The future development prospects of PVC foam board

 　　The PVC foamed sheet is produced on the CM80 conical twin-screw extrusion line introduced from Millekron in Cincinnati, Austria. The quality is very good, and the colors are gray and white. Polyvinyl chloride colored boards can be produced according to customer requirements. The colors are bright and beautiful. PVC hard board has good chemical stability, corrosion resistance, high hardness, high strength, anti-ultraviolet (anti-aging), fire and flame retardant (self-extinguishing), reliable insulation performance, smooth appearance, no water absorption, no deformation, and easy processing And other unique features. It is a good thermoforming material and can replace local stainless steel and other synthetic materials such as corrosion

　　First of all, the country is in the midst of an upsurge in environmental protection. The "14th Five-Year Plan" of Guangdong Province should promote green and low-carbon development, formulate and implement carbon emissions peaking actions, and promote carbon emissions to peak first. The green and environmental advantages of PVC foam board can guarantee its product status.

　　There is no doubt about the environmental performance of PVC foam board in the current sheet market. Its production process does not need to cut wood, nor does it need to burn coal to mine metal ore, which coincides with the national environmental protection boom. And its performance is not worse than any traditional board, which makes it more competitive in future development.

　　Secondly, it does not need to increase the cost to replace the traditional board, and it can even reduce the economic cost.

　　PVC foam board does not need to add additional cost to replace traditional board, because its own performance can be compared with traditional board, even in certain specific aspects such as acid and alkali resistance, corrosion resistance, etc. It is better than traditional boards, and even the cost reduction brought about by this performance will be popular in the market. It is applied in more and more fields, which also gives it a broad space for development.

　　In recent years, the advantageous PVC foam board has gradually attracted the attention of the market. More and more fields are willing to buy and use boards with good performance from manufacturers, which also makes the share of PVC foam board in the board market rise all the way, and the future development space is very broad.

　　In short, whether it is development opportunities based on national policies, or the advantages of PVC foam board itself and the attention of a wider range of fields, its future development is bound to be unlimited. With the investment in research and development costs, more types and higher quality PVC foam boards will enter the market, which will benefit more areas.

White PE pipe of LDPE pipe

 　What is the white PE pipe? When the customer re-constructs or purchases, they will encounter the design institute or the industry mainly designated white PE pipes. So what is the white PE pipe? Here we give an introduction to several varieties of white PE pipes.

　　One: LDPE tube

　　LDPE pipes are actually low-density PE pipes. PE itself is divided into high-density polyethylene (HDPE) and low-density polyethylene (LDPE). The color of LDPE pipes is snow-white, usually coiled pipes. However, the amount of straight pipes is gradually increasing. , LDPE pipe is mainly used for threading. It is characterized by being transparent and relatively hard. The defect is that it cannot be pulled up. It is not suitable for trenchless pipe jacking.

　　Two: HDPE pipe

　　HDPE pipes are high-density polyethylene pipes. The HDPE material itself is white. The main reason why the PE pipes we see on the market are black is that the black master is added. From the perspective of the use of pipes, the addition of After the black mother, the pipe is not clear, so that the possibility of breeding harmful bacteria is reduced. The pipe made of pure new material HDPE material is white without adding black masterbatch. This kind of pipe has the advantages of two layers of stretchability and ring stiffness, and the sanitary index is also passed, but the cost is high, so the general market will not choose it. , Unless there are special requirements, of course, it is even more unlikely to be used for power threading pipes.

　　Three: Hybrid PE pipe

　　Due to the needs of customers or owners, it is necessary that the color of the PE pipe needs to be white, so it is possible to mix LDPE and HDPE materials in the production, and perhaps also use high-quality HDPE recycled materials. Many customers here think that recycled materials are not good materials. In fact, this is a very wrong concept. Some functional indicators of the application of recycled materials in foreign countries are better than brand-new materials. The white PE pipe made with the mixed formula has good functions, and the cost is relatively low compared with pure HDPE material. It is suitable for market application and is the most mainstream non-excavation power PE pipe.

The mystery of whitening PVC foam board

 　　PVC foam board is a fireproof material for decoration. Because of its moisture-proof, weather-resistant, impact-resistant, thermal insulation, acid and alkali corrosion resistance, and flame resistance, it is widely used in indoor light partition materials, audio-visual space sound insulation materials, Fireproof materials, packaging materials for refrigeration and air-conditioning projects, roof insulation materials and furniture interior materials, etc. The PVC foam board uses polyvinyl chloride as the main raw material, and is extruded with special equipment by adding foaming agent, flame retardant, and anti-aging agent. Among them, the special fluorescent brightener for foam board is also an indispensable chemical additive in PVC foaming.

　　Since PVC is a plastic raw material that can be recycled many times, in order to reduce production costs and respond to the national resource and environmental protection call, many manufacturers will choose to use recycled and pelletized PVC materials to make new products. Although the cost has been reduced a lot, because the materials of polyvinyl chloride products are more complex, in addition to resin, there are a certain amount of auxiliary materials such as plasticizers, stabilizers, lubricants, and pigments. These additives are exposed to light and heat in the process of use, which will produce varying degrees of volatilization and loss, and PVC will also degrade to a certain extent. Therefore, when reusing recycled materials to produce foamed boards, an appropriate amount of stabilizers, lubricants and other related ingredients are required to ensure that the PVC foamed boards processed from recycled materials have good physical and mechanical properties.

　　Because the color of the recycled material turns yellow, the appearance looks particularly unattractive. In order to make the recycled material foam board as bright as new material, Zheyuan Chemical recommends that the foam board manufacturer add a special fluorescent brightener for the foam board to increase White. Fluorescent brighteners are a class of compounds that can absorb ultraviolet light and emit blue or blue-violet visible light. Many industrial products, such as textiles, paper, plastics, etc., often have a visually undesirable yellow hue. Fluorescent brighteners use the principle that blue and yellow are complementary colors to whiten the product. Adding the whitening agent for PVC foaming can remove the yellow color and make the foamed PVC look white and bright. The adding method of the whitening agent for PVC foaming is also very simple. It only needs to be added when the PVC is mixed and mixed thoroughly.

How much is a PVC foam board?

 　PVC expansion sheet is also called Chevron board and Andy board. Take polyvinyl chloride as the main raw material, add foaming agent, flame retardant, anti-aging agent, and use special equipment to extrude. It is widely used in construction, vehicle and ship manufacturing, furniture, decoration, decoration, advertising production, exhibition signs, city appearance and environmental protection, tourism and other industries. The advertising characters are made by an engraving machine or by hand, and the thickness is generally 0.3-2 cm. There are two common production methods: one is crust foaming, with a hard skin on the surface, smooth and flat; the other is free foaming, with no crust on the surface, and the surface is finely uneven (pitted surface). Common colors are white and black.

　　Chevron board is comparable to wood, and it can be sawn, planed, nailed, glued, and has special functions such as no deformation, no cracking, and no need to paint (with a variety of colors); while low-foaming boards can be welded, It is printed with ink and can also be machined by sawing, drilling, milling and other methods.

Precautions for the paint design of PVC foam board

 　PVC foam board has a smooth surface, high hardness, and is not easy to be scratched. It is often used in various industrial buildings and household productions. So what should be paid attention to when designing the paint surface of PVC foam board?

　　1. You can use the engraving machine to shape according to the design drawing, and then choose the surface to be pasted with Meinai board or paint; but the hollow foam board needs to pay attention, if the surface is uneven, you can only use vacuum overmolding. , The material should be 2mm thick PVC board.

　　2. Bending molding is only suitable for solid foamed boards, hollow foamed boards are not applicable; the processing method is to use upper and lower molds, cover the surface of the wooden mold with aluminum plates and heat the solid foamed boards to a plasticizing temperature of 70~90℃ In the meantime, the surface of the foamed board is extruded directly by the upper and lower molds without any change.

　　3. Self-adhesive PVC can provide wood grains with different patterns on the surface according to requirements during extrusion manufacturing, which can save unnecessary processing procedures.

　　4. The surface of PVC foam board can be painted, and the general category can be divided into general baking varnish, piano baking varnish, ceramic baking varnish according to different processing methods; anti-UV ingredients will be added during piano baking varnish processing to avoid surface color changes; In terms of surface hardness, ceramic baking varnish has the advantage of anti-scratch.

chenhtbb: PVC board molding characteristics

chenhtbb: PVC board molding characteristics:   　Among the materials that can produce three-dimensional surface film, PVC board is a more suitable material. Specific gravity: 1.38 g/cm3,...

PVC board molding characteristics

 　Among the materials that can produce three-dimensional surface film, PVC board is a more suitable material. Specific gravity: 1.38 g/cm3, molding shrinkage rate: 0.6-1.5%, molding temperature: 160-190°C.

　　PVC board molding characteristics:

　　1. Easily decompose, and steel at a temperature of 200 degrees. Copper contact is easier to decompose, and corrosion will escape when it is decomposed. Irritating gas. The molding temperature range is small.

　　2. When using screw injection machine nozzles, the aperture should be large to prevent dead ends from stagnating. Fortunately without inserts, if there are inserts, they should be preheated.

　　3. Amorphous material, low moisture absorption, poor fluidity. In order to improve fluidity and prevent bubbles from occurring, the plastic can be pre-dried. The mold gating system should be short and thick, and the gate section should be large, and there should be no dead corners. The mold must be cooled and the surface is chrome plated.

　　4. Due to its corrosive and fluid characteristics, special equipment and molds can be used. All products must be added with different types and quantities of additives according to needs.

　　The full name of PVC board is Polyvinylchlorid. The main component is polyvinyl chloride. It has bright color, corrosion resistance and durability. Due to the addition of plasticizers, anti-aging agents and other toxic auxiliary materials in the manufacturing process to enhance its heat resistance and toughness , Ductility, etc., so its products generally do not store food and medicine.

　　PVC board is a kind of synthetic material that is well-loved, popular and widely used in the world today. Its global usage ranks second among various synthetic materials. According to statistics, in 1995 alone, the production of PVC sheets in Europe was about 5 million tons, while its consumption was 5.3 million tons.