CN103497470A - Nano-attapulgite-containing rubber seal ring material and preparation method thereof - Google Patents

Abstract

The invention discloses a nano-attagulgite-containing rubber seal ring material and a preparation method thereof. The material is prepared from the following raw materials: acrylate rubber, nano-attagulgite, anti-aging agent OD, accelerant PZ, N-(beta-aminoethyl)-gamma-aminopropyl trimethoxy (triethoxy) silane, bi(2,2,4-trimethyl-1,3-pentanediolmono(2-methylpropanoate)), modified white carbon black, insoluble sulfur and diffusant NNO. The rubber seal ring material is prepared by adopting acrylic rubber as a main material, is low in price, and has excellent performances of heat resistance, aging resistance, oil resistance, ozone resistance and ultraviolet resistance; the modified white carbon black is added into the raw materials, so that the internal binding force of the rubber seal ring can be enhanced, and the performances of the rubber seal ring, such as tensile strength, heat resistance, aging resistance, ozone resistance and the like, can be effectively improved.

Description

A kind of rubber seal loop material that contains nano-attapulgite 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 nano-attapulgite 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 nano-attapulgite and preparation method thereof.

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

The rubber seal loop material that contains nano-attapulgite, the weight part of its constitutive material is: acrylic elastomer 90-110, nano-attapulgite 27-33, anti-aging agent OD 4.0-5.0, promotor PZ 0.7-0.9, N-(β mono-aminoethyl)-γ-aminopropyl front three (second) TMOS 3.8-4.5, two Lauryl Alcohol ester 2.3-2.8, modified white carbon black 6.0-7.5, insoluble sulfur 1.2-1.4 and dispersing agent NNO 1.4-1.8.

The rubber seal loop material that contains nano-attapulgite, the weight part of its constitutive material is: acrylic elastomer 100, nano-attapulgite 30, anti-aging agent OD 4.5, promotor PZ 0.8, N-(β mono-aminoethyl)-γ-aminopropyl front three (second) TMOS 4.2, two Lauryl Alcohol ester 2.5, modified white carbon black 6.8, insoluble sulfur 1.3 and dispersing agent NNO 1.6.

The preparation method of the rubber seal loop material that contains nano-attapulgite comprises the following steps:

(1) preparation of modified white carbon black:

A: take white carbon black 6-10 part, tripoly phosphate sodium STPP 2.2-2.6 part, aluminium nitride 2.7-3.3 part, sepiolite powder 1.0-1.5 part, loess 4.0-5.5 part, carry out sintering 3-4 hour after mixing, control temperature 630-680 ℃, 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 60-65 ℃ of temperature;

C: add 4.0-5.0 part Silane coupling agent KH550,1.8-2.5 part terephthalate and 1.9-2.3 part tripoly phosphate sodium STPP in the compound after step (b) is dried, the 1.5-2.0h that stirs, obtain;

(2) weight part by constitutive material drops in Banbury mixer by acrylic elastomer the 3-4 minute that plasticates, and then adds nano-attapulgite, dispersing agent NNO and anti-aging agent OD, mediates 7-9 minute, and discharging is cooled to below 30 ℃ drop in mill;

(3) modified white carbon black 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 160-180 ℃, then the film cut out is put into to die cavity, matched moulds is vulcanized 110-120 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 acrylic elastomer, cheap, there is excellent heat-resisting, ageing-resistant, oil resistant, anti-ozone, anti-ultraviolet property, and added modified white carbon black in raw material, internal bond strength that can the Reinforced Rubber sealing-ring, effectively improve the stretch-proof of rubber seal, heat-resisting, ageing-resistant and ozone resistance etc.

Embodiment

Embodiment 1: the rubber seal loop material that contains nano-attapulgite, the weight part of its constitutive material (kg) is: acrylic elastomer (Japanese auspicious father-in-law AR31) 100, nano-attapulgite 30, anti-aging agent OD 4.5, promotor PZ 0.8, N-(β mono-aminoethyl)-γ-aminopropyl front three (second) TMOS 4.2, two Lauryl Alcohol ester 2.5, modified white carbon black 6.8, insoluble sulfur 1.3 and dispersing agent NNO 1.6.

The preparation method of the rubber seal loop material that contains nano-attapulgite comprises the following steps:

(1) preparation of modified white carbon black:

A: take white carbon black 8kg, tripoly phosphate sodium STPP 2.4kg, aluminium nitride 3.0kg, sepiolite powder 1.2kg, loess 4.8kg, carry out sintering after mixing 4 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 62 ℃ of temperature;

C: add 4.5kg Silane coupling agent KH550,2.2kg terephthalate and 2.1kg tripoly phosphate sodium STPP in the compound after step (b) is dried, the 1.8h that stirs, obtain;

(2) weight part by constitutive material drops into acrylic elastomer in Banbury mixer and plasticates 3.5 minutes, then adds nano-attapulgite, dispersing agent NNO and anti-aging agent OD, mediates 8 minutes, and discharging, be cooled to below 30 ℃ drop in mill;

(3) modified white carbon black 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 170 ℃, then the film cut out is put into to die cavity, matched moulds was vulcanized after 115 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 205 ℃ of temperature condition, 100 ℃ * 70h compression set is below 9.2%; 2, hardness (A) 56; 3, tensile strength (Mpa) 13.8; 4; Anti-ozone (40 ± 1) ℃ * (50 ± 5) PPhm * 20% stretching * 600h is without be full of cracks.

Claims (3)

1. a rubber seal loop material that contains nano-attapulgite, is characterized in that the weight part of its constitutive material is: acrylic elastomer 90-110, nano-attapulgite 27-33, anti-aging agent OD 4.0-5.0, promotor PZ 0.7-0.9, N-(β mono-aminoethyl)-γ-aminopropyl front three (second) TMOS 3.8-4.5, two Lauryl Alcohol ester 2.3-2.8, modified white carbon black 6.0-7.5, insoluble sulfur 1.2-1.4 and dispersing agent NNO 1.4-1.8.

2. the rubber seal loop material that contains nano-attapulgite according to claim 1, is characterized in that the weight part of its constitutive material is: acrylic elastomer 100, nano-attapulgite 30, anti-aging agent OD 4.5, promotor PZ 0.8, N-(β mono-aminoethyl)-γ-aminopropyl front three (second) TMOS 4.2, two Lauryl Alcohol ester 2.5, modified white carbon black 6.8, insoluble sulfur 1.3 and dispersing agent NNO 1.6.

3. the preparation method of a rubber seal loop material that contains nano-attapulgite as claimed in claim 1 is characterized in that comprising the following steps:

(1) preparation of modified white carbon black:

A: take white carbon black 6-10 part, tripoly phosphate sodium STPP 2.2-2.6 part, aluminium nitride 2.7-3.3 part, sepiolite powder 1.0-1.5 part, loess 4.0-5.5 part, carry out sintering 3-4 hour after mixing, control temperature 630-680 ℃, 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 60-65 ℃ of temperature;

C: add 4.0-5.0 part Silane coupling agent KH550,1.8-2.5 part terephthalate and 1.9-2.3 part tripoly phosphate sodium STPP in the compound after step (b) is dried, the 1.5-2.0h that stirs, obtain;

(2) weight part by constitutive material drops in Banbury mixer by acrylic elastomer the 3-4 minute that plasticates, and then adds nano-attapulgite, dispersing agent NNO and anti-aging agent OD, mediates 7-9 minute, and discharging is cooled to below 30 ℃ drop in mill;

(3) modified white carbon black 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 160-180 ℃, then the film cut out is put into to die cavity, matched moulds is vulcanized 110-120 and is taken out goods after second, removes rim charge, gets product.