810酯/古马隆树脂并用对氢化丁腈橡胶性能的影响

研究液体邻苯二甲酸正辛正癸酯（810酯）/固体古马隆树脂并用比对氢化丁腈橡胶（HNBR）性能的影响。结果表明：810酯的增塑效果比古马隆树脂好;随着810酯/古马隆树脂并用比（总用量12份）减小,胶料的焦烧时间变化不大,硫化速度加快,硬度、拉断伸长率和粘合性能提高,拉伸强度略有下降,定伸应力和耐热老化性能先提高后降低;810酯/古马隆树脂并用比为8/4时,胶料的综合性能较好。     

大豆油对丁腈橡胶增塑作用的研究

以环保大豆油用作丁腈橡胶(NBR)增塑剂,研究其用量对NBR胶料门尼粘度、流变性能和物理性能的影响,并与增塑剂261进行对比。结果表明:与增塑剂261增塑NBR胶料相比,大豆油增塑NBR胶料的门尼粘度和表观粘度较小,增塑效果和加工性能较好;当增塑剂用量为5份时,大豆油增塑NBR硫化胶的拉伸强度和拉断伸长率较大;但随着增塑剂用量的增大,大豆油增塑NBR硫化胶的物理性能变差。     

SBR耐老化性能的研究

试验研究硫化体系、防护体系、增塑体系和补强体系的组成和用量对SBR硫化胶耐老化性能的影响。结果表明，配方为SBR 100，炭黑N220 50，氧化锌3，硬脂酸2，古马隆树脂5，防老剂MB 0．5．防老剂RD 0．5，机油3，硫黄1．5，促进剂CZ 1．促进剂TMTD 0．2时，SBR胶料的硫化特性、物理性能和耐老化性能均较好。     

生物基反应性增塑剂大豆油对三元乙丙橡胶增塑效果的研究

探讨大豆油对三元乙丙橡胶（EPDM）的增塑效果。大豆油作增塑剂的EPDM胶料比石蜡油作增塑剂的EPDM胶料门尼黏度低,加工性能好。当增塑剂用量小于15份时,大豆油作增塑剂的EPDM胶料物理性能优于石蜡油作增塑剂的胶料。大豆油用量较大时,应提高硫化剂DCP用量。大豆油对EPDM的增塑效果优于石蜡油,其增塑机理符合反应性增塑机理。     

增粘树脂对NR/BR并用胶性能的影响

研究了松香、古马隆、酚醛树脂、C5树脂及环氧树脂对NR/BR并用胶性能的影响,通过对胶料硫化特性、工艺性能及硫化胶物理机械性能的测试。试验结果表明,几种增粘树脂均具有软化增粘的作用,能降低胶料的门尼粘度,提高胶料的塑性,改善加工工艺性能,对胶料硫化特性影响不大;酚醛树脂能增加胶料的硬度和拉伸强度;加入C5树脂可以提高胶料的撕裂强度和耐磨性;环氧树脂的加入能缩短加工工序、降低混炼能耗,胶料的弹性最好。     

古马隆树脂对HNBR性能的影响

采用古马隆树脂为填充剂制备了氢化丁腈橡胶(HNBR)复合材料,研究了古马隆用量对HNBR复合材料硫化特性、物理性能、动态力学性能的影响。结果表明,古马隆树脂具有交联、补强和增塑三重作用。随着古马隆用量的增加,混炼胶的门尼粘度逐渐提高,硫化胶的拉断伸长率明显提高。玻璃化转变温度(Tg)和储能模量(E′)提高。当古马隆用量为5份时,损耗因子(tanδ)最小,拉伸强度和100%定伸应力最大。当古马隆用量为7.5份时,撕裂强度为79.1kN/m。     

RX-90树脂在胶鞋配方中的应用

将松香改性芳烃树酯分别在黑色大底、浅色大底及白色围条配方中部分代替古马隆树脂、减半代替古马隆树脂及等量代替二甲苯树脂，对胶料的工艺性能，硫化特性及成品的物理性能均无不良影响，并有一定经济效益。     

RX－90树脂在胶鞋配方中的应用

将松香改性芳烃树脂（ＲＸ－９０树脂）分别在黑色大底、浅色大底及白色围条配方中部分代替古马隆树脂、减半代替古马隆树脂及等量代替二甲苯树脂（ＲＸ－８０树脂），对胶料的工艺性能、硫化特性及成品的物理性能均无不良影响，并有一定经济效益。     

深海电缆护套用橡胶材料的性能研究

针对全海深工作环境对深海电缆护套用橡胶材料的使用性能要求,研究氯丁橡胶(CR)胶料和CR/天然橡胶(NR)并用胶的物理性能、绝缘性能、耐海水老化性能和挤出性能。结果表明:与牌号为Denka Chloroprene A-90的硫黄调节型和牌号为CR322的混合调节型CR相比,牌号为CR232的非硫黄调节型CR物理性能优异,更适合用作深海电缆护套胶料的主体材料;CR/NR并用胶(并用比80/20)的绝缘性能好,体积电阻率可达1.3×10~(12)Ω·cm,且物理性能和耐海水老化性能好;以固体古马隆树脂/白油膏为增塑剂的CR/NR并用胶挤出表面光滑、挤出膨胀率小,是深海电缆护套的优选橡胶材料。     

用石油树脂代替古马隆树脂作橡胶软化剂的研究

将等量的石油树脂和古马隆树脂分别配制成橡胶胶料，在同等条件下炼胶、硫化，按照橡胶软化剂的性能采用古马隆树脂胶的分析标准进行检测。经实验数据的对比分析，证实了石油树脂作为橡胶软化剂，完全可以代替古马隆树脂，而且优于古马隆树脂。     

Novel applications of lignin in composite materials

Some exploratory work was done to look at novel applications, such as filler use and comonomers, for lignin in thermosetting unsaturated polyesters and vinyl esters. The solubility of different lignins (pine kraft, hardwood, ethoxylated, and maleinated) was determined in different resin systems (acrylated epoxidized soybean oil, hydroxylated soybean oil, soy oil monoglyceride, and a commercial vinyl ester) to give an idea of the compatibility of lignin with the resin systems that were used. Further, the use of lignin as a filler was studied. An increase in the glass‐transition temperature was noticed, and the modulus at 20°C decreased because of the plasticizing effect of lignin. The lignin was modified to improve its effect on the matrix properties by adding double bond functionality, thus making it possible to incorporate the lignin molecule in the resin through free‐radical polymerization. Modified lignin was introduced in several resins by a reaction with maleic anhydride and epoxidized soybean oil and was tested for its effect on the solubility, glass‐transition temperature, and modulus. This modification improved the solubility of lignin in styrene‐containing resins, as well as the chemical incorporation of lignin in the resin. Moreover, lignin was used to treat the surfaces of natural hemp fibers to utilize lignin's natural affinity for cellulosic fibers. The idea was to cure the surface defects on the natural fibers and increase the bonding strength between the resin and fiber. An optimum improvement was noticed that depended on the amount of lignin covering the fibers. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 323–331, 2002     

吸油树脂对天然橡胶性能的影响

研究了吸油树脂用量对天然橡胶(NR)的吸油率、硫化特性及物理机械性能的影响。结果表明,吸油树脂会对NR胶料产生硫化迟延作用;吸油树脂会增加NR的吸油率并随着吸油树脂和吸油时间的增加,同时能改善吸油胶料的表面质量;随着吸油树脂和吸油时间的增加,胶料物理机械性能下降。     

环氧树脂增强天然橡胶/顺丁橡胶并用胶的性能

采用低相对分子质量的液体环氧树脂(EP)与固化剂混合作为增强体的前驱体,比较了其填充天然橡胶(NR)、顺丁橡胶(BR)及两者并用胶的物理机械性能,考察了EP用量对并用胶及炭黑增强并用胶物理机械性能的影响,并通过扫描电子显微镜表征了填充后的NR、BR及并用胶的微观相态结构。结果表明,EP的加入均可提高NR、BR、NR/BR并用胶的物理机械性能,其中并用胶的拉伸强度提高幅度最大;当EP用量约为24份时,NR/BR并用胶的综合性能最佳;EP可以提高炭黑增强NR/BR并用胶的物理机械性能,但提高幅度不大;EP在NR/BR并用胶中呈现规整的圆球形状,直径为1.0～2.5μm。     

高吸油性树脂的合成、性能与应用

对高吸油性树脂的吸油机理、吸油特点及其常用的合成方法进行了综述，并对影响树脂性能的各因素进行了描述，介绍了高吸油性树脂在三废处理，芳香剂基材、渔网防污剂基材及合成树脂的改性添加剂等方面的应用。     

Plasticization effects of epoxidized vegetable oils on mechanical properties of poly(3‐hydroxybutyrate)

The effect of various epoxidized vegetable oils as potential plasticizers for poly(3‐hydroxybutyrate) (PHB) was evaluated in terms of changes in mechanical and thermal properties and morphology. PHB is a biodegradable aliphatic polyester obtained from bacterial fermentation. High stiffness and fragility are two of its main drawbacks. To overcome this behaviour, PHB was plasticized with various amounts of two different epoxidized vegetable oils: epoxidized linseed oil (ELO) and epoxidized soybean oil (ESBO). The total ELO and ESBO content varied in the range 5 phr (per hundred resin) to 20 phr and plasticized PHB materials were obtained by melt extrusion and compounding followed by injection moulding. The results show that the plasticizing effect provided by ELO is more efficient than that by ESBO with balanced properties at a concentration of 10 phr ELO. ELO addition leads to an improvement in mechanical ductile properties with a noticeable increase in elongation at break and impact absorbed energy. With regard to thermal properties, the addition of both ELO and ESBO leads to a marked increase in thermal stability of PHB. All these findings suggest that addition of 10 phr ELO leads to optimized PHB formulations with potential uses in technical applications. © 2016 Society of Chemical Industry     

A comparative study of cardanol and aromatic oil as plasticizers for carbon‐black‐filled natural rubber

Cardanol is the main ingredient of cashew nut shell liquid, an agro‐byproduct. Its comparative merits vis‐a‐vis aromatic oil for plasticizing HAF‐black‐filled natural rubber (NR) is the subject of this article. Aromatic oil is the conventional plasticizer employed for such compounding requirements. The mechanical properties, ageing behavior, and torque time curves during cure of NR plasticized by both these materials are compared under identical conditions. It has been established that cardanol, when used as plasticizer, gives rise to similar tensile properties, shorter cure times, and superior ageing behavior compared to aromatic oil. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 4835–4841, 2006     

松香改性豆油酸醇酸树脂的合成研究

以大豆油脚为原料提取豆油脂肪酸,并依此研究了松香改性豆油酸醇酸树脂的合成.获得的树脂和漆产品性能良好,降低了污染和能源消耗,较天然桐油和亚麻油等原料有明显优势,经济效益高.     

LIR对NR/BR混炼胶加工性能的影响

采用RPA2000橡胶加工分析仪研究液体聚异戊二烯（LIR）、芳烃油和LIR/芳烃油并用体系对NR/BR混炼胶加工性能的影响.结果表明,LIR和LIR/芳烃油并用体系均能有效改善NR/BR混炼胶的加工性能,且后者的增塑效果较LIR或芳烃油单用时更为显著,其对应的混炼胶粘度较小,工艺能耗和成本较低;LIR/芳烃油并用体系对应的NR/BR硫化胶性能良好,炭黑在其中的分散性也较好.     

高吸油性树脂的合成与应用

对高吸油性树脂的吸油机理、吸油特点及其常用的合成方法进行了综述，并对树脂性能的各影响因素进行了描述，介绍了高吸油性树脂在三废处理、芳香剂基材、渔网防污剂基材及合成树脂的改性剂等方面的应用。