A viscosity testing method of a soybean-based aldehyde-free timber adhesive
A technology for wood adhesives and testing methods, which is applied in the field of viscosity testing of soybean-based formaldehyde-free wood adhesives, can solve the problems that the viscosity of soybean-based formaldehyde-free wood adhesives cannot be quantitatively measured, and achieve fast testing speed , good fluidity and low manufacturing cost
Active Publication Date: 2014-09-10
宁波朝露新材料科技有限公司
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[0005] The present invention provides a simple, effective and quantitative measurement of the viscosity of soybean-based formaldehyde-free wood adhesive to solve the current situation that the viscosity of the existing soybean-based formaldehyde-free wood adhesive cannot be quantitatively measured. Test Method for Viscosity of Wood Adhesives
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[0028] figure 1 , figure 2 , image 3 In the shown embodiment, a kind of viscosity testing method of soybean-based formaldehyde-free wood adhesive comprises the following steps
[0029] The soybean-based formaldehyde-free wood adhesive 31 that needs to be used for testing viscosity is contained in the container 30;
[0030] Lower the glue-dipping member 10 used for dipping the soybean-based formaldehyde-free wood adhesive to a set depth below the liquid level of the soybean-based formaldehyde-free wood adhesive 31 in the container 30, and then dip the soy-based formaldehyde-free wood adhesive agent to complete the descent phase;
[0031] Pull up the glue-dipping member 10 dipped in the soybean-based formaldehyde-free wood adhesive 31 until it is completely separated from the liquid surface of the soybean-based formaldehyde-free wood adhesive, and complete the rising stage;
[0032] Remove the glue-dipping member 10 dipped in the soybean-based formaldehyde-free wood a...
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A viscosity testing method of a soybean-based aldehyde-free timber adhesive is disclosed. The method includes: lowering an adhesive-dipping part to the liquid surface of the soybean-based aldehyde-free timber adhesive in a container, dipping the adhesive, lifting the adhesive-dipping part up until the adhesive-dipping part is fully separated from the liquid surface of the adhesive, taking the adhesive-dipping part down, weighing the total weight of the adhesive-dipping part dipped with the adhesive, subtracting the net weight of the adhesive-dipping part before adhesive dipping to obtain the total weight of the dipped adhesive, and calculating the average adhesive dipping amount per area that is A=(m<2>-m<1>) / s=(m<2>-m<1>) / [(a<1>+a<2>+ ...+a<n>)h] as the viscosity index representing the soybean-based aldehyde-free timber adhesive according to the total weight of the dipped adhesive and the effective adhesive dipping area, wherein the A is the average adhesive dipping amount per area, the m<1> is the initial net weight of the adhesive-dipping part before dipping, the m<2> is the total weight of the adhesive-dipping part after dipping, the s is the effective adhesive dipping area, the a<1>, the a<2>, ... and the a<n> are side widths of single plate sides of adhesive dipping plates, and the h is the height from a cut-off line to the bottom of the adhesive-dipping part. Effective and quantitative measurement of the viscosity of the adhesive is achieved.
Description
technical field [0001] The invention relates to a viscosity testing method, in particular to a viscosity testing method for soybean-based formaldehyde-free wood adhesives. Background technique [0002] When a liquid is flowing, the property of internal friction between its molecules is called the viscosity of the liquid, and the size of the viscosity is expressed by viscosity. Viscosity is an important indicator to measure the fluidity of a liquid, and it is one of the important physical properties and technical indicators of a liquid. The viscosity of the liquid is restricted by the viscosity, the stronger the viscosity of the liquid, the higher the viscosity value. In the fields of chemical industry, food and biomedicine, the viscosity of liquid involves the process, equipment, efficiency and product quality of many industrial processes, and is also closely related to human life and health. Viscosity reflects the basic characteristics of the fluid, and is also an importa...
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Inventor 张鹏李青璇罗东风刘小青徐益忠
Owner 宁波朝露新材料科技有限公司