Modified PET (polyethylene terephthalate) composite material and preparation method thereof

A composite material and modification technology, which is applied in the field of modified PET composite materials and its preparation, can solve the problems of low crystallization degree, poor mechanical properties, slow crystallization rate, etc., achieve low cost, reduce production and accumulation, and increase crystallinity and the crystallization rate effect

Inactive Publication Date: 2012-12-19
东莞市松燊塑料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above technologies still have the problems of slow crystallization rate, low degree of crystallization, and poor mechanical properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of preparation method of modified PET composite material, it comprises following preparation steps:

[0035] Step A: Dry 41kg of PET resin with a relative density of 1.35, a melting point of 255°C and an intrinsic viscosity of 0.6dL / g at 100°C for 2 hours, and set aside;

[0036] Step B: Add the dried PET resin and 0.2kg KH-560 into a high-speed mixer, and stir for 3 minutes to obtain the first mixed material;

[0037] Step C: Add 0.8kg of silicone powder, 12kg of brominated epoxy resin with a relative molecular weight of 15000 and a mass content of bromine of 51%, 4kg of antimony trioxide, and 0.5kg of antioxidant in the first mixed material 1010, 0.5㎏ Antioxidant 168, 1㎏ nano-montmorillonite with a particle size of 1-100nm, 2㎏ carboxylate, 0.5㎏TPP, 0.5㎏ PEG-400 and 0.5㎏ PEG-1000, continue stirring for 3-8 Minutes, obtain the second mixed material;

[0038] Step D: The second mixed material and 36.5kg of continuous glass fibers with a diameter of 4-17 microns ...

Embodiment 2

[0040] A kind of preparation method of modified PET composite material, it comprises following preparation steps:

[0041] Step A: Dry 50kg of PET resin with a relative density of 1.36, a melting point of 258°C and an intrinsic viscosity of 0.7dL / g at 100°C for 3 hours, and set aside;

[0042] Step B: Add the dried PET resin and 0.5kg KH-560 into a high-speed mixer, and stir for 4 minutes to obtain the first mixed material;

[0043] Step C: add 1 ㎏ PETS, 10 ㎏ relative molecular weight is 20000, the mass content of bromine is 52% brominated epoxy resin, 3 ㎏ polytetrafluoroethylene, 0.2 ㎏ antioxidant 1010 and 0.4㎏ Antioxidant 168, 0.4㎏ Attapulgite Clay with a particle size of 1-100nm, 1㎏ Aryl Phosphate NA-21 [Methylenebis(2,4-di-tert-butylphenyl) Aluminum Phosphate], 0.3㎏TPP, 0.2㎏PEG-400 and 0.2㎏PEG-1000, continue stirring for 5 minutes to obtain the second mixture;

[0044] Step D: The second mixed material and 32.8 kg of continuous glass fibers with a diameter of 4-17 micron...

Embodiment 3

[0046] A kind of preparation method of modified PET composite material, it comprises following preparation steps:

[0047] Step A: Dry 66 kg of PET resin with a relative density of 1.38, a melting point of 260°C and an intrinsic viscosity of 0.8 dL / g at 100°C for 4 hours, and set aside;

[0048] Step B: Add the dried PET resin and 1kg KH-560 into a high-speed mixer, and stir for 5 minutes to obtain the first mixed material;

[0049] Step C: add 1㎏ silicone powder, 1㎏ PETS, 7㎏ bromine-containing flame retardant to the first mixed material as a brominated epoxy resin with a relative molecular weight of 30000 and a mass content of bromine of 53%, 1㎏ Antimony pentoxide, 1kg polytetrafluoroethylene, 0.2kg antioxidant 1010, 0.8kg antioxidant 168, 0.2kg nano-montmorillonite with a particle size of 1-100nm, 0.3kg carboxylate, 0.1kg TPP, 0.2㎏ PEG-400 and 0.2㎏ PEG-1000, continue stirring for 8 minutes to obtain the second mixed material;

[0050] Step D: The second mixed material and ...

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Abstract

The invention relates to the technical field of the modification of PET (polyethylene terephthalate), in particular to a modified PET composite material and a preparation method of the modified PET composite material. Under a compound nucleating system of compound nucleating agent and compound nucleating accelerant, the invention improves the crystalline structure of the PET, and increases the crystallinity and the crystallization rate of the PET. Due to a compound anti-flaming system of bromine-containing fire retardant and flame retardant synergist, the generation and the accumulation of free cabin can be reduced, and the flame retardant property of the PET engineering plastics can be enhanced, therefore, due to a prefect formula system, not only can the crystallization property and the flame retardant property of the PET composite material be improved, but also the good mechanical properties such as tensile property, bending property, impact property, thermal deformation property and the like can be realized. The invention is simple in manufacture technology, and low in cost.

Description

technical field [0001] The invention relates to the technical field of modification of polyethylene terephthalate, in particular to a modified PET composite material and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET) is a thermoplastic semi-crystalline engineering plastic. Due to the high rigidity of the main chain and the slow movement of the chain segments, there are disadvantages such as slow crystallization rate and low crystallization degree, which greatly limits Its application in the field of engineering plastics. Only through proper modification can its crystallization properties and mechanical properties be improved. [0003] For example, the Chinese invention with application number 201110330512.0 provides a PET engineering plastic, its preparation method and application. The PET engineering plastic includes PET, a compatibilizer, a brominated flame retardant, a flame retardant synergist, a nucleating agent, a Nuclear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L63/00C08L27/18C08L71/08C08K13/04C08K7/14C08K3/22C08K3/34C08K5/098C08K5/523C08K5/06
Inventor 刘福军
Owner 东莞市松燊塑料科技有限公司
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