Adhesive composition for repairing bone cultural relics

A technology of bone cultural relics and adhesives, applied in the directions of inorganic adhesives, polymer adhesive additives, adhesives, etc. No organic volatiles effect

Pending Publication Date: 2018-06-29
NANJING MUSEUM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In summary, if the inherent components of cultural relics are developed into cultural relics protection materials, it can avoid some defects that other materials are difficult to solve, and has unique development prospects. However, the single use of hydroxyapatite cannot play a reinforcing role due to its low strength. , so it is necessary to improve

Method used

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  • Adhesive composition for repairing bone cultural relics
  • Adhesive composition for repairing bone cultural relics
  • Adhesive composition for repairing bone cultural relics

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] (1) The preparation method of phosphate curing agent:

[0037] Raw material particle size requirements: Taking calcium hydroxyphosphate as an example, self-made materials or commercially available nanomaterials smaller than 50nm can be selected, and anhydrous ethanol can be selected as the medium, which can be ground in a planetary mill to a fineness of less than 10 μm, and then dried at 100°C . Especially for TCP, TTCP, MCPM, and DCPA, it is relatively more preferable to grind with alcohols to less than 10 μm and then dry.

[0038] When mixing two or more calcium phosphate salts, the following steps can be followed: weigh each component material in proportion and put them into agate ball tanks, add an appropriate amount of absolute ethanol, and grind and mix in a horizontal planetary ball mill , 300 rev / min, mix for 4 hours, take out and dry at 80°C.

[0039] For component B of the present invention, specifically, the toughening adhesive can be selected from collagen...

Embodiment 1

[0065] (1) Calcium hydrogen phosphate anhydrous (DCPA)

[0066] Dibasic calcium phosphate dihydrate (DCPD) was finely ground by hand in a mortar, the powder was passed through a 180-mesh standard sieve, placed in an electric blast drying oven at 120°C for 12 hours, and after cooling, it was loaded into agate with absolute ethanol as the medium In a spherical tank, grind in a horizontal planetary ball mill for about 8 hours, dry again to obtain anhydrous calcium hydrogen phosphate (DCPA) powder (particle size is less than 10 μm), pack it into a bag and seal it for later use.

[0067] (2) Tetracalcium phosphate: place tetracalcium phosphate (TTCP) in a mortar and quickly grind it through a 180-mesh sieve, and use absolute ethanol as the medium to grind the ground powder for about 24 hours in a horizontal planetary ball mill, then bake Dry to obtain superfine tetracalcium phosphate powder (particle size less than 10 μm), which is packed into bags and sealed for later use.

[0068]...

Embodiment 2

[0079] (1) Prepare curing agent A, toughening adhesive B and accelerator C according to the steps of Example 1 (1) to (6).

[0080] (2) Preparation of bonding reinforcement material for bone cultural relics: Dissolve 4 grams of Accelerator C in 16 grams of distilled water, then add 20 grams of 40% silicone acrylic aqueous emulsion and mix well. Take 100 grams of curing agent A in a stainless steel round-bottomed pot, add the above mixed solution in 2 to 3 times under the condition of stirring, and mix well to obtain the bonding strengthening agent called in the present invention. Its effective composition is as follows:

[0081]

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Abstract

The invention discloses an adhesive composition for repairing bone cultural relics. The adhesive composition is prepared from a component A, a component B, a component C and water, which are mixed ina utilization process, wherein the component A is a calcium phosphate curing agent; the component B is a toughening adhesive; the component C is a phosphate accelerant; when the adhesive composition is prepared, the ratio of each component is as follows in parts by weight: 100 parts of the component A, 4 to 8 parts of the component B, 2 to 4 parts of the component C and 30 to 36 parts of the water. The components are mixed and uniformly blended according to the ratio to obtain paste with certain thickness; the adhesive composition has a good adhering and reinforcing effect on the fragile and broken bone cultural relics; a main curing substance is hydroxy calcium phosphate which is the same as a main component of the bone cultural relics, so that the disadvantages that a previous organic high molecular polymer curing agent is easy to age, has poor compatibility with bone cultural relic bodies and the like are overcome; the requirements on cultural relic protection are met.

Description

technical field [0001] The invention relates to an adhesive material, in particular to an adhesive composition for restoration of bone cultural relics. The adhesive composition can be widely used in the restoration of bone cultural relics in the field of cultural relic protection and restoration. Background technique [0002] With the continuous development of technology, human bones, various animal bones and bone tools unearthed and collected in archaeology are important physical evidence for studying the history of human development and the development of nature, and have extremely high research value. Bone cultural relics have been affected by their own composition, natural environment and human factors for a long time, and microbial degradation and chemical degradation will inevitably occur. With the loss of organic matter and gradual changes in the structure of inorganic matter, the interior of the bone becomes increasingly empty and fragile, which in turn leads to cra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J1/00C09J11/08
CPCC09J1/00C09J11/08
Inventor 郑冬青陈步荣万俐张玉芝云悦何子晨
Owner NANJING MUSEUM
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