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Halogen-free flame retarding and glass fiber reinforced resin and its preparation method

A technology of reinforced resin and alkali-free glass fiber, which is applied in the field of reinforced resin and its preparation, can solve the problems of low flame retardant efficiency, large usage, and large odor, and achieve improved flame retardant efficiency, less smoke generation, and prevention of release Effect

Active Publication Date: 2012-03-14
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic red phosphorus-based flame retardants can only be red and black, with a strong smell. Red phosphorus is prone to natural phenomena and easy to precipitate during high-speed and high-pressure injection molding; low cost too high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0042] A preparation method of a halogen-free flame-retardant glass fiber reinforced resin, the components and ingredients are shown in Table 1. Among them, the toughening agent is ethylene-methyl acrylate-glycidyl methacrylate random terpolymer, the antioxidant is 1076, the compatibilizer is acrylic acid, and other processing aids are plasticizer dioctyl phthalate A mixture of ester, nucleating agent ethylene propylene rubber, and lubricant fatty acid amide.

[0043] Table 1

[0044] material name

Example 1

Example 2

Example 3

Example 4

Example 5

PBT(g)

551

531

491

481

302

Glass fiber (g)

300

300

300

300

500

Toughener (g)

40

40

40

40

40

Ammonium polyphosphate (g)

58

70

90

95

90

Pentaerythritol (g)

15

20

30

32

29

Melamine (g)

7

10

20

23

20

Antioxidant (...

Embodiment 6

[0049] A preparation method of a halogen-free flame-retardant glass fiber reinforced resin, the method comprising the following steps:

[0050](1) Prepare materials according to the following components and contents: PBT resin 30g, alkali-free glass fiber 50g, halogen-free flame retardant 8g, toughening agent 9.4g, antioxidant 0.6g, compatibilizer 1g, processing aid 1g, Among them, the alkali-free glass fiber is soaked in silane coupling agent for 2 hours, and its surface is treated by coupling agent. The toughening agent is ethylene-methyl acrylate binary copolymer, the antioxidant is 168, and the compatibilizer is methyl Acrylate, the processing aid is iron oxide red, and the halogen-free flame retardant is ammonium polyphosphate-pentaerythritol-melamine compound, which is prepared by the following steps:

[0051] Soak ammonium polyphosphate in the anionic surfactant of magnesium salt of fatty acid with 14 carbon atoms, treat its surface, then dissolve ammonium polyphosphate...

Embodiment 7

[0055] A preparation method of a halogen-free flame-retardant glass fiber reinforced resin, the method comprising the following steps:

[0056] (1) Prepare materials according to the following components and contents: PBT resin 75g, halogen-free flame retardant 15g, toughening agent 9.3g, antioxidant 0.2g, processing aid 0.5g, wherein the toughening agent is ethylene-methacrylate The mixture of ester binary copolymer and ethylene-vinyl acetate binary copolymer, the antioxidant is 246, the processing aid is light stabilizer 622, the halogen-free flame retardant is ammonium polyphosphate-pentaerythritol-melamine compound, Prepared through the following steps:

[0057] Soak ammonium polyphosphate in the anionic surfactant of zinc salt of fatty acid with 18 carbon atoms, treat its surface, then dissolve ammonium polyphosphate in chloroform, add melamine and pentaerythritol to it, and then add peroxide The benzoyl cross-linking agent carries out cross-linking, improves the bond be...

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PUM

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Abstract

The invention relates to halogen-free flame retarding and glass fiber reinforced resin and its preparation method. The reinforced resin comprises the following components by weight percent (wt%): 30-75 of PBT (poly(butylene terephthalate)) resin, 0-50 of alkali-free glass fiber, 8-15 of a halogen-free fire retardant, 0-10 of a toughening agent, 0.2-0.6 of an anti-oxidant, 0-1 of a compatibilizer,and 0.5-1 of a processing aid. The preparation method consists of the steps of: conducting surface treatment to alkali-free glass fiber with a coupling agent, and adsorbing the halogen-free fire retardant on the surface of the alkali-free glass fiber, drying the PBT resin, and mixing it with the toughening agent, the anti-oxidant, the compatibilizer and the processing aid and placing the mixture in a double-screw extruder, adding alkali-free glass fiber in the downstream of the extruder, and carrying out fusing, mixing, extruding, cooling, drying and granulating, thus obtaining the product. The reinforced resin of the invention has the advantages of no halogen, low smoke, environmental protection, good flame retarding effect, and good disperse effect of the halogen-free fire retardant in a resin matrix. When heated, the halogen-free fire retardant can form a uniform, porous, expanded and compact carbon layer, which cooperates with the glass fiber so as to prevent the diffusion of heat, combustible volatile substances, and the like.

Description

technical field [0001] The invention relates to a reinforced resin and a preparation method thereof, in particular to a halogen-free flame-retardant glass fiber reinforced resin and a preparation method thereof. Background technique [0002] At present, in halogen-free flame-retardant engineering plastics, the dispersion and efficiency of halogen-free flame retardants in resins have been the focus of research. Polybutylene terephthalate (PBT) is a crystalline thermoplastic engineering plastic widely used in electronic appliances, auto parts, machinery, household goods, etc. For a long time, the flame retardants used in the PBT flame retardant system are mostly halogen flame retardants, and PBT uses halogen and Sb 2 o 3 The flame retardant of the compound system can obtain certain flame retardancy, but the flame retardant PBT prepared by this method will produce a large amount of black smoke when burning, and has certain corrosiveness. Some products are toxic and have envir...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K13/06C08K7/14C08K5/3492C08K3/32C08K5/053
Inventor 胡沁李强罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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