{"id":132627,"date":"2024-10-19T07:31:17","date_gmt":"2024-10-19T07:31:17","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-d1238-10\/"},"modified":"2024-10-24T23:43:00","modified_gmt":"2024-10-24T23:43:00","slug":"astm-d1238-10","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-d1238-10\/","title":{"rendered":"ASTM-D1238"},"content":{"rendered":"<\/p>\n

1.1 This test method covers measurement of the rate of extrusion of molten resins through a die of a specified length and diameter under prescribed conditions of temperature, load, and piston position in the barrel as the timed measurement is being made.<\/p>\n

1.2 Procedure A is a manual cutoff operation based on time used for materials having flow rates that fall generally between 0.15 and 50 g\/10 min. Procedure B is an automatically timed flow rate measurement used for materials having flows from 0.50 to 900 g\/10 min. By both procedures, the piston travel is generally the same during the timed measurement; the piston foot is about 46 and 20.6 mm above the die. Comparable flow rates have been obtained by these procedures in interlaboratory round-robin measurements of several materials described in . Provision is made for calculation of melt volume-flow rate as well as melt mass-flow rate.<\/p>\n

Note 1 <\/p>\n

Round-robin testing indicates this test method may be suitable at flow rates up to 1500 g\/10 min if the timing clock resolves the elapsed time to the nearest 0.01 s.<\/p>\n

Note 2 <\/p>\n

This test method and ISO 1133-1991 are technically equivalent.<\/p>\n

This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in 5.7, 10.2.12, and 15.1.2.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nScope
Referenced Documents
Terminology
Significance and Use <\/td>\n<\/tr>\n
2<\/td>\nApparatus
FIG. 1
FIG. 2 <\/td>\n<\/tr>\n
3<\/td>\nFIG. 3 <\/td>\n<\/tr>\n
4<\/td>\nTest Specimen
Conditioning
Procedural Conditions <\/td>\n<\/tr>\n
5<\/td>\nProcedure A\u2014Manual Operation
TABLE 1 <\/td>\n<\/tr>\n
6<\/td>\nProcedure B\u2014Automatically Timed Flow Rate Measurement
TABLE 2 <\/td>\n<\/tr>\n
7<\/td>\nProcedure C\u2014 Automatically Timed Flow Rate Measurement for High Flow Rate Polyolefins Using Half-Height, Half Diameter Die
TABLE 3 <\/td>\n<\/tr>\n
8<\/td>\nCalculation (Procedures B and C)
Procedure D\u2014Multi-Weight Using Automatically Timed Flow Rate Measurement
TABLE 4 <\/td>\n<\/tr>\n
9<\/td>\nTABLE 5
TABLE 6
TABLE 7
TABLE 8 <\/td>\n<\/tr>\n
10<\/td>\nReport
Precision and Bias (Procedures A, B, and C) <\/td>\n<\/tr>\n
11<\/td>\nPrecision and Bias (Procedure D)
TABLE 10
TABLE 11
TABLE 12
TABLE 13
Keywords
X1. EXTRUSION PLASTOMETER BORE ALIGNMENT
X1.1
TABLE 9 <\/td>\n<\/tr>\n
12<\/td>\nX2. TROUBLESHOOTING GUIDE
X2.1 Basic Programs
X2.2 Understanding How Melt Flow Rate is Affected <\/td>\n<\/tr>\n
14<\/td>\nREFERENCES <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

D1238-04c Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASTM<\/b><\/a><\/td>\n2004<\/td>\n14<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":132628,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1179,2637],"product_tag":[],"class_list":{"0":"post-132627","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-83-080-20","7":"product_cat-astm","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/132627","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/132628"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=132627"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=132627"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=132627"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}