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- Time of issue:2021-11-24 11:43
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(Summary description)As a rubber processing aid, it can enhance the diffusion of the filler, increase the extrusion molding rate, increase the mold flow rate, facilitate demolding, and improve the surface brightness and smoothness of the product after the film is released.
Rubber: protect the rubber from the erosion of electrostatic ozone, improve the dispersibility of carbon black in the rubber, the recommended amount of 2-5phr;
The use of PE wax in rubber is a kind of chemical material. Among them, the color of polywax is small white beads/flakes. It is formed by polymerized rubber processing agent. It has high melting point, high hardness, high gloss, The color is white and other characteristics.
The use of PE wax in rubber is a low molecular weight homopolymer or copolymer widely used in coatings. The so-called wax means that the polymer finally floats in the form of microcrystals on the surface of the paint to act as a waxy substance that looks like paraffin wax but has more different properties than paraffin wax.
The main functions of PE wax in rubber in solvent-based coatings are: matting, scratch resistance, abrasion resistance, polishing resistance, imprint resistance, anti-blocking, anti-precipitation, and thixotropy. Good lubricity and processability. Metallic pigment properties.
1. Lubrication and dispersion
Generally, rubber or silica gel will be mixed with some filling, some with carbon black, calcium carbonate, talc, etc., and some white carbon black will be added for those with high transparency requirements. Adding polyethylene wax can play a role in lubricating and dispersing.
2. Anti-sticking and demoulding
Normal rubbers are relatively sticky and easy to stick to molds! Polyethylene wax can play a certain role in external lubrication.
3. Anti-ozone, a physical anti-aging agent for rubber products, which migrates to rubber products to form a protective film to play the role of anti-ozone.
4. Appropriate addition can reduce the Mooney viscosity of the rubber compound and play a plasticizing effect, but it should be noted that the excessive amount will affect the mechanical properties of the rubber compound.
5. Certain product extrusion, calendering, vulcanization molding fluidity.
6. Improve the uniformity of the rubber compound: the internal and external rubber materials are self-lubricating and have a certain degree of dispersibility for inorganic additions, which improves the uniformity of the rubber compound.
However, general manufacturers will not choose polyethylene wax for the following reasons:
1. The melting point is relatively high
The mixing temperature of some rubbers is 70-120℃, and the polyethylene wax has a high melting point, which is not easy to melt and does not play a role. (Generally, the softening point of polyethylene wax is about 70-100℃)
2. Easy to separate out
Rubber is a high-molecular material, while polyethylene wax has a smaller molecule, and it is easy to precipitate if it is added, but generally it cannot achieve the effect if it is added. (2-4phr is appropriate)
3. Narrow range of use
It is mainly limited by the melting point.
4. Affect product transparency
1. Anti-ozone aging: Polyethylene wax will precipitate out of the rubber surface to form a protective film;
2. Plasticizing and improving processing performance: The molecular weight of polyethylene wax is much lower than that of rubber, and its molecular chain is easy to enter the rubber molecular chain after being added, making the rubber molecular chain easier to slide;
3. Lubrication (internal lubrication + external lubrication) to improve extrusion performance and reduce shrinkage: the same as 2;
4. Make the rubber compound easier to mix evenly: the polyethylene wax enters between the rubber molecular chains to expand the distance between the rubber molecular chains, and at the same time, the low-molecular compounding agent is carried in the rubber molecular chain, so that other compounding agents are easier to disperse .
Protective waxes are classified by purpose. PE wax, paraffin wax and microcrystalline wax can all be used as protective waxes.
PE wax is polyethylene wax (PE-WAX), a kind of ultra-low molecular weight polyethylene. Polyethylene waxes are generally divided into oligomer waxes, cracked waxes, polymerized waxes and blended waxes. The domestically produced oligomer waxes are generally oligomer waxes. Other cracked waxes, polymerized waxes and blended waxes are mainly produced abroad. Polymerized waxes The theoretical analysis of the performance of the pyrolysis wax is better than that of the pyrolysis wax, and the specific use depends on the compatibility of the product. Generally, it is mainly used to improve the fluidity of polyolefin plastics, improve the dispersibility of fillers, additives, etc. It is also used as an internal lubricant for rubber and plastic materials.
(Summary description)As a rubber processing aid, it can enhance the diffusion of the filler, increase the extrusion molding rate, increase the mold flow rate, facilitate demolding, and improve the surface brightness and smoothness of the product after the film is released.
Rubber: protect the rubber from the erosion of electrostatic ozone, improve the dispersibility of carbon black in the rubber, the recommended amount of 2-5phr;
The use of PE wax in rubber is a kind of chemical material. Among them, the color of polywax is small white beads/flakes. It is formed by polymerized rubber processing agent. It has high melting point, high hardness, high gloss, The color is white and other characteristics.
The use of PE wax in rubber is a low molecular weight homopolymer or copolymer widely used in coatings. The so-called wax means that the polymer finally floats in the form of microcrystals on the surface of the paint to act as a waxy substance that looks like paraffin wax but has more different properties than paraffin wax.
The main functions of PE wax in rubber in solvent-based coatings are: matting, scratch resistance, abrasion resistance, polishing resistance, imprint resistance, anti-blocking, anti-precipitation, and thixotropy. Good lubricity and processability. Metallic pigment properties.
1. Lubrication and dispersion
Generally, rubber or silica gel will be mixed with some filling, some with carbon black, calcium carbonate, talc, etc., and some white carbon black will be added for those with high transparency requirements. Adding polyethylene wax can play a role in lubricating and dispersing.
2. Anti-sticking and demoulding
Normal rubbers are relatively sticky and easy to stick to molds! Polyethylene wax can play a certain role in external lubrication.
3. Anti-ozone, a physical anti-aging agent for rubber products, which migrates to rubber products to form a protective film to play the role of anti-ozone.
4. Appropriate addition can reduce the Mooney viscosity of the rubber compound and play a plasticizing effect, but it should be noted that the excessive amount will affect the mechanical properties of the rubber compound.
5. Certain product extrusion, calendering, vulcanization molding fluidity.
6. Improve the uniformity of the rubber compound: the internal and external rubber materials are self-lubricating and have a certain degree of dispersibility for inorganic additions, which improves the uniformity of the rubber compound.
However, general manufacturers will not choose polyethylene wax for the following reasons:
1. The melting point is relatively high
The mixing temperature of some rubbers is 70-120℃, and the polyethylene wax has a high melting point, which is not easy to melt and does not play a role. (Generally, the softening point of polyethylene wax is about 70-100℃)
2. Easy to separate out
Rubber is a high-molecular material, while polyethylene wax has a smaller molecule, and it is easy to precipitate if it is added, but generally it cannot achieve the effect if it is added. (2-4phr is appropriate)
3. Narrow range of use
It is mainly limited by the melting point.
4. Affect product transparency
1. Anti-ozone aging: Polyethylene wax will precipitate out of the rubber surface to form a protective film;
2. Plasticizing and improving processing performance: The molecular weight of polyethylene wax is much lower than that of rubber, and its molecular chain is easy to enter the rubber molecular chain after being added, making the rubber molecular chain easier to slide;
3. Lubrication (internal lubrication + external lubrication) to improve extrusion performance and reduce shrinkage: the same as 2;
4. Make the rubber compound easier to mix evenly: the polyethylene wax enters between the rubber molecular chains to expand the distance between the rubber molecular chains, and at the same time, the low-molecular compounding agent is carried in the rubber molecular chain, so that other compounding agents are easier to disperse .
Protective waxes are classified by purpose. PE wax, paraffin wax and microcrystalline wax can all be used as protective waxes.
PE wax is polyethylene wax (PE-WAX), a kind of ultra-low molecular weight polyethylene. Polyethylene waxes are generally divided into oligomer waxes, cracked waxes, polymerized waxes and blended waxes. The domestically produced oligomer waxes are generally oligomer waxes. Other cracked waxes, polymerized waxes and blended waxes are mainly produced abroad. Polymerized waxes The theoretical analysis of the performance of the pyrolysis wax is better than that of the pyrolysis wax, and the specific use depends on the compatibility of the product. Generally, it is mainly used to improve the fluidity of polyolefin plastics, improve the dispersibility of fillers, additives, etc. It is also used as an internal lubricant for rubber and plastic materials.
- Categories:news
- Author:
- Origin:
- Time of issue:2021-11-24 11:43
- Views:
As a rubber processing aid, it can enhance the diffusion of the filler, increase the extrusion molding rate, increase the mold flow rate, facilitate demolding, and improve the surface brightness and smoothness of the product after the film is released.
Rubber: protect the rubber from the erosion of electrostatic ozone, improve the dispersibility of carbon black in the rubber, the recommended amount of 2-5phr;
The use of PE wax in rubber is a kind of chemical material. Among them, the color of polywax is small white beads/flakes. It is formed by polymerized rubber processing agent. It has high melting point, high hardness, high gloss, The color is white and other characteristics.
The use of PE wax in rubber is a low molecular weight homopolymer or copolymer widely used in coatings. The so-called wax means that the polymer finally floats in the form of microcrystals on the surface of the paint to act as a waxy substance that looks like paraffin wax but has more different properties than paraffin wax.
The main functions of PE wax in rubber in solvent-based coatings are: matting, scratch resistance, abrasion resistance, polishing resistance, imprint resistance, anti-blocking, anti-precipitation, and thixotropy. Good lubricity and processability. Metallic pigment properties.
1. Lubrication and dispersion
Generally, rubber or silica gel will be mixed with some filling, some with carbon black, calcium carbonate, talc, etc., and some white carbon black will be added for those with high transparency requirements. Adding polyethylene wax can play a role in lubricating and dispersing.
2. Anti-sticking and demoulding
Normal rubbers are relatively sticky and easy to stick to molds! Polyethylene wax can play a certain role in external lubrication.
3. Anti-ozone, a physical anti-aging agent for rubber products, which migrates to rubber products to form a protective film to play the role of anti-ozone.
4. Appropriate addition can reduce the Mooney viscosity of the rubber compound and play a plasticizing effect, but it should be noted that the excessive amount will affect the mechanical properties of the rubber compound.
5. Certain product extrusion, calendering, vulcanization molding fluidity.
6. Improve the uniformity of the rubber compound: the internal and external rubber materials are self-lubricating and have a certain degree of dispersibility for inorganic additions, which improves the uniformity of the rubber compound.
However, general manufacturers will not choose polyethylene wax for the following reasons:
1. The melting point is relatively high
The mixing temperature of some rubbers is 70-120℃, and the polyethylene wax has a high melting point, which is not easy to melt and does not play a role. (Generally, the softening point of polyethylene wax is about 70-100℃)
2. Easy to separate out
Rubber is a high-molecular material, while polyethylene wax has a smaller molecule, and it is easy to precipitate if it is added, but generally it cannot achieve the effect if it is added. (2-4phr is appropriate)
3. Narrow range of use
It is mainly limited by the melting point.
4. Affect product transparency
1. Anti-ozone aging: Polyethylene wax will precipitate out of the rubber surface to form a protective film;
2. Plasticizing and improving processing performance: The molecular weight of polyethylene wax is much lower than that of rubber, and its molecular chain is easy to enter the rubber molecular chain after being added, making the rubber molecular chain easier to slide;
3. Lubrication (internal lubrication + external lubrication) to improve extrusion performance and reduce shrinkage: the same as 2;
4. Make the rubber compound easier to mix evenly: the polyethylene wax enters between the rubber molecular chains to expand the distance between the rubber molecular chains, and at the same time, the low-molecular compounding agent is carried in the rubber molecular chain, so that other compounding agents are easier to disperse .
Protective waxes are classified by purpose. PE wax, paraffin wax and microcrystalline wax can all be used as protective waxes.
PE wax is polyethylene wax (PE-WAX), a kind of ultra-low molecular weight polyethylene. Polyethylene waxes are generally divided into oligomer waxes, cracked waxes, polymerized waxes and blended waxes. The domestically produced oligomer waxes are generally oligomer waxes. Other cracked waxes, polymerized waxes and blended waxes are mainly produced abroad. Polymerized waxes The theoretical analysis of the performance of the pyrolysis wax is better than that of the pyrolysis wax, and the specific use depends on the compatibility of the product. Generally, it is mainly used to improve the fluidity of polyolefin plastics, improve the dispersibility of fillers, additives, etc. It is also used as an internal lubricant for rubber and plastic materials.