The approaches for promoting PP adhesion based on the surface modification

Polymer Surface Oxidation by Light-Activated Chlorine Dioxide Radical for Metal–Plastics Adhesion

“…The development of plastic/metal composite materials, which involve adhesion of plastic and metal plate and/or electroless metal plating on plastic, is one of the most significant technologies on account of their light weight, high recyclability, steady physical properties, and low production cost. For example, the superior properties of heat resistance, corrosion resistance, and high mechanical strength to weight ratio allow polypropylene (PP)–metal composites to be widely used in various fields, such as in the manufacture of automotive, electronics, and packaging. − In general, however, because of the low adhesion strength of nonpolar PP to hydrophilic metals, it is necessary to modify PP surfaces to increase surface energy without any change in their bulk properties.…”

A new type of rack for the clamp ammeter

“…The wire through which the measured current passes can pass through the open gap of the iron core without cutting off. When the wrench is released, the iron core is closed [1,2] . The tested circuit wire passing through the iron core becomes the primary coil of the current transformer, and the current passing through induces the current in the secondary coil, so that the ammeter connected to the secondary coil can measure the current in the tested wire.…”

A Decision Tree Method Based on Support Vector Machineto Identify Egg Embryo

“…1. By observing the image of four types of egg embryo carefully, we can find out the main features of the four types of egg embryo: (1) The living embryo has more and thicker blood-vessels; (2) The weak embryo has less and thinner blood-vessels; (3) The pollution embryo has obvious black object inside; (4) The interior of dead embryo is even without blood-vessels or black object [3]. According to the four types of egg embryo, it is better to reduce the number of features when we design the classifier and extract the main independent component of the internal characteristics from egg embryo.…”

“…The theory has a solid basis and a rigor mathematical deduction, and has incomparable advantages in solving the problem of nonlinear and high dimensional pattern of recognition. At present, the support vector machine has been used more and more widely in pattern recognition fields, such as digital identification, face recognition, biological recognition and 3D object recognition, etc, and has obtained good recognition effect [2]. Due to the good performance support vector machine shows in the pattern recognition, this paper mainly studies a decision tree method based on support vector machine to identify egg embryo, and extracts the main independent component of egg embryo internal feature on the basis of the principal component analysis.…”