Sei Fiberglass Thermal Shrinkage Inobata PTFE Tape Dimensional Kugadzikana

A PTFE tepi inodzikira, curls, kana warps panguva yekushandiswa kwakajairika munda kutadza. Iyo midzi inokonzeresa kazhinji inoteedzera kumashure kune imwe paramende: thermal shrinkage rate ye fiberglass substrate..

Munguva yePTFE sintering pa360-400 ° C uye inonamira kurapa pa150-200 ° C, iyo Fiberglass jira rinowedzera kupisa uye, zvakanyanya kutsoropodza, isingadzokeke shrinkage kubva kune yakasara kuruka kunetseka. Kana kushushikana uku kusati kwabviswa kusati kwaputirwa, kunova kukanganisa kwakavanzika - zvichiita kuti tepi iwedzere, kupeta, kana delaminate kana inopisa.

Aokai PTFE inoshandisa zvizere kupisa-set fiberglass substrates kubvisa dambudziko iri. Ichi chinyorwa chinotsanangura chinokonzera kupisa kwemafuta, maitiro ayo pane imwe neimwe nhanho yekugadzirisa, uye core solution: pre-heat-set jira rine <0.5% shrinkage pa400 ° C.

Root Cause – Residual Stress from Weaving

Thermal shrinkage inotangira kubva mukati yakasara kusagadzikana kwakaunganidzwa panguva yegirazi fiber kudhirowa uye machira ekuruka. Fiberglass jira risina kupisa kwakazara kugadzika rinopinda kusinga gadzirise shrinkage kana yapiswa pamusoro pekushushikana kwayo kuburitsa chikumbaridzo (kunoshamisa kuderera kunotanga pamusoro pe300 ° C).

Chero chipi zvacho chisina kukwana chakaburitswa kana kusingadzoreki shrinkage kushushikana inova musimboti wakavanzika dambudziko rinokonzera kusagadzikana tepi zviyero. Kushushikana uku 'kuvharirwa' mukati mechimiro chejira panguva yekurukwa uye inongoburitswa kana yapiswa kusvika kune tembiricha yakakwana.

Impact Panguva yePTFE Sintering - Iyo Yakakosha Stage

PTFE sintering tembiricha inosvika 360-400 ° C, ichipfuura zvakanyanya tembiricha yekutanga yefiberglass thermal shrinkage, zvichiita kuti nhanho iyi ive chinhu chakakosha chekuita kwedimensional.

1. Yakakiyiwa shrinkage stress inogadzira latent dimensional defects

Kana rikagadziriswa pasi pekunetseka kwakaderera, jira refiberglass rinodzikira zvakasununguka uye zvakanyanya, zvichikonzera kureba uye hupamhi husingaenzaniswi. Kana tension yakawandisa ikaiswa kudzora shrinkage, girazi fibers inorebeswa nechisimba. Panenge pa380 ° C, PTFE yakanyungudutswa inopinda uye inoputira tambo dzakatambanudzwa; mushure mekutonhora uye kuumbwa, iyo yakadzikama shrinkage tendency inovharika zvachose mukati me substrate seyakakura yakasara tensile kusagadzikana. Kana tepi ichinge yadzoserwa mune inotevera maitiro, iyi yakasara kushushikana inokonzeresa shrinkage ye substrate uye inoparadza zvakananga kugadzikana kwedimensional.

2. Kusaenzana kwe substrate flatness kunoderedza coating uniform

Kusapindirana kwemafuta kuderera munzvimbo dzakasiyana dzemachira (semuenzaniso, mupendero uchipikisana nepakati penzvimbo) panguva yekupisa inokonzeresa deformation inosanganisira wavy edge, micheto yakavharwa, uye maburi epamusoro . Iyo isina kuenzana substrate pamusoro inotungamira kune isina kuenzana yekunamira yekunamira ukobvu mune dzinotevera maitiro, ichikonzera nyore mabhuru emhepo kana kusanamira kwakashata panguva yelamination, uye zvisina kunanga kushata kwese kwese uye kushanda kugadzikana kwematepi apera.

Impact Panguva Yekunamatira Kurapa - Sekondari Stress Relief

Adhesive systems (silicone pressure-sensitive adhesives, acrylic adhesives, nezvimwewo) inorapa pa150-200°C. Iyi tembiricha yakadzikira pane sintering renji asi yakakwana kumisa yasara yakakiyiwa kushushikana mukati me substrate, zvichiunza akawanda akashata mhedzisiro.

1. Sekondari shrinkage inokonzera kuremara kwepamusoro uye dimensional kutsauka

Kana uchipinda muovheni inorapa, yakasara shrinkage kushushikana mukati me substrate inoburitsa uye inokonzera kuyerwa tepi shrinkage. Izvi zvinotungamirira ku:

• Kuderera kwehupamhi hwakawandisa

• Micro-cracks, orenji peel mavara, kana kutadza kwakabatana pane inonamira pamusoro (sezvo shrinkage inoitika panguva imwe chete nekurapa)

• Longitudinal kuchinjika mukunamira ukobvu uye kuunyana kwekuburitsa liner (nekuda kwekusawirirana pakati pejira shrinkage kumhanya uye coating roller linear velocity)

2. Thermal curling inobvisa kugadzirisa kurongeka

Iyo substrate layer inobata zvibvumirano pasi pekupisa kwakasara kushushikana, nepo iyo yakazara yakaporeswa yekunamatira layer ine yakasiyana coefficient yekuwedzera kwekupisa, ichigadzira kushushikana kwakanyanya kusawirirana pakati pezvikamu zviviri. Iyo tepi inokwenenzverwa nekukasira kana yakasvunurwa kubva kune yekuburitsa liner kana kufumurwa kupisa panguva yekushandiswa - kutadza kuisa flat uye kurasikirwa nedimensional controllability uye kushanda.

Kuramba Kushungurudzika Kusunungurwa Panguva Yekupedzisira-Kushandisa - Kusagadzikana Kwenguva Yakareba

Residual shrinkage stress isina kubviswa zvizere panguva yekunamira kurapa inoenderera mukupedza chigadzirwa application. Pasi pepamusoro-kupisa masking, thermal lamination, kana thermal cycling mamiriro (eg, 260 ° C poda coating), tepi inoderera zvishoma nezvishoma uye ichienderera.

Migumisiro

• Shifted masking miganhu (chisimbiso mitsetse inofamba)

• Kusimudza Edge kana kutadza kunamatira

• Kurasikirwa kwakakwana kwekugadzikana kwedimensional

Ichi ndicho chikonzero mamwe matepi anokundikana mumunda kunyange mushure mokupfuura kuongorora kwekutanga - kushushikana kwakadzikama kunobudiswa zvishoma nezvishoma nekufamba kwenguva uye kupisa.

Core Solution - Bvisa Shrinkage Usati Waita Sintering

Kugadzira akagadzikana akagadzikana PTFE adhesive tepi, kumanikidzwa kusimba kutambanudza panguva yekugadziriswa hakugone kugadzirisa nyaya dzekuderera zvakanyanya. Kubviswa kwakazara kwefiberglass shrinkage kunofanirwa kuwanikwa pane sosi.

1. Nzira yeAokai PTFE

1. Shandisa zvizere kupisa-kuseta (pre-shrunk) fiberglass base jira - thermal shrinkage rate inodzorwa zvakanyanya pazasi 0.5% pasi pekuedzwa mamiriro e400 ° C × 10 maminetsi (yakasimba miyero inowanikwa kune ekutanga mamakisi).

2. Wedzera yakakwira-tembiricha pre-firing maitiro pamberi pePTFE impregnation kana kupfekedza - kubvumira jira refiberglass kupedzisa shrinkage yemahara uye kuburitsa zvizere kushushikana kwemukati kusati kwapinda munzvimbo yekupisa.

2. Mhedzisiro

Kana iyo yefiberglass yejira yekupisa yekudziya shrinkage yakadzikisirwa, misiyano yemativi panguva inotevera sintering uye inonamira kurapa inongobva pakuwedzera kwekupisa uye kudhonzwa kweresin uye anonamira akaturikidzana - nehukuru hudiki kwazvo pane yasara yekushushikana-inotyairwa shrinkage. Izvi zvinosimbisa:

• Dimensional kugadzikana (kureba uye upamhi)

• Surface flatness

• Kupisa kupisa uye kuvimbika kwenguva refu

Aokai PTFE inosarudza chete kupisa-seta fiberglass substrates ine yakanyorwa shrinkage rates. Tinogona kupa bvunzo data pane zvinodiwa nevatengi.

Pfupiso – The Pre-Shrinkage Principle

Aokai PTFE inokurudzira pre-heat-set fiberglass ine shrinkage <0.5% kune ese ma dimension-akakosha maapplication. Kune vatengi vanoda zvimiro zvakatsiga, tinopa mamakisi ekutanga ane shrinkage <0.3% pa400°C.

Izvi zvehunyanzvi zvemukati zvinopihwa ne Jiangsu Aokai New Material Technology Co., Ltd.

Kana iwe uchida kutsanangurwa kwakadzama, mamiriro ekushandisa uye zvigadziriso zvakagadziridzwa zvechigadzirwa chedu chizere mutsara zvinosanganisira PTFE yakakwirira-tembiricha machira, PTFE yakakwirira-tembiricha adhesive matepi, PTFE mesh mabhandi ekutakurisa, seamless fusing muchina mabhandi, single-sided PTFE yakafukidzwa jira, kupisa-inodzivirira inodzivirira girazi, ndapota taura nesu. chiteshi pazasi:

• VaGuo: +86 18944819998

• Mr. Liu: +86 13705266308

Isu tinosimudzira masevhisi ehunyanzvi uye kutendeseka, yakatsaurirwa kukupa iwe zvese-mu-imwe zvakagadziridzwa mhinduro uye nehanya mushure-kutengesa rutsigiro!