auxetic 中文意思是什麼
auxetic
解釋
促無分裂生長劑-
Based on the understanding of netative poisson ratio mechanism and the characteristics of liquid crystalline polymers, the ability for the smectic liquid crystalline polymers possibly to bear the auxetic behavior was firstly proposed. at the same time the ideal molecular model was upbuilt and the calculation about the negative poisson ratio of smectic liquid crystalline polymers was theoretically carried out
經過對負泊松比產生機理和液晶高分子特徵的理解，首次提出了近晶c相液晶高分子也具有產生npr效應的能力，建立了近晶c相液晶高分子產生負泊松比的分子模型，並且對其負泊松比進行了理論計算。 -
Although no regular relationship between the modulus and v existed, it still could be shown that the good auxetic properties did exist in the polyolefin blends whose modulus differential was in the range from 800 to 1000 mpa between two phases
模量研究結果表明組分的模量組成與共混體系的泊松比值並無有規律性的聯系，但兩相模量差在800一io00mpa范圍內體系呈現很好的負泊松比效應。 -
The v was tested by yjy stress transducer with mvad card by the methods of recording the deformation in the wideness and thickness direction of the specimens during the tensile test. a stable auxetic polyolefin blend with the minimal value - 1. 4 was observed after repeated test
採用附有mvad通道卡的yjy型片式傳感器，記錄試樣在拉伸過程中寬度和厚度方向的形變並根據泊松比的定義進行計算，反復實驗后獲得最小值為- 1 . 4的負泊松比烯烴共混體系。 -
In addition to, the effects such as process pressure, the consistence and modulus relationship on the v of the auxetic polyolefin blends were discussed respectively. it was observed that the minimal v of auxetic polyolefin blends reached - 1. 6 under low pressure from the contrast result of different specimens processed under 20 %, 40 %, 60 % of atoms
對比在20 、 40 、 60個氣壓下制備的試四川大學碩十學位論文樣泊松比測試結果，發現低壓條件下可獲得最小值為一1 . 6的負泊松比共混體系。 -
Through molecular design, a series of liquid crystalline copolyesters, which possibly possessed the auxetic behavior, were prepared by solution condensation reaction between 2, 5 - bis ( p - alkoxy benzoyloxy ) hydrobenzoquinone, 4, 4 ' - ( decanoxy ) dibenzoyl chloride and 4, 4 ' - dihydroxy - oc, co - diphenoxydecane
經分子設計，通過2 ， 5 ?二（對烷氧基苯酰氧基）對苯二酚、 4 ， 4 』 ?二羥基? ， ?二苯氧基癸烷和4 ， 4 』 ? （癸二酰氧基）二苯甲酰氯之間的縮合反應合成了一系列具有負泊松比潛能的液晶共聚酯。 -
Rotation - cavitation mechanism was outlined based on the experiment results and the essential conditions for the occurrence of auxetic properties in polyolefin blends were concluded as followed : firstly there must be at least two phases, the matrix can be soft materials which were able to be networks when being stretched, as well as suitable consistence must be provided between two phases. fracture stress work measurement was optioned to characterize the force between two phases. finally, the auxtic property repeatability of the blends was measured and the fact that the auxetic property could only occur in the elastic range was certificated by the result that only the specimens which were stretched for 5s, 10s had repeatability after being retained for 1 months
實驗工作的最後一部分研究了體系負泊松比效應的可重復性，選取穩定的負泊松比共混體系在測試數據採集時間為55 、 105 、 155 、 205條件下進行測試，將樣條放置l天、 10天、 30天進行測試，測試結果表明，在5s 、 105條件下測試的試樣在放置一個月後泊松比測試結果具有可重復性，證實了體系的負泊松比現象發生在材料的彈性形變范圍內。
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