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Halogen-free flame retardant PVC elastic material and preparation method thereof

A production method and elastic material technology, applied in the field of polymer composite material preparation, can solve the problems of easy generation of toxic and harmful gases, poor flame retardancy, etc., and achieve good environmental protection flame retardancy, good thermal stability, and good flame retardancy effect Effect

Active Publication Date: 2012-05-09
JIANGSU XINGHUA RUBBER BELT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor flame retardancy of commonly produced PVC thermoplastic elastomers, toxic and harmful gases are easily produced during combustion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The special halogen-free flame-retardant PVC elastomer material for the sheath of the elevator balance compensation chain in this embodiment is a blending system composed of PVC resin and additives blended in the PVC resin. Additives include tougheners, plasticizers, stabilizers, lubricants, flame retardants and pigments. There are two kinds of plasticizers, the first is dioctyl phthalate, the second is diphenyl octyl phosphate, and the ratio of dioctyl phthalate and diphenyl octyl phosphate is 4-10:1. The weight ratio of the blended plasticizer to make up the blend. In the 232.8kg special halogen-free flame-retardant PVC elastomer material for the elevator balance compensation chain sheath, the components and contents are as follows:

[0031] PVC resin 100kg, toughening agent chlorinated polyethylene 12kg, heat stabilizer non-toxic liquid calcium-zinc stabilizer 7kg, plasticizer dioctyl phthalate 50kg, diphenylisooctyl phosphate 10kg, lubricant hard Zinc fatty acid 3...

Embodiment 2

[0044] The rest of this embodiment is the same as that of Embodiment 1, except that: in the 232.8 kg special material for halogen-free flame-retardant PVC elastomer for the elevator balance compensation chain sheath, each component and corresponding content are as follows:

[0045] PVC resin 100kg, toughening agent chlorinated polyethylene 17kg, heat stabilizer non-toxic liquid calcium-zinc stabilizer 7kg, plasticizer dioctyl phthalate 45kg, diphenyliso-octyl phosphate 10kg, lubricant hard Zinc fatty acid 3.5kg, pigment carbon black 0.3kg, flame retardant modified micron aluminum hydroxide 50kg.

[0046] In step ②, the weight of the various raw materials weighed corresponds to the content of the above-mentioned components, that is, 100kg of S-1300 PVC resin, 17kg of toughening agent chlorinated polyethylene, 7kg of liquid calcium-zinc Stabilizer, 45kg of dioctyl phthalate, 10kg of diphenyl octyl phosphate, 50kg of modified micron-grade aluminum hydroxide, 3.5kg of zinc stearat...

Embodiment 3

[0049] The rest of this embodiment is the same as that of Embodiment 1, except that: in the 246.3 kg special material for halogen-free flame-retardant PVC elastomer for the elevator balance compensation chain sheath, each component and corresponding content are as follows:

[0050] PVC resin 100kg, toughening agent chlorinated polyethylene 15kg, heat stabilizer non-toxic liquid calcium-zinc stabilizer 7kg, plasticizer dioctyl phthalate 50kg, diphenylisooctyl phosphate 10kg, lubricant hard Zinc fatty acid 4kg, pigment carbon black 0.3kg, flame retardant modified micron aluminum hydroxide 60kg.

[0051] Correspondingly, when preparing the above-mentioned halogen-free flame-retardant PVC elastomer special material for the elevator balance compensation chain sheath, in step ②, the weight of the various raw materials weighed corresponds to the content of the above-mentioned components, that is, Weigh 100kg of S-1300 type PVC resin, 15kg of toughening agent chlorinated polyethylene,...

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Abstract

The invention provides a halogen-free flame retardant PVC elastic material and a preparation method thereof, relating to a preparation method of a polymer composite material. The preparation method comprises the following steps of: mixing PVC resin in a kneader till the temperature is 70-80 DEG C; then adding a stabilizing agent, a plasticizer, a lubricant, pigments and a halogen-free flame retardant and continuing mixing till the temperature of the mixture is 85-95 DEG C and discharging the mixed material; cooling the mixed material in a cooling stirrer to 40-50 DEG C; and adding the cooled mixed material in a twin-screw extruder, and extruding strip-shaped halogen-free flame retardant PVC elastic material under the condition that the temperature of an extrusion die head is 130-150 DEG C. An elevator balance compensation chain sheath prepared from the special material provided by the invention has beautiful appearance, good toughness, good aging resistance, high thermal stability andgood fire retardant effect.

Description

technical field [0001] The invention relates to a preparation technology of a polymer composite material, in particular to a preparation method of a halogen-free flame-retardant PVC elastomer special material for an elevator balance compensation chain sheath. Background technique [0002] The elevator balance compensation chain is an important safety component to keep the elevator running smoothly during the lifting process. The elevator balance compensation chain is composed of special electric welding anchor chain and outer cladding composite material. In order to ensure that the elevator balance compensation chain reduces friction noise and is stable during operation, the elevator balance compensation chain must use elastic polymer materials as the outer sheathing. set. There are many types of elastic polymers, including various thermoplastic elastomers and rubbers. [0003] Due to the wide source of PVC, low price, superior mechanical properties, and convenient molding...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L23/28C08K13/06C08K9/06C08K5/12C08K5/523C08K3/22C08K3/04B29C47/92B29C48/92
CPCB29C48/40B29C48/92B29C2948/92704B29C2948/92904
Inventor 魏昌林周健
Owner JIANGSU XINGHUA RUBBER BELT
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