The first point is what the difference between alkaline battery and non-alkaline batteries is?
Although both alkaline and non-alkaline batteries are derived from the same chemical composition, their performance functions are very different. For example, alkaline battery are heavier, while non-alkaline batteries are slightly lighter. The two types of batteries include AA, AAA, C, D, and 9V batteries, and they can be used as long as the correct type is selected.
Alkaline battery use different electrolytes from non-alkaline batteries. For example, alkaline battery use potassium hydroxide (chemical formula KOH, also known as caustic potassium or caustic alkali, which is also the origin of the "alkaline" name), while non-alkaline batteries may use zinc chloride (chemical formula ZnCl2, Also called zinc chloride powder). The chemical composition of these electrolytes is different, and the chemical reactions that occur are also different. Due to the nature of the electrolyte, the alkaline battery is more durable.
The most obvious difference between alkaline and non-alkaline batteries is the amount of power they can provide. Carbon batteries are not as durable as alkaline battery. The durability of alkaline battery is 6 to 9 times longer than that of traditional carbon batteries. Moreover, alkaline battery are more environmentally friendly because they do not contain harmful substances such as mercury, cadmium, and lead, making them a very "green" product.
The second point is the advantages of alkaline battery.
1. Alkaline battery can be used in extremely high and extremely low temperature environments, while carbon batteries cannot. In high and low temperature environments, the efficiency of carbon batteries is greatly reduced. For electrical appliances that are often used outdoors, it can be clearly seen from here.
2.Alkaline battery have unique environmental advantages and do not contain harmful components such as lead, mercury and cadmium, so waste batteries will not cause serious damage to the environment.
International Business Daily, October 8th. On September 26th, it was confirmed that a batch of memory cards and mobile storages seized by Shenzhen Customs Airport Customs in the export channel had been seized. The seized items violated Shenzhen Langke Technology Co., Ltd. Patent intellectual property. It is reported that this is the first patent infringement case seized by the National Customs since the launch of Operation Longteng.
On September 19 this year, through the deployment control, Shenzhen Airport Customs found that during the inspection of UPS export shipment channels, a company declared that a group of memory cards and mobile storage exported to the United States had allegedly infringed Netac's patents. The customs officer immediately issued a notice to Shenzhen Langke Technology Co., Ltd. and asked the right holder to verify it. "Netac is one of the first key enterprises participating in the" Long Teng "operation in the country. They first developed mobile storage technology and flash memory technology, and filed patent rights in the General Administration of Customs. Other companies use this technology to produce mobile storage. Equipment needs to be authorized by Netac, otherwise there is suspicion of infringement. "Shenzhen Customs Regulations said," In the past, customs' intellectual property protection of enterprises was mainly in trademark rights. This time, we successfully intercepted goods that infringed on the company's patent rights and realized New breakthroughs. "" Patents are the core competitiveness of enterprises, but it is difficult to obtain patents. It is difficult to implement patent protection. The recent peak season for flash disk shipments, the customs has accurately controlled this batch of goods. Established a fast mechanism for confirming rights with us, blocked the sales channels of infringing products, and protected our legitimate rights and interests. "Said Bi Kun, Intellectual Property Operation Manager of Netac.
In addition to Netac, Huawei, ZTE, DJI and other 10 export-leading intellectual property companies are also the key protection targets selected by Shenzhen Customs. According to the Shenzhen Customs Regulations Office, with the transition from "Made in China" to "Created in China", more and more national brands in China have successfully "goed to sea" and developed into "World Brands." In order to protect them, the Customs has cracked down on infringement. Export goods. Shenzhen Customs also made a combination of "quick, accurate, and ruthless"-
Capture "quasi". On September 26, Shenzhen Customs, as one of the four pilot customs nationwide, took the lead in launching the "Internet of Things Intellectual Property Intellectual Property Mark Intelligent Identification System" APP. Inspection officers at the inspection site can use this new intelligent auxiliary tool to shoot and compare trademarks and obtain corresponding IP filing information. In addition, Shenzhen Customs has also strengthened joint research and judgment on the risks of export infringing goods to achieve a precise blow.（Shipping Company in China）
Deal with "quick". Accelerate the progress of case handling and the disposal of infringing goods. In cases where the infringement facts are clear, the tort evidence is clear, and the parties have no objection, in principle, the determination of infringement will be made within 30 working days from the date of detention of the goods and within 5 working days Put forward opinions on the disposal of goods to reduce the pressure on enterprises to protect their rights. Establish a WeChat group of “Long Teng” operation key enterprises and customs, and provide “personal”, timely and personalized services to key enterprises. With reference to the relevant provisions of the court on electronic delivery, explore the use of electronic mailboxes and other methods for the delivery of intellectual property cases to improve the efficiency of case handling.
Crack down on "ruthlessness", increase punishment for seized cases of infringement on the intellectual property rights of key enterprises, and strengthen cooperation with the Municipal Public Security Bureau, the courts, and the Intellectual Property Office to become a "guardian" of intellectual property rights for Shenzhen enterprises at the border. , And integrated into the city's intellectual property "protection network" and work together. (Yin Xiao Zhang Xiaoxi)
Regardless of whether the substrate is plastic, paper or cloth, the adhesive force of the duct tape comes from the layer of adhesive on the surface of the substrate. The physical properties of the adhesive directly determine the adhesive force of the tape. Of course, there are many types of tapes, roughly divided into pressure-sensitive tapes, water-activated tapes, heat-sensitive tapes, etc. Among them, pressure-sensitive tapes are the most used in our lives. They do not need special treatment or activation, and only need to be pressed to a certain extent The adhesive effect can be achieved. The main problem is the pressure-sensitive adhesive of the duct tape, which is also called self-adhesive.
Pressure sensitive adhesive is a kind of polymer material with extremely high viscosity and certain elasticity, such as acrylate polymer, rubber, silicone rubber and so on. The adhesiveness of the tape is a strict physical process, divided into two steps of infiltration and adhesion, and the viscoelasticity of the polymer. It plays an important role here: First of all, the viscous adhesive has certain liquid properties, and the surface energy of the adhesive molecule is very low, which makes the adhesive can easily infiltrate the surface of the object, and the elasticity makes When pressed, the adhesive molecules can gather together instead of being squeezed aside; then, the adhesion process is the result of the cohesion and adhesion of the adhesive.
There are some duct tapes, the longer the sticking time, its adhesion will increase. This is because the adhesive needs a longer time to better wet the surface of the object and "flow" into the holes and grooves. In addition, some people think that the duct tape is just a tape coated with glue. This statement is completely wrong, because the glue is completely in the form of liquid, so as to achieve excellent wettability, and its cohesion and adhesion, It can only be manifested after it is air-dried. Moreover, glue bonding is an irreversible process. Once torn apart, it cannot be re-bonded; and during the entire cycle of duct tape bonding, the adhesive maintains viscoelasticity, which is a Partially reversible process.
Alkaline battery is most famous for their alkaline electrolyte. Like all dry batteries, the structure of alkaline battery is mainly composed of anode and cathode of the battery, and electrolyte. The common shape of alkaline battery is cylindrical. The specific structure of the alkaline battery and the analysis of its constituent materials are as follows:
1. Anode: Anode ring is in close contact with the outer shell, which is pressed by electrolytic manganese dioxide, graphite and carbon black duck. A nickel-plated steel shell with a anode cap on the outer shell, and the steel shell doubles as a anode current collector.
2.Cathode: The paste is made of powdered zinc particles, which is located in the middle of the lithium battery, and a brass current collector is inserted in it, which is connected to the bottom of the cathode.
3.Electrolyte: It is a paste KOH electrolyte, which is mixed with the cathode to make a paste.
4. Diaphragm and sealing ring: Inside the battery, the anode and cathode are separated by a diaphragm, and the steel shell is separated from the outside by a nylon or polypropylene sealing ring.
The structure of alkaline battery from the outside to the inside are: sealing ring, steel shell (also serving as a anode current collector), anode, diaphragm, cathode, electrolyte, copper tube (also serving as a cathode current collector), etc. In addition, there is a button-shaped alkaline battery, usually called AG battery, which is a type of button battery.
Alkaline battery of various shapes are basically the same in structure. alkaline battery are primary batteries with zinc as the negative electrode, manganese dioxide as the anode, and potassium hydroxide solution as the electrolyte.
The full name of pvc electrical tape is PVC electrical insulation adhesive tape, also known as electrical insulation tape or insulation tape. Generally, there are three types of electrical insulating tape, one is insulating black tape, the second is PVC electrical flame-retardant tape, and the third is high-voltage self-adhesive tape. Each of the three tapes has its own characteristics and functions. Therefore, when choosing electrical insulating tape, how to judge its quality?
Classification of pvc electrical tape.
The first is insulating black tape, which has good insulation properties, but is neither flame-retardant nor waterproof. It is currently only used in some civil building electrical appliances.
The second type is PVC electrical flame-retardant tape, which has three functions of insulation, flame-retardant, and waterproof, but because it is a PVC raw material, it has poor ductility and cannot wrap the joints tightly. Currently it is widely used.
The third type is high-voltage self-adhesive tape, which is generally used in higher voltages. Because of its good ductility and better waterproof performance than PVC electrical flame-retardant tape, people use it in the low-voltage category. Because its strength is a little worse than PVC electrical flame retardant tape, people like to use these two tapes together.
The quality of pvc electrical tape is distinguished.
First of all, check whether the appearance is flawed, whether the tape is rewinding for compliance, whether there are burrs in slitting, and whether the tape raw materials are smooth. However, there are many varieties of electrical insulation tape, so in most cases, it depends on its application.
Secondly, look at the glue situation of the tape. At present, most glues are developing towards environmental protection. If the smell is pungent, it is more likely to be defective. Of course, this does not refer to all tapes. Look at whether the tape is anti-adhesive when it is pulled down and used. After use, tear it off to see if there is any residual glue. If the residual glue is on the product, this is a defective tape. The detection of tape is similar, mainly depending on the condition of the adhesive. The poor quality tape will look sticky after a period of time after being wrapped, while the good quality tape will not show this problem.