CN1104216C - Fastener having high silencing property - Google Patents

Abstract

The present invention provides a fastener which does not generate noise when it is engaged to an article and vibration is applied thereto. The fastener comprises a base portion, a stem portion implanted and interconnected to the base portion in a spaced-apart relationship by a predetermined distance from the base portion, and a head portion interconnected to the distal end of the base portion. At least a part of the stem portion or the head portion comprises (1) a polyphase polymer material having a first polymer resin and a second polymer resin, or (2) a polymer resin that increases the flexural modulus of the fastener. Since the fastener does not generate noise during vibration, it is useful as a fastener particularly for fitting automobile components together.

Description

Securing member and manufacture method thereof with high silencing property

FIELD OF THE INVENTION

The present invention relates to a kind of surface fastener with high silencing property.

The background of invention

Securing member is used for industrial circle as a kind of plastic assembly, is used in particular in the auto industry.Recently, the quiet improved important indicator of car mass that become presses for reduction or suppresses fulsome noise (noise that sends when moving as connected securing member).

Japanese unexamined patent (KoKai) No.4-224856 and 2-66365 have disclosed and a kind of Tissuemat E and silicone oil have been mixed the low noise gear resin (gear resin) that makes in the polyacetal resin.Although polyacetal resin has high mechanical strength, its poor toughness, than great and production cost is high.Another problem is when polyacetal resin being used for surperficial connection type securing member, is easy to rupture from its stalk (stem) portion.When adding low molecular weight compound (as Tissuemat E or silicone oil), can temporarily obtain the reduction anti noise really, but make that owing to this compound can run off from the surface reduction anti noise can not last very long.

Japanese unexamined patent (KoKai) No.5-192939 has disclosed a kind of surperficial connection type securing member, and this securing member contains nylon, polypropylene, polyacetals etc.Although this surperficial connection type securing member has many advantages, as is easy to make and high linking intensity, when the occasion that securing member is used to be vibrated the ornament materials of automotive interior (as be used for fixing), it still can produce noise.For example, nylon has high-hygroscopicity, and after it absorbed moisture, its mechanical strength will descend and produce so-called " shake ", thereby is easy to produce noise.Polypropylene has relatively poor hear resistance and wearability, and in use mechanical strength can descend, and therefore is easy to produce noise.

General introduction of the present invention

The securing member that the invention provides a kind of high mechanical properties, long life, is easy to make.In addition, when securing member of the present invention and another assembly being linked and apply vibration, it does not produce noise.

Effect of the present invention is to obtain by the securing member that use has a high silencing property.In an instantiation, securing member of the present invention comprises substrate (base portion), stalk portion (stem portion) and head (headportion), stalk portion is inserted on the base part and is attached thereto together, apart predetermined distance, and head is connected in the end of stalk portion away from substrate.After securing member is connected, reduced the skid resistance in should surface connection type securing member relatively moving.

Be preferably, use the heterogeneous polymerization material to reduce skid resistance in the part of stalk portion or head at least, described heterogeneous polymerization material comprises first fluoropolymer resin and contains second fluoropolymer resin of a kind of fluorocarbon resin or polyvinyl resin with super-high molecular weight at least.

In this article, term " heterogeneous " refers to that two kinds of polymer form a kind of island shape phase separation structure, and preferably first polymer forms continuous phase (sea), and second polymer forms discontinuous phase (island).The size on island is preferably the 0.01-100 micron.

Therefore, these islands (or the discontinuous phase that disperses) can improve quiet performance significantly and not reduce by first polymer favorable mechanical performance and the chemical property.

On the other hand, the polymer of excessive formation discontinuous phase (for example, add excessive fluoropolymer) can form the discontinuous phase of large-size, the behavior of this discontinuous phase is equivalent to continuous phase, thereby reduced the mechanical performance of first polymer, so preferably do not use the polymer of excessive formation discontinuous phase.

In another example, the invention provides a kind of securing member with high silencing property, this securing member comprises substrate (base portion), stalk portion (stem portion) and head (head portion), stalk portion is inserted on the base part and is attached thereto together, apart predetermined distance, head are connected in the end of stalk portion away from substrate.Wherein increased the flexural modulus of elasticity of this securing member,, reduced relative movement distance so that in the relatively moving of surface connection type securing member.

The method preferably of improving flexural modulus of elasticity is to make at least a portion of stalk portion or head contain the amorphous polyamides resin as first fluoropolymer resin.

The present invention also provides a kind of surperficial connection type securing member and a kind of method of making securing member.

Securing member of the present invention often links with aspectant method and other securing member.But, securing member of the present invention can also and many other assemblies (as the metal (predrilledmetal) of hook type material, adhesive-bonded fabric, prebored hole or plastic plate etc.) link.

Detailed description of the present invention

Comprise substrate (base portion), stalk portion (stem portion) and head (head portion), stalk portion is inserted on the base part and is attached thereto together, apart predetermined distance, head is connected in stalk portion and is disclosed in for example U.S. Patent No. 5 away from the securing member and the manufacture method of the end of substrate, 242,646,4,290,832,5,077,870 and 4,984, in 060, the shape of securing member of the present invention and structure and manufacture method are identical with securing member in being disclosed in these United States Patent (USP)s and other known list of references.

The feature of securing member of the present invention mainly is the material compositions of securing member.In this article, term " first fluoropolymer resin " refers to constitute securing member and makes this securing member have the resin of mechanical strength.According to a first aspect of the invention, can be by fluorocarbon resin or polyvinyl resin with super-high molecular weight are mixed this first fluoropolymer resin, to improve quiet performance.According to a second aspect of the invention, can be by suitably selecting first fluoropolymer resin itself to improve quiet performance.

The example that is used for first fluoropolymer resin of first example of the present invention comprises polyamide, acrylic resin, ionomer resin, polyurethane resin and acrylic resin.Wherein, preferably thermoplastic resin such as polyamide and acrylic resin, this is because these resins have higher mechanical strength, long service life and molding easily.Term " polyamide " refers to be often referred to the nylon of crystallization, as 4 by the synthetic polymer of the chemical reaction between organic acid and the amide compound, 6-nylon, 6,6-nylon, 6-nylon, 6,10-nylon, 6,12-nylon, 11-nylon, 12-nylon, aromatic polyamides etc.

According to first example of the present invention, dispersion mutually that can be by will containing second fluoropolymer resin or blending in first fluoropolymer resin to suppress noise.This second fluoropolymer resin comprises fluorocarbon polymer or super high molecular weight (UHMW) polyethylene.The composition that obtains can reduce the skid resistance in the relatively moving of the securing member that connected.

Fluorocarbon resin as second fluoropolymer resin is included in the synthetic polymer that contains one or more fluorine atoms in the molecule.The concrete example of fluorocarbon resin comprises polytetrafluoroethylene (PTFE), fluorinated ethylene-propylene copolymer resin (FEP), ethylene fluoride-perfluoroalkyl vinyl ether copolymer resin (PFA), polytrifluorochloroethylene (PCTFE), ethylene-tetrafluoroethylene copolymer resin (ETFE), polyvinylidene fluoride resin (PVDF), polyfluoroethylene resin (PVF) etc.These resins are by Daikin Kogyo K.K., and Mitsui-Dupont Fluorochemical K.K. waits produce and market, and can buy at an easy rate.

Can commercially availablely buy by the resin that first fluoropolymer resin and fluorocarbon resin are formed.The amide resin that for example contains PTEF (fluorocarbon resin) can be available from Unitika (K.K.), and this product can be used as the material of securing member of the present invention.

Ultra-high molecular weight polyethylene as second fluoropolymer resin is that mean molecule quantity is at least 1,000, and 000 polyethylene can be from Mitsui Petrochemical Co., and Ltd. buys.

Second fluoropolymer resin preferably has lower mobility.For second fluoropolymer resin is mixed mutually with first fluoropolymer resin, be preferably in and with Bitruder pellet is mediated and be molded as to these two kinds of resins in advance before the injection moulding.Can obtain enough long-acting quiet effects by second fluoropolymer resin that in first fluoropolymer resin of per 100 weight portions, adds the 0.1-100 weight portion.

Although the amount of employed second fluoropolymer resin is the amount doesn't matter, if the consumption of finding second polymer less than 0.1 weight portion, the continuation of improving effect has just reduced; On the other hand, if surpassed 100 weight portions, although can obtain long-acting quiet effect, the intensity of securing member has descended significantly.

Securing member often is bonded on the goods (as clad plate) of desire bonding by adhesive tape.In this case, the back side and the adhesion strength between the adhesive tape of securing member base part are considerable, and when the addition of second fluoropolymer resin surpassed 100 weight portions, the adhesion strength of itself and adhesive tape had just descended.In addition, in per 100 weight portions, first fluoropolymer resin, the addition of second fluoropolymer resin is preferably the 50-40 weight portion, is preferably the 10-25 weight portion.

According to a second aspect of the invention, the flexural modulus that increases securing member can suppress noise.Movable distance when increasing flexural modulus and can reduce securing member and be subjected to vibrating.Discovery can use the amorphous polyamides resin as first fluoropolymer resin to increase flexural modulus.

Term " amorphous polyamides resin " refers to the polyamide that obtains by the chemical reaction between diamine compound (as 1,6-hexamethylene diamine and two (4-aminocyclohexyl)-methane Derivatives) and the unsaturated carboxylic acid (as isophthalic acid and terephthalic acids).# 330 polyamide of the Cx2500 of Unitika K.K. and Dupont is just corresponding to this resin.

In this amorphous polyamides resin, in 6-nylon and 6, observed because the mechanical performance decline that suction causes is quite little in the 6-nylon, they are stable relatively.Thereby make them can keep high flexural modulus of elasticity, and high flexural modulus of elasticity is that generation noise institute is requisite when preventing sliding stop.

The most handy amorphous polyamides resin as first fluoropolymer resin of securing member of the present invention to improve quiet performance.Can in this amorphous polyamides resin, mix thermoplastic and high-elastic.Thereby form have heavily stressed absorbability, the discontinuous elastomer phase of amorphous polyamides in mutually that be dispersed in.As a result, can improve the fragility of amorphous polyamides resin significantly, improve the durability of securing member, quiet effect can be kept considerable time.From this effect that produces, preferably mix thermoplastic and high-elastic.

Be used for thermoplastic and high-elastic of the present invention and have the mobility that is lower than amorphous polyamides relatively.Therefore, for thermoplastic and high-elastic is mixed in the amorphous polyamides resin, be preferably in injection moulding before, use machines such as Bitruder, earlier two kinds of resins are mediated and are molded as granular.

From the viewpoint of injection moulding, melt index (MI) is the thermoplastic and high-elastic of 0.1-50 (according to ASTMD-123B, 2,160g load) when preferably using 230 ℃.If melt index (MI) is less than 0.1, because resin has lower flowability and can not make the securing member with very fine structure at an easy rate in injection mold.If melt index (MI) surpasses 50, it is relatively low that mean molecule quantity becomes, and makes amorphous polyamides can not obtain high tenacity.

In addition, the flexural modulus of elasticity of thermoplastic and high-elastic is preferably 100-20,000kgf/cm ²If this flexural modulus of elasticity is less than 100kgf/cm ², relatively low thermoplastic multi-phase composition's the heat resistance that makes of elastomeric mean molecule quantity descends.On the other hand, if this flexural modulus of elasticity greater than 20,000kgf/cm ², the elastic effect of elastomer phase will variation.

In addition, preferably pass through an acid anhydrides or a functional group (as epoxy radicals, chlorine, carboxyl etc.; Or have a functional group of a kind of ester structure, ether structure or amino-formate bond or amino key) above-mentioned thermoplastic and high-elastic is carried out modification.So that the contact-making surface by between reinforced polyamide phase and this elastomer phase is on good terms elastomer and is absorbed external stress suffered when sliding.

The object lesson that is used for this thermoplastic and high-elastic through modification of the present invention comprises:

The olefin type elastomer, as:

1. ethylene/propene copolymer and maleic anhydride modified copolymer thereof;

2. ethylene/ethyl acrylate/copolymer-maleic anhydride;

3. ethylene/acrylic acid copolymer;

4.EPDM；

5. ethylene/methacrylic acid methyl terpolymer;

6. ethylene/ethyl acrylate copolymer;

7. ethylene;

8. ethylene/methacrylic acid glycidyl ester copolymer;

9. ethylene/methacrylic acid ethylene oxidic ester/vinyl acetate copolymer;

10. ethylene/methacrylic acid ethylene oxidic ester/vinyl acetate/methyl acrylate copolymer;

Urethanes type elastomer, as

1. urethanes elastomer;

2. urethanes/vinyl chloride type elastomer;

The polyester-type elastomer;

Chlorination type elastomer, as:

1. vinyl chloride;

The acrylic type elastomer;

The styrene type elastomer, as:

1. styrene/ethylene/butylene/styrene block copolymer (SEBS) and carboxy-modified copolymer (SEBS) thereof;

2. styrene/ethylene/butylene/styrene/acrylonitrile block copolymer and carboxy-modified copolymer thereof;

3. styrene/butadiene/styrene block copolymers;

4. styrene/isoprene/styrene block copolymer;

Fluorine type elastomer, as:

1. vinylidene fluoride type elastomer;

2. fluoride type elastomer.

The object lesson of this thermoplastic and high-elastic through modification comprises: the ethylene/methacrylic acid glycidyl ester copolymer " Bond Fast 20B " of the maleic anhydride modified ethylene/propene elastomer T-7712SP of Nippon Gosei Gomu K.K. system, Sumitomo Kagaku K.K. system and the carboxyl acid modified SEBS copolymer " Toughtec M1943 " of Asahi Kasei K.K. system.

In first fluoropolymer resin of per 100 weight portions, the consumption of thermoplastic and high-elastic can be the 1-150 weight portion.When the amount of thermoplastic and high-elastic surpassed 150 weight portions, the elastomer that is dispersed in the continuous amorphous polyamide had become continuously mutually, thus the noise that produces can not prevent sliding stop the time.If elastomeric amount is less than 1 weight portion, improved DeGrain.In addition, the best consumption of thermoplastic and high-elastic is the 10-70 weight portion.

In another example of the present invention, use the mixture of crystalline polyamide resin and amorphous polyamides resin, with the compatibility of improving toughness and amorphous polyamides and thermoplastic and high-elastic and reduce cost, obtain bigger maneuverability.

The amount that the mixing ratio of crystalline polyamide resin and amorphous polyamides resin is preferably crystalline polyamide resin in the amorphous polyamides resin of 100 weight portions is the 1-150 weight portion.

The crystalline polyamide resin has higher compatibility than amorphous polyamides resin, does not reduce mechanical performance.But, when the amount of crystalline polyamide resin surpasses 150 weight portions, because the increase of water absorbing capacity and reduced flexural modulus of elasticity (described water absorbing capacity is one of character that adds to the crystalline polyamide resin in the amorphous polyamides resin) significantly, thus the flexural modulus of elasticity that is difficult to keep higher (noise when high flexural modulus of elasticity is anti-sliding stop is necessary).With regard to the mixing ratio of crystalline polyamide resin and amorphous polyamides resin, the amount of crystalline polyamide resin is preferably the 5-100 weight portion in the amorphous polyamides resin of per 100 weight portions, is preferably the 10-90 weight portion.

The example that is used for crystalline polyamide resin of the present invention has 4,6-nylon, 6,6-nylon, 6-nylon, 6,11-nylon, 6,12-nylon and copolymer nylon (as 6/66 copolymer nylon, 6/12 copolymer nylon).One more specifically example be the 12-nylon of Ube Industries system commodity " 30140 " by name.

Can be in various other batchings of resin combination adding that are used for making securing member of the present invention.For example, can use colouring agent.After colouring agent can be used to detect securing member especially and breaks away from devastatingly from mold system, whether there is core rod to remain in wherein.The example that is used for colouring agent of the present invention comprises that inorganic pigment, organic pigment, particularly red stain are as colcother, cadmium red etc.; Yellow colorants is as baryta yellow, strontium yellow etc.; Blue colorant is as ultramarine pigment, cobalt blue, phthalocyanine blue etc.; Green colourant is as chromium oxide, cobalt green, phthalocyanine green etc.; And black colorant is as carbon black, graphite etc.

Securing member is a black preferably.After destructiveness broke away from, because nubbin is white, when nubbin contained heterogeneous crystalline polyamide and amorphous polyamides resin, the securing member of black helped range estimation especially.

In addition, use carbon black that securing member is made under the situation of black, can be observed following advantage:

A. use a spot of carbon black just can obtain significant black effect;

B. carbon black has increased the elastic modelling quantity of securing member, has improved quiet performance, and makes mechanical strength control easily.In addition, in addition add polyorganosiloxane resin or polyvinyl resin with super-high molecular weight with the situation that reduces skid resistance under, also can keep the elastic modelling quantity of the securing member be scheduled to constant and needn't worry to reduce adversary's wearing and tearing (handwearing) performance and mechanical strength.

C. when molding goods of the present invention, can produce some resin wastes.For reducing cost, this waste material is mixed with new resin material, so that reuse.In this case, carbon black can make mixed process carry out (smoothes the mixing.) smoothly.

D. the carbon black that adds scheduled volume can make securing member have electric conductivity.

Attention can be used thermals, acetylene black, channel black, furnace black etc. as carbon black.More particularly, can use the Carbon Black Asahi #51 of Asahi Carbon system, 15, Asahi Thermal; The Carbon Black #2400B of Mitsubishi Chemical system, #100, MA8, #40 etc.Although containing the chain carbon black (because it can increase electric conductivity) of many particles that are coupled to each other also is preferably, the shape of carbon black is preferably coccoid or fibrous.

The average original particle size of these carbon blacks is preferably 10-150nm.When granularity during less than 10nm, it is not very difficult mixing and disperseing, and when granularity during greater than 150nm, colorability has just reduced significantly.Therefore, the colorability that is suitable for carbon black of the present invention is at least 50%, preferably is at least 100%.This is because can carry out black colorant with more a spot of carbon black.

Notice that average original particle size records with electron microscope, colorability is measured according to JIS K6221.

On the other hand, using graphite is to add a spot of graphite just can produce lubricant effect, high quiet effect and electric conductivity as the advantage of black colorant.

As colouring agent of the present invention, the carbon black that applies graphite is preferred.Add very few number and just can produce coloring effect and enough lubricant effects.The example of this colouring agent has the product of commodity #4010, the #4040 by name of Mitsubishi Chemical system; The commodity of CABOT system are called the product of spheron 6, stering R etc.

In the present invention, the consumption of colouring agent is the 0.1-100 weight portion in per 100 weight portion high molecular weight resin materials.Consumption can cause very poor coloring effect less than 0.1 weight portion, and consumption can make dispersion and mixing become difficult greater than 100 weight portions, need carry out high temperature mold operation and mould, and can lose surface lubrication.

In addition, the consumption of colouring agent is preferably the 0.5-50 weight portion, is preferably the 1.0-30 weight portion.In this amount ranges, do not worry that colouring agent can influence the super high molecular weight resin flow when molding.

Can also use other batching in the present invention.These batchings comprise paraffin and higher fatty acids such as hexadecylic acid, stearic acid, oleic acid etc.In addition, can be at a spot of calcium stearate of resin combination adding that is used for making securing member, fatty acid ester, mineral oil, silicone oil etc.The component of these interpolations plays a kind of auxiliary quiet effect.In 100 parts by weight resin, the consumption of these additives is the 0.01-5 weight portion, is preferably the 0.1-3 weight portion.If consumption exceeds the scope of 0.01-0.5 weight portion, the auxiliary effect of improving will be very poor, or will descend with the cementitiousness of adhesive tape.

Above-mentioned resin combination also can be used to improve securing member, and the securing member that for example has so-called clip, suspension hook or clamper below base part is to make things convenient for connecting between securing member and liner.

Owing to reduced skid resistance, above-mentioned resin combination can not only be used for securing member, and can also be used for clip, suspension hook or the clamper of fastener-free.

To narrate the manufacture method of securing member below.More particularly, available following method is made securing member.

Manufacture method 1

Details is described in U.S. Patent No. 5,242, and in 646, this method comprises the following steps:

A. make and have the mouldable mould that goes out the cavity of securing member base part;

B. make the core rod that is used for stalk portion, described core rod can make stalk portion non-destructive ground break away from;

C. make and have the mouldable mould that goes out the cavity of fastener head;

D. the resin injection mould of fusion is made securing member;

E. will be connected with securing member demoulding from mould of system stalk core rod, be not to remove system stalk core rod devastatingly.

The advantage of this method is the securing member that can make complicated shape economically, accurately.

Manufacture method 2

Details is described in U.S. Patent No. 4,290, and in 174, this method comprises the following steps:

Two sheet materials that a. will be used for base part are arranged mutually Face to face with predetermined gap, and they are carried charging with identical direction;

B. with dashing pendulum monofilament is alternately inserted in the sheet material of these two heating and fusion;

C. the mid portion at the predetermined gap of sheet material cuts off described monofilament;

D. the part with monofilament heats and fusion, and is shaped to head.

The advantage of this method is the securing member goods that can obtain twining, and can make this product economically, expeditiously.

Manufacture method 3

Details is described in U.S. Patent No. 5,077, and in 870, this method comprises the following steps:

A. rotate a mould that has cavity vertically, described cavity has a hole that is used to add molten resin, and this hole is corresponding to the stalk portion of surface connection type securing member;

B. suck air along the direction that enters mould;

C. with the resin injection moulding of fusion to die surface;

D. molding is good resin is peeled off from mould, and is heated to be molded as head.

The advantage of this method is the securing member goods that can obtain twining, and can make this product economically, expeditiously.

Manufacture method 4

Details is described in U.S. Patent No. 4,894, and in 060, this method comprises the following steps:

A. with the resin extruding machine resin extruded of fusion is molded as rail shape article, these article comprise base part, stalk portion and head, and stalk portion and head are separated predetermined gap on the direction of extrusion molding;

B. on these rail shape article, be carved into part, respectively be carved into the apart predetermined spacing of part along the direction formation vertical with plastic extruding direction;

C. heat base part and stretch it, make each stalk part adjacent one another are on the securing member leave along plastic extruding direction.

The advantage of this method is to make the securing member with higher-strength economically.

Embodiment

With reference to embodiment the present invention is described in further detail below.

In the following example, use Nissei Resin Industries Co., the PS-40 injection machine of Ltd system makes Sumitomo 3M Co., the standard shape surface fastener of Ltd, and carry out following assessment:

1. noise fest

With primer C-100 and Sumitomo 3M Co., the acrylic acid foamed glue adhesive tape of Ltd system is bonded to two securing members two respectively independently on the stainless steel substrates, makes it to be coupled to each other with the direction of intersecting then.Then, a slice stainless steel substrates is fixed, another sheet uses the vibrator (the little vibrator of Akashi K.K. system MEE-035) that has displacement meter (Keyence Co., Ltd. system LD-2500 laser displacement gauge) with the amplitude of 0.5-1.0mm, the frequency vibration of 12Hz, to measure the noise that produces.

Assessment result OK represents not produce noise, and NG represents to produce noise.

2. water absorption test:

According to ASTM D570, at 23 ℃ each sample flooded in water and to carry out the water absorption test in 24 hours.With " good ", " medium ", " poor " represent respectively water absorption rate for be lower than 0.5%, 0.5-2.0% and be higher than 2.0%.

3. rate of change:

After room temperature is subjected to each test specimen to flood 48 hours in water, the flexural modulus of elasticity when measuring its flexural modulus of elasticity and adiabatic drying according to ASTM D790, calculate rate of change with following formula:

Formula 1

Rate of change=(elastic modelling quantity behind the dipping)/(elastic modelling quantity during adiabatic drying)

Rate of change is not less than 0.5% and is considered as OK, and rate of change is considered as NG less than 0.5%

The code name that is used for the material of the following example refers to following compounds respectively:

Table 1

A1030TF:Unitika Co., the Ltd. system contains the 6-nylon of PTFE

A125TF:Unitika Co., the Ltd. system contains 6 of PTFE, 6-nylon

A1030M:Unitika Co., the Ltd. system contains the 6-nylon of molybdenum bisuphide

A125-T5959:Unitika Co., the Ltd. system contains 6 of silicone oil, 6-nylon

Ex1030:Unitika Co., the Ltd. system contains the 6-nylon of sour modified rubber

Cx2500:Unitika Co., Ltd. makes amorphous nylon

T7712SP: maleic anhydride modified ethylene propylene rubber

3014U:Ube Industries, Co., Ltd. system 12-nylon

1200S:Asahi Chemical Industy Co., Ltd system 6,6-nylon

1011CH5:Mitsubishi Chemical Industy Co., Ltd system 6-nylon

BF20B:Sumitomo Chemical Ind.Co., Ltd system epoxy modifying polyethylene copolymer

M7686:Asahi Chemical Industy Co., Ltd makes polypropylene

UHMW:Mitsui Petrochemical Industy Co., Ltd makes ultra-high molecular weight polyethylene

PTEF:Wako Pure Chemical Co., Ltd makes polytetrafluoroethylene (PTFE)

Stearic acid: Wako Pure Chemical Co., Ltd makes stearic acid

Charcoal: Asahi Carbon Co., Ltd system " Asahi Thermal "

# 4215:Sumitomo 3M Co., Ltd. system acrylic foam plastic tape

C-100:Sumitomo 3M Co., Ltd. makes primer

P delryn 500:E.I.Dupont Co., Ltd makes polyacetal resin

M1943:Asahi Chemical Industy Co., the carboxy-modified SEBS of Ltd system

Embodiment 1-6

Use the composition of first example of the present invention to make securing member, and respectively it is assessed.Table 2 has been listed the proportioning of the material that uses, the ratio of each component and assessment result in the composition.

Table 2

Embodiment	1	2	3	4	5	6
							Material (weight ratio)	A125Tf (100)	1200S (99) PTFE (1) stearic acid (0.2)	M7686 (60) UHMW (40) charcoal (0.6)	A1030TF (100)	3014U(96) PTFE(4)	A125TF(67) PTFE(33)
Main fluoropolymer resin second component of component (weight ratio)	PA(100) PTFE(33)	PA(100) PTFE(1)	PP(100) UP(67)	PA(100) PTFE(11)	PA(100) PTFE(4)	PA(100) PTFE(50)
							Assessment result water imbibition rate of change noise 0.5mm 1.0mm	Medium OK OK OK	Medium OK OK OK	Good OK OK OK	Medium OK OK OK	Medium OK OK OK	Good OK OK OK

Annotate: PA: polyamide PP: acrylic resin

PTFE: polyflon UP: VHD polyvinyl resin

UHMW: polyvinyl resin with super-high molecular weight

Embodiment 7-13

Use the composition of second example of the present invention to make securing member, and respectively it is assessed.Table 3 has been listed the proportioning of the material that uses, the ratio of each component and assessment result in the composition.

Table 3

Embodiment	7	8	9	10	11	12	13
								Material (weight ratio)	Cx2500(98) T7712SP(2)	Cx2500(80) T7712SP(10) 3014U(10)	Cx2500 (54) Ex1030 (45), charcoal (0.8) stearic acid (0.2)	Cx2500(70) BF20B(30)	Cx2500(62) BF20B(38)	#330	Cx2500(45) 3014U(32) M1943(20)
The unformed polyamide elastomer of component (weight ratio) crystalline polyamide	(100) EP(2) PA(16)	(100) EP(15) PA(31)	(100) EP(29) PA(84)	(100) EPOXY-EP(50) PA(16)	(100) EPOXY- EP(71) PA(16)	(100)	(100) C-SEBS(48) PA(94)
								Assessment result rate of change water imbibition noise 0.5mm 1.0mm	Good OK OK OK	Good OK OK OK	Medium OK OK OK	Good OK OK OK	Good OK OK OK	Good OK OK OK	Good OK OK OK

Annotate: EP: ethylene/propene copolymer EPOXY-EP: epoxide modified ethylene copolymer

C-SEBS: carboxy-modified SEBS Cl-ure: vinyl chloride/urethane copolymers

PA: polyamide

Comparative example 1-5:

Use does not belong to composition of the present invention and makes securing member, and respectively it is assessed.The results are shown in table 4.

Table 4

Comparative example	1	2	3	4	5
						Material (weight ratio)	1011CH5 (100)	M7686 (100)	P-delryn 500 (100)	A125-T5959 (100)	A103M (100)
Main other component of fluoropolymer resin of component (weight ratio)	PA(100) -	PP(100) -	Pac(100) -	PA (100) silicone oil (3)	The molybdenum that PA (100) has solidified
						Assessment result water imbibition rate of change noise 0.5mm 1.0mm	Difference NG NG NG	Good OK NG NG	Good OK NG NG	Difference NG NG NG	Difference NG NG NG

Annotate: PA: polyamide

PP: acrylic resin

Pac: polyacetal resin

Effect of the present invention

As mentioned above, when securing member of the present invention being applied vibration, it does not produce noise. Therefore, securing member of the present invention be a kind of especially effectively, be used for the securing member of assembling automobile component.

Claims (21)

1. securing member with high silencing property, comprise substrate, stalk portion and head, stalk portion is inserted on the base part and is attached thereto together, apart predetermined distance, head is connected in the end of stalk portion away from substrate, the at least a portion that it is characterized in that described stalk portion or described head contains the multiphase polymer material, described multiphase polymer material comprises first fluoropolymer resin and contains second fluoropolymer resin of a kind of fluorocarbon resin or polyvinyl resin with super-high molecular weight at least, after described securing member and goods link, descended for the antiskid power that relatively moves.

2. the securing member with high silencing property described in claim 1 is characterized in that the goods that connected are another securing members that connect face-to-face with described securing member.

3. the securing member with high silencing property described in claim 1 is characterized in that adding described fluorocarbon resin of 0.1-100 weight portion or described polyvinyl resin with super-high molecular weight in described first fluoropolymer resin of 100 weight portions.

4. securing member with high silencing property, comprise substrate, stalk portion and head, stalk portion is inserted on the base part and is attached thereto together, apart predetermined distance, head is connected in the end of stalk portion away from substrate, the at least a portion that it is characterized in that described stalk portion or described head contains the amorphous polyamides resin as first fluoropolymer resin, when described securing member with after goods connect, the distance that it relatively moves when relatively moving has reduced.

5. the securing member described in claim 4 with high silencing property, it is characterized in that first fluoropolymer resin comprises the hybrid resin of a kind of amorphous polyamides resin and crystalline polyamide resin, the ratio of this hybrid resin is that the described amorphous polyamides resin of per 100 weight portions contains the described crystalline polyamide resin of 1-150 weight portion.

6. the securing member with high silencing property as claimed in claim 4 is characterized in that adding 1-150 weight portion thermoplastic and high-elastic in described first fluoropolymer resin of 100 weight portions.

7. the securing member with high silencing property described in claim 6 is characterized in that described thermoplastic and high-elastic contains at least a composition that is selected from epoxy radicals, carboxyl, acid anhydrides, ester bond, ehter bond, amino-formate bond, amino and halogen.

8. the securing member described in claim 1 or 4 with high silencing property, it is characterized in that this securing member has a kind of heterogeneous structure that contains at least two kinds of polymer, wherein at least a polymer forms continuous phase, at least a other polymer forms discontinuous phase.

9. the securing member with high silencing property described in claim 8 is characterized in that discontinuous phase is of a size of the 0.01-100 micron.

10. as any one described securing member in claim 1 or 4, it is characterized in that this securing member also contains colouring agent with high silencing property.

11. securing member, comprise substrate, stalk portion and head, stalk portion is inserted on the base part and is attached thereto together, apart predetermined distance, head is connected in the end of stalk portion away from substrate, it is characterized in that described stalk portion and described head comprise a kind of fluoropolymer resin system, described fluoropolymer resin system is to be selected to make described stalk portion flexural modulus first fluoropolymer resin that increases and the heterogeneous resin system of being made up of first continuous phase and second discontinuous phase, described first fluoropolymer resin comprises the amorphous polyamides resin, this resin system can be at securing member with after goods connect, and reduce the sound that produces when described stalk portion moves.

12. the securing member described in claim 11 is characterized in that having a kind of thermoplastic and high-elastic to be dispersed in the described amorphous polyamides resin.

13. the securing member described in claim 12 is characterized in that the consumption of thermoplastic and high-elastic described in the described amorphous polyamides resin of per 100 weight portions is the 1-150 weight portion.

14. the securing member described in claim 12 is characterized in that a kind of crystalline polyamide resin mixes mutually with described amorphous polyamides resin.

15. the securing member described in claim 14 is characterized in that the consumption of crystalline polyamide resin described in the described amorphous polyamides resin of per 100 weight portions is the 1-150 weight portion.

16. the securing member system described in claim 11, it is characterized in that described first continuous phase is selected from polyamide, acrylic resin, ionomer resin and acrylic materials, described second discontinuous phase is selected from fluorocarbon polymer and superhigh molecular weight polyethylene material.

17. the securing member system described in claim 16 is characterized in that the consumption of discontinuous phase material described in the described continuous state material of per 100 weight portions is the 0.1-100 weight portion.

18. the method for the securing member with high silencing property described in manufacturing such as the claim 1,4 or 11, its step comprises:

A. make and have the mouldable mould that goes out the cavity of securing member base part;

B. make the core rod that is used for stalk portion, described core rod can make stalk portion non-destructive ground break away from;

C. make and have the mouldable mould that goes out the cavity of fastener head;

D. the resin injection mould of fusion is made securing member;

E. will be connected with securing member demoulding from mould of system stalk core rod, be not to remove system stalk core rod devastatingly.

19. the method for the securing member with high silencing property described in manufacturing such as the claim 1,4 or 11, its step comprises:

Two sheet materials that a. will be used for base part are arranged mutually Face to face with predetermined gap, and they are carried charging with identical direction;

B. with dashing pendulum monofilament is alternately inserted in the sheet material of these two heating and fusion;

C. the mid portion at the predetermined gap of sheet material cuts off described monofilament;

D. the part with monofilament heats and fusion, and is shaped to head.

20. the method for the securing member with high silencing property described in manufacturing such as the claim 1,4 or 11, its step comprises:

Two sheet materials that a. will be used for base part are arranged mutually Face to face with predetermined gap, and they are carried charging with identical direction;

B. with dashing pendulum monofilament is alternately inserted in the sheet material of these two heating and fusion;

C. the mid portion at the predetermined gap of sheet material cuts off described monofilament;

D. the part with monofilament heats and fusion, and is shaped to head.

21. the method for the securing member with high silencing property described in manufacturing such as the claim 1,4 or 11, its step comprises:

A. with the resin extruding machine resin extruded of fusion is molded as rail shape article, these article comprise base part, stalk portion and head, and stalk portion and head are separated predetermined gap on the direction of extrusion molding;

B. on these rail shape article, be carved into part, respectively be carved into the apart predetermined spacing of part along the direction formation vertical with plastic extruding direction;

C. heat base part and stretch it, make each stalk part adjacent one another are on the securing member leave along plastic extruding direction.