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Surface treatment method for preventing rubber product from blooming

A technology for rubber products and surface treatment, applied in the field of rubber product production, can solve the problems of high cost, complicated process and poor anti-frost effect, etc.

Active Publication Date: 2019-12-31
SHANDONG XINGYU GLOVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: poor anti-blooming effect, increased process steps and increased cost
(2) Surface protection, which includes two types: a. Adding paraffin: the most common is to add paraffin to the formula, but paraffin can only be used as a protective agent under static conditions, and it is extremely unfavorable to latex products under dynamic conditions; It is also greatly affected by the ambient temperature, and after the paraffin is precipitated on the surface of the vulcanized rubber, the surface of the product will lose its luster, which is unfavorable to some latex products that require a beautiful appearance.
It is precisely because of the limitations of these conditions that this method has not been actually implemented and applied in actual production.
(3) Change the vulcanization method: a. Irradiation vulcanization: However, due to the constraints of many factors, it is difficult to use large-scale use of irradiated rubber in production
Its disadvantages are: due to the variability of the current process conditions, raw material performance and storage environment, this method cannot adapt to and meet such variable conditions, resulting in poor anti-frost effect
(5) Adsorption: Adding adjuvants with strong absorptive properties to absorb excess compounding agents has the disadvantages of difficult selection of adjuvants, high cost, difficulty in adapting to and satisfying changing conditions, and cannot fundamentally solve the problem of blooming
[0005] However, the above-mentioned prior art either uses graphene to coat the vulcanizing agent, or grafts the vulcanization accelerator to the surface of graphene, so graphene is ultimately an essential part of the rubber compound formulation, and it must have the following problems: First, the process is complicated, and it is necessary to coat sulfur particles or graft accelerators to the surface of graphene at specific temperatures, solvent environments, and acid-base environments; The amount is directly proportional, otherwise it will not be possible to coat the sulfur or graft all the accelerators, and too much graphene will cause the final rubber product to harden, and a large amount of graphene will also bring high costs; third, resulting in rubber products The phenomenon of blooming does not only contain sulfur or accelerators, but various other small molecule complexes are also components of blooming
Therefore, the above-mentioned technology can not effectively play the problem of suppressing the blooming of rubber products

Method used

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  • Surface treatment method for preventing rubber product from blooming
  • Surface treatment method for preventing rubber product from blooming
  • Surface treatment method for preventing rubber product from blooming

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Take a cured natural rubber glove from the natural rubber glove preparation workshop, cut 4 finger cots on the glove, use 95% ethanol to scrub the surfaces of the 4 finger cots, rinse them with water, and then dry them. Prepare 200mL of A171 (vinyltrimethoxysilane) solution with a concentration of 1wt% (solvent is alcohol: water volume = 5:5), and prepare three different specifications of oxidation 150 mL each of the graphene suspensions. The graphene oxide in the graphene oxide suspensions of three specifications was prepared from the same batch of hummer's method.

[0049] Use tweezers to dip the four finger cots into the A171 solution for 4-5 seconds, take them out, and place them together in an oven at 60°C for drying. Take it out after drying, and then use tweezers to pick up three of the finger cots and then dip them into the graphene oxide suspensions with concentrations of 0.01wt%, 0.05wt%, and 0.1wt%, respectively, and completely impregnate the 4- Take it out...

Embodiment 2

[0054] Take a natural rubber glove with cured rubber from the natural rubber glove preparation workshop, cut a finger cot from the glove, scrub the surface of a finger cot with 95% ethanol and rinse with water, and then dry it.

[0055] Prepare 200mL of A151 (vinyltriethoxysilane) solution with a concentration of 1.5wt% (solvent is alcohol: water volume = 5:5), and prepare 150mL of graphene oxide suspension with a concentration of 0.1wt%. Among them, graphene oxide comes from hummer's method.

[0056] Use tweezers to dip the cut finger cot into the A151 solution for 4-5 seconds, take it out, and place it in an oven at 60°C to dry. Take it out after drying, then pick up the finger cot with a nickel and turn it into a graphene oxide suspension with a concentration of 0.1wt%, take it out after completely soaking for 4-5s, and place it in an oven at 120°C for drying ,take out. Stir and wash in 200mL deionized water three times, then dry at 100°C.

[0057] Place the finger cot u...

Embodiment 3

[0059] Take a cured natural rubber glove from the natural rubber glove preparation workshop (add black color paste to make a pure black glove), cut 3 finger cots on the glove, and put the 3 finger cots Surfaces were scrubbed with 95% ethanol and rinsed with water and then dried.

[0060] The preparation concentration is 200mL of A171 (vinyltrimethoxysilane) solution of 2wt% (solvent is alcohol: water volume = 5:5), and the preparation concentration is 0.01wt%, 0.1wt% two specifications of graphene oxide suspension respectively 200mL. The graphene oxide in the graphene oxide suspension used was prepared from the same batch of hummer's method.

[0061] Use tweezers to dip the three finger cots into the A171 solution for 4-5 seconds, take them out, and place them together in an oven at 60°C for drying. Take it out after drying, then pick up two of the finger cots with a nickel and dip them in the graphene oxide suspension with a concentration of 0.01wt% and 0.1wt%, respectively...

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Abstract

The invention relates to a surface treatment method for preventing a rubber product from blooming. The method comprises the following step: forming a protective layer made of a two-dimensional material on the surface of a membrane of the rubber product after the rubber product is prepared. The rubber product treated by the method has the advantages that a compact and stable protective layer is obtained on the surface of the rubber product, migration of a compounding agent in the rubber product is prevented, entry of external destructive factors is blocked, and the membrane of the rubber product forms a closed system, so that the purpose of preventing the rubber product from blooming is achieved; and the rubber product has better weather resistance and durability while appearance quality ofthe rubber product is taken into account.

Description

technical field [0001] The invention relates to the technical field of rubber product production, in particular to a surface treatment method for preventing rubber products from blooming. Background technique [0002] The blooming phenomenon refers to the migration of some small molecular compounds (various compounding agents) in the rubber compound formula, and precipitates on the surface of rubber products or semi-finished products, forming a layer of white frost-like exudate that adheres to the surface of rubber semi-finished products or vulcanized products. The phenomenon. This phenomenon not only seriously affects the appearance and performance of the product, but even causes delayed skin allergy of the user, such as disposable natural latex glove products, ethylene-propylene rubber sealing strips, etc., due to the direct contact between the spray cream ingredients and the user's skin Contact can cause itching and rashes on the user's skin. Therefore, solving the bloo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C71/00
CPCB29C71/00B29C71/0009
Inventor 周星余张建明黄莎莎黄文旭刘成顺孙永峰卢豪段咏欣
Owner SHANDONG XINGYU GLOVES
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