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UHMWPE (ultrahigh molecular weight polyethylene) composite material coated with inorganic titanium and preparation method of UHMWPE composite material

A composite material, inorganic titanium technology, used in fiber types, textiles and papermaking, fiber processing, etc., can solve the problems of titanium dioxide nanoparticle deposition, lack of reactive groups, poor adhesion, etc., to avoid photodegradation. Strong, uniform coating effect

Active Publication Date: 2017-07-07
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because UHMWPE is composed of methylene groups, it has high axial orientation, high crystallinity, smooth surface (its surface lubricity is second only to polytetrafluoroethylene in plastics), and lack of reactive groups. The above characteristics make UHMWPE and many poor adhesion between materials
At present, there is no report on the deposition of titanium dioxide nanoparticles on the surface of UHMWPE materials through covalent bonds.

Method used

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  • UHMWPE (ultrahigh molecular weight polyethylene) composite material coated with inorganic titanium and preparation method of UHMWPE composite material
  • UHMWPE (ultrahigh molecular weight polyethylene) composite material coated with inorganic titanium and preparation method of UHMWPE composite material
  • UHMWPE (ultrahigh molecular weight polyethylene) composite material coated with inorganic titanium and preparation method of UHMWPE composite material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0048] figure 1 Shown is the reaction scheme in the preparation method in Examples 1-6.

[0049] In the following examples, there is no strict limitation on the number average molecular weight of UHMWPE, usually between 1.5 million and 6 million can be implemented.

Embodiment 1

[0051] (1) At room temperature, 100 parts of UHMWPE were added to a mixed solution consisting of 3200 parts of methanol and 380 parts of γ-methacryloxypropyltrimethoxysilane (MAPS). After the above system was blown with nitrogen for 20 minutes at room temperature, it was placed in a cobalt source for irradiation with an absorbed dose of 5 kGy and an irradiation time of 17 hours. The grafted product was ultrasonically cleaned with methanol for 1 hour, placed in an oven, and dried at 60° C. for 3 hours to obtain the grafted product.

[0052] (2) At room temperature, 240 parts (36.5 wt %) of hydrochloric acid was added to 2000 parts of deionized water to form an aqueous solution of hydrochloric acid. Add 88 parts of titanium tetrachloride dropwise into the aqueous solution of hydrochloric acid within 20 minutes, and stir for 10 minutes after the dropwise addition is completed. 25 parts of the grafted product were added to an aqueous solution in which titanium tetrachloride was d...

Embodiment 2

[0054] (1) Add 100 parts of UHMWPE to a mixed solution consisting of 5600 parts of ethanol and 1600 parts of γ-methacryloxypropyltrimethoxysilane (MAPS) at room temperature. After the above system was blown with nitrogen for 40 minutes at room temperature, it was placed in a cobalt source for irradiation with an absorbed dose of 50 kGy and an irradiation time of 5 hours. The grafted product was ultrasonically cleaned with ethanol for 1.5 h, placed in an oven, and dried at 50° C. for 1 h to obtain the grafted product.

[0055] (2) Configure solution 1, solution 2 and solution 3. Solution 1: Dissolve 966 parts of tetrabutyl titanate in 790 parts of ethanol. Solution 2: Mix 790 parts of ethanol, 30 parts of formic acid and 30 parts of deionized water evenly. Solution 3: Dissolve 45 parts deionized water in 395 parts ethanol.

[0056] The solution 2 was slowly added dropwise into the solution 1 within 30 minutes, and after stirring evenly, 25 parts of grafted products were adde...

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Abstract

The invention discloses a UHMWPE (ultrahigh molecular weight polyethylene) composite material coated with inorganic titanium and a preparation method of the UHMWPE composite material. The preparation method includes (1), mixing UHMWPE with alcohol solvent and gamma-methacryloxy propyl trimethoxyl silane, subjecting the material to irradiation grafting at the room temperature under an anaerobic condition, and washing and drying the material to obtain a grafted product; (2), coating the grafted product with the inorganic titanium, and performing washing and drying after reaction to obtain the UHMWPE composite material. The UHMWPE composite material coated with the inorganic titanium has the advantages that adhesion between the surface inorganic titanium layer and the UHMWPE is high, the coating layer is uniform, the composite fiber material has high mechanical property, and the inorganic titanium layer does not have light degradation effect on a UHMWPE base material; the composite fiber material can be further composited with high-temperature-resistant thermosetting resin, and is used for preparing advanced composite materials applicable to the fields such as aerospace and transportation. The preparation method has the advantages of simplicity and easiness in process and high applicability.

Description

technical field [0001] The invention relates to a UHMWPE composite material coated with an inorganic titanium layer and a preparation method thereof. Background technique [0002] In recent years, textiles with self-cleaning, hydrophobic, antistatic, photocatalytic, and UV shielding functions have attracted great attention due to their excellent functionality. Nano-titanium dioxide is a functional fine inorganic material with high added value, and it is a non-toxic and tasteless powder. Due to its excellent properties, nano-titanium dioxide is widely used in the polymer material industry such as coatings, rubber, plastics, and polymer-based composite materials. At present, the research hotspots on the application of titanium dioxide in functional textiles mainly focus on photocatalysis and ultraviolet absorption functions. However, while titanium dioxide endows new materials with excellent photocatalytic properties, it can also degrade organic carriers of titanium dioxide ...

Claims

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Application Information

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IPC IPC(8): D06M14/28D06M11/46C08J7/18C08J7/12C08L23/06D06M101/20
CPCC08J7/12C08J7/18C08J2323/06C08L23/06C08L2207/068D06M11/46D06M14/28D06M2101/20D06M2200/25
Inventor 胡江涛吴国忠王谋华高乾宏邢哲许璐李荣
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI