High-flame-retardant PVC product containing hyperbranched polymer

A hyperbranched polymer, high flame-retardant technology, applied in the field of PVC products, can solve the problems of affecting the stability of PVC, not obvious effect, and reducing the fluidity of PVC.

Inactive Publication Date: 2020-10-20
HUIZHOU AIMSEA NEWWAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, adding aluminum hydroxide or magnesium hydroxide to PVC products can effectively improve the flame retardant performance of the product, but because aluminum hydroxide / magnesium hydroxide is an inorganic substance, the compatibility with PVC is poor, which will make PVC Reduced fluidity, resulting in slower plasticization
[0005] In addition to adding aluminum hydroxide / magnesium as a flame retardant, some manufacturers will use antimony trioxide as a flame retardant, but compared with aluminum / magnesium hydroxide, the cost of antimony trioxide is higher, and it will also affect Stability of PVC
[0006] At present, for the problems of poor fluidity and low plasticizing efficiency caused by magnesium hydroxide / aluminum, a common solution is to add acrylate copolymers to the PVC formula. The mechanism of action of this type of processing aid is mainly acrylate When the copolymer is processed, some components first melt and adhere to the surface of the PVC resin, and the external heat and shear force are transferred to the PVC resin powder faster, thereby breaking the winding structure of the PVC resin and promoting its further development. Melt plasticization, improve the melt strength, and improve the appearance quality of the product
However, the effect of acrylate copolymer is relatively single, and its effect in soft PVC is not obvious, and it cannot cooperate with inorganic fillers. In addition, the price of acrylate copolymer is also high

Method used

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  • High-flame-retardant PVC product containing hyperbranched polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The purpose of the present invention is to provide a high flame-retardant PVC product containing a hyperbranched polymer. Vinyl resin, the dioctyl terephthalate of 30 parts by weight, the light calcium carbonate of 40 parts by weight, the hydroxide of 25 parts by weight, the calcium zinc stabilizer of 4 parts by weight, the polyethylene wax of 0.5 parts by weight and 2 The hyperbranched polymer composition of weight part.

[0024] Among them, the density of hyperbranched polymer is 1.3g / cm 2 , the melting range is 140-160°C.

[0025] Among them, the median diameter of the polyvinyl chloride resin is 250 μm.

[0026] Among them, the molecular weight of dioctyl terephthalate is 375, and the viscosity at 25°C is 55×10 -3 Pa·s.

[0027] Wherein, the moisture content of the light calcium carbonate is 0.5wt%, and the median particle size is 5 μm.

[0028] Wherein, the hydroxide is aluminum hydroxide.

[0029] Among them, the median particle size of aluminum hydroxide is...

Embodiment 2

[0037] The purpose of the present invention is to provide a high flame-retardant PVC product containing a hyperbranched polymer. Vinyl resin, the dioctyl terephthalate of 20 parts by weight, the light calcium carbonate of 30 parts by weight, the hydroxide of 20 parts by weight, the calcium zinc stabilizer of 3 parts by weight, the polyethylene wax of 0.3 parts by weight and 1 The hyperbranched polymer composition of weight part.

[0038] Among them, the density of hyperbranched polymer is 1g / cm 2 , the melting range is 160-180°C.

[0039] Among them, the median diameter of the polyvinyl chloride resin is 30 μm.

[0040] Among them, the molecular weight of dioctyl terephthalate is 350, and the viscosity at 25°C is 50×10 -3 Pa·s.

[0041] Wherein, the moisture content of the light calcium carbonate is 0.1wt%, and the median particle size is 0.5μm.

[0042] Wherein, the hydroxide is aluminum hydroxide.

[0043] Wherein, the chlorine impurity content of magnesium hydroxide i...

Embodiment 3

[0051] The object of the present invention is to provide a high flame-retardant PVC product containing a hyperbranched polymer. Vinyl resin, the dioctyl terephthalate of 40 parts by weight, the light calcium carbonate of 50 parts by weight, the hydroxide of 30 parts by weight, the calcium zinc stabilizer of 5 parts by weight, the polyethylene wax of 0.7 parts by weight and 3 The hyperbranched polymer composition of weight part.

[0052] Among them, the density of hyperbranched polymer is 1.6g / cm 2 , the melting range is 140-160°C.

[0053] Among them, the median diameter of the polyvinyl chloride resin is 500 μm.

[0054] Among them, the molecular weight of dioctyl terephthalate is 400, and the viscosity at 25°C is 60×10 -3 Pa·s.

[0055] Among them, the moisture content of the light calcium carbonate is 1.0wt%, and the median particle size is 10 μm.

[0056] Wherein, the hydroxide is aluminum hydroxide.

[0057] Among them, the median particle size of aluminum hydroxide...

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Abstract

The invention belongs to the field of PVC products, and particularly discloses a high-flame-retardant PVC product containing a hyperbranched polymer. The high-flame-retardant PVC product containing the hyperbranched polymer, disclosed by the invention, contains 90 to 110 parts by weight of a polyvinyl chloride resin, 20 to 40 parts of dioctyl terephthalate, 30 to 50 parts of light calcium carbonate, 20 to 30 parts of hydroxide, 3 to 5 parts of a calcium-zinc stabilizer, 0.3 to 0.7 part of polyethylene wax and 1 to 3 parts of a hyperbranched polymer. According to the invention, the hyperbranched polymer is used as an additive and is added into the PVC product containing a large amount of magnesium hydroxide / aluminum hydroxide, so that the plasticizing speed of the PVC product is effectivelyincreased, the flowability of the PVC product melt is obviously improved, and the physical properties of the PVC product are not influenced.

Description

technical field [0001] The invention belongs to the field of PVC products, in particular to a highly flame-resistant PVC product containing a hyperbranched polymer. Background technique [0002] PVC is one of the most widely used general-purpose materials in the world. etc. are widely used. [0003] Fire is a very common and very harmful disaster. Fire accidents often occur in daily life. Since most household materials are made of wood or textiles, fire hazards are very high, and PVC Although it has a certain flame retardant function, it can still burn, and it is accompanied by a lot of smoke, so now household PVC products need good flame retardant performance. [0004] At present, there are many flame-retardant PVC products on the market. The most common method is to add a large amount of aluminum hydroxide or magnesium hydroxide to the PVC formula, and compound it with PVC to improve its flame-retardant performance. However, adding aluminum hydroxide or magnesium hydrox...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L23/06C08L87/00C08K5/12C08K3/26C08K3/22C08K5/098C08K7/26C08K13/04
CPCC08K2003/2227C08K2003/265C08L27/06C08L2201/02C08L2205/035C08L23/06C08L87/00C08K5/12C08K3/26C08K3/22C08K5/098C08K7/26C08K13/04
Inventor 周志鑫严晴严一丰周国庆
Owner HUIZHOU AIMSEA NEWWAY TECH CO LTD
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