Yɛbɔ mmɔden wɔ nneɛma a ɛkorɔn-nneɛma a yɛde ma mu OEM ne ODMano aduru ma yɛn ahokafo, .

denam mfiridwuma a ɛyɛ foforo-a ɛyɛ adwuma ne nneɛma a wɔyɛ ho nimdeɛ a wotumi sesa so.

Ɛnhwehwɛ sɛ wɔmfa frafrae biara wɔ{0}}beae hɔ na ɛsa ma ɛyɛ rɔba a ɛyɛ den yiye-te sɛ ade a ɛyɛ den denam nsu a ɛtwetwe wɔ mframa mu no so. Urethane akuw a ɛwɔ ne molecule nhyehyɛe mu no ma ade no nya adhesiveness a ɛkyɛn so, wim tebea a ɛko tia, ne deformation tumi, na ɛma etumi yɛ elastic akwanside wɔ sealed nkwaa a ɛka nsuo a ɛmma, mframa a ɛmma, ne buffering dwumadie bom, a ɛfata ma substrates ahodoɔ ne complex environments.The sealing performance of one part polyurethane sealant is the issue that users are most concerned about. Ɛsɛ sɛ ɛyɛ nea nsu ntumi nkɔ mu na nsu ntumi nkɔ mu. Sɛ ɛsa wie a, ɛsɛ sɛ ɛyɛ elastomer a ɛkɔ so, a ɛnyɛ-porous a nsuo a ɛtwetwe no nnu 0.1%. Bere a wɔde redi dwuma no, ebetumi agyina nsu nhyɛso a ɛyɛ 0.5MPa ne mfe 10 nsu a ɛtwetwe a ennu 0.2L/min ano. Sɛnea ɛbɛyɛ a yɛbɛsakra de adi dwuma wɔ nnuruyɛ mu nsɛm ho amanneɛbɔ mu no, yɛhwehwɛ sɛ polyurethane sealant no fã biako no ntumi nnyina acid osu, nkyene a wɔde petepete ne pɛtro a ɛyɛ hyew ano, a afe afe dodow a ɛyera no nnu 0.5%. Wobetumi de adi dwuma pintinn wɔ acid a ɛyɛ mmerɛw ne alkalis ne nkyene mu, nanso ɛnyɛ nea ɛko tia acid ne alkalis a wɔahyɛ no den. Eyi yɛ biribi a ɛsɛ sɛ wɔde adwene si so.

Mfaso a ɛwɔ adwumayɛ mu mfaso a ɛwɔ polyurethane sealant a ɛyɛ ɔfã biako so no na ɛkyerɛ mmeae a wɔde di dwuma. Efi honam fam nneɛma so kosi sɛnea ɛyɛ mmerɛw sɛ wɔde bedi dwuma so no, ɛno nti na wɔde di dwuma kɛse:

Ahoɔden a ɛtwetwe: Ɛboro anaasɛ ɛne 2.5MPa yɛ pɛ;
Ntrɛwmu wɔ ahomegye bere mu: 450%-600%;
Wim tebea a ɛko tia: 85 digrii /95% RH nnɔnhwerew 1000;
Bere a wɔde sa yare: nnɔnhwerew 24-72 (25℃);

Mmerewa a ɛwɔ Baako-Component Design mu

Wobetumi de gluu tuo ayi afi mu tẽẽ ama adansi, na ɛho nhia sɛ wɔde nneɛma abien-frafra nneɛma a ɛwɔ mu no fi hɔ, na ɛtew nsaano mfomso so, na ɛma adansi no mu mmɔdenbɔ tu mpɔn (odwumayɛni biako betumi ayɛ nkwaa mita 30-50 da biara).

Wide Adhesion a Ɛtrɛw

Etumi bata nneɛma a ɛwɔ ase te sɛ dade, ahwehwɛ, kɔnkrit, ɔbo, ne plastic ho denneennen a enhia sɛ wɔde primer, a ahoɔden a ɛde bata ho no yɛ Kɛse sen anaasɛ ɛne 1.5MPa yɛ pɛ.

Form Plasticity a Wɔde Yɛ Nneɛma

Sɛ wosi wie a, wobetumi de nsa atwitwa no ayɛ no arc a ɛyɛ torotoro anaasɛ ɛyɛ tratraa, na ama nsɔano adwumayɛ ne afɛfɛde a ɛkari pɛ.

Wɔde polyurethane sealants a ɛyɛ ɔfã biako di dwuma titiriw wɔ adansi adwuma mu, na wɔde kata curtain wall joints ne ɔdan atifi a nsu ntumi nkɔ mu. Wɔ akwantuo adwuma mu no, so wobetumi de adi dwuma nso de ayɛ bridge expansion joints ne track deformation joints ho adwuma? Wɔ nneyɛe mu no, ɔfã biako polyurethane sealants dwumadie no nya nkɛntɛnsoɔ wɔ substrate, ambient temperature ne humidity, ne adansiɛ kwan no so. Bere a wɔde regu so no, ɛsɛ sɛ wɔma ɔfasu no yɛ nwunu na ama abata ho yiye.

Sɛnea ɛbɛyɛ a wobenya nsɔano a eye no, ɛho hia sɛ wodi ɔkwan a wɔahyɛ da ayɛ so bere a wode polyurethane aduru a wɔde siw ano fã biako redi dwuma no. Eyi titiriw ne sɛnea ɛbɛyɛ a wɔbɛhwɛ ma adhesive layer ne substrate no ntam ayɛ den na ayɛ curing pɛpɛɛpɛ, na wɔnam saayɛ so anya nsu a ɛmma nsu nkɔ mu yiye.

Ahoboa

Hwɛ sɛnea ɛhɔ yɛ nwini. Polyurethane sealant fã biako a wɔbɛsa no gyina mframa a ɛyɛ nwini so, na ɛka ahoɔhare a wɔde sa yare ne ne su. Nsuo a ɛyɛ nwini a ɛyɛ 50%-80% na ɛyɛ papa.

Sanding a wɔde yɛ adwuma

Titiriw bere a woresiesie nhama dedaw no, yi sealant dedaw biara na afei fa anhwea gu substrate no ani na ama oxide film a ɛwɔ soro no ne ade a wɔayi afi mu no so atew.

Ahotew a wɔyɛ

Fa ntama popa mfutuma biara a ɛwɔ soro no, afei fa ntama a wɔde ahyɛ ethanol mu popa no mpɛn 2-3 na ama ngo nkekae ne nsateaa nkyerɛwee afi hɔ.

Nsu a ɛyow

Sɛ wohohoro wie a, ma mframa a ɛwɔ fam no nyow anyɛ yiye koraa no simma 30, hwɛ hu sɛ nsu a ɛwɔ soro no Nnuru anaasɛ ɛne 8% yɛ pɛ.

Sɛ wode sealant no bɛhyɛ wo ho

Fa sealant no gu tuo no mu, pia tuo no plunger no ma ɛpia sealant kakraa bi fi mu, pam mframa biara fi hose no mu, na fa tuo no kɔ ahoɔhare a ɛkɔ so daa mu, na kɔ so kura ahoɔden a ɛyɛ pintinn mu na ama woahwɛ ahu sɛ sealant no hyɛ ɔkwan no mu ma ɛkɔ so na ɛyɛ pɛpɛɛpɛ, a nsonsonoe anaa baabiara nni mu.

Sculpting a ɛyɛ sealant layer no

Bere a polyurethane sealant a ɛwɔ ɔfã biako no da so ara yɛ nsu no, yɛ no sɛnea ɛbɛyɛ a ɛrensɛe were a wontumi nsiesie.