CN103497499A - Nano-pottery clay-containing rubber seal ring material and preparation method thereof - Google Patents

Abstract

The invention discloses a nano-pottery clay-containing rubber seal ring material and a preparation method thereof. The material is prepared from the following raw materials: epichlorohydrin rubber, nano-pottery clay, accelerant TMTD, ferric oxide, distearoyl isopropoxy aluminate, antioxidant DLTP, modified talc powder, isocyanate and fatty alcohol-polyoxyethylene ether. The material is prepared by adopting epichlorohydrin rubber as a main material, is low in price, and has good performances of heat resistance, oil resistance and aging resistance; the modified talc powder is added in the raw materials, so that the internal binding force of the rubber seal ring can be enhanced, and the tensile strength, aging resistance, oil resistance, heat resistance, metal adhesion and mechanical performance of the rubber seal ring can be effectively improved.

Description

A kind of rubber seal loop material that contains nanometer potter's clay and preparation method thereof

Technical field

The present invention relates to a kind of sealing ring material, be specifically related to a kind of rubber seal loop material that contains nanometer potter's clay and preparation method thereof.

Background technology

Rubber has good over-all properties, with metal bonding, mechanical property, fatigue property, ageing-resistant, heat-dissipating is low etc., and performance is all higher, rubber seal is applied in all trades and professions, but it is short that current rubber seal usually runs into work-ing life, the bad problem such as heat-resisting, oil resistant, anti-ozone, tensile strength are low, people also constantly improve the specification of quality of rubber seal, in the urgent need to a kind of high performance durable rubber sealing ring material.

Summary of the invention

The object of the present invention is to provide a kind of rubber seal loop material that contains nanometer potter's clay and preparation method thereof.

The present invention adopts following technical scheme to achieve these goals:

The rubber seal loop material that contains nanometer potter's clay, the weight part of its constitutive material is: chlorohydrin rubber 110-120, nanometer potter's clay 40-45, Vulcanization accelerator TMTD 2.0-3.0, ferric oxide 0.4-0.6, sec.-propyl distearyl acyl-oxygen base Aluminate 3.8-4.2, anti-oxidant DLTP 1.6-1.8, modified talc powder 6.5-7.5, isocyanic ester 1.8-2.0 and fatty alcohol-polyoxyethylene ether 1.0-1.5.

The rubber seal loop material that contains nanometer potter's clay, the weight part of its constitutive material is: chlorohydrin rubber 115, nanometer potter's clay 42, Vulcanization accelerator TMTD 2.5, ferric oxide 0.5, sec.-propyl distearyl acyl-oxygen base Aluminate 4.0, anti-oxidant DLTP 1.7, modified talc powder 7.0, isocyanic ester 1.9 and fatty alcohol-polyoxyethylene ether 1.2.

The preparation method of the rubber seal loop material that contains nanometer potter's clay comprises the following steps:

(1) preparation of modified talc powder:

A: take talcum powder 13-18 part, Zirconium tetrafluoride 2.4-3.0 part, alum powder 2.6-3.2 part, quartz sand 3.5-5.5 part, loess 3.0-4.0 part, carry out sintering 2-3 hour after mixing, control temperature 600-700 ℃, pulverize stand-by;

B: the compound after above-mentioned steps (a) pulverizing is added in sodium hydrogen carbonate solution and soaks 3-4h, pull out, dry at 50-60 ℃ of temperature;

C: add 4.0-5.5 part Silane coupling agent KH550,3.0-4.5 part terephthalate and 1.7-2.3 part polyvinylpyrrolidone in the compound after step (b) is dried, the 1-2h that stirs, obtain;

(2) weight part by constitutive material drops in Banbury mixer by chlorohydrin rubber the 3-5 minute that plasticates, and then adds nanometer potter's clay, fatty alcohol-polyoxyethylene ether and Vulcanization accelerator TMTD, mediates 6-8 minute, and discharging is cooled to below 45 ℃ drop in mill;

(3) modified talc powder that adds by weight step (1) to prepare in the mill of step (2) and other constitutive material, mixing evenly rear thin-pass once goes out film;

(4) film of step (3) is cut into and produce required moldings, with evacuated flat panel vulcanizer heating mould, to 150-165 ℃, then the film cut out is put into to die cavity, matched moulds is vulcanized 135-155 and is taken out goods after second, removes rim charge, gets product.

Beneficial effect of the present invention:

It is major ingredient that the present invention adopts chlorohydrin rubber, cheap, there is well heat-resisting, oil resistant and ageing-resistant performance, and added modified talc powder in raw material, internal bond strength that can the Reinforced Rubber sealing-ring, effectively improve the stretch-proof of rubber seal, ageing-resistant, oil resistant, heat-resisting, metal bonding and mechanical property etc.

Embodiment

Embodiment 1: the rubber seal loop material that contains nanometer potter's clay, the weight part of its constitutive material (kg) is: chlorohydrin rubber (H45) 115, nanometer potter's clay 42, Vulcanization accelerator TMTD 2.5, ferric oxide 0.5, sec.-propyl distearyl acyl-oxygen base Aluminate 4.0, anti-oxidant DLTP 1.7, modified talc powder 7.0, isocyanic ester 1.9 and fatty alcohol-polyoxyethylene ether 1.2.

The preparation method of the rubber seal loop material that contains nanometer potter's clay comprises the following steps:

(1) preparation of modified talc powder:

A: take talcum powder 15kg, Zirconium tetrafluoride 2.7kg, alum powder 2.9kg, quartz sand 4.5kg, loess 3.5kg, carry out sintering after mixing 2 hours, control 650 ℃ of temperature, pulverize stand-by;

B: the compound after above-mentioned steps (a) pulverizing is added in sodium hydrogen carbonate solution and soaks 3.5h, pull out, dry at 55 ℃ of temperature;

C: add 4.8kg Silane coupling agent KH550,3.8kg terephthalate and 2.0kg polyvinylpyrrolidone in the compound after step (b) is dried, the 1.5h that stirs, obtain;

(2) weight part by constitutive material drops into chlorohydrin rubber in Banbury mixer and plasticates 4 minutes, then adds nanometer potter's clay, fatty alcohol-polyoxyethylene ether and Vulcanization accelerator TMTD, mediates 7 minutes, and discharging, be cooled to below 45 ℃ drop in mill;

(3) modified talc powder that adds by weight step (1) to prepare in the mill of step (2) and other constitutive material, mixing evenly rear thin-pass once goes out film;

(4) film of step (3) is cut into and produce required moldings, with evacuated flat panel vulcanizer heating mould to 158 ℃, then the film cut out is put into to die cavity, matched moulds was vulcanized after 145 seconds takes out goods, removes rim charge, gets product.

The Performance Detection of the rubber seal made by embodiment 1 is as follows:

1, life-time service under 210 ℃ of temperature condition, 100 ℃ * 70h compression set is below 9.8%; 2, hardness (A) 55; 3, tensile strength (Mpa) 14.6; 4; Anti-ozone (40 ± 1) ℃ * (50 ± 5) PPhm * 20% stretching * 500h is without be full of cracks.

Claims (3)

1. a rubber seal loop material that contains nanometer potter's clay, is characterized in that the weight part of its constitutive material is: chlorohydrin rubber 110-120, nanometer potter's clay 40-45, Vulcanization accelerator TMTD 2.0-3.0, ferric oxide 0.4-0.6, sec.-propyl distearyl acyl-oxygen base Aluminate 3.8-4.2, anti-oxidant DLTP 1.6-1.8, modified talc powder 6.5-7.5, isocyanic ester 1.8-2.0 and fatty alcohol-polyoxyethylene ether 1.0-1.5.

2. the rubber seal loop material that contains nanometer potter's clay according to claim 1, is characterized in that the weight part of its constitutive material is: chlorohydrin rubber 115, nanometer potter's clay 42, Vulcanization accelerator TMTD 2.5, ferric oxide 0.5, sec.-propyl distearyl acyl-oxygen base Aluminate 4.0, anti-oxidant DLTP 1.7, modified talc powder 7.0, isocyanic ester 1.9 and fatty alcohol-polyoxyethylene ether 1.2.

3. the preparation method of a rubber seal loop material that contains nanometer potter's clay as claimed in claim 1 is characterized in that comprising the following steps:

(1) preparation of modified talc powder:

A: take talcum powder 13-18 part, Zirconium tetrafluoride 2.4-3.0 part, alum powder 2.6-3.2 part, quartz sand 3.5-5.5 part, loess 3.0-4.0 part, carry out sintering 2-3 hour after mixing, control temperature 600-700 ℃, pulverize stand-by;

B: the compound after above-mentioned steps (a) pulverizing is added in sodium hydrogen carbonate solution and soaks 3-4h, pull out, dry at 50-60 ℃ of temperature;

C: add 4.0-5.5 part Silane coupling agent KH550,3.0-4.5 part terephthalate and 1.7-2.3 part polyvinylpyrrolidone in the compound after step (b) is dried, the 1-2h that stirs, obtain;

(2) weight part by constitutive material drops in Banbury mixer by chlorohydrin rubber the 3-5 minute that plasticates, and then adds nanometer potter's clay, fatty alcohol-polyoxyethylene ether and Vulcanization accelerator TMTD, mediates 6-8 minute, and discharging is cooled to below 45 ℃ drop in mill;

(3) modified talc powder that adds by weight step (1) to prepare in the mill of step (2) and other constitutive material, mixing evenly rear thin-pass once goes out film;

(4) film of step (3) is cut into and produce required moldings, with evacuated flat panel vulcanizer heating mould, to 150-165 ℃, then the film cut out is put into to die cavity, matched moulds is vulcanized 135-155 and is taken out goods after second, removes rim charge, gets product.