Misiyano pakati peNeutral Silicone Sealant uye Medium Silicone Structural Adhesive

I. Misiyano Pakuumbwa uye Kurapa Nzira
1. Neutral Silicone Sealant:

- Mushonga mukuru: hydroxyl-terminated polydimethylsiloxane. Inorapa nedealcoholization nekutora unyoro kubva kumhepo, ichigadzira elastomer inoshanduka pakurapa.

- Inorapa zvishoma nezvishoma (tack-nguva yemahara ingangoita 30-60 maminetsi, kupora kunotora maawa 24-72), zvichiita kuti zvikodzere zvirongwa zvinoda kuiswa patsva.

- Haina asidhi uye haiparadzi-kune masubstrates akaita sesimbi negirazi. pH yaro iri pedyo nekusarerekera (6.5-7.5).

2. Medium Silicone Structural Adhesive:

- Inowedzera masilane akagadziridzwa kana mapurasitiki kuti aite yakakwirira-modulus (elastic modulus Yakakura kupfuura kana kuenzana ne0.4 MPa) bondline pakupora. Zvimwe zvigadzirwa zvakasimbiswa kune ASTM C1184 standard.

- Kurapa nekukurumidza (tack-nguva yemahara 20-40 maminetsi) uye yakasimba bond simba (tensile simba Guru kupfuura kana kuenzana ne0.7 MPa, kureva GB 16776-2005), zvichiita kuti ive yakakodzera kune zvinotakura zvinhu.

II. Kuita uye Kuenzanisa Kwekushandisa
1. Mechanical Properties:

- Neutral silicone sealants inowanzova nesimba rekusimba re 0.5-1.0 MPa uye kureba kwe200% -300%, zvichiita kuti zvikodzere kuvhara majoini ane simba (senge mikaha pakati pemagonhi nemahwindo).

- Medium silicone structural adhesives kazhinji ane simba rekusimba rinodarika 1.0 MPa, nemamwe magiredhi epamusoro-ekusimba anosvika 1.5 MPa (seBaiyun SS622). Izvo zvakagadzirirwa zvakanangana nemaitiro ekubatanidza maapplication akaita segirazi keteni madziro uye akaoma-matombo anorembera.

2. Kuramba Kwemamiriro ekunze uye Tembiricha Range:

- Ose ari maUV-anoshingirira, asi anonamira epakati silikoni ane tembiricha yakareba-yetembiricha (-40 madhigirii kusvika 150 dhigirii , zvichienzaniswa ne -50 dhigirii kusvika 120 madhigirii ekunamira nesirikoni).

Neutral silicone adhesives inotarisa zvakanyanya pakudzivirira mvura uye mildew kuramba (zvichienderana neGB/T 14683-2017), nepo zvinonamira zvechimiro zvinofanirwa kupfuura seismic bvunzo (seJIS A5758).

3. Mashandisirwo Akajairika:

- Neutral silicone adhesives: Mumba yekugezera kudzivirira mvura uye kuvharika, kugadzira mataira, uye kuiswa chisimbiso chepombi.

- Medium silicone structural adhesives: High-yakakwira magirazi emadziro emadziro eketeni, kubatanidza furemu yesunroom, nekusimbisa shaft yeelevator.

III. Maitiro Okudzivirira
1. Usati washandisa neutral silicone adhesives, iyo substrate yepamusoro inofanira kucheneswa kuti irege kusvibiswa kwemafuta iyo inogona kukanganisa kunamatira. Zvigadzirwa zvekunamatira zvinoda substrate yakaoma uye kushandiswa kweprimer (somuenzaniso, aluminium inoda kurapwa kwakakosha).

2. Zvigadzirwa zvekunamatira zvinofanirwa kuongororwa kuenderana (zvichireva ASTM C1087) kudzivirira kuita kwemakemikari nezvinhu zvinosangana.

Kuenzanisa kwepamusoro kunoratidza kuti kunyangwe ese ari maviri ari organic silicone adhesives, dhizaini yavo yekugadzira uye zviratidzo zvekushanda zvinosiyana zvakanyanya. Vashandisi vanofanira kusarudza imwe zvichienderana nezvavanoda chaizvo.