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以秸秆腐熟剂(处理Ⅰ)、腐熟堆肥(处理Ⅱ)为添加剂,采用堆肥处理法改性水稻秸秆纤维的加工性能。结果表明:采用处理Ⅰ、Ⅱ和不加添加剂堆肥处理(处理Ⅲ)后,秸秆堆体的平均温度分别为39.5、43.7和35.5℃,堆积角、压缩率、抹刀角和均匀度降低;Carr流动性指数评价法表明,处理Ⅱ的秸秆纤维粉为易于流动,处理Ⅰ的秸秆纤维粉为一般流动,处理Ⅲ和未对秸秆纤维堆肥处理(处理Ⅳ)的秸秆纤维粉为不易流动;堆肥处理提高了秸秆纤维的塑性和表观黏度,处理Ⅰ和处理Ⅱ的秸秆纤维的塑化峰增加、粒径和纤维间摩擦阻力变大、常温压缩性降低;处理Ⅰ、Ⅱ、Ⅲ和Ⅳ的秸秆纤维质量残留率分别为39.4%、49.4%、33.5%和31.9%,秸秆纤维热稳定性提高。堆肥处理改善了秸秆纤维的加工性能,为秸秆纤维的加工利用提供了一种预处理方法。
Using straw composting (treatment Ⅰ) and composting (treatment Ⅱ) as additives, the processing properties of rice straw fiber modified by composting treatment were studied. The results showed that the average temperature of straw heap was 39.5, 43.7 and 35.5 ℃, and the stacking angle, compressibility, spatula angle and evenness decreased with the treatment of treatments Ⅰ and Ⅱ and without additives (treatment Ⅲ) The liquidity index evaluation method showed that the straw fiber powder of treatment II was easy to flow and the straw fiber powder of treatment Ⅰ was in general flow, and straw fiber powder of treatment Ⅲ and non-straw fiber composting treatment (treatment Ⅳ) was not easy to flow; The plasticity and apparent viscosity of straw fiber increased, the plasticization peak of straw fiber of treatment Ⅰ and treatment Ⅱ increased, and the frictional resistance between particle size and fiber became larger and the compressibility decreased at room temperature. The treatment of straw Ⅰ, Ⅱ, Ⅲ and Ⅳ Residual fiber quality were 39.4%, 49.4%, 33.5% and 31.9% respectively, and the thermal stability of straw fiber increased. Composting improved the processing performance of straw fiber and provided a pretreatment method for the processing and utilization of straw fiber.