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更新時間: 2022-12-19
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產品特點: 紙(zhi)(zhi)(zhi)與紙(zhi)(zhi)(zhi)板(ban)(ban)(ban)吸水性(xing)測(ce)(ce)定(ding)(ding)儀(yi)本儀(yi)器(qi)是根據GB/T1540-1989紙(zhi)(zhi)(zhi)和(he)紙(zhi)(zhi)(zhi)板(ban)(ban)(ban)吸水性(xing)的測(ce)(ce)定(ding)(ding)法(fa)(可(ke)勃法(fa))規定(ding)(ding)的基本參數和(he)要求(qiu)而設計的。可(ke)勃吸收性(xing)測(ce)(ce)定(ding)(ding)儀(yi)此標準(zhun)適用(yong)于(yu)測(ce)(ce)定(ding)(ding)各(ge)種(zhong)(zhong)紙(zhi)(zhi)(zhi)或紙(zhi)(zhi)(zhi)板(ban)(ban)(ban)表(biao)面(mian)的吸水性(xing)。但不(bu)適用(yong)于(yu)準(zhun)確評(ping)價(jia)紙(zhi)(zhi)(zhi)或紙(zhi)(zhi)(zhi)板(ban)(ban)(ban)的書寫性(xing)能。是根據GB/T1540-1989紙(zhi)(zhi)(zhi)和(he)紙(zhi)(zhi)(zhi)板(ban)(ban)(ban)吸水性(xing)的測(ce)(ce)定(ding)(ding)法(fa)(可(ke)勃法(fa))規定(ding)(ding)的基本參數和(he)要求(qiu)而設計的。此標準(zhun)適用(yong)于(yu)測(ce)(ce)定(ding)(ding)各(ge)種(zhong)(zhong)紙(zhi)(zhi)(zhi)或紙(zhi)(zhi)(zhi)板(ban)(ban)(ban)表(biao)面(mian)的吸水性(xing)。但不(bu)適用(yong)于(yu)準(zhun)確評(ping)價(jia)紙(zhi)(zhi)(zhi)或紙(zhi)(zhi)(zhi)板(ban)(ban)(ban)的書寫性(xing)能。
紙與紙板吸水性測定儀本儀(yi)器是根(gen)據GB/T1540-1989紙(zhi)和紙(zhi)板吸水性的(de)(de)測定法(可勃法)規定的(de)(de)基本參數和要求而設(she)計的(de)(de)。紙與紙板吸水性測定儀此標準(zhun)(zhun)適用于測(ce)定各(ge)種(zhong)紙(zhi)或(huo)紙(zhi)板(ban)表面的吸水(shui)性。但不適用于準(zhun)(zhun)確(que)評價紙(zhi)或(huo)紙(zhi)板(ban)的書寫性能。
≡ 儀器(qi)原理 ≡
紙(zhi)(zhi)(zhi)(zhi)與(yu)紙(zhi)(zhi)(zhi)(zhi)板(ban)表(biao)面(mian)吸(xi)水量(Cobb)值(zhi):單位(wei)面(mian)積的(de)紙(zhi)(zhi)(zhi)(zhi)和紙(zhi)(zhi)(zhi)(zhi)板(ban)在(zai)一定(ding)壓力、溫度下,在(zai)規定(ding)時(shi)間內表(biao)面(mian)所吸(xi)收的(de)水量,以g/㎡計。具體公式如下:C=(G2-G1)×100。式中:C-可勃(bo)吸(xi)水值(zhi);G2-吸(xi)水后稱(cheng)出(chu)之試(shi)(shi)樣質量;G1-吸(xi)水前稱(cheng)出(chu)之試(shi)(shi)樣質量。紙(zhi)(zhi)(zhi)(zhi)和紙(zhi)(zhi)(zhi)(zhi)板(ban)吸(xi)收性(xing)測定(ding)儀是(shi)紙(zhi)(zhi)(zhi)(zhi)和紙(zhi)(zhi)(zhi)(zhi)板(ban)表(biao)面(mian)吸(xi)水性(xing)試(shi)(shi)驗(yan)的(de)常(chang)規儀器,亦稱(cheng)為(wei)紙(zhi)(zhi)(zhi)(zhi)張(zhang)表(biao)面(mian)吸(xi)收重(zhong)量測定(ding)儀。這種儀器采用(yong)吸(xi)收性(xing)試(shi)(shi)驗(yan)多種方法中的(de)可勃(bo)(Cobb)試(shi)(shi)驗(yan)法,因此也(ye)稱(cheng)為(wei)可勃(bo)吸(xi)收性(xing)測定(ding)儀。
≡ 技術(shu)參(can)數(shu) ≡
金屬圓(yuan)筒內截面積為:100±0.2㎝2(相應(ying)內徑(jing)為(wei)112.8±0.2mm),圓(yuan)筒(tong)高為(wei)50mm,圓(yuan)筒(tong)環面與試(shi)樣接觸部分應(ying)光滑。
吸水紙定量為200~250g/㎡,其吸收速度為75mm/10min。
當吸(xi)水紙單層定量(liang)小于200~250 g/㎡時(shi),可(ke)以(yi)用多(duo)層疊(die)加以(yi)滿足要求。
光(guang)滑金屬平輥:輥的寬度200±0.5mm,質量應為10±0.5kg。
尺(chi)寸(cun):390×280×410(mm),重量:20kg
≡ 產品特點 ≡
1.金(jin)屬圓筒與工作面均采(cai)用(yong)不銹鋼材料經久耐(nai)用(yong)不生銹。
2.儲水桶(tong)內設置(zhi)水線方便觀(guan)察桶(tong)內水量(liang)。
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