湖北农业科学
湖北農業科學
호북농업과학
Hubei Agricultural Sciences
2015年
18期
4519-4524
,共6页
橡胶[Heveabrasiliensis(Willd.exA.Juss.)Muell.Arg.]%子粒%物理特性%测定
橡膠[Heveabrasiliensis(Willd.exA.Juss.)Muell.Arg.]%子粒%物理特性%測定
상효[Heveabrasiliensis(Willd.exA.Juss.)Muell.Arg.]%자립%물리특성%측정
rubber [Hevea brasiliensis(Willd.ex A.Juss.)Muell.Arg.]%seeds%physical properties%determination
为提高橡胶[Hevea brasiliensis(Willd.ex A.Juss.)Muell.Arg.]子粒综合利用水平,研制高效率的橡胶籽粒脱壳装置,对橡胶子粒的三维几何尺寸﹑质量﹑密度﹑破碎力﹑静摩擦系数等物理特性进行了测定. 结果表明,橡胶子粒的几何平均直径和算术平均直径都随着子粒含水率的增加而减小,当含水率达到35.4%时出现最小平均直径, 分别为20.883﹑20.633 mm; 橡胶子粒的球度随着含水率的增大从0.850增大到0.868,呈现出较好的线性关系;而表面积与含水率却是出现先减小﹑后增大的变化,当含水率为35.4%时,表面积出现最小值;橡胶子粒的单粒重﹑体积和密度与含水率均呈明显的线性关系,都随含水率的增大而增大; 橡胶子粒在钢板和木板上的静摩擦系数变化范围分别为0.254~0.331﹑0.222~0.417,且均呈明显的线性增长;橡胶子粒在不同方向的破碎力与含水率的关系有所不同,长度方向和厚度方向的破碎力随含水率升高呈线性下降趋势,宽度方向则先减小﹑后增大. 该研究结果可为橡胶子粒脱壳﹑榨油﹑分离等相关机械的设计生产提供基础数据,并可为橡胶子物理特性研究提供原始的参数.
為提高橡膠[Hevea brasiliensis(Willd.ex A.Juss.)Muell.Arg.]子粒綜閤利用水平,研製高效率的橡膠籽粒脫殼裝置,對橡膠子粒的三維幾何呎吋﹑質量﹑密度﹑破碎力﹑靜摩抆繫數等物理特性進行瞭測定. 結果錶明,橡膠子粒的幾何平均直徑和算術平均直徑都隨著子粒含水率的增加而減小,噹含水率達到35.4%時齣現最小平均直徑, 分彆為20.883﹑20.633 mm; 橡膠子粒的毬度隨著含水率的增大從0.850增大到0.868,呈現齣較好的線性關繫;而錶麵積與含水率卻是齣現先減小﹑後增大的變化,噹含水率為35.4%時,錶麵積齣現最小值;橡膠子粒的單粒重﹑體積和密度與含水率均呈明顯的線性關繫,都隨含水率的增大而增大; 橡膠子粒在鋼闆和木闆上的靜摩抆繫數變化範圍分彆為0.254~0.331﹑0.222~0.417,且均呈明顯的線性增長;橡膠子粒在不同方嚮的破碎力與含水率的關繫有所不同,長度方嚮和厚度方嚮的破碎力隨含水率升高呈線性下降趨勢,寬度方嚮則先減小﹑後增大. 該研究結果可為橡膠子粒脫殼﹑榨油﹑分離等相關機械的設計生產提供基礎數據,併可為橡膠子物理特性研究提供原始的參數.
위제고상효[Hevea brasiliensis(Willd.ex A.Juss.)Muell.Arg.]자립종합이용수평,연제고효솔적상효자립탈각장치,대상효자립적삼유궤하척촌﹑질량﹑밀도﹑파쇄력﹑정마찰계수등물리특성진행료측정. 결과표명,상효자립적궤하평균직경화산술평균직경도수착자립함수솔적증가이감소,당함수솔체도35.4%시출현최소평균직경, 분별위20.883﹑20.633 mm; 상효자립적구도수착함수솔적증대종0.850증대도0.868,정현출교호적선성관계;이표면적여함수솔각시출현선감소﹑후증대적변화,당함수솔위35.4%시,표면적출현최소치;상효자립적단립중﹑체적화밀도여함수솔균정명현적선성관계,도수함수솔적증대이증대; 상효자립재강판화목판상적정마찰계수변화범위분별위0.254~0.331﹑0.222~0.417,차균정명현적선성증장;상효자립재불동방향적파쇄력여함수솔적관계유소불동,장도방향화후도방향적파쇄력수함수솔승고정선성하강추세,관도방향칙선감소﹑후증대. 해연구결과가위상효자립탈각﹑자유﹑분리등상관궤계적설계생산제공기출수거,병가위상효자물리특성연구제공원시적삼수.
To improve the comprehensive utilization of rubber seed and manufacture high effective hull devices, several phys-ical properties of rubber [Hevea brasiliensis(Willd.ex A.Juss.)Muell.Arg.] seed including, geometrical size, different diam-eter, density, hull thickness, ruptures force, static coefficients of friction and etc.were evaluated.The results showed that the arithmetic and geometric diameter decreased with the increase of moisture content and was the minimum (20.883, 20.633mm, respectively) when moisture content was 35.4%.The sphericity increased from 0.850 to 0.868 with the increase of moisture content, showing a obvious linear relationship.The surface area decreased to the minimum at the moisture content 35.4%, then increased with the moisture content increasing.Mass, volume and density all show obvious positive linear rela-tionship with moisture content.The static coefficients of friction on steel plate and wood plate surface all increased linearly with the increase of moisture content, ranging from 0.254 to 0.331 and 0.222 to 0.417, respectively.Referring to rupture force, it decreased linearly in length and thickness; but the width decreased first then nonlinearly increased.The results could provide reasonable and reliable data support for the design and production of rubber-seed-relative machines such as huller, oil press and sorting machine, and offer original data reference for relative studies.
