Halogen-free flame-retarding ultrahigh-molecular weight polyethylene material and preparation method of same

A technology of ultra-high molecular weight polyethylene, which is applied in the field of halogen-free flame-retardant polyethylene, can solve the problems of affecting the mechanical properties of materials and the low degree of intermolecular fusion, and achieve good thermal stability, good flame-retardant effect, and char-forming performance Good results

Active Publication Date: 2018-03-09
SHANGHAI RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the halogen-free flame retardant system, currently, a variety of flame retardant systems are mainly compounded into an intumescent flame re

Method used

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  • Halogen-free flame-retarding ultrahigh-molecular weight polyethylene material and preparation method of same
  • Halogen-free flame-retarding ultrahigh-molecular weight polyethylene material and preparation method of same
  • Halogen-free flame-retarding ultrahigh-molecular weight polyethylene material and preparation method of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Preparation of pyro(poly)piperazine phosphate: add phosphoric acid and piperazine phosphate in the same molar ratio into a three-necked flask, heat in a water bath to 80° C., stir at 40 rpm, and react for 2 hours. After the reaction was complete, it was cooled to room temperature, filtered and dried to obtain a white intermediate product. Mix the white intermediate product with phosphoric acid again at a molar ratio of 1:1, heat the oil bath to 200°C, and continue to stir for 2 hours at a stirring rate of 40rpm. After the reaction is complete, cool, filter and dry, and finally grind to a particle size below 100μm. That is, the product pyro(poly)piperazine phosphate (PAPP) is obtained. Synthesis process see figure 1 .

[0047] Preparation of halogen-free flame-retardant ultra-high molecular weight polyethylene material: 9 parts of pyro(poly)piperazine phosphate (particle diameter <100 μm), 16 parts of diethyl aluminum hypophosphite are pre-mixed in a high-speed mixer t...

Embodiment 2

[0050] The preparation of pyro(poly)piperazine phosphate: with embodiment 1.

[0051] Preparation of halogen-free flame-retardant ultra-high molecular weight polyethylene material: 16 parts of pyro(poly)piperazine phosphate (particle diameter <100 μm), 9 parts of diethyl aluminum hypophosphite are pre-mixed in a high-speed mixer to obtain halogen-free flame retardant Combustion agent, then add 68 parts of ultra-high molecular weight polyethylene (molecular weight is 2 million) substrate, 1 part of coupling agent (KH560), 1 part of light stabilizer (brand 788), 1 part of plasticizer aliphatic dibasic acid ester 2 parts, flow modifier medium density polyethylene 2 parts, organically modified nano-scale inorganic filler nickel-based montmorillonite 2 parts, mixed by extruder, the mixing temperature is 180-200 ℃, and then injection molded to prepare a standard sample bar, test performance. The results obtained are summarized in Table 2.

[0052] The vertical combustion test of t...

Embodiment 3

[0054] The preparation of pyro(poly)piperazine phosphate: with embodiment 1.

[0055] Preparation of halogen-free flame-retardant ultra-high molecular weight polyethylene material: 18 parts of pyro(poly)piperazine phosphate (particle diameter <100 μm), 7 parts of diethyl aluminum hypophosphite were pre-mixed in a high-speed mixer to obtain halogen-free flame retardant Combustion agent, then add 68 parts of ultra-high molecular weight polyethylene (molecular weight is 2 million) base material, 1 part of coupling agent (KH570), 1 part of light stabilizer (brand 292), 1 part of phosphate ester plasticizer, flow 2 parts of modifier low-density polyethylene and 2 parts of organically modified nano-scale inorganic filler artificially synthesized mica are mixed by extruder at a mixing temperature of 180-200°C, and then prepared by injection molding into standard specimens for performance testing. The results obtained are summarized in Table 2.

[0056] The vertical combustion test o...

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Abstract

The invention relates to a halogen-free flame-retarding ultrahigh-molecular weight polyethylene material and a preparation method of same. The material is prepared from: 50-70 parts of a ultrahigh-molecular weight polyethylene base material, 0.01-25 parts of piperazine (poly) pyrophosphate, 0.01-25 parts of alkyl hypophosphite, 0-3 (not equal to 0) parts of a coupling agent, 0-3 (not equal to 0) parts of a photo-stabilizer, 0-3 (not equal to 0) parts of a plasticizer, 0-6 (not equal to 0) parts of a flow modifier, and 1-5 parts of an organically modified nano inorganic filler. The flame-retarding ultrahigh-molecular weight polyethylene material is free of halogens and has good flame-retarding effect reaching UL94 V-0 grade, and also has excellent mechanical performance.

Description

technical field [0001] The invention relates to the technical field of halogen-free flame-retardant polyethylene, in particular to a halogen-free flame-retardant ultra-high molecular weight polyethylene material and a preparation method thereof. Background technique [0002] Ultra-high molecular weight polyethylene (UHMW-PE) is a thermoplastic engineering plastic with a linear structure, its molecular weight is generally above 1.5 million, and its molecular formula is -(-CH2-CH2-)-n. Such a high molecular weight makes it have a comprehensive performance much higher than ordinary plastics such as polyethylene, with excellent impact resistance, not easy to adhere, easy to process, good dimensional stability, wear resistance, acid and alkali resistance and resistance Corrosion properties and other advantages, widely used in automotive, chemical, marine, construction, medical and electrical and electronic fields. However, ultra-high molecular weight polyethylene has defects suc...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08L23/16C08K13/06C08K9/04C08K3/34C08K3/32C08K5/3462C08K5/5313
CPCC08K2201/011C08L23/06C08L2201/02C08L2201/22C08L2205/025C08L2205/03C08L2207/062C08L2207/066C08L2207/068C08K13/06C08K9/04C08K3/346C08K5/3462C08K5/5313C08K3/34C08L23/0815C08K3/32C08L23/16
Inventor 陈涛肖雄汪济奎胡爽林倬仕许肖丽尹亮叶文齐家鹏
Owner SHANGHAI RES INST OF CHEM IND
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