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Anti-UV (Ultraviolet) screw protecting sleeve and preparation method thereof

A technology for protective sleeves and screws, applied to nuts, bolts, mechanical equipment, etc., can solve the problems of no anti-oxidation, anti-UV, and increase the cost of use, so as to ensure quality and service life, avoid damage, and prevent safety problems Effect

Pending Publication Date: 2018-07-10
牛永强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent CN107504047A discloses a sheath screw, the structure of which includes a screw shank, a screw head and a screw head cover; the screw head is in a stepped cylindrical structure; the periphery of the screw head is provided with a screw head cover; the screw head cover is made of flexible material However, the sheath screw is mainly used to prevent the screw head from scratching the objects in contact with it, and has no anti-oxidation and anti-UV effects. It is necessary to replace the screw head cover frequently to prevent the screw from rusting, which increases the The cost

Method used

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  • Anti-UV (Ultraviolet) screw protecting sleeve and preparation method thereof
  • Anti-UV (Ultraviolet) screw protecting sleeve and preparation method thereof
  • Anti-UV (Ultraviolet) screw protecting sleeve and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] An anti-UV screw protective sleeve, the protective sleeve is one-time injection molding, the whole is made of elastic plastic, including a ring-shaped base 3 and a sleeve hole 2, the sleeve hole 2 is a hollow cylindrical structure, and its inner diameter is determined by the upper Incremental to the bottom, the upper part of the sleeve hole 2 is provided with a pull-out part 1 with a closed upper end and an open lower end. Slightly smaller, the shape and size of the sleeve hole 2 are adapted to the outer contour shape and size of the screw, and the inside of the sleeve hole 2 and the dialing part 1 are provided with a tooth structure.

[0032] The anti-UV screw protective cover is composed of the following components by mass fraction: polyethylene resin 30%, PVC resin 51%, white carbon black 2%, dibasic lead phosphite 2%, phenyl o-hydroxybenzoate 0.2%, Polypropylene grafted maleic anhydride 2.5%, n-octadecyl propionate 0.15%, lauroyl peroxide 3%, nanoscale composite hyd...

Embodiment 2

[0038] An anti-UV screw protective sleeve, the protective sleeve is one-time injection molding, the whole is made of elastic plastic, including a ring-shaped base 3 and a sleeve hole 2, the sleeve hole 2 is a hollow cylindrical structure, and its inner diameter is determined by the upper Incremental to the bottom, the upper part of the sleeve hole 2 is provided with a pull-out part 1 with the upper end closed and the lower end open. Small, the shape and size of the sleeve hole 2 is compatible with the external profile shape and size of the screw, and the inside of the sleeve hole 2 and the dialing part 1 are provided with a tooth structure.

[0039] The anti-UV screw protective cover is composed of the following components by mass fraction: polyethylene resin 40%, PVC resin 45%, white carbon black 3%, dibasic lead phosphite 1.5%, ultraviolet absorber UV-P 0.3%, Chlorinated polypropylene 2%, dilauryl thiotripropionate 0.2%, m-toluoyl chloride 3%, nanoscale composite hydroxide-i...

Embodiment 3

[0045]An anti-UV screw protective sleeve, the protective sleeve is one-time injection molding, the whole is made of elastic plastic, including a ring-shaped base 3 and a sleeve hole 2, the sleeve hole 2 is a hollow cylindrical structure, and its inner diameter is determined by the upper Incremental to the bottom, the upper part of the sleeve hole 2 is provided with a pull-out part 1 with a closed upper end and an open lower end. Small, the shape and size of the sleeve hole 2 is compatible with the external profile shape and size of the screw, and the inside of the sleeve hole 2 and the dialing part 1 are provided with a tooth structure.

[0046] Polyethylene resin 44%, PVC resin 35%, white carbon black 5%, dibasic lead phosphite 2%, 2-hydroxy-4-methoxybenzophenone 0.4%, methacrylic acid-styrene-butylene 2% diene polymer, 0.3% bis-stearyl thiodipropionate, 4% sulfacetamide, 3% nanoscale composite hydroxide-inorganic filler powder, 2.3% dispersant, 2, 4, 6 -Tris(2'-butoxyphenyl...

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Abstract

The invention discloses an anti-UV (Ultraviolet) screw protecting sleeve and a preparation method thereof. The anti-UV screw protecting sleeve is formed by a circular ring-shaped base and a sleeve hole. The sleeve hole is of a hollow cylindrical structure; a drawing part with a sealed upper and an opened lower end is arranged on the upper part of the sleeve hole; the size of a horizontal cross section of the drawing part is slightly smaller than the size of a horizontal cross section of the sleeve hole; and a tooth structure is arranged in the sleeve hole and the drawing part. The protecting sleeve is prepared from the following components in percentage by mass: 30 percent to 50 percent of polyethylene resin, 35 percent to 55 percent of PVC (Polyvinyl Chloride) resin, 2 percent to 3 percent of white carbon black, 1 percent to 5 percent of white carbon black, 0.2 percent to 0.4 percent of anti-UV material, 2 percent to 3 percent of compatilizer, 0.15 percent to 0.3 percent of antioxidant, 3 percent to 6 percent of coupling agent, 2.5 percent to 3.5 percent of nanoscale composite type hydroxide-inorganic filler powder, 1.5 percent to 5 percent of dispersing agent, and 0.65 percent to4 percent of light stabilizer. According to the protecting sleeve prepared through the invention, the occurrence of the phenomenon that a metal product is oxidized by air so as to be rusted can be effectively reduced, and an antioxidant and ant-UV material is added into the protecting sleeve, so that the service life of the protecting sleeve is prolonged.

Description

technical field [0001] The invention belongs to the technical field of protection of metal parts such as screws and bolts, and in particular relates to an anti-UV screw protective cover and a preparation method thereof. Background technique [0002] Bolts, screws and other components are very frequently used fasteners. If the bolts and screws are exposed to the air for a long time, they are easily oxidized and rusted by the air during the erosion process of natural sunlight and wind and rain. In a dark and humid environment, it doesn't take long for rust spots to appear on the threads of bolts and screws. When the screw or bolt is oxidized or rusted, its fixing ability will decrease, and the object fixed by it will easily tilt or even fall over. Cause the generation of its loosening phenomenon, thus buried bigger potential safety hazard. And the sharp edge or burr of its screw head in the process of using of traditional screw is easy to scratch the object that touches arou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B33/00F16B41/00B29B7/00B29C45/78
CPCF16B33/008F16B41/00B29B7/002B29C45/78B29C2945/76531
Inventor 牛永强
Owner 牛永强
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