CMR-grade high-flame-retardation polyvinyl chloride cable jacket material and preparation method of same

A technology of polyvinyl chloride and sheathing material, which is applied in the direction of cables, insulated cables, conductors, etc., can solve the problem of low oxygen index of cable sheathing material, achieve the effect of reducing dosage and increasing flame retardant performance

Active Publication Date: 2012-03-21
江西一舟数据技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem of low oxygen index of existing cable sheathing materials, the present invention provides a cable sheathing material with high oxygen index and a preparation method thereof

Method used

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  • CMR-grade high-flame-retardation polyvinyl chloride cable jacket material and preparation method of same
  • CMR-grade high-flame-retardation polyvinyl chloride cable jacket material and preparation method of same
  • CMR-grade high-flame-retardation polyvinyl chloride cable jacket material and preparation method of same

Examples

Experimental program
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preparation example Construction

[0024] The present invention also provides a preparation method of the cable sheathing material, comprising the following steps:

[0025] S1. Preparation of flame retardant plasticizer mixture: mix resorcinol bis(diphenyl phosphate), dioctyl tetrabrominated phthalate and tris(2,3-dichloropropyl)phosphate evenly ;

[0026] S2. Ingredients: Pour polyvinyl chloride into the high mixer, heat to 90-100°C while stirring, add the flame retardant plasticizer mixture prepared in step S1 and stir evenly, then add the plasticizer and stir evenly, Finally, add flame retardant, stabilizer and additives and stir evenly;

[0027] S3. Extrusion granulation: adding the mixture obtained in step S2 to a twin-screw extruder for granulation to obtain a cable sheath material.

[0028] Preferably, the operating temperature of the twin-screw extruder is 140°C-160°C, the feeding frequency is 20 Hz, and the rotational speed of the main engine is 300 rpm.

Embodiment 1

[0031] 1. Weighing: according to the formula described in the following Table 1, Example 1, weigh the corresponding substances for subsequent use;

[0032] 2. Preparation of flame retardant plasticizer mixture: weighed resorcinol bis(diphenyl phosphate), dioctyl tetrabrominated phthalate, tris(2,3-dichloropropyl phosphate) ) ester into the stirring tank, fully stirred until uniformly miscible for subsequent use;

[0033] 3. Ingredients: Pour polyvinyl chloride into the high-mixer, heat to 100°C while stirring, add the mixed liquid prepared in step 2, stir for 5 minutes, add the weighed plasticizer, and stir for 5 minutes; then Add the remaining flame retardants, stabilizers and additives in sequence, and stir evenly at high speed.

[0034] 4. Extrusion granulation: Discharge the prepared and mixed materials from the mixer, put them into the feeding hopper of the twin-screw extruder, and evenly add them into the twin-screw extruder from the feeder. The temperature of the extr...

Embodiment 2-7

[0039] Samples A2-A6 were prepared according to the method of Example 1 and the content of each formulation of Examples 2-6 in Table 1.

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Abstract

The invention provides a CMR-grade high-flame-retardation polyvinyl chloride cable jacket material including the materials in parts by weight as follows: 100 parts of polyvinyl chloride, 20-40 parts of plasticizer, 15-40 parts of flame retardant plasticizer, 40-80 parts of flame retardant, 6-10 parts of stabilizer and 1-5 of additives, wherein the flame retardant plasticizer is a mixture of resorcinol bis(diphenyl phosphate), tetrabromide phthalate dioctyl and phosphate tris(2,3-dichloropropyl) in weight ratio of 3-6:3-6:1. The invention also provides a preparation method of the jacket material. In the cable jacket material, the usage of common plasticizer can be reduced greatly and simultaneously the flame retardation property of the product is improved effectively, therefore the optimalcombination of processability and flame retardation is achieved.

Description

technical field [0001] The invention relates to a cable sheath material, in particular to a CMR grade high flame-retardant polyvinyl chloride cable sheath material and a preparation method thereof. Background technique [0002] At present, with the continuous development of communication networks, more and more integrated wiring methods are used in commercial office buildings, which leads to more and more communication cables in the space under the ceiling or under the floor. In North America and Mexico, all communication cables must comply with one of the four fire levels of CMP, CMR, CM, and CMX, and must have signs. [0003] Among them, the CMR grade communication cable is the second-ranked cable, and the applicable safety standard is UL1666. The experiment stipulates that multiple samples are laid on the simulated vertical shaft, and the specified 154.5KW gas Bunsen burner is used for 30 minutes. The passing criterion is that the flame cannot spread to the upper part o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K13/02C08K5/523C08K5/12C08K5/521C08K3/22C08K3/38H01B7/295
Inventor 胡建友刘华张煜杰余玲张文阳
Owner 江西一舟数据技术有限公司
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