在摩擦材料中使用硫酸鈣晶須的特點(diǎn) 1.我們的產(chǎn)品屬于微型纖維,在整個(gè)配方體系中可以起到輔助補(bǔ)充強(qiáng)度的效果(硫酸鈣晶須的分散性和對(duì)其它有機(jī)材料的親和性都很好,能夠在摩擦塊里的貧纖區(qū) 中均勻分布,從而配合摩擦塊中起骨架作用的長(zhǎng)纖維起到協(xié)同補(bǔ)強(qiáng)的效應(yīng)) . 特別是我們相對(duì)粗大的, 絨狀的NP- M02產(chǎn)品,除了補(bǔ)充強(qiáng)度的效果外,還可以更好 的增加產(chǎn)品的剪切強(qiáng)度和沖擊強(qiáng)度. 2.我們的產(chǎn)品在穩(wěn)定摩擦系數(shù)方面有很好的效果,隨著用量的增加效果越好.(推薦使用量為8% - 15% , 具體以實(shí)際的配方設(shè)計(jì)為準(zhǔn). 最高用量可以添加到 20%. ) 3.添加我們的產(chǎn)品在磨損方面有不錯(cuò)的效果, 而且在高溫的時(shí)候, 摩擦系數(shù)和耐摩性也保持得很好. (我們的產(chǎn)品耐熱性為1000 度,熔點(diǎn)為1450度) 4.添加我們的產(chǎn)品不會(huì)攻擊對(duì)偶,因?yàn)榱蛩徕}晶須的硬度不高,莫 氏硬度為3. 5.添加我們的產(chǎn)品可以軟化摩擦塊的材質(zhì), 在制動(dòng)的時(shí)候, 具有很好的舒適性. 6.添加我們的產(chǎn)品,不會(huì)產(chǎn)生黑灰,并能夠減少摩擦塊在制動(dòng)時(shí)落灰現(xiàn)象. 而且我們的產(chǎn)品原料是精選的食品級(jí)石膏,不含重金屬及其它對(duì)人體有害等物質(zhì).能夠適 應(yīng)和滿足市場(chǎng)對(duì)綠色環(huán)保的要求. 7.添加我們的產(chǎn)品,針對(duì)使用鋼纖維的半金屬或少金屬配方體系,可以相應(yīng)地減少鋼纖維用量(例如: 前期添加的鋼纖維為18%, 使用我們的產(chǎn)品,則可以減少到14 左右) ,同時(shí)還可以使鋼纖維蓬松起來(lái),降低最終產(chǎn)品的密度,從而降低此類(lèi)配方產(chǎn)品的噪音. 8.添加我們的產(chǎn)品不會(huì)因?yàn)槲覀兊漠a(chǎn)品而產(chǎn)生噪音,很多有使用礦物纖維,鋼纖維,陶瓷纖維的產(chǎn)品都相對(duì)容易產(chǎn)生噪音. (因?yàn)榈V物纖維的硬度普遍偏高,而且或多 或少都帶有渣球, 鋼纖維和陶瓷纖維都有硬度偏高的問(wèn)題.) 9.添加我們的產(chǎn)品,可以適當(dāng)?shù)纳倭繙p少樹(shù)脂的用量(1-2%). 眾所周知,摩擦材料中的樹(shù)脂主要是起到粘結(jié)所有其它材料的作用, 硫酸鈣晶須的加入還能夠減少 最終產(chǎn)品中其它粉末填料的使用量，隨著硫酸鈣晶須的加入，最終產(chǎn)品中的硫酸鈣晶須分別越來(lái)越均勻，它配合樹(shù)脂起到的粘結(jié)作用也越明顯，隨著該作用 的逐漸增強(qiáng)和其它無(wú)機(jī)粉末填料的適當(dāng)減少，相應(yīng)的樹(shù)脂用量就能夠適當(dāng)?shù)臏p少而不會(huì)導(dǎo)致最終產(chǎn)品的粘結(jié)效果降低。 10.針對(duì)有使用任何其它晶須產(chǎn)品的摩擦塊,我們的產(chǎn)品可以部分或者完全取代其它晶須, 取代后依舊可以保持或改善最終產(chǎn)品的原有品質(zhì). (在所有的無(wú)機(jī)晶須 產(chǎn)品中,硫酸鈣晶須的生產(chǎn)成本是最低的,能夠降低最終產(chǎn)品的造價(jià)成本,從而提高使用用戶的市場(chǎng)競(jìng)爭(zhēng)力.) 在塑料行業(yè)和復(fù)合材料行業(yè)中使用硫酸鈣晶須的特點(diǎn) 相比較于添加長(zhǎng)纖維材料，添加晶須產(chǎn)品能克服連續(xù)長(zhǎng)纖維在復(fù)雜模具中難以分布均勻，易出現(xiàn)貧膠區(qū)，使材料表面光潔度差，加工時(shí)對(duì)模具磨損嚴(yán)重等缺點(diǎn)，而且由于晶須的加入使復(fù)合材料的耐濕熱性能得到明顯改善，材料的力學(xué)性能水煮后的強(qiáng)度保持率也可有明顯提高。 硫酸鈣晶須因具有一定的長(zhǎng)徑比（10-300），且本身結(jié)構(gòu)纖細(xì)（直徑在0.1-10微米），并具備高強(qiáng)度和高模量的特點(diǎn)，產(chǎn)品可在塑料復(fù)合材料如PP、PA、PBT、PE、ABS、PVC、POM等及各種涂料中均勻分散，起著骨架作用形成聚合物-纖維復(fù)合材料 ，使聚合物內(nèi)聚強(qiáng)度增大，薄弱環(huán)節(jié)減少，從而顯著提高復(fù)合材料的機(jī)械強(qiáng)度。 相比較于添加長(zhǎng)纖維材料，添加硫酸鈣晶須產(chǎn)品能克服連續(xù)長(zhǎng)纖維在復(fù)雜模具中難以分布均勻，易出現(xiàn)貧膠區(qū)，使材料表面光潔度差，加工時(shí)對(duì)模具磨損嚴(yán)重等缺點(diǎn)，而且由于晶須的加入使復(fù)合材料的耐濕熱性能得到明顯改善，材料的力學(xué)性能水煮后的強(qiáng)度保持率也可有明顯提高。 在復(fù)合材料中添加晶須材料還可提高產(chǎn)品的穩(wěn)定性,耐熱性,介電性并降低收縮率和吸水率等等. 另外，無(wú)機(jī)晶須可應(yīng)用在陶瓷基和金屬基復(fù)合材料中達(dá)到增韌補(bǔ)強(qiáng)的效果， 還可使用在造紙行業(yè)中取代部分造紙?jiān)喜⒃诒夭牧现杏泻軓V的應(yīng)用。 在復(fù)合材料中添加晶須材料還可提高產(chǎn)品的穩(wěn)定性,耐熱性,介電性并降低收縮率和吸水率等等. 另外，無(wú)機(jī)晶須可應(yīng)用在陶瓷基和金屬基復(fù)合材料中達(dá)到增韌補(bǔ)強(qiáng)的效果， 還可使用在造紙行業(yè)中取代部分造紙?jiān)喜⒃诒夭牧现杏泻軓V的應(yīng)用. Characteristics of Calcium Sulfate Whisker in friction materials 1，Our products fall into micro fiber category, which can render assistance to increase strength in the integral formula system.(The dispersion property of calcium sulfate whisker is very good, as well as its affinity for other organic materials, the calcium sulfate whisker can be well dispersed in poor lead areas in friction blocks so as to play a supporting role to increase strength to long fibers of skeleton effect in friction blocks .) Our relatively thick and big NP-M02 of downy form product, especially, can not only increase strength, but also make products with a higher shear strength and impact strength. 2，Our product is with good effect in stabilizing friction factor, and the effect will become better and better as the growth of dosage (recommendation dosage: 8%-15%,the actual dosage should be subject to the formula design, max dosage: 20%) 3，Adding our product can produce good effect in friction, when the temperature is high ,it can keep good friction factor and abrasive resistance.(Our product refractoriness is 1000°C，melting point is 1450°C) 4，Adding our product will not do harm to brake assembly because the hardness of calcium sulfate whisker is not high, and Hardness(Mohs) is 3. 3，Adding our product can produce good effect in friction, when the temperature is high ,it can keep good friction factor and abrasive resistance.(Our product refractoriness is 1000°C，melting point is 1450°C) 4，Adding our product will not do harm to brake assembly because the hardness of calcium sulfate whisker is not high, and Hardness(Mohs) is 3. 5，Adding our product can soften the texture of the friction block ,so the brake can be used with great comfort while braking. 6，Adding our product will not generate soot, but can reduce the amount of ash when the brake is used. Furthermore, our product is made of gypsum of food-grade, and is without heavy metal and other harmful matters. 7，Adding our product can reduce the dosage of fiber for the formula of semimetal of steel fiber or less metal.(For example, if 18% of steel fiber in the earlier period, about 4 percent of steel fiber can be reduced by using our product), at the same time, the steel fiber can be plumped up to reduce the density so as to reduce the noise of this kind of friction block. 8，Adding our product will not lead to noise for our sake, while manufacturing products with mineral fiber, steel fiber, ceramic fiber will easily lead to noise.(Because the hardness of mineral fiber is commonly high, and is more or less with shot content, So is steel fiber and ceramic fiber ) 9，Adding our product can reduce a small amount of the dose of resin(1-2% could be reduced). As is well-known, the resin in fraction material is mainly to adhere to other materials, adding into calcium sulfate whisker can reduce the dose of other powders in the eventual products. Following the increment of calcium sulfate whisker, the distribution of it will become better, the adhering effect of it on resin will become more obvious. As that effect is enhancing and the sensible reduction of other inorganic material powder, the dose of resin will sensibly reduce, but the adhering effect of eventual products will not go down. 10， Aiming at any other whiskers which have been used in friction block , our product can partly or completely take their places , after using our products, maintenance or improvement in quality of the eventual product can be made.(Among all the inorganic whisker products, calcium sulfate whisker is with the lowest cost, so as to enhancing the competitiveness of final products.) Our main production: CALCIUM CARBONATE WHISKER, made by inorganic materials. As its slim structure(Diameter:0.1-10μm),especially in proper rate(Length/Diameter: 10-300μm), with high strength and high module properties, whisker has been successfully dispersed fairly in plastic composites materials forming such as PP,PA,PBT,PE,ABS,PVC,POM and coatings. In forming, whisker acts framework part and then together with composites become polymer-fiber physically. With whisker, it promotes polymer inner reinforcement and toughness, reduces weakness and thereby prominently enhances composites mechanism. In comparison with longer fiber material, that blending whiskers into plastics or resins can overcome dispersity hard problem, disappear imperfect resins, surface smooth and cleaning, lessen mould abrasion, etc. Furthermore, because of with whisker in plastics or resins, composites are greatly modified humid bear and thermal bear. And also its toughness and strength improved distinctly after test. In forming composites, with whisker also improve stability, heat-resistance, insulation, reduce shrinkage ratio, water absorption, etc. In addition, inorganic whisker reinforcing and toughing for ceramic and metallic composites has been achieved in industry. It can be taken up to substitute some portions of raw materials in paper making. And it has wide applications in insulatingcompound as well.