
交聯度;架橋度
The relationship among the degree of crosslinking relative amount of aldehyde group and ether linkage was investigated.
考察了交聯聚*********樹脂交聯度與醛基、醚鍵相對含量之間的關系;
The properties related to degree of crosslinking of radiation-crosslinked HDPE with AC blowing agent, EVA and multi-functional monomer (SR444) were investigated.
研究了加入AC發泡劑、EVA、多官能團單體(SR444)的輻射交聯高密度聚乙烯泡沫塑料與交聯度相關的性質。
From the data of gel parameters and their chromatographic characteristics, it can be derived that even in gels of low degree of crosslinking certain degree of uneven crosslinking is prevailing.
測定填料的結構參數,并與色譜性能結合,指出即使是低交聯度的凝膠也存在非均勻的分子鍊網孔結構。
The graft ratio, degree of crosslinking, processing rate of pipe and storage life of silane crosslinked PE product were better than those of the product by one-step process.
兩步法在接枝率、交聯度、管材成型速度和物料存放時間方面優于一步法。
Conclusion: The property of resin is good when the brine's concentration is 30%, the degree of crosslinking is 14%, methyl benzene as diluent is 0.1.
結論:鹽溶液濃度約為30%,交聯刺14%,緻孔劑甲苯為單體的0.1倍時,所得樹脂性能良好。
Addition of co-crosslink agent increased the degree of crosslinking and shortened the vulcanization time.
加入共交聯劑,可以提高交聯程度,縮短硫化時間。
Gel content was used to measure the degree of crosslinking;
通過凝膠含量的測定确定交聯程度;
The surface topography of viscoses changed obviously, and the grooves disappeared gradually as the degree of crosslinking increasing.
隨着交聯程度的增加,纖維的表面形貌變化比較明顯,黏膠纖維表面的凹槽逐漸消失。
The experiments showed that properties of foam, depended on foamable density, cellular structure, the degree of radiation crosslinking and manufacturing method and condition.
實驗表明,泡沫密度、泡沫結構以及加工的方法和條件皆成為影響聚乙烯泡沫塑料力學性能的因素。
The results showed the degree of the crosslinking of the modified UF resin was higher than that of the untreated UF resin.
結果表明,改性的UF樹脂固化後的交聯度大于未改性樹脂固化後的交聯度。
The effects of polymerization conditions, such as water content, neutralization degree, amounts of crosslinking agent and stabilizer etc, on the proper-ties of ER fluid were investigated.
研究了水分、交聯劑、穩定劑及中和度等條件對ER液的屈服應力及漏電流密度的影響,并用粒子極化理論對實驗結果作了相應的解釋。
The structure and properties of the surgical pledget produced by a low degree of etherification and crosslinking process were stu***d in this paper.
研究了經低度醚化和交聯處理的醫用紗布纖維的結構和性能。
The effects of reactive functional monomer mass concentration, double-functional monomer mass concentration in core and shell thickness on the crosslinking degree of dry latex film are investigated.
研究了反應性官能團質量分數、核層雙官能團單體質量分數以及殼層厚度等因素對核殼乳液幹膜交聯度的影響。
The equilibrium swelling method showed that the crosslinking degree of TAIC was higher than that of PDM.
用平衡溶脹法測試共混物的交聯密度,表明TAIC共混膠的交聯程度大于PDM共混膠。
The amount of structural hydroxyl loss can be correlated with the crosslinking degree of AL-CLS.
層結構羟基丢失的難易程度與交聯度有關。
OBJECTIVE: To study the relaxation of in situ crosslinking degree induced by calcium cations in the pectin-based matrix tablets.
目的:研究鈣離子誘導的果膠分子在體交聯度松弛的機理。
The influence of reaction temperature, neutralization degree of acrylic acid and amounts of crosslinking agent, initiator, dispersant and kaolin on the absorbency of the composite was discussed.
研究了加入高嶺土的聚*********鈉複合高吸水性樹脂合成中反應溫度、中和度、交聯劑用量、引發劑用量、高嶺土添加量等影響樹脂吸水性能的主要因素。
The influences of monomer concentration , neutralization degree , crosslinking agent and radiation dosages on absorption performance of crosslinking poly(sodium acrylate) were stu***d.
研究了單體濃度,中和度,交聯劑,輻照劑量等因素對交聯聚*********鈉吸水性的影響。
Through determination of moisture absorption of coatings film and crosslinking degree, a curing regularity is obtained.
通過測定塗膜吸水率、交聯率,得到了塗膜的固化規律,并用紅外光譜分析了塗膜的固化反應。
The influences of reaction conditions and crosslinking degree on the content of benzoyl peroxide groups were stu***d.
研究了各種條件對過氧酰基含量的影響。
The influences of reactive conditions such as crosslinking degree, neutral degree, temperature and monomer proportion to the absorbency were investigated.
研究了聚合過程中的反應條件,如交聯度、中和度、溫度、單體配比等對吸收性能的影響。
The key factors of influence on absorbency including the degree of neutralization, the amount of initiator and crosslinking agent as well as the amount of kaolin have been discussed.
研究了單體中和度、高嶺土加入量、交聯劑用量、引發劑用量等影響吸水倍率的主要因素。
The effects of the crosslinking agent, the neutralization degree of monomer, the reaction temperature and reaction time on the hydrogel strength were investigated.
實驗考察了原料配比、引發劑用量、交聯劑用量以及單體中和度對魔芋粉接枝*********超強吸水劑凝膠強度的影響。
The influences of several factors on WA were stu***d, such as initiation temperature, neutralization degree of acrylic acid, amount of initiator, crosslinking agent, AM and SAS.
考察了引發溫度、*********中和度、交聯劑、引發劑、************及丙烯磺酸鈉的用量對常壓下吸鹽水率的影響。
The results indicate that the saturant crosslinking density, the lowest degree of swelling of the PEO R-150 water-swollen hydrogel films produce an unfavorable effect on their machinery strength.
這表明PEOR-150溶脹水凝膠膜飽和的交聯密度和過低的平衡水含量對其機械強度産生了不利的作用。
As a result, firstly they have lower sols with the content of 7~30% and higher gel crosslinking density with the swelling degree of 200~570%;
研究發現,該彈性體溶膠含量在7~30%之間,交聯密度較大(凝膠質量溶脹度在200~570%之間);
The results also showed that the rubber accelerator HVA-2 enhanced the vulcanization rate, the crosslinking degree and the scorch safety of rubber.
加入促進劑HVA-2,可顯著提高膠料的硫化速度和交聯程度,并改善焦燒安全性;
交聯度(Degree of Crosslinking) 是指高分子材料中,線性或支化聚合物鍊之間通過化學鍵(交聯鍵)相互連接形成三維網絡結構的程度。它是表征聚合物交聯狀态的關鍵參數,直接影響材料的物理、化學和機械性能。
基本概念與化學本質
在未交聯的聚合物中,分子鍊彼此獨立或僅存在較弱的物理纏結。當引入交聯反應(如橡膠硫化、熱固性樹脂固化)後,鍊間形成共價鍵連接點(交聯點)。交聯度通常通過單位體積或單位質量聚合物中所含交聯點的數量、交聯點之間的平均分子量(Mc)或交聯密度(ρx,單位體積的交聯點摩爾數)來衡量。交聯度越高,網絡結構越緊密。
來源:高分子科學經典教材《Principles of Polymer Chemistry》by Paul J. Flory (Cornell University Press)。
測量方法
交聯度的測定通常依賴于其物理效應:
來源:國際标準測試方法ASTM D2765(溶脹法測定交聯乙烯塑料的交聯度)及ISO 4664(橡膠交聯密度的測定)。
對材料性能的關鍵影響
交聯度是材料設計的核心參數:
來源:材料科學綜述期刊《Progress in Polymer Science》中關于聚合物網絡結構與性能關系的論述。
交聯度是量化聚合物網絡結構的關鍵指标,通過化學鍵連接分子鍊形成三維網絡,其數值大小深刻決定了材料從橡膠彈性體到剛性塑料的最終性能與應用範圍。精确控制交聯度是高分子材料改性和加工的核心技術之一。
“Degree of crosslinking”(交聯度)是高分子材料領域的重要概念,具體解釋如下:
指高分子鍊之間通過化學鍵或物理作用形成的交聯結構的密集程度。交聯度越高,材料的三維網絡結構越緊密,通常表現為硬度、耐熱性等性能的提升。
常用以下指标衡量:
如需進一步了解測量方法(如溶脹法、力學測試法),可參考高分子材料專業文獻或實驗手冊。
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