CN102382334A - Bushing rubber prepared raw material under lightening development of high-grade cars - Google Patents

Abstract

The invention discloses a bushing rubber prepared raw material under lightening development of high-end cars. The bushing rubber prepared raw material comprises the following components in parts by weight: 80 to 90 parts of natural rubber, 10 to 20 parts of butadiene rubber, 2 parts of naphthenic oil, 3.5 parts of zinc oxide, 2 parts of anti-aging agent IPPD (isopropyl-phenyl-paraphenylene diamine), 1 part of anti-aging agent TMQ (trimethyl dihydroquinoline), 2 to 3 parts of microcrystal wax, 6 parts of carbon black N683, 27 parts of carbon black DUREXO, 1.7 parts of sulfur, 1.5 parts of activating agent Struktol ZEH-DL and 1.82 parts of accelerating agent. With the adoption of the bushing rubber prepared raw material under lightening development of the high-end cars prepared by the prepared raw materials, the presulfiding effect and the anti-aging performance of a rubber material can be effectively improved, and the product durability is improved.

Description

Lining rubber preparation raw material under the high-grade car lighting exploitation

Technical field

The invention belongs to the rubber technology field, particularly be the lining rubber preparation raw material under a kind of high-grade car lighting developing background.

Background technology

Damping characteristic that elastomeric material is good and damped vibration characteristic make it have good damping, sound insulation and buffering function, can help vibroshock to cross resonance region.When sizing material stood the cyclic strains of moderate range, for example the compressive strain of 1-20% or 3 times were to this shear strain, with Web Grafiti and the process that reconfigures constantly occurring.Answer in the variable period at each, the strain that progressively strengthens will begin to destroy the key between aggregate from the most weak key.Destroy stronger key then, along with sample deformation, aggregate has formed new key on new position, and these are good for and also can destroy and form again a Delay Process again, and it is the major cause that typical reinforcement sizing material is given birth to heat.In addition, rubber will stand very significantly and very high-frequency repeated deformation, causes producing sizable heat, and temperature is risen.The hysteresis and the internal friction characteristic of rubber represent with dissipation factor that usually dissipation factor is big more, and the damping of rubber and Sheng Re are remarkable more.

Automobile shock spare product is divided into skeleton (structured material) and rubber (functional materials) two portions, and it is bonding to stick with glue agent between the two, and sulfurized also is with tackiness agent high temperature bonding rubber and skeleton simultaneously, and structured material is engineering plastics here, the replacement metal.In this project, the structured material of the lining under the high-grade car lighting exploitation adopts engineering plastics, replaces traditional clean steel spare, the prerequisite that modulus is similar, and plastic density is merely 1/7 of iron and steel, realizes the purpose of design of auto-parts lighting.But the engineering plastics thermal conductivity is the 1/500-1/600 of metal, is 1/4 of cross-linked rubber thermal conductivity.The thermal conductivity of plastic skeleton is low excessively, and is unfavorable to distributing of rubber dynamic heat build up, thereby influences the aging resistance of goods.The tradition cushioning material mainly adding suitable anti-aging agent, improves thermo-oxidative ageing and ozone ageing, improves the ageing-resistant performance of elastomeric material on the external cause, can't can't satisfy this generic request from this material self attributes internal cause of dissipation factor.This project on material chosen and formulation optimization, is improved the damping characteristic and the dissipation factor of viscoelastic material, and the rubber that reduces lighting automobile lining is by a relatively large margin given birth to heat.

Summary of the invention

The object of the present invention is to provide a kind of rubber preparation raw material; At first through selecting suitable rubber clone and carbon black types etc.; The factor that effectively reduces the wastage, the proportioning of appropriate design rubber vulcanization system and select effective protection system improves the resistance toheat of elastomeric material in addition; Improve cure efficiency and ageing-resistant performance, improve durability of product.In order to satisfy above-mentioned requirements, concrete measure of the present invention is following: 1. particle size carbon black is big more, and specific surface area is more little, and rebound resilience is then high more, and dissipation factor is more little, and living heat is low more.The DUREX O carbon black that Degussa company produces; It is the high purity lamp black charcoal of a kind of low specific surface area and high structure; Can reduce the living heat and the rolling resistance of rubber; Its coarse microstructure is different from ordinary carbon black, and this structure has hindered polymkeric substance along the weighting agent surface sliding, thereby produces less energy waste and Sheng Re.Simultaneously and soft black N683 and usefulness, big other carbon black of carbon black instead of part of particle diameter overcomes the defective on the single variety carbon black performance; 2. for petroleum line softener, select alkane oils for use, rather than aromatic hydrocarbon, can make the dissipation factor of sizing material less, living heat is lower; 3. in certain amount ranges, promotor and sulfur consumption increase can improve the cross-linked rubber cross-linking density, and its result improves dynamic elastic modulus, and the factor that reduces the wastage is given birth to hot little; 4. adopt anti-aging agent IPPD and TMQ and usefulness, the heat resistanceheat resistant of its goods, oxygen, flex crack and ozone resistance all have remarkable increase; 5. in addition, the plastic skeleton shotblasting is handled, the selecting for use of thermovulcanizate stick, and injection PLC controls use automatically, and the rubber unvulcanizate dispersity is the factor of control rationally, guarantees that further formulating of recipe well realizes in technological process.

In order to achieve the above object, the technical scheme that the present invention adopts is following, and a kind of high-grade car is with lining rubber preparation raw material, and content is in mass parts:

80 ~ 90 parts of tree elastomers, 10 ~ 20 parts of cis-1,4-polybutadiene rubbers, 2 parts of NOs, 3.5 parts in zinc oxide, 2 parts of anti-aging agent IPPD, 1 part of anti-aging agent TMQ, 2 ~ 3 parts of Microcrystalline Waxes, 683 6 parts of carbon black N, 27 parts of carbon black DUREX O, 1.7 parts of Sulfurs, 1.5 parts of acvator Struktol ZEH-DL, 1.82 parts of promotor.

The initial mooney viscosity ML100 ℃ 1+4 of tree elastomer is controlled at 80 ± 5, and the back Mooney viscosity controller of plasticating is 50 ± 3.Can guarantee that elastomeric material has excellent physical and mechanical performance on the one hand, satisfy the requirement of product processing characteristics on the other hand again.Anti-aging agent IPPD is excellent aftereffect oxygen protective agent hot in nature; It is effective to the life-time service performance of improving lining; When it and anti-aging agent TMQ and usefulness, and consumption can significantly improve the heat-resisting oxygen performance of tree elastomer when reaching 1.5 ~ 2.0 parts, makes elastomeric material have splendid dynamic fatigue property; The meeting above 2.5 parts of anti-aging agent IPPD consumption has a strong impact on the bond strength of elastomeric material and metal, and optimum amount is 2.0 parts.

The vulcanization system of present technique adopts Sulfur: 1.7 parts, 1.5 parts of acvator Struktol ZEH-DL, accelerator CBS: 1.7 parts, promotor TBzTD:0.12; Sulfur and CBS also use the anti-former phenomenon of sulfuration that helps to improve tree elastomer; Improve the ageing-resistant performance of tree elastomer; STRUKTOL ZEH-DL (composition is 2-ethyl acid zinc and white carbon black) can reduce tree elastomer stress relaxation and primary creep, and the activation vulcanization system improves tensile strength better.

Embodiment

Existing specify the lining rubber preparation raw material under the high-grade car lighting exploitation with instance, content is in mass parts:

Example formulations

Sequence number	Component	Supplier	Consumption/part
				1	Tree elastomer TSR CV 60	Ltd of middle rubber global group	90
2	Cis-1,4-polybutadiene rubber EUROPRENE NEOCIS BR 60	POLIMERI EUROPA GMBH	10
				3	Carbon black Carbon black DUREX O	DEGUSSA	27
4	Carbon black Carbon black N 683	EVONIK	6
				5	NO GRAVEX 973	SHELL	2
6	Zinc oxide ZNO	Changzhou magnesium zinc	3.5
				7	Anti-aging agent IPPD	LANXESS	2
8	Anti-aging agent TMQ	LANXESS	1
				9	Microcrystalline Wax WAX T3	TECETE CHEMIE	1
10	Microcrystalline Wax WAX 5700	TECETE CHEMIE	1
				11	Acvator Struktol ZEH-DL	STRUKTOL	1.5
12	Sulphur SULPHUR+OIL	ARNSPERGER	1.7
				13	Accelerator CBS	Chemical repeatedly	1.7
14	Promotor TBzTD	Chemical repeatedly	0.12
				?	Add up to Total	?	148.52

Conventional formulation

Sequence number	Component	Supplier	Consumption/part
				1	Tree elastomer TSR CV 60	Ltd of middle rubber global group	100
2	Carbon black N 550	The Suzhou treasuredization	22
				3	Carbon black N 774	The Suzhou treasuredization	20
4	Fragrance hydrocarbon ils NAPHTHENIC OIL (K) T8	Wuxi Wan Run	6
				5	Zinc oxide ZNO	Changzhou magnesium zinc	5
6	Triple Pressed Stearic Acid ST-ACID	The polite chemical industry of Indonesia	1.5
				7	Anti-aging agent TMQ	The Nanjing chemical industry	1.2
8	Anti-aging agent 6PPD	The Nanjing chemical industry	2.5
				9	Microcrystalline Wax	Last seawater alliance chemical industry	3
10	Sulphur SULPHUR+OIL	Last seawater alliance chemical industry	3.2
				11	Accelerator CBS	Chemical repeatedly	1.0
12	Anti-scorching agent CTP-80	Yanggu Hua Tai	0.125
				13	Promotor RHENOFIT 3555	Lay mattress chemistry	0.2
?	Add up to Total	?	165.725

And following steps for manufacturing:

1. calendering process:

The A refining: at 110 liters of meshing rotor Banbury mixeies, add natural gum and cis-1,4-polybutadiene rubber, refining glue 30 seconds, temperature to 80 degree adds carbon black, NO, zinc oxide, anti-aging agent, Microcrystalline Wax, and the plastic emitting temperature is 150 degree, 6 minutes time; Following sheet cooling is stopped using.

The B refining: after A refining glue was parked 16 hours, 110 liters of meshing rotor Banbury mixeies added sulphur and promotor, and the plastic emitting temperature is 110 degree for the plastic emitting temperature, 4 minutes time; Rapid sheet is down crossed water cooling and is dried up, and gets the test that glue carries out vulcanization curve and physicals.

2. plastic skeleton pre-treatment:

Plastic skeleton dimensional inspection---degreasing---ball blast---adhesive for spraying of marching into the arena;

3. sulfuration: at 280 tons of Desma injection moulding machines, barrel temperature 80 ~ 90 degree, injection gets into, and curing temperature is 160 ~ 165 degree, and the time is because of product structure difference to some extent, generally at 6 ~ 10 minutes, pressure 155 ± 10bar.Product after the sulfuration removes slitter edge, carries out the check of size and outward appearance, can dispatch from the factory after qualified to be user's use of installing.

Be the measured performance of the lining rubber preparation raw material under the high-grade car lighting exploitation as follows, adopt example formulations, comparative formula to produce lining respectively, rubber/end properties measured result is following:

Relatively can find out from test; The corresponding automobile shock spare product of example formulations; Each item physicals (VW 2.8.1 standard) that meets product design, prescription of the present invention and conventional formulation relatively adopt high purity lamp black charcoal DUREX O carbon black and the soft black N683 and the usefulness of low specific surface area and high structure simultaneously; Rationally take multiple formulations combination and controlling of production process such as alkane oils; Under the prerequisite that satisfies yielding rubber design hardness and high rebound value (74), the factor that effectively reduces the wastage is given birth to heat/° C and sample heart portion temperature/° C numerical value (significantly being lower than traditional similar performance damping fills a prescription) through above-mentioned test bit and Gu Te Ritchie; Prove that formulation product dynamic fatigue longevity test of the present invention is superior to similar conventional formulation greatly, realized the purpose of design of the lining rubber preparation raw material under the high-grade car lighting exploitation.

Claims (1)

1. a high-grade car is characterized in that with lining rubber preparation raw material, and is following by the preparation raw material of mass parts:

80 ~ 90 parts of tree elastomers, 10 ~ 20 parts of cis-1,4-polybutadiene rubbers, 2 parts of NOs, 3.5 parts in zinc oxide, 2 parts of anti-aging agent IPPD, 1 part of anti-aging agent TMQ, 2 ~ 3 parts of Microcrystalline Waxes, 683 6 parts of carbon black N, 27 parts of carbon black DUREX O, 1.7 parts of Sulfurs, 1.5 parts of acvator Struktol ZEH-DL, 1.82 parts of promotor.