林产化学与工业
林產化學與工業
림산화학여공업
CHEMISTRY AND INDUSTRY OF FOREST PRODUCTS
2014年
6期
100-104
,共5页
腰果酚基乙酸酯%环氧腰果酚基乙酸酯%乙酰化木粉%复合材料%增塑剂
腰果酚基乙痠酯%環氧腰果酚基乙痠酯%乙酰化木粉%複閤材料%增塑劑
요과분기을산지%배양요과분기을산지%을선화목분%복합재료%증소제
cardanol acetate%epoxy cardanol acetate%acetylated wood flour%composites%plasticizer
利用熔融挤出-注塑的方法制得乙酰化木粉( AWF)/低密度聚乙烯( LDPE)复合材料，在制备过程中分别将腰果酚基乙酸酯( CA)和环氧腰果酚基乙酸酯( ECA)增塑剂添加到复合材料中。对复合材料的力学性能、吸水率、表面能、增塑剂热迁移和热机械性能( TMA)进行了研究。结果表明：随着增塑剂含量的增加，材料的力学性能不断下降，但整体而言由CA制备的复合材料的力学强度相比更高；吸水率测试显示材料的疏水性能在增塑剂质量分数为5%时差别不大，但添加量为15%时由 CA制备的材料具有更好的疏水性；接触角测试也验证了其界面极性最小。在85℃及100 min内ECA的热迁移常数(4.35×10-4)相比CA的(5.48×10-4)要小，同时随着时间延长至3700 min时ECA在材料中的保留更好。 TMA结果显示随着温度的增大材料的膨胀加剧，加入15%的ECA的复合材料在高温段的线膨胀系数(3758μm/(m·℃))要明显高于对应的加入CA的材料的线膨胀系数(3182μm/(m·℃))。
利用鎔融擠齣-註塑的方法製得乙酰化木粉( AWF)/低密度聚乙烯( LDPE)複閤材料，在製備過程中分彆將腰果酚基乙痠酯( CA)和環氧腰果酚基乙痠酯( ECA)增塑劑添加到複閤材料中。對複閤材料的力學性能、吸水率、錶麵能、增塑劑熱遷移和熱機械性能( TMA)進行瞭研究。結果錶明：隨著增塑劑含量的增加，材料的力學性能不斷下降，但整體而言由CA製備的複閤材料的力學彊度相比更高；吸水率測試顯示材料的疏水性能在增塑劑質量分數為5%時差彆不大，但添加量為15%時由 CA製備的材料具有更好的疏水性；接觸角測試也驗證瞭其界麵極性最小。在85℃及100 min內ECA的熱遷移常數(4.35×10-4)相比CA的(5.48×10-4)要小，同時隨著時間延長至3700 min時ECA在材料中的保留更好。 TMA結果顯示隨著溫度的增大材料的膨脹加劇，加入15%的ECA的複閤材料在高溫段的線膨脹繫數(3758μm/(m·℃))要明顯高于對應的加入CA的材料的線膨脹繫數(3182μm/(m·℃))。
이용용융제출-주소적방법제득을선화목분( AWF)/저밀도취을희( LDPE)복합재료，재제비과정중분별장요과분기을산지( CA)화배양요과분기을산지( ECA)증소제첨가도복합재료중。대복합재료적역학성능、흡수솔、표면능、증소제열천이화열궤계성능( TMA)진행료연구。결과표명：수착증소제함량적증가，재료적역학성능불단하강，단정체이언유CA제비적복합재료적역학강도상비경고；흡수솔측시현시재료적소수성능재증소제질량분수위5%시차별불대，단첨가량위15%시유 CA제비적재료구유경호적소수성；접촉각측시야험증료기계면겁성최소。재85℃급100 min내ECA적열천이상수(4.35×10-4)상비CA적(5.48×10-4)요소，동시수착시간연장지3700 min시ECA재재료중적보류경호。 TMA결과현시수착온도적증대재료적팽창가극，가입15%적ECA적복합재료재고온단적선팽창계수(3758μm/(m·℃))요명현고우대응적가입CA적재료적선팽창계수(3182μm/(m·℃))。
Composites of acetylated wood flour ( AWF)/low-density polyethylene ( LDPE) were prepared by extrusion-injection molding process, and cardanol acetate ( CA) and epoxy cardanol acetate ( ECA) were added respectively. Properties such as tensile strength and hydrophobic as well as surface energy, migration of plasticizers and thermal mechanical properties ( TMA) were studied. The results showed that the tensile strength of composites decreased with the increasing content of plasticizers, but tensile strength of all composites with CA were higher than that of composites with ECA. Composites with 5%plasticizers showed similar hydrophobicity, but composites with 15 % CA was more hydrophobic, and contact angle test showed the similar results. The migration test of plasticizers revealed ECA had lower transfer constant (4. 35 × 10-4 ) than that of CA (5. 48 × 10-4 ) at 85 ℃ in 100 min, and ECA retained more in the composites after 3 700 min. The result of TMA exhibited the inflation of composites intensified with increasing temperature, and composites with 15% ECA showed higher coefficient of linear expansion (3 758 μm/(m·℃)) than that of composites with CA (3 182 μm/(m·℃)).
