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Low-halogen polypropylene flame-resistant materials and preparing method thereof

A flame retardant material, polypropylene technology, applied in the field of polypropylene flame retardant, phenylphosphinate and brominated flame retardant compound flame retardant PP field, can solve the problem of large amount of addition, affecting the processing performance and physical properties of PP products Performance, environmental pollution and other issues, to achieve the effect of reducing the amount of addition, excellent electrical performance, and meeting environmental protection requirements

Inactive Publication Date: 2014-08-27
QINGDAO TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the shortcomings of hydrated metal compound flame retardant PP and intumescent flame retardant PP, which seriously affect the processing performance and physical properties of PP products, and retain the halogen-antimony synergistic flame retardant system due to the pollution of halogen-containing flame retardants Environmental defects

Method used

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  • Low-halogen polypropylene flame-resistant materials and preparing method thereof
  • Low-halogen polypropylene flame-resistant materials and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-8

[0029] Examples 1-8 are the flame retardant effects of FR-006 and MHB compound flame retardant PP. The ratio of each raw material is shown in Table 1. The general method of the experimental process: Weigh the raw materials according to the weight percentage, and stir each component in a high-speed mixer. The flame retardant PP material is obtained by lower extrusion granulation.

[0030] Table I

[0031]

[0032] As can be seen from the data analysis in Table 1: Examples 1-8 keep the DMDPB addition 0.1wt% constant, discuss FR-006, MHB (melamine hydrobromide), DMDPB (2,3-dimethyl-2, 3-diphenylbutane) compounded on the flame retardancy of PP. Because DMDPB is used as a free radical initiator in PP flame retardancy, it promotes the breakage of PP molecular chains, and then promotes the droplet dripping; while bromine can promote the droplet non-combustibility, so as to promote dripping and flame retardancy; among them, the implementation Example 1: The total addition amoun...

Embodiment 9-16

[0034] Examples 9-16 are the flame retardant effects of FR-006 and TBC compounded flame retardant PP, the ratio of each raw material is shown in Table 2, and the preparation process is the same as the example in Table 1.

[0035] Table II

[0036]

[0037]As can be seen from the data analysis in Table 2, the embodiment 9-16 keeps the 0.1wt% addition of DMDPB unchanged, and studies FR-006, three (2,3-dibromopropyl) isocyanurate (TBC), The flame retardant effect of DMDPB on PP. The role of DMDPB (2,3-dimethyl-2,3-diphenylbutane) in PP flame retardancy exists as a free radical initiator. Wherein embodiment 15: FR-006, TBC, DMDPB total addition amount just can reach UL941.6mm V2 level at 0.8wt%; When maintaining the addition amount of TBC0.3wt% in embodiment 13-14, add inorganic particle hydrogen oxidation Magnesium (MH), when MH is 0.1-0.2wt%, the flame-retardant PP can reach UL941.6mm V2 level, and 0.5wt% of phenylphosphinate aluminum (FR006) is added in Examples 15-16, and...

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Abstract

The invention discloses low-halogen polypropylene flame-resistant materials and a preparing method thereof. The low-halogen polypropylene flame-resistant materials are obtained by the fact that homo-polypropylene, composite-prepared fire retardant, lubricating agents, antioxygen agents and inorganic filler are evenly mixed, and then extrusion pelleting is carried out through a double-screw extruder. The composite-prepared fire retardant is formed by mixing of phosphorus-containing fire retardant phenyl aluminum hypophosphite, bromine-containing fire retardant melamine hydrobromide or flame retardant TBC and flame retardant synergist 2,3-dimethyl-2,3-diphenylbutane. The antioxygen agents are formed by mixing of hindered phenol antioxygen agents 1010 and phosphite ester antioxygen agents 168. The phenyl aluminum hypophosphite is used as a foundation and is mixed with brominated flame retardant in a composite mode, through P-Br synergistic effect, flame retardant with the total adding amount not larger than 2wt% is used, flame-resistant PP with balanced comprehensive performance is obtained, the requirement for environment protecting is met, the flame resistance reaches American UL941.6mm V2, and the mechanical property and the electrical property are great.

Description

technical field [0001] The invention relates to the flame retardant field of polypropylene (PP), in particular to the technical field of flame retardant PP compounded with phenylphosphinate and brominated flame retardant. Background technique [0002] PP molecular formula (C3H6)n is a general-purpose thermoplastic resin prepared by coordination polymerization of propylene. Non-toxic, light weight, excellent mechanical properties, good electrical insulation, good chemical corrosion resistance. And because of its low price and easy molding process, it is widely used in electronic appliances, communication equipment, household appliances, automobiles, building materials and other fields. However, the oxygen index of PP is only 17.4, which has poor flame resistance and is easy to burn. Moreover, the heat generated by combustion is large, and it is easy to produce a large amount of molten dripping and cause a fire. Therefore, the flame retardant research of PP becomes very impo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/02C08K5/5313C08K5/3492C08K5/01C08K3/22C08K5/20C08K5/134C08K5/526
CPCC08K13/02C08K3/22C08K5/1345C08K5/20C08K5/34922C08K5/526C08K5/5313C08K2003/2224C08K2003/2241C08K2201/003C08K2201/014C08L2201/02C08L23/12
Inventor 李艳
Owner QINGDAO TECHN COLLEGE
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