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Synthesis of eugenol-modified epoxy resin and application on wood flame retardant coating
Wood Flame retardant Bio-based epoxy resin Low curing activation energy
2023/11/30
In this paper, a novel epoxy flame retardant PPDEG-EP (P-E) was synthesized from eugenol by nucleophilic substitution reaction and Prilezhaev epoxidation. The chemical structure was identified by nucl...
Exploring the effects of bound rubber phase on the physical properties of nano-silica composites with a vitrimer-like bond exchangeable matrix
DYNAMIC COVALENT CHEMISTRY CROSS-LINK DENSITY MECHANICAL-PROPERTIES POLYMER NANOCOMPOSITES
2023/11/30
We demonstrate the preparation and unique properties of composite vitrimer-like materials containing silica nanoparticles (SNPs). The matrix is composed of polyacrylate-based polymers crosslinked via ...
A Novel Polyvinyl Alcohol-Based Hydrogel with Ultra-Fast Self-Healing Ability and Excellent Stretchability Based on Multi Dynamic Covalent Bond Cross-Linking
dynamic covalent bonds hydrogels self-healing strain sensors
2023/11/30
A novel self-healing poly(vinyl alcohol) (PVA)-based hydrogel is developed by cross-linking PVA chains through multi dynamic covalent bonds by use of a small cross-linker composed by 4-formylphenylbor...
Fast and Reversible Photoresponsive Self-Assembly Behavior of Rosin-Based Amphiphilic Polymers
rosin amphiphilic polymers photo-responsive self-assembly morpholog y evolution
2023/11/30
Designing stimulus-responsive amphiphilic polymers with a fast photoresponsive self-assembly behavior remains a challenge. Two series of rosin-terminated and azobenzene-terminated amphiphilic polymers...
Fatigue of amorphous hydrogels with dynamic covalent bonds
Hydrogel Amorphous polymer network Anti-fatigue Dynamic covalent bond
2023/11/30
Hydrogels composed of amorphous polymer networks are widely used as soft and stretchable components in diverse devices and machines. However, existing amorphous hydrogels are susceptible to fatigue fr...
Mechanical properties of carbon nanotubes/epoxy nanocomposites: Pre-curing, curing temperature, and cooling rate
Carbon nanotubes curing epoxy mechanical properties nanocomposites polymer nanocomposites
2023/11/30
The effects of composite fabrication, such as pre-curing, curing temperature, and cooling rate, were studied. In this work, the pre-curing was defined as heat treatment of Multi-Walled Carbon Nanotube...
以油茶Camellia olelfera籽油为研究对象,活性炭为脱色原料,采用水浴恒温混合振荡法对油茶籽油色泽进行脱除,并探讨了脱色温度、时间及活性炭和油茶籽油配比对油茶籽油脱色程度和酸价、过氧化值的影响。结果表明,脱色时间是影响油茶籽油脱色程度、酸价和过氧化值的主要因素,最佳脱色时间为20 min;脱色温度是影响油茶籽油脱色、降低酸价和过氧化值效率的主要因素,最佳脱色温度为60℃;活性炭与植物油...
本发明属于生物质废弃物高值化转化应用领域，具体涉及一种利用二氧化碳强化木质素热解制备酚类化合物和高品质碳材料的方法。所述方法包括以下步骤：脉冲助力下木质素进入反应器（8），经过流化气体（9）（CO 2 和N 2 ）和热木质素炭床层（12），降解木质素，热解气经分级冷凝器得到干生物油。CO 2 的引入不仅减少了热解过程所需的外部热量，还活化了生物炭，BET比表面积超过200 m 2 /g。此外，木质...
西北农林科技大学专利：一种基于生物酶预处理漂白泡桐的方法
西北农林科技大学 生物酶 预处理 漂白泡桐
2023/11/24
本发明属于化学漂白预处理技术领域，具体涉及一种基于生物酶预处理漂白泡桐的方法，该方法采用以速生泡桐为主要材料，利用二代纤维素酶在常温条件下对原料进行预处理，采用NREL方法测定其主要组分，并通过热重分析、扫描电镜、X射线衍射等化学和物理方法验证预处理材料的化学组分、热稳定性变化规律以及微观结构特性变化特征，并通过温度梯度和pH梯度和时间点变化进行组分结构特性研究，预处理泡桐的较优预处理条件参数。本...
中国林业科学研究院经济林研究所专利：一种苦杏仁蛋白的提取方法
中国林科院经济林所 苦杏仁蛋白 提取方法
2023/11/20
本发明公开一种苦杏仁蛋白的提取方法，包括如下步骤：步骤(1)、将苦杏仁脱皮脱苷，得到脱苷苦杏仁；步骤(2)、将脱苷苦杏仁进行脱脂，得到脱脂苦杏仁；步骤(3)、利用碱溶酸沉法与等电点‑盐析相结合的方法提取脱脂苦杏仁中的苦杏仁蛋白，得到苦杏仁蛋白沉淀；步骤(4)、对苦杏仁蛋白沉淀进行纯化，即得到苦杏仁蛋白。本发明能够解决杏仁蛋白提取过程中由于多酚类物质的氧化而导致蛋白颜色变化的问题。
中国林业科学研究院经济林研究所专利：一种将柿果转化为生物能源乙醇的方法
中国林科院经济林所 柿果 生物能源 乙醇
2023/11/20
本发明公开一种将柿果转化为生物能源乙醇的方法，包括如下步骤：将清洗好的柿果利用破碎及过滤装置依次进行破碎和过滤，除去浆液中的固形杂质，得到原浆液；向原浆液中加入食用碱，使食用碱与原浆液中的单宁反应形成不溶于水的物质，并将形成的不溶于水的物质过滤去除；先用水稀释经碱处理后的原浆液，得到稀释浆液，并调节稀释浆液的pH；加入糖化酶，保温后得到待发酵液；向待发酵液中加入已活化的发酵母液进行发酵，发酵得到发...
本发明公开一种杏仁多肽防晒保湿护肤品及其制备方法，该杏仁多肽防晒保湿护肤品中杏仁抗氧化肽YLSF的含量为2～8mg/mL；制备时，以水为溶剂，添加杏仁抗氧化肽YLSF即可制备得到杏仁多肽防晒保湿护肤品。本发明的杏仁多肽防晒保湿护肤品添加了苦杏仁抗氧化肽YLSF，能够有效避免紫外线照射给皮肤带来的损害，具有较好的防晒保湿效果。
Layer-by-layer assembly of nanomultilayer structures: Reinforcement of expanded char reduced the toxicity and fire hazard of epoxy resins
Epoxy resin Fire safety Intumescent flame retardant Smoke suppression Flame retardancy
2023/11/16
Epoxy resins (EP) have been widely applied in chemical engineering, composite materials, and aerospace. Nevertheless, the high fire hazard of flammable epoxy resins, which release considerable hazardo...
A facile strategy to construct multifunctional microencapsulated urea ammonium polyphosphate for epoxy resins towards satisfied fire safety, thermal stability and compatibility
epoxy resin fire safety mechanical properties microencapsulation urea ammonium polyphosphate
2023/11/16
Enhancing the fire safety of epoxy resin (EP) concomitant with less mechanical performance degradation is still a challenge for traditional flame retardants. Hence, polypyrrole (PPy) was used as a fil...
Low-temperature 3D printing and curing process of continuous fiber-reinforced thermosetting polymer composites
3D printing CFRTPC curing behavior prediction low-temperature process model-free kinetics
2023/11/16
The reported work has developed a methodology of printing and curing continuous fiber-reinforced thermosetting polymer composites (CFRTPCs) with excellent mechanical properties at low temperatures. Fi...