CN102492252A

CN102492252A - Thermoplastic soft rubber

Info

Publication number: CN102492252A
Application number: CN2011104062380A
Authority: CN
Inventors: 金海平
Original assignee: NINGBO KINGS INDUSTRIAL Co Ltd
Current assignee: NINGBO KINGS INDUSTRIAL Co Ltd
Priority date: 2011-12-08
Filing date: 2011-12-08
Publication date: 2012-06-13
Anticipated expiration: 2031-12-08
Also published as: CN102492252B

Abstract

The invention discloses thermoplastic soft rubber, which is generally injection-molded on a lead hole of a junction box. The thermoplastic soft rubber consists of the following components in percentage by mass: 0.2 percent of white oil, 28.3 percent of talc powder, 6.5 percent of diantimony trioxide, 9.6 percent of decabromine, 51.5 percent of SBS (Styrene Butadiene Styrene), 3.6 percent of PP (Polypropylene), 0.1 percent of an antioxidant 168 and 0.2 percent of an antioxidant AT-10. The thermoplastic soft rubber disclosed by the invention has the advantages of high flame retardance, high bonding property, low elongation percentage, high hardness, high antioxidant ability and difficulty in aging.

Description

A kind of thermoplasticity soft rubber

Technical field:

The present invention relates to a kind of thermoplasticity soft rubber, specifically is a kind of thermoplasticity soft rubber that is used to be injection-moulded on the terminal box wire guide.

Background technology:

As everyone knows; Terminal box is installed on the wall of buildings usually; Main plaing a part connects various leads, generally all offers the wire guide that a plurality of confession leads penetrate the terminal box inner chamber on its sidewall, before wire guide is not worn lead; Usually can fill in a waterproof chock plug or direct injection moulding one deck thermoplasticity soft rubber on wire guide on the wire guide, lead can directly pass waterproof chock plug or thermoplasticity soft rubber and enters in the terminal box during use.Prior art thermoplasticity soft rubber generally includes 19.3% lime carbonate, 0.2% white oil, 1.3% talcum powder, 10% Antimony Trioxide: 99.5Min, 15.3% ten bromine, 51%SBS (styrene-butadiene-styrene block copolymer), 2.6%PP, 0.3% oxidation inhibitor.There is following shortcoming in this thermoplasticity soft rubber: 1, poor fire, and, temperature will burn when being elevated to 650 ℃; 2, binding property is bad, comes off from terminal box easily; 3, unit elongation is high, and hardness is low, is not easy to be worn out by lead; 4, resistance of oxidation is poor, easy ageing.

Summary of the invention:

The technical problem that the present invention will solve is, provides that a kind of flame retardant resistance is strong, binding property good, unit elongation is low, hardness is high, resistance of oxidation is strong, is difficult for aged thermoplasticity soft rubber.

For solving the problems of the technologies described above, the present invention provides a kind of thermoplasticity soft rubber: it is that 0.18～0.22% white oil, 27～30% talcum powder, 6～7% Antimony Trioxide: 99.5Mins, 9～1,0%0 bromine, 51.2～51.7%SBS, 3～4%PP, 0.09～0.11% oxidation inhibitor 168 and 0.19～0.21% oxidation inhibitor AT-10 form by mass percent.

A kind of thermoplasticity soft rubber of the present invention, wherein, the mass percent of white oil can be 0.2%; Talcous mass percent can be 28.3%, and the mass percent that the mass percent of Antimony Trioxide: 99.5Min can be 6.5%, ten bromine can be 9.6%; The mass percent of SBS can be 51.5%; The mass percent of PP can be 3.6%, and the mass percent of oxidation inhibitor 168 can be 0.1%, and the mass percent of oxidation inhibitor AT-10 can be 0.2%.

A kind of thermoplasticity soft rubber of the present invention, wherein, the mass percent of white oil can be 0.22%; Talcous mass percent can be 29.76%, and the mass percent that the mass percent of Antimony Trioxide: 99.5Min can be 6%, ten bromine can be 9%; The mass percent of SBS can be 51.7%; The mass percent of PP can be 3%, and the mass percent of oxidation inhibitor 168 can be 0.11%, and the mass percent of oxidation inhibitor AT-10 can be 0.21%.

A kind of thermoplasticity soft rubber of the present invention, wherein, the mass percent of white oil can be 0.18%; Talcous mass percent can be 27.34%, and the mass percent that the mass percent of Antimony Trioxide: 99.5Min can be 7%, ten bromine can be 10%; The mass percent of SBS can be 51.2%; The mass percent of PP can be 4%, and the mass percent of oxidation inhibitor 168 can be 0.09%, and the mass percent of oxidation inhibitor AT-10 can be 0.19%.

A kind of thermoplasticity soft rubber of the present invention has the following advantages:

1, flame retardant resistance is strong: in a kind of thermoplasticity soft rubber of the present invention; Though two kinds of shared ratios of fire retardant material of Antimony Trioxide: 99.5Min and ten bromines reduce to some extent; But the minimizing of these two kinds of fire retardant material ratios does not only reduce its flame retardant effect; Because of its ratio is tending towards rationally more, make a kind of thermoplasticity soft rubber of the present invention flame retardant properties that bigger lifting arranged on the contrary, make its flame retardant properties can reach 960 ℃ of glowing filaments;

2, binding property is good: a kind of thermoplasticity soft rubber of the present invention has been cancelled lime carbonate and has been increased talcous ratio; Also suitably adjusted simultaneously the ratio of PP; Because of talcum powder has the particulate advantage littler than lime carbonate; Easier and other batchings better merge, and also make the fusion rate of PP and SBS higher more even, and making in the process of injection molding of the present invention on the terminal box wire guide under equal conditions has more more uniform molecular ruptures to merge with reorganization with the PP material; It is bonding to form the true property that more approaches the molecule fusion, thereby obtains the high-quality soft rubber product of high viscous force;

3, unit elongation is low, hardness is high: because talcum powder has the particulate advantage littler than lime carbonate, when suitably increasing raw material PP, well each starting material are stirred, thereby when reducing the SBS high-elongation, increase its hardness too;

4, resistance of oxidation is strong; Be difficult for aging: because oxidation inhibitor 168 is a kind of chemical assistant that can suppress and delay polymer materials oxidation and degraded with oxidation inhibitor AT-10; Therefore; Under each raw material merged more uniformly situation, a kind of thermoplasticity soft rubber of the present invention was more remarkable on anti-oxidant, aging, anti-ultraviolet function.

Specific embodiment:

Below in conjunction with specific embodiment a kind of thermoplasticity soft rubber of the present invention is done further explain:

Embodiment 1

A kind of thermoplasticity soft rubber of the present invention is made up of white oil, talcum powder, Antimony Trioxide: 99.5Min, ten bromines, SBS, PP, oxidation inhibitor 168 and oxidation inhibitor AT-10; The mass percent of white oil is 0.2%; Talcous mass percent is 28.3%, and the mass percent of Antimony Trioxide: 99.5Min is that the mass percent of 6.5%, ten bromine is 9.6%; The mass percent of SBS is 51.5%; The mass percent of PP is 3.6%, and the mass percent of oxidation inhibitor 168 is 0.1%, and the mass percent of oxidation inhibitor AT-10 is 0.2%.

Embodiment 2

A kind of thermoplasticity soft rubber of the present invention is made up of white oil, talcum powder, Antimony Trioxide: 99.5Min, ten bromines, SBS, PP, oxidation inhibitor 168 and oxidation inhibitor AT-10; The mass percent of white oil is 0.22%; Talcous mass percent is 29.76%, and the mass percent of Antimony Trioxide: 99.5Min is that the mass percent of 6%, ten bromine is 9%; The mass percent of SBS is 51.7%; The mass percent of PP is 3%, and the mass percent of oxidation inhibitor 168 is 0.11%, and the mass percent of oxidation inhibitor AT-10 is 0.21%.

Embodiment 3

A kind of thermoplasticity soft rubber of the present invention is made up of white oil, talcum powder, Antimony Trioxide: 99.5Min, ten bromines, SBS, PP, oxidation inhibitor 168 and oxidation inhibitor AT-10; The mass percent of white oil is 0.18%; Talcous mass percent is 27.34%, and the mass percent of Antimony Trioxide: 99.5Min is that the mass percent of 7%, ten bromine is 10%; The mass percent of SBS is 51.2%; The mass percent of PP is 4%, and the mass percent of oxidation inhibitor 168 is 0.09%, and the mass percent of oxidation inhibitor AT-10 is 0.19%.

The making method of a kind of thermoplasticity soft rubber of the present invention is: put into plastic mixer after white oil, talcum powder, Antimony Trioxide: 99.5Min, ten bromines, SBS, PP, oxidation inhibitor 168 and oxidation inhibitor AT-10 are prepared by the mass percent among above-mentioned each embodiment and be stirred to evenly; And then the white oil behind the uniform mixing, talcum powder, Antimony Trioxide: 99.5Min, ten bromines, SBS, PP, oxidation inhibitor 168 and oxidation inhibitor AT-10 are put into screw extrusion press extrude particulate state; At last by the injection moulding machine fusing and be injected on the wire guide of terminal box, thereby form one deck thermoplasticity soft rubber.

PP Chinese described in the foregoing description is: Vestolen PP 7052, described oxidation inhibitor 168 is produced by Shanghai Jinhaiyabao Precision Chemical Co., Ltd. with oxidation inhibitor AT-10.

Through detecting, a kind of thermoplasticity soft rubber of the present invention performance is as shown in the table:

Above-described embodiment describes preferred implementation of the present invention; Be not that scope of the present invention is limited; Design under the prerequisite of spirit not breaking away from the present invention; The various improvement that those of ordinary skills make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.

Claims

1. thermoplasticity soft rubber, it is characterized in that: it is that 0.18～0.22% white oil, 27～30% talcum powder, 6～7% Antimony Trioxide: 99.5Mins, 9～1,0%0 bromine, 51.2～51.7%SBS, 3～4%PP, 0.09～0.11% oxidation inhibitor 168 and 0.19～0.21% oxidation inhibitor AT-10 form by mass percent.

2. a kind of thermoplasticity soft rubber according to claim 1 is characterized in that: the mass percent of said white oil is 0.2%, and said talcous mass percent is 28.3%; The mass percent of said Antimony Trioxide: 99.5Min is 6.5%; The mass percent of said ten bromines is 9.6%, and the mass percent of said SBS is 51.5%, and the mass percent of said PP is 3.6%; The mass percent of said oxidation inhibitor 168 is 0.1%, and the mass percent of said oxidation inhibitor AT-10 is 0.2%.

3. a kind of thermoplasticity soft rubber according to claim 1 is characterized in that: the mass percent of said white oil is 0.22%, and said talcous mass percent is 29.76%; The mass percent of said Antimony Trioxide: 99.5Min is 6%; The mass percent of said ten bromines is 9%, and the mass percent of said SBS is 51.7%, and the mass percent of said PP is 3%; The mass percent of said oxidation inhibitor 168 is 0.11%, and the mass percent of said oxidation inhibitor AT-10 is 0.21%.

4. a kind of thermoplasticity soft rubber according to claim 1 is characterized in that: the mass percent of said white oil is 0.18%, and said talcous mass percent is 27.34%; The mass percent of said Antimony Trioxide: 99.5Min is 7%; The mass percent of said ten bromines is 10%, and the mass percent of said SBS is 51.2%, and the mass percent of said PP is 4%; The mass percent of said oxidation inhibitor 168 is 0.09%, and the mass percent of said oxidation inhibitor AT-10 is 0.19%.