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Modified reinforced flame-retardant PBT material and preparation method thereof

A PBT resin and modification technology, which is applied in the field of modified and enhanced flame-retardant PBT materials and its preparation, can solve the problems of poor comprehensive performance of PBT materials, achieve low deflection, and broaden the effect of application range

Inactive Publication Date: 2019-03-08
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is: the problem that the comprehensive performance of the existing PBT material modified by enhanced flame retardant is not good

Method used

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  • Modified reinforced flame-retardant PBT material and preparation method thereof
  • Modified reinforced flame-retardant PBT material and preparation method thereof
  • Modified reinforced flame-retardant PBT material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Weigh each raw material according to the raw material formula in Table 1, wherein the TH6100 melt index of PBT resin is 23-32g / 10min (235°C / 2.16kg, tested according to the national standard GB / T3682-2000), the tensile strength is 50-60MPa, and the fracture Elongation >200%; glass fiber is alkali-free glass long fiber, particle size is 14μm; flame retardant is brominated epoxy resin and antimony trioxide (purity: 99.99%) compounded by mass ratio of 3:1 Compound, wherein the weight percentage of bromine in the brominated epoxy resin is 51-53%, the molecular weight of the epoxy resin is 3000-6000; the anti-dripping agent is polytetrafluoroethylene masterbatch, which is ground into powder when used , wherein the weight percentage of polytetrafluoroethylene is 50%; the inorganic filler is nano-active calcium carbonate, and the particle size is 3000 mesh; the coupling agent is γ-mercaptopropyltrimethoxysilane; the toughening agent is ethylene- Methyl acrylate-glycidyl methacr...

Embodiment 2

[0026] The preparation method of Examples 2-4 is the same as that of Example 1, and the specific raw material ratio is shown in Table 1, wherein the ratio of Example 2 is exactly the same as that of Example 1, the only difference is that the particle size of the glass fiber in Example 2 is 11 μm The product of embodiment 2-4 is tested according to national standard, and product performance data is as shown in table 2~5.

[0027] The preparation method of Comparative Example 1-2 is the same as that of Example 1, and the specific raw material ratio is shown in Table 1, wherein the alkali-free glass fibers in Comparative Example 1-2 are chopped fibers with a particle size of 8 μm; Comparative Example 1-2 The products are tested according to the national standard, and the product performance data are shown in Table 2.

[0028] Table 1 Raw materials and raw material ratios of modified reinforced flame-retardant PBT materials (unit: part)

[0029] components

Example 1 ...

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Abstract

The invention discloses a modified reinforced flame-retardant PBT material and a preparation method thereof, and belongs to the technical field of polymer engineering plastic modification. The modified reinforced flame-retardant PBT material comprises the following components in parts by weight: 40-45.5 parts of a PBT resin, 25-30 parts of a glass fiber, 12-15 parts of a flame retardant, 0.3-0.5 part of an anti-drip agent, 0-5 parts of an inorganic filler, 0-2 parts of a coupling agent, 3-10 parts of a toughening agent, 0-3 parts of a lubricant, 0.2-0.5 part of a light stabilizer, 0.1-0.4 partof an ultraviolet absorber and 0.2-0.4 part of an antioxidant. The modified reinforced flame-retardant PBT material having the advantages of high weather resistance, high impact resistance, low deflection and scratch resistance is prepared by reasonably controlling the components in the formulation and the component matching in a low-cost manner, and can be widely applied to electronic appliances, outdoor high weather-proof products.

Description

technical field [0001] The invention belongs to the technical field of modification of polymer engineering plastics, and in particular relates to a modified reinforced flame-retardant PBT material and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT) is one of the top five engineering plastics in the world. Because of its good comprehensive properties, it is widely used in auto parts, household appliance casings, optical fiber casings, spinning and textiles and other fields. However, in terms of mechanical properties, the main disadvantage of pure PBT is that it is sensitive to notch impact, the shrinkage ratio of injection molded products is large, and the warping phenomenon is relatively serious. Therefore, PBT should be enhanced and modified in actual use. At present, various grades of PBT modified by glass fiber account for more than 70% of the total output of PBT. Although the addition of glass fiber improves the notched impact...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L27/18C08L23/08C08L77/00C08L63/00C08K13/04C08K7/14C08K3/26C08K3/22C08K3/34C08K5/132C08K5/134C08K5/526
CPCC08K2003/265C08K2201/011C08L67/02C08L2201/02C08L2201/08C08L2205/035C08L27/18C08L23/0869C08L77/00C08L63/00C08K13/04C08K7/14C08K3/26C08K3/2279C08K3/34C08K5/132C08K5/1345C08K5/526
Inventor 周刚潘晓勇贺佳杰莫荣强
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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