The effect of the filler on the tensile strength, and the difference between the modifier and the elongation at break for pvc products

The effect of the filler on the tensile strength, and the difference between the modifier and the elongation at break for pvc products

Filling material refers to (active calcium powder, light calcium, calcium, nano calcium powder, wood powder, bamboo fiber, etc.) for PVC products, in addition to as a reinforcing agent, auxiliary flame retardant, the main increase in PVC product volume, Reduce raw material costs.

PVC hard products (in addition to foam products) fill the level of material, the normal processing of the case of a simple analysis of mechanical properties of the product, you can basically determine the proportion of its filler for reference.

PVC100 (formula is reasonable, plastic in place)

Calcium powder (parts) 5-10  10-20  20-25  30-35  45-50  50-70  70-100 100 or more

Tensile strength            43-45  41-43  36-39  35-36  29-33  28-30   25-27   Less than 25

PVC as a hard and brittle material, with the filler or plasticizer ratio changes in the normal processing conditions, the tensile strength of its products, Vicat strength and filler directly related to the increase in ACR will affect its tensile and dimensional Card strength, the use of high-performance modifier by an increase of 1-3 units tensile strength, than the ACR increased 1-2 units; of course, PVC hard products should take into account the tensile strength and elongation at break (toughness) relationship, Efficient modifier can change the mechanical properties of PVC products, fully equipped with ACR function, no need to add ACR, try to balance the good cost and quality relationship, play its due role.

PVC Stretch Elongation at Break

Using calcium and zinc stabilizer CZ-208, PVC modifier 702E8, CPE, comparative data (to PVC production test formula for example)

⑴ ⑵ ⑶ ⑷ ⑸ ⑹ ⑺

PVC                   100  100  100  100  100  100  100

Active calcium     20    25    20     25     33   40    45

208                        4.0  4.0  4.0    4.0     4.6   4.8   4.8

CPE                      9.2   9.2  9.0   9.0

ACR                      1.0  1.0   1.5   1.5

702E8                   4.0   4.0  4.0

Titanium dioxide amount

Pigment amount

Stretching              35.33 35.92 37.07 36.79 35.00 31.43 30.40

Elongation rate 109.52 115.77 112.38 111.91 115.24 111.43 109.05



⑻ ⑼ ⑽ ⑾ ⑿ ⒀ ⒁ ⒂

PVC 100 100 100 100 100 100 100 100

Active calcium 50 55 70 40 45 50 55 70

208 4.8 4.8 5.0 4.8 4.8 4.8 4.8 5.0

CPE 10 10 12

ACR 1.5 1.5 1.5

702E8 4.4 4.8 5.0 5.4

Titanium dioxide amount

Pigment amount

Stretch 29.93 30.73 25.73 32.27 32.55 29.98 28.82 26.92

Elongation 115.72 118.57 112.86 120.48 121.91 125.72 123.81 109.05

From data analysis:

1, PVC modifier 702E8 can replace ACR + CPE components, regardless of appearance, stretch, elongation on the contrast, fully compliance; and mechanical indicators more ideal.

2, CPE incremental use, will reduce the stretch, elongation will be limited, pvc modifier 702E8, 702E7 use, generally between 3.5-5 copies, more than 5 copies, the effect and the use of the same CPE, there is an increase Not effective.

3, with pvc modifier 702E8, 702E7 can be synchronized to improve the tensile, Vicat strength, elongation at break, basically to achieve the traditional ACR + CPE ratio; of course, plasticization control is the key.





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