CN105907090A - Spring rubber pad for automobile shock absorber - Google Patents
Spring rubber pad for automobile shock absorber Download PDFInfo
- Publication number
- CN105907090A CN105907090A CN201610326929.2A CN201610326929A CN105907090A CN 105907090 A CN105907090 A CN 105907090A CN 201610326929 A CN201610326929 A CN 201610326929A CN 105907090 A CN105907090 A CN 105907090A
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- CN
- China
- Prior art keywords
- attapulgite
- mass concentration
- rubber cushion
- spring rubber
- glass fibre
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a spring rubber pad for an automobile shock absorber. The spring rubber pad comprises a framework and a rubber sleeve, wherein the framework is sleeved by the rubber sleeve; the framework is a plastic framework; the plastic framework is prepared from the following components in parts by weight in a mixed manner: 66-100 parts of nylon, 20-30 parts of glass fiber, 10-15 parts of modified attapulgite, 5-8 parts of an ethylene-vinyl acetate polymer, 8-12 parts of an ethylene propylene diene monomer, 3-5 parts of a tackifier, 1-2 parts of an antioxidant, 0.5-1 part of a demolding agent, 5-8 parts of phenolic resin and 1-3 parts of calcium chloride. The spring rubber pad is simple to process, short in development period, low in cost, high in strength and good in shock absorption and anti-fatigue property.
Description
Technical field
The present invention relates to a kind of automobile absorber accessory, particularly to a kind of automobile absorber spring rubber cushion.
Background technology
In the lower end of automotive suspension screw spring, need to arrange a spring rubber cushion.The effect of spring rubber cushion is: fixing spiral shell
Rotation spring, it is ensured that spring position and attitude, when wheel hop, Suspension movement, relaxes the shock of spring and spring base, vibration damping
Quiet.Owing to conventional springs rubber cushion is made up of gum, stiffness by itself is less, when spring pressure increases, can cause spring every
Shake pad deformation acutely；It addition, when bearing horizontal external, owing to midfeather is the thinnest, lateral rigidity is minimum, it is impossible to provide enough
Resistance, can cause spring shifted laterally, spring rubber cushion abnormal deformation.Conventional springs rubber cushion, when rubber stiffness becomes big, stretching
Intensity step-down, due to the reciprocating by spring force, too the earlyest generation fatigue fracture was lost efficacy；It addition, work as rubber stiffness
When becoming big, anti-vibration performance is deteriorated, and NVH performance depreciation easily produces noise problem.
Therefore, there is people that the spring rubber cushion of gum is improved, add metallic framework, such as CN 202510605 U
Patent discloses a kind of helical spring vibration isolator, including spring vibration isolation pad and metallic framework.Described spring vibration isolation pad is by rubber system
Becoming, including vibration isolator base and midfeather, midfeather is arranged on described spring vibration isolation pad and vulcanizes on described metallic framework surface, gold
Belonging to skeleton to be completely encapsulated in spring vibration isolation pad, spring vibration isolation pad is structure as a whole with metallic framework.Due at spring vibration isolation pad
Internally installed have metallic framework, improves the rigidity of helical spring vibration isolator, it is ensured that the anti-vibration performance that spring vibration isolation pad is good
And fatigue behaviour.But, spring rubber cushion is spiral helicine, and profile is relative complex, metallic framework typically use acid-cleaning plate punching press and
Becoming, molding is relatively difficult and it needs to the diel that machining shape is complicated, causes the construction cycle long, and cost is high, it is difficult to meet visitor
The friendship phase at family.
Summary of the invention
It is an object of the invention to provide a kind of automobile absorber spring rubber cushion, processing is simple, and the construction cycle is short, cost
Low, intensity is high, has good anti-vibration performance and anti-fatigue performance.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of automobile absorber spring rubber cushion, including skeleton and the rubber sleeve of wrapping frame, described skeleton is plastic skeleton, moulds
Material skeleton is mixed by following components by weight: nylon66 fiber 100 parts, and glass fibre 20-30 part is attapulgite modified
10-15 part, ethylene-vinyl acetate copolymer 5-8 part, ethylene propylene diene rubber 8-12 part, viscosifier 3-5 part, antioxidant 1-2 part,
Releasing agent 0.5-1 part, phenolic resin 5-8 part, calcium chloride 1-3 part.
The present invention replaces conventional metallic framework with plastic skeleton, and processing is simple, quick, low cost, lightweight.
Plastic skeleton material of the present invention adds the olefin copolymer i.e. ethene-vinyl acetate with high functional group content
Copolymer (EVA) improves polar functional group content in composite, promotes that other component is preferably combined with nylon66 fiber, especially
It is the toughening effect of energy reinforcing glass fiber, thus improves the toughness of nylon66 fiber.
Adding glass fibre in formula is main toughness reinforcing composition, and phenolic resin and calcium chloride, as high temperature resistant component, strengthen resistance to
High-temperature behavior, deforms when preventing from vulcanizing together with outer layer rubber.
Ethylene propylene diene rubber, as auxiliary enhancing ingredients, reinforced PA66 toughness and intensity, strengthens other component and nylon
The adhesion of 66, can also promote the resistance to low temperature of nylon 66 material, additionally, the addition of ethylene propylene diene rubber can also be strengthened simultaneously
Bond strength with outer layer rubber.
As preferably, described glass fibre uses after modified, glass fibre method of modifying: glass fibre is immersed quality
Concentration is in the sulfuric acid solution of 95-98%, supersound process 3-5min, is then the silicon of 15%-20% by glass fibre in mass concentration
The ethanol solution of alkane coupling agent KH550 impregnates 10-20min, takes out glass fibre, at 70-80 DEG C, be vacuum dried 3-
5h。
Process by glass fibre being immersed in sulfuric acid solution, to remove the impurity on glass surface and to make fiberglass surfacing
Thick good fortune increases specific surface area, to promote the bond strength with nylon66 fiber.The ethanol solution modified glass of silane coupler
After fiber, the bond strength of glass fibre and nylon66 fiber can be promoted.
As preferably, described attapulgite modified it is prepared by following steps:
(1) attapulgite is calcined at 400-450 DEG C 90-120min, after cooling, pulverize, sieve；
(2) attapulgite after step (1) being processed is with the dimethyl sulphoxide solution of mass concentration 15-25%, and stirring mixing is all
Even attapulgite dispersion liquid；
(3) after adding acid solution stirring and evenly mixing in attapulgite dispersion liquid, supersound process 10-20min, filters, uses water respectively
And absolute ethanol washing, at 75-85 DEG C, then it is vacuum dried 2-3h obtains primary attapulgite modified；
By attapulgite is added in dimethyl sulphoxide solution, it is possible to make attapulgite be uniformly dispersed, follow-up
Acid solution oxidation modification.Acid solution enables to attapulgite hydrophilic to be reduced, and lipophile increases, thus improves attapulgite
Adhesion with PA66.
(4) mix attapulgite modified with primary for titanate coupling agent ethanol solution that mass concentration is 30-50%
20-30min, then adds the ethanol solution mixing 20-30min that mass concentration is 40-50% silane coupler KH560,
Then be vacuum dried 30-60min at 80-90 DEG C, after pulverizing attapulgite modified.
Primary is attapulgite modified due to granule relatively carefully easily reunites, is so unfavorable for following process, and to composite
Performance have considerable influence.Inventor, by finding after long-term experimentation, first passes through use titanate coupling agent to primary
The attapulgite modified for the first time surface that carries out processes, after again by adding the silane coupler primary modified attapulgite to processing
Soil carries out second time surface and processes, and the problem that so can effectively solve primary attapulgite modified reunion makes silane coupler have
The parcel primary of effect is attapulgite modified, further prevents primary attapulgite modified reunion, for follow-up with PA66's
Effective place mat effect has been carried out in mixing, and due to the process of coupling agent, primary is attapulgite modified with mixed with resin evenly,
Bond strength is more preferable, and the composite material compositions of formation is uniform, and mechanical property is good.Titanate coupling agent, silane coupler are all made into
The form of ethanol solution is added, and so attapulgite modified with primary mixing uniformity is good, and onset is good.
The present invention is especially added with attapulgite modified, carries out composite with PA66, attapulgite modified in material bodies
As reinforcing agent and cation capture agent in system, material system is remarkably reinforced and toughening effect.
As preferably, in step (2), the dimethyl sulphoxide solution consumption of mass concentration 15-25% is that every gram of attapulgite makes
Use 10-15mL.
As preferably, acid solution described in step (3) be mass concentration be that the salpeter solution of 5-10% is with mass concentration
The acetic acid solution of 10-15% is according to the mixture of 1:3-5 volume ratio.The specific acid solution of the present invention is changing for attapulgite
Property design, it is possible to effectively make attapulgite hydrophilic reduce, lipophile increase, thus improve the knot of attapulgite and resin
Make a concerted effort, thus strengthen the enhancing of attapulgite, toughening effect.
As preferably, in step (4), the consumption of titanate coupling agent is the 0.3-0.5% of primary attapulgite modified weight,
The consumption of silane coupler KH560 is the 1-1.2% of primary attapulgite modified weight.
As preferably, described antioxidant is selected from one or more in antioxidant 1010, irgasfos 168, antioxidant 1076.
As preferably, described viscosifier are vinyl silane tri-butyl peroxy.Vinyl silane tri-butyl peroxy
Addition can be greatly enhanced the adhesion between a component, strengthens toughness and the intensity of composite, meanwhile, vinyl tri-tert mistake
The addition of oxosilane can also strengthen the bond strength with outer layer rubber.
As preferably, described releasing agent is ethylene bis stearamide.
The invention has the beneficial effects as follows: processing is simple, and the construction cycle is short, low cost, intensity is high, has good vibration isolation
Energy and anti-fatigue performance.
Detailed description of the invention
Below by specific embodiment, technical scheme is described in further detail.
In the present invention, if not refering in particular to, the raw material used and equipment etc. are all commercially available or commonly used in the art.
Method in following embodiment, if no special instructions, is the conventional method of this area.
The structure of spring rubber cushion can be found in the record of CN 202510605 U.
Embodiment 1:
A kind of automobile absorber spring rubber cushion, including plastic skeleton and the rubber sleeve of wrapping frame, plastic skeleton is by weight
Meter is mixed by following components: nylon66 fiber 100kg, glass fibre 20 kg, attapulgite modified 15 kg, ethyl vinyl acetate second
Alkene copolymer (EVA, commercially available) 8 kg, ethylene propylene diene rubber 8kg, vinyl silane tri-butyl peroxy (commercially available) 3 kg, antioxygen
Agent 1010 1kg, ethylene bis stearamide 0.5 kg, phenolic resin 5 kg, calcium chloride 3 kg.
Described glass fibre uses after modified, glass fibre method of modifying: it is 95% that glass fibre immerses mass concentration
Sulfuric acid solution in, supersound process 5min, then by glass fibre in the nothing of the Silane coupling agent KH550 that mass concentration is 15%
Hydrous ethanol solution impregnates 20min, takes out glass fibre, at 70 DEG C, be vacuum dried 5h.
Described attapulgite modified it is prepared by following steps:
(1) attapulgite is calcined at 400 DEG C 120min, after cooling, pulverize, sieve；
(2) in the dimethyl sulphoxide solution of attapulgite and mass concentration 15% after step (1) being processed, every gram of attapulgite
Use 15mL dimethyl sulphoxide solution, be uniformly mixed to obtain attapulgite dispersion liquid；
(3) after adding acid solution stirring and evenly mixing in attapulgite dispersion liquid, supersound process 20min, filters, respectively by water and nothing
Water-ethanol washs, and is then vacuum dried 3h at 75 DEG C and obtains primary attapulgite modified；Described acid solution be mass concentration be 5%
The acetic acid solution that salpeter solution and mass concentration are 15% according to the mixture of 1:5 volume ratio.
(4) by attapulgite modified with primary for titanate coupling agent (commercially available) ethanol solution that mass concentration is 30%
Mixing 20min, then adds the ethanol solution mixing 20min that mass concentration is 40% silane coupler KH560, then
It is vacuum dried 60min at 80 DEG C, obtains attapulgite modified after pulverizing.The consumption of titanate coupling agent is primary attapulgite modified
The 0.3% of weight, the consumption of silane coupler KH560 is the 1% of primary attapulgite modified weight.
Embodiment 2:
A kind of automobile absorber spring rubber cushion, including plastic skeleton and the rubber sleeve of wrapping frame, plastic skeleton is by weight
Meter is mixed by following components: nylon66 fiber 100kg, glass fibre 30 kg, attapulgite modified 10 kg, ethyl vinyl acetate second
Alkene copolymer (EVA, commercially available) 5 kg, ethylene propylene diene rubber 12 kg, vinyl silane tri-butyl peroxy (commercially available) 5 kg, anti-
Oxygen agent 1,076 2 kg, ethylene bis stearamide 1 kg, phenolic resin 8 kg, calcium chloride 1kg.
Described glass fibre uses after modified, glass fibre method of modifying: it is 98% that glass fibre immerses mass concentration
Sulfuric acid solution in, supersound process 3min, then by glass fibre in the nothing of the Silane coupling agent KH550 that mass concentration is 20%
Hydrous ethanol solution impregnates 10min, takes out glass fibre, at 80 DEG C, be vacuum dried 3h.
Described attapulgite modified it is prepared by following steps:
(1) attapulgite is calcined at 450 DEG C 90min, after cooling, pulverize, sieve；
(2) in the dimethyl sulphoxide solution of attapulgite and mass concentration 25% after step (1) being processed, every gram of attapulgite
Use 10mL dimethyl sulphoxide solution, be uniformly mixed to obtain attapulgite dispersion liquid；
(3) after adding acid solution stirring and evenly mixing in attapulgite dispersion liquid, supersound process 10min, filters, respectively by water and nothing
Water-ethanol washs, and is then vacuum dried 2h at 85 DEG C and obtains primary attapulgite modified；Described acid solution be mass concentration be 10%
The acetic acid solution that salpeter solution and mass concentration are 10% according to the mixture of 1:3 volume ratio.
(4) mix attapulgite modified with primary for titanate coupling agent ethanol solution that mass concentration is 50%
30min, then adds the ethanol solution mixing 30min that mass concentration is 50% silane coupler KH560, then 90 DEG C
Lower vacuum drying 30min, obtains attapulgite modified after pulverizing.The consumption of titanate coupling agent is primary attapulgite modified weight
0.5%, the consumption of silane coupler KH560 is the 1.2% of primary attapulgite modified weight.
Embodiment 3:
A kind of automobile absorber spring rubber cushion, including plastic skeleton and the rubber sleeve of wrapping frame, plastic skeleton is by weight
Meter is mixed by following components: nylon66 fiber 100kg, glass fibre 25kg, attapulgite modified 12 kg, ethyl vinyl acetate second
Alkene copolymer (EVA, commercially available) 6 kg, ethylene propylene diene rubber 10 kg, vinyl silane tri-butyl peroxy (commercially available) 4 kg, anti-
Oxygen agent 1,010 1 kg, irgasfos 168 1 kg, ethylene bis stearamide 0.8 kg, phenolic resin 6 kg, calcium chloride 2 kg.
Described glass fibre uses after modified, glass fibre method of modifying: it is 96% that glass fibre immerses mass concentration
Sulfuric acid solution in, supersound process 4min, then by glass fibre in the nothing of the Silane coupling agent KH550 that mass concentration is 18%
Hydrous ethanol solution impregnates 15min, takes out glass fibre, at 75 DEG C, be vacuum dried 4h.
Described attapulgite modified it is prepared by following steps:
(1) attapulgite is calcined at 420 DEG C 100min, after cooling, pulverize, sieve；
(2) in the dimethyl sulphoxide solution of attapulgite and mass concentration 20% after step (1) being processed, every gram of attapulgite
Use 12mL dimethyl sulphoxide solution, be uniformly mixed to obtain attapulgite dispersion liquid；
(3) after adding acid solution stirring and evenly mixing in attapulgite dispersion liquid, supersound process 15min, filters, respectively by water and nothing
Water-ethanol washs, and is then vacuum dried 3h at 80 DEG C and obtains primary attapulgite modified；Described acid solution be mass concentration be 8%
The acetic acid solution that salpeter solution and mass concentration are 12% according to the mixture of 1:4 volume ratio.
(4) mix attapulgite modified with primary for titanate coupling agent ethanol solution that mass concentration is 40%
25min, then adds the ethanol solution mixing 25min that mass concentration is 45% silane coupler KH560, then 85 DEG C
Lower vacuum drying 50min, obtains attapulgite modified after pulverizing.The consumption of titanate coupling agent is primary attapulgite modified weight
0.4%, the consumption of silane coupler KH560 is the 1% of primary attapulgite modified weight.
The plastic skeleton material properties test of the present invention is as follows: hot strength (ISO527) >=180MPa, elongation at break
(ISO527) >=200%, bending strength (ISO178) >=180MPa, bending modulus (ISO178) >=7000MPa, notch shock is strong
Degree (ISO180) >=90KJ/m2.Plasticization temperature >=200 DEG C of plastic skeleton material.
The spring rubber cushion processing of the present invention is simple, and the construction cycle is short, low cost, and intensity is high, has good anti-vibration performance
And anti-fatigue performance.
Embodiment described above is the one preferably scheme of the present invention, not makees the present invention any pro forma
Limit, on the premise of without departing from the technical scheme described in claim, also have other variant and remodeling.
Claims (9)
1. an automobile absorber spring rubber cushion, including skeleton and the rubber sleeve of wrapping frame, it is characterised in that: described skeleton
For plastic skeleton, plastic skeleton is mixed by following components by weight: nylon66 fiber 100 parts, glass fibre 20-30 part,
Attapulgite modified 10-15 part, ethylene-vinyl acetate copolymer 5-8 part, ethylene propylene diene rubber 8-12 part, viscosifier 3-5 part,
Antioxidant 1-2 part, releasing agent 0.5-1 part, phenolic resin 5-8 part, calcium chloride 1-3 part.
A kind of automobile absorber spring rubber cushion the most according to claim 1, it is characterised in that: described glass fibre is through changing
Use after property, glass fibre method of modifying: glass fibre is immersed in the sulfuric acid solution that mass concentration is 95-98%, supersound process
3-5min, then impregnates glass fibre in the ethanol solution of the Silane coupling agent KH550 that mass concentration is 15%-20%
10-20min, takes out glass fibre, is vacuum dried 3-5h at 70-80 DEG C.
A kind of automobile absorber spring rubber cushion the most according to claim 1 and 2, it is characterised in that: described modification is concavo-convex
Rod soil is prepared by following steps:
(1) attapulgite is calcined at 400-450 DEG C 90-120min, after cooling, pulverize, sieve；
(2) attapulgite after step (1) being processed is with the dimethyl sulphoxide solution of mass concentration 15-25%, and stirring mixing is all
Even attapulgite dispersion liquid；
(3) after adding acid solution stirring and evenly mixing in attapulgite dispersion liquid, supersound process 10-20min, filters, uses water respectively
And absolute ethanol washing, at 75-85 DEG C, then it is vacuum dried 2-3h obtains primary attapulgite modified；
(4) 20-is mixed by attapulgite modified with primary for titanate coupling agent ethanol solution that mass concentration is 30-50%
30min, then adds the ethanol solution mixing 20-30min that mass concentration is 40-50% silane coupler KH560, so
It is vacuum dried 30-60min at latter 80-90 DEG C, obtains attapulgite modified after pulverizing.
A kind of automobile absorber spring rubber cushion the most according to claim 3, it is characterised in that: in step (2), quality is dense
The dimethyl sulphoxide solution consumption of degree 15-25% is that every gram of attapulgite uses 10-15mL.
A kind of automobile absorber spring rubber cushion the most according to claim 3, it is characterised in that: acid described in step (3)
Solution be mass concentration be salpeter solution and the mass concentration of 5-10% be that the acetic acid solution of 10-15% is according to 1:3-5 volume ratio
Mixture.
A kind of automobile absorber spring rubber cushion the most according to claim 3, it is characterised in that: titanate esters in step (4)
The consumption of coupling agent is the 0.3-0.5% of primary attapulgite modified weight, and the consumption of silane coupler KH560 is primary modified
The 1-1.2% of attapulgite weight.
A kind of automobile absorber spring rubber cushion the most according to claim 1 and 2, it is characterised in that: described antioxidant selects
One or more in antioxidant 1010, irgasfos 168, antioxidant 1076.
A kind of automobile absorber spring rubber cushion the most according to claim 1 and 2, it is characterised in that: described viscosifier are
Vinyl silane tri-butyl peroxy.
A kind of automobile absorber spring rubber cushion the most according to claim 1 and 2, it is characterised in that: described releasing agent is
Ethylene bis stearamide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610326929.2A CN105907090A (en) | 2016-05-17 | 2016-05-17 | Spring rubber pad for automobile shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610326929.2A CN105907090A (en) | 2016-05-17 | 2016-05-17 | Spring rubber pad for automobile shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105907090A true CN105907090A (en) | 2016-08-31 |
Family
ID=56749310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610326929.2A Pending CN105907090A (en) | 2016-05-17 | 2016-05-17 | Spring rubber pad for automobile shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105907090A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109852041A (en) * | 2018-11-26 | 2019-06-07 | 浙江炬利汽车零部件有限公司 | A kind of biodegradable vehicle foot pad material and preparation method thereof |
| CN113337083A (en) * | 2021-05-25 | 2021-09-03 | 苏州润佳高分子材料有限公司 | Soft rubber material for automobile instrument panel skin |
| CN113549322A (en) * | 2021-08-02 | 2021-10-26 | 安徽省华晟塑胶股份有限公司 | Lightweight bumper shock absorber spring pad |
| CN115044197A (en) * | 2022-06-27 | 2022-09-13 | 江苏建鼎工程塑料有限公司 | Nylon engineering plastic material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102964815A (en) * | 2012-12-04 | 2013-03-13 | 广东石油化工学院 | Microscopically well-dispersed high performance nano reinforced nylon composite and preparation method thereof |
| CN204805424U (en) * | 2015-07-17 | 2015-11-25 | 艾曼斯（苏州）工程塑料有限公司 | A device for supporting bumper shock absorber |
-
2016
- 2016-05-17 CN CN201610326929.2A patent/CN105907090A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102964815A (en) * | 2012-12-04 | 2013-03-13 | 广东石油化工学院 | Microscopically well-dispersed high performance nano reinforced nylon composite and preparation method thereof |
| CN204805424U (en) * | 2015-07-17 | 2015-11-25 | 艾曼斯（苏州）工程塑料有限公司 | A device for supporting bumper shock absorber |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109852041A (en) * | 2018-11-26 | 2019-06-07 | 浙江炬利汽车零部件有限公司 | A kind of biodegradable vehicle foot pad material and preparation method thereof |
| CN113337083A (en) * | 2021-05-25 | 2021-09-03 | 苏州润佳高分子材料有限公司 | Soft rubber material for automobile instrument panel skin |
| CN113549322A (en) * | 2021-08-02 | 2021-10-26 | 安徽省华晟塑胶股份有限公司 | Lightweight bumper shock absorber spring pad |
| CN113549322B (en) * | 2021-08-02 | 2023-08-15 | 安徽省华晟塑胶股份有限公司 | Light shock absorber spring pad |
| CN115044197A (en) * | 2022-06-27 | 2022-09-13 | 江苏建鼎工程塑料有限公司 | Nylon engineering plastic material and preparation method thereof |
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