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A kind of anti-aging PCT composite material and preparation method thereof

A composite material and anti-aging technology, which is applied in the field of polymer materials, can solve the problems of low heat resistance, thermal stability and aging resistance, reduce protection strength and service life, cracking, etc., and achieve the purpose of inhibiting thermal aging degradation and photoaging Degradation, excellent shear resistance, and the effect of improving dispersibility

Active Publication Date: 2021-03-12
广东京兆工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the heat resistance, thermal stability and aging resistance of poly(1,4-cyclohexanedimethylene terephthalate) (PCT) currently used in electronics / electrical aspects are low, and it is difficult to use in harsh application environments. Under the environment, aging phenomena such as cracking and hardening are prone to occur, which reduces the protection strength and service life. It is necessary to modify the performance of PPA materials to improve the service life of the product.

Method used

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  • A kind of anti-aging PCT composite material and preparation method thereof
  • A kind of anti-aging PCT composite material and preparation method thereof
  • A kind of anti-aging PCT composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A kind of anti-aging PCT composite material, comprises the raw material of following weight portion:

[0052]

[0053] The anti-aging auxiliary agent is a mixture of antioxidants, light stabilizers, ultraviolet absorbers and light shielding agents in parts by weight of 4:5:1:1; each part of the coupling agent includes 2 parts of γ-(formazan Acryloyloxy)propyltrimethoxysilane, 1 part of isopropyl tris(dioctylpyrophosphoryloxy)titanate and 0.5 part of triisopropyl aluminate.

[0054] Each part of said antioxidant comprises 3 parts of three [2.4-di-tert-butylphenyl] phosphite, 10 parts of antioxidant DLTP, 1 part of p-hydroxyanisole and 0.5 part of antioxidant CA; said light stabilizer is From 4-benzoyloxy-2,2,6,6-tetramethylpiperidine, 2,2'-thiobis(4-tert-octylphenoxy)nickel and tris(1,2,2 , 6,6-pentamethylpiperidinyl) phosphite mixture in a weight ratio of 3:2:1.

[0055] The ultraviolet absorber is 2-(2'-hydroxyl-5'-methylphenyl) benzotriazole; every part of the li...

Embodiment 2

[0068] A kind of anti-aging PCT composite material, comprises the raw material of following weight portion:

[0069]

[0070] The anti-aging auxiliary agent is a mixture of antioxidants, photostabilizers, ultraviolet absorbers and light shielding agents in parts by weight of 4.5:4:1.5:1; each part of the coupling agent includes 2.2 parts of γ-(formazan Acryloyloxy)propyltrimethoxysilane, 1.2 parts of isopropyl tris(dioctylpyrophosphate acyloxy) titanate and 0.6 parts of triisopropyl aluminate.

[0071] Each part of said antioxidant comprises 3.5 parts of three [2.4-di-tert-butylphenyl] phosphite, 10.5 parts of antioxidant DLTP, 1.5 parts of p-hydroxyanisole and 0.6 part of antioxidant CA; said light stabilizer is From 4-benzoyloxy-2,2,6,6-tetramethylpiperidine, 2,2'-thiobis(4-tert-octylphenoxy)nickel and tris(1,2,2 , 6,6-pentamethylpiperidinyl) phosphite mixture with a weight ratio of 3.5:2.2:1.2.

[0072] The ultraviolet absorber is 2-hydroxy-4-methoxybenzophenone; every...

Embodiment 3

[0085] A kind of anti-aging PCT composite material, comprises the raw material of following weight portion:

[0086]

[0087]

[0088] The anti-aging auxiliary agent is a mixture of antioxidants, light stabilizers, ultraviolet absorbers and light shielding agents in parts by weight of 5:3.5:2:1; each part of the coupling agent includes 2.5 parts of γ-(formazan Acryloyloxy)propyltrimethoxysilane, 1.5 parts of isopropyl tris(dioctylpyrophosphate acyloxy) titanate and 0.8 parts of triisopropyl aluminate.

[0089]Each part of the antioxidant includes 4 parts of tris[2.4-di-tert-butylphenyl] phosphite, 11 parts of antioxidant DLTP, 2 parts of p-hydroxyanisole and 0.8 part of antioxidant CA; the light stabilizer is From 4-benzoyloxy-2,2,6,6-tetramethylpiperidine, 2,2'-thiobis(4-tert-octylphenoxy)nickel and tris(1,2,2 , 6,6-pentamethylpiperidinyl) phosphite mixture in a weight ratio of 5:2.5:1.5.

[0090] The ultraviolet absorber is 2-hydroxyl-4-n-octyloxybenzophenone; every ...

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Abstract

The invention relates to the technical field of polymer materials, in particular to an aging-resistant PCT composite material and a preparation method thereof. The PCT composite material includes the following raw materials in parts by weight: poly(1,4-cyclohexanedimethylene terephthalate) 30‑50 parts, 10‑15 parts of polytetrafluoroethylene, 3‑8 parts of polyvinyl chloride, 3‑5 parts of glass fiber, 5‑8 parts of anti-aging additives, 2‑6 parts of dimethyl silicone oil, coupling agent 3-7 parts, 0.5-2 parts of flame retardant and 1-2 parts of lubricant. The PCT composite material of the present invention has properties such as better tensile strength, toughness, dimensional stability, etc., through the compatible cross-linking polymerization of PTFE, PVC and PCT, the aging resistance and chemical stability of the PCT composite material are improved, and at the same time through the anti-aging Aging additives improve the thermal oxidation resistance, light oxidation resistance, and ultraviolet radiation resistance of PCT composite materials, and effectively inhibit the thermal aging degradation and photoaging degradation of PCT composite materials.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an aging-resistant PCT composite material and a preparation method thereof. Background technique [0002] PCT (1,4-cyclohexanedimethanol terephthalate) is a high-temperature-resistant, semi-crystalline thermoplastic high-temperature-resistant, semi-crystalline thermoplastic, mainly used in electronics / electrical and automotive, Among them, the products used in electronic / electrical aspects mainly include printed circuit board devices, connectors, sockets, switches, chip connectors, memory card parts, pin connectors and other products. [0003] However, the heat resistance, thermal stability and aging resistance of poly(1,4-cyclohexanedimethylene terephthalate) (PCT) currently used in electronics / electrical aspects are low, and it is difficult to use in harsh application environments. Under the environment, aging phenomena such as cracking and hardening are prone to occ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L27/18C08L27/06C08L83/04C08K7/14C08K5/526C08K5/13C08K5/3435C08K5/3475C08K3/04C08K13/04
Inventor 谭院良
Owner 广东京兆工程塑料有限公司
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