroxide na ɛwɔ 90 / 30, wusiw a ɛba fam ne ogya a ɛmma ogya ntumi nhyew EPDM a ɛmma mframa ntumi nkɔ mu no wɔ nneɛma pa a ɛma ogya ntumi nhyew ne nneɛma a ɛma ogya ntumi nhyew.
(3) Montmorillonite a wɔde di dwuma no betumi atew wusiw a ɛwɔ ePDM a ɛmma mogya ntumi nkɔ mu a wusiw nni mu no so yiye, nanso bere a ne dodow a ɛwɔ mu no kɔ soro no, wusiw a ɛwɔ ade a wɔde kyekyere no mu no so tew nkakrankakra, na Montmorillonite dodow a eye sen biara no yɛ afã 5.
