CN108117726A - A kind of refrigerant PBT resin composition of fiberglass reinforced and preparation method thereof - Google Patents
A kind of refrigerant PBT resin composition of fiberglass reinforced and preparation method thereof Download PDFInfo
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- CN108117726A CN108117726A CN201611072739.9A CN201611072739A CN108117726A CN 108117726 A CN108117726 A CN 108117726A CN 201611072739 A CN201611072739 A CN 201611072739A CN 108117726 A CN108117726 A CN 108117726A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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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
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/006—Additives being defined by their surface area
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
Refrigerant PBT resin composition the present invention provides a kind of fiberglass reinforced and preparation method thereof.The refrigerant PBT resin composition of the fiberglass reinforced includes following component count by weight percentage：48.0 ~ 95.0% polybutylene terephthalate (PBT), more than 0 to not more than 50% glass fibre, 1 ~ 10% inorganic porous material adsorbent.The present invention adds inorganic porous material adsorbent in glass fiber reinforced PBT resin ingredient, can adsorb the small-molecule substance that PBT material may be precipitated, so as to reduce amount of precipitation；Meanwhile using inorganic adsorbent scheme without using chain extender, end-capping reagent or coupling agent, reduce to Resin Flow can influence, resin combination is made to remain preferable mobility.
Description
Technical field
The invention belongs to engineering plastics fields, and in particular to a kind of PBT resin composition of fiberglass reinforced.
Background technology
Freezer compressor muffler and compressor of air conditioner coil rack, due to contacting directly refrigerant, it may occur however that muffler
Or the small-molecule substance in framework material is precipitated, once the excessively high refrigeration pipe plug that can make compressor of the amount of precipitation of small-molecule substance
Plug causes refrigeration effect failure, therefore the material for manufacturing muffler and motor coil skeleton needs the work(that there is refrigerant to be precipitated
Energy.The research direction of refrigerant PBT material is concentrated mainly at present reduce to the greatest extent can cause PBT composite be precipitated because
Element.If patent application CN103013068A discloses a kind of PBT composite of high temperature resistant refrigerant precipitation, mainly using more officials
The end-capping reagent of energy epoxide group chain extender, magnalium hydrotalcite acid absorbent and 1 ~ 3 epoxide group coordinates to reduce entire resin group
The content for the lower-molecular substance that objects system retains is closed, using additives such as chain extender, coupling agent, end-capping reagents, although can lead to
Chemical reaction is crossed, increases the molecular weight of PBT material, reduces small-molecule substance, but it uses and can Resin Flow be reduced.
As freezer compressor muffler and compressor of air conditioner coil rack material in addition to requiring refrigerant that performance is precipitated, mobility
It is an important factor, therefore, a kind of good mobility and the PBT of refrigerant precipitation performance of having both of exploitation has actual anticipate
Justice.
The content of the invention
The purpose of the invention is to overcome refrigerant glass fiber reinforced PBT resin mobility is less high in the prior art to ask
Topic provides a kind of refrigerant PBT resin composition of fiberglass reinforced.The refrigerant PBT resin combination of the fiberglass reinforced
There is object good refrigerant performance is precipitated, and keep higher mobility.
Another object of the present invention is to provide the preparation method of the refrigerant PBT resin composition of the fiberglass reinforced.
Another object of the present invention is to provide the application of the refrigerant PBT resin composition of the fiberglass reinforced.
The above-mentioned purpose of the present invention is achieved by following technical solution：
The refrigerant PBT resin composition of a kind of fiberglass reinforced, by component as follows count by weight percentage：
48.0 ~ 95.0 % of polybutylene terephthalate (PBT)；
Glass fibre is more than 0 to not more than 50 %；
1 ~ 10 % of inorganic porous material adsorbent.
The refrigerant PBT resin composition of a kind of fiberglass reinforced, by following component count by weight percentage：
48.0 ~ 95.0 % of polybutylene terephthalate (PBT)；
Glass fibre is more than 0 to not more than 50 %；
1 ~ 10 % of inorganic porous material adsorbent；
Antioxidant 0.1 ~ 1%.
Inventor has found that, with inorganic adsorbent is used in glass fiber reinforced PBT resin, inorganic adsorbent can pass through physical absorption
Effect can well adsorbing composition be precipitated small-molecule substance, improve PBT resin composition refrigerant be precipitated performance, and
And the additives such as the chain extender using the prior art, end-capping reagent are which obviated, therefore the PBT composition obtained keeps preferably stream
Dynamic performance.
Preferably, the inorganic porous material adsorbent the weight content of the refrigerant PBT resin composition for 1 ~
5%, more preferably 1 ~ 3%.
Preferably, the intrinsic viscosity of the polybutylene terephthalate (PBT) is 0.8 ~ 1.3 ml/g.
Preferably, the glass fibre is a diameter of 10 ~ 25 μm of alkali-free glass fibre.
Preferably, the inorganic porous material adsorbent is any one in activated carbon, diatomite or porous silica
Kind is several.
Preferably, the specific surface area of the inorganic porous material adsorbent is 40 ~ 4000m2/g。
It is highly preferred that the specific surface area of the inorganic porous material adsorbent is 40 ~ 800m2/g。
According to different materials, property has difference, it is highly preferred that when the inorganic porous material adsorbent is activated carbon
When, its general specific surface area is higher, and preferably its specific surface area is 400 ~ 4000m2/g；When the inorganic porous material adsorbent
For diatomite or porous silica when, specific surface area is small compared with activated carbon, when the inorganic porous material adsorbent be silicon
During diatomaceous earth, preferably its specific surface area is 40 ~ 100m2/g；It is excellent when the inorganic porous material adsorbent is porous silica
It is 100 ~ 800m to select its specific surface area2/g.But such as this kind of material of activated carbon, color is deeper, in use may shadow
The color of composition is rung, using can be restricted.It is preferred that the inorganic porous material adsorbent is diatomite or porous silica
Silicon.In the present invention, it is certain so as to have to the promotion of its mechanical property can to reduce the degradation of PBT resin in process for antioxidant
Effect.Antioxidant can be antioxidant commonly used in the art, and difference on effect is little between different antioxidant.
It is highly preferred that the antioxidant is pentaerythritol ester kind antioxidant or suffocated amine antioxidant.
The preparation method of the refrigerant PBT resin composition of the fiberglass reinforced, comprises the following steps：
S1. polybutylene terephthalate (PBT), glass fibre, inorganic porous material adsorbent are weighed；
S2. double screw extruder will be entered after polybutylene terephthalate (PBT), inorganic porous material adsorbent uniformly mixing,
Glass fibre is added in 6th area of double screw extruder, extrusion obtains preform；
S3. by gained preform cooling in S2, dry, pelletizing up to the refrigerant PBT resin composition of fiberglass reinforced.
When containing antioxidant in the refrigerant PBT resin composition of the fiberglass reinforced, antioxidant is in S2, with poly- pair
Benzene dicarboxylic acid butanediol ester, inorganic porous material adsorbent enter double screw extruder after uniformly mixing.
Preferably, in step S2, the technological parameter of double screw extruder is：One 210 ~ 220 DEG C of area's temperature, two area's temperature
220 ~ 230 DEG C, three, four, five and six 230 ~ 240 DEG C of area's temperature, seven 240 ~ 250 DEG C of area's temperature, eight 240 ~ 250 DEG C of area's temperature, nine
230 ~ 240 DEG C of area's temperature, 200 ~ 400 revs/min of engine speed.
Application of the refrigerant PBT resin composition of the fiberglass reinforced in the cold-resistant catalytic material of compressor is prepared.
Compared with prior art, the present invention has following advantageous effects：
The refrigerant PBT resin composition of fiberglass reinforced prepared by the present invention, can to adsorb by inorganic porous material adsorbent
The small-molecule substance that can be precipitated carries out chain extension, sealing end etc. to PBT with the prior art and promotes decrease in molecular weight small-molecule substance
Content thinking it is different, avoid because the defects of molecular weight raising causes PBT composition mobile performance to decline, gained
PBT resin maintains good mobility while performance is precipitated with good refrigerant.
Specific embodiment
With reference to specific embodiment and comparative example, the present invention is described in further detail, but the present invention is not limited to
Following embodiments.
In embodiment, raw material used is commercial goods.In embodiment, the percentage composition contains for weight percent
Amount.
Alkali-free glass fibre is purchased from, PFG Fiber Glass Corporation, a diameter of 10 μm.PBT is purchased from Taiwan Changchun chemical industry
Co., Ltd, trade mark PBT 1100-211M, intrinsic viscosity are 1.0 mL/g.
Diatomite is 40 ~ 65m purchased from Yi Ruishi diatomite Co., Ltd near a river, trade mark INFILM 300, specific surface area2/
g。
Activated carbon A is purchased from Fujian Xinsen Carbon Co., Ltd., and specific surface area is 1400 ~ 1800m2/g。
Activated carbon B is purchased from Fujian Xinsen Carbon Co., Ltd., specific surface area 2100m2/g。
Porous silica is purchased from one Shi Tong materials Science and Technology Co., Ltd. of Anhui, and specific surface area is 200 ~ 260m2/g。
Antioxidant A is pentaerythritol ester kind antioxidant, commercially available
Antioxidant B is suffocated amine antioxidant, commercially available
It is combined by the refrigerant PBT resin for being formulated and preparing fiberglass reinforced as steps described below of embodiment in table 1 and blank example
Object：
S1. polybutylene terephthalate (PBT), alkali-free glass fibre, inorganic porous material adsorbent are weighed；
S2. twin-screw will be entered after polybutylene terephthalate (PBT) and inorganic porous material adsorbent, antioxidant uniformly mixing
Extruder, glass fibre is added in 6th area of double screw extruder, and extrusion obtains preform；
S3. by gained preform cooling in S2, dry, pelletizing up to the refrigerant PBT resin composition of fiberglass reinforced.
The technological parameter of double screw extruder is in step S2：One 210 ~ 220 DEG C of area's temperature, two 220 ~ 230 DEG C of area's temperature,
3rd, 230 ~ 240 DEG C of four, five and six area's temperature, seven 240 ~ 250 DEG C of area's temperature, eight 240 ~ 250 DEG C of area's temperature, nine area's temperature 230 ~
240 DEG C, 200 ~ 400 revs/min of engine speed.
The preparation method of the composition of comparative example is carried out with reference to CN103013068A.
S1. polybutylene terephthalate (PBT), the chain extender of group containing multi-functional epoxy ADR-4370, magnalium neatly are weighed
Stone acid absorbent, the end-capping reagent SAG-005 containing 1 ~ 3 epoxide group, nucleant agent N AV101, amino silicone alkanes coupling agent KH550, season
Doutrate antioxidant；
S2. premix will be obtained after the uniform mixing of the component of S1, premix is fed from one area's main feed mouth of double screw extruder,
Glass fibre is added in 6th area of double screw extruder, extrusion obtains preform；
S3. by gained preform cooling in S2, dry, pelletizing up to the refrigerant PBT resin composition of fiberglass reinforced.
The technological parameter of double screw extruder is in step S2：One 210 ~ 220 DEG C of area's temperature, two 220 ~ 230 DEG C of area's temperature,
3rd, 230 ~ 240 DEG C of four, five and six area's temperature, seven 240 ~ 250 DEG C of area's temperature, eight 240 ~ 250 DEG C of area's temperature, nine area's temperature 230 ~
240 DEG C, 300 ~ 400 revs/min of engine speed.
The component and dosage of 1 embodiment of the present invention 1 ~ 7 of table and blank example（%）
Each resin combination of gained will be prepared according to formula in above-mentioned table, carries out corresponding performance test by the following method,
Acquired results are as shown in table 2.
IZOD notch impact strengths are tested by GB/T 1843-2008 standards, and the mm of specimen size 80mm × 10 ×
4mm, notch depth 2mm, test equipment are the TiniusOlisen shock machines of Willow Grove companies of the U.S..
Tensile property is evaluated by measuring tensile break strength, and test is carried out by 1040.2 standards of GB/T, specimen size
For the mm of the mm of 170 mm × 20 × 4, test speed 10mm/ min, test equipment is Germany's Zwick Company Electronic pulling experiments
Machine.
Bending property is evaluated by measuring bending strength, and test is carried out by GB/T 9341-2008 standards, specimen size
For 80mm × 10 mm × 4mm, test speed is 2 mm/ min, and test equipment is real for the electronics pulling force of Zwick companies of Germany
Test machine.
Mobility is measured by melting means, and test condition is 250 DEG C, 2.16 kg, and test equipment is U.S. Zwick/
Roell companies BMF-003 type melting means instrument.
Refrigerant performance using refrigerant and refrigerator oil mixing liquid in autoclave by extracting material to comment
The refrigerant of valency material.Refrigerant uses R22（Monochlorodifluoromethane）, refrigerator oil is using the Kunlun 4GS, refrigerant and refrigerator oil
Ratio is 1:3, extraction temperature is 150 DEG C, when extraction time is 336 small, by whether having precipitate to evaluate refrigerant.
The performance of 1 ~ 4 gained resin combination of 2 embodiment 1 ~ 7 of table, blank example and comparative example
As known from Table 2, the addition of inorganic porous material adsorbent can significantly improve the refrigerant precipitation property of PBT resin composition
Can, while its mechanical property can be slightly reduced, but on its mobility almost without influence；And due to adding chain extension in comparative example
There is apparent decline compared with blank example, have larger impact to the mobility of resin in agent, end-capping reagent, coupling agent etc., melting means.
Claims (10)
1. the refrigerant PBT resin composition of a kind of fiberglass reinforced, which is characterized in that by following group count by weight percentage
Point：
48.0 ~ 95.0 % of polybutylene terephthalate (PBT)；
Glass fibre is more than 0 to not more than 50 %；
1 ~ 10 % of inorganic porous material adsorbent.
2. the refrigerant PBT resin composition of a kind of fiberglass reinforced, which is characterized in that by following group count by weight percentage
Point：
48.0 ~ 95.0 % of polybutylene terephthalate (PBT)；
Glass fibre is more than 0 to not more than 50 %；
1 ~ 10 % of inorganic porous material adsorbent；
Antioxidant 0.1 ~ 1%.
3. the refrigerant PBT resin composition of fiberglass reinforced according to claim 1 or claim 2, which is characterized in that described poly- to benzene
The intrinsic viscosity of dioctyl phthalate butanediol ester is 0.8 ~ 1.3 mL/g.
4. the refrigerant PBT resin composition of fiberglass reinforced according to claim 1 or claim 2, which is characterized in that the glass fibers
Tie up the alkali-free glass fibre for a diameter of 10 ~ 25 μm.
5. the refrigerant PBT resin composition of fiberglass reinforced according to claim 1 or claim 2, which is characterized in that described inorganic more
Porous materials adsorbent is any one or a few in activated carbon, diatomite or porous silica.
6. the refrigerant PBT resin composition of fiberglass reinforced according to claim 1 or claim 2, which is characterized in that described inorganic more
The specific surface area of Porous materials adsorbent is 40 ~ 4000m2/ g, preferably specific surface area are 40 ~ 800m2/g。
7. the refrigerant PBT resin composition of fiberglass reinforced according to claim 2, which is characterized in that the antioxidant is
Pentaerythritol ester kind antioxidant or suffocated amine antioxidant.
8. the preparation method of the refrigerant PBT resin composition of any one of claim 1 to 7 fiberglass reinforced, including following
Step：
S1. polybutylene terephthalate (PBT), glass fibre, inorganic porous material adsorbent are weighed；
S2. double screw extruder will be entered after polybutylene terephthalate (PBT), inorganic porous material adsorbent uniformly mixing,
Glass fibre is added in 6th area of double screw extruder, extrusion obtains preform；
S3. by gained preform cooling in S2, dry, pelletizing up to the refrigerant PBT resin composition of fiberglass reinforced；
If desired, antioxidant adds in double spiral shells together in S2. with polybutylene terephthalate (PBT), inorganic porous material adsorbent
Bar extruder.
9. a kind of synthetic method of the refrigerant PBT resin composition of fiberglass reinforced according to claim 8, feature exist
In in the step S2, the technological parameter of double screw extruder is：One 210 ~ 220 DEG C of area's temperature, two 220 ~ 230 DEG C of area's temperature,
3rd, 230 ~ 240 DEG C of four, five and six area's temperature, seven 240 ~ 250 DEG C of area's temperature, eight 240 ~ 250 DEG C of area's temperature, nine area's temperature 230 ~
240 DEG C, 200 ~ 400 revs/min of engine speed.
10. the refrigerant PBT resin composition of any one of claim 1 to 7 fiberglass reinforced is preparing compressor refrigerant
Application in material.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611072739.9A CN108117726B (en) | 2016-11-29 | 2016-11-29 | Glass fiber reinforced refrigerant-resistant PBT resin composition and preparation method thereof |
| PCT/CN2017/108146 WO2018099224A1 (en) | 2016-11-29 | 2017-10-27 | Glass fiber-reinforced refrigerant-resistant pbt resin composition and preparation method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611072739.9A CN108117726B (en) | 2016-11-29 | 2016-11-29 | Glass fiber reinforced refrigerant-resistant PBT resin composition and preparation method thereof |
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| CN108117726A true CN108117726A (en) | 2018-06-05 |
| CN108117726B CN108117726B (en) | 2020-08-04 |
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| WO (1) | WO2018099224A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110172231A (en) * | 2019-05-08 | 2019-08-27 | 南通开普乐工程塑料有限公司 | A kind of refrigerant PBT resin composition and preparation method thereof |
| CN115232449A (en) * | 2022-08-08 | 2022-10-25 | 湖北合聚新材料有限公司 | Double 85-resistant PBT material and preparation method thereof |
| CN115386199A (en) * | 2022-07-21 | 2022-11-25 | 横店集团得邦工程塑料有限公司 | High-temperature-resistant food-contact fully-biodegradable PBS (Poly Butylene succinate) alloy material and preparation method thereof |
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| CN112159579A (en) * | 2020-09-25 | 2021-01-01 | 广东国立科技股份有限公司 | Functional degradable material with controllable degradation period and preparation method thereof |
| CN113337089B (en) * | 2021-07-22 | 2022-09-23 | 合肥圆融新材料有限公司 | Glass fiber reinforced PBT (polybutylene terephthalate) composite material and preparation method thereof |
| CN114685952B (en) * | 2022-02-28 | 2024-07-23 | 金发科技股份有限公司 | PBT composite material, and preparation and application thereof |
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| CN103232700A (en) * | 2013-04-27 | 2013-08-07 | 上海锦湖日丽塑料有限公司 | Low-odor PC/ABS (polycarbonate/acrylonitrile-butadiene-styrene) reinforced alloy material and preparation method thereof |
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| CN115386199A (en) * | 2022-07-21 | 2022-11-25 | 横店集团得邦工程塑料有限公司 | High-temperature-resistant food-contact fully-biodegradable PBS (Poly Butylene succinate) alloy material and preparation method thereof |
| CN115386199B (en) * | 2022-07-21 | 2024-01-09 | 横店集团得邦工程塑料有限公司 | High-temperature-resistant food-contact full-biodegradable PBS alloy material and preparation method thereof |
| CN115232449A (en) * | 2022-08-08 | 2022-10-25 | 湖北合聚新材料有限公司 | Double 85-resistant PBT material and preparation method thereof |
| CN115232449B (en) * | 2022-08-08 | 2023-08-25 | 湖北合聚高分子材料有限公司 | Double-85-resistant PBT material and preparation method thereof |
Also Published As
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|---|---|
| WO2018099224A1 (en) | 2018-06-07 |
| CN108117726B (en) | 2020-08-04 |
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