2results about How to "Avoid insufficient" patented technology

The invention discloses a controllable thermal expansion preparation method of a graphene oxide layer. The controllable thermal expansion preparation method comprises the following steps: S1, preparing a modified graphene oxide precursor; s2, preparing a graphene oxide layer preform; s3, gradient heating controllable thermal expansion treatment is carried out; s4, post-treatment shaping is carried out; graphene oxide is modified through an amino silane coupling agent, amino functional groups are introduced, the interlayer acting force of graphene oxide is regulated and controlled, a precursor foundation is provided for subsequent controllable thermal expansion, and the problem that thermal expansion is uncontrollable due to the fact that the interlayer acting force of a traditional precursor is unstable is effectively solved; a gradient heating thermal expansion process is adopted, the heating rate and the constant temperature time are controlled in three stages, moisture removal, functional group decomposition and deep expansion are carried out in order, local excessive expansion or insufficient expansion caused by a single heating rate is avoided, and it is ensured that the graphene oxide layer expands uniformly and the pore structure is controllable.

This utility model discloses a dripper structure for water-saving irrigation, relating to the field of irrigation equipment technology. It includes a water outlet pipe, a connector fixedly connected to the side of the outlet pipe, an inlet pipe fixedly connected to the end of the connector, an installation pipe fixedly connected to the upper part of the outlet pipe, a connecting frame installed inside the installation pipe, a spring fixedly connected to the bottom of the connecting frame, and an adjusting plug fixedly connected to the bottom of the spring. This utility model, through the coordinated design of the inlet pipe, connecting pipe, adjusting plug, and spring, achieves automatic adjustment of the water flow rate according to the inlet water pressure. It effectively solves the problems of insufficient water saving and uneven irrigation caused by the inability of traditional drippers to adapt to water pressure fluctuations, improves the stability and applicability of the drip irrigation system under different water pressure environments, and combines the technical advantages of water saving and efficiency enhancement with precise irrigation.