Abstract: A polyalkyl p-phenylenediamine antidegradant having a structure represented by Formula I, its intermediates and a preparation method thereof are provided. The polyalkyl p-phenylenediamine antidegradant provides good thermal oxidative aging resistance and UV aging resistance.

Abstract: A rubber antidegradant having a structure represented by Formula A and a method for preparing the same are provided. The rubber antidegradant of the present invention may impart rubber good thermal oxidative aging resistance, ozone aging resistance, discoloration resistance, and durable performance.

Abstract: A polyalkyl p-phenylenediamine antidegradant having a structure represented by Formula I, its intermediates and a preparation method thereof are provided. The polyalkyl p-phenylenediamine antidegradant provides good thermal oxidative aging resistance and UV aging resistance.

Abstract: A polyalkyl p-phenylenediamine antidegradant having a structure represented by Formula I, its intermediates and a preparation method thereof are provided. The polyalkyl p-phenylenediamine antidegradant provides good thermal oxidative aging resistance and UV aging resistance.

Abstract: The present invention provides a compact intelligent loading and unloading device of a numerical control turret punch press, comprising mounting frames, a palletizing platform, a mobile station, a feeding device, a lifting and reclaiming device and a central control module. The device can reduce the difficulty of a feeding device for clamping the sheet material through a clamp by lifting the sheet material with a certain angle at the front end of a mobile station. The device can also enhance the uniformity of the sheet material on a palletizing platform by arranging a limiting device on the palletizing platform, thereby reducing the probability of slippage of the sheet material on the palletizing platform.

Abstract: A method of data decryption for the physical image of a flash memory chip includes the following steps: 001—Zero-filling the logical data of a USB flash drive to obtain the physical data, removing the management bytes in the physical data to obtain a key; 002—Dividing area for the key according to the structure of the flash memory chip to obtain the algorithm of the main control key. The way of data storage is discovered through multiple experiments: The data stored on the chip is the data generated from the XOR operation on the logical data with the key from encryption algorithm. All the keys generated by the main control are obtained through zero-filling of the logical data, and their encryption method can be obtained through simple analysis on all the keys. The data extracted from the flash memory chip when the USB flash drive is damaged will be readable.