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</a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="3n33r3n" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="vnrndjd" class="box"><p><p> 鏡片的熱性質(zhì)和電性質(zhì) </p> <p> 熱性質(zhì)描述了關(guān)于材料的變化狀態(tài)以及溫度影響下的特性。 </p> <p> 熱性質(zhì)主要包括：1、熱傳導(dǎo)系數(shù)，塘廈批發(fā)彩鍍鏡片面板切割加工廠。2、比熱：物體溫度每升高一攝氏度所需的熱量與相同質(zhì)量的水溫每升高一攝氏度所需的熱量的比值。3、線性膨脹系數(shù)：預(yù)先設(shè)定的溫度范圍。4、熔點：物理常數(shù)。5、沸點。?6、鏡片的應(yīng)力溫度，塘廈批發(fā)彩鍍鏡片面板切割加工廠。 </p> <p> <br /> </p> <p> 電性質(zhì)表示了材料電磁波和電效應(yīng)的特性，由物理定律決定，有時需將鏡片的光學(xué)性質(zhì)與電性質(zhì)聯(lián)系。通常材料制造進需考慮以下參數(shù)：1，塘廈批發(fā)彩鍍鏡片面板切割加工廠、介電強度；2、預(yù)定頻率下的介電損耗系數(shù)。為什么亞克力UV噴繪能代替玻璃？塘廈批發(fā)彩鍍鏡片面板切割加工廠</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="塘廈批發(fā)彩鍍鏡片面板切割加工廠,鏡片面板" src="https://tyunfile.71360.com/UploadFile/JLKJ2020/637285914418964844/813508.png"></div><p> 光致變色樹脂鏡片材料組成 </p> <p> 光致變色樹脂材料： </p> <p> ***代光致變色樹脂鏡片出現(xiàn)在1986年，但是直到1990年***代Transition鏡片面市后，它才真正開始普及。一種新型的光致樹脂鏡片于1993年投放市場，這種鏡片采用樹脂材料作片基，用滲透法在鏡片的凸面滲透了一層光致變色材料，然后再鍍上一層抗磨損膜，起保護和耐磨作用。這項工藝技術(shù)可以使鏡片的變色不會隨屈光度數(shù)的加深而出現(xiàn)鏡片**與周圍深淺不一的情況，彌補了玻璃變色的不足。再加上片基是樹脂材料，質(zhì)輕且抗沖擊性強，所以這種鏡片特別適合用于各種屈光不正者使用 </p> <p> 光致變色樹脂鏡片的組合物: </p> <p> １．在所述單體混合物中加入抗氧劑、受阻胺、紫外線吸收劑、光穩(wěn)定劑及聚合調(diào)節(jié)劑等，以提高光致變色染料的壽命。 </p> <p> ２．在所述單體混合物中加入內(nèi)增塑劑大幅度提高鏡片的抗沖擊性。 </p> <p> ３．加入環(huán)氧及胺基單體**改進鏡片的膜層牢度。觀瀾pmma鏡片面板批發(fā)硬度：天然水晶硬度大，一般灰塵不易劃傷其表面，若發(fā)現(xiàn)鏡片上有輕微細(xì)小的劃痕，便有贗品之嫌。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="塘廈批發(fā)彩鍍鏡片面板切割加工廠,鏡片面板" src="https://tyunfile.71360.com/UploadFile/JLKJ2020/637285914583476563/5668146.png"></div><p> 光學(xué)玻璃鏡片的分類之有色玻璃鏡片 </p> <p> 有色玻璃鏡片 </p> <p> 有色玻璃鏡片是在無色光學(xué)玻璃中加入一些具有特殊吸收性質(zhì)的金屬鹽后使玻璃呈現(xiàn)不同顏色，并對各種不同的單色光有選擇性地吸收或濾過。其目的主要是用來做遮光和各種防護目鏡，使眼睛不受有害射線以及風(fēng)沙、化學(xué)藥品、0氣體等的侵害，起到保護眼睛的作用。常見的有色玻璃鏡片有灰色、茶色、綠色、蘭色、紅色和黃色等 </p> <p> 茶色玻璃鏡片 </p> <p> 添加氧化錳、氧化鐵或氧化鎳等著色。具有吸收紫外線和防眩光的作用，視物層次分明、清晰，可做太陽鏡。 </p> <p> 蘭色玻璃鏡片 </p> <p> 添加氧化鈷、氧化鐵、氧化銅和氧化錳等著色。具有防眩光的作用，適合高溫爐前人員的護目鏡 </p> <p> 黃色玻璃鏡片 </p> <p> 添加硫化鎘、氧化鈰及氧化鈦著色。具有吸收紫外線的作用，且視物清晰、明亮，可適合司機在陰雨、霧天配戴 </p><p> 鏡片的光線散射和衍射 </p> <p> 光線散射和衍射 </p> <p> (1)散射：散射是光線在各個方向上被散播的一種現(xiàn)象，它一般在固體的表面以及透 </p> <p> 明材料的內(nèi)部產(chǎn)生。理論上眼鏡片表面沒有散射發(fā)生，因為鏡片的磨片過程（拋光）消除了這一現(xiàn)象。然而當(dāng)鏡片由于外界污染而弄臟或表面由于油漬而模糊不清時會產(chǎn)生散射。同時鏡片內(nèi)部的菜射也非常有限，只在偶爾情況下，可能會使鏡片呈現(xiàn)黃色或乳白色。目前合格的眼鏡片只有非常少量的散射光線產(chǎn)生，通常可以忽略不計。 </p> <p> (2)衍射：衍射是當(dāng)光波遇到小障礙而改變行徑方向的一種現(xiàn)象。在眼鏡光學(xué)里，衍 </p> <p> 射現(xiàn)象是需引起重視的，因為衍射會使鏡片表面產(chǎn)生異常干擾，尤其是在使用不當(dāng)或不小心在鏡片表面造成的磨損的情況下無彈性：斷裂、伸拉彈性為零，容易遇到突發(fā)性外力發(fā)生粉碎性破碎，容易對眼睛造成意外傷害。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="塘廈批發(fā)彩鍍鏡片面板切割加工廠,鏡片面板" src="https://tyunfile.71360.com/UploadFile/JLKJ2020/637285914738261719/5456503.png"></div><p> 光致變色玻璃材料鏡片特點光致變色現(xiàn)象是通過改變材料光線吸收屬性，使材料對太陽光強度作出反應(yīng)的一種性質(zhì)。它的基本原則是使普通的玻璃（包括塑料光致變色材料）在紫外線輻射的影響下顏色變深，以及在周圍高溫的影響下顏色變淡，這兩個過程是可逆的，而且可能一直存在。這一現(xiàn)象是通過***在材料中混合光致變色物質(zhì)的分子而完成。1962年出現(xiàn)了***代光致變色玻璃材料,此后性能不斷得到改良。其主要是在玻璃材料中加入了鹵化銀晶體。這些晶體在紫外線擊幅射下起化學(xué)反應(yīng)，鏡片的顏色變深。***代光致變色玻璃材料的變色原理是銀原子和氯原子之間的一種電子交換，通過氯化銀和周圍的環(huán)境表現(xiàn)。在沒有光線條件下，氯化銀呈離子態(tài)，因銀離子是透明的，所以鏡片也是透明的；而在紫外線輻射下，不穩(wěn)定電子離開了氯離子，與銀離子結(jié)合為金屬銀并吸收光，鏡片則變深。當(dāng)紫外線輻射減弱，移動電子離開銀原子返回氯原子，鏡片逐漸恢復(fù)了原先的清澈狀態(tài)。對一般光致變色玻璃，變色同時也受到溫度控制，在光照度不變時，溫度越低則顏色越深。光致變色材料大多是灰色和棕色的，俗稱灰變和茶變，其它的顏色也可以通過專門的工藝達(dá)到。所有的眼鏡片。天然水晶有雜質(zhì),有石紋,色澤沒有人造的白.人造的基本上沒有雜質(zhì).廣東電器鏡片面板廠家</p><p style="text-indent:25px">大家可能平常都會遇到，玻璃做的杯子啊，什么的打碎了。塘廈批發(fā)彩鍍鏡片面板切割加工廠</p><p> 鏡片的光學(xué)反射和光線吸收性質(zhì) </p> <p> 光線反射 </p> <p> 光線在鏡片表面產(chǎn)生折射的同時，也會產(chǎn)生反射現(xiàn)象。光線反射會影響鏡片的清晰度，而且在鏡片表面會產(chǎn)生干擾性反射光。通常，鏡片材料的折射率越高，因反射而損失的光線就越多。當(dāng)然，對于干擾性反射光可以通過在鏡片表面鍍多層減反射膜而相應(yīng)抵消。 </p> <p> 光線吸收：材料的本身吸收光的特性會減少鏡片的光線透過率，這部分的光量損失對于非染色眼鏡片是可以忽略的，但如果為染色或變色鏡片，光的吸收量會很大，這也是此類鏡片的設(shè)計目的。眼鏡片的光線吸收通常指材料內(nèi)部的光線吸收，可通過鏡片前、后表面吸收光線的百分比表示。例如，30%的光線吸收相當(dāng)于30%的光通量在鏡片內(nèi)部的減少。材料的光線吸收遵循郎伯(Lambert′s?Law)定律，它根據(jù)鏡片的不同厚度呈**性的變化塘廈批發(fā)彩鍍鏡片面板切割加工廠</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3091915.html</p></div></div></div></div></div><div id="35zf3d3" class="page-right twoColRt"><div id="5tnxtnn" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="rdjftxj" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="l7dhdxd" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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