CN102827407A - Gel composition capable of being filled in polypropylene (PP) casing and preparation method thereof - Google Patents

Abstract

The invention discloses a gel composition capable of being filled in a polypropylene (PP) casing and a preparation method thereof. The composition comprises the following components in percentage by weight: 70-90% of poly-alpha-olefin, 3-9% of PP swelling improver, 0-10% of thixotropic agent, 2-11% of viscosity modifier, 0.2-1% of antioxidant and 0.2-1% of pour-point depressant. An excellent organically-synthesized poly-alpha-olefin raw material with specific molecular weight requirement is mixed with other additives to generate the gel composition compatible with PP casings at certain temperature. The gel composition can be directly filled in a PP casing, and has wide application prospects.

Description

A kind of Vestolen PP 7052 telescopic gelatinous compsn and preparation method thereof that is filled in

Technical field

The present invention relates to a kind ofly can directly be filled in gelatinous compsn in the Vestolen PP 7052 sleeve pipe and preparation method thereof.

Background technology

Consistency is to characterize compatible ability between the material of two or more different chemical compositions.When the material of two or more different chemical compositions was in contact with one another, the physics of various materials and chemical property can not change, and it is good to be called consistency; Otherwise,, perhaps interpenetrate if chemical reaction takes place between various material each other; Thereby the physics of former material and chemical property are changed; It is incompatible then to be called both, or consistency is poor, so the sleeve pipe material of the gel component performance of filling and its filling has much relations.

The pine common working strength of shell material higher thermoplastics is like polybutylene terephthalate (PBT), nylon 12, Vestolen PP 7052 (PP), gather carbonic acid vinegar (PC) or the like.Must consider many factors when selecting loose shell material for use, like its physical strength, snappiness, contracting property, aging resistance, consistency and the processibility and the cost etc. of filled composite contacted with it.At present more cable producer adopts the PBT shell material.0.9-0.91 gram/cubic centimetre), good electrical properties and high-frequency insulation property PP (Vestolen PP 7052) is a kind of as loose shell material, has molding shrinkage low (1.0-2.5%), nontoxic, density is little (proportion:, do not receive advantages such as humidity effect.In addition aspect the cable material cost; Selecting this special shell material also is a kind of inexorable trend; Yet also do not have to reach complete and the compatible product of core pipe PP (polypropylene) material before this in the optical fiber cable ointment kind of China, cause this low-cost quality matetrial of Vestolen PP 7052 sleeve pipe not to be widely used.

Summary of the invention

Technical problem to be solved by this invention provides a kind of polyalphaolefin starting material that specified molecular weight requires that have of selecting good organic synthesis for use, and adds other additive again, generates the gelatinous compsn compatible with the Vestolen PP 7052 sleeve pipe at a certain temperature; Can directly be filled in the Vestolen PP 7052 sleeve pipe, have good application prospects.

The preparation best-of-breed technology scheme that gelatinous compsn of the present invention adopted is to be processed by following raw material and weight percentage ratio thereof:

Said each component sum is 100%.

Said polyalphaolefin is that organic synthesis has particular molecule amount synthetic oil through alhpa olefin; Require molecular weight more than 500; 100 degree viscositys are more than 40; PP swelling improving agent is the mixture of a kind of dibasic acid esters and complex ester, and thixotropic agent is the silicon-dioxide that combustion method is produced, and viscosity modifier is the mixtinite of styrene-ethylene and propylene-based block copolymer or ethylene-propylene rubber(EPR) solution or styrene-ethylene and propylene-based block copolymer and ethylene-propylene rubber(EPR) solution; Oxidation inhibitor is phenolic antioxidant, and pour point depressant is for gathering methyl-prop diluted acid ester or polyalphaolefin class.

Embodiment

Below in conjunction with specific embodiment the present invention is explained further details.

The preparation of embodiment 1 gelatinous compsn

The 87g polyalphaolefin; Be warming up to about 120 ℃, keep 2～5h, get 5g styrene-ethylene and propylene-based block copolymer and add in the polyalphaolefin; 110 ± 10 ℃ are stirred 1 ~ 2h; Treat that multipolymer and polyalphaolefin system add oxidation inhibitor, 0.5g pour point depressant and the 5g PP swelling improving agent of 0.5g after dissolving each other, stirs the thixotropic agent of adding 2g after 0.5 hour, restir vacuumizes the acquisition product after 0.5 hour.

The preparation of embodiment 2 gelatinous compsns

The 87g polyalphaolefin; Be warming up to about 120 ℃, keep 2～5h, get 4g ethylene-propylene rubber(EPR) solution and add in the polyalphaolefin; 110 ± 10 ℃ are stirred 1 ~ 2h; Treat that multipolymer and polyalphaolefin system add oxidation inhibitor, 0.5g pour point depressant and the 5g PP swelling improving agent of 0.5g after dissolving each other, stirs the thixotropic agent of adding 3g after 0.5 hour, restir vacuumizes the acquisition product after 0.5 hour.

Embodiment 3 gelatinous compsns and the test of Vestolen PP 7052 sleeve pipe compatibility performance

We carry out the test with Vestolen PP 7052 jacking consistency to the gelatinous compsn that makes, and testing sequence is following:: 1) the Vestolen PP 7052 jacking is pressed into Vestolen PP 7052 dumbbell plate [4] by GB-T1040.2) the Vestolen PP 7052 dumbbell plate is buried in gelatinous compsn, is placed on the baking oven central authorities of forced ventilation, keep 80 ± 1 ℃, 28 days.3) after finishing digestion period, sample is taken out from baking oven,, remove gelatinous compsn as far as possible, note preventing to damage sample with soft paper wiping dumbbell plate.4) at ambient temperature, with all dumbbell plate coolings.5) weight of weighing dumbbell plate sample and length.

Test-results

Polypropylene compatible property weightening finish result: the dumbbell plate sample weightening finish in 28 days that is buried in this gelatinous compsn is less than 5%.Test structure shows that the physics of the various materials of this gelatinous compsn and chemical property can not change, and is good with polypropylene compatible property, can be used for the Vestolen PP 7052 telescopic and fills.

The physicals of embodiment 4 gelatinous compsns

The RoHS environmental impact assessment test experience of embodiment 5 gelatinous compsns

Testing method is according to the requirement of the RoHS of European Union instruction 2002/95/EC and subsequent correction instruction, reference test method IEC 62321:2008, ICP-OES; IEC 62321:2008, GC-MS and IEC62321:2008, UV-Vis tests, and concrete testing process is like Fig. 1.

Conclusion: based on the test that institute's feeding sample carries out, the test result of lead, cadmium, mercury, sexavalent chrome, PBBs, polybromodiphenyl ether meets the limit value requirement that reformulates instruction 2011/65/EU appendix II of the RoHS of European Union instruction 2002/95/EC.

Above embodiment combines concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to the protection domain of inventing type.

Claims (5)

1. one kind can be filled in Vestolen PP 7052 telescopic gelatinous compsn, comprises component and weight percentage:

Said each component sum is 100%.

2. the Vestolen PP 7052 telescopic gelatinous compsn that is filled in as claimed in claim 1 is characterized in that: said polyalphaolefin is that organic synthesis has particular molecule amount synthetic oil through alhpa olefin, and molecular weight is more than 500, and 100 degree viscositys are more than 40; PP swelling improving agent is the mixture of a kind of dibasic acid esters and complex ester; Thixotropic agent is the silicon-dioxide that combustion method is produced; Viscosity modifier is the mixtinite of styrene-ethylene and propylene-based block copolymer or ethylene-propylene rubber(EPR) solution or styrene-ethylene and propylene-based block copolymer and ethylene-propylene rubber(EPR) solution; Oxidation inhibitor is phenolic antioxidant, and pour point depressant is for gathering methyl-prop diluted acid ester or polyalphaolefin class.

3. preparation method that can be filled in Vestolen PP 7052 telescopic gelatinous compsn comprises step:

A) get the polyalphaolefin that accounts for gross weight 70%-90%, be warming up to about 120 ℃, keep 2～5h;

B) get and account for gross weight 2%-11% viscosity modifier and add in the polyalphaolefin, 110 ± 10 ℃ are stirred 1 ~ 2h;

C) treat that viscosity modifier and polyalphaolefin system add the oxidation inhibitor account for gross weight 0.2%-1% after dissolving each other, account for gross weight 0.2%-1% pour point depressant and account for the PP swelling improving agent of gross weight 3%-9%, stir 0.5-1h after;

D) add the thixotropic agent that accounts for gross weight 0%-10%, vacuumize the acquisition product behind the restir 0.5-1h.

4. the preparation method who is filled in Vestolen PP 7052 telescopic gelatinous compsn as claimed in claim 3 is characterized in that, comprises step:

A) the 87g polyalphaolefin, be warming up to about 120 ℃, keep 2～5h;

B) get 5g styrene-ethylene and propylene-based block copolymer and add in the polyalphaolefin, 110 ± 10 ℃ are stirred 1 ~ 2h;

C) treat that multipolymer and polyalphaolefin system add oxidation inhibitor, 0.5g pour point depressant and the 5g PP swelling improving agent of 0.5g after dissolving each other, and stir after 0.5 hour;

D) thixotropic agent of adding 2g, restir vacuumizes the acquisition product after 0.5 hour.

5. the preparation method who is filled in Vestolen PP 7052 telescopic gelatinous compsn as claimed in claim 3 is characterized in that, comprises step:

A) the 87g polyalphaolefin, be warming up to about 120 ℃, keep 2～5h;

B) get 4g ethylene-propylene rubber(EPR) solution and add in the polyalphaolefin, 110 ± 10 ℃ are stirred 1 ~ 2h;

C) treat that multipolymer and polyalphaolefin system add oxidation inhibitor, 0.5g pour point depressant and the 5g PP swelling improving agent of 0.5g after dissolving each other, and stir after 0.5 hour;

D) thixotropic agent of adding 3g, restir vacuumizes the acquisition product after 0.5 hour.

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