CN1038825A - Extraction of functional materials of guttapercha type - Google Patents

Abstract

The present invention system utilizes the distinctive economic forest resource of China, the gum-type extract of gutta-percha tree is the feedstock production new function material, it is according to the characteristics of the room temperature hardening and the reversible deformation of being heated of this natural gum, is prepared into a kind of novel thermal control material, medical splint and prosthetic material; (stretching  recovers according to polynary strain  restore funcitons, compression  recovers, crooked (curling)  recovers, fold the  recovery, distortion  recovers, and cuts oblique  and recovers to reach deformation  recovery at random etc.) can make sealing material, material is connected and fixed, articles for children, magic and art ware, and the military security goods etc.

Description

Extraction of functional materials of guttapercha type

The invention belongs to the development and use of natural macromolecular material, is to be that raw material adopts correlation method with the guttapercha extract, develops the series function material.

Before this patent invention, two periods have been experienced in the development and use of guttapercha.The one, this century the '30s, the exploitation of the guttapercha that the Soviet Union carries out, be since at that time capitalist country block and need develop this class material voluntarily, as the plastics surrogate, as undersea cable, insulated product golf ball, tackiness agent etc., (" horse Lay natural gum " nineteen fifty-five is published the 10-11 page or leaf).It is the fifties thereafter, China begins to set up big area bark of eucommia afforestation, and carried out proposing the small-scale exploitation of glue simultaneously, its purpose also is that attempt is used for undersea cable, the tackiness agent and the glue properties-correcting agent etc. that mixes, (" construction of bark of eucommia woods and the utilization of gutta-percha tree " nineteen fifty-nine is published the 101-102 page or leaf), but the development and use of above-mentioned gutta-percha are all owing to costing an arm and a leg and being of limited application, can not get development, make the exploitation of once rising become to declining again.

Gutta-percha research group of the Chinese Academy of Sciences, owing to carrying on the gluing method to changing more economically, suitableization aspect makes progress (Chinese patent 86100216) and simultaneously the waste residue liquid of carrying behind the glue is fully utilized, new development has been arranged obtaining on the overall economic efficiency, thereby stimulated the application and development of guttapercha in wider scope.Because gutta-percha tree is the peculiar economic forest of China, can generally plant at China's wide geographic area, the grain of getting along well is again striven ground can be in the mountain area, the hilly country growth, it is much more extensive than natural rubber to fit kind of scope, and its skin contains abundant resinoid in leaf and the seed, its unique properties can be developed the functional materials as special purpose.Break through as on using, obtaining from now on, then can bring great economic results in society.

The invention belongs to the polymer-function material field.

Basic fundamental of the present invention is conceived and content is, utilizes the crystallizing at room temperature of guttapercha and contains the diene feature, it is processed, to obtain multi-purpose material, especially various functional materialss.The present invention is based on research experiment, the formula system of forming for the feature material with the guttapercha has been proposed, they can produce sensitive and hot reversible deformation effect significantly to be processed into thermal control material, for example in the distortion that specified shape takes place more than 50 ℃, and hardening has at normal temperatures made novel temperature controlled switch (seeing another patent 88207365.6) first with this material; Being suitable under surgical clinical operation and the room temperature good rigidity according to the softening temperature utmost point can be made into for gypsum with medical splint and artificial limb cover; Can be made into special-shaped caliber adapter, seal washer, the military articles for use that toy for children magic and art ware and confidentiality are fascinating strong etc. according to thermoresilient and deformability.

With the guttapercha is the functional materials prescription of feature:

100 parts of guttaperchas

Sulphur≤4 part

Sulfur containing promoter≤3 part

ZnO≤3 part

Band look filler≤40 parts

Anti-aging agent≤3 part

Increase hard packing≤40 part

Toughness reinforcing rubber≤80 part

Sulfur containing promoter is CZ in the above-mentioned prescription, and M, DM, TMTD etc., anti-aging agent are anti-ageing, anti-old fourth etc., and increasing hard packing is silicon-dioxide etc., and toughner is polyethylene, using trans-polyisoprene, oxidic polyethylene etc.

With above-mentioned system common plastics processing with two rollers on behind the mixing, be heated to 150 ℃ of extrusion formings, make strip or club-shaped material, can make thermal control material, it and indicator elment and reposition element combination can form temperature controlled switch, and gutta-percha temperature controlled switch temperature control scope is at 35 ℃-50 ℃.This polymer thermal control material is a kind of new breakthrough of polymer Application Areas, is a kind of novel temperature control mode, than mercury temperature control element reliable (latter is frangible, is difficult for handling); With metal thermal control material ratio,, can not cause flase operation owing to getting rusty as in water, using.

Adopt similar system with suitably being machined to form sheet material or tube material, requirement further is processed into specified shape and is can be made into for gypsum with clamping plate or artificial limb cover when using according to medical treatment again.When making clamping plate, as long as in advance according to patient position shape, cut a certain size offset plate, macerate in 50-60 ℃ of water earlier, wrap in patient's operative site again, cold back hardening promptly plays fixed action; Only need to be enclosed within on the deformed limb slightly to cylindrical material when making artificial limb heating can be fitted the material deliquescing well with deformed limb, promptly gets the fine artificial limb cover of rigidity after cold.This material characteristics: when making clamping plate, this plaster splint is convenient, clean, and patient's operative site feels comfortable; It is more convenient to do artificial limb when cover, molding repeatedly, repairs a die, and once shaped gets final product, and this will be the fabulous natural medical material of a class undoubtedly.

If this material: place the moulding of required mould heating and pressurizing, can obtain the material of specified shape, this material is using, deposit, can experience any basic stress in the transportation (as stretching, compression, crooked, shear), or composite force at random and being out of shape, after being heated, can get back to original form again, this class distortion of materials ← → shape restore funcitons form has: stretch (or expansion) ← → recover, compression (pressing) ← → recover, folding ← → recover, curl (or crooked) ← → recover, distortion ← → recover, cut tiltedly ← → various ways such as recovery.As can making the material that is connected and fixed of two different tube diameters pipes according to (expansion) power that stretches, according to flatten ← → recovery can make the seal washer material; According to random deformation ← → recover to make toy for children magic goods, art ware and confidentiality disguise, fascinating strong military articles for use etc.It will be the extremely strong material of a class vitality undoubtedly.

Embodiment 1:

Prescription: 100 parts of guttaperchas

Sulphur 1-2 part

1 part of sulfur containing promoter M

1 part of ZnO

10 parts of band look fillers

80 parts in toughness reinforcing glue (polyethylene or trans-polyisoprene or oxidic polyethylene)

Increase 10 parts of hard packings (silicon-dioxide)

With above-mentioned prescription mixing on twin-roll machine, heating and pressurizing into strips or bar-shaped promptly can be made into temperature control element on press.

Embodiment 2:

Prescription: 100 parts of gutta-percha

0.5 part in sulphur

0.15 part of sulfur containing promoter (CZ)

0.15 part of ZnO

15 parts of band look fillers

1.5 parts in toughness reinforcing glue (oxidic polyethylene)

Increase 15 parts of hard packings (silicon-dioxide)

With above prescription mixing on twin-roll machine, on press, add and be hot pressed into sheet material (or being extruded into a material) and can be processed into for gypsum standby with clamping plate or artificial limb cover material.

Embodiment 3:

Prescription: 100 parts of guttaperchas

Sulphur 1-1.5 part

1 part of sulfur containing promoter DM

1 part of ZnO

Band look filler 5-10 part

5 parts of toughness reinforcing glue using trans-polyisoprenes

Increase hard packing sio ₂5-10 part

With above prescription mixing on twin-roll machine, heating and pressurizing moulding in the mould of needs again; Can make special-shaped caliber pipe link material according to the difference of model, seal washer, toy for children, magic and art ware, and military articles for use.

The manufacturing material principle (see figure 1) that is connected and fixed: the guttapercha prescription is processed into pipe shape (among Fig. 1 1), its internal diameter is than two different tube diameters tube outer diameter that need to connect little (among Fig. 12,3), as managing 1 heating, its meeting deliquescing, impose expansionary force, then its caliber can become greater than pipe 2, reaches 3, at this moment can freely be enclosed within on the pipe 2,3, if under heating, external force is removed, pipe 1 can shrink, be enclosed within on pipe 2 and 3 again tightly, manage 1 meeting hardening after cooling, can work the effect of being connected and fixed managing 2,3.(seeing constitutional diagram 2); If in like manner be processed into garden circle, then according to flatten ← → recover principle to make seal washer; Can according to random deformation ← → recover principle, can make toy for children, magic and art ware and military security articles for use.

Claims (5)

1, a kind of polymer-function material, it is characterized in that with the guttapercha being the compositing formula and the method for making of main raw material, its base stock formulation is 100 parts of guttaperchas, sulphur 0.5-4 part, sulfur containing promoter 0.5-3 part, zinc oxide 0.5-3 part, band look filler 5-20 part, anti-aging agent 1-3 part, toughness reinforcing glue 5-80 part, increase hard packing 5-30 part, its processing method for making is that the raw material that this prescription is formed is mixed on common plastics is processed with twin-roll machine, and being heated to softening temperature and extrusion forming again on extrusion machine is strip or bar-shaped, template, cartridge type, sealing is filled out circle and can be carried out the Chinese gutta percha class functional materials that thermal deformation is handled at random.

2, polymer-function material as claimed in claim 1 is characterized in that said sulfur containing promoter is ... CZ, DM, M, TM TD etc., anti-aging agent is ... anti-ageing, anti-old D etc., toughness reinforcing glue is polyethylene, trans isoprene and oxidic polyethylene, increasing hard packing is silicon-dioxide.

3, as claim 1,2 described polymer-function materials, the optimum feed stock compositing formula that it is characterized in that producing the bar-shaped thermal control material of bar is 100 parts of gutta-percha, sulphur 1-2 part, sulfur containing promoter 0.5-1 part, zinc oxide 0.5-1 part, band toner 5-10 part, 50 parts of toughness reinforcing jellies, increase hard packing 5-10 part, anti-aging agent 1-2 part, the raw material of this prescription is mixed on twin-roll machine, again on extrusion machine according to the moulding of desired shape heating and pressurizing.

4, as right 1,2 described polymer-function materials, it is characterized in that the optimum feed stock compositing formula of making medical template or cartridge type prosthetic material is: 100 parts of guttaperchas, 0.5 part in sulphur, 0.5 part of sulfur containing promoter, 0.5 part in zinc oxide, 10 parts of band look fillers, 15 parts in toughness reinforcing glue, increase 15 parts of hard packings, anti-aging agent 1-2 part, the raw material that this prescription is formed mixes heating and pressurizing moulding on extrusion machine again on twin-roll machine.

5, as claim 1,2 described polymer-function materials, it is characterized in that making the reversible shape-changing material of hot deepfreeze, comprise stretching (or expansion) ← → recover, compression (pressing) ← → recover, folding ← → recover, curl (or crooked) ← → recover, distortion ← → recover, cut tiltedly ← → recover the broad variety shape-changing material, for example make the special-shaped pipe material that is fixedly connected, seal washer, the optimum feed stock compositing formula of shape conversion toy for children and magic art product and the secret articles for use of military camouflage deformation is: 100 parts of gutta-percha, sulphur 1-2 part, sulfur containing promoter 0.5-1 part, zinc oxide 0.5-1 part, band look filler 5-10 part, 5 parts in toughness reinforcing glue, increase hard packing 5-10 part, anti-aging agent 1-2 part, the raw material of this prescription is mixed on twin-roll machine, again by the extrusion forming of heating of required model or shape.

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