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Characteristics and purchase of PVC rod
Source: admin      Release time: June 12, 2020      Number of visits: second

Source: Excerpt from the Internet

      PVC rod is a kind of flame retardant material with good chemical stability and only produces low tension crack internal force. At the same time, its material characteristics also include high strength, high stiffness and high hardness, working temperature range from - 15 ℃ to 65 ℃, which can be bonded and welded.

Main features: strong corrosion resistance: most suitable for chemical industry corrosion protection equipment. Easy processing: cutting, welding and bending are very simple. High strength, high rigidity and high hardness; Good electrical insulation; Good chemical stability; It can extinguish itself; Low water absorption; Easy to bond and paint. The price is low.

Application fields: acid test manufacturing tower, seawater concentration tank, photo development equipment, electroplating tank, battery box, electric meter board, sound base cover, radio bottom plate, various electrical insulation boards, cement tank lining, locomotive wind shield, exhaust pipe engineering, stationery, building materials, etc.

PVC rod is easy to decompose, and it is easier to decompose when contacting with steel and copper at 200 ℃. Corrosion and irritant gas will escape during decomposition. The temperature range is small. PVC bar material has low moisture absorption and poor fluidity. In order to improve the fluidity and prevent bubbles, the plastic can be dried in advance. The gating system should be short and thick, and the gate section should be large without dead angle. The mould must be cooled and chrome plated on the surface. Due to its corrosion and fluidity, it is recommended to use special equipment and mould. All products must be added with different kinds and quantities of additives as required.

At present, there are mainly domestic and imported PVC rods, and domestic PVC rods are divided into two types. One is that PVC rod is made of pure PVC resin, with good rigidity, hardness and corrosion resistance; The other is PVC rod made of Recycled PVC material, easy to fracture, poor corrosion resistance, impurities, but cheap.

Now there are many kinds of PVC rods on the market. People will inevitably not know how to start when they choose. Here we will introduce a few methods to detect PVC rods:

1. If the surface of the pipe is matte, it means that it is a vacuum hot drawn product. Fold it to see if the toughness and strength are OK and whether it will be brittle.

2. If it is a solid bar, you can check whether there are nodes. If so, fold it to see if it will break, and you can also judge the product quality.

3. Whether the color is uniform or not and whether the surface has pimples can be used to judge whether it is new material or recycled material (generally, the black one is a little difficult to judge)

4. See if the product is easy to whiten.



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