Polyolefin waterproof and breathable membrane, low-cost replacement of PTFE, PVDF, PES membrane new

The polyolefin waterproof and breathable membrane is the latest innovative technology of our company. The polyolefin waterproof breathable membrane is manufactured by mechanical biaxial stretching and chemical phase separation, combined with hot pressing composite technology. It is a selectively permeable film Under the condition of its own characteristics, some gases smaller than the pore size of the polyolefin waterproof and breathable membrane can pass through, but other particles such as water droplets larger than the pore size of the polyolefin waterproof and breathable membrane can not pass through. It is precisely because of the properties of the polyolefin waterproof and breathable membrane that some small molecular particles can pass through, and some macromolecular particles cannot pass through the polyolefin waterproof and breathable membrane. Its appearance has greatly reduced the cost of membrane raw materials. At present, it can partially or completely replace filter membranes such as PTFE membranes, PES membranes, PVDF membranes, and PAN membranes. In addition to being sensitive to some strongly corrosive substances, polyolefin waterproof and breathable membranes It has good chemical stability, hydrophobicity and gas permeability.

The polyolefin waterproof and breathable membrane is mainly composed of a microfiltration membrane with a pore size between 0.03-20μm. For polyolefin waterproof and breathable membranes, water inlet pressure and air flow are two very important values. Under normal conditions, the two are in a competitive relationship, and high air flow means low water inlet pressure. Under normal conditions, many devices and their applications require a relatively closed environment, which cannot be affected by external dust, water, and bacteria. If it is designed to be particularly closed, under the objective conditions of environmental temperature and latitude changes, it will cause pressure changes inside the device. Usually, this pressure change will produce a certain concentration effect, which will damage the device casing and internal sensitive components. The use of polyolefin waterproof and breathable membrane can continuously balance the pressure difference of the equipment, reduce the cost of component design, and ensure the reliability and reliability of the product.

Like PTFE membranes, PVDF membranes, and PES membranes, polyolefin waterproof and breathable membranes have many uses, mainly in the fields of electronics, automobiles, packaging, semiconductors, and the environment. The purpose is to do a good job of dustproof, waterproof, breathable and heat dissipation of electronic products. The raw material of polyolefin waterproof and breathable membrane has good dustproof, waterproof, breathable and heat dissipation properties; it can release water vapor from the inside of the product well, avoiding water vapor condensing into liquid water inside, which will cause the circuit board to be short-circuited and cause failure The polyolefin waterproof and breathable membrane also has good dustproof performance, because the particle size of the material used is that the micropore diameter is far smaller than the particle size of dust and other particles, and dust and the like cannot pass through. The heat dissipation performance of polyolefin waterproof and breathable membrane is good because the raw material of polyolefin waterproof and breathable membrane is formed by expanded and stretched polytetrafluoroethylene, which has many micropores. The diameter of these micropores is larger than that of air molecules, so the gas can be exchanged normally. , In this way, the heat generated by the internal gas bar is taken out, and then the external cold air enters, so it is a dynamic balance.

This kind of polyolefin waterproof and breathable membrane material processing products will also be used in automobiles and electronic products. Because some parts of the car are a closed space, sometimes in order to prevent rainwater from entering, waterproof and breathable materials are used to help these sealing components to be waterproof, while maintaining enough air permeability, so that the sealing parts in the car are always In good condition, it also gives full play to the function of the polyolefin waterproof and breathable membrane. The use of polyolefin waterproof and breathable membranes is not limited to these, and new attempts are being made in many fields. For example, in some special categories, with the help of polyolefin waterproof and breathable membranes, some previous difficult problems have been solved. The previous waterproof and breathable materials can realize rain shelter or water repellency, but they often form a contradiction with breathability, either only considering waterproofness or only air permeability. However, it is satisfied in the material of polyolefin waterproof and breathable membrane, which makes everything very simple. According to actual requirements, waterproofness can be taken into account while doing a good job of breathability.

The new polyolefin waterproof and breathable film processing products are more and more recognized by consumers, and are widely used in various industries, such as electronic sensors in the electronics industry, mobile phones, computer hard drives, digital cameras, printers, cameras and other products. Functions of electronic polyolefin waterproof and breathable membrane: 1. Waterproof, dustproof and oil-proof. 2. High and low temperature resistance, anti-aging, etc., to improve the reliability of the product in harsh environments. 3. Prevent condensation and fogging and improve the service life of the product. 4. The electronic polyolefin waterproof and breathable membrane can do a good job of heat dissipation and balance the pressure difference inside and outside the product, improving the integrity of product design and manufacturing.