High-strength PP-RCT inflaming retarding pipe and preparation method thereof

A PP-RCT, high-strength technology, applied in the direction of pipes, rigid pipes, pipeline protection, etc., can solve the problems that the flame retardant effect cannot meet the requirements, reduce the mechanical properties and processing performance, and achieve excellent mechanical properties and flame retardant effects Good, the effect of adding a small amount

Active Publication Date: 2016-12-14
SHANGHAI ZHONGSU PIPE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the amount of flame retardant added to polypropylene pipes is small, the flame retardant effect cannot meet the requirem

Method used

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Examples

Experimental program
Comparison scheme
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Example Embodiment

[0039] As the preparation method of the phosphorus-containing organosilicon compound of the present invention, the steps are as follows: under the protection of nitrogen, the phosphorus oxychloride compound and the amino organosilicon compound are mixed in acetonitrile, and then triethylamine is added as a catalyst, and heated to Continue stirring at 110°C for 24h, then add water and hexamethyldisiloxane, reduce the reaction temperature to 70°C, continue stirring for 24h, after stopping the reaction, remove the solvent by distillation under reduced pressure, wash with water and ether, and dry in vacuum After that, get it.

[0040] In some embodiments, the phosphoryl dichloride compound contains an aromatic ring.

[0041] In some embodiments, the phosphoryl dichloride compound is selected from 2-phthalimidoethyl dichlorophosphate, phenoxy phosphoryl dichloride, 3,5-dimethylphenylphosphonium One of the acid dichlorides.

[0042] In some embodiments, the amino organosilicon compound c...

Example Embodiment

[0121] Example 1

[0122] The inner hoppers of Examples 1-9 and Comparative Examples 1-6 are PP-RCT particles containing antibacterial agents and composite flame retardants. The raw material ratios are all the same. In parts by weight, the specific raw material ratios are shown in Table 1. .

[0123] Table 1

[0124]

[0125] The middle layer hoppers of Examples 1-9 and Comparative Examples 1-6 are PP-RCT particles containing glass fiber and composite flame retardant. The specific raw material ratio is shown in Table 2 in parts by weight.

[0126] Table 2

[0127]

[0128] The outer hoppers of Examples 1-9 and Comparative Examples 1-6 are PP-RCT particles containing composite flame retardants. The specific raw material ratios are shown in Table 3 in parts by weight.

[0129] table 3

[0130]

[0131] The preparation methods of Examples 1-9 and Comparative Examples 1-6 are:

[0132] The materials in the inner, middle, and outer hoppers are added according to the raw materials in T...

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PUM

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Abstract

A high-strength PP-RCT inflaming retarding pipe comprises at least three layers, namely, the inner layer, the middle layer and the outer layer from inside to outside. The inner layer comprises an antibacterial agent and composite flame retardant, the middle layer comprises glass fibers and composite flame retardant, the outer layer comprises composite flame retardant, and the composite flame retardant comprises morpholinyl thiourea and a phosphorus containing organosilicon compound.

Description

technical field [0001] The invention relates to PP composite materials, in particular to a high-strength PP-RCT flame-retardant pipe material. Background technique [0002] Polypropylene (PP), as one of the general-purpose plastics, is a thermoplastic. Its raw materials are rich in sources, low in price, and have good comprehensive properties, such as excellent mechanical properties, good heat resistance, good electrical insulation, bending fatigue resistance, chemical resistance, light weight and low density. And other characteristics, so it is widely used in household appliances, automobiles, construction, textiles and other industries. However, the limiting oxygen index of polypropylene is only 17.4-18.5, and its flame retardancy is poor. When it burns in a fire, it generates a large amount of heat, burns quickly, produces a large number of molten droplets, and is accompanied by smoke. It is very easy to spread flames and cause fires. It brings people's lives and proper...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L53/00C08L23/14C08L23/06C08K5/405C08K5/544C08K7/14F16L9/12F16L57/04
CPCC08K5/405C08K5/544C08K7/14C08L23/12C08L23/14C08L53/00C08L2201/02C08L2203/18C08L2205/02F16L9/12F16L57/04C08L23/06
Inventor 刘志光
Owner SHANGHAI ZHONGSU PIPE
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