3. Internal lubricantThe commonly used inner lubricants include stearic acid, 60, monoglyceride, 316, etc.Insufficient internal lubrication, poor dispersion of materials, uneven plasticization, difficult to control the thickness of products, foam board in the middle of the thick on both sides of the thin, may also appear white belt, and cavity adhesion and local overheating and other phenomena;Too...

1. StabilizerThe most commonly used stabilizers for PVC foamed products are lead salt stabilizer and calcium zinc stabilizer. With the increasingly stringent requirements for environmental protection and the increasingly high cost performance of calcium zinc stabilizer, the application of calcium zinc stabilizer has become more and more extensive.Lack of stabilizer, yellow, paste, brittle products...

PVC plate is a relatively common plastic plate, it has a good performance, the following we will understand its production molding process what:The first is free foaming, in which the melt expands unrestricted as soon as it leaves the die and, after a short period of time, enters a larger size setting device. The advantage of this method is simple process, suitable for the production of thickness ...

Rutile titanium dioxide can disperse the visible light more effectively, and has a stronger uv absorption capacity. As a result of its photochemical activity and uv absorbency, the layer failure of anatase titanium dioxide limited the service life of the coating. As pure titanium dioxide is a photocatalytic carrier, it can absorb ultraviolet rays, but it can cause photochemical catalysis. After su...

Because the CPE molecule does not contain double chains, it has good weather resistance, flame resistance and thermal stability, which are superior to PVC, low cost and excellent performance. Soluble in aromatic hydrocarbons and halogenated hydrocarbon, does not dissolve in fat hydrocarbon, above 170 ℃ decomposition, release hydrogen chloride gas, it has stable chemical structure, excellent aging ...

Main features of PE wax:Has low viscosity, high softening point, good properties such as hardness, non-toxic, good thermal stability, high temperature and low volatile, the pigment dispersion, both excellent external lubricity, and strong internal lubrication, can improve the production efficiency of plastic processing, moisture resistant performance is good at room temperature, chemical resistant...

1. The range of processing is narrow, and the processing technology requirements should be strictly implemented.Compared with the traditional composite lead thermal stabilizer, the long-term thermal stability of calcium and zinc thermal stabilizer is still relatively poor, and the processing time is long and easy to yellow, and the sensitivity to process temperature is also high.2. The volatile co...

1. The range of processing is narrow, and the processing technology requirements should be strictly implemented.Compared with the traditional composite lead thermal stabilizer, the long-term thermal stability of calcium and zinc thermal stabilizer is still relatively poor, and the processing time is long and easy to yellow, and the sensitivity to process temperature is also high.2. The volatile co...

1. The appearance quality of light calcium carbonate is different from that of heavy calcium carbonate(1) Different packing densityThe obvious difference between heavy calcium carbonate and light calcium carbonate lies in the different packing density of products. Generally, the packing density of heavy calcium carbonate products is larger, 0.8-1.3g /cm3. However, the packing density of light calc...

Several factors to pay attention to in choosing titanium dioxide:1. Relative densityAmong the commonly used white pigments, titanium dioxide has the smallest relative density. Among the white pigments of the same quality, titanium dioxide has the largest surface area and the highest pigment volume.2. Melting and boiling pointsThe melting and boiling points of the anatase titania are virtually non-...

Application of titanium dioxide:Pigment grade titanium white powder is mainly used in coating, paper making, plastic, rubber, printing ink, chemical fiber and other industries.Titanium sharp titanium powder is suitable for indoor coatings and products.Rutile titanium dioxide is suitable for outdoor coatings and products.Non-pigment grade titanium white powder is mainly used in enamel, capacitor, e...

The main equipment used is the conical twin screw extruder.1. The shape and size of the blanks formed by the cooling finalizing device (forming table) from the nozzle of the extruder are similar to the requirements of the products. The required shape and size can be obtained only through the cooling finalizing device, and the quality of the profiles is also affected. Finalize the mesa have a vacuu...

In the plastic industry, plastic auxiliaries are indispensable members, and they provide better performance for plastics, so that they can be better used in production. In addition to being a plastic assistant, titanium dioxide is also widely used in many industries.The main application fields of titanium white powder: coating, plastic, ink, paper making, among which coating accounts for 60%, plas...

Titanium white powder is an important fine chemical raw material, the chemical composition of titanium dioxide (TiO2), it is a kind of white inorganic pigment with many applications and great market demand. Titanium white powder commodity divides into two kinds: one kind is the gold red stone type titanium white powder, it bears the light, the weather resistance is strong, is used for the producti...

In recent years, with the development of the floor industry, the products on the floor market are also diverse. The floor serves as the indispensable decoration product in daily life of household, all sorts of numerous and complex type lets consumer dazzling. PVC floor serves as the product that receives favour extensively on current floor market, the gap of its price always lets a lot of consumer...

With the continuous development of plastic, it in all areas within the scope of application is expanding, the application of material of the blister is very broad, general blister material divided into thin slices of blister and thick slices blister, wafer blister materials we usually call it plate and film, thick slices blister material we call sheet. Next, we will introduce the common plastic sh...

Rubber is an organic polymer compound, which is divided into natural rubber and synthetic rubber according to different sources. In addition, it also has impervious to water, air, insulation and other good performance. Because rubber has these characteristics, it is widely used in industry, agriculture, transportation, national defense and People's Daily life.In the rubber industry, in order to im...

Water bleaching. Many types of transparent PVC products have a white, hazy appearance when exposed to water or water vapor for a long time. Soft goods are stronger than hard ones. Due to water penetration, plasticizer, stabilizer, precipitation from PVC, and the hydration, the surface forming hydrate deposition (affect transparency), even if it is not the saturated moisture, plasticizer, stabi...

1. What is plastic modification? The modification of plastics is to improve or increase the function of general resin through physical, chemical and mechanical methods, and to achieve the function under special environmental conditions in electric, magnetic, optical, thermal, aging resistance, flame retardant, mechanical properties and so on. In order to reduce the cost and improve the function...

1. The compatibility of plastics additives with polymers.If the compatibility is not good, the plastic additives are easy to precipitate out. The precipitation of solid plastic additives, commonly known as "spray frost"; Liquid plastic additives are precipitated out, known as "exudation" or "perspiration". Plasticizer loses the role of plastic additives after precipitation, and affects the appeara...

(1) PVC building materials.Construction industry is one of the important fields of PVC application. In foreign countries, PVC accounts for 65% of PVC consumption, and the penetration rate of PVC indoor plumbing is more than 90%. In China, with the development of the economy, the market share of PVC doors and Windows, PVC construction pipes and PVC waterproof materials has gradually increased. Espe...

After the concept and products of wood-plastic were brought into the domestic market, they were favored by some companies and consumers, and then the wood-plastic products appeared in the building materials market. The main materials of domestic wood plastic are PE wood plastic and PVC wood plastic.1. PE wood plasticAdvantages:PE wood plastic material has excellent waterproof and anticorrosive...

How to choose a good and suitable lubricant, first of all, the basic concept and theory of lubricant have a general and correct understanding and understanding. If you have a large understanding of basic concepts and theories, it may be difficult to choose a good or correct lubricant, or you may spend more time experimenting with validation and practice. Here, the basic concepts and theories of lu...

1. Selection of extruder.(1) the matching of extruder is reasonable.(2) high filling formula should be equipped with high shear performance screw.(3) use vacuum to improve vacuum degree and reduce volatile components of materials.(4) effective heating and cooling system to prevent the later period of boredom.2. Extrusion die matching.(1) the amount of extrusion matched with the extruder.(2) the pr...

1. Selection of extruder.(1) the matching of extruder is reasonable.(2) high filling formula should be equipped with high shear performance screw.(3) use vacuum to improve vacuum degree and reduce volatile components of materials.(4) effective heating and cooling system to prevent the later period of boredom.2. Extrusion die matching.(1) the amount of extrusion matched with the extruder.(2) the pr...

The problems and cause analysis of calcium and zinc stabilizer in replacement of lead salt:1. The product color is unstable;2. It is easy to precipitate in the process of mouth mold production;3. Yellow line and black line are easy to appear;4. Poor color and aging resistance of the product;Cause analysis of calcium and zinc deficiency:(1) the processing scope is narrow, and the processing technol...

Common quality problems and reasons:(1) Stability problems: lacking of stability will cause the board yellow&brittle.(2) Melt strength problems: Insufficient melt strength can cause large cell foam,long longitudinal hole.For products that require rapid plasticization and high melt strength, choose TG-920.(3) lubrication problem: external lubricant is conducive to mold the outer slip on the smooth ...

First Titanium Dioxide as a white pigment used in coatings, such as masterbatch color formula, endowed with bright color, luster and strong hiding power, in addition, it also as ultraviolet screening agent is used to protect paint film and improve the weatherability. Titanium Dioxide can cover the base of color is the main purpose of also can merge with the new color is very good, the hidin...

1. Different appearance: the appearance of bamboo fiber board has the effect of wood, while stone plastic is the appearance of plastic sheet.2. The density is different: the bamboo fiber board is less dense because of the micro-foaming, and the plate is relatively light, while the stone plastic sheet is the solid extrusion, so the density is larger and the plate is heavier.3. Different physical pr...

1. The surface of the plate is yellowing. The extrusion temperature is too high or the stability is insufficient. The solution is to reduce the processing temperature. If the formula is not improved and the stabilizer and lubricant are added appropriately, the problem can be changed one by one, so that the problem can be quickly identified. Solve problems as quickly as you can.2. The main reason i...

Polyvinyl chloride (PVC) due to their excellent chemical and physical properties as the lowest cost, one of the most common resin. PVC can be used main processing all kinds of processing, for example, mixing, extrusion, injection molding and blow molding. The thermal decomposition temperature of PVC is close to its processing temperature. Therefore, it is necessary to add thermal stabilizer...

1, yellow board(1) lack of stable dose Increase the number of stabilizer(2) lack of external sliding, friction, causing material decomposition Increase the number of external lubricant(3) temperature setting is too high Reduce the temperature2, yellow plate surface of the middle(1) mold temperature is set locally Reduce the corresponding temperature(2) lack of external sliding Increase the nu...

Many initial contact with integrated wall or integrated wall products do not understand people, have mistakenly think that a normal PVC board is a layer of wallpaper is the integration of the wall. And integrated wall prices are still higher than wallpaper, PVC board much higher, so many people for the integration of the price of the wall is very unacceptable. Obviously, this view is wrong...

(1) It can have good phase solubility with PVC at the processing temperature, and promote uniform and synchronous plasticization. (2) Improve the rheological behavior of PVC thermoplastic, improve the melt strength, avoid melt rupture, improve the internal quality and surface gloss of the products. (3)The stability of a long time forming process. (4) Prevent in extrusion and injection by extrus...

Calcium zinc stabilizer by calcium salt, zinc salt, lubricants, antioxidants, etc. as the main component of a special composite technology and synthesis. It can not only replace lead and cadmium salts and organotins and other toxic stabilizers, but also has very good thermal stability, light stability and transparency and tinting strength. Practice has proved that PVC resin products, processing pe...

PVC Flooring Categories include: PVC sports flooringPVC anti-static flooringPVC quartz flooringPVC plastic flooringPVC plastic flooringPVC assembled flooringwear-resistant PVC flooringPVC floor rollsPVC sheet flooringPVC flooring and other large categories of stone

In the industrial production of vinyl chloride homopolymer, according to the field of resin application, five kinds of production methods are generally adopted, namely bulk polymerization, suspension polymerization, emulsion polymerization, microsuspension polymerization and solution polymerization.Although the polymerization process is different, several methods have the same polymerization mecha...

PVC floor is divided into two types: one is homogeneous (semi hard floor), the other is a multi-layer composite floor (rigid and semi-rigid).PVC multi-layer composite flooring is divided into coiled flooring and laminated flooring. LVTN WPC flooring belongs to semi-rigid sheet plastic flooring SPCRVP) flooring. According to the assembly method can be divided into: ordinary Dry Back. installation n...

1.Identification of combustion method, softening or melting temperature range: 75~90 degree C; combustion situation: hard to soften; combustion flame state: up yellow and green smoke; after fire: fire away; smell: pungent sour taste.2.Solvent treatment identification, solvent: tetrahydrofuran, cyclohexanone, methyl ketone, two methyl formamide; non solvent: methanol, acetone, heptane.

PVC resin to adding various additives to improve the performance of PVC in the processing, in order to meet the needs of processing and properties of the products. The production of plastic profile in general to join: heat stabilizer, processing modifier, impact modifier, lubricant, light stabilizer, filler and pigment. Although the additives amount is 0.1% PVC resin to 10%, but their role is very...