PPS/PBT composite material for NMT and preparation method thereof

A composite material and PPS resin technology, which is applied in the field of PPS/PBT composite materials for NMT and its preparation, can solve the problems of poor compatibility between glass fiber and PBT, inconsistent longitudinal and transverse shrinkage rates, and brittle fracture of materials. Consistent shrinkage in all directions, increased firmness, and enhanced binding ability

Inactive Publication Date: 2021-05-14
深圳力越新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the mechanical properties of PBT modified by glass fiber are enhanced, the longitudinal and transverse shrinkage rates of PBT products modified by glass fiber are inconsistent, which is easy to warp the product, and the compatibility between glass fiber and PBT is poor, resulting in The two are easy to separate, making the local viscosity uneven
When stripping fiber-modified PPS, due to the weak cross-sectional bonding force between PPS resin and glass fiber, the glass fiber is less surrounded by PPS resin, resulting in brittle fracture of the material

Method used

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  • PPS/PBT composite material for NMT and preparation method thereof
  • PPS/PBT composite material for NMT and preparation method thereof
  • PPS/PBT composite material for NMT and preparation method thereof

Examples

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Effect test

preparation example 1

[0038] A modified chitosan, the preparation method of which is:

[0039] Mix 10 g of glycerin-chitosan and 40 g of dehydrated dimethyl sulfoxide, add 1 g of polycaprolactone containing isocyanate groups, and then react at 40 ° C for 2 days to prepare a reaction solution, using absolute ethanol and formaldehyde The mixed solution of ether precipitates the reaction solution, and uses dichloromethane to purify the precipitate through Soxhlet extraction to obtain modified chitosan; the weight ratio of absolute ethanol and methyl ether in the mixed solution is 1:1, The CAS number of the methyl ether is 115-10-6.

[0040] The preparation method of the glycerin-chitosan is as follows: after mixing 1 g of chitosan and 40 g of acetic acid solution with a mass concentration of 1%, stirring at 50° C. for 1 day, dialyzing the reaction solution for three days with a dialysis bag, and then dialysis the reaction solution by rotary evaporation. Concentrate the dialysate, and then freeze-dry ...

preparation example 2

[0044] Preparation Example 2 is based on Preparation Example 1, and the only difference from Preparation Example 1 is that the weight ratio of glycerol-chitosan, dimethyl sulfoxide and polycaprolactone containing isocyanate groups is 1:4:0.3 .

preparation example 3

[0046]Preparation Example 3 is based on Preparation Example 1, and the only difference from Preparation Example 1 is that the weight ratio of glycerol-chitosan, dimethyl sulfoxide and polycaprolactone containing isocyanate groups is 1:4:0.2 .

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Abstract

The invention relates to the technical field of nanometer forming, and particularly discloses a PPS / PBT composite material for NMT and a preparation method thereof. The PPS / PBT composite material for the NMT is prepared from the following components in parts by weight: 50-65 parts of PPS resin, 15-25 parts of PBT resin and 15-25 parts of auxiliaries, and the auxiliaries are prepared from modified chitosan, polyethylene glycol, a thickening agent and a surfactant in a weight ratio of 1:(0.3-0.5):(0.01-0.03):(0.001-0.01); the preparation method comprises the following steps: S1, mixing the modified chitosan, the polyethylene glycol and the surfactant to obtain a mixture; and S2, uniformly mixing PBT resin, PPS resin, a thickening agent and the mixture, extruding through an extruder, and granulating to obtain the PPS / PBT composite material for NMT. The PPS and PBT composite material disclosed by the invention can be used for a nano forming technology, and the bonding firmness of the PPS / PBT composite material for NMT and metal can be improved.

Description

technical field [0001] The application relates to the field of nano-molding technology, more specifically, it relates to a PPS / PBT composite material for NMT and a preparation method thereof. Background technique [0002] NMT (Nano Molding Technology) is a nano molding technology that combines metal and plastic nanotechnology by injecting resin onto the T-treated metal surface to connect metal and resin. NMT can directly inject plastic onto the metal surface and achieve a perfect and strong bond. It can replace traditional gluing, in-mold coating injection, metal riveting and grafting and other technologies. It has outstanding advantages and can reduce the overall thickness and height of the product. The finished product Excellent mechanical structure and mechanical strength make the bonding between plastic and metal highly reliable. [0003] With the development of NMT technology, in recent years, the resin materials directly applied to NMT are glass fiber modified PPS res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/02C08L67/02C08L5/08C08L71/02C08K7/26C08K3/34
CPCC08L81/02C08L2205/035C08L2201/08C08K2201/011C08K2201/005
Inventor 吴兆启王冲
Owner 深圳力越新材料有限公司
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