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Changshu smoothly da plastic products factory to introduce PVC plastic toughness and rigidity
by：CSSSLD
2021-01-23
Friends often can see a lot of plastic industry colleagues on the question of how to test the stand or fall of PVC plastic pipe the noisy over, some say stepping on cracks is good, some said fell not good, some said that light pressure or impact resistance is one-sided, actually you said is not wrong but plastic toughness and rigidity is a relative concept.
The following works of plastic products factory in changshu to bring everyone know about the PVC plastic toughness and rigidity.
toughness of material is more soft, physical properties table of tensile elongation at break, impact strength; Hardness, tensile strength and tensile modulus of elasticity is relatively small. Rigid material and its hardness, tensile strength; Elongation at break and impact strength could be lower; Tensile modulus of elasticity is larger. Bending strength of reaction materials size rigidity, bending strength is big rigidity, toughness big conversely. Said in ASTM D790 bending performance standard test method, the test method is suitable for rigid material is suitable for semi-rigid materials. Did not say that it is suitable for ductile material, so the toughness elastomer is not to test the bending strength.
rigidity and brittleness is generally together. Brittleness is when the external force reaches a certain limit, the material without aura of sudden failure, no obvious plastic deformation and destruction of nature. The characteristics of the brittle material mechanical properties is greater than the tensile strength, compressive strength and destroyed the ultimate strain of little value. Brick, stone, ceramic, glass, concrete, such as cast iron is a brittle material. Compared with the ductile materials, their effect on resistance to impact load and vibration under is very bad.
as engineering plastics, we hope that it also has good toughness and rigidity. To improve the toughness of the material should also try to improve the rigidity. General to join elastomer can increase the toughness, adding inorganic filler can increase rigidity. The most effective way is to enhanced elastomer toughening and packing together. Shock resistance is poor performance defects of some important plastic industry. Such as PVC, PS, PP, etc. , especially at low temperature due to the low shock resistance and make its application is restricted.
in the midst of thermoplastics by adding & other; Impact modifier & throughout; Can greatly improve the shock resistance of them. Have many kinds and impact modifier, commonly used have the ACR - Acrylate resin, MBS - Methyl methacrylate (mma) - Butadiene - Styrene copolymer, CPE Chlorinated polyethylene, abs, EVA, EPT - The ternary 3-20, etc.
from the perspective of the modification effect of PVC plastics, ACR is a well general features, MBS is transparent products important impact modifier, and the global impact modifier plays a very important position in the market.
although impact modifier can improve the impact strength of the product but has a bad effect on other mechanical strength. Such as MBS in PVC will make him the tensile strength and bending strength decreased. The addition of ACR will make HPVC - High molecular weight PVC tensile strength, hardness and heat resistance decreased d card. The addition of CPE and blend of tensile strength, bending strength, vicat soft point decline. So in the use of impact modifier must take into account the other performance, must be comprehensive consideration and evaluation to determine the more appropriate dosage.
toughness of material is more soft, physical properties table of tensile elongation at break, impact strength; Hardness, tensile strength and tensile modulus of elasticity is relatively small. Rigid material and its hardness, tensile strength; Elongation at break and impact strength could be lower; Tensile modulus of elasticity is larger. Bending strength of reaction materials size rigidity, bending strength is big rigidity, toughness big conversely. Said in ASTM D790 bending performance standard test method, the test method is suitable for rigid material is suitable for semi-rigid materials. Did not say that it is suitable for ductile material, so the toughness elastomer is not to test the bending strength.
rigidity and brittleness is generally together. Brittleness is when the external force reaches a certain limit, the material without aura of sudden failure, no obvious plastic deformation and destruction of nature. The characteristics of the brittle material mechanical properties is greater than the tensile strength, compressive strength and destroyed the ultimate strain of little value. Brick, stone, ceramic, glass, concrete, such as cast iron is a brittle material. Compared with the ductile materials, their effect on resistance to impact load and vibration under is very bad.
as engineering plastics, we hope that it also has good toughness and rigidity. To improve the toughness of the material should also try to improve the rigidity. General to join elastomer can increase the toughness, adding inorganic filler can increase rigidity. The most effective way is to enhanced elastomer toughening and packing together. Shock resistance is poor performance defects of some important plastic industry. Such as PVC, PS, PP, etc. , especially at low temperature due to the low shock resistance and make its application is restricted.
in the midst of thermoplastics by adding & other; Impact modifier & throughout; Can greatly improve the shock resistance of them. Have many kinds and impact modifier, commonly used have the ACR - Acrylate resin, MBS - Methyl methacrylate (mma) - Butadiene - Styrene copolymer, CPE Chlorinated polyethylene, abs, EVA, EPT - The ternary 3-20, etc.
from the perspective of the modification effect of PVC plastics, ACR is a well general features, MBS is transparent products important impact modifier, and the global impact modifier plays a very important position in the market.
although impact modifier can improve the impact strength of the product but has a bad effect on other mechanical strength. Such as MBS in PVC will make him the tensile strength and bending strength decreased. The addition of ACR will make HPVC - High molecular weight PVC tensile strength, hardness and heat resistance decreased d card. The addition of CPE and blend of tensile strength, bending strength, vicat soft point decline. So in the use of impact modifier must take into account the other performance, must be comprehensive consideration and evaluation to determine the more appropriate dosage.
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