High{0}}density polyethylene (HDPE) board hpe, bungli galaw ai lam, gawgap ai lam, hte tsi hpaji ni hta, tsaw ai-}}} langai mi hku nna jai lang ai. Shi a grai kaja ai hkum hkrang hte chemical atsam marai ni hte galaw shapraw ai atsam ni a majaw, lamu ga law law hta ahkyak ai arung arai langai hku nna lata la mai ai. Ndai laika hta HDPE board a hpaji masa ni hpe jak rung atsam, tsi mawan ngang grin ai lam, grup yin hpe n-gun jaw ai lam ni hpe ninghkap lu ai atsam, hte galaw sa wa ai lam ni a ningmu hku nna hkrak tup tsun dan na re.
1.Mat kaja ai jak rung ni
HDPE board gaw density grai law ai (0.94{5}}0.97 g/cm3 lapran) nga ai, dai gaw shi hpe grai kaja ai rigidity, hkra machyi ai lam hpe ninghkap lu ai atsam, abrasion hpe ninghkap lu ai atsam ni hpe jaw ya ai. Shi a tensile n-gun gaw 20-35 MPa de du wa nna, shi a flexural n-gun gaw grai law ai majaw, n-gun ja ai jak rung lit ni hpe hkam sharang lu ai. Dai hta n-ga, HDPE board hta n-gun n law ai (0.05-0.1 daram) hte kaja dik htum tinang hkum hpe mari ai atsam ni nga ai, dai gaw, n-gun shayawm ra ai hpyi shawn ai lam ni a matu htuk manu ai, ga shadawn, lam madun ai lam ni hte conveyor belt ni hpe lam madun ai.
2.Chyum Hpaji Masa
HDPE board gaw acid law malawng, alkalis, sau, hte organic solvents law malawng hpe grai kaja ai hku ninghkap lu ai lam hpe madun dan nna, nta kata na nbung katsi ai tsi mawan yawng a majaw n hkra ai daram rai nga ai. Ndai arung arai gaw, n-gun n rawng ai n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-rawng ai n-gun n-gun n-rawng ai n-gup magap ni hte tank linings zawn re ai tsi mawan ni, grup yin, hka n-gun n-rawng ai hka hpe jasan jaseng ai bungli ni hta grai law hkra jai lang wa ai. Raitim, HDPE gaw n-gun ja ai oxidizing acid nkau mi hpe ninghkap lu ai atsam (suntric acid hte sulfuric acid zawn re ai ni) gaw, nbung laru kaba ai aten hta yawm mat ai (typically 60℃jan ), dai majaw, grai sawng ai tsi mawan ni hta jai lang ai shaloi, sadi maja na matu hpaji jaw ai.
3. Kaja dik htum ai grup yin shingra tara hpe n-gun jaw ai lam (ESCR)
HDPE sheet gaw molecular weight garan ginhka ai lam hte crystallinity grai law ai majaw, galu kaba ai- aten na myit ru myit tsang lam ni a npu hta pyi, grai kaja ai n-gun hpe ninghkap lu ai. Ndai lam gaw, galu kaba ai- aten na dynamic loads (sh) grup yin a n-gun ni hpe hkam sha ai application ni a matu, piping system hte tank linings zawn re ai application ni a matu htuk manu ai. Htunghking polyethylene hte shingdaw yu yang, HDPE sheet gaw ESCR ninghkap ai lam grau galu ai hpe madun dan nna, shi a daw jau ai prat hpe jat ya ai.
4. Grai kaja ai hku galaw lu ai lam
HDPE sheet hpe ladat amyu myu lang nna galaw nna hkrang shapraw mai ai, dai hta hot pressing, extrusion, injection molding ni lawm ai. Dai gaw grai htuk manu ai hte n-gun, galu kaba ai, hkrang amyu myu hta galaw shapraw lu ai. Shi a hka n-gun gaw 130-137℃daram rai nna, galaw shapraw ai aten hta grai kaja ai ntsin hpe jaw ya ai, n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun hpe n-gun jaw ya ai. Dai hta n-ga, HDPE sheets ni hpe welding, machining, hte kaga ladat ni hku nna galaw mai ai.
5. Kaga hpaji masa ni
1.Weatherer Resistance: HDPE sheets ni gaw UV hpe grai kaja ai hku ninghkap lu ai, raitim, n-gun ja ai lam hpe jat wa na matu, aten galu- aten galu shinggan lang na matu, anti{1}}}aging agent hpe jat bang na matu hpaji jaw da ai.
2.Electrical Insulation: HDPE gaw grai kaja ai n-gun n-gun rawng ai n-gun rawng ai arung arai langai rai nna, wan n-gun n-gun n-rawng ai arung arai ni a matu htuk manu ai.
3.Non{1}} Atsawm ai hte grup yin hku hkau lam: HDPE gaw lusha{2}grade madang ni hpe hkan sa nna, shim lum ai hte shim lum ai hte non{3}} n-gun rawng ai malu masha-}} ai n-gun rawng ai.
HDPE sheets ni gaw, shanhte a grai kaja ai jak rung atsam ni, tsi mawan ni hpe ngang grin hkra galaw ai lam, grup yin hpe n-gun jaw ai lam hpe ninghkap lu ai atsam, grai kaja ai galaw shapraw ai atsam ni a majaw, bungli law law hta ahkyak ai arung arai langai byin wa sai. Arung arai ni a hpaji masa rawt jat wa ai hte maren, HDPE sheets ni a bungli galaw ai lam gaw matut nna rawt jat wa ai, htawm hpang de grau dam lada ai ginra ni hta shanhte gaw ahkyak ai lit hpe gun hpai na re.
