内结合强度
- 网络internal bond strength;Internal Bonding Strength
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板的吸水厚度膨胀率(TS)缩小33%;在相同施胶量下,板的内结合强度(IB)提高约15%,同时甲醛释放量降低约24%;
Some physical and mechanical properties of the boards could be improved : the thickness swelling ( TS ) was decreased by 33 % , the internal bond strength ( IB ) increased about 15 % , formaldehyde emission of the board was reduced by 24 % .
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平面密度分布对刨花板内结合强度的影响
Effects of Horizontal Density Distribution on Internal Bond Strength of Particleboard
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通过对产品静曲强度、弹性模量、内结合强度和2h吸水厚度膨胀率的检测和分析,优化出最佳的生产工艺。
According to the detecting and analysis the MOR 、 MOE 、 IB and 2h TS of the composite board , optimize the best producing technology .
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通过显微观察及板内结合强度测试,结果表明,蒸汽冷凝水对水溶性PF树脂胶有稀释作用,改变胶的流动和渗透性能。
The results of microscopic observation on the glue line and internal bond testing of the board showed that the condensed water would dilute PF and thus increase its flow and penetration into flakes .
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其结合强度虽随电压的增大而减小,但在250~450V的电压范围内结合强度均高于31.4MPa。
Their adhesive strength reduces with the increase of the voltage , but it is higher than 31 . 4 MPa in the voltage of 250-450 V.
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温度对刨花板的内结合强度影响显著,而对静曲强度和弹性模量影响不显著;
The effects of temperature on IB of PB were significant , but not insignificant on MOE and MOR .
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随着木纤维长度的增大,产品的静曲强度提高、内结合强度降低;
With the increase of wood fiber length , the static bending strength of products increases and the internal bond strength decreases .
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芬顿试剂协同工业木素处理后纤维板的性能有了进一步的增加,内结合强度达到0.86MPa,吸水厚度膨胀系数降至25.3%。
Performance of fiberboard treated by Fenton reagent combined with Kraft lignin had a further increase . Internal bond reached 0.86 MPa .
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以淀粉胶粘剂的黏度和所制刨花板的内结合强度为指标,对淀粉胶粘剂制备过程中酸解氧化预处理工艺、六羟树脂交联改性工艺进行了探讨。
The pretreatment process of acid hydrolysis-oxidation and cross-linking modification by hexamethoxy methyl melamine were discussed , with viscosity of the starch adhesive and the internal bond strength of particleboard as indicators .
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可以得出结论,随着红麻粉末目数的增加,红麻秆无胶碎料板的内结合强度以及吸水厚度膨胀率性能都有了很大的改善。
The experimental results showed that with the increase of kenaf powder mesh size , the internal bond strength and thickness swelling properties of kenaf core binderless particleboard have been greatly improved .
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以脲醛树脂结构形成特征为基础,研制了一种甲醛释放量低、内结合强度高的适用于蔗渣中密度纤维板生产的脲醛树脂胶粘剂。
Based on character of structure formation of urea formaldehyde ( UF ) resin , a new synthesizing technology was designed for making low formaldehyde emission UF resin for bagasse medium density fiberboard ( MDF ) .
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结果表明:随着聚氯乙烯废料加入量的增加,复合刨花板的静曲强度,弹性模量以及内结合强度均降低;吸水厚度膨胀率减小;
The results showed that modulus of rupture ( MOR ), modulus of elasticity ( MOE ), internal bond strength ( IB ) and thickness swelling ( TS ) were all decreased with increasing of D PVC content .
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在漆酶作用体系下,添加酶法絮凝废水析出的沉淀物,纤维板的内结合强度比空白样提高了71.05%,吸水厚度膨胀率比空白样降低了75.9%。
Through the catalysis of the laccase , the precipitated lignin from enzymatic treatment of wastewater has good enhancement effect on fiberboard . The internal bond increased by 71.05 % . Thickness swelling decreased by 75.9 % as compared with the blank sample .
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当柠檬酸添加量介于0.05%~0.1%之间时,石膏刨花板的内结合强度、静曲强度和弹性模量最高,随着添加量的增加其上述力学性能也逐渐变差。
The internal bond strength , the modulus of rupture and modulus of elasticity of GPB were the highest when the citric acid of 0.05 % ~ 0.1 % was added . The above mechanical properties were reduced obvious as high content citric acid was added .
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结果表明:当样品晶界处铁原子的3d电子占据态密度高于晶粒内时,晶界结合强度低于晶内,晶界表现出脆性,材料的冲击断裂方式主要为脆性的沿晶断裂;
It is found that if the grain boundary ( GB ) has a higher occupancy of 3d states of iron than that of the bulk , the sample has a weak bonding of GB and tends to intergranular fracture .
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在一定范围内,增加界面结合强度,可提高UPVC的屈服强度与模量,却使材料的缺口冲击强度有所降低;
To a certain extent , increasing the interfacial adhesion strength , we can elevate the yield stress and modulus of elasticity of the UPVC , but reduce the impact strength .
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在一定量范围内,随着乳化石蜡施加量、UF施加量和密度的增加,MDF的吸水厚度膨胀率减小、内结合强度增大。
Within a certain range , as the amount of emulsion wax and glue and density increased , the TS decreased and the internal bonding strength ( IB ) increased .