胶黏剂的毕业论文

IntroductionIn recent years, as the improvement of people's awareness on environment protection and health and the continued development of wood processing industry, the protein-based adhesive has been attached great importance again. Soybean is cheap, but rich in protein and active groups, so the soy protein gel which made from soybean meal has great potential [1]. The soy protein gel has been used in the production of plywood in the US [2], and China has also realized the industrial production of soy protein plywood in 2005 [3]. In 2006, Nanjing Forestry University has applied for a patent on "Industrial Production Methods of Non-formaldehyde Type Ⅱ Bean Gum Poplar Plywood" [4], and soy protein fiberboard achieved industrial production in Shandong Province in 2009 [5]. The results show that concentration of carbamide has significant influence on the unfolding of soy protein's tertiary structure, and carbamide can make soy protein more water-resistant than using alkali [6,7]. Ultrasonic treatment is widely used in various studies, especially because the ultrasound can accelerate the chemical reactions [8]. Currently, the soybean-based adhesive is mainly used in wood processing industry, but less applied to cardboard this experiment, carbamide plus the assistance of ultrasound are used to change the nature of soy protein powder, then get soybean protein adhesive to bond cardboards; it systematically studied the influence of protein concentration, carbamide concentration, treatment time, temperature, sonication time on the soy protein gel adhesive strength. This experiment will provide a new way of thinking in the wide application of soy-based adhesive.手工翻的~

IntroductionIn recent years, as people on environmental protection, health awareness, as well as the sustainable development of wood processing industry, protein-based adhesives renewed attention. Soy protein rich, low cost and contains a large number of active groups to produce soybean meal and soybean protein gel has great potential [1]. Soy protein adhesives have been used in plywood manufacturing in the United States [2], 2005, China has also achieved the soy protein plastic plywood for industrial production [3], 2006, Nanjing Forestry University, a patent application for "non-formaldehyde-speed business bean gum Yang Ⅱ Plywood production method for industrial production "[4], in 2009 in Shandong Province of the soybean protein fiber in the industrial production of glue [5]. The results show that urea concentration on the unfolding of tertiary structure of soy protein have a significant effect, and the use of urea to the modification of soy protein than with alkali modification, has better water resistance [6,7]. Ultrasonic treatment is widely used in various studies, particularly ultrasound can accelerate the chemical reaction [8]. Currently, soy-based adhesive is mainly used in wood processing industry, less adhesive applied to this experiment, ultrasonic urea modified soy protein powder, preparation of soybean protein adhesive, adhesive cardboard; system protein concentration, urea concentration, treatment time, temperature, ultrasonic treatment time on the soybean protein gel adhesive strength. This experiment soy-based adhesives  Pan-wide application provides a new way of 's thesis, expert help translate what wow, reward high scores, just to the exact translation:) good answer double extra points。绝对新

In recent years, as people on the environmental, health awareness and sustainable development of wood processing industry, renewed emphasis on protein-based adhesive. 大豆蛋白质资源丰富、价格低廉而且含有大量活性基团，以豆粕为原料制作的大豆蛋白胶具有很大的发展潜力[1]。 Soy protein rich, low cost and contains a large number of active groups to produce soybean meal and soybean protein gel has great potential [1]. 大豆蛋白胶粘剂已在美国应用于胶合板的生产[2]，我国也在2005年实现了大豆蛋白胶胶合板的工业化生产[3]，2006年南京林业大学申请了技术发明专利“无醛豆胶速生意杨Ⅱ类胶合板的工业化生产制作方法”[4]，2009年山东省实现了大豆蛋白胶纤维板的工业化生产[5]。 Soy protein adhesives have been used in plywood manufacturing in the United States [2], 2005, China has also achieved the soy protein plastic plywood industrial production [3], Nanjing Forestry University in 2006 a patent application for "non-formaldehyde-speed business bean gum Yang Ⅱ Plywood production method for industrial production "[4], in 2009 in Shandong Province of the soybean protein fiber in the industrial production of glue [5]. 研究表明，脲浓度对大豆蛋白质三级结构的展开有显著影响，并且使用脲对大豆蛋白改性比用碱改性，具有更好的耐水性能[6,7]。 The results show that urea concentration on the unfolding of tertiary structure of soy protein significantly affected, and the use of urea to the modification of soy protein than with alkali modification, has better water resistance [6,7]. 超声处理被广泛的应用于各种研究，特别是超声波可以加速化学反应[8]。 Ultrasonic treatment is widely used in various studies, particularly ultrasound can accelerate the chemical reaction [8]. 目前，大豆基胶粘剂主要应用于木材加工业，较少应用于纸板粘结。 Currently, soy-based adhesive is mainly used in wood processing industry, less adhesive applied to cardboard.本实验用超声波辅助尿素改性大豆蛋白粉，制取大豆蛋白胶粘剂，粘结纸板；系统研究了蛋白质浓度、尿素浓度、处理时间、处理温度、超声波处理时间对大豆蛋白胶胶粘强度的影响。 In this experiment, ultrasonic urea modified soy protein powder, preparation of soybean protein adhesive, adhesive cardboard; system protein concentration, urea concentration, treatment time, temperature, ultrasonic treatment time on the soybean protein gel adhesive strength. 本实验为大豆基胶粘剂的广泛应用提供了新的思路。 In this study, soy-based adhesive for the Pan-wide  may provide a new way of thinking.

你的问题我们无法正确的给出你答案，请去别的网站上查询。给你带来的不便请谅解